:root {
    color-scheme: dark;
    --bg: #07111f;
    --card: rgba(13, 25, 43, 0.86);
    --card-strong: rgba(20, 39, 66, 0.96);
    --text: #f8fafc;
    --muted: #94a3b8;
    --line: rgba(148, 163, 184, 0.22);
    --accent: #38bdf8;
    --accent-strong: #f59e0b;
    --danger: #f43f5e;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.5;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(56, 189, 248, 0.22), transparent 26rem),
        radial-gradient(circle at top right, rgba(245, 158, 11, 0.16), transparent 24rem),
        var(--bg);
    color: var(--text);
}

button,
input {
    font: inherit;
}

button {
    border: 0;
    cursor: pointer;
}

.app-shell {
    display: grid;
    gap: 1.25rem;
    width: min(100%, 34rem);
    margin: 0 auto;
    padding: calc(1.25rem + env(safe-area-inset-top, 0px)) 1rem calc(6rem + env(safe-area-inset-bottom, 0px));
}

.hero-card,
.card {
    border: 1px solid var(--line);
    border-radius: 1.5rem;
    background: var(--card);
    box-shadow: 0 1.5rem 5rem rgba(0, 0, 0, 0.28);
    backdrop-filter: blur(1rem);
}

.hero-card {
    position: sticky;
    top: calc(0.75rem + env(safe-area-inset-top, 0px));
    z-index: 2;
    padding: 1.25rem;
}

.hero-card__topline,
.card__header,
.price-row,
.queue-row,
.leaderboard li,
.hero-grid,
.status-grid {
    display: flex;
    align-items: center;
}

.hero-card__topline {
    gap: 0.5rem;
    color: var(--muted);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.live-dot {
    width: 0.65rem;
    height: 0.65rem;
    border-radius: 999px;
    background: #22c55e;
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
    animation: pulse 1.8s infinite;
}

.hero-card h1 {
    margin: 0.65rem 0 1rem;
    font-size: clamp(2.1rem, 11vw, 4.4rem);
    line-height: 0.9;
    letter-spacing: -0.08em;
}

.hero-grid,
.status-grid {
    gap: 0.75rem;
}

.hero-grid > div,
.status-grid > div {
    flex: 1;
    min-width: 0;
    padding: 0.85rem;
    border-radius: 1rem;
    background: rgba(255, 255, 255, 0.06);
}

.label {
    display: block;
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero-grid strong,
.status-grid strong {
    display: block;
    margin-top: 0.2rem;
    overflow: hidden;
    font-size: 1.25rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.card {
    margin: 0;
    padding: 1.1rem;
}

.card__header {
    display: block;
    margin-bottom: 1rem;
}

.card h2,
.leaderboard h3 {
    margin: 0;
}

.eyebrow {
    margin: 0 0 0.25rem;
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.env-badge {
    display: inline-block;
    margin-left: auto;
    padding: 0.1rem 0.45rem;
    border-radius: 999px;
    background: #991b1b;
    color: #fee2e2;
    font-size: 0.7rem;
    font-weight: 800;
}

.join-form,
.operator-card {
    display: grid;
    gap: 0.9rem;
}

label span,
legend {
    display: block;
    margin-bottom: 0.35rem;
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 700;
}

small {
    color: var(--muted);
    font-weight: 500;
}

input {
    box-sizing: border-box;
    width: 100%;
    min-height: 3.15rem;
    border: 1px solid var(--line);
    border-radius: 0.95rem;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
    padding: 0 0.95rem;
    outline: none;
}

input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 0.2rem rgba(56, 189, 248, 0.14);
}

fieldset {
    margin: 0;
    padding: 0;
    border: 0;
}

.challenge-list {
    display: grid;
    gap: 0.55rem;
}

.challenge-pill {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-height: 3rem;
    padding: 0 0.85rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
}

.challenge-pill input {
    width: 1.1rem;
    min-height: auto;
}

.challenge-pill span {
    margin: 0;
    color: var(--text);
}

.price-row {
    justify-content: space-between;
    padding: 0.85rem 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.price-row strong {
    font-size: 1.6rem;
}

.primary-action,
.secondary-action,
.danger-action,
.operator-actions button {
    width: 100%;
    min-height: 3.2rem;
    border-radius: 1rem;
    color: #07111f;
    font-weight: 900;
}

.primary-action {
    background: linear-gradient(135deg, var(--accent-strong), #fde047);
}

.secondary-action,
.operator-actions button {
    background: #e0f2fe;
}

.danger-action {
    margin-top: 0.75rem;
    background: var(--danger);
    color: white;
}

.form-note {
    min-height: 1.25rem;
    margin: 0;
    color: var(--muted);
    font-size: 0.86rem;
}

.form-note.is-error {
    color: #fecdd3;
}

.queue-stack,
.leaderboard-stack {
    display: grid;
    gap: 0.65rem;
}

.queue-row {
    grid-template-columns: 5.4rem 1fr auto;
    gap: 0.75rem;
    padding: 0.9rem;
    border: 1px solid var(--line);
    border-radius: 1rem;
    background: rgba(255, 255, 255, 0.05);
    animation: rise 220ms ease-out;
}

.queue-row--current {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.25), rgba(255, 255, 255, 0.06));
}

.queue-row--deck {
    border-color: rgba(56, 189, 248, 0.55);
}

.queue-row span,
.queue-row small {
    color: var(--muted);
    font-weight: 800;
}

.queue-row strong {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.leaderboard {
    padding: 0.9rem;
    border: 1px solid var(--line);
    border-radius: 1rem;
    background: rgba(255, 255, 255, 0.05);
}

.leaderboard h3 {
    margin-bottom: 0.55rem;
    font-size: 1rem;
}

.leaderboard ol {
    display: grid;
    gap: 0.45rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.leaderboard li {
    gap: 0.65rem;
}

.leaderboard li span {
    display: grid;
    width: 1.65rem;
    height: 1.65rem;
    place-items: center;
    border-radius: 999px;
    background: rgba(56, 189, 248, 0.16);
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 900;
}

.leaderboard li strong {
    flex: 1;
}

.leaderboard li em {
    color: var(--accent-strong);
    font-style: normal;
    font-weight: 900;
}

.empty-state {
    margin: 0;
    color: var(--muted);
}

.operator-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

@keyframes pulse {
    70% {
        box-shadow: 0 0 0 0.7rem rgba(34, 197, 94, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
    }
}

@keyframes rise {
    from {
        opacity: 0;
        transform: translateY(0.35rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (min-width: 44rem) {
    .app-shell {
        padding-top: 2rem;
    }
}