/**
 * 全站统一导航栏 & 页脚 — 简洁横条风格
 */
@import url('tokens.css');

*, *::before, *::after { box-sizing: border-box; }

/* ========== 顶栏 ========== */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 200;
    height: var(--nav-h);
    background: #fff;
    border-bottom: 1px solid #eef0f3;
}

.site-nav-inner {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 24px;
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    text-decoration: none;
    color: inherit;
}

.site-logo-icon {
    width: 36px;
    height: 36px;
    object-fit: contain;
    flex-shrink: 0;
}

.site-logo-text {
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.01em;
    white-space: nowrap;
    background: linear-gradient(120deg, #0d9488 0%, #14b8a6 35%, #0891b2 65%, #2563eb 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 24px rgba(20, 184, 166, 0.18);
    filter: drop-shadow(0 1px 0 rgba(255, 255, 255, 0.85));
}

.site-logo:hover .site-logo-text {
    background: linear-gradient(120deg, #0f766e 0%, #0d9488 40%, #0284c7 70%, #1d4ed8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* 主导航 */
.site-nav-menu {
    flex: 1 1 auto;
    min-width: 0;
}

.site-nav-links {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
    flex-wrap: nowrap;
}

.site-nav-links > li {
    position: relative;
    list-style: none;
}

.site-nav-links > li > a,
.nav-dropdown-trigger {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 18px 14px;
    font-size: 15px;
    font-weight: 600;
    color: #1d2129;
    text-decoration: none;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color 0.18s, border-color 0.18s;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    cursor: pointer;
    font-family: inherit;
    line-height: 1;
}

.site-nav-links > li > a:hover,
.nav-dropdown-trigger:hover {
    color: var(--brand-dark);
}

.site-nav-links > li > a.active,
.nav-dropdown-trigger.active {
    color: var(--brand-dark);
    font-weight: 700;
    border-bottom-color: var(--brand);
}

.nav-caret {
    font-size: 10px;
    opacity: 0.55;
    margin-left: 2px;
    transition: transform 0.2s;
}

.nav-dropdown-panel--narrow {
    min-width: 240px;
}

.nav-has-dropdown.is-open .nav-caret {
    transform: rotate(180deg);
}

/* 下拉面板 — padding-top 作为悬停桥梁，避免移入菜单时消失 */
.nav-dropdown-panel {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 420px;
    padding-top: 6px;
    background: transparent;
    border: none;
    box-shadow: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(4px);
    transition: opacity 0.18s, transform 0.18s, visibility 0.18s;
    pointer-events: none;
    z-index: 300;
}

.nav-dropdown-body {
    padding: 16px 18px 12px;
    background: #fff;
    border: 1px solid #e5e6eb;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(29, 33, 41, 0.12);
}

.nav-has-dropdown.is-open .nav-dropdown-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.nav-dropdown-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 20px 28px;
}

.nav-dropdown-label {
    margin: 0 0 8px;
    font-size: 12px;
    font-weight: 600;
    color: #86909c;
    letter-spacing: 0.04em;
}

.nav-dropdown-col {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-dropdown-col a {
    display: block;
    padding: 7px 10px;
    font-size: 13px;
    font-weight: 500;
    color: #4e5969;
    text-decoration: none;
    border-radius: 6px;
    transition: color 0.15s, background 0.15s;
}

.nav-dropdown-col a:hover {
    color: var(--brand-dark);
    background: rgba(20, 184, 166, 0.08);
}

.nav-dropdown-footer {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid #f2f3f5;
    font-size: 13px;
    font-weight: 600;
    color: var(--brand-dark);
    text-decoration: none;
}

.nav-dropdown-footer:hover {
    color: var(--brand);
}

/* 右侧用户区 */
.site-nav-actions {
    display: flex;
    align-items: center;
    flex: 0 0 auto;
    flex-shrink: 0;
    margin-left: auto;
    position: relative;
    z-index: 3;
    background: #fff;
    padding-left: 12px;
}

.site-nav-actions [data-user-nav] {
    min-width: 0;
}

.site-nav-login,
.site-nav-center {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 72px;
    height: 34px;
    padding: 0 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.site-nav-login {
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text) !important;
}

.site-nav-login:hover {
    background: var(--brand-bg);
    border-color: var(--brand);
    color: var(--brand-dark) !important;
}

.site-nav-center {
    border: 1px solid #e5e6eb;
    background: #fff;
    color: #1d2129 !important;
    cursor: pointer;
    font-family: inherit;
    gap: 4px;
}

.site-nav-center:hover,
.site-nav-user .user-nav-dropdown:hover .site-nav-center,
.site-nav-user .user-nav-dropdown.is-open .site-nav-center {
    border-color: var(--brand);
    color: var(--brand-dark) !important;
    background: rgba(20, 184, 166, 0.06);
}

.site-nav-user .user-nav-trigger .bi-chevron-down {
    font-size: 10px;
    opacity: 0.55;
    transition: transform 0.2s;
}

