/**
 * ダークモード CSS
 * 職場コミュニケーション練習アプリ
 */

/* ダークモード変数 */
[data-theme="dark"] {
    /* Background Colors */
    --bg-main: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-accent: #0f3460;
    --secondary-color: var(--bg-secondary);
    
    /* Primary Colors - 明るめに調整 */
    --primary-color: #6366f1;
    --primary-hover: #818cf8;
    --primary-light: #1e1b4b;
    
    /* Text Colors */
    --text-color: #e2e8f0;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-on-primary: #ffffff;
    
    /* Semantic Colors */
    --success-color: #34d399;
    --warning-color: #fbbf24;
    --danger-color: #f87171;
    --info-color: #60a5fa;
    
    /* Design Elements */
    --border-color: #334155;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --hover-lift: 0 8px 16px rgba(0, 0, 0, 0.4);
}

/* Body Dark Mode */
[data-theme="dark"] body {
    background-color: var(--bg-main);
    color: var(--text-color);
}

/* Container */
[data-theme="dark"] #chat-container {
    background-color: var(--bg-main);
}

/* Header */
[data-theme="dark"] h1 {
    background: linear-gradient(135deg, var(--primary-color) 0%, #8b5cf6 100%);
}

[data-theme="dark"] h2,
[data-theme="dark"] h3 {
    color: var(--text-primary);
}

/* Cards */
[data-theme="dark"] .feature-card,
[data-theme="dark"] .content-section,
[data-theme="dark"] .settings-section,
[data-theme="dark"] .info-section,
[data-theme="dark"] .welcome-section {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    box-shadow: var(--box-shadow);
}

[data-theme="dark"] .feature-card:hover {
    box-shadow: var(--hover-lift);
    border-color: var(--primary-color);
}

/* Input & Select */
[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea,
[data-theme="dark"] .enhanced-select {
    background-color: var(--bg-accent);
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] input:focus,
[data-theme="dark"] select:focus,
[data-theme="dark"] textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

/* Buttons */
[data-theme="dark"] .primary-button {
    background-color: var(--primary-color);
    color: var(--text-on-primary);
}

[data-theme="dark"] .primary-button:hover {
    background-color: var(--primary-hover);
}

[data-theme="dark"] .secondary-button {
    background-color: var(--bg-accent);
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] .secondary-button:hover {
    background-color: var(--border-color);
}

/* Chat Messages */
[data-theme="dark"] #chat-messages {
    background-color: var(--bg-secondary);
}

[data-theme="dark"] .message {
    background-color: var(--bg-accent);
    color: var(--text-primary);
}

[data-theme="dark"] .bot-message {
    background-color: var(--primary-light);
    border-left-color: var(--primary-color);
}

[data-theme="dark"] .user-message {
    background-color: var(--bg-accent);
}

[data-theme="dark"] .system-message {
    background-color: rgba(96, 165, 250, 0.15);
    color: var(--info-color);
    border-left-color: var(--info-color);
}

[data-theme="dark"] .error-message {
    background-color: rgba(248, 113, 113, 0.15);
    color: var(--danger-color);
    border-left-color: var(--danger-color);
}

/* Navigation */
[data-theme="dark"] .navigation {
    background-color: var(--bg-secondary);
    border-top-color: var(--border-color);
}

[data-theme="dark"] .nav-button {
    color: var(--text-primary);
    background-color: var(--bg-accent);
}

[data-theme="dark"] .nav-button:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Links */
[data-theme="dark"] a {
    color: var(--info-color);
}

[data-theme="dark"] a:hover {
    color: var(--primary-hover);
}

/* Setting Groups */
[data-theme="dark"] .setting-group {
    background-color: var(--bg-accent);
}

[data-theme="dark"] .speed-setting {
    background-color: var(--bg-accent);
    border-color: var(--border-color);
}

/* Speed Slider */
[data-theme="dark"] .speed-slider {
    background: linear-gradient(to right, var(--primary-color) 0%, var(--border-color) 0%);
}

[data-theme="dark"] .speed-slider::-webkit-slider-thumb {
    background: var(--primary-color);
}

[data-theme="dark"] .speed-slider::-moz-range-thumb {
    background: var(--primary-color);
}

/* Reference Section */
[data-theme="dark"] .reference-section {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .reference-list a {
    color: var(--info-color);
}

/* Usage Steps */
[data-theme="dark"] .usage-step {
    background-color: var(--bg-accent);
}

[data-theme="dark"] .step-number {
    background-color: var(--primary-color);
}

/* Category Cards */
[data-theme="dark"] .regular-category {
    border-color: var(--success-color);
}

[data-theme="dark"] .harassment-category {
    border-color: var(--warning-color);
}

[data-theme="dark"] .small-talk-category {
    border-color: var(--info-color);
}

[data-theme="dark"] .watch-mode-category {
    border-color: #a78bfa;
}

/* Warning Notice */
[data-theme="dark"] .warning-notice {
    background-color: rgba(251, 191, 36, 0.15);
    color: var(--warning-color);
}

/* Scrollbar */
[data-theme="dark"] ::-webkit-scrollbar {
    width: 10px;
}

[data-theme="dark"] ::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* ========== Theme Toggle Button ========== */
.theme-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Light mode button */
.theme-toggle {
    background-color: var(--primary-color, #3b3b6b);
    color: white;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

/* Dark mode button */
[data-theme="dark"] .theme-toggle {
    background-color: #fbbf24;
    color: #1a1a2e;
}

/* Icon rotation animation */
.theme-toggle i {
    transition: transform 0.5s ease;
}

.theme-toggle:hover i {
    transform: rotate(30deg);
}

/* Tooltip */
.theme-toggle::after {
    content: attr(data-tooltip);
    position: absolute;
    right: 60px;
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 14px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

/* Mobile adjustments */
@media (max-width: 768px) {
    .theme-toggle {
        bottom: 15px;
        right: 15px;
        width: 45px;
        height: 45px;
        font-size: 18px;
    }
    
    .theme-toggle::after {
        display: none;
    }
}