/* AI人格对话体验中心 - 基于AgentPsy设计风格 */

/* ========================
   CSS Variables & Design System
   ======================== */
:root {
    /* AgentPsy Color Palette */
    --primary-color: #007bff;
    --primary-dark: #0056b3;
    --primary-light: #66b3ff;
    --secondary-color: #6a11cb;
    --secondary-light: #8b5cf6;
    --accent-color: #10b981;
    --accent-light: #34d399;

    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f8f9fa;
    --gray-100: #e9ecef;
    --gray-200: #dee2e6;
    --gray-300: #ced4da;
    --gray-400: #adb5bd;
    --gray-500: #6c757d;
    --gray-600: #495057;
    --gray-700: #343a40;
    --gray-800: #212529;
    --gray-900: #1a1a2e;

    /* Text Colors */
    --text-primary: #2c3e50;
    --text-secondary: #6c757d;
    --text-muted: #94a3b8;
    --text-light: #ffffff;

    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --bg-dark: #1a1a2e;
    --bg-surface: rgba(255, 255, 255, 0.95);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-hero: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-full: 9999px;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.35s ease;

    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================
   Loading Screen
   ======================== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    color: var(--white);
}

.loading-icon {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
    animation: float 3s ease-in-out infinite;
}

.loading-content h2 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.loading-dots {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    background: var(--white);
    border-radius: 50%;
    animation: bounce 1.4s ease-in-out infinite both;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }

/* ========================
   App Layout
   ======================== */
.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ========================
   Header
   ======================== */
.header {
    background: var(--bg-surface);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    transition: all var(--transition-normal);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 2px 8px rgba(102, 126, 234, 0.3));
}

.logo-text h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text span {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.nav {
    display: flex;
    gap: var(--space-xs);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: transparent;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.nav-btn:hover {
    background: var(--gray-100);
    color: var(--text-primary);
}

.nav-btn.active {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: transparent;
}

.nav-icon {
    font-size: 1.1rem;
}

.header-actions {
    display: flex;
    gap: var(--space-sm);
}


/* ========================
   Main Content
   ======================== */
.main {
    flex: 1;
    padding: var(--space-xl) 0;
}

.view {
    display: none;
}

.view.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* ========================
   Chat Layout
   ======================== */
.chat-layout {
    display: grid;
    grid-template-columns: 260px 1fr 280px;
    gap: var(--space-md);
    height: calc(100vh - 200px);
    min-height: 600px;
}

/* Personality Sidebar */
.personality-sidebar {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--gray-200);
}

.sidebar-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

/* Mode Toggle Styles */
.mode-toggle-container {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
    position: relative;
}

.mode-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    flex: 1;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.mode-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.mode-toggle:hover::before {
    left: 100%;
}

.mode-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.mode-toggle:active {
    transform: translateY(0);
}

.mode-toggle[data-mode="multi"] {
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
}

.mode-toggle[data-mode="multi"]:hover {
    box-shadow: 0 8px 25px rgba(106, 17, 203, 0.3);
}

.mode-icon {
    font-size: 1rem;
    transition: transform var(--transition-normal);
}

.mode-toggle:hover .mode-icon {
    transform: scale(1.1);
}

.mode-text {
    font-size: 0.8rem;
    font-weight: 500;
}

.selected-count {
    background: var(--gray-100);
    color: var(--text-secondary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    min-width: 24px;
    text-align: center;
    border: 1px solid var(--gray-200);
    transition: all var(--transition-normal);
}

.selected-count:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
    transform: scale(1.05);
}

/* Tooltip styles */
[title] {
    position: relative;
}

/* Enhanced tooltips */
.mode-toggle {
    position: relative;
}

.mode-toggle::after {
    content: attr(title);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gray-800);
    color: var(--white);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: var(--z-tooltip);
    margin-bottom: var(--space-xs);
}

.mode-toggle:hover::after {
    opacity: 1;
    visibility: visible;
}

/* Mode indicator animation */
.mode-toggle[data-mode="multi"] .mode-icon {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* Keyboard shortcut hint */
.keyboard-hint {
    position: absolute;
    top: -20px;
    right: 0;
    background: var(--gray-700);
    color: var(--white);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.6rem;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.mode-toggle:hover .keyboard-hint {
    opacity: 1;
}


.personality-categories {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--gray-200);
}

.category-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: var(--gray-100);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.category-btn:hover {
    background: var(--gray-200);
    color: var(--text-primary);
}

