/* ====================================
   统一主题管理系统 - 深色/浅色模式
   ==================================== */

/* ====================================
   现代主题管理系统 v2.0 - 深色/浅色模式
   ==================================== */

:root {
    /* ========== 现代配色方案 ========== */
    
    /* 主色调 - 更加现代的蓝紫色 */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;
    
    /* 次要色调 - 紫色系 */
    --secondary-50: #faf5ff;
    --secondary-100: #f3e8ff;
    --secondary-200: #e9d5ff;
    --secondary-300: #d8b4fe;
    --secondary-400: #c084fc;
    --secondary-500: #a855f7;
    --secondary-600: #9333ea;
    --secondary-700: #7c3aed;
    --secondary-800: #6b21a8;
    --secondary-900: #581c87;
    
    /* 中性色 - Tailwind Slate */
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    
    /* 状态色 */
    --success-500: #10b981;
    --success-600: #059669;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    --error-500: #ef4444;
    --error-600: #dc2626;
    
    /* ========== 浅色模式语义化变量 ========== */ 
    --bg-primary: var(--slate-50);
    --bg-secondary: #ffffff;
    --bg-tertiary: var(--slate-100);
    
    --surface-primary: #ffffff;
    --surface-secondary: var(--slate-50);
    --surface-tertiary: var(--slate-100);
    --surface-elevated: #ffffff;
    
    --text-primary: var(--slate-900);
    --text-secondary: var(--slate-700);
    --text-tertiary: var(--slate-600);
    --text-quaternary: var(--slate-500);
    --text-inverse: #ffffff;
    
    --border-primary: var(--slate-200);
    --border-secondary: var(--slate-300);
    --border-tertiary: var(--slate-400);
    
    /* 现代阴影系统 */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* 交互状态 */
    --hover-overlay: rgba(0, 0, 0, 0.04);
    --active-overlay: rgba(0, 0, 0, 0.08);
    --focus-ring: 0 0 0 3px rgba(59, 130, 246, 0.15);
    
    /* 过渡动画 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== 深色模式语义化变量 ========== */
.dark {
    --bg-primary: var(--slate-900);
    --bg-secondary: var(--slate-800);
    --bg-tertiary: var(--slate-700);
    
    --surface-primary: var(--slate-800);
    --surface-secondary: var(--slate-700);
    --surface-tertiary: var(--slate-600);
    --surface-elevated: var(--slate-750, #293548);
    
    --text-primary: var(--slate-100);
    --text-secondary: var(--slate-300);
    --text-tertiary: var(--slate-400);
    --text-quaternary: var(--slate-500);
    --text-inverse: var(--slate-900);
    
    --border-primary: var(--slate-700);
    --border-secondary: var(--slate-600);
    --border-tertiary: var(--slate-500);
    
    /* 深色模式阴影 */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.25);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px -1px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
    
    /* 深色模式交互状态 */
    --hover-overlay: rgba(255, 255, 255, 0.08);
    --active-overlay: rgba(255, 255, 255, 0.12);
    --focus-ring: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

/* ========== 全局基础样式 ========== */
* {
    box-sizing: border-box;
}

html {
    /* 默认color-scheme，会被JS动态更新 */
    color-scheme: light;
}

body {
    margin: 0;
    font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, 'Apple Color Emoji', Arial, sans-serif, 'Segoe UI Emoji', 'Segoe UI Symbol';
    font-feature-settings: 'rlig' 1, 'calt' 1;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeSpeed;
}

/* 支持color-scheme */
.dark {
    color-scheme: dark;
}

/* ========== 现代组件样式 ========== */

/* 卡片组件 */
.theme-card {
    background-color: var(--surface-primary);
    border: 1px solid var(--border-primary);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.theme-card:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-secondary);
}

.theme-card-elevated {
    background-color: var(--surface-elevated);
    box-shadow: var(--shadow-lg);
}

.theme-card-interactive {
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-card-interactive:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.theme-card-interactive:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* 按钮组件 - 现代化设计 */
.theme-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.875rem;
    line-height: 1.25rem;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    outline: none;
    position: relative;
    user-select: none;
    white-space: nowrap;
}

.theme-btn:focus-visible {
    box-shadow: var(--focus-ring);
}

.theme-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* 主要按钮 */
.theme-btn-primary {
    background-color: var(--primary-600);
    color: white;
    border-color: var(--primary-600);
    box-shadow: var(--shadow-xs);
}

.theme-btn-primary:hover:not(:disabled) {
    background-color: var(--primary-700);
    border-color: var(--primary-700);
    box-shadow: var(--shadow-sm);
}

.theme-btn-primary:active:not(:disabled) {
    background-color: var(--primary-800);
    transform: translateY(0.5px);
}

/* 次要按钮 */
.theme-btn-secondary {
    background-color: var(--surface-primary);
    color: var(--text-secondary);
    border-color: var(--border-primary);
}

.theme-btn-secondary:hover:not(:disabled) {
    background-color: var(--surface-secondary);
    border-color: var(--border-secondary);
    color: var(--text-primary);
}

/* 文本按钮 */
.theme-btn-ghost {
    background-color: transparent;
    color: var(--text-secondary);
    border-color: transparent;
}

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

/* ========== 现代输入组件 ========== */
.theme-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    background-color: var(--surface-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    line-height: 1.25rem;
    transition: all var(--transition-fast);
    outline: none;
}

.theme-input:focus {
    border-color: var(--primary-500);
    box-shadow: var(--focus-ring);
}

.theme-input::placeholder {
    color: var(--text-quaternary);
}

.theme-input:disabled {
    background-color: var(--surface-secondary);
    color: var(--text-quaternary);
    cursor: not-allowed;
    opacity: 0.7;
}

