/* Design direction: Dark arcade selector (itch.io × Game Boy shelf) · palette: #0F0F0F surface, #1A1A1A card, #E8890C amber accent, #F5F0E8 text · type: Space Grotesk display + Inter body */

/* ================================================================
   TOKENS
================================================================ */
:root {
    --bg:          #0F0F0F;
    --surface:     #1A1A1A;
    --surface-2:   #222222;
    --rule:        #2A2A2A;
    --rule-soft:   #1F1F1F;
    --ink:         #F5F0E8;
    --ink-soft:    #B0A898;
    --ink-muted:   #6A6560;
    --accent:      #E8890C;
    --accent-dim:  rgba(232, 137, 12, 0.12);
    --accent-hover: #F49820;
    --danger:      #C0392B;
    --success:     #27AE60;

    --diff-easy:   #1A3A28;
    --diff-easy-ink: #52D68A;
    --diff-med:    #3A2800;
    --diff-med-ink: #F5A623;
    --diff-hard:   #3A1515;
    --diff-hard-ink: #E06060;

    --radius:      10px;
    --radius-sm:   6px;
    --radius-lg:   14px;
    --transition:  0.18s cubic-bezier(0.4, 0, 0.2, 1);

    /* spacing grid: multiples of 8 */
    --sp1: 8px;
    --sp2: 16px;
    --sp3: 24px;
    --sp4: 32px;
    --sp5: 40px;
    --sp6: 48px;
    --sp8: 64px;

    --font-display: 'Space Grotesk', system-ui, sans-serif;
    --font-body:    'Inter', system-ui, sans-serif;
    --mono:         'JetBrains Mono', 'Fira Mono', monospace;
}

/* ================================================================
   RESET
================================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--ink);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
img { display: block; max-width: 100%; }
input, button, textarea { font-family: inherit; }

/* ================================================================
   NAV
================================================================ */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 15, 15, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--rule);
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--sp3);
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp2);
}
.brand {
    display: flex;
    align-items: center;
    gap: var(--sp1);
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 600;
    flex-shrink: 0;
}
.brand svg { color: var(--accent); }
.brand-dot { color: var(--accent); }

.nav-meta {
    display: flex;
    align-items: center;
    gap: var(--sp2);
}
.game-count-pill {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink-muted);
    background: var(--surface);
    border: 1px solid var(--rule);
    border-radius: 20px;
    padding: 3px 10px;
}
.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--ink-soft);
    padding: 6px var(--sp1);
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: var(--ink); background: var(--surface); }
.nav-link-accent {
    color: var(--accent);
    border: 1px solid rgba(232, 137, 12, 0.3);
    padding: 5px 12px;
}
.nav-link-accent:hover { background: var(--accent-dim); color: var(--accent-hover); }
.nav-link-label { display: none; }
@media (min-width: 560px) { .nav-link-label { display: inline; } }

/* ================================================================
   HERO
================================================================ */
.hero {
    border-bottom: 1px solid var(--rule);
    padding: var(--sp8) 0 var(--sp6);
}
.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--sp3);
}
.hero-eyebrow {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: var(--sp2);
}
.hero-title {
    font-family: var(--font-display);
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: var(--ink);
    margin-bottom: var(--sp2);
}
.hero-sub {
    font-size: 16px;
    color: var(--ink-soft);
    max-width: 460px;
    line-height: 1.6;
    margin-bottom: var(--sp4);
}
.hero-actions {
    display: flex;
    align-items: center;
    gap: var(--sp3);
    flex-wrap: wrap;
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: #0F0F0F;
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.01em;
    padding: 10px 20px;
    border-radius: var(--radius);
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    flex-shrink: 0;
}
.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px -4px rgba(232, 137, 12, 0.4);
}
.btn-primary:active { transform: translateY(0); }

.filter-row {
    display: flex;
    gap: var(--sp1);
    flex-wrap: wrap;
}
.filter-chip {
    font-size: 13px;
    font-weight: 500;
    color: var(--ink-soft);
    background: var(--surface);
    border: 1px solid var(--rule);
    padding: 6px 14px;
    border-radius: 20px;
    transition: color var(--transition), background var(--transition), border-color var(--transition);
}
.filter-chip:hover { color: var(--ink); border-color: var(--ink-muted); }
.filter-chip.active {
    color: var(--accent);
    background: var(--accent-dim);
    border-color: rgba(232, 137, 12, 0.4);
}

