/* ============================================ */
/* Tailwind CSS v4 配置 - 中华小吃网主题 */
/* ============================================ */
@import "tailwindcss";
@plugin "@tailwindcss/typography";
@plugin "@tailwindcss/forms";
@plugin "@tailwindcss/aspect-ratio";

/* Tailwind v4 主题配置 */
@theme {
    /* ===== 品牌色彩系统 ===== */
    /* 主色 - 红色系 (代表热情、辣味、中国传统) */
    --color-primary: #e74c3c;
    --color-primary-dark: #c0392b;
    --color-primary-light: #fadbd8;
    --color-primary-50: #fef2f2;
    --color-primary-100: #fee2e2;
    --color-primary-200: #fecaca;
    --color-primary-300: #fca5a5;
    --color-primary-400: #f87171;
    --color-primary-500: #e74c3c;
    --color-primary-600: #c0392b;
    --color-primary-700: #991f17;
    --color-primary-800: #7f1d1d;
    --color-primary-900: #5c0f0f;

    /* 次要色 - 橙黄色系 (代表美食诱惑、温暖) */
    --color-secondary: #f39c12;
    --color-secondary-dark: #d68910;
    --color-secondary-light: #fef5e7;
    --color-secondary-50: #fffbf0;
    --color-secondary-100: #fef5e7;
    --color-secondary-200: #fde9c8;
    --color-secondary-300: #fcd79e;
    --color-secondary-400: #fabe5c;
    --color-secondary-500: #f39c12;
    --color-secondary-600: #d68910;
    --color-secondary-700: #b8750e;
    --color-secondary-800: #9a620c;
    --color-secondary-900: #7c4f0a;

    /* 强调色 - 绿色系 (代表新鲜、健康) */
    --color-accent: #27ae60;
    --color-accent-dark: #1e8449;
    --color-accent-light: #e8f8f5;
    --color-accent-50: #f0fdf4;
    --color-accent-100: #dcfce7;
    --color-accent-200: #bbf7d0;
    --color-accent-300: #86efac;
    --color-accent-400: #4ade80;
    --color-accent-500: #27ae60;
    --color-accent-600: #1e8449;
    --color-accent-700: #166534;
    --color-accent-800: #14532d;
    --color-accent-900: #052e16;

    /* ===== 文字颜色系统 ===== */
    --color-text-primary: #2c3e50;
    --color-text-secondary: #7f8c8d;
    --color-text-light: #95a5a6;
    --color-text-lighter: #bdc3c7;
    --color-text-white: #ffffff;

    /* ===== 背景色系统 ===== */
    --color-bg-white: #ffffff;
    --color-bg-gray: #f8f9fa;
    --color-bg-gray-light: #ecf0f1;
    --color-bg-dark: #2c3e50;
    --color-bg-darker: #1a252f;

    /* ===== 边框和分割线 ===== */
    --color-border: #ecf0f1;
    --color-border-light: #f5f5f5;
    --color-border-dark: #d5d8dc;

    /* ===== 状态颜色 ===== */
    --color-success: #27ae60;
    --color-warning: #f39c12;
    --color-error: #e74c3c;
    --color-info: #3498db;

    /* ===== 特殊用途颜色 ===== */
    --color-discount: #e74c3c;
    --color-badge: #f39c12;
    --color-hot: #ff6b6b;
    --color-new: #00d2ff;

    /* ===== 字体家族 ===== */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    --font-serif: "Noto Serif SC", "Songti SC", Georgia, "Times New Roman", serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;

    /* ===== 字体大小 ===== */
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    --font-size-5xl: 3rem;        /* 48px */
    --font-size-6xl: 3.75rem;     /* 60px */

    /* ===== 圆角 ===== */
    --radius-sm: 0.25rem;         /* 4px */
    --radius-base: 0.5rem;        /* 8px */
    --radius-md: 0.75rem;         /* 12px */
    --radius-lg: 1rem;            /* 16px */
    --radius-xl: 1.5rem;          /* 24px */
    --radius-full: 9999px;

    /* ===== 阴影 ===== */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-base: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-hover: 0 5px 20px rgba(0, 0, 0, 0.15);

    /* ===== 过渡动画 ===== */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* ===== Z-index层级 ===== */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;

    /* ===== 容器宽度 ===== */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1200px;
    --container-2xl: 1400px;

