/* Reusable Component Styles */

/* ===== Badge ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--space-sm);
    font-size: var(--text-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
    background: var(--color-surface-2);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.badge--accent {
    background: var(--color-accent-cyan-muted);
    color: var(--color-accent-cyan);
    border-color: rgba(0, 235, 255, 0.3);
}

.badge--success {
    background: rgba(0, 200, 83, 0.15);
    color: var(--color-success);
    border-color: rgba(0, 200, 83, 0.3);
}

.badge--warning {
    background: rgba(255, 214, 0, 0.15);
    color: var(--color-warning);
    border-color: rgba(255, 214, 0, 0.3);
}

.badge--error {
    background: rgba(255, 23, 68, 0.15);
    color: var(--color-error);
    border-color: rgba(255, 23, 68, 0.3);
}

/* ===== Alert ===== */
.alert {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-surface-1);
    margin-bottom: var(--space-md);
}

.alert--info {
    border-color: rgba(0, 235, 255, 0.3);
    background: var(--color-accent-cyan-muted);
}

.alert--success {
    border-color: rgba(0, 200, 83, 0.3);
    background: rgba(0, 200, 83, 0.1);
}

.alert--warning {
    border-color: rgba(255, 214, 0, 0.3);
    background: rgba(255, 214, 0, 0.1);
}

.alert--error {
    border-color: rgba(255, 23, 68, 0.3);
    background: rgba(255, 23, 68, 0.1);
}

/* ===== Table ===== */
.table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.table th {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    background: var(--color-surface-1);
    white-space: nowrap;
}

.table td {
    font-size: var(--text-sm);
    color: var(--color-text-primary);
}

.table tr:last-child td {
    border-bottom: none;
}

.table tr:hover td {
    background: var(--color-surface-1);
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    padding: var(--space-md);
}

.modal {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.modal__title {
    font-size: var(--text-lg);
    font-weight: 600;
}

.modal__close {
    color: var(--color-text-tertiary);
    font-size: var(--text-xl);
    line-height: 1;
    transition: color var(--transition-fast);
}

.modal__close:hover {
    color: var(--color-text-primary);
}

.modal__body {
    padding: var(--space-lg);
}

.modal__footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--color-border);
}

/* ===== Tabs ===== */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--color-border);
    gap: var(--space-xs);
    overflow-x: auto;
}

.tabs__tab {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.tabs__tab:hover {
    color: var(--color-text-primary);
}

.tabs__tab--active {
    color: var(--color-accent-cyan);
    border-bottom-color: var(--color-accent-cyan);
}

/* ===== Tooltip ===== */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-surface-5);
    color: var(--color-text-primary);
    font-size: var(--text-xs);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
    z-index: var(--z-tooltip, 600);
}

[data-tooltip]:hover::after {
    opacity: 1;
}

/* ===== Skeleton loader ===== */
.skeleton {
    background: var(--color-surface-2);
    border-radius: var(--radius-sm);
    animation: skeleton-pulse 1.5s ease-in-out infinite;
}

@keyframes skeleton-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ===== Divider ===== */
.divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--space-lg) 0;
}

/* ===== Avatar ===== */
.avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--color-surface-3);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 600;
}

.avatar--sm { width: 24px; height: 24px; font-size: var(--text-xs); }
.avatar--lg { width: 48px; height: 48px; font-size: var(--text-lg); }

/* ===== Empty state ===== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
}

.empty-state__title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.empty-state__description {
    color: var(--color-text-secondary);
    max-width: 400px;
    margin-bottom: var(--space-lg);
}

/* ===== Navigation (public) ===== */
.nav-public {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
}

.nav-public__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--max-width-wide);
    margin: 0 auto;
    padding: var(--space-md) var(--space-md);
    gap: var(--space-lg);
}

.nav-public__logo-text {
    font-family: var(--font-serif);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

.nav-public__links {
    display: none;
    align-items: center;
    gap: var(--space-lg);
}

.nav-public__link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    white-space: nowrap;
}

