/* ========== 通用样式 - main.css ========== */
/* CSS变量定义 */
:root {
    /* 主色调 - 清新蓝，稳重且不失活力 */
    --primary-color: #3B82F6; /* 现代蓝 */
    --primary-dark: #2563EB; /*以此作为悬停和强调，加深层次 */
    --primary-light: #EFF6FF; /* 极淡蓝背景，营造清爽感 */
    --secondary-color: #F0F9FF; /* 淡蓝白 */
    --accent-color: #5e676a; /* 青色，用于关键点缀，增加清新感 */
    --success-color: #10B981; /* 翠绿，视觉更舒适 */
    --warning-color: #F59E0B;
    --danger-color: #EF4444;
    /* 中性色 */
    --dark-color: #1e293b; /* 深蓝灰，比纯黑更柔和 */
    --light-color: #ffffff;
    --gray-color: #64748b; /* 蓝灰色，与主色调更协调 */
    --gray-light: #e2e8f0;
    /* 阴影 - 柔化阴影，增加轻盈感 */
    --shadow-sm: 0 1px 2px 0 rgba(59, 130, 246, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(59, 130, 246, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(59, 130, 246, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(59, 130, 246, 0.1);
    /* 圆角 */
    --radius-sm: 0.5rem; /* 稍微增大圆角，更显亲和 */
    --radius-md: 0.75rem;
    --radius-lg: 1.25rem;
    --radius-xl: 2rem;
    /* 过渡 */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 11.2px; /* 全局缩放：70% (16px × 0.7) */
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont,
    'Segoe UI', 'PingFang SC', 'Hiragino Sans GB',
    'Microsoft YaHei', 'Helvetica Neue', Helvetica,
    Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #F8FAFC; /* 极淡的灰蓝色背景，护眼 */
    overflow-x: hidden;
}

/* 通用容器 */
.main-container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
/* 通用按钮样式 */
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    outline: none;
}

.main-btn-primary {
    /* 蓝色到青色的清新渐变 */
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.3);
}

.main-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.4);
    background: linear-gradient(135deg, var(--primary-dark), #0891b2);
}

.main-btn-secondary {
    background-color: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.main-btn-secondary:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
}

.main-btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.main-btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}
/* ========== 页面加载器 ========== */
.main-page-loader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s ease;
}

.main-loader-content {
    text-align: center;
}

.main-loader-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--primary-light);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: main-spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* ========== 表单错误样式 ========== */
.main-error-message {
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.main-input-error {
    border-color: var(--danger-color) !important;
}

.main-input-error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1) !important;
}

/* ========== 通知样式 ========== */
.main-notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: white;
    border-radius: var(--radius-md);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    z-index: 1000;
    transform: translateY(100px);
    opacity: 0;
    transition: all var(--transition-normal);
}

.main-notification.show {
    transform: translateY(0);
    opacity: 1;
}

.main-notification-success {
    border-left: 4px solid #10b981;
}

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

.main-notification-info {
    border-left: 4px solid #3b82f6;
}

.main-notification i {
    font-size: 1.25rem;
}

.main-notification-success i {
    color: #10b981;
}

.main-notification-error i {
    color: #ef4444;
}

.main-notification-info i {
    color: #3b82f6;
}

/* ========== 加载状态 ========== */
.main-loading {
    position: relative;
}

.main-loading::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.9), transparent);
    animation: main-shimmer 1.5s infinite;
    z-index: 1;
}

@keyframes main-shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* ========== 空状态 ========== */
.main-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1rem;
    text-align: center;
    color: var(--gray-color);
}

.main-empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #d1d5db;
}

.main-empty-state p {
    margin-bottom: 1.5rem;
}
/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
    .main-container {
        padding: 0 1rem;
    }
}