/* ============================================
   AI Roleplay - Unified Glassmorphism UI
   Style: Glassmorphism + Warm Amber
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ============================================
   CSS Variables - Dark Mode (Default)
   ============================================ */
:root {
    --bg-base: #0d0d14;
    --bg-surface: rgba(255, 255, 255, 0.02);
    --bg-elevated: rgba(255, 255, 255, 0.04);
    --bg-hover: rgba(255, 255, 255, 0.06);
    --bg-active: rgba(255, 255, 255, 0.08);
    
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    
    --accent: #f59e0b;
    --accent-hover: #fbbf24;
    --accent-active: #d97706;
    --accent-subtle: rgba(245, 158, 11, 0.1);
    --accent-glow: rgba(245, 158, 11, 0.25);
    --accent-gradient: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
    
    --success: #10b981;
    --success-subtle: rgba(16, 185, 129, 0.1);
    --danger: #ef4444;
    --danger-subtle: rgba(239, 68, 68, 0.1);
    --warning: #f59e0b;
    --warning-subtle: rgba(245, 158, 11, 0.1);
    --info: #3b82f6;
    --info-subtle: rgba(59, 130, 246, 0.1);
    
    --text-primary: #f5f5f5;
    --text-secondary: #a3a3a3;
    --text-tertiary: #737373;
    --text-muted: #525252;
    
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-accent: 0 0 24px rgba(245, 158, 11, 0.2);
    --shadow-inset: inset 0 1px 2px rgba(0, 0, 0, 0.3);
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;
    
    --transition-fast: 120ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-theme: 250ms ease;
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    --header-height: 56px;
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 64px;
    --input-height: 44px;
    --mobile-nav-height: 64px;
    
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 1000;
    --z-toast: 2000;
}

/* ============================================
   CSS Variables - Light Mode
   ============================================ */
[data-theme="light"] {
    --bg-base: #fef7ed;
    --bg-surface: rgba(255, 255, 255, 0.7);
    --bg-elevated: rgba(255, 255, 255, 0.9);
    --bg-hover: rgba(0, 0, 0, 0.04);
    --bg-active: rgba(0, 0, 0, 0.06);
    
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(0, 0, 0, 0.08);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    
    --accent: #d97706;
    --accent-hover: #b45309;
    --accent-active: #92400e;
    --accent-subtle: rgba(217, 119, 6, 0.1);
    --accent-glow: rgba(217, 119, 6, 0.2);
    --accent-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    
    --success: #059669;
    --success-subtle: rgba(5, 150, 105, 0.1);
    --danger: #dc2626;
    --danger-subtle: rgba(220, 38, 38, 0.1);
    --warning: #d97706;
    --warning-subtle: rgba(217, 119, 6, 0.1);
    --info: #2563eb;
    --info-subtle: rgba(37, 99, 235, 0.1);
    
    --text-primary: #1c1917;
    --text-secondary: #57534e;
    --text-tertiary: #a8a29e;
    --text-muted: #d6d3d1;
    
    --border: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.15);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
    --shadow-accent: 0 0 24px rgba(245, 158, 11, 0.15);
    --shadow-inset: inset 0 1px 2px rgba(0, 0, 0, 0.04);
}

/* ============================================
   Base Styles
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-base);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-theme), color var(--transition-theme);
}

/* Animated background for glassmorphism */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 20%, rgba(245, 158, 11, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(251, 191, 36, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 60% 30%, rgba(217, 119, 6, 0.04) 0%, transparent 30%);
    animation: bgFloat 30s ease-in-out infinite;
    pointer-events: none;
    z-index: -1;
}

[data-theme="light"] body::before {
    background: 
        radial-gradient(circle at 20% 20%, rgba(245, 158, 11, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(251, 191, 36, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 60% 30%, rgba(217, 119, 6, 0.06) 0%, transparent 30%);
}

@keyframes bgFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(2%, 2%) rotate(1deg); }
    66% { transform: translate(-1%, 1%) rotate(-1deg); }
}

#app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.01em;
}

h1 { font-size: 1.5rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1rem; }

.text-muted { color: var(--text-tertiary); }
.text-small { font-size: 0.75rem; }

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    transition: all var(--transition-fast);
    white-space: nowrap;
    user-select: none;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.btn:active {
    transform: scale(0.97);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #1c1917;
    box-shadow: var(--shadow-accent);
}

.btn-primary:hover:not(:disabled) {
    filter: brightness(1.1);
    box-shadow: 0 0 32px rgba(245, 158, 11, 0.35);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 0.4rem 0.75rem;
}

.btn-ghost:hover:not(:disabled) {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-ghost svg {
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.btn-ghost:hover svg {
    opacity: 1;
}

.btn-danger {
    background: var(--danger-subtle);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-danger:hover:not(:disabled) {
    background: var(--danger);
    color: white;
}

.btn-icon {
    padding: 0.5rem;
    min-width: 36px;
    min-height: 36px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

.btn-icon:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.btn-icon-danger:hover {
    background: var(--danger-subtle);
    color: var(--danger);
    border-color: var(--danger);
}

.btn-full { width: 100%; }

.btn-small {
    padding: 0.35rem 0.65rem;
    font-size: 0.75rem;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

/* ============================================
   Glass Panel Base
   ============================================ */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

/* ============================================
   Layout - Desktop
   ============================================ */
.app-container {
    display: flex;
    height: 100%;
    overflow: hidden;
}

.app-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    position: relative;
}

/* Header */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-md);
    height: var(--header-height);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    flex-shrink: 0;
    position: relative;
    z-index: var(--z-sticky);
}