.nav-public__link:hover {
    color: var(--color-text-primary);
}

/* External subdomain links (App / Partners / Docs from the LMS nav) */
.nav-public__link--alt {
    color: var(--color-text-tertiary);
    font-weight: 400;
}
.nav-public__link--alt:hover {
    color: var(--color-accent-cyan);
}
.nav-public__link--alt::after {
    content: "↗";
    display: inline-block;
    margin-left: 3px;
    font-size: 0.85em;
    opacity: 0.65;
}

.nav-public__divider {
    width: 1px;
    height: 20px;
    background: var(--color-border);
    margin: 0 var(--space-xs);
    align-self: center;
    display: inline-block;
}

.nav-public__actions {
    display: none;
    align-items: center;
    gap: var(--space-md);
}

/* Signed-in variant — name · Dashboard instead of Sign in / Get Started. */
.nav-public__user {
    font-size: var(--text-sm);
    color: var(--color-text-primary);
    font-weight: 500;
    max-width: 180px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.nav-public__sep {
    color: var(--color-text-tertiary);
    font-size: var(--text-sm);
}
.nav-public__dashboard {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-accent-cyan);
    text-decoration: none;
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--color-accent-cyan);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), color var(--transition-fast);
}
.nav-public__dashboard:hover {
    background: var(--color-accent-cyan);
    color: var(--color-bg);
}

.nav-public__toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-xs);
}

.nav-public__toggle-bar {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--color-text-primary);
    transition: transform var(--transition-fast);
}

@media (min-width: 768px) {
    .nav-public__links {
        display: flex;
    }

    .nav-public__actions {
        display: flex;
    }

    .nav-public__toggle {
        display: none;
    }
}

/* ===== Nav Dropdowns ===== */
.nav-dropdown {
    position: relative;
}

.nav-dropdown__trigger {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: color 0.2s;
}

.nav-dropdown__trigger:hover {
    color: var(--color-text-primary);
}

.nav-chevron {
    transition: transform 0.2s;
}

.nav-dropdown:hover .nav-chevron {
    transform: rotate(180deg);
}

.nav-dropdown__menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    min-width: 240px;
    background: #0a0a0a;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    padding: 12px;
    margin-top: 14px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.18s ease, visibility 0.18s ease, transform 0.18s ease;
    z-index: 1000;
    backdrop-filter: blur(20px);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .nav-dropdown__menu {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.08);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(0, 0, 0, 0.04);
}

.nav-dropdown:hover .nav-dropdown__menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* Profound-style mega menu — section-grouped multi-column with optional featured card */
.nav-dropdown__menu--mega {
    min-width: 600px;
    padding: 16px;
}

/* Wide mega menus span 75vw centered on the viewport (desktop only).
   The nav-dropdown wrapper is made position:static so the absolute menu
   walks up to .nav-public (sticky) as its containing block — top:100%
   then anchors to the bottom of the header without hardcoding a height.
   Narrow exception (Partner) keeps its trigger-anchored width.
   Mobile block below resets to inline behavior. */
@media (min-width: 768px) {
    .nav-dropdown:has(.nav-dropdown__menu--mega:not(.nav-dropdown__menu--narrow)) {
        position: static;
    }

    .nav-dropdown__menu--mega:not(.nav-dropdown__menu--narrow) {
        top: 100%;
        left: 50%;
        right: auto;
        transform: translateX(-50%) translateY(-4px);
        width: 75vw;
        min-width: 0;
        max-width: 1400px;
        margin-top: 14px;
    }

    .nav-dropdown:hover .nav-dropdown__menu--mega:not(.nav-dropdown__menu--narrow) {
        transform: translateX(-50%) translateY(0);
    }

    /* Hover bridge — invisible strip above the menu that keeps the
       descendant-hover relationship alive while the cursor crosses the
       14px gap between trigger and menu. */
    .nav-dropdown__menu--mega:not(.nav-dropdown__menu--narrow)::before {
        content: "";
        position: absolute;
        top: -14px;
        left: 0;
        right: 0;
        height: 14px;
    }
}

.nav-dropdown__menu--narrow {
    min-width: 320px;
}

.nav-mega__layout {
    display: flex;
    gap: 16px;
    align-items: stretch;
}

.nav-mega__layout--with-feature .nav-mega__cols { flex: 1 1 auto; }
.nav-mega__layout--with-feature .nav-mega__feature { flex: 0 0 220px; }

.nav-mega__cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 16px;
}

.nav-mega__cols--single {
    grid-template-columns: 1fr;
}

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

.nav-mega__section-label {
    margin: 4px 8px 6px;
    font-size: 11px;
    font-weight: 500;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.nav-mega__section-label--spaced {
    margin-top: 14px;
}

/* Profound's signature menu item: 32px icon tile + label + description */
.nav-mega__item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px;
    border-radius: 10px;
    text-decoration: none;
    transition: background 0.15s ease;
    min-width: 0;
}

.nav-mega__item:hover {
    background: rgba(255, 255, 255, 0.04);
}

[data-theme="light"] .nav-mega__item:hover {
    background: rgba(0, 0, 0, 0.04);
}

.nav-mega__icon {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: var(--icon-tint, rgba(255, 255, 255, 0.08));
    color: var(--color-text-primary);
    transition: transform 0.15s ease;
}

.nav-mega__item:hover .nav-mega__icon {
    transform: translateY(-1px);
}

.nav-mega__icon svg {
    width: 18px;
    height: 18px;
}

.nav-mega__icon--bb {
    background: linear-gradient(135deg, #1a1a1a, #0a0a0a);
    color: #c8a247;
    border: 1px solid rgba(200, 162, 71, 0.3);
}

.nav-mega__copy {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.nav-mega__title {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1.3;
}

.nav-mega__desc {
    font-size: 12.5px;
    color: var(--color-text-tertiary);
    line-height: 1.4;
}

.nav-mega__item:hover .nav-mega__desc {
    color: var(--color-text-secondary);
}

/* ===== Featured card (right rail) ===== */
.nav-mega__feature {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 4px;
    padding: 16px;
    border-radius: 12px;
    text-decoration: none;
    background: linear-gradient(180deg, rgba(0, 235, 255, 0.10), rgba(168, 139, 250, 0.06));
    border: 1px solid rgba(255, 255, 255, 0.08);
    overflow: hidden;
    min-height: 240px;
    transition: border-color 0.15s ease, transform 0.15s ease;
}

[data-theme="light"] .nav-mega__feature {
    background: linear-gradient(180deg, rgba(0, 180, 200, 0.08), rgba(168, 139, 250, 0.06));
    border-color: rgba(0, 0, 0, 0.08);
}

.nav-mega__feature:hover {
    border-color: rgba(255, 255, 255, 0.16);
}

[data-theme="light"] .nav-mega__feature:hover {
    border-color: rgba(0, 0, 0, 0.16);
}

.nav-mega__feature--cert {
    background: linear-gradient(180deg, rgba(74, 222, 128, 0.10), rgba(0, 235, 255, 0.06));
}

.nav-mega__feature--blackbox {
    background: linear-gradient(180deg, #15110a 0%, #0a0a0a 100%);
    border-color: rgba(200, 162, 71, 0.25);
}

.nav-mega__feature--blackbox:hover {
    border-color: rgba(200, 162, 71, 0.5);
}

.nav-mega__feature-art {
    position: absolute;
    inset: 0 0 auto 0;
    height: 130px;
    overflow: hidden;
    pointer-events: none;
}

/* Concentric rings for Platform feature */
.nav-feature-ring,
.nav-feature-core {
    position: absolute;
    left: 50%;
    top: 50%;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    border: 1px solid rgba(0, 235, 255, 0.4);
}

.nav-feature-ring--1 { width: 60px; height: 60px; opacity: 0.9; }
.nav-feature-ring--2 { width: 100px; height: 100px; opacity: 0.6; }
.nav-feature-ring--3 { width: 140px; height: 140px; opacity: 0.3; }