.category-btn.active {
    background: var(--gradient-primary);
    color: var(--white);
}

.personality-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
}

.personality-card {
    background: var(--bg-secondary);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 6px;
    margin-bottom: 4px;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 6px;
}

.personality-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.personality-card.active {
    background: var(--gradient-primary);
    border-color: var(--primary-color);
    color: var(--white);
}

.personality-avatar {
    width: 16px;
    height: 16px;
    border-radius: var(--radius-full);
    background: var(--gradient-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    flex-shrink: 0;
}

.personality-info {
    flex: 1;
}

.personality-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.personality-name {
    font-weight: 500;
    font-size: 0.7rem;
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: 2px;
}

.personality-type {
    font-size: 0.6rem;
    opacity: 0.7;
    color: var(--text-secondary);
    line-height: 1.0;
}

.personality-actions {
    display: flex;
    gap: var(--space-xs);
}

.personality-action-btn {
    width: 28px;
    height: 28px;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.personality-action-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

/* Chat Area */
.chat-area {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.personality-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.personality-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.personality-details h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.personality-details p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.chat-controls {
    display: flex;
    gap: var(--space-sm);
}

.control-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.control-btn:hover {
    background: var(--gray-200);
    transform: translateY(-1px);
}

.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
}

.messages-container::-webkit-scrollbar {
    width: 6px;
}

.messages-container::-webkit-scrollbar-track {
    background: var(--gray-100);
}

.messages-container::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 3px;
}

.welcome-message {
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
    color: var(--text-secondary);
}

.welcome-icon {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
    opacity: 0.6;
}

.welcome-message h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.welcome-message p {
    font-size: 1.1rem;
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.quick-features {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-top: var(--space-xl);
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.feature-icon {
    font-size: 2rem;
}

.feature-text {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Messages */
.message {
    display: flex;
    margin-bottom: var(--space-lg);
    animation: slideInUp 0.3s ease;
}

.message.user {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--gradient-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    margin: 0 var(--space-sm);
}

.message-content {
    max-width: 70%;
    background: var(--bg-secondary);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-sm);
}

.message.user .message-content {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: var(--primary-color);
}

.message-header {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
}

.message-text {
    font-size: 0.95rem;
    line-height: 1.5;
    word-wrap: break-word;
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* Input Area */
.input-area {
    padding: var(--space-lg);
    border-top: 1px solid var(--gray-200);
}

.input-container {
    display: flex;
    gap: var(--space-sm);
    align-items: flex-end;
    background: var(--bg-secondary);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--space-sm);
    transition: all var(--transition-normal);
}

.input-container:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

#messageInput {
    flex: 1;
    border: none;
    background: transparent;
    resize: none;
    font-family: var(--font-family);
    font-size: 0.95rem;
    line-height: 1.5;
    max-height: 120px;
    min-height: 24px;
}

#messageInput:focus {
    outline: none;
}

#messageInput::placeholder {
    color: var(--text-muted);
}

.input-actions {
    display: flex;
    gap: var(--space-xs);
}


.send-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    color: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.send-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.send-btn:active {
    transform: translateY(0);
}

.input-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--space-sm);
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Conversations Panel */
.conversations-panel {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.panel-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}


.conversations-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-md);
}

.empty-conversations {
    text-align: center;
    padding: var(--space-3xl) var(--space-md);
    color: var(--text-muted);
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    opacity: 0.6;
}

.empty-conversations p {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
}

.empty-conversations small {
    font-size: 0.85rem;
}

.panel-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--gray-200);
}

.stats {
    display: flex;
    justify-content: space-around;
}

.stat-item {
    text-align: center;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: block;
}

.stat-value {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Memory Controls */
.memory-controls {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
    justify-content: center;
}

.memory-btn {
    padding: var(--space-xs) var(--space-sm);
    background: var(--gray-100);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 4px;
}

.memory-btn:hover {
    background: var(--gray-200);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.memory-btn:active {
    transform: translateY(0);
}

.memory-stats {
    opacity: 0.8;
}

.memory-stats .stat-item {
    margin-bottom: var(--space-xs);
}

.memory-stats .stat-label {
    font-size: 0.7rem;
}

.memory-stats .stat-value {
    font-size: 1rem;
}

/* Personality Controls */
.personality-controls {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
    justify-content: center;
}

.personality-control-btn {
    padding: var(--space-xs) var(--space-sm);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--white);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 4px;
}

