/**
 * 小说阅读系统 - 公共样式文件
 * 统一管理全局样式和CSS变量
 */

/* ============================================
   自定义CSS变量 - 统一主题配置
   ============================================ */
:root {
    /* 主色调 */
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --primary-light: #dbeafe;
    --primary-dark: #1e40af;
    
    /* 功能色 */
    --success-color: #10b981;
    --success-hover: #059669;
    --success-light: #d1fae5;
    --warning-color: #f59e0b;
    --warning-hover: #d97706;
    --warning-light: #fef3c7;
    --error-color: #ef4444;
    --error-hover: #dc2626;
    --error-light: #fee2e2;
    --info-color: #0ea5e9;
    --info-hover: #0284c7;
    --info-light: #e0f2fe;
    
    /* 灰色调 */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* 圆角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    
    /* 过渡动画 */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
    
    /* Z-index层级 */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* 基础样式重置 */
* {
    box-sizing: border-box;
}

/* 字体设置 */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 4px;
}

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

/* 按钮样式 - 转换为普通CSS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border: 1px solid transparent;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 0.375rem;
    transition: color 0.2s, background-color 0.2s, border-color 0.2s;
    cursor: pointer;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.5);
}

.btn-primary {
    background-color: #2563eb;
    color: white;
}

.btn-primary:hover {
    background-color: #1d4ed8;
}

.btn-secondary {
    background-color: #4b5563;
    color: white;
}

.btn-secondary:hover {
    background-color: #374151;
}

.btn-success {
    background-color: #059669;
    color: white;
}

.btn-success:hover {
    background-color: #047857;
}

.btn-warning {
    background-color: #d97706;
    color: white;
}

.btn-warning:hover {
    background-color: #b45309;
}

.btn-danger {
    background-color: #dc2626;
    color: white;
}

.btn-danger:hover {
    background-color: #b91c1c;
}

.btn-outline-primary {
    border-color: #2563eb;
    color: #2563eb;
    background-color: transparent;
}

.btn-outline-primary:hover {
    background-color: #2563eb;
    color: white;
}

.btn-outline-secondary {
    border-color: #4b5563;
    color: #4b5563;
    background-color: transparent;
}

.btn-outline-secondary:hover {
    background-color: #4b5563;
    color: white;
}

.btn-outline-danger {
    border-color: #dc2626;
    color: #dc2626;
    background-color: transparent;
}

.btn-outline-danger:hover {
    background-color: #dc2626;
    color: white;
}

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

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

/* 卡片样式 */
.card {
    background-color: white;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    border: 1px solid var(--gray-200);
}

.card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    background-color: var(--gray-50);
    border-radius: 0.5rem 0.5rem 0 0;
}

.card-body {
    padding: 1rem 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--gray-200);
    background-color: var(--gray-50);
    border-radius: 0 0 0.5rem 0.5rem;
}

/* 表单样式 */
.form-input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: 0.375rem;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    font-size: 0.875rem;
}

.form-input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: 0.375rem;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    resize: vertical;
    font-size: 0.875rem;
}

.form-textarea:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: 0.375rem;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    font-size: 0.875rem;
}

.form-select:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-checkbox {
    width: 1rem;
    height: 1rem;
    color: #2563eb;
    border-color: var(--gray-300);
    border-radius: 0.25rem;
}

.form-checkbox:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-radio {
    width: 1rem;
    height: 1rem;
    color: #2563eb;
    border-color: var(--gray-300);
}

.form-radio:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* 提示消息样式 */
.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    border-left-width: 4px;
}

.alert-success {
    background-color: #d1fae5;
    border-color: #10b981;
    color: #065f46;
}

.alert-warning {
    background-color: #fef3c7;
    border-color: #f59e0b;
    color: #92400e;
}

.alert-error {
    background-color: #fee2e2;
    border-color: #ef4444;
    color: #991b1b;
}

.alert-info {
    background-color: #dbeafe;
    border-color: #3b82f6;
    color: #1e40af;
}

/* 导航样式 */
.nav-item {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--gray-700);
    border-radius: 0.5rem;
    transition: color 0.2s, background-color 0.2s;
    text-decoration: none;
}

.nav-item:hover {
    background-color: var(--gray-100);
}

.nav-item.active {
    background-color: #dbeafe;
    color: #1e40af;
    font-weight: 500;
}

/* 徽章样式 */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-primary {
    background-color: #dbeafe;
    color: #1e3a8a;
}

.badge-success {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

.badge-gray {
    background-color: var(--gray-100);
    color: var(--gray-800);
}

/* 加载动画 */
.loading {
    display: inline-block;
    border-radius: 9999px;
    width: 1rem;
    height: 1rem;
    border: 2px solid currentColor;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

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

/* 渐变文字 */
.gradient-text {
    background: linear-gradient(to right, #2563eb, #9333ea);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 点击波纹效果 */
.ripple {
    position: absolute;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: ripple-animation 0.6s linear;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* 响应式工具类 */
.container-fluid {
    width: 100%;
    padding-left: 1rem;
    padding-right: 1rem;
    margin-left: auto;
    margin-right: auto;
}

@media (min-width: 640px) {
    .container-fluid {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container-fluid {
        padding-left: 2rem;
        padding-right: 2rem;
    }
}

@media (min-width: 1280px) {
    .container-fluid {
        max-width: 80rem;
    }
}

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

/* 无障碍样式 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    white-space: nowrap;
    border-width: 0;
}

/* 焦点样式 */
.focus-visible:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.5);
}

/* 导航栏头像样式 */
.navbar-avatar {
    transition: all 0.3s ease;
    border: 2px solid #3b82f6;
}

.navbar-avatar:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* 购物车红点样式 */
.cart-red-dot {
    position: absolute;
    top: -4px;
    right: -4px;
    background: #dc3545;
    border-radius: 50%;
    width: 8px;
    height: 8px;
    display: block;
}

/* 过渡动画 */
.transition-all {
    transition: all 0.2s ease-in-out;
}

.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

.fade-out {
    animation: fadeOut 0.3s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-10px);
    }
}