:root {
    --bg: #0e0e12;
    --bg-elev: #181820;
    --bg-elev-2: #20202a;
    --border: #2a2a36;
    --border-strong: #3a3a48;
    --text: #ececf2;
    --text-muted: #9090a0;
    --text-faint: #606070;
    --accent: #7c8cff;
    --accent-hover: #9aa5ff;
    --accent-fg: #0e0e12;
    --success: #5cd49a;
    --danger: #ff7a85;
    --warning: #f0c674;
    --radius: 12px;
    --radius-sm: 6px;
    --shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
    --transition: 150ms cubic-bezier(0.2, 0, 0, 1);
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.55;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover { color: var(--accent-hover); }

h1, h2, h3 {
    margin: 0 0 0.5em;
    line-height: 1.2;
    font-weight: 600;
}
h1 { font-size: 1.75rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.05rem; }

p { margin: 0 0 0.8em; }
p:last-child { margin-bottom: 0; }

.muted { color: var(--text-muted); }
.faint { color: var(--text-faint); }
.small { font-size: 0.875rem; }
.error { color: var(--danger); }
.success { color: var(--success); }

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    position: sticky;
    top: 0;
    z-index: 10;
}
.brand {
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.01em;
}
.brand:hover { color: var(--text); }

.lang select {
    background: var(--bg-elev);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.6rem;
    font-size: 0.85rem;
    cursor: pointer;
    transition: border-color var(--transition);
}
.lang select:hover { border-color: var(--border-strong); }
.lang select:focus { outline: none; border-color: var(--accent); }

main {
    max-width: 720px;
    margin: 0 auto;
    padding: 2rem 1.25rem 4rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.card {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}
.card.subtle {
    background: transparent;
    box-shadow: none;
    padding: 0.75rem 1.5rem;
}
.card.hero h1 {
    font-size: 2rem;
    background: linear-gradient(135deg, var(--text), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.stack { display: flex; flex-direction: column; gap: 0.9rem; }
.row { display: flex; flex-direction: row; align-items: center; gap: 0.6rem; flex-wrap: wrap; }

label {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}
label > span { padding-left: 0.1rem; }

input[type="text"],
input[type="number"],
input[type="url"] {
    background: var(--bg-elev-2);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.7rem 0.85rem;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition), background var(--transition);
}
input:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--bg-elev);
}

button {
    background: var(--bg-elev-2);
    color: var(--text);
    border: 1px solid var(--border-strong);
    padding: 0.7rem 1.1rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
}
button:hover:not(:disabled) {
    background: var(--bg-elev);
    border-color: var(--accent);
}
button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
button.primary {
    background: var(--accent);
    color: var(--accent-fg);
    border-color: var(--accent);
    font-weight: 600;
}
button.primary:hover:not(:disabled) {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}
button.ghost {
    background: transparent;
    border-color: var(--border);
}
button.danger { border-color: var(--danger); color: var(--danger); }

.room-code {
    background: var(--bg-elev-2);
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
    font-family: ui-monospace, "JetBrains Mono", "Fira Code", Menlo, monospace;
    font-size: 1.05rem;
    letter-spacing: 0.1em;
    border: 1px solid var(--border);
}
.room-code-line {
    display: flex; align-items: center; gap: 0.5rem;
}

.share-box {
    display: flex; gap: 0.5rem; align-items: stretch;
    background: var(--bg-elev-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.4rem;
}
.share-box input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text);
    font-family: ui-monospace, monospace;
    font-size: 0.9rem;
}
.share-box input:focus { background: transparent; }
.share-box button { white-space: nowrap; }

.player-list {
    list-style: none;
    margin: 0; padding: 0;
    display: flex; flex-wrap: wrap; gap: 0.5rem;
}
.player-list li {
    background: var(--bg-elev-2);
    border: 1px solid var(--border);
    padding: 0.4rem 0.85rem;
    border-radius: 999px;
    display: inline-flex; align-items: center; gap: 0.5rem;
    font-size: 0.95rem;
}
.player-list li.is-me {
    border-color: var(--accent);
    color: var(--accent-hover);
}
.player-list li.host::before {
    content: "★"; color: var(--warning);
    font-size: 0.85rem;
}
.player-list li.submitted {
    border-color: var(--success);
    color: var(--success);
}
.player-badge {
    background: var(--accent);
    color: var(--accent-fg);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.1rem 0.5rem;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.video-frame {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: black;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}
.video-frame iframe,
.video-frame > div {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    border: 0;
}

.now-playing-meta {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    margin-top: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.vote-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.5rem;
    margin-top: 0.75rem;
}
.vote-grid button {
    width: 100%;
    text-align: center;
    padding: 0.85rem 0.5rem;
    background: var(--bg-elev-2);
    border-color: var(--border);
}
.vote-grid button.selected {
    background: var(--accent);
    color: var(--accent-fg);
    border-color: var(--accent);
}

.timer {
    font-variant-numeric: tabular-nums;
    color: var(--accent-hover);
    font-weight: 600;
}

.thumbnail-strip {
    display: flex; flex-direction: column; gap: 0.6rem;
}
.thumbnail-row {
    display: flex; gap: 0.85rem; align-items: center;
    background: var(--bg-elev-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
}
.thumbnail-row img {
    width: 96px; height: 54px; object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
    background: black;
}
.thumbnail-row .thumb-meta {
    flex: 1;
    display: flex; flex-direction: column; gap: 0.15rem;
    min-width: 0;
}
.thumbnail-row .by {
    font-weight: 600;
}
.thumbnail-row.correct { border-color: var(--success); }
.thumbnail-row.incorrect { border-color: var(--danger); }
.thumbnail-row.mine { border-style: dashed; }

.ranking {
    list-style: none;
    margin: 0; padding: 0;
    display: flex; flex-direction: column; gap: 0.5rem;
}
.ranking li {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1rem; align-items: center;
    background: var(--bg-elev-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
}
.ranking li.rank-1 {
    background: linear-gradient(135deg, rgba(124, 140, 255, 0.15), var(--bg-elev-2));
    border-color: var(--accent);
}
.ranking .rank-num {
    font-weight: 700; font-size: 1.1rem;
    color: var(--text-muted);
    min-width: 1.75rem;
}
.ranking .rank-1 .rank-num { color: var(--accent-hover); }
.ranking .points {
    font-variant-numeric: tabular-nums;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.toast {
    position: fixed;
    bottom: 1.5rem; left: 50%;
    transform: translateX(-50%);
    background: var(--bg-elev-2);
    border: 1px solid var(--border-strong);
    color: var(--text);
    padding: 0.7rem 1.1rem;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    z-index: 100;
    animation: toast-in 0.2s ease;
}
.toast.error { border-color: var(--danger); }
.toast.success { border-color: var(--success); }
@keyframes toast-in {
    from { opacity: 0; transform: translate(-50%, 8px); }
    to { opacity: 1; transform: translate(-50%, 0); }
}

.spinner {
    display: inline-block;
    width: 1rem; height: 1rem;
    border: 2px solid var(--border-strong);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

.divider {
    height: 1px; background: var(--border);
    margin: 1rem 0;
}

@media (max-width: 540px) {
    main { padding: 1rem 0.85rem 3rem; }
    .card { padding: 1.1rem; }
    .vote-grid { grid-template-columns: repeat(2, 1fr); }
    .topbar { padding: 0.75rem 1rem; }
}