/* ========== 识途·路书 全局样式 ========== */

:root {
    --color-dark: #1a1a2e;
    --color-gold: #f0a500;
    --color-white: #ffffff;
    --color-gray-50: #f8f9fa;
    --color-gray-100: #f0f0f0;
    --color-gray-200: #e0e0e0;
    --color-gray-300: #ccc;
    --color-gray-500: #888;
    --color-gray-700: #555;
    --color-gray-900: #333;
    --color-red: #e74c3c;
    --color-green: #27ae60;
    --color-blue: #3498db;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    --transition: all 0.25s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: var(--font-family);
    color: var(--color-gray-900);
    background: var(--color-gray-50);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ========== 导航栏 ========== */
.navbar {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-gray-200);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0 20px;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-dark);
}

.logo-icon svg { display: block; }
.logo-text { letter-spacing: 1px; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--color-gray-700);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link:hover { background: var(--color-gray-100); color: var(--color-dark); }
.nav-link.active { color: var(--color-gold); font-weight: 600; }

.nav-cta {
    background: var(--color-gold);
    color: white !important;
    font-weight: 600;
    margin-left: 8px;
}

.nav-cta:hover { background: #d49200; }

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-menu { display: flex; align-items: center; gap: 4px; }

.dropdown { position: relative; }
.dropdown-toggle { cursor: pointer; background: none; border: none; font-size: 0.9rem; }
.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    padding: 8px 0;
    z-index: 100;
}

.dropdown:hover .dropdown-menu { display: block; }

.dropdown-menu a {
    display: block;
    padding: 10px 16px;
    font-size: 0.9rem;
    color: var(--color-gray-700);
    transition: var(--transition);
}

.dropdown-menu a:hover { background: var(--color-gray-50); color: var(--color-dark); }
.dropdown-menu hr { margin: 6px 0; border: none; border-top: 1px solid var(--color-gray-200); }

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    color: var(--color-gray-700);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid var(--color-gray-200);
    padding: 10px 20px;
    z-index: 999;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.mobile-menu a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-gray-100);
    color: var(--color-gray-700);
}

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-family: var(--font-family);
}

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

.btn-primary:hover { background: #d49200; transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-gray-300);
    color: var(--color-gray-700);
}

.btn-outline:hover { border-color: var(--color-gold); color: var(--color-gold); }

.btn-icon {
    background: transparent;
    border: none;
    color: var(--color-gray-700);
}

.btn-icon:hover { color: var(--color-gold); }

.btn-sm { padding: 6px 14px; font-size: 0.85rem; }
.btn-lg { padding: 14px 28px; font-size: 1.05rem; }
.btn-block { width: 100%; justify-content: center; }
.btn-icon-sm { background: none; border: none; cursor: pointer; color: var(--color-gray-500); padding: 4px; }
.btn-icon-sm:hover { color: var(--color-red); }

/* ========== 表单 ========== */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 0.9rem; font-weight: 500; color: var(--color-gray-700); }

.form-input, .form-select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: var(--font-family);
    transition: var(--transition);
    background: white;
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(240, 165, 0, 0.1);
}

.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }

/* ========== Hero ========== */
.hero {
    position: relative;
    padding: 80px 20px;
    text-align: center;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: white;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content { position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }

.hero-title {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff, #f0a500);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 36px;
}

.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.hero-actions .btn-outline { border-color: rgba(255,255,255,0.3); color: white; }
.hero-actions .btn-outline:hover { border-color: var(--color-gold); }

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 48px;
}

.stat-item { text-align: center; }
.stat-number { display: block; font-size: 1.6rem; font-weight: 700; color: var(--color-gold); }
.stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.5); }

/* ========== Section ========== */
.section { padding: 60px 20px; }
.section-dark { background: var(--color-dark); color: white; }
.section-dark .section-desc { color: rgba(255,255,255,0.6); }

.container { max-width: 1200px; margin: 0 auto; }

.section-header { text-align: center; margin-bottom: 40px; }
.section-title { font-size: 2rem; font-weight: 700; margin-bottom: 8px; }
.section-desc { color: var(--color-gray-500); font-size: 1rem; }

.section-tags { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; margin-top: 16px; }

.tag-badge {
    padding: 6px 14px;
    background: var(--color-gray-100);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--color-gray-700);
    transition: var(--transition);
}

