/**
 * Shared app shell — nav, sidebar, main layout.
 * Page-specific styles stay in each template's #page-styles block.
 */
:root {
    --nav-height: 64px;
    --sidebar-width: 260px;
    --primary: #1a1a1a;
    --bg: #f5f5f0;
    --bg-light: #ffffff;
    --text: #1a1a1a;
    --text-muted: #666666;
    --border: rgba(26, 26, 26, 0.1);
    --radius: 8px;
}

body {
    font-family: 'Space Grotesk', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    padding-top: var(--nav-height);
}

/* Shell variable locks: prevent page-level :root overrides from inflating the sidebar */
body.vibbs-standard-shell {
    --sidebar-width: 260px;
    --nav-height: 64px;
}

.unified-top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    min-height: var(--nav-height);
    padding-top: env(safe-area-inset-top, 0);
    background: var(--bg-light);
    border-bottom: 2px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-left: 24px;
    padding-right: 24px;
    z-index: 1000;
}

.unified-top-nav-left {
    display: flex;
    align-items: center;
    gap: 32px;
    min-width: 0;
}

.unified-top-nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.unified-logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--primary);
    text-decoration: none;
}

.unified-logo:hover { opacity: 0.7; }

.unified-nav-links { display: flex; gap: 4px; }

.unified-nav-link,
.unified-btn {
    padding: 10px 20px;
    border: 2px solid var(--primary);
    background: transparent;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border-radius: var(--radius);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.unified-nav-link { padding: 8px 16px; }

.unified-nav-link:hover,
.unified-btn:hover {
    background: rgba(26, 26, 26, 0.05);
}

.unified-btn:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26, 26, 26, 0.2);
}

.unified-btn-primary {
    background: var(--primary);
    color: white;
}

.unified-btn-primary:hover { background: #2a2a2a; }

.unified-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    text-decoration: none;
    border: 2px solid var(--primary);
}

.unified-sidebar {
    position: fixed;
    left: 0;
    top: var(--nav-height);
    width: var(--sidebar-width);
    height: calc(100vh - var(--nav-height));
    background: var(--bg-light);
    border-right: 2px solid var(--primary);
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.06);
    padding: 24px 0;
    overflow-y: auto;
    z-index: 999;
    display: none;
    transition: transform 0.3s ease;
}

.unified-sidebar-nav {
    display: block;
    padding: 0 16px;
    /* Collapse whitespace text nodes so innerHTML swaps cannot add phantom flex rows */
    font-size: 0;
    line-height: 0;
}

.unified-sidebar-item {
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 44px;
    margin: 0;
    padding: 14px 20px;
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.75rem;
    line-height: 1.25;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border-radius: var(--radius);
    border-left: 3px solid transparent;
}

.unified-sidebar-item + .unified-sidebar-item {
    margin-top: 4px;
}

.unified-sidebar-item:hover {
    background: rgba(26, 26, 26, 0.05);
    border-left-color: var(--primary);
}

.unified-sidebar-item.active {
    background: var(--primary);
    color: white;
    border-left-color: var(--primary);
}

.unified-sidebar-item.active img.unified-sidebar-icon { filter: invert(1); }

.unified-sidebar-icon {
    width: 20px;
    height: 20px;
    text-align: center;
    flex-shrink: 0;
}

.main-content,
.feed-main {
    margin-left: 0;
    margin-top: 0;
    padding: 32px 24px;
    flex: 1;
    min-height: calc(100vh - var(--nav-height));
    transition: margin-left 0.3s ease, opacity 0.15s ease;
}

.main-content.with-sidebar,
.feed-main.with-sidebar {
    margin-left: var(--sidebar-width);
}

.main-content.sidebar-collapsed,
.feed-main.sidebar-collapsed {
    margin-left: 0 !important;
}

.sidebar-backdrop,
.feed-sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    z-index: 998;
    top: var(--nav-height);
}

.mobile-nav-toggle,
.feed-sidebar-toggle {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 2px solid var(--primary);
    border-radius: var(--radius);
    color: var(--primary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0;
}

.sidebar-toggle {
    position: fixed;
    left: var(--sidebar-width);
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 32px;
    background: var(--primary);
    color: white;
    border: 2px solid var(--primary);
    border-left: none;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: left 0.3s ease;
    font-size: 0.6rem;
    font-weight: 700;
    padding: 0;
}

.sidebar-toggle.collapsed { left: 0; }
.sidebar-toggle.collapsed::after { content: '▶'; }
.sidebar-toggle:not(.collapsed)::after { content: '◀'; }

.unified-sidebar.collapsed { transform: translateX(-100%); }

body.feed-logged-in .unified-sidebar,
body.feed-logged-in #feedSidebar { display: block !important; }