.app-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.app-logo-icon {
    width: 36px;
    height: 36px;
    background: var(--accent-gradient);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-accent);
}

.app-logo-icon svg {
    width: 20px;
    height: 20px;
    color: #1c1917;
}

.app-logo-text {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
}

.app-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.app-header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Sidebar */
.app-sidebar {
    width: var(--sidebar-width);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: width var(--transition-slow);
    position: relative;
}

.sidebar-section {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--glass-border);
}

.sidebar-mobile-header {
    display: none;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    padding-top: calc(var(--spacing-md) + env(safe-area-inset-top, 0px));
    border-bottom: 1px solid var(--glass-border);
    background: var(--glass-bg);
    pointer-events: auto;
}

.sidebar-mobile-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.sidebar-mobile-header .btn-icon {
    pointer-events: auto;
}

@media (max-width: 768px) {
    .sidebar-section {
        padding: var(--spacing-sm) var(--spacing-md);
        border-bottom: 1px solid var(--glass-border);
        pointer-events: auto;
    }
}

.sidebar-section:last-child {
    border-bottom: none;
}

.sidebar-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.sidebar-select {
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-primary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sidebar-select:hover {
    border-color: var(--border-hover);
}

.sidebar-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-subtle);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

/* Character List in Sidebar */
.char-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.character-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.85rem;
    color: var(--text-secondary);
    position: relative;
}

.character-item:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

.character-item.active-playing-as {
    background: var(--accent-subtle);
    border-color: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.character-item.active-playing-as .character-avatar {
    background: var(--accent-gradient);
    box-shadow: 0 0 8px var(--accent-glow);
    color: #1c1917;
}

.character-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.character-item .select-indicator {
    display: none;
    position: absolute;
    right: var(--spacing-sm);
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 600;
}

.character-item.active-playing-as .select-indicator {
    display: block;
}

.character-item .select-btn {
    display: none;
    position: absolute;
    right: var(--spacing-sm);
    padding: 2px var(--spacing-sm);
    font-size: 0.6875rem;
    background: var(--bg-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

.character-item:hover:not(.active-playing-as) .select-btn {
    display: block;
}

.character-item:hover:not(.active-playing-as) .select-btn:hover {
    background: var(--accent-subtle);
    border-color: var(--accent);
    color: var(--accent);
}

.char-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.char-item:hover {
    background: var(--bg-hover);
    border-color: var(--glass-border);
}

.char-item.active {
    background: var(--accent-subtle);
    border-color: var(--accent);
    color: var(--accent);
}

.char-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: #1c1917;
    flex-shrink: 0;
}

.char-avatar.human {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    color: white;
}

.select-indicator {
    font-size: 0.7rem;
    color: var(--accent);
    margin-left: auto;
}

.select-btn {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    margin-left: auto;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.char-item:hover .select-btn {
    opacity: 1;
}

/* Playing As Section */
#playing-as .character-item {
    cursor: pointer;
    position: relative;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
}

#playing-as .character-item:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

#playing-as .character-item.active-playing-as {
    background: var(--accent-subtle);
    border-color: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

#playing-as .character-item.active-playing-as .character-avatar {
    background: var(--accent-gradient);
    box-shadow: 0 0 8px var(--accent-glow);
    color: #1c1917;
}

/* On Scene Characters Section */
#scene-characters .character-item {
    cursor: pointer;
    position: relative;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
}

#scene-characters .character-item:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

#scene-characters .character-item.active-playing-as {
    background: var(--accent-subtle);
    border-color: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

#scene-characters .character-item.active-playing-as .character-avatar {
    background: var(--accent-gradient);
    box-shadow: 0 0 8px var(--accent-glow);
    color: #1c1917;
}

#scene-characters .character-item .select-indicator {
    display: none;
    position: absolute;
    right: var(--spacing-sm);
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 600;
}

#scene-characters .character-item.active-playing-as .select-indicator {
    display: block;
}

#scene-characters .character-item .select-btn {
    display: none;
    position: absolute;
    right: var(--spacing-sm);
    padding: 2px var(--spacing-sm);
    font-size: 0.6875rem;
    background: var(--bg-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

#scene-characters .character-item:hover:not(.active-playing-as) .select-btn {
    display: block;
}

#scene-characters .character-item:hover:not(.active-playing-as) .select-btn:hover {
    background: var(--accent-subtle);
    border-color: var(--accent);
    color: var(--accent);
}

/* ============================================
   Session Characters
   ============================================ */
#session-characters-list .char-item {
    cursor: pointer;
    position: relative;
    border: 2px solid transparent;
    background: linear-gradient(135deg, var(--glass-bg), rgba(245, 158, 11, 0.03));
}

#session-characters-list .char-item:hover {
    background: var(--bg-hover);
    border-color: rgba(245, 158, 11, 0.3);
}

#session-characters-list .char-item.on-scene {
    background: var(--warning-subtle);
    border-color: var(--warning);
}

#session-characters-list .char-item.on-scene .avatar {
    box-shadow: 0 0 8px rgba(245, 158, 11, 0.5);
}

#session-characters-list .char-item .avatar {
    background: var(--accent-gradient);
}

#session-characters-list .char-item .scene-indicator {
    display: none;
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    color: var(--warning);
    font-size: 0.7rem;
    font-weight: 600;
}

#session-characters-list .char-item.on-scene .scene-indicator {
    display: block;
}

#session-characters-list .char-item .toggle-scene-btn {
    display: none;
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    padding: 2px var(--spacing-sm);
    font-size: 0.65rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
}

#session-characters-list .char-item:hover:not(.on-scene) .toggle-scene-btn {
    display: block;
}

#session-characters-list .char-item:hover:not(.on-scene) .toggle-scene-btn:hover {
    background: var(--warning-subtle);
    border-color: var(--warning);
    color: var(--warning);
}

.session-char-badge {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    font-size: 0.6rem;
    padding: 2px var(--spacing-sm);
    background: var(--warning-subtle);
    color: var(--warning);
    border-radius: var(--radius-xs);
    font-weight: 500;
    margin-left: var(--spacing-xs);
}

/* ============================================
   Chat Area
   ============================================ */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    position: relative;
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    touch-action: pan-y;
}

/* Welcome Message */
.welcome-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    color: var(--text-secondary);
}

.welcome-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-subtle);
    border-radius: 50%;
    margin-bottom: var(--spacing-md);
    color: var(--accent);
    border: 1px solid var(--glass-border);
}

.welcome-message h2 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.welcome-message p {
    font-size: 0.9rem;
    margin-bottom: var(--spacing-lg);
}

.welcome-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    width: 100%;
    max-width: 300px;
}

.step {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    backdrop-filter: blur(10px);
}

.step-number {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    color: #1c1917;
    border-radius: 50%;
    font-size: 0.8rem;
    font-weight: 600;
    flex-shrink: 0;
}

/* Messages */
.message {
    display: flex;
    gap: var(--spacing-sm);
    animation: msgFadeIn 0.25s ease;
}

@keyframes msgFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 600;
    color: #1c1917;
    flex-shrink: 0;
}

.message-avatar.human {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    color: white;
}

.message-content {
    flex: 1;
    min-width: 0;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    backdrop-filter: blur(10px);
}

.message-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: 4px;
    flex-wrap: wrap;
}

.message-author {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.message-actions-inline {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.message:hover .message-actions-inline {
    opacity: 1;
}

.btn-icon-sm {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
    padding: 0;
}

.btn-icon-sm:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-icon-sm.btn-icon-danger:hover {
    background: var(--danger-subtle);
    color: var(--danger);
}

.btn-icon-sm.btn-icon-tool {
    color: var(--warning);
    position: relative;
}

.btn-icon-sm.btn-icon-tool:hover {
    background: var(--warning-subtle);
    color: var(--warning);
}

.btn-icon-sm svg {
    width: 12px;
    height: 12px;
}

.message-time {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    margin-left: auto;
}

.message-text {
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 0.9rem;
    word-wrap: break-word;
}

.message-text p {
    margin-bottom: var(--spacing-sm);
}

.message-text p:last-child {
    margin-bottom: 0;
}

.message-text strong {
    font-weight: 400;
    color: var(--text-tertiary);
    font-style: italic;
}

.message-text em {
    font-style: italic;
    color: var(--text-secondary);
}

.message-text code.md-inline-code {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px var(--spacing-sm);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--accent);
}

.message-text pre.md-code-block {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    margin: var(--spacing-sm) 0;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.5;
}

.message-text pre.md-code-block code {
    background: none;
    border: none;
    padding: 0;
    color: var(--text-primary);
}

.message-text blockquote.md-blockquote {
    border-left: 3px solid var(--accent);
    padding: 2px var(--spacing-sm);
    margin: var(--spacing-sm) 0;
    color: var(--text-secondary);
    font-style: italic;
}

.message-text ul.md-list {
    list-style: none;
    padding-left: 0;
    margin: var(--spacing-xs) 0;
}

.message-text li.md-list-item {
    position: relative;
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.message-text li.md-list-item::before {
    content: '•';
    position: absolute;
    left: var(--spacing-xs);
    color: var(--accent);
    font-weight: bold;
}

.message-actions {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    opacity: 0;
    transition: opacity var(--transition-fast);
    margin-left: auto;
    margin-right: 4px;
    flex-shrink: 0;
}

.message:hover .message-actions {
    opacity: 1;
}

.message-actions .btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
    padding: 0;
}

.message:hover .message-actions {
    opacity: 1;
}

.message-actions .btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
    padding: 0;
}

/* System Message */
.message.system-message {
    flex-direction: row;
    justify-content: flex-start;
}

.message.system-message .message-content {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(251, 191, 36, 0.05));
    border-left: 3px solid var(--accent);
    max-width: 100%;
}

.system-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--accent);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Message Input Area */
.chat-input-area {
    padding: var(--spacing-sm) var(--spacing-md);
    padding-bottom: calc(var(--spacing-sm) + env(safe-area-inset-bottom, 0px));
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
    flex-shrink: 0;
}

.input-wrapper {
    display: flex;
    gap: var(--spacing-sm);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    transition: all var(--transition-fast);
}

.input-wrapper:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-subtle), var(--shadow-accent);
}

.input-wrapper textarea {
    flex: 1;
    padding: var(--spacing-sm);
    background: transparent;
    border: none;
    color: var(--text-primary);
    resize: none;
    font-family: inherit;
    font-size: 15px;
    line-height: 1.5;
    max-height: 120px;
    min-height: 24px;
}

.input-wrapper textarea:focus {
    outline: none;
}

.input-wrapper textarea::placeholder {
    color: var(--text-tertiary);
}

.input-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-system-toggle {
    padding: 0.5rem;
    min-width: 40px;
    border-radius: var(--radius-sm);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-tertiary);
    transition: all var(--transition-fast);
}

.btn-system-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent);
}

.btn-system-toggle.active {
    background: var(--accent-subtle);
    border-color: var(--accent);
    color: var(--accent);
}