.site-nav-user .user-nav-coins {
    height: 34px;
    padding: 0 12px;
    font-size: 13px;
    border: 1px solid rgba(249, 115, 22, 0.22);
    background: linear-gradient(180deg, #fff7ed, #ffedd5);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.site-nav-user .user-nav-coins:hover {
    border-color: rgba(249, 115, 22, 0.45);
    box-shadow: 0 2px 8px rgba(249, 115, 22, 0.12);
    color: #9a3412;
}

.site-nav-user .user-nav-coins .bi-coin {
    font-size: 15px;
    color: #ea580c;
}

.site-nav-user .user-nav-vip {
    height: 34px;
    padding: 0 12px;
    font-size: 13px;
    border: 1px solid rgba(217, 119, 6, 0.35);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.65);
}

.site-nav-user .user-nav-vip .bi-crown-fill {
    font-size: 14px;
    color: #d97706;
}

.site-nav-user .user-nav-member-cta {
    height: 34px;
    padding: 0 12px;
    font-size: 13px;
    border: 1px solid rgba(13, 148, 136, 0.25);
}

.site-nav-user .user-nav-widget {
    gap: 6px;
    flex-wrap: nowrap;
}

.site-nav-user .user-nav-coins-num {
    max-width: 4.5em;
    overflow: hidden;
    text-overflow: ellipsis;
}

.site-nav-user .user-nav-dropdown:hover .user-nav-trigger .bi-chevron-down,
.site-nav-user .user-nav-dropdown.is-open .user-nav-trigger .bi-chevron-down {
    transform: rotate(180deg);
}

/* 移动端菜单按钮 */
.site-nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    margin-left: auto;
    padding: 0;
    border: 1px solid #e5e6eb;
    border-radius: 8px;
    background: #fff;
    color: #4e5969;
    font-size: 1.25rem;
    cursor: pointer;
}

@media (max-width: 1280px) {
    .site-nav-inner {
        gap: 16px;
        padding: 0 16px;
    }

    .site-logo-text {
        font-size: 16px;
    }

    .site-nav-links > li > a,
    .nav-dropdown-trigger {
        padding: 18px 10px;
        font-size: 14px;
    }
}

@media (max-width: 1140px) {
    .site-nav-inner {
        gap: 12px;
        padding: 0 16px;
    }

    .site-nav-toggle {
        display: inline-flex;
        margin-left: 8px;
    }

    .site-nav-actions {
        margin-left: auto;
        padding-left: 8px;
    }

    .site-nav-menu {
        position: absolute;
        top: var(--nav-h);
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid #eef0f3;
        box-shadow: 0 8px 20px rgba(29, 33, 41, 0.08);
        display: none;
        padding: 8px 16px 16px;
        z-index: 250;
    }

    .site-nav.is-mobile-open .site-nav-menu {
        display: block;
    }

    .site-nav-links {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .site-nav-links > li > a,
    .nav-dropdown-trigger {
        padding: 14px 8px;
        border-bottom: none;
        width: 100%;
    }

    .site-nav-links > li > a.active,
    .nav-dropdown-trigger.active {
        border-bottom: none;
        background: rgba(20, 184, 166, 0.08);
        border-radius: 6px;
    }

    .nav-dropdown-panel {
        position: static;
        min-width: 0;
        box-shadow: none;
        border: none;
        padding: 0 0 8px 12px;
        opacity: 1;
        visibility: visible;
        transform: none;
        pointer-events: auto;
        display: none;
    }

    .nav-has-dropdown.is-open .nav-dropdown-panel {
        display: block;
    }

    .nav-dropdown-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}

@media (max-width: 960px) {
    .site-nav-inner {
        gap: 12px;
        padding: 0 16px;
    }
}

@media (max-width: 520px) {
    .site-logo-text {
        font-size: 16px;
    }
}

/* ========== 页脚 ========== */
.site-footer {
    margin-top: 48px;
    background: #f8fafc;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: var(--leading);
    border-top: 1px solid var(--border);
}

.site-footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 36px 22px 24px;
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 32px;
}

.site-footer-brand strong {
    display: block;
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text);
    margin-bottom: 10px;
}

.site-footer-brand p {
    font-size: var(--text-sm);
    color: var(--text-muted);
    max-width: 320px;
}

.site-footer-col h4 {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--text);
    margin-bottom: 14px;
    letter-spacing: 0;
}

.site-footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.site-footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--text-sm);
    transition: color 0.15s;
}

.site-footer-links a:hover {
    color: var(--brand-dark);
}

.site-footer-bottom {
    border-top: 1px solid var(--border);
    padding: 16px 22px;
    text-align: center;
    font-size: var(--text-xs);
    color: var(--text-muted);
    background: #fff;
}

.site-footer-bottom a {
    color: var(--text-secondary);
    text-decoration: none;
}

.site-footer-bottom a:hover {
    color: var(--brand-dark);
}

.site-footer-beian {
    color: #2563eb !important;
    text-decoration: underline !important;
    text-underline-offset: 2px;
}

.site-footer-beian:hover {
    color: #1d4ed8 !important;
}

.site-footer-bottom p + p {
    margin-top: 6px;
}

.site-footer-support {
    color: var(--text-secondary);
}

.site-footer-support a {
    color: var(--brand-dark);
    font-weight: 600;
    text-decoration: none;
}

.site-footer-support a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .site-footer-inner {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 32px 16px 20px;
    }
}