/* Game Hub — mobile-first styles. Games may use these tokens (var(--...)) in their own scoped CSS. */
:root {
  --bg: #f6f4ef;
  --surface: #ffffff;
  --surface-2: #efece5;
  --text: #1c1b22;
  --muted: #6b6878;
  --border: #dcd8ce;
  --primary: #4f46e5;
  --primary-text: #ffffff;
  --primary-soft: #e6e4fd;
  --danger: #c62828;
  --danger-soft: #fde8e8;
  --success: #1b8a4b;
  --success-soft: #def5e7;
  --warn: #a15c00;
  --warn-soft: #fdf0d5;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgb(0 0 0 / 6%), 0 4px 16px rgb(0 0 0 / 5%);
  --tap: 44px;
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16161a;
    --surface: #222228;
    --surface-2: #2c2c34;
    --text: #f1f0f5;
    --muted: #a3a1b0;
    --border: #3a3a44;
    --primary: #8b84ff;
    --primary-text: #12121a;
    --primary-soft: #2f2c5c;
    --danger: #ff6b6b;
    --danger-soft: #4a2124;
    --success: #4cd38a;
    --success-soft: #1d3d2b;
    --warn: #ffc15e;
    --warn-soft: #4a3a1a;
    --shadow: 0 1px 2px rgb(0 0 0 / 30%);
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100dvh; background: var(--bg); color: var(--text);
  font: 16px/1.45 var(--font); -webkit-tap-highlight-color: transparent; overflow-x: hidden;
}
h1, h2, h3 { margin: 0; line-height: 1.2; }
h2 { font-size: 1.1rem; }
p { margin: 0; }
a { color: var(--primary); }
img { max-width: 100%; }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.center { text-align: center; }
.inline { display: inline; }
.pad-top { padding-top: 12px; }
.offscreen { position: fixed; left: -9999px; top: 0; opacity: 0; }

/* layout */
.screen { min-height: 100dvh; display: flex; flex-direction: column; }
.center-screen { display: grid; place-items: center; padding: 16px; min-height: 100dvh; }
.content {
  width: 100%; max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px;
  padding: 16px max(16px, var(--safe-right)) calc(24px + var(--safe-bottom)) max(16px, var(--safe-left));
}
.content.narrow { max-width: 480px; }
.stack { display: flex; flex-direction: column; gap: 14px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.hero { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 16px 0 0; }
.splash { display: flex; flex-direction: column; align-items: center; gap: 12px; }

.topbar {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 8px;
  padding: calc(6px + var(--safe-top)) max(8px, var(--safe-right)) 6px max(8px, var(--safe-left));
  background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border); min-height: calc(56px + var(--safe-top));
}
.topbar-logo { display: grid; place-items: center; width: var(--tap); height: var(--tap); }
.topbar-title { flex: 1; min-width: 0; font-size: 1.15rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar-title.small { font-size: 1rem; font-weight: normal; padding-left: 8px; }
.topbar-actions { display: flex; align-items: center; gap: 6px; }

/* controls */
button, input, select, textarea { font: inherit; color: inherit; }
input[type='text'], input[type='password'], input[type='number'], select, textarea {
  width: 100%; min-height: var(--tap); font-size: 16px; /* >= 16px: no iOS zoom */
  padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface);
}
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible, summary:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--primary) 60%, transparent); outline-offset: 2px;
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: var(--tap); padding: 10px 16px;
  border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--surface); color: var(--text);
  font-weight: 600; text-decoration: none; cursor: pointer; touch-action: manipulation; user-select: none; -webkit-user-select: none;
}
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
.btn-danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, var(--border)); }
.btn-block { width: 100%; }
.btn-big { min-height: 56px; font-size: 1.1rem; }
.btn-small { min-height: 36px; padding: 6px 10px; font-size: 0.875rem; }
@media (pointer: coarse) { .btn-small { min-height: var(--tap); } }
.icon-btn {
  display: grid; place-items: center; width: var(--tap); height: var(--tap); border: 0; border-radius: 50%;
  background: transparent; font-size: 1.6rem; color: var(--text); text-decoration: none; cursor: pointer;
}
.chip-btn {
  display: inline-flex; align-items: center; min-height: 36px; padding: 4px 12px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); font-size: 0.875rem; font-weight: 600; text-decoration: none; cursor: pointer;
  max-width: 40vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
@media (pointer: coarse) { .chip-btn { min-height: var(--tap); } }
.actions-row { display: flex; flex-wrap: wrap; gap: 8px; }
.actions-row > .btn { flex: 1 1 140px; }
.row-actions { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 8px; }

.field { display: flex; flex-direction: column; gap: 6px; }
.field-label { font-weight: 600; }
.field-hint { color: var(--muted); font-size: 0.875rem; }
.field-error { color: var(--danger); font-size: 0.875rem; }
.has-error input { border-color: var(--danger); }
.check { display: inline-flex; align-items: center; gap: 8px; min-height: var(--tap); cursor: pointer; }
.check input { width: 22px; height: 22px; accent-color: var(--primary); }

.segmented { display: flex; background: var(--surface-2); border-radius: var(--radius-sm); padding: 3px; gap: 3px; }
.segmented > button {
  flex: 1; min-height: 40px; border: 0; border-radius: 8px; background: transparent; font-weight: 600; cursor: pointer; padding: 6px 8px;
}
.segmented > button.on { background: var(--surface); box-shadow: var(--shadow); color: var(--primary); }

.stepper { align-self: flex-start; display: inline-flex; align-items: stretch; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; background: var(--surface); }
.stepper input, .stepper output { width: 4.5em; border: 0; border-radius: 0; text-align: center; display: grid; place-items: center; min-height: var(--tap); -moz-appearance: textfield; appearance: textfield; }
.stepper input::-webkit-outer-spin-button, .stepper input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.step-btn { width: var(--tap); border: 0; background: var(--surface-2); font-size: 1.3rem; cursor: pointer; }
.step-btn:disabled { opacity: 0.4; }
.number-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.unit { color: var(--muted); }

.switch-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: var(--tap); cursor: pointer; }
.switch-row > span { display: flex; flex-direction: column; gap: 2px; }
.switch { appearance: none; -webkit-appearance: none; flex: none; width: 52px; height: 32px; border-radius: 999px; background: var(--border); position: relative; cursor: pointer; transition: background 0.15s; }
.switch::after { content: ''; position: absolute; top: 3px; left: 3px; width: 26px; height: 26px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgb(0 0 0 / 30%); transition: transform 0.15s; }
.switch:checked { background: var(--primary); }
.switch:checked::after { transform: translateX(20px); }

.toggles { display: flex; flex-wrap: wrap; gap: 6px; }
.toggles-compact { display: grid; grid-template-columns: repeat(auto-fill, minmax(var(--tap), 1fr)); }
.toggle { min-height: var(--tap); min-width: var(--tap); padding: 6px 10px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--surface); font-weight: 600; cursor: pointer; }
.toggle.on { background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
.chips { list-style: none; margin: 0 0 8px; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; align-items: center; gap: 2px; padding-left: 12px; border-radius: 999px; background: var(--primary-soft); font-weight: 600; }
.chip-x { width: 36px; height: 36px; border: 0; background: transparent; font-size: 1.2rem; cursor: pointer; color: inherit; border-radius: 50%; }
@media (pointer: coarse) { .chip-x { width: var(--tap); height: var(--tap); } }
.add-row { display: flex; gap: 8px; }
.add-row input { flex: 1; }

.settings-form { display: flex; flex-direction: column; gap: 16px; }
.settings-group { border: 0; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 16px; }
.settings-group legend { font-weight: 700; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); padