/* ============================================================================
   index.html — hub / landing
   Extracted from the inline <style> block (dissection refactor).
   ========================================================================== */

:root {
    --glass-surface: var(--global-bg-surface-glass);
    /* Pre-theme fallbacks: once GlobalApp sets data-theme, the bars.html theme
       blocks define --glass-border/--glass-shadow at higher specificity and
       these self-references are discarded. */
    --glass-border: var(--glass-border, oklch(100% 0 0 / 0.1));
    --glass-shadow: var(--glass-shadow, 0 8px 32px oklch(0% 0 0 / 0.1));
    --text-main: var(--global-text-primary);
    --text-muted: var(--global-text-secondary);
    --card-hover-bg: var(--global-bg-surface-2);
    /* --accent comes from base.css (identical alias); --input-bg was unused. */
}

body {
    margin: 0;
    font-family: var(--global-font-main);
    color: var(--text-main);
    min-height: 100vh;
    background: var(--global-bg-body);
    overflow-x: hidden;
}

.hub {
    width: 100%;
    max-width: 1080px;
    margin: 0 auto;
    padding: 28px 20px 120px;
}

/* --- Header ------------------------------------------------------- */
.hub-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 20px;
}

.hub-head h1 {
    font-size: 1.65rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin: 4px 0 2px;
}

.hub-sub {
    color: var(--text-muted);
    font-size: 0.88rem;
    margin: 0;
    max-width: 44ch;
}

/* --- N-Back hero (flagship conversion focus) --------------------- */
.hero {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.8fr);
    align-items: center;
    gap: 24px;
    padding: 28px;
    margin-bottom: 22px;
    border-radius: 24px;
    border: 1px solid color-mix(in oklab, var(--accent) 34%, var(--glass-border));
    background:
        radial-gradient(120% 150% at 0% 0%, color-mix(in oklab, var(--accent) 18%, transparent), transparent 58%),
        var(--glass-surface);
    overflow: hidden;
    cursor: pointer;
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.hero:hover {
    border-color: color-mix(in oklab, var(--accent) 55%, var(--glass-border));
}

.hero-glow {
    position: absolute;
    right: -90px;
    top: -90px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: var(--accent);
    filter: blur(90px);
    opacity: 0.22;
    pointer-events: none;
}

.hero-main {
    position: relative;
    z-index: 1;
    min-width: 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--fs-2xs);
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-soft);
    border: 1px solid color-mix(in oklab, var(--accent) 32%, transparent);
    padding: 5px 11px;
    border-radius: var(--r-pill);
}

.hero-title {
    font-size: clamp(2.2rem, 6vw, 3.1rem);
    font-weight: 900;
    letter-spacing: -0.045em;
    line-height: 0.95;
    margin: 14px 0 8px;
}

.hero-tagline {
    margin: 0 0 14px;
    color: var(--text-muted);
    font-size: var(--fs-md);
    line-height: 1.55;
    max-width: 46ch;
}

.hero-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
}

.chip-link {
    text-decoration: none;
    cursor: pointer;
    transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.chip-link:hover,
.chip-link:focus-visible {
    color: var(--accent);
    border-color: color-mix(in oklab, var(--accent) 40%, transparent);
    background: var(--accent-soft);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.hero-cta {
    padding: 15px 26px;
    font-size: var(--fs-lg);
    font-weight: 800;
}

.hero-stat {
    margin-top: 12px;
    font-size: var(--fs-sm);
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

.hero-stat strong {
    color: var(--text-main);
    font-weight: 800;
}

.hero-visual {
    position: relative;
    z-index: 1;
    display: grid;
    place-items: center;
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    width: min(210px, 60vw);
    aspect-ratio: 1;
    padding: 14px;
    border-radius: 22px;
    background: color-mix(in oklab, var(--bg-surface-2) 78%, transparent);
    border: 1px solid var(--border);
}

.hero-grid span {
    border-radius: 10px;
    background: var(--bg-surface-2);
    border: 1px solid var(--border);
}

.hero-grid span.on {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-soft), 0 10px 26px var(--accent-glow);
    animation: hero-pulse 2.4s var(--ease) infinite;
}

@keyframes hero-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(0.93); opacity: 0.82; }
}

@media (prefers-reduced-motion: reduce) {
    .hero-grid span.on { animation: none; }
}

/* --- Today panel -------------------------------------------------- */
.today {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 14px;
    margin-bottom: 28px;
}

.today-card {
    background: var(--glass-surface);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 20px;
    backdrop-filter: blur(16px);
}