.nav-feature-core {
    width: 14px;
    height: 14px;
    background: radial-gradient(circle, #00ebff 0%, rgba(0, 235, 255, 0.6) 60%, transparent 100%);
    border: none;
    box-shadow: 0 0 24px rgba(0, 235, 255, 0.6);
}

/* Stepped bars for Certification feature */
.nav-mega__feature-art--bars {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 8px;
    padding: 16px;
    box-sizing: border-box;
}

.nav-feature-bar {
    flex: 0 0 16px;
    height: var(--h, 50%);
    border-radius: 3px 3px 0 0;
    background: linear-gradient(180deg, rgba(74, 222, 128, 0.3), rgba(74, 222, 128, 0.05));
    border-top: 2px solid rgba(74, 222, 128, 0.5);
}

.nav-feature-bar--accent {
    background: linear-gradient(180deg, rgba(0, 235, 255, 0.5), rgba(0, 235, 255, 0.1));
    border-top-color: #00ebff;
    box-shadow: 0 0 12px rgba(0, 235, 255, 0.4);
}

/* Black Box feature glossy panel */
.nav-mega__feature-art--bb {
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-feature-bb-shell {
    width: 70px;
    height: 70px;
    border-radius: 10px;
    background: linear-gradient(135deg, #2a2a2a 0%, #050505 100%);
    border: 1px solid rgba(200, 162, 71, 0.3);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 8px 30px rgba(0, 0, 0, 0.6);
    position: relative;
    z-index: 1;
}

.nav-feature-bb-glow {
    position: absolute;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(200, 162, 71, 0.18) 0%, transparent 70%);
    filter: blur(12px);
}

.nav-mega__feature-eyebrow {
    position: relative;
    z-index: 2;
    margin-top: 130px;
    font-size: 11px;
    font-weight: 600;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.nav-mega__feature-title {
    position: relative;
    z-index: 2;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1.25;
}

.nav-mega__feature--blackbox .nav-mega__feature-title {
    font-family: 'IBM Plex Sans', var(--font-ui);
}

.nav-mega__feature-desc {
    position: relative;
    z-index: 2;
    font-size: 12.5px;
    color: var(--color-text-secondary);
    line-height: 1.45;
    margin-bottom: 4px;
}

.nav-mega__feature-cta {
    position: relative;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-top: 4px;
}

.nav-mega__feature-cta svg {
    transition: transform 0.15s ease;
}

.nav-mega__feature:hover .nav-mega__feature-cta svg {
    transform: translateX(2px);
}

/* Legacy simple dropdown links */
.nav-dropdown__link {
    display: block;
    padding: 8px 16px;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: all 0.2s;
}

.nav-dropdown__link:hover {
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.05);
}

/* ===== Mobile menu =====
   Both panels open together and must stack as a single cohesive drawer
   (previously each was position:absolute top:100%, so they overlapped).
   Solution: links takes the top slot, actions the bottom — identical
   background/borders so visually they read as one panel. */
.nav-public__links.is-open {
    display: flex !important;
    flex-direction: column;
    align-items: stretch;
    position: fixed;
    top: 56px;         /* sits flush below the header strip */
    left: 0;
    right: 0;
    max-height: calc(100vh - 56px - 72px); /* leave room for actions at bottom */
    overflow-y: auto;
    padding: 16px;
    gap: 2px;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    z-index: 999;
}
.nav-public__links.is-open .nav-public__link,
.nav-public__links.is-open .nav-dropdown__trigger {
    padding: 12px 14px;
    border-radius: 8px;
    text-align: left;
    color: var(--color-text-primary);
    font-size: 15px;
}
.nav-public__links.is-open .nav-public__link:hover,
.nav-public__links.is-open .nav-dropdown__trigger:hover {
    background: var(--color-surface-1);
}
.nav-public__links.is-open .nav-public__divider {
    width: auto; height: 1px;
    margin: 8px 0;
    background: var(--color-border);
}