.btn-send {
    width: var(--input-height);
    height: var(--input-height);
    padding: 0;
    border-radius: var(--radius-md);
    background: var(--accent-gradient);
    color: #1c1917;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-accent);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-send:hover {
    transform: scale(1.05);
    box-shadow: 0 0 32px rgba(245, 158, 11, 0.4);
}

.btn-send:disabled {
    opacity: 0.5;
    transform: none;
}

.btn-send.btn-stop {
    background: var(--danger);
    color: white;
    box-shadow: 0 0 16px rgba(239, 68, 68, 0.3);
}

.btn-send.btn-skip {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-tertiary);
    box-shadow: none;
}

/* ============================================
   Typing Indicator
   ============================================ */
.typing-indicator-message {
    animation: msgFadeIn 0.25s ease;
}

.typing-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.5rem 0;
}

.typing-dots {
    display: flex;
    gap: 4px;
    align-items: center;
}

.typing-dots span {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: typingBounce 1.4s ease-in-out infinite;
}

.typing-dots span:nth-child(2) { animation-delay: 0.15s; }
.typing-dots span:nth-child(3) { animation-delay: 0.3s; }

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-5px); opacity: 1; }
}

.typing-stage-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-style: italic;
}

.typing-multi-avatar-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.typing-avatar-item {
    flex-shrink: 0;
}

.typing-avatar-item .message-avatar {
    width: 32px;
    height: 32px;
    font-size: 0.75rem;
}

.typing-avatar-divider {
    width: 12px;
    height: 2px;
    background: var(--glass-border);
    border-radius: 1px;
    flex-shrink: 0;
}

/* ============================================
   Modals
   ============================================ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    animation: fadeIn 0.2s ease;
    z-index: 1;
    cursor: pointer;
}

.modal-content {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 580px;
    max-height: 85vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
    animation: modalIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 2;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.96) translateY(8px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-sm { max-width: 400px; }
.modal-md { max-width: 520px; }
.modal-lg { max-width: 720px; }

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--glass-border);
    flex-shrink: 0;
}

.modal-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--glass-border);
}

/* ============================================
   Modal Tabs
   ============================================ */
.modal-tabs {
    display: flex;
    padding: 0 var(--spacing-lg);
    border-bottom: 1px solid var(--glass-border);
    background: transparent;
}

.modal-tab {
    padding: 0.75rem var(--spacing-md);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-tertiary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: -1px;
}

.modal-tab:hover {
    color: var(--text-secondary);
}

.modal-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.modal-tab-content {
    display: none;
    animation: fadeIn 0.2s ease;
}

.modal-tab-content.active {
    display: block;
}

/* ============================================
   Split Panel Layout
   ============================================ */
.modal-split {
    display: flex;
    flex: 1;
    min-height: 0;
}

.modal-split-left {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
    border-right: 1px solid var(--glass-border);
}

.modal-split-right {
    width: 200px;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.01);
    overflow-y: auto;
}

.modal-split-right h4 {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Scene Card (for session modal)
   ============================================ */
.scene-select-card {
    padding: var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-sm);
}

.scene-select-card:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

.scene-select-card.selected {
    background: var(--accent-subtle);
    border-color: var(--accent);
}

.scene-select-card-name {
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 4px;
}

.scene-select-card-desc {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   Character Selection List
   ============================================ */
.char-select-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.char-select-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 8px 10px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.85rem;
}

.char-select-item:hover {
    background: var(--bg-hover);
}

.char-select-item.selected {
    background: var(--accent-subtle);
    border-color: rgba(245, 158, 11, 0.3);
}

.char-select-item .avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: #1c1917;
    flex-shrink: 0;
}

.char-select-item .name {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.char-select-item .check {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.char-select-item.selected .check {
    background: var(--accent);
    border-color: var(--accent);
}

/* ============================================
   Modal Footer
   ============================================ */
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--glass-border);
    flex-shrink: 0;
}

/* ============================================
   Custom Select Dropdown
   ============================================ */
.custom-select {
    position: relative;
    width: 100%;
    font-family: inherit;
}

.custom-select-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 10px 12px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.custom-select-trigger:hover {
    border-color: var(--border-hover);
    background: var(--bg-hover);
}

.custom-select.open .custom-select-trigger {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-subtle);
}

.custom-select-trigger-text {
    flex: 1;
    text-align: left;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.custom-select-trigger-text.placeholder {
    color: var(--text-tertiary);
}

.custom-select-arrow {
    width: 16px;
    height: 16px;
    color: var(--text-tertiary);
    transition: transform var(--transition-fast);
    flex-shrink: 0;
    margin-left: var(--spacing-sm);
}

.custom-select.open .custom-select-arrow {
    transform: rotate(180deg);
}

.custom-select-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
    max-height: 240px;
    overflow-y: auto;
}

.custom-select.open .custom-select-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Dark mode: translucent background for dropdowns */
:root .custom-select-dropdown {
    background: rgba(30, 30, 42, 0.92);
}

[data-theme="light"] .custom-select-dropdown {
    background: rgba(255, 255, 255, 0.92);
}

.custom-select-option {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.custom-select-option:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.custom-select-option.selected {
    background: var(--accent-subtle);
    color: var(--accent);
}

.custom-select-option.selected::after {
    content: '';
    margin-left: auto;
    width: 16px;
    height: 16px;
    background-image: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f59e0b' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
}

.custom-select-option.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.custom-select-empty {
    padding: var(--spacing-md);
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

/* Sidebar selects */
.sidebar-select-wrapper {
    position: relative;
}

.sidebar-select-wrapper .custom-select-trigger {
    padding: 10px 12px;
    font-size: 0.85rem;
}