.tag-badge:hover { background: var(--color-gold); color: white; }

.tag-sm {
    display: inline-block;
    padding: 2px 8px;
    background: var(--color-gray-100);
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--color-gray-500);
    margin-right: 4px;
}

.tag-season { background: #e8f5e9; color: #2e7d32; }

.section-more { text-align: center; margin-top: 32px; }

/* ========== 路线卡片 ========== */
.route-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.route-card {
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.route-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.route-card-link { display: block; }

.route-card-cover {
    height: 180px;
    background: linear-gradient(135deg, #e0e0e0, #f5f5f5);
    position: relative;
    overflow: hidden;
}

.route-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.route-card-cover.no-image {
    background: linear-gradient(135deg, #1a1a2e, #0f3460);
}

.cover-placeholder {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: rgba(255,255,255,0.3);
}

.route-card-badge {
    position: absolute;
    bottom: 10px;
    left: 10px;
    display: flex;
    gap: 6px;
}

.route-card-badge span {
    padding: 4px 10px;
    background: rgba(0,0,0,0.6);
    color: white;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.route-card-body { padding: 16px; }

.route-card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-dark);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.route-card-desc {
    font-size: 0.85rem;
    color: var(--color-gray-500);
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.route-card-meta {
    display: flex;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--color-gray-500);
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.route-card-tags { margin-bottom: 8px; }

.route-card-footer {
    display: flex;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--color-gray-500);
    justify-content: space-between;
    align-items: center;
    padding-top: 10px;
    border-top: 1px solid var(--color-gray-100);
}

.card-arrow { color: var(--color-gold); font-size: 0.9rem; }

/* ========== 功能特色 ========== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.feature-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: var(--transition);
}

.feature-card:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 2rem;
    color: var(--color-gold);
    margin-bottom: 16px;
}

.feature-card h3 { margin-bottom: 8px; font-size: 1.1rem; }
.feature-card p { color: rgba(255,255,255,0.6); font-size: 0.9rem; line-height: 1.7; }

/* ========== CTA ========== */
.cta-section {
    background: linear-gradient(135deg, #f0a500, #e09000);
    color: white;
    text-align: center;
}

.cta-section h2 { font-size: 2rem; margin-bottom: 8px; }
.cta-section p { opacity: 0.8; margin-bottom: 24px; }

.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta-actions .btn-outline { border-color: white; color: white; }

/* ========== 页脚 ========== */
.footer {
    background: var(--color-dark);
    color: white;
    padding: 48px 20px 24px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-links h4 { margin-bottom: 16px; color: var(--color-gold); }
.footer-links a {
    display: block;
    padding: 4px 0;
    color: var(--color-gray-500);
    font-size: 0.9rem;
    transition: var(--transition);
}
.footer-links a:hover { color: white; }

.footer-bottom {
    max-width: 1200px;
    margin: 32px auto 0;
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    color: var(--color-gray-500);
    font-size: 0.8rem;
}

/* ========== Flash消息 ========== */
.flash-container {
    position: fixed;
    top: 70px;
    right: 20px;
    z-index: 2000;
    max-width: 400px;
}

.flash-message {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideIn 0.3s ease;
    box-shadow: var(--shadow-md);
}

.flash-success { background: #d4edda; color: #155724; }
.flash-error { background: #f8d7da; color: #721c24; }
.flash-info { background: #d1ecf1; color: #0c5460; }

.flash-close { background: none; border: none; font-size: 1.2rem; cursor: pointer; opacity: 0.5; }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ========== 认证页 ========== */
.auth-page {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.auth-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

.auth-header { text-align: center; margin-bottom: 28px; }
.auth-header h2 { font-size: 1.5rem; margin-bottom: 4px; }
.auth-header p { color: var(--color-gray-500); }

.auth-footer { text-align: center; margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--color-gray-100); }
.auth-footer a { color: var(--color-gold); }

/* ========== 探索页 ========== */
.explore-page { padding: 30px 0; }
.explore-header { text-align: center; margin-bottom: 30px; }
.explore-header h1 { font-size: 2rem; }
.explore-header p { color: var(--color-gray-500); }

.explore-filters { margin-bottom: 30px; }

.filter-search {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
}

.filter-search .form-input { max-width: 400px; }

.filter-label { font-weight: 600; color: var(--color-gray-700); margin-right: 8px; font-size: 0.85rem; }

.filter-tags, .filter-seasons {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.tag-filter {
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    transition: var(--transition);
}