.nav-public__actions.is-open {
    display: flex !important;
    flex-direction: row;
    align-items: center;
    gap: 12px;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 14px 16px calc(14px + env(safe-area-inset-bottom, 0));
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    z-index: 1000;
}
.nav-public__actions.is-open .nav-public__user {
    flex: 0 1 auto;
    min-width: 0;
    max-width: 50%;
}
.nav-public__actions.is-open .nav-public__dashboard,
.nav-public__actions.is-open .btn {
    flex: 1 1 auto;
    text-align: center;
}
.nav-public__actions.is-open .nav-public__link {
    flex: 1 1 auto;
    text-align: center;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

/* Lock the page scroll while the drawer is open so the overlay is the
   only surface the user interacts with. */
body.nav-public-open { overflow: hidden; }

@media (max-width: 767px) {
    /* Reset desktop dropdown behavior for mobile */
    .nav-dropdown__menu,
    .nav-dropdown__menu--mega,
    .nav-dropdown__menu.nav-dropdown__menu--mega {
        position: static !important;
        background: transparent !important;
        border: none !important;
        border-radius: 0 !important;
        padding: 0 0 0 16px !important;
        margin: 0 !important;
        min-width: 0 !important;
        opacity: 1 !important;
        visibility: hidden;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, visibility 0s 0.3s;
        transform: none !important;
        backdrop-filter: none !important;
        box-shadow: none !important;
    }

    /* When toggled open via JS */
    .nav-dropdown__menu.is-open,
    .nav-dropdown__menu--mega.is-open,
    .nav-dropdown__menu.nav-dropdown__menu--mega.is-open {
        visibility: visible !important;
        max-height: 600px;
        transition: max-height 0.3s ease, visibility 0s;
    }

    /* Disable hover on mobile */
    .nav-dropdown:hover .nav-dropdown__menu,
    .nav-dropdown:hover .nav-dropdown__menu--mega {
        opacity: 1;
        visibility: hidden;
        transform: none;
    }

    .nav-mega__layout {
        flex-direction: column;
        gap: 8px;
    }

    .nav-mega__layout--with-feature .nav-mega__feature {
        flex: 0 0 auto;
        min-height: 140px;
    }

    .nav-mega__cols,
    .nav-mega__cols--single {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .nav-mega__item {
        padding: 8px 0;
        border-radius: 4px;
    }

    .nav-mega__icon {
        width: 28px;
        height: 28px;
    }

    .nav-mega__icon svg {
        width: 16px;
        height: 16px;
    }

    .nav-mega__desc {
        display: none;
    }

    .nav-mega__section-label {
        margin-top: 8px;
    }

    .nav-mega__feature-eyebrow {
        margin-top: 100px;
    }

    /* Dropdown trigger styling in mobile */
    .nav-dropdown__trigger {
        width: 100%;
        justify-content: space-between;
        padding: 10px 0;
        font-size: 15px;
    }
}

/* ===== Footer (marketing) ===== */
.footer-marketing {
    border-top: 1px solid var(--color-border);
    padding: 80px 0 var(--space-lg);
    background: var(--color-surface-1);
}

.footer-marketing__container {
    max-width: var(--max-width-wide);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.footer-marketing__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl) var(--space-lg);
    margin-bottom: var(--space-xl);
}

/* Tablet: brand full-width, 2-col link grid below */
@media (min-width: 640px) {
    .footer-marketing__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-marketing__brand {
        grid-column: 1 / -1;
    }
}

/* Small desktop: 3 columns of links + brand top */
@media (min-width: 960px) {
    .footer-marketing__grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .footer-marketing__brand {
        grid-column: 1 / -1;
    }
}

/* Full desktop: brand + 5 link columns side by side */
@media (min-width: 1200px) {
    .footer-marketing__grid {
        grid-template-columns: 1.6fr repeat(5, 1fr);
    }
    .footer-marketing__brand {
        grid-column: auto;
    }
}