/* Form group selects */
.form-group .custom-select {
    margin-bottom: var(--spacing-md);
}

.form-group .custom-select-trigger {
    padding: 0.625rem 0.875rem;
}

/* ============================================
   Forms
   ============================================ */
.form-section {
    margin-bottom: var(--spacing-lg);
}

.form-section h3 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.625rem 0.875rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-family: inherit;
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-subtle);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-tertiary);
}

.form-group textarea {
    resize: vertical;
    min-height: 60px;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.25rem;
}

.form-group select option,
.sidebar-select option {
    background: rgba(30, 30, 42, 0.92);
    color: var(--text-primary);
    padding: 0.5rem;
}

[data-theme="light"] .form-group select option,
[data-theme="light"] .sidebar-select option {
    background: rgba(255, 255, 255, 0.92);
}

.form-row {
    display: flex;
    gap: var(--spacing-md);
}

.form-row > * {
    flex: 1;
}

/* Checkbox */
.checkbox-label {
    display: flex !important;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-weight: 400 !important;
    font-size: 0.85rem;
    color: var(--text-secondary);
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: 0;
    height: 0;
    position: absolute;
    opacity: 0;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    min-width: 20px;
    border: 2px solid var(--glass-border);
    border-radius: 5px;
    background: var(--glass-bg);
    flex-shrink: 0;
    position: relative;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.checkbox-custom::after {
    content: '';
    position: absolute;
    width: 5px;
    height: 9px;
    border: solid #1c1917;
    border-width: 0 2.5px 2.5px 0;
    transform: rotate(45deg) scale(0);
    transition: transform 0.1s ease;
    margin-top: -1px;
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
    background: var(--accent-gradient);
    border-color: var(--accent);
    box-shadow: var(--shadow-accent);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
    transform: rotate(45deg) scale(1);
}

.checkbox-label:hover .checkbox-custom {
    border-color: var(--accent);
}

.checkbox-label input[type="checkbox"]:focus + .checkbox-custom {
    box-shadow: 0 0 0 3px var(--accent-subtle);
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    max-height: 200px;
    overflow-y: auto;
    padding: var(--spacing-sm);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.375rem var(--spacing-sm);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.checkbox-group label:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.form-group.remember-group {
    margin-bottom: var(--spacing-lg);
}

.form-group.remember-group .checkbox-label {
    margin: 0;
}

/* ============================================
   Lists
   ============================================ */
.list-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.list-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--spacing-md);
    background: var(--glass-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-fast);
}

.list-item:hover {
    border-color: var(--border-hover);
    background: var(--bg-hover);
}

.list-item-info {
    flex: 1;
    min-width: 0;
}

.list-item-title {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 2px;
}

.list-item-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.list-item-actions {
    display: flex;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-md);
    flex-shrink: 0;
}

/* ============================================
   Toast Notifications
   ============================================ */
#toast-container {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem var(--spacing-md);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 0.85rem;
    color: var(--text-primary);
    animation: toastIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: auto;
    max-width: 340px;
}

.toast.toast-success {
    border-left: 3px solid var(--success);
}

.toast.toast-error {
    border-left: 3px solid var(--danger);
}

.toast.toast-out {
    animation: toastOut 0.2s ease forwards;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateY(8px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateY(0) scale(1); }
    to { opacity: 0; transform: translateY(-4px) scale(0.96); }
}

/* ============================================
   Scrollbar
   ============================================ */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

[data-theme="light"]::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
}

[data-theme="light"]::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.2);
}

/* ============================================
   Selection
   ============================================ */
::selection {
    background: var(--accent-subtle);
    color: var(--text-primary);
}

/* ============================================
   Responsive - Mobile
   ============================================ */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    
    .app-main {
        flex: 1;
        min-height: 0;
        display: flex;
        flex-direction: column;
    }
    
    .app-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        z-index: var(--z-modal);
        transform: translateX(-100%);
        transition: transform var(--transition-slow);
        overflow-y: auto;
        pointer-events: none;
    }
    
    .app-sidebar.open {
        transform: translateX(0);
        pointer-events: auto;
    }
    
    .app-header {
        padding: 0 var(--spacing-sm);
        height: calc(var(--header-height) + env(safe-area-inset-top, 0px));
        padding-top: env(safe-area-inset-top, 0px);
    }
    
    .app-logo-text {
        display: none;
    }
    
    #btn-menu {
        display: flex !important;
    }
    
    .app-header-right .btn span {
        display: none;
    }
    
    .app-header-right .btn {
        padding: 0.5rem;
    }
    
    .chat-messages {
        padding: var(--spacing-sm);
        padding-bottom: calc(var(--mobile-nav-height) + var(--spacing-lg));
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
        flex: 1;
        min-height: 0;
        overflow-y: auto;
    }
    
    .chat-container {
        flex: 1;
        min-height: 0;
        display: flex;
        flex-direction: column;
        overflow: hidden;
    }
    
    .message {
        gap: var(--spacing-xs);
    }
    
    .message-avatar {
        width: 32px;
        height: 32px;
        font-size: 0.75rem;
    }
    
    .message-content {
        padding: var(--spacing-sm);
    }
    
    .message-actions {
        opacity: 1;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }
    
    .message-actions .btn-icon {
        min-width: 36px;
        min-height: 36px;
    }
    
    .modal {
        padding: 0;
        align-items: flex-end;
    }
    
    .modal-content {
        max-width: 100%;
        max-height: 92vh;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        animation: sheetSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    @keyframes sheetSlideIn {
        from { transform: translateY(100%); }
        to { transform: translateY(0); }
    }
    
    .modal-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .modal-header h2 {
        font-size: 1rem;
    }
    