/* ========== 现代文本样式 ========== */
.theme-text-primary { color: var(--text-primary); }
.theme-text-secondary { color: var(--text-secondary); }
.theme-text-tertiary { color: var(--text-tertiary); }
.theme-text-quaternary { color: var(--text-quaternary); }

/* 标题样式 - 更现代的字体大小 */
.theme-heading-1 {
    font-size: 2.25rem; /* 36px */
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.025em;
}

.theme-heading-2 {
    font-size: 1.875rem; /* 30px */
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
    letter-spacing: -0.025em;
}

.theme-heading-3 {
    font-size: 1.5rem; /* 24px */
    font-weight: 600;
    line-height: 1.33;
    color: var(--text-primary);
}

.theme-heading-4 {
    font-size: 1.25rem; /* 20px */
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
}

.theme-heading-5 {
    font-size: 1.125rem; /* 18px */
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
}

.theme-heading-6 {
    font-size: 1rem; /* 16px */
    font-weight: 600;
    line-height: 1.5;
    color: var(--text-primary);
}

/* ========== 现代状态样式 ========== */
.theme-status-success {
    color: var(--success-600);
    background-color: color-mix(in srgb, var(--success-500) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--success-500) 20%, transparent);
}

.theme-status-warning {
    color: var(--warning-600);
    background-color: color-mix(in srgb, var(--warning-500) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--warning-500) 20%, transparent);
}

.theme-status-error {
    color: var(--error-600);
    background-color: color-mix(in srgb, var(--error-500) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--error-500) 20%, transparent);
}

.theme-status-info {
    color: var(--primary-600);
    background-color: color-mix(in srgb, var(--primary-500) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--primary-500) 20%, transparent);
}

/* 降级支持不支持color-mix的浏览器 */
@supports not (color: color-mix(in srgb, red 50%, blue)) {
    .theme-status-success {
        background-color: rgba(16, 185, 129, 0.1);
        border-color: rgba(16, 185, 129, 0.2);
    }
    
    .theme-status-warning {
        background-color: rgba(245, 158, 11, 0.1);
        border-color: rgba(245, 158, 11, 0.2);
    }
    
    .theme-status-error {
        background-color: rgba(239, 68, 68, 0.1);
        border-color: rgba(239, 68, 68, 0.2);
    }
    
    .theme-status-info {
        background-color: rgba(59, 130, 246, 0.1);
        border-color: rgba(59, 130, 246, 0.2);
    }
}

/* ========== 现代主题切换按钮样式 ========== */
/* 旧的切换按钮样式保留兼容性 */
.theme-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.75rem;
    background-color: var(--surface-elevated);
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 9999;
    color: var(--text-primary);
    backdrop-filter: blur(8px);
}

.theme-toggle:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    background-color: var(--surface-secondary);
}

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

/* 现代切换按钮样式已在JS中定义 */

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
    .theme-toggle,
    .modern-theme-toggle {
        top: 0.75rem;
        right: 0.75rem;
        width: 2.25rem;
        height: 2.25rem;
        font-size: 0.8125rem;
    }
    
    .theme-card {
        padding: 1rem;
        border-radius: 8px;
    }
    
    .theme-btn {
        padding: 0.5rem 1rem;
        font-size: 0.8125rem;
    }
    
    .theme-heading-1 { font-size: 1.875rem; }
    .theme-heading-2 { font-size: 1.5rem; }
    .theme-heading-3 { font-size: 1.25rem; }
    .theme-heading-4 { font-size: 1.125rem; }
}

@media (max-width: 480px) {
    .theme-card { padding: 0.75rem; }
    .theme-btn { padding: 0.5rem 0.875rem; }
}

/* ========== 现代动画效果 ========== */
@keyframes theme-fade-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes theme-slide-in {
    from {
        opacity: 0;
        transform: translateX(16px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes theme-scale-in {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.theme-animate-fade-in {
    animation: theme-fade-in 0.4s var(--transition-normal) forwards;
}

.theme-animate-slide-in {
    animation: theme-slide-in 0.3s var(--transition-normal) forwards;
}

.theme-animate-scale-in {
    animation: theme-scale-in 0.2s var(--transition-normal) forwards;
}

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

/* ========== 现代滚动条样式 ========== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb {
    background: var(--border-tertiary);
    border-radius: 3px;
    transition: background-color var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-quaternary);
}

::-webkit-scrollbar-corner {
    background: var(--bg-secondary);
}

/* 现代Firefox滚动条 */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-tertiary) var(--bg-secondary);
}

/* ========== 现代工具类 ========== */
.theme-backdrop-blur {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.theme-glass {
    background: color-mix(in srgb, var(--surface-primary) 80%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid color-mix(in srgb, var(--border-primary) 50%, transparent);
}

/* 降级支持 */
@supports not (color: color-mix(in srgb, red 50%, blue)) {
    .theme-glass {
        background: var(--surface-primary);
        opacity: 0.95;
    }
}

.theme-focus-ring {
    outline: none;
    box-shadow: var(--focus-ring);
}

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

/* 实用动画类 */
.theme-transition {
    transition: all var(--transition-normal);
}

.theme-transition-fast {
    transition: all var(--transition-fast);
}

.theme-transition-slow {
    transition: all var(--transition-slow);
}

/* ========== 打印样式 ========== */
@media print {
    .theme-toggle,
    .modern-theme-toggle {
        display: none !important;
    }
    
    .theme-card {
        box-shadow: none;
        border: 1px solid #ccc;
        break-inside: avoid;
    }
    
    .theme-btn {
        border: 1px solid #000;
        color: #000 !important;
        background: transparent !important;
    }
    
    * {
        color-adjust: exact;
        -webkit-print-color-adjust: exact;
    }
}