:root {
    --bg: #14181d;
    --panel: #1e242b;
    --line: #323b45;
    --text: #eef1f4;
    --muted: #9aa5b1;
    --accent: #3fae5a;
    --agent: #2f9e4f;
    --assassin: #0a0a0a;
    --bystander: #d9c7a3;
    --warn: #f0b34a;
}

* {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    -webkit-tap-highlight-color: transparent;
}

main {
    max-width: 560px;
    margin: 0 auto;
    padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(20px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
}

[hidden] {
    display: none !important;
}

h1 {
    margin: 0;
    font-size: 1.5rem;
}

h2 {
    margin: 0 0 4px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
}

header {
    margin-bottom: 14px;
}

.sub {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 0.92rem;
}

.center {
    text-align: center;
}

.notice {
    margin: 0 0 14px;
    padding: 10px 12px;
    border: 1px solid var(--warn);
    border-radius: 10px;
    color: var(--warn);
}

/* ---------- Setup ---------- */

.group {
    margin-bottom: 14px;
    padding: 12px 14px 4px;
    background: var(--panel);
    border-radius: 14px;
}

.field {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    border-top: 1px solid var(--line);
}

.group h2 + .field {
    border-top: 0;
}

.field-text {
    flex: 1;
    min-width: 0;
}

.field-label {
    display: block;
}

.field-hint {
    display: block;
    color: var(--muted);
    font-size: 0.82rem;
}

.stepper {
    display: flex;
    align-items: center;
    flex: none;
}

.stepper output {
    width: 2.4em;
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.stepper button {
    width: 46px;
    height: 46px;
    padding: 0;
    border-radius: 50%;
    font-size: 1.5rem;
    line-height: 1;
}

.summary {
    margin: 0 0 14px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    text-align: center;
}

.summary strong {
    color: var(--accent);
    font-size: 1.15rem;
}

.footnote {
    margin: 22px 0 0;
    color: var(--muted);
    font-size: 0.78rem;
    text-align: center;
}

/* ---------- Buttons ---------- */

button {
    min-height: 48px;
    padding: 0 18px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--panel);
    color: var(--text);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    touch-action: manipulation;
}

button.primary {
    border-color: var(--accent);
    background: var(--accent);
    color: #06210e;
}

button:disabled {
    opacity: 0.35;
    cursor: default;
}

button:focus-visible {
    outline: 3px solid #8ecbff;
    outline-offset: 2px;
}

.actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* ---------- Card ---------- */

.table {
    margin: 0 auto 12px;
}

.edge {
    margin: 6px 0;
    color: var(--muted);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-align: center;
    text-transform: uppercase;
}

#grid {
    display: grid;
    grid-template-columns: repeat(var(--cols), 1fr);
    gap: clamp(3px, 1.2vw, 8px);
    /* Fill the width, but never grow so tall that the buttons leave the screen. */
    width: min(100%, calc((100dvh - 330px) * var(--cols) / var(--rows)));
    min-width: min(100%, 150px);
    margin: 0 auto;
    padding: clamp(6px, 2vw, 12px);
    background: var(--panel);
    border-radius: 14px;
}

.cell {
    aspect-ratio: 1;
    border-radius: 12%;
}

.agent {
    background:
        radial-gradient(circle, transparent 0 24%, rgba(255, 255, 255, 0.92) 26% 36%, transparent 38%),
        var(--agent);
}

.assassin {
    background:
        linear-gradient(45deg, transparent 44%, #fff 45% 55%, transparent 56%),
        linear-gradient(-45deg, transparent 44%, #fff 45% 55%, transparent 56%),
        var(--assassin);
    box-shadow: inset 0 0 0 1px #555;
}

.bystander {
    background: var(--bystander);
}

.legend {
    display: flex;
    justify-content: center;
    gap: 18px;
    margin: 0;
    padding: 0;
    list-style: none;
    font-size: 0.9rem;
}

.legend li {
    display: flex;
    align-items: center;
    gap: 6px;
}

.swatch {
    width: 22px;
    height: 22px;
    border-radius: 5px;
}

#card .actions {
    margin-top: 14px;
}

/* ---------- QR dialog ---------- */

dialog {
    width: min(100vw - 24px, 460px);
    padding: 18px;
    border: 0;
    border-radius: 18px;
    background: var(--panel);
    color: var(--text);
}

dialog::backdrop {
    background: rgba(0, 0, 0, 0.8);
}

dialog h2 {
    margin-bottom: 12px;
    font-size: 1.1rem;
    letter-spacing: 0;
    text-align: center;
    text-transform: none;
    color: var(--text);
}

/* Always dark on white so any camera can read it. */
#qr {
    padding: 14px;
    background: #fff;
    border-radius: 12px;
}

#qr svg {
    display: block;
    width: 100%;
    height: auto;
}

dialog .actions {
    margin-top: 14px;
}