/* ===== 飞鸽177 工具导航站 - Styles ===== */
:root {
    --bg: #f0f2f5;
    --bg-card: #ffffff;
    --bg-card-hover: #f8f9fa;
    --bg-input: #ffffff;
    --text: #1a1a2e;
    --text-secondary: #6b7280;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --accent: #7c3aed;
    --success: #059669;
    --warning: #d97706;
    --danger: #dc2626;
    --border: #e5e7eb;
    --radius: 12px;
    --radius-sm: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.6;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== Header ===== */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.4rem;
    font-weight: 700;
}
.logo-icon { font-size: 1.6rem; }
.logo-text { color: var(--text); }
.logo-highlight { color: var(--primary); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav-links a, .user-badge {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: all 0.2s;
}
.nav-links a:hover, .nav-links a.active {
    color: var(--primary);
    background: #eff6ff;
}
.user-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    cursor: default;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ===== Tier Badge ===== */
.tier-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}
.tier-free { background: #f3f4f6; color: #6b7280; }
.tier-basic { background: #dbeafe; color: #2563eb; }
.tier-standard { background: #dbeafe; color: #2563eb; }
.tier-pro, .tier-premium { background: #fef3c7; color: #d97706; }
.tier-vip { background: #ede9fe; color: #7c3aed; }

/* ===== Hero ===== */
.hero {
    text-align: center;
    padding: 4rem 0 3rem;
}
.hero h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.8rem;
}
.hero p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.search-box {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
    gap: 0;
}
.search-box input {
    flex: 1;
    padding: 14px 20px;
    border: 2px solid var(--border);
    border-radius: var(--radius) 0 0 var(--radius);
    background: var(--bg-input);
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}
.search-box input:focus { border-color: var(--primary); }
.search-box button {
    padding: 14px 24px;
    border: none;
    border-radius: 0 var(--radius) var(--radius) 0;
    background: var(--primary);
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
}
.search-box button:hover { background: var(--primary-hover); }

.ai-tag {
    display: inline-block;
    margin-top: 8px;
    padding: 4px 12px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    font-size: 0.8rem;
    color: white;
}

/* ===== Categories ===== */
.categories-bar {
    display: flex;
    gap: 8px;
    padding: 1rem 0;
    overflow-x: auto;
    flex-wrap: wrap;
}
.cat-btn {
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
    white-space: nowrap;
}
.cat-btn:hover, .cat-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ===== Items Grid ===== */
.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
    padding: 1rem 0;
    min-height: 200px;
}

.nav-card {
    display: flex;
    gap: 14px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: inherit;
    transition: all 0.2s;
}
.nav-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.12);
}

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: #f3f4f6;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}
.card-icon img { width: 32px; height: 32px; border-radius: 4px; }

.card-content { flex: 1; min-width: 0; }
.card-content h3 {
    font-size: 1rem;
    margin-bottom: 4px;
}
.card-content p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}
.card-category {
    padding: 2px 8px;
    background: #f3f4f6;
    border-radius: 20px;
}
.card-clicks { color: var(--text-secondary); }

.loading, .empty-state, .error-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}
.error-state { color: var(--danger); }

/* ===== Pagination ===== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    padding: 2rem 0;
}
.pagination button {
    padding: 10px 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s;
}
.pagination button:hover:not(:disabled) {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}
.pagination button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
#page-info { font-size: 0.9rem; color: var(--text-secondary); }

/* ===== Recommendations ===== */
.recommendations {
    padding: 2rem 0 4rem;
}
.section-title {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}
.rec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 12px;
}
.rec-card {
    background: linear-gradient(135deg, var(--bg-card), #f3f4f6);
}

/* ===== Auth Page ===== */
.auth-page {
    display: flex;
    justify-content: center;
    padding: 3rem 20px 6rem;
}
.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    width: 100%;
    max-width: 420px;
}
.auth-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border);
}
.auth-tab {
    flex: 1;
    padding: 12px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
}
.auth-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.auth-form h2 { margin-bottom: 4px; }
.auth-subtitle {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.form-group { margin-bottom: 1rem; }
.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.form-group input, .form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}
.form-group input:focus { border-color: var(--primary); }

.btn-primary {
    width: 100%;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--primary);
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
    font-weight: 600;
}
.btn-primary:hover { background: var(--primary-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-secondary {
    width: 100%;
    padding: 10px 20px;
    margin-top: 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}
.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.auth-error {
    color: var(--danger);
    font-size: 0.85rem;
    margin-top: 12px;
    text-align: center;
}
.auth-note {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-top: 1rem;
    text-align: center;
}

/* ===== Member Page ===== */
.member-page { padding: 2rem 0 4rem; }

.profile-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 2rem;
}
.profile-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: #f3f4f6;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}
.profile-info { flex: 1; }
.profile-info h2 { font-size: 1.3rem; margin-bottom: 2px; }
.profile-email, .profile-joined {
    color: var(--text-secondary);
    font-size: 0.85rem;
}
.profile-tier {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    background: #f3f4f6;
}
.tier-label { font-size: 0.75rem; color: var(--text-secondary); }
.tier-name { font-size: 1.2rem; font-weight: 700; }
.tier-free .tier-name { color: #6b7280; }
.tier-basic .tier-name, .tier-standard .tier-name { color: var(--primary); }
.tier-premium .tier-name, .tier-pro .tier-name { color: #d97706; }
.tier-vip .tier-name { color: var(--accent); }

.member-section { margin-bottom: 2rem; }
.member-section h2 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}
.subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.member-stats {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
}
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
}
.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
}
.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ===== Pricing Cards ===== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 2rem;
}
.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    transition: all 0.2s;
    position: relative;
}
.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.15);
}
.pricing-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}
.pricing-card .plan-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}
.pricing-card .plan-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}
.pricing-card .plan-period {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}
.pricing-card .plan-features {
    list-style: none;
    text-align: left;
    margin-bottom: 1.5rem;
}
.pricing-card .plan-features li {
    padding: 6px 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.pricing-card .plan-features li::before {
    content: '✅ ';
}
.pricing-card .plan-features li.na::before {
    content: '❌ ';
}

.featured-tag {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* ===== Billing toggle ===== */
.billing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 2rem;
}
.billing-toggle span {
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.billing-toggle span.active {
    color: var(--text);
    font-weight: 600;
}
.toggle-switch {
    width: 48px;
    height: 26px;
    background: var(--border);
    border-radius: 13px;
    cursor: pointer;
    position: relative;
    transition: background 0.2s;
}
.toggle-switch.active {
    background: var(--primary);
}
.toggle-switch::after {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: transform 0.2s;
}
.toggle-switch.active::after {
    transform: translateX(22px);
}
.discount-badge {
    background: #dbeafe;
    color: var(--primary);
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* ===== Footer ===== */
footer {
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    margin-top: 3rem;
}
.footer-inner {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}
.footer-links {
    margin-top: 8px;
    display: flex;
    gap: 16px;
    justify-content: center;
}
.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
}
.footer-links a:hover { color: var(--primary); }

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .mobile-menu-btn { display: block; }
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(255,255,255,0.98);
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }
    .nav-links.show { display: flex; }
    .hero h1 { font-size: 1.8rem; }
    .items-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .profile-card { flex-direction: column; text-align: center; }
}