    .modal-body {
        padding: var(--spacing-md);
        -webkit-overflow-scrolling: touch;
    }
    
    .modal-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .modal-actions .btn {
        width: 100%;
        min-height: 48px;
    }
    
    .modal-split {
        flex-direction: column;
    }
    
    .modal-split-left {
        border-right: none;
        border-bottom: 1px solid var(--glass-border);
        padding: var(--spacing-md);
    }
    
    .modal-split-right {
        width: 100%;
        max-height: 200px;
        padding: var(--spacing-md);
    }
    
    .modal-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .modal-tab {
        flex-shrink: 0;
    }
    
    #toast-container {
        left: var(--spacing-md);
        right: var(--spacing-md);
        bottom: calc(var(--mobile-nav-height) + 70px + var(--spacing-md) + env(safe-area-inset-bottom, 0px));
    }
    
    .toast {
        max-width: 100%;
    }
    
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .form-row > * {
        width: 100%;
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select,
    .sidebar-select {
        font-size: 16px;
        min-height: 48px;
        padding: 0.75rem;
    }
    
    .form-group textarea {
        min-height: 80px;
    }
    
    .btn {
        min-height: 44px;
        font-size: 0.9rem;
    }
    
    .btn-small, .btn-sm {
        min-height: 40px;
    }
    
    .welcome-steps {
        flex-direction: column;
    }
    
    .step {
        padding: var(--spacing-sm);
    }
    
    .welcome-message {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .welcome-message h2 {
        font-size: 1.1rem;
    }
    
    .sidebar-section {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .char-item {
        padding: var(--spacing-sm);
        min-height: 48px;
    }
    
    .char-avatar {
        width: 36px;
        height: 36px;
    }
    
    .list-item {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .list-item-actions {
        width: 100%;
        justify-content: flex-end;
        margin-left: 0;
    }
    
    .list-item-actions .btn {
        min-height: 40px;
    }
    
    .checkbox-group {
        max-height: 180px;
    }
    
    .checkbox-group label {
        min-height: 48px;
        padding: 0.75rem var(--spacing-sm);
    }
    
    .char-info-tabs {
        overflow-x: auto;
    }
    
    .char-info-tab {
        flex-shrink: 0;
        min-height: 48px;
    }
    
    .char-info-add-form {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .char-info-input,
    .char-info-select {
        width: 100%;
        min-height: 48px;
    }
    
    .time-skip-controls {
        gap: var(--spacing-sm);
    }
    
    .time-skip-row {
        gap: var(--spacing-xs);
    }
    
    .time-skip-row .btn {
        min-height: 44px;
        font-size: 0.8rem;
    }
    
    .input-wrapper {
        padding: var(--spacing-xs);
    }
    
    .input-wrapper textarea {
        font-size: 16px;
        min-height: 28px;
    }
    
    .btn-send {
        width: 44px;
        height: 44px;
    }
    
    .btn-system-toggle {
        width: 44px;
        height: 44px;
    }
    
    .char-select-list {
        max-height: 150px;
        overflow-y: auto;
    }
    
    .char-select-item {
        min-height: 48px;
    }
}

/* ============================================
   Mobile Bottom Navigation
   ============================================ */
.mobile-nav {
    display: none;
    justify-content: space-around;
    align-items: center;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
    padding: var(--spacing-xs) 0;
    padding-bottom: env(safe-area-inset-bottom, 0px);
    flex-shrink: 0;
    z-index: var(--z-sticky);
    position: relative;
    pointer-events: auto;
    touch-action: manipulation;
}

@media (max-width: 768px) {
    .sidebar-mobile-header {
        display: flex;
        position: sticky;
        top: 0;
        z-index: 1;
        background: var(--glass-bg);
    }
    
    .chat-input-area {
        padding-bottom: calc(var(--spacing-sm) + env(safe-area-inset-bottom, 0px));
    }
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    font-size: 0.65rem;
    font-family: inherit;
    min-width: 64px;
    min-height: 48px;
    cursor: pointer;
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
    pointer-events: auto;
    touch-action: manipulation;
}

.nav-item:active {
    opacity: 0.7;
    transform: scale(0.96);
}

.nav-item svg {
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.nav-item.active {
    color: var(--accent);
}

.nav-item.active svg {
    opacity: 1;
}

.nav-item span {
    font-weight: 500;
}

/* ============================================
   Reasoning Block
   ============================================ */
.message-reasoning {
    margin-top: var(--spacing-sm);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.reasoning-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-tertiary);
    min-height: 36px;
    transition: all var(--transition-fast);
}

.reasoning-header:hover {
    background: var(--bg-hover);
}

.reasoning-header::before {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 4px solid currentColor;
    border-top: 3px solid transparent;
    border-bottom: 3px solid transparent;
    transition: transform var(--transition-fast);
}

.reasoning-header.expanded::before {
    transform: rotate(90deg);
}

.reasoning-content {
    display: none;
    padding: var(--spacing-sm);
    border-top: 1px solid var(--glass-border);
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
    font-style: italic;
}

.reasoning-content.visible {
    display: block;
}

/* ============================================
   Version Switcher
   ============================================ */
.version-switcher {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--glass-border);
}

.version-label {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    margin-right: var(--spacing-xs);
}

.version-btn {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xs);
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.version-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.version-count {
    font-size: 0.7rem;
    color: var(--text-secondary);
    min-width: 40px;
    text-align: center;
}

/* ============================================
   Tool Call Badge
   ============================================ */
.btn-icon-tool {
    position: relative;
}