.personality-control-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.personality-control-btn:active {
    transform: translateY(0);
}

/* Model Controls */
.model-controls {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.model-selector {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.model-selector label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    text-align: center;
}

.model-select {
    width: 100%;
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-primary);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 0.8rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.model-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.model-select:hover {
    border-color: var(--primary-color);
    background: var(--bg-secondary);
}

.model-select option {
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: var(--space-xs);
}

/* Personality Editor Modal */
.personality-editor-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.personality-editor-modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    max-width: 700px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.personality-editor-modal.show .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--gradient-primary);
    color: var(--white);
}

.modal-header h3 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.modal-close-btn {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

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

.editor-section {
    margin-bottom: var(--space-xl);
}

.editor-section h4 {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--primary-color);
}

.editor-subsection {
    margin-bottom: var(--space-lg);
}

.editor-subsection:last-child {
    margin-bottom: 0;
}

.editor-subsection h5 {
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-sm);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 0.9rem;
    transition: all var(--transition-normal);
    background: var(--bg-secondary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
    background: var(--bg-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
    line-height: 1.5;
}

.modal-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--gray-200);
    display: flex;
    gap: var(--space-md);
    justify-content: flex-end;
    background: var(--bg-secondary);
}

/* 滚动条样式 */
.modal-body::-webkit-scrollbar {
    width: 6px;
}

.modal-body::-webkit-scrollbar-track {
    background: var(--gray-100);
}

.modal-body::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 3px;
}

.modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* 标签选择样式 */
.tag-selection {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.tag-group {
    background: var(--bg-secondary);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.tag-group label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    font-size: 0.9rem;
}

.tag-options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.tag-btn {
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-primary);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.tag-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(0, 123, 255, 0.05);
    transform: translateY(-1px);
}

.tag-btn.selected {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.tag-btn.selected:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

/* 表单行布局 */
.form-row {
    display: flex;
    gap: var(--space-md);
    align-items: flex-end;
}

.form-group.half {
    flex: 1;
}


/* ========================
   Explore View
   ======================== */
.explore-layout {
    padding: var(--space-2xl);
}

.explore-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.explore-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.explore-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.explore-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
}

.explore-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    text-align: center;
}

.explore-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.explore-avatar {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto var(--space-lg);
}

.explore-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.explore-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.explore-traits {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
}

.trait-tag {
    background: var(--gray-100);
    color: var(--text-primary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
}

/* ========================
   Footer
   ======================== */
.footer {
    background: var(--bg-dark);
    color: var(--white);
    padding: var(--space-2xl) 0;
    margin-top: var(--space-3xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.footer-info p {
    margin-bottom: var(--space-xs);
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer-motto {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-motto p {
    margin: var(--space-xs) 0;
    font-style: italic;
    font-size: 0.9rem;
    color: var(--gray-300);
    line-height: 1.4;
}

.footer-motto p:first-child {
    font-weight: 500;
    color: var(--white);
}

.footer-link {
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.footer-link:hover {
    color: var(--white);
}

.footer-brand-link {
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-normal);
}

.footer-brand-link:hover {
    color: var(--primary-light);
}

.footer-social {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.social-label {
    font-size: 0.9rem;
    margin-right: var(--space-sm);
}

.social-link {
    color: var(--gray-400);
    text-decoration: none;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
}

.social-link:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
}

.social-link.brand-link {
    background: rgba(0, 123, 255, 0.2);
    color: var(--primary-light);
}

.social-link.brand-link:hover {
    background: rgba(0, 123, 255, 0.3);
    color: var(--white);
    transform: translateY(-2px);
}

.brand-logo {
    font-size: 1.2rem;
}

/* ========================
   Toast Notifications
   ======================== */
.toast-container {
    position: fixed;
    top: var(--space-xl);
    right: var(--space-xl);
    z-index: var(--z-tooltip);
}

.toast {
    background: var(--bg-primary);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--space-sm);
    min-width: 250px;
    animation: slideInRight 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.toast.success {
    border-left: 4px solid var(--accent-color);
}

.toast.error {
    border-left: 4px solid #ef4444;
}

.toast.info {
    border-left: 4px solid var(--primary-color);
}

.toast-icon {
    font-size: 1.2rem;
}

.toast-message {
    flex: 1;
}

.toast-close {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-muted);
    padding: 0;
}