/* ================================================================
   SEARCH
================================================================ */
.search-bar-section {
    border-bottom: 1px solid var(--rule);
    padding: var(--sp3) 0;
}
.search-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--sp3);
    position: relative;
    display: flex;
    align-items: center;
}
.search-icon {
    position: absolute;
    left: calc(var(--sp3) + 14px);
    color: var(--ink-muted);
    pointer-events: none;
    flex-shrink: 0;
}
.search-input {
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--rule);
    border-radius: var(--radius);
    color: var(--ink);
    font-size: 14px;
    font-family: var(--font-body);
    padding: 10px 44px 10px 44px;
    transition: border-color var(--transition), box-shadow var(--transition);
    -webkit-appearance: none;
    appearance: none;
}
.search-input::placeholder { color: var(--ink-muted); }
.search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}
.search-input::-webkit-search-cancel-button { display: none; }
.search-clear {
    position: absolute;
    right: calc(var(--sp3) + 10px);
    color: var(--ink-muted);
    padding: 4px;
    border-radius: 4px;
    line-height: 0;
    transition: color var(--transition);
}
.search-clear:hover { color: var(--ink); }

/* ================================================================
   CATALOG
================================================================ */
.catalog-section {
    padding: var(--sp5) 0 var(--sp8);
}
.catalog-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--sp3);
}
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--sp3);
}

/* ================================================================
   GAME CARD
================================================================ */
.game-card {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--rule);
    border-radius: var(--radius-lg);
    padding: var(--sp3);
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
    animation: card-in 0.4s ease-out both;
}
@keyframes card-in {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* accent left bar — hidden until hover */
.game-card::after {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--accent);
    border-radius: 3px 0 0 3px;
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}
.game-card:hover::after { transform: scaleY(1); }
.game-card:hover {
    border-color: rgba(232, 137, 12, 0.3);
    transform: translateY(-3px);
    box-shadow: 0 12px 32px -8px rgba(0, 0, 0, 0.5);
}

.card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--sp2);
}
.card-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-2);
    border: 1px solid var(--rule);
    border-radius: var(--radius-sm);
    color: var(--accent);
    flex-shrink: 0;
}
.card-icon svg { width: 20px; height: 20px; }
.game-difficulty {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: 4px;
}
.difficulty-easy  { background: var(--diff-easy);  color: var(--diff-easy-ink);  }
.difficulty-medium { background: var(--diff-med); color: var(--diff-med-ink); }
.difficulty-hard  { background: var(--diff-hard);  color: var(--diff-hard-ink);  }

.game-title {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--ink);
    margin-bottom: 6px;
    line-height: 1.3;
}
.game-description {
    font-size: 13px;
    color: var(--ink-soft);
    line-height: 1.55;
    flex: 1;
    margin-bottom: var(--sp3);
}

.play-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    width: 100%;
    padding: 9px 0;
    background: transparent;
    border: 1px solid var(--rule);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    color: var(--ink-soft);
    transition: background var(--transition), border-color var(--transition), color var(--transition);
    margin-top: auto;
}
.game-card:hover .play-btn {
    background: var(--accent-dim);
    border-color: rgba(232, 137, 12, 0.4);
    color: var(--accent);
}
.play-btn svg { width: 13px; height: 13px; }

/* ================================================================
   EMPTY STATE
================================================================ */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp2);
    padding: var(--sp8) var(--sp3);
    text-align: center;
    color: var(--ink-muted);
}
.empty-state svg { color: var(--ink-muted); opacity: 0.5; }
.empty-state h3 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    color: var(--ink-soft);
}
.empty-state p { font-size: 14px; color: var(--ink-muted); }
.empty-reset {
    background: none;
    border: none;
    color: var(--accent);
    font-size: inherit;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 3px;
}
.empty-reset:hover { color: var(--accent-hover); }

/* ================================================================
   FOOTER
================================================================ */
.site-foot {
    border-top: 1px solid var(--rule);
    padding: var(--sp5) 0;
}
.foot-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--sp3);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp2);
    text-align: center;
}
.foot-copy {
    font-size: 13px;
    color: var(--ink-muted);
}
.foot-copy a { color: var(--ink-soft); text-decoration: underline; text-underline-offset: 3px; }
.foot-copy a:hover { color: var(--ink); }
.foot-social {
    display: flex;
    gap: var(--sp2);
}
.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--surface);
    border: 1px solid var(--rule);
    color: var(--ink-muted);
    transition: color var(--transition), border-color var(--transition), background var(--transition);
}
.social-link:hover { color: var(--accent); border-color: rgba(232, 137, 12, 0.4); background: var(--accent-dim); }
.foot-attr { font-size: 12px; color: var(--ink-muted); }
.foot-attr strong { color: var(--ink-soft); font-weight: 600; }

/* ================================================================
   LOADING OVERLAY
================================================================ */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 15, 15, 0.88);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 500;
    backdrop-filter: blur(4px);
}
.loading-overlay[aria-hidden="false"] { display: flex; }
.loading-inner { display: flex; flex-direction: column; align-items: center; gap: var(--sp2); }
.loading-ring {
    width: 48px; height: 48px;
    color: var(--accent);
    animation: spin 0.9s linear infinite;
}
.loading-ring svg { width: 100%; height: 100%; }
.loading-arc { stroke: var(--accent); }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--ink-soft);
    letter-spacing: 0.04em;
}