.tag-filter:hover, .tag-filter.active {
    background: var(--color-gold);
    color: white;
}

/* ========== 空状态 ========== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-gray-500);
}

.empty-state i { font-size: 4rem; margin-bottom: 16px; opacity: 0.3; }
.empty-state h3 { margin-bottom: 8px; color: var(--color-gray-700); }

/* ========== 分页 ========== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-top: 40px;
}

.page-info { color: var(--color-gray-500); font-size: 0.9rem; }

/* ========== 错误页 ========== */
.error-page {
    text-align: center;
    padding: 100px 20px;
}

.error-code { font-size: 6rem; font-weight: 800; color: var(--color-gray-200); }
.error-page h2 { margin-bottom: 8px; }
.error-page p { color: var(--color-gray-500); margin-bottom: 24px; }

/* ========== 创建页 ========== */
.create-page { padding: 30px 0; }
.create-header { text-align: center; margin-bottom: 30px; }
.create-header h1 { font-size: 2rem; }

.create-form-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 600px;
    margin: 0 auto;
    box-shadow: var(--shadow-md);
}

.suggested-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }

.tag-selectable {
    padding: 6px 14px;
    background: var(--color-gray-100);
    border-radius: 20px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
}

.tag-selectable:hover { background: var(--color-gray-200); }
.tag-selectable.selected { background: var(--color-gold); color: white; }

.place-suggestions {
    display: none;
    position: absolute;
    background: white;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: 10;
    width: 100%;
    max-height: 240px;
    overflow-y: auto;
}

.suggestion-item {
    padding: 10px 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.suggestion-item:hover { background: var(--color-gray-50); }
.suggestion-item i { color: var(--color-gold); }
.suggestion-item small { color: var(--color-gray-500); margin-left: auto; }

.create-from-template { max-width: 600px; margin: 32px auto; text-align: center; }
.create-from-template h3 { margin-bottom: 16px; color: var(--color-gray-700); }

/* ========== 模态框 ========== */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 3000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-lg { max-width: 700px; }

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-gray-100);
}

.modal-header h3 { font-size: 1.1rem; }

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-gray-500);
}

.modal-body { padding: 20px; }

/* ========== Toast ========== */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-dark);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    z-index: 4000;
    animation: fadeInUp 0.3s ease;
    box-shadow: var(--shadow-lg);
}

@keyframes fadeInUp {
    from { transform: translateX(-50%) translateY(20px); opacity: 0; }
    to { transform: translateX(-50%) translateY(0); opacity: 1; }
}

/* ========== 文本 ========== */
.text-center { text-align: center; }
.text-muted { color: var(--color-gray-500); }

/* ========== 个人中心 ========== */
.profile-page {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 30px;
}

.profile-sidebar {
    background: white;
    border-radius: var(--radius-md);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.avatar-placeholder {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-gold), var(--color-dark));
    color: white;
    font-size: 2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.profile-nav { margin-top: 24px; text-align: left; }
.profile-nav a {
    display: block;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    color: var(--color-gray-700);
    font-size: 0.9rem;
    transition: var(--transition);
}

.profile-nav a:hover, .profile-nav a.active {
    background: var(--color-gray-50);
    color: var(--color-gold);
    font-weight: 600;
}

.profile-content { background: white; border-radius: var(--radius-md); padding: 30px; box-shadow: var(--shadow-sm); }
.profile-section { margin-bottom: 32px; padding-bottom: 32px; border-bottom: 1px solid var(--color-gray-100); }
.profile-section:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.profile-section h3 { margin-bottom: 16px; }

/* ========== 页面头部 ========== */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.page-header h1 { font-size: 1.8rem; }

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .nav-links, .nav-actions .nav-link { display: none; }
    .nav-actions .btn { display: inline-flex; }
    .mobile-menu-btn { display: block; }
    .mobile-menu.show { display: block; }

    .hero { padding: 50px 20px; }
    .hero-title { font-size: 1.8rem; }
    .hero-stats { gap: 24px; }

    .route-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
    .features-grid { grid-template-columns: 1fr; }

    .footer-container { grid-template-columns: 1fr 1fr; }

    .form-row { flex-direction: column; gap: 0; }

    .profile-page { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 1.5rem; }
    .hero-actions { flex-direction: column; }
    .section-title { font-size: 1.5rem; }
    .route-grid { grid-template-columns: 1fr; }
    .footer-container { grid-template-columns: 1fr; }
}