    /* ===== 自定义动画 ===== */
    --animate-fadeIn: fadeIn 0.3s ease-in;
    --animate-fadeInUp: fadeInUp 0.6s ease-out;
    --animate-slideInLeft: slideInLeft 0.8s ease;
    --animate-bounce: bounce 1s infinite;
}

/* ===== 全局基础样式 ===== */
html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-white);
}

/* ===== 自定义滚动条 ===== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--color-text-lighter);
    border-radius: var(--radius-full);
}

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

/* ===== 选中文本样式 ===== */
::selection {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
}

::-moz-selection {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
}

/* ===== 动画定义 ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* ===== 图片懒加载占位符 ===== */
img[loading="lazy"] {
    background: var(--color-bg-gray);
}

/* ===== 按钮基础样式增强 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-radius: var(--radius-base);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    outline: none;
    text-decoration: none;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-text-white);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--color-secondary);
    color: var(--color-text-white);
}

.btn-secondary:hover {
    background: var(--color-secondary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-text-white);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--font-size-lg);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-sm);
}

/* ===== 卡片悬停效果 ===== */
.card-hover {
    transition: all var(--transition-base);
}

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

/* ===== 图片缩放效果 ===== */
.image-zoom-container {
    overflow: hidden;
    border-radius: var(--radius-base);
}

.image-zoom {
    transition: transform var(--transition-slow);
}

.image-zoom-container:hover .image-zoom {
    transform: scale(1.1);
}

/* ===== 渐变遮罩效果 ===== */
.gradient-overlay-dark {
    position: relative;
}

.gradient-overlay-dark::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(0,0,0,0.7) 0%, transparent 60%);
    z-index: 1;
}

.gradient-overlay-light {
    position: relative;
}

.gradient-overlay-light::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.7) 100%);
    z-index: 1;
}

/* ===== 徽章样式 ===== */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem 0.75rem;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
}

.badge-primary {
    background: var(--color-primary);
    color: var(--color-text-white);
}

.badge-secondary {
    background: var(--color-secondary);
    color: var(--color-text-white);
}

.badge-success {
    background: var(--color-success);
    color: var(--color-text-white);
}

.badge-discount {
    background: var(--color-discount);
    color: var(--color-text-white);
}

.badge-hot {
    background: var(--color-hot);
    color: var(--color-text-white);
    animation: pulse 2s infinite;
}

.badge-new {
    background: var(--color-new);
    color: var(--color-text-white);
}

/* ===== 加载状态 ===== */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ===== Toast 提示样式 ===== */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: var(--z-tooltip);
    padding: 1rem 1.5rem;
    background: var(--color-bg-white);
    box-shadow: var(--shadow-xl);
    border-radius: var(--radius-base);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideInRight 0.3s ease;
    pointer-events: auto;
}

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

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

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

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

.toast.show {
    opacity: 1;
    visibility: visible;
}

/* ===== 返回顶部按钮 ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: var(--z-fixed);
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    color: var(--color-text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-5px);
}

/* ===== 导航和头部样式已迁移到Tailwind CSS ===== */
/* 保留的自定义样式用于特殊需求 */

/* ===== 文本截断工具类 ===== */
.line-clamp-1 {
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== 响应式工具类 ===== */
@media (max-width: 640px) {
    html {
        font-size: 14px;
    }
    
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    /* 移动端隐藏侧边工具栏底部项 */
    .side-toolbar-bottom {
        bottom: 70px;
    }
}

@media (min-width: 641px) and (max-width: 768px) {
    html {
        font-size: 15px;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        max-width: 720px;
    }
}

@media (min-width: 1025px) and (max-width: 1280px) {
    .container {
        max-width: 960px;
    }
}

/* ===== 触摸设备优化 ===== */
@media (hover: none) and (pointer: coarse) {
    /* 增加触摸目标大小 */
    button, a {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* 移除悬停效果 */
    .hover\:shadow-hover:hover {
        box-shadow: var(--shadow-base);
    }
    
    .hover\:-translate-y-2:hover {
        transform: translateY(0);
    }
}

/* ===== 横屏模式优化 ===== */
@media (max-height: 500px) and (orientation: landscape) {
    .py-12 {
        padding-top: 2rem;
        padding-bottom: 2rem;
    }
    
    .py-8 {
        padding-top: 1.5rem;
        padding-bottom: 1.5rem;
    }
}

/* ===== 打印样式 ===== */
@media print {
    .no-print {
        display: none !important;
    }
}