.tool-call-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 14px;
    height: 14px;
    padding: 0 4px;
    background: var(--warning);
    color: #1c1917;
    font-size: 0.6rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-call-entry {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
}

.tool-call-name {
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--accent);
    background: var(--accent-subtle);
    border-bottom: 1px solid var(--glass-border);
}

.tool-call-index {
    color: var(--text-tertiary);
    font-weight: 400;
    font-size: 0.75rem;
}

.tool-call-args {
    margin: 0;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
    background: var(--bg-surface);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

/* ============================================
   Character Info Modal
   ============================================ */
.char-info-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: var(--spacing-md);
}

.char-info-tab {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.char-info-tab:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.char-info-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.char-info-panel {
    display: none;
}

.char-info-panel.active {
    display: block;
}

.char-info-list {
    max-height: 280px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.char-info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--glass-bg);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    border: 1px solid var(--glass-border);
}

.char-info-item-content {
    flex: 1;
    min-width: 0;
}

.char-info-item-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.char-info-item-text {
    color: var(--text-secondary);
    word-break: break-word;
}

.char-info-badge {
    font-size: 0.65rem;
    padding: 2px var(--spacing-sm);
    border-radius: var(--radius-xs);
    font-weight: 500;
}

.char-info-badge-type {
    background: var(--accent-subtle);
    color: var(--accent);
}

.char-info-badge-permanent {
    background: var(--success-subtle);
    color: var(--success);
}

.char-info-badge-session {
    background: var(--warning-subtle);
    color: var(--warning);
}

.char-info-add-form {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--glass-border);
}

.char-info-input,
.char-info-select {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-family: inherit;
    transition: all var(--transition-fast);
}

.char-info-input:focus,
.char-info-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-subtle);
}

.char-info-input::placeholder {
    color: var(--text-muted);
}

.char-info-empty {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.btn-delete {
    background: none;
    border: none;
    padding: var(--spacing-xs);
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: var(--radius-xs);
    transition: all var(--transition-fast);
}

.btn-delete:hover {
    color: var(--danger);
    background: var(--danger-subtle);
}

.emotion-radar-container {
    display: flex;
    justify-content: center;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.emotion-radar-container canvas {
    max-width: 300px;
    max-height: 300px;
}

.emotion-legend {
    text-align: center;
    padding: var(--spacing-sm);
}

.text-small {
    font-size: 0.75rem;
}

/* ============================================
   Emotion Values
   ============================================ */
.emotion-values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
}

@media (max-width: 600px) {
    .emotion-values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.emotion-value-item {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--glass-bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
}

.emotion-value-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.emotion-value-name {
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: capitalize;
}

.emotion-value-label {
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: capitalize;
    margin-bottom: var(--spacing-xs);
}

.emotion-value-bar-bg {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.emotion-value-bar {
    height: 100%;
    border-radius: 3px;
    transition: width var(--transition-normal);
}

.emotion-value-fill {
    height: 100%;
    border-radius: 2px;
    transition: width var(--transition-normal);
}

.emotion-value-fill.joy { background: linear-gradient(90deg, #fbbf24, #fcd34d); }
.emotion-value-fill.sadness { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.emotion-value-fill.anger { background: linear-gradient(90deg, #ef4444, #f87171); }
.emotion-value-fill.fear { background: linear-gradient(90deg, #8b5cf6, #a78bfa); }
.emotion-value-fill.disgust { background: linear-gradient(90deg, #10b981, #34d399); }
.emotion-value-fill.surprise { background: linear-gradient(90deg, #f97316, #fb923c); }
.emotion-value-fill.trust { background: linear-gradient(90deg, #14b8a6, #2dd4bf); }
.emotion-value-fill.anticipation { background: linear-gradient(90deg, #ec4899, #f472b6); }

.emotion-value-number {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   Time Display
   ============================================ */
.time-section {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--glass-bg);
    border-bottom: 1px solid var(--glass-border);
}

.time-text {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* ============================================
   Admin Panel
   ============================================ */
.admin-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: var(--spacing-md);
}

.admin-tab {
    padding: var(--spacing-sm) var(--spacing-md);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.admin-tab:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.admin-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.admin-panel {
    display: none;
}

.admin-panel.active {
    display: block;
}

.admin-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.admin-list-item-info {
    flex: 1;
    min-width: 0;
}

.admin-list-item-name {
    font-weight: 600;
    font-size: 0.85rem;
}

.admin-list-item-details {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.admin-list-item-badge {
    font-size: 0.65rem;
    padding: 2px var(--spacing-sm);
    border-radius: var(--radius-xs);
    background: var(--glass-bg);
    margin-left: var(--spacing-sm);
}

.admin-list-item-badge.default {
    background: var(--accent-subtle);
    color: var(--accent);
}

.admin-list-item-badge.inactive {
    background: var(--danger-subtle);
    color: var(--danger);
}

/* ============================================
   Quota Display
   ============================================ */
.quota-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-top: var(--spacing-xs);
}

.quota-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 3px;
    transition: width var(--transition-normal);
}

.quota-fill.low {
    background: linear-gradient(90deg, #ef4444, #f87171);
}

.quota-fill.medium {
    background: linear-gradient(90deg, #f59e0b, #fbbf24);
}

/* ============================================
   Markdown Styles
   ============================================ */
.md-code-block {
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    margin: var(--spacing-sm) 0;
    overflow-x: auto;
}

.md-code-block code {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.md-inline-code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: var(--radius-xs);
    font-family: var(--font-mono);
    font-size: 0.85em;
}

[data-theme="light"] .md-code-block {
    background: rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .md-inline-code {
    background: rgba(0, 0, 0, 0.05);
}