.footer-marketing__brand {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-marketing__brand .theme-switcher {
    margin-top: var(--space-sm);
}

.footer-marketing__logo {
    font-family: var(--font-serif);
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1;
}

.footer-marketing__tagline {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    margin: 0;
}

.footer-marketing__address {
    color: var(--color-text-tertiary);
    font-size: var(--text-xs);
    margin-top: var(--space-sm);
    max-width: 220px;
    line-height: 1.5;
}

.footer-marketing__heading {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.footer-marketing__heading--spaced {
    margin-top: var(--space-lg);
}

.footer-marketing__list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-marketing__link {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-marketing__link:hover {
    color: var(--color-text-primary);
    text-decoration: none;
}

.footer-marketing__bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-marketing__copyright {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    margin: 0;
}

/* ===== Docs layout ===== */
.docs-layout {
    display: flex;
    min-height: calc(100vh - 60px);
}

.docs-sidebar {
    display: none;
    width: 260px;
    flex-shrink: 0;
    border-right: 1px solid var(--color-border);
    padding: var(--space-lg) var(--space-md);
    overflow-y: auto;
    position: sticky;
    top: 60px;
    height: calc(100vh - 60px);
}

@media (min-width: 1024px) {
    .docs-sidebar {
        display: block;
    }
}

.docs-nav__section {
    margin-bottom: var(--space-lg);
}

.docs-nav__heading {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-sm);
}

.docs-nav__list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.docs-nav__link {
    display: block;
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.docs-nav__link:hover {
    color: var(--color-text-primary);
    background: var(--color-surface-1);
}

.docs-nav__link--active {
    color: var(--color-accent-cyan);
    background: var(--color-accent-cyan-muted);
}

.docs-content {
    flex: 1;
    display: flex;
    max-width: 100%;
    overflow: hidden;
}

.docs-article {
    flex: 1;
    padding: var(--space-lg);
    max-width: var(--max-width-narrow);
}

.docs-toc {
    display: none;
    width: 200px;
    flex-shrink: 0;
    padding: var(--space-lg) var(--space-md);
    position: sticky;
    top: 60px;
    height: calc(100vh - 60px);
    overflow-y: auto;
}

@media (min-width: 1024px) {
    .docs-toc {
        display: block;
    }
}

.docs-toc__heading {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-sm);
}

.docs-toc__list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* ===== Docs footer ===== */
.footer-docs {
    border-top: 1px solid var(--color-border);
    padding: var(--space-md) 0;
}

.footer-docs__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-docs__copyright {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.footer-docs__links {
    display: flex;
    gap: var(--space-md);
}

.footer-docs__link {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-docs__link:hover {
    color: var(--color-text-primary);
}

/* ===== App nav ===== */
.nav-app {
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
}

.nav-app__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--max-width-wide);
    margin: 0 auto;
    padding: var(--space-sm) var(--space-md);
    gap: var(--space-md);
}

.nav-app__logo-text {
    font-family: var(--font-serif);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text-primary);
}

.nav-app__links {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-app__link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.nav-app__link:hover {
    color: var(--color-text-primary);
}

.nav-app__user {
    position: relative;
}

.nav-app__user-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.nav-app__user-btn:hover {
    background: var(--color-surface-2);
}

.nav-app__avatar {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background: var(--color-surface-3);
}

.nav-app__user-name {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.nav-app__dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 180px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-xs) 0;
    z-index: var(--z-dropdown);
    margin-top: var(--space-xs);
}

.nav-app__dropdown-item {
    display: block;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.nav-app__dropdown-item:hover {
    background: var(--color-surface-1);
    color: var(--color-text-primary);
}

.nav-app__dropdown-divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--space-xs) 0;
}

/* ===== App nav mobile toggle ===== */
.nav-app__toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-xs);
    background: none;
    border: none;
    cursor: pointer;
}

@media (min-width: 768px) {
    .nav-app__toggle {
        display: none;
    }
}