/* ========================
   Animations
   ======================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* ========================
   Responsive Design
   ======================== */
@media (max-width: 1200px) {
    .chat-layout {
        grid-template-columns: 280px 1fr;
        gap: var(--space-md);
    }

    .conversations-panel {
        display: none;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }

    .header-content {
        flex-direction: column;
        gap: var(--space-md);
        padding: var(--space-md) 0;
    }

    .chat-layout {
        grid-template-columns: 1fr;
        height: calc(100vh - 160px);
    }

    .personality-sidebar {
        display: none;
    }

    .chat-area {
        border-radius: var(--radius-lg);
    }

    .welcome-message {
        padding: var(--space-2xl) var(--space-md);
    }

    .quick-features {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .explore-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--space-lg);
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--space-md);
    }

    .footer-motto {
        text-align: center;
    }

    .footer-motto p {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .logo-text h1 {
        font-size: 1.2rem;
    }

    .logo-text span {
        font-size: 0.75rem;
    }

    .nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    .welcome-message h3 {
        font-size: 1.3rem;
    }

    .welcome-message p {
        font-size: 1rem;
    }

    .btn {
        width: 100%;
    }
}

/* ========================
   Accessibility
   ======================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles */
button:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --bg-primary: #ffffff;
        --bg-secondary: #f0f0f0;
        --text-primary: #000000;
        --text-secondary: #333333;
        --border-color: #666666;
    }

    .gradient-primary,
    .gradient-secondary,
    .gradient-accent {
        background: var(--primary-color);
    }
}

/* Print styles */
@media print {
    .header,
    .footer,
    .loading-screen,
    .toast-container,
    .emoji-picker {
        display: none !important;
    }

    .main {
        padding: 0;
    }

    .chat-layout {
        display: block;
        height: auto;
    }

    .personality-sidebar,
    .conversations-panel {
        display: none;
    }
}

/* ========================
   Multi-Personality Mode Styles
   ======================== */

/* Selected state for personality cards */
.personality-card.selected {
    background: var(--gradient-primary);
    border-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.personality-card.selected .personality-name,
.personality-card.selected .personality-type {
    color: var(--white);
}

.personality-card.selected .personality-type {
    opacity: 0.9;
}

/* Multi-personality display in header */
.multi-personality-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.multi-avatars {
    display: flex;
    align-items: center;
    gap: -8px;
}

.multi-avatar {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    background: var(--gradient-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    border: 2px solid var(--bg-primary);
    margin-left: -8px;
}

.multi-avatar:first-child {
    margin-left: 0;
}

/* Multi-personality badge */
.multi-personality-badge {
    background: var(--gradient-secondary);
    color: var(--white);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 500;
    margin-left: var(--space-sm);
}

/* Multi-personality welcome message */
.multi-welcome {
    background: linear-gradient(135deg, var(--gray-50), var(--gray-100));
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.multi-personality-preview {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
    margin: var(--space-lg) 0;
}

.personality-preview-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-primary);
    border: 2px solid;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    transition: all var(--transition-normal);
}

.personality-preview-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.preview-avatar {
    font-size: 1rem;
}

.preview-name {
    font-weight: 500;
}

/* Multi-personality message styling */
.message.agent[data-personality] {
    border-left: 4px solid var(--primary-color);
}

.message.error .message-bubble {
    background: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

/* Thinking text in typing indicator */
.thinking-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-left: var(--space-sm);
    font-style: italic;
}

/* Simplified thinking text style */
.thinking-text-simple {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
    opacity: 0.8;
}

/* Enhanced message bubble styling */
.message-bubble {
    line-height: 1.5;
    word-wrap: break-word;
    white-space: pre-wrap;
}

.message-bubble strong {
    font-weight: 600;
}

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

/* Responsive adjustments for multi-personality */
@media (max-width: 1200px) {
    .multi-avatars {
        gap: -4px;
    }

    .multi-avatar {
        width: 20px;
        height: 20px;
        font-size: 0.7rem;
        border-width: 1px;
        margin-left: -4px;
    }

    .multi-personality-preview {
        gap: var(--space-xs);
    }

    .personality-preview-item {
        font-size: 0.8rem;
        padding: 2px var(--space-xs);
    }
}

@media (max-width: 768px) {
    .multi-personality-info {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .multi-avatars {
        gap: -6px;
    }

    .multi-avatar {
        width: 20px;
        height: 20px;
        font-size: 0.7rem;
    }

    .multi-personality-preview {
        flex-direction: column;
        align-items: center;
    }
}