.md-blockquote {
    border-left: 3px solid var(--accent);
    padding-left: var(--spacing-sm);
    margin: var(--spacing-sm) 0;
    color: var(--text-secondary);
    font-style: italic;
}

.md-list {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-md);
}

.md-list-item {
    margin-bottom: 4px;
}

/* ============================================
   Settings Modal Sidebar
   ============================================ */
.settings-layout {
    display: flex;
    gap: var(--spacing-lg);
    margin: calc(-1 * var(--spacing-lg));
}

.settings-sidebar {
    width: 200px;
    padding: var(--spacing-md);
    background: var(--glass-bg);
    border-right: 1px solid var(--glass-border);
    flex-shrink: 0;
}

.settings-content {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
    max-height: 60vh;
}

.settings-sidebar-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-family: inherit;
}

.settings-sidebar-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.settings-sidebar-item.active {
    background: var(--accent-subtle);
    color: var(--accent);
}

.settings-panel {
    display: none;
}

.settings-panel.active {
    display: block;
}

@media (max-width: 600px) {
    .settings-layout {
        flex-direction: column;
    }
    
    .settings-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--glass-border);
    }
    
    .settings-content {
        max-height: none;
    }
}

/* ============================================
   Sheet Handle (Mobile Modal)
   ============================================ */
.sheet-handle {
    display: none;
}

@media (max-width: 768px) {
    .sheet-handle {
        display: block;
        width: 36px;
        height: 5px;
        background: var(--glass-border);
        border-radius: 3px;
        margin: var(--spacing-sm) auto;
        flex-shrink: 0;
    }
    
    [data-theme="light"] .sheet-handle {
        background: rgba(0, 0, 0, 0.15);
    }
}

@media (min-width: 769px) {
    .sheet-handle {
        display: none;
    }
}

/* ============================================
   Mobile-specific additional styles
   ============================================ */
@media (max-width: 768px) {
    .app-header {
        display: none;
    }
    
    .mobile-nav {
        display: flex;
        order: 100;
    }
    
    .mobile-nav .nav-item {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        pointer-events: auto;
        touch-action: manipulation;
    }
    
    .char-info-add-form {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .char-info-input,
    .char-info-select {
        width: 100%;
        min-height: 48px;
        font-size: 16px;
    }
    
    .emotion-radar-container {
        padding: 0;
    }
    
    .emotion-radar-container canvas {
        max-width: 100%;
        height: auto;
    }
    
    .admin-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .admin-tab {
        flex-shrink: 0;
        white-space: nowrap;
    }
    
    .modal-footer {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .modal-footer .btn {
        width: 100%;
    }
    
    .version-switcher {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .reasoning-content {
        font-size: 0.75rem;
    }
    
    .typing-indicator {
        padding: var(--spacing-xs) 0;
    }
    
    .typing-dots span {
        width: 5px;
        height: 5px;
    }
    
    .typing-stage-text {
        font-size: 0.75rem;
    }
    
    .system-message {
        margin-left: 0;
        margin-right: 0;
    }
    
    .multi-avatar-row {
        gap: var(--spacing-xs);
        padding: var(--spacing-sm);
    }
    
    .avatar-stack-item .message-avatar {
        width: 32px;
        height: 32px;
        font-size: 0.85rem;
    }
    
    .avatar-label {
        font-size: 0.65rem;
        max-width: 40px;
    }
    
    .avatar-divider {
        width: 16px;
        margin: 0 4px;
    }
}

/* PWA standalone mode adjustments */
@media (display-mode: standalone) {
    .app-header {
        padding-top: calc(var(--spacing-sm) + env(safe-area-inset-top, 20px));
    }
    
    .mobile-nav {
        padding-bottom: env(safe-area-inset-bottom, 20px);
    }
}

@media (max-width: 768px) and (display-mode: standalone) {
    .app-header {
        display: none;
    }
    
    .mobile-nav {
        padding-bottom: env(safe-area-inset-bottom, 20px);
    }
    
    .chat-input-area {
        padding-bottom: calc(var(--spacing-sm) + env(safe-area-inset-bottom, 20px));
    }
    
    .modal-content {
        max-height: calc(92vh - env(safe-area-inset-bottom, 0px));
    }
    
    .sidebar-mobile-header {
        padding-top: calc(var(--spacing-md) + env(safe-area-inset-top, 20px));
    }
}

/* ============================================
   Theme Toggle Button
   ============================================ */
#btn-theme-toggle .icon-sun {
    display: none;
}

#btn-theme-toggle .icon-moon {
    display: block;
}

[data-theme="light"] #btn-theme-toggle .icon-sun {
    display: block;
}

[data-theme="light"] #btn-theme-toggle .icon-moon {
    display: none;
}

#mobile-theme-toggle .icon-sun {
    display: none;
}

#mobile-theme-toggle .icon-moon {
    display: block;
}

[data-theme="light"] #mobile-theme-toggle .icon-sun {
    display: block;
}

[data-theme="light"] #mobile-theme-toggle .icon-moon {
    display: none;
}

.mobile-nav a.nav-item {
    text-decoration: none;
    color: var(--text-tertiary);
}

/* ============================================
   World Notes
   ============================================ */
.world-notes-section {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--glass-bg);
    border-bottom: 1px solid var(--glass-border);
}

.world-notes-section h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-sm);
}

.world-notes-textarea {
    width: 100%;
    min-height: 60px;
    padding: var(--spacing-sm);
    background: var(--bg-base);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
    resize: vertical;
}

.world-notes-textarea:focus {
    outline: none;
    border-color: var(--accent);
}