@media (max-width: 767px) {
    .nav-app__links {
        display: none;
    }
}

.nav-app__links.is-open {
    display: flex !important;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.95);
    border-bottom: 1px solid var(--color-border);
    padding: 16px;
    gap: 8px;
    z-index: 1000;
}

/* ===== App footer ===== */
.footer-app {
    border-top: 1px solid var(--color-border);
    padding: var(--space-sm) 0;
}

.footer-app__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--max-width-wide);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.footer-app__copyright {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
}

.footer-app__links {
    display: flex;
    gap: var(--space-md);
}

.footer-app__link {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.footer-app__link:hover {
    color: var(--color-text-secondary);
}

/* ===== Unified top nav (marketing-style, sits above subsystem header on all authenticated subsystems) ===== */
.nav-brrain-top {
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
}
/* Full-width container, not max-width-centered, so the "bRRAIn" wordmark
   in the top nav lines up with the "bRRAIn <subsystem>" logo in the
   subsystem-header and the first item in the left sidebar. */
.nav-brrain-top__container {
    display: flex; align-items: center; justify-content: space-between;
    padding: var(--space-sm) var(--space-lg);
    gap: var(--space-lg);
}
.nav-brrain-top__logo-text {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: var(--text-xl);
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
    text-decoration: none;
}
.nav-brrain-top__links {
    display: none;
    align-items: center;
    gap: var(--space-lg);
}
@media (min-width: 900px) { .nav-brrain-top__links { display: flex; } }
.nav-brrain-top__link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
    white-space: nowrap;
}
.nav-brrain-top__link:hover { color: var(--color-text-primary); }
.nav-brrain-top__toggle {
    display: flex; flex-direction: column; gap: 5px; padding: var(--space-xs);
    background: transparent; border: none; cursor: pointer;
}
@media (min-width: 900px) { .nav-brrain-top__toggle { display: none; } }
.nav-brrain-top__links.is-open {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: 60px; left: 0; right: 0;
    background: var(--color-bg); border-bottom: 1px solid var(--color-border);
    padding: var(--space-md); gap: var(--space-md); z-index: 40;
}

/* ===== Subsystem header (second layer: app, learn, partners) =====
   Shared class so all three authenticated subsystems render identically:
   subsystem logo + badge on the left, primary subsystem links, then bell
   and account dropdown on the right. */
.subsystem-header {
    position: sticky; top: 0; z-index: 30;
    display: flex; align-items: center; justify-content: space-between;
    /* Horizontal padding matches .nav-brrain-top__container and the
       first icon in the left sidebar so all three logos share a left edge
       at --space-lg (~24px) in from the viewport. */
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-surface-1);
    border-bottom: 1px solid var(--color-border);
    min-height: 56px;
}
.subsystem-header__left {
    display: flex; align-items: center; gap: var(--space-md);
}
.subsystem-header__right {
    display: flex; align-items: center; gap: var(--space-sm);
}
.subsystem-header__logo {
    display: inline-flex; align-items: center; gap: var(--space-sm);
    text-decoration: none;
}
.subsystem-header__logo-text {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: var(--text-xl);
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}
.subsystem-header__badge {
    display: inline-flex; align-items: center;
    padding: 3px 8px;
    background: var(--color-accent-cyan);
    color: var(--color-bg);
    border-radius: 4px;
    font-family: var(--font-ui);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.subsystem-header__links {
    display: none;
    align-items: center;
    gap: var(--space-md);
    margin-left: var(--space-md);
    padding-left: var(--space-md);
    border-left: 1px solid var(--color-border);
}
@media (min-width: 900px) { .subsystem-header__links { display: flex; } }
.subsystem-header__link {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
}
.subsystem-header__link:hover {
    color: var(--color-text-primary);
    background: rgba(0,212,170,0.06);
}
.subsystem-header__link--active {
    color: var(--color-accent-cyan);
    background: rgba(0,212,170,0.1);
}