.today-index {
    display: flex;
    align-items: center;
    gap: 18px;
}

.ring-wrap {
    width: 78px;
    height: 78px;
    position: relative;
    flex-shrink: 0;
}

.ring-wrap svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.ring-wrap .ring-val {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    font-variant-numeric: tabular-nums;
}

.today-label {
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin: 2px 0 3px;
}

.today-trend {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.45;
}

.today-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    flex-wrap: wrap;
}

/* Protocol */
.protocol-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
}

.protocol-steps {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 14px;
}

.protocol-step {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    background: var(--bg-surface-2);
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 0.85rem;
}

.protocol-step .step-n {
    width: 20px;
    height: 20px;
    border-radius: 6px;
    background: var(--accent);
    color: #fff;
    display: grid;
    place-items: center;
    font-size: 0.68rem;
    font-weight: 800;
    flex-shrink: 0;
}

.protocol-step .step-name {
    flex: 1;
    font-weight: 700;
}

.protocol-step .step-min {
    color: var(--text-muted);
    font-size: 0.76rem;
    font-variant-numeric: tabular-nums;
}

.protocol-step.done {
    opacity: 0.6;
}

/* --- Library ------------------------------------------------------ */
.library-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.library-desc {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.55;
    margin: 0 0 16px;
    max-width: 66ch;
}

.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 10px;
}

.game-grid[hidden] {
    display: none;
}

/* --- Game tile (data first, decoration last) --------------------- */
.glass-card {
    position: relative;
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr) auto auto;
    align-items: center;
    gap: 12px;
    padding: 13px 14px;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    background: var(--glass-surface);
    cursor: pointer;
    text-align: left;
    transition: border-color 0.18s ease, background-color 0.18s ease, transform 0.18s ease;
}

.glass-card:hover {
    background: var(--card-hover-bg);
    border-color: var(--accent);
}

.glass-card:active {
    transform: scale(0.99);
}

.tile-icon {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    background: var(--bg-surface-2);
    color: var(--accent);
}

.tile-icon svg {
    width: 26px;
    height: 26px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.6;
}

.tile-icon svg[fill="currentColor"] {
    fill: currentColor;
    stroke: none;
}

.tile-body {
    min-width: 0;
}

.tile-title {
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tile-meta {
    margin-top: 2px;
    font-size: 0.74rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Right-aligned numeric readout — the data is the point */
.tile-stat-box {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    line-height: 1.1;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.tile-stat-val {
    font-size: 1rem;
    font-weight: 800;
}

.tile-stat-val sup {
    font-size: 0.6em;
    font-weight: 700;
}

.tile-stat-lbl {
    font-size: 0.66rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 1px;
}

.tile-start {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    opacity: 0;
    transform: translateX(4px);
    transition: opacity 0.18s ease, transform 0.18s ease, background-color 0.18s ease, color 0.18s ease;
}

.tile-start svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.glass-card:hover .tile-start,
.glass-card:focus-within .tile-start {
    opacity: 1;
    transform: none;
}

.tile-start:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.tile-today {
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 0.7rem;
}

@media (hover: none) {
    .tile-start {
        opacity: 1;
        transform: none;
    }
}

@media (max-width: 860px) {
    .today {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 18px;
        padding: 22px 18px;
    }

    .hero-title {
        margin-top: 12px;
    }

    .hero-grid {
        width: 128px;
        gap: 7px;
        padding: 10px;
        border-radius: 16px;
    }

    .hero-cta {
        flex: 1;
    }
}

@media (max-width: 560px) {
    .hub {
        padding: 18px 14px 110px;
    }

    .hub-head {
        align-items: flex-start;
        flex-direction: column;
    }

    .hub-head h1 {
        font-size: 1.4rem;
    }

    .game-grid {
        grid-template-columns: 1fr;
    }

    .tile-title {
        white-space: normal;
    }
}

/* iOS install modal */
.ios-install-modal {
    position: fixed;
    inset: 0;
    background: oklch(0% 0 0 / 0.8);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: 20px;
}

.ios-install-modal.show {
    display: flex;
}

.ios-install-content {
    background: var(--glass-surface);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 28px;
    max-width: 400px;
    width: 100%;
    text-align: center;
}

.ios-install-content h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.ios-install-content p {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 16px;
    font-size: 0.9rem;
}

.ios-install-steps {
    text-align: left;
    margin: 16px 0;
    padding: 16px;
    background: var(--bg-surface-2);
    border-radius: 12px;
    font-size: 0.88rem;
}

.ios-install-steps li {
    margin: 10px 0;
}

.ios-close-btn {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 12px 28px;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    font-size: 0.95rem;
}