/* Shared header and authentication surfaces */
.site-shell__nav .nav-logo {
    display: inline-flex;
    align-items: center;
    min-width: 0;
}

.site-shell__nav .nav-logo img {
    display: block;
    width: auto;
    height: 28px;
}

.site-shell__nav .nav-logo .logo-dark {
    display: none;
}

html.dark-mode .site-shell__nav .nav-logo .logo-light {
    display: none;
}

html.dark-mode .site-shell__nav .nav-logo .logo-dark {
    display: block;
}

.site-shell__nav .search-input {
    border-radius: 8px;
}

.site-shell__nav .nav-icon-button {
    display: inline-grid;
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    place-items: center;
    padding: 0;
    border-radius: 8px;
    line-height: 1;
}

.site-shell__nav .nav-icon-button svg {
    width: 18px;
    height: 18px;
}

.site-shell__nav .nav-checkin-button {
    display: inline-flex;
    min-height: 36px;
    align-items: center;
    gap: 5px;
    padding: 6px 9px;
    border-radius: 8px;
    font-size: 12px;
    line-height: 1;
    white-space: nowrap;
}

.site-shell__nav .nav-checkin-button svg {
    width: 15px;
    height: 15px;
}

.site-shell__nav .nav-checkin-button.is-complete {
    color: var(--success);
    cursor: default;
    opacity: 0.72;
}

.site-shell__nav .sidebar-drawer .drawer-content {
    overflow-y: auto;
}

.site-shell__nav .drawer-auth-button {
    width: 100%;
    border: 0;
    background: transparent;
    color: inherit;
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.site-shell__nav .drawer-auth-button[hidden] {
    display: none !important;
}

.auth-modal {
    background: rgba(2, 6, 23, 0.52);
}

.auth-modal.is-open {
    display: flex;
}

body.auth-modal-open {
    overflow: hidden;
}

.auth-panel {
    position: relative;
    width: min(100%, 420px);
    max-height: min(720px, calc(100dvh - 32px));
    overflow-y: auto;
    padding: 26px 24px 22px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-elevated);
    color: var(--text);
}

.auth-panel .close-button {
    top: 12px;
    right: 12px;
    width: 34px;
    height: 34px;
    min-width: 34px;
    min-height: 34px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-subtle);
    font-size: 20px;
}

.auth-panel .auth-tabs {
    gap: 2px;
    padding: 3px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-subtle);
}

.auth-panel .auth-tab {
    min-height: 36px;
    padding: 7px 10px;
    border: 0;
    border-radius: 6px;
}

.auth-panel .auth-tab.is-active {
    border: 0;
    background: var(--bg-elevated);
    box-shadow: var(--shadow-sm);
    color: var(--brand-strong);
}

.auth-panel .field input,
.auth-panel .field select {
    min-height: 42px;
    border-color: var(--border-strong);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
}

.auth-panel .auth-captcha-row,
.auth-panel .auth-sms-row {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 8px;
}

.auth-panel .auth-captcha-row input,
.auth-panel .auth-sms-row input {
    min-width: 0;
    flex: 1;
}

.auth-panel .auth-captcha-refresh {
    display: block;
    width: 108px;
    height: 42px;
    min-width: 108px;
    min-height: 42px;
    overflow: hidden;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-subtle);
    cursor: pointer;
}

.auth-panel .auth-captcha-refresh img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.auth-panel .auth-sms-row .ghost-button {
    min-height: 42px;
    flex: 0 0 auto;
    padding: 8px 12px;
    white-space: nowrap;
}

.auth-panel .auth-forgot-link {
    margin: -3px 0 0;
    font-size: 12px;
    text-align: right;
}

.auth-panel .auth-forgot-link a,
.auth-panel .agreement-label a {
    color: var(--brand-strong);
    text-decoration: none;
}

.auth-panel .required-mark {
    color: var(--danger);
}

.auth-panel .agreement-field {
    margin: 0;
}

.auth-panel .agreement-label {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.55;
    cursor: pointer;
}

.auth-panel .agreement-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    min-height: 0;
    flex: 0 0 16px;
    margin-top: 1px;
    accent-color: var(--brand-strong);
}

.auth-panel [data-auth-status] {
    min-height: 18px;
    margin: 2px 0 0;
    color: var(--text-secondary);
    font-size: 12px;
    text-align: center;
}

html.dark-mode .auth-panel .auth-tab.is-active,
html.dark-mode .auth-panel .auth-forgot-link a,
html.dark-mode .auth-panel .agreement-label a {
    color: var(--brand);
}