.subsystem-header__notifications {
    background: transparent; border: none; cursor: pointer;
    color: var(--color-text-secondary);
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    display: inline-flex; align-items: center;
    transition: color var(--transition-fast), background var(--transition-fast);
}
.subsystem-header__notifications:hover {
    color: var(--color-accent-cyan);
    background: rgba(0,212,170,0.06);
}

.subsystem-header__user { position: relative; }
.subsystem-header__user-btn {
    display: inline-flex; align-items: center; gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: transparent; border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font: inherit; cursor: pointer;
    transition: border-color var(--transition-fast);
}
.subsystem-header__user-btn:hover { border-color: var(--color-accent-cyan); }
.subsystem-header__avatar {
    width: 26px; height: 26px;
    border-radius: 50%;
    background: var(--color-accent-cyan);
    color: var(--color-bg);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 700;
}
.subsystem-header__user-name {
    font-size: var(--text-sm);
    max-width: 120px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
@media (max-width: 640px) { .subsystem-header__user-name { display: none; } }
.subsystem-header__dropdown {
    position: absolute; right: 0; top: calc(100% + 4px);
    min-width: 180px;
    background: var(--color-surface-1);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
    padding: var(--space-xs);
    z-index: 40;
}
.subsystem-header__dropdown[hidden] { display: none; }
.subsystem-header__dropdown-item {
    display: block;
    padding: var(--space-xs) var(--space-sm);
    color: var(--color-text-primary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
}
.subsystem-header__dropdown-item:hover {
    background: rgba(0,212,170,0.08);
    color: var(--color-accent-cyan);
}
.subsystem-header__dropdown-divider {
    border: none; border-top: 1px solid var(--color-border);
    margin: var(--space-xs) 0;
}

/* ===== Sidebar: cross-subdomain switcher (shared between app + partners) ===== */
.app-sidebar__switcher,
.partner-sidebar__switcher {
    padding: var(--space-md) var(--space-md) var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.app-sidebar__switcher-label,
.partner-sidebar__switcher-label {
    display: block;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-tertiary);
    padding: 0 var(--space-xs) var(--space-xs);
}
.app-sidebar__switcher-link,
.partner-sidebar__switcher-link {
    display: flex; align-items: center; gap: var(--space-sm);
    padding: 6px var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: background var(--transition-fast), color var(--transition-fast);
}
.app-sidebar__switcher-link:hover,
.partner-sidebar__switcher-link:hover {
    background: rgba(0,212,170,0.06);
    color: var(--color-accent-cyan);
}
.app-sidebar__switcher-link svg,
.partner-sidebar__switcher-link svg { flex-shrink: 0; color: currentColor; }
.app-sidebar__divider,
.partner-sidebar__divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--space-sm) 0;
}


/* ===== Partner nav ===== */
.nav-partner {
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
}

.nav-partner__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--max-width-wide);
    margin: 0 auto;
    padding: var(--space-sm) var(--space-md);
    gap: var(--space-md);
}

.nav-partner__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-partner__logo-text {
    font-family: var(--font-serif);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text-primary);
}

.nav-partner__badge {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-partner__links {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-partner__link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.nav-partner__link:hover {
    color: var(--color-text-primary);
}

.nav-partner__tier-badge {
    display: inline-block;
    padding: 2px var(--space-sm);
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

.nav-partner__tier-badge--gold {
    border-color: #ffd700;
    color: #ffd700;
}

.nav-partner__tier-badge--silver {
    border-color: #c0c0c0;
    color: #c0c0c0;
}

.nav-partner__tier-badge--bronze {
    border-color: #cd7f32;
    color: #cd7f32;
}

/* ===== Global: all logo text uses IBM Plex Serif ===== */
[class*="logo-text"],
[class*="logo__text"],
.footer-marketing__logo,
.partner-header__logo-text,
.app-header__logo-text,
.status-page__logo-text {
    font-family: var(--font-serif) !important;
    font-weight: 600 !important;
    letter-spacing: -0.02em;
}