/* Liquid Glass design layer — tiered surfaces, specular edges, mobile fallbacks */

:root {
    --glass-surface-1: rgba(25, 27, 34, 0.55);
    --glass-surface-2: rgba(25, 27, 34, 0.65);
    --glass-surface-3: rgba(30, 32, 42, 0.72);
    --glass-surface-4: rgba(35, 38, 50, 0.82);
    --glass-blur-chrome: saturate(200%) blur(32px);
    --glass-blur-card: saturate(180%) blur(20px);
    --glass-blur-modal: saturate(190%) blur(28px);
    --glass-specular: inset 0 1px 0 rgba(255, 255, 255, 0.12);
    --glass-specular-soft: inset 0 1px 0 rgba(255, 255, 255, 0.06);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.24);
    --glass-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.32);
    --radius-glass-sm: 12px;
    --radius-glass-md: 16px;
    --radius-glass-lg: 20px;
    --mobile-chrome-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
    --lg-motion: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Legacy aliases */
:root {
    --glass-bg: var(--glass-surface-2);
    --glass-border: rgba(255, 255, 255, 0.09);
}

/* Ambient noise grain */
.lg-noise-overlay {
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
    opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 180px 180px;
}

.light-theme .lg-noise-overlay {
    opacity: 0.025;
}

/* Shared glass surface primitive */
.lg-surface {
    background: var(--glass-surface-2);
    backdrop-filter: var(--glass-blur-card);
    -webkit-backdrop-filter: var(--glass-blur-card);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-specular), var(--glass-shadow);
}

.lg-surface-chrome {
    background: var(--glass-surface-1);
    backdrop-filter: var(--glass-blur-chrome);
    -webkit-backdrop-filter: var(--glass-blur-chrome);
    border-color: var(--glass-border);
    box-shadow: var(--glass-specular-soft), 0 1px 20px rgba(0, 0, 0, 0.2);
}

.lg-surface-modal {
    background: var(--glass-surface-3);
    backdrop-filter: var(--glass-blur-modal);
    -webkit-backdrop-filter: var(--glass-blur-modal);
    border-radius: var(--radius-glass-md);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-specular), var(--glass-shadow-lg);
}

.lg-surface-float {
    background: var(--glass-surface-4);
    backdrop-filter: var(--glass-blur-card);
    -webkit-backdrop-filter: var(--glass-blur-card);
    border-radius: var(--radius-glass-sm);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-specular), var(--glass-shadow);
}

@supports not (backdrop-filter: blur(1px)) {
    .lg-surface,
    .lg-surface-chrome,
    .lg-surface-modal,
    .lg-surface-float,
    .top-header-bar,
    .mobile-nav-panel,
    .command-search-box,
    .dashboard-card,
    .dash-continue-strip,
    .modal-content {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background: var(--bg-secondary);
    }
}

@media (prefers-reduced-motion: reduce) {
    .lg-surface,
    .lg-surface-chrome,
    .lg-surface-modal,
    .lg-surface-float,
    .dashboard-card,
    .ai-fab,
    .dash-continue-strip {
        transition: none !important;
    }
}

@media (max-width: 768px) {
    :root {
        --glass-blur-chrome: saturate(160%) blur(16px);
        --glass-blur-card: saturate(150%) blur(14px);
        --glass-blur-modal: saturate(160%) blur(16px);
        --glass-surface-1: rgba(25, 27, 34, 0.72);
        --glass-surface-2: rgba(25, 27, 34, 0.78);
        --glass-surface-3: rgba(30, 32, 42, 0.85);
    }
}

/* Apply to high-traffic chrome */
.top-header-bar {
    background: var(--glass-surface-1);
    backdrop-filter: var(--glass-blur-chrome);
    -webkit-backdrop-filter: var(--glass-blur-chrome);
    box-shadow: var(--glass-specular-soft), 0 1px 20px var(--shadow-color);
}

.topnav-dropdown {
    background: var(--glass-surface-3);
    backdrop-filter: var(--glass-blur-modal);
    -webkit-backdrop-filter: var(--glass-blur-modal);
    border-radius: var(--radius-glass-sm);
    box-shadow: var(--glass-specular), var(--glass-shadow-lg);
}

.mobile-nav-panel {
    background: var(--glass-surface-3);
    backdrop-filter: var(--glass-blur-chrome);
    -webkit-backdrop-filter: var(--glass-blur-chrome);
    box-shadow: var(--glass-specular-soft), 4px 0 32px rgba(0, 0, 0, 0.45);
}

.command-search-box {
    background: var(--glass-surface-3);
    backdrop-filter: var(--glass-blur-modal);
    -webkit-backdrop-filter: var(--glass-blur-modal);
    border-radius: var(--radius-glass-md);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-specular), var(--glass-shadow-lg);
}

.dashboard-card,
.dash-continue-strip {
    background: var(--glass-surface-2);
    backdrop-filter: var(--glass-blur-card);
    -webkit-backdrop-filter: var(--glass-blur-card);
    border-radius: var(--radius-glass-sm);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-specular-soft), var(--glass-shadow);
    transition: transform 0.2s var(--lg-motion), box-shadow 0.2s ease, border-color 0.2s ease;
}

.dashboard-card:hover {
    transform: translateY(-2px);
    border-color: var(--card-hover-border);
    box-shadow: var(--glass-specular), var(--card-hover-shadow);
}