.api-subsection-title {
    margin: 24px 0 12px;
    color: var(--text);
    font-size: 16px;
    font-weight: 600;
}

.api-subsection-copy {
    margin-bottom: 16px;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.api-detail-title {
    margin: 16px 0 8px;
    color: var(--text);
    font-size: 13px;
    font-weight: 600;
}

.api-detail-copy {
    margin: 12px 0;
    color: var(--text-secondary);
    font-size: 13px;
}

.api-docs-footer {
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 13px;
    text-align: center;
}

html.dark-mode .help-page {
    background: var(--bg);
}

html.dark-mode .help-page h1,
html.dark-mode .help-section-title,
html.dark-mode .help-shortcut-title,
html.dark-mode .guide-step-title,
html.dark-mode .faq-question-text,
html.dark-mode .faq-answer-inner strong,
html.dark-mode .contact-card-title {
    color: var(--text);
}

html.dark-mode .help-page .page-desc,
html.dark-mode .help-shortcut-desc,
html.dark-mode .guide-step-desc,
html.dark-mode .faq-answer-inner,
html.dark-mode .contact-card-value {
    color: var(--text-secondary);
}

html.dark-mode .help-search input,
html.dark-mode .help-shortcut,
html.dark-mode .guide-step,
html.dark-mode .faq-item,
html.dark-mode .contact-card {
    border-color: var(--border);
    background: var(--bg-elevated);
    color: var(--text);
}

html.dark-mode .help-search input::placeholder {
    color: var(--text-muted);
}

html.dark-mode .contact-section {
    border-color: var(--border);
    background: var(--bg-subtle);
}

html.dark-mode .api-docs-container {
    background: var(--bg);
}

html.dark-mode .api-sidebar,
html.dark-mode .api-endpoint,
html.dark-mode .api-status-item {
    border-color: var(--border);
    background: var(--bg-elevated);
}

html.dark-mode .api-sidebar-header,
html.dark-mode .api-endpoint-header {
    border-color: var(--border);
}

html.dark-mode .api-endpoint-header,
html.dark-mode .api-params-table th {
    background: var(--bg-subtle);
}

html.dark-mode .api-sidebar-title,
html.dark-mode .api-section-title,
html.dark-mode .api-path,
html.dark-mode .api-params-table th,
html.dark-mode .api-detail-title,
html.dark-mode .api-subsection-title {
    color: var(--text);
}

html.dark-mode .api-nav-item a,
html.dark-mode .api-section-desc,
html.dark-mode .api-endpoint-desc,
html.dark-mode .api-params-table td,
html.dark-mode .api-info-content,
html.dark-mode .api-subsection-copy,
html.dark-mode .api-detail-copy {
    color: var(--text-secondary);
}

html.dark-mode .api-params-table th,
html.dark-mode .api-params-table td {
    border-color: var(--border);
}

html.dark-mode .api-params-table tr:hover td {
    background: var(--bg-subtle);
}

html.dark-mode .api-info-box.info,
html.dark-mode .api-info-box.warning,
html.dark-mode .api-info-box.tip {
    background: var(--bg-subtle);
}

@media (max-width: 768px) {
    .site-shell__nav {
        gap: 8px;
    }

    .site-shell__nav .nav-actions {
        min-width: 0;
        gap: 5px;
    }

    .site-shell__nav .nav-actions > .primary-button,
    .site-shell__nav .nav-checkin-button,
    .site-shell__nav .vip-badge-nav,
    .site-shell__nav .nav-auth-button {
        display: none !important;
    }

    .site-shell__nav .nav-logo img {
        max-width: 112px;
        height: 25px;
        object-fit: contain;
    }

    .auth-panel {
        max-height: calc(100dvh - 20px);
        padding: 22px 16px 18px;
    }
}

@media (max-width: 420px) {
    .site-shell__nav .points-badge {
        display: none !important;
    }

    .auth-panel .auth-captcha-refresh {
        width: 96px;
        min-width: 96px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .auth-panel {
        animation: none;
    }
}

.site-shell__nav .ud-points-copy {
    display: grid;
    gap: 3px;
    min-width: 0;
}

.site-shell__nav .ud-points-copy small {
    color: var(--text-muted);
    font-size: 11px;
    line-height: 1.4;
}