.vibbs-nav-loading {
    opacity: 0.55;
    pointer-events: none;
}

@media (max-width: 768px) {
    :root { --nav-height: 52px; }
    html {
        overflow-x: hidden;
        max-width: 100%;
    }
    body {
        padding-top: 52px;
        overflow-x: hidden;
        max-width: 100vw;
    }
    .unified-top-nav {
        padding: 0 10px;
        min-height: 52px;
        z-index: 1001;
    }
    .unified-top-nav-left { gap: 12px; min-width: 0; }
    .unified-top-nav-right { gap: 6px; flex-shrink: 0; }
    .unified-nav-links { display: none; }
    .unified-logo { font-size: 1rem; letter-spacing: 2px; }
    .unified-btn { padding: 8px 12px; font-size: 0.7rem; }
    .unified-user-avatar { display: none !important; }
    .main-content,
    .main-content.with-sidebar,
    .main-content.sidebar-collapsed,
    .feed-main,
    .feed-main.with-sidebar,
    .feed-main.sidebar-collapsed,
    .unified-main-content,
    .unified-main-content.with-sidebar,
    .unified-main-content.sidebar-collapsed {
        margin-left: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
        padding-left: calc(12px + env(safe-area-inset-left, 0)) !important;
        padding-right: calc(12px + env(safe-area-inset-right, 0)) !important;
        overflow-x: hidden !important;
        box-sizing: border-box !important;
    }
    body.vibbs-standard-shell .main-content,
    body.vibbs-standard-shell .main-content.with-sidebar,
    body.vibbs-standard-shell .main-content.sidebar-collapsed {
        margin-left: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
    }
    body.vibbs-standard-shell .container {
        margin-left: 0 !important;
        margin-right: 0 !important;
        max-width: 100% !important;
        width: 100% !important;
        min-width: 0 !important;
        box-sizing: border-box !important;
    }
    .unified-footer,
    .unified-footer.sidebar-collapsed {
        margin-left: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
    }
    .sidebar-toggle { display: none !important; }
    .mobile-nav-toggle,
    body.feed-logged-in .feed-sidebar-toggle { display: flex; }
    body .unified-sidebar,
    body.feed-logged-in .unified-sidebar {
        transform: translateX(-100%);
        width: 260px;
        max-width: 85vw;
        z-index: 1002;
    }
    .mobile-nav-toggle,
    #mobileNavToggle {
        display: flex !important;
        align-items: center;
        justify-content: center;
        position: relative;
        z-index: 2;
        pointer-events: auto !important;
        touch-action: manipulation;
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }

    body.mobile-sidebar-open .unified-sidebar,
    body.mobile-sidebar-open .unified-sidebar.collapsed,
    body.feed-sidebar-open .unified-sidebar,
    body.feed-sidebar-open .unified-sidebar.collapsed {
        display: block !important;
        transform: translateX(0) !important;
        visibility: visible !important;
    }
    .sidebar-backdrop,
    .feed-sidebar-backdrop {
        display: none !important;
        pointer-events: none;
    }
    body.mobile-sidebar-open .sidebar-backdrop,
    body.feed-sidebar-open .feed-sidebar-backdrop {
        display: block !important;
        pointer-events: auto;
    }
    header {
        transform: none !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        min-width: 0 !important;
    }
}

/* Create tab — star pinned to right edge of row */
#sidebarCreateLink.unified-sidebar-item {
    display: flex !important;
    align-items: center;
    width: 100%;
    box-sizing: border-box;
    gap: 12px;
}
#sidebarCreateLink .sidebar-create-label {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 0.75rem;
    line-height: 1.25;
}
#sidebarCreateLink.is-creator-tab .sidebar-create-end {
    flex: 0 0 auto;
    margin-left: auto;
    padding-right: 10px;
    line-height: 1;
}
#sidebarCreateLink .sidebar-create-star {
    color: var(--primary, #1a1a1a);
    font-size: 0.75rem;
    line-height: 1;
}
#sidebarCreateLink.unified-sidebar-item.active .sidebar-create-star {
    color: #fff;
}
#sidebarCreateLink .sidebar-create-end[hidden] {
    display: none !important;
}

/* Locked on all standard-shell pages — wins over stale #page-styles from soft-nav sources */
body.vibbs-standard-shell .unified-sidebar-nav {
    display: block !important;
    padding: 0 16px !important;
    font-size: 0 !important;
    line-height: 0 !important;
}
body.vibbs-standard-shell .unified-sidebar-item {
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    min-height: 44px !important;
    height: 44px !important;
    margin: 0 !important;
    padding: 0 20px !important;
    font-size: 0.75rem !important;
    line-height: 1.25 !important;
    box-sizing: border-box !important;
}
body.vibbs-standard-shell .unified-sidebar-item + .unified-sidebar-item {
    margin-top: 4px !important;
}
body.vibbs-standard-shell .unified-sidebar-item span {
    font-size: 0.75rem !important;
    line-height: 1.25 !important;
}
body.vibbs-standard-shell #sidebarCreateLink.unified-sidebar-item {
    gap: 12px !important;
}
body.vibbs-standard-shell .unified-sidebar {
    padding: 24px 0 !important;
}
body.vibbs-standard-shell img.unified-sidebar-icon {
    width: 20px !important;
    height: 20px !important;
    flex-shrink: 0 !important;
    display: block !important;
    object-fit: contain !important;
}
body.vibbs-standard-shell .main-content,
body.vibbs-standard-shell .main-content.with-sidebar,
body.vibbs-standard-shell .main-content.sidebar-collapsed {
    margin-top: 0 !important;
    box-sizing: border-box !important;
}
body.vibbs-standard-shell .main-content {
    margin-left: 0 !important;
    padding: 32px 24px !important;
    width: auto !important;
    max-width: none !important;
}
@media (min-width: 769px) {
    body.vibbs-standard-shell .main-content.with-sidebar {
        margin-left: var(--sidebar-width) !important;
    }
}
body.vibbs-standard-shell .main-content.sidebar-collapsed {
    margin-left: 0 !important;
}