.dashboard-hero {
    border-radius: var(--radius-glass-md);
}

.modal-content {
    border-radius: var(--radius-glass-md);
    box-shadow: var(--glass-specular), var(--glass-shadow-lg);
}

.modal-backdrop.active .modal-content {
    background: var(--glass-surface-3);
    backdrop-filter: var(--glass-blur-modal);
    -webkit-backdrop-filter: var(--glass-blur-modal);
}

.ai-fab {
    border-radius: var(--radius-glass-sm);
    box-shadow: var(--glass-specular-soft), 0 4px 20px rgba(0, 0, 0, 0.35);
}

/* Dashboard continue strip */
.dash-continue-strip {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    margin-bottom: 16px;
    cursor: pointer;
}

.dash-continue-strip:hover {
    transform: translateY(-1px);
    border-color: var(--hover-border);
}

.dash-continue-main {
    flex: 1;
    min-width: 0;
}

.dash-continue-label {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent-blue);
    margin-bottom: 4px;
}

.dash-continue-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.dash-continue-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.dash-continue-action {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--nav-active-bg);
    border: 1px solid var(--hover-border);
    color: var(--accent-blue);
    font-size: 0.75rem;
    font-weight: 500;
}

.dash-overdue-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.dash-overdue-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
    background: rgba(248, 113, 113, 0.12);
    border: 1px solid rgba(248, 113, 113, 0.25);
    color: #f87171;
    cursor: pointer;
}

.dash-readiness-spark {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
}

.dash-sparkline {
    flex-shrink: 0;
}

.dash-spark-delta {
    font-size: 0.75rem;
    font-weight: 600;
}

.dash-spark-delta.up { color: var(--status-met); }
.dash-spark-delta.down { color: var(--status-not-met); }
.dash-spark-delta.flat { color: var(--text-muted); }

.poam-date-overdue {
    color: #f87171;
    font-weight: 600;
}

.poam-date-soon {
    color: #fbbf24;
    font-weight: 500;
}

/* Mobile nav accordion */
.mobile-nav-links {
    padding: 8px 8px 24px;
    border-top: 1px solid var(--glass-border);
}

.mobile-nav-section {
    margin-bottom: 4px;
}

.mobile-nav-section-title {
    padding: 10px 12px;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.mobile-nav-section-title::-webkit-details-marker {
    display: none;
}

.mobile-nav-section[open] .mobile-nav-section-title {
    color: var(--accent-blue);
}

.mobile-nav-section-links {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 0 4px 8px;
}

.mobile-nav-section-links .hamburger-nav-btn {
    min-height: 44px;
}

/* Assessment sticky actions (mobile, assessment view only) */
.assessment-sticky-actions {
    display: none;
}

.assessment-sticky-btn {
    flex: 1;
    min-height: 44px;
    padding: 8px 12px;
    border-radius: 10px;
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.assessment-sticky-btn.is-selected-met {
    background: rgba(52, 211, 153, 0.15);
    border-color: rgba(52, 211, 153, 0.45);
    color: var(--status-met);
}

.assessment-sticky-btn.is-selected-partial {
    background: rgba(251, 191, 36, 0.15);
    border-color: rgba(251, 191, 36, 0.45);
    color: var(--status-partial);
}

.assessment-sticky-btn.is-selected-not-met {
    background: rgba(248, 113, 113, 0.15);
    border-color: rgba(248, 113, 113, 0.45);
    color: var(--status-not-met);
}

@media (max-width: 768px) {
    #assessment-view.active .assessment-sticky-actions {
        display: flex;
        position: fixed;
        left: 0;
        right: 0;
        bottom: var(--mobile-chrome-bottom);
        z-index: 850;
        gap: 8px;
        padding: 10px 12px calc(10px + env(safe-area-inset-bottom, 0px));
        background: var(--glass-surface-3);
        backdrop-filter: var(--glass-blur-chrome);
        -webkit-backdrop-filter: var(--glass-blur-chrome);
        border-top: 1px solid var(--glass-border);
        box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.25);
    }

    .main-content:has(#assessment-view.active) {
        padding-bottom: calc(var(--mobile-chrome-bottom) + 64px);
    }

    body:has(#assessment-view.active) .ai-fab {
        bottom: calc(var(--mobile-chrome-bottom) + 72px);
    }

    body:has(#assessment-view.active) .api-tester-fab {
        bottom: calc(var(--mobile-chrome-bottom) + 120px);
    }

    .dash-continue-strip {
        flex-direction: column;
        align-items: stretch;
    }

    .dash-continue-action {
        justify-content: center;
    }
}

.light-theme {
    --glass-surface-1: rgba(255, 255, 255, 0.72);
    --glass-surface-2: rgba(255, 255, 255, 0.82);
    --glass-surface-3: rgba(255, 255, 255, 0.88);
    --glass-surface-4: rgba(255, 255, 255, 0.92);
    --glass-border: rgba(87, 70, 184, 0.12);
}

.light-theme .mobile-nav-panel {
    background: rgba(255, 255, 255, 0.92);
}

.light-theme .dash-overdue-pill {
    background: rgba(220, 38, 38, 0.08);
    border-color: rgba(220, 38, 38, 0.2);
    color: #b91c1c;
}