/* ================================================================
   SUPPORT FAB
================================================================ */
.support-fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 200;
    width: 64px; height: 64px;
    border-radius: 50%;
    background: var(--accent);
    color: #0F0F0F;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px -4px rgba(232, 137, 12, 0.5);
    transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}
.support-fab:hover {
    background: var(--accent-hover);
    transform: translateY(-2px) scale(1.04);
    box-shadow: 0 8px 28px -4px rgba(232, 137, 12, 0.6);
}
.support-fab:active { transform: translateY(0) scale(1); }
.support-fab-arc { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.support-fab-text {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
    fill: #0F0F0F;
    font-family: var(--font-display);
}
.support-fab-icon { position: relative; width: 18px; height: 18px; z-index: 1; transition: transform 0.15s ease; }
.support-fab:hover .support-fab-icon { transform: rotate(-6deg) scale(1.1); }

/* ================================================================
   SUPPORT DIALOG
================================================================ */
.support-dialog {
    position: fixed;
    inset: 0;
    z-index: 400;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--sp3);
}
.support-dialog.open { display: flex; animation: support-fade-in 0.2s ease-out; }
.support-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    cursor: pointer;
}
.support-panel {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--rule);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 360px;
    box-shadow: 0 24px 64px -16px rgba(0, 0, 0, 0.7);
    animation: support-slide-up 0.25s ease-out;
}
.support-close {
    position: absolute;
    top: var(--sp2);
    right: var(--sp2);
    width: 32px; height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--ink-muted);
    border: 1px solid transparent;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.support-close:hover { background: var(--surface-2); color: var(--ink); border-color: var(--rule); }
.support-close svg { width: 16px; height: 16px; }
.support-body { padding: var(--sp4) var(--sp3) var(--sp3); text-align: center; }
.support-badge {
    width: 52px; height: 52px;
    background: var(--accent-dim);
    border: 1px solid rgba(232, 137, 12, 0.25);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--sp2);
    color: var(--accent);
}
.support-badge svg { width: 24px; height: 24px; overflow: visible; }
.support-title {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}
.support-sub { margin: 0 auto; max-width: 280px; font-size: 13px; line-height: 1.6; color: var(--ink-soft); }
.support-amounts {
    margin-top: var(--sp3);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp1);
}
.support-amount {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 12px var(--sp1);
    background: var(--surface-2);
    border: 1px solid var(--rule);
    border-radius: var(--radius);
    text-decoration: none;
    transition: background var(--transition), border-color var(--transition);
}
.support-amount:hover { background: var(--accent-dim); border-color: rgba(232, 137, 12, 0.4); }
.support-amount:hover .support-amount-label { color: var(--accent); }
.support-amount-label { font-size: 11px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-muted); }
.support-amount-value { font-family: var(--mono); font-size: 15px; font-weight: 600; color: var(--ink); }
.support-qr-wrap { margin-top: var(--sp2); display: flex; flex-direction: column; align-items: center; gap: 8px; }
.support-qr-label { margin: 0; font-size: 10px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-muted); }
.support-qr { padding: 6px; border: 1px solid var(--rule); border-radius: 12px; background: #ffffff; }
.support-qr img { width: 180px; height: auto; border-radius: 6px; }
.support-copy {
    margin-top: var(--sp2);
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--surface-2);
    border: 1px solid var(--rule);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--ink-soft);
    width: 100%;
    justify-content: space-between;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition);
}
.support-copy:hover { background: var(--surface); border-color: var(--ink-muted); }
.support-copy svg { width: 14px; height: 14px; color: var(--ink-muted); }
.support-copy.copied svg { color: var(--success); }
.support-hint { margin: var(--sp1) 0 0; font-size: 10.5px; color: var(--ink-muted); }
.support-foot {
    margin-top: var(--sp2);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    font-size: 12px;
    color: var(--ink-muted);
}
.support-foot svg { width: 12px; height: 12px; color: var(--accent); }
.support-foot strong { font-weight: 600; color: var(--ink-soft); }

@keyframes support-fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes support-slide-up { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

/* ================================================================
   RESPONSIVE
================================================================ */
@media (max-width: 768px) {
    .hero { padding: var(--sp6) 0 var(--sp5); }
    .hero-actions { gap: var(--sp2); }
    .games-grid { grid-template-columns: 1fr 1fr; gap: var(--sp2); }
    .game-card { padding: var(--sp2); }
    .game-title { font-size: 15px; }
    .game-description { font-size: 12px; }
}
@media (max-width: 520px) {
    .games-grid { grid-template-columns: 1fr; }
    .hero-title { font-size: 36px; }
    .filter-row { gap: 6px; }
    .support-fab { right: 14px; bottom: 14px; width: 56px; height: 56px; }
    .support-panel { max-width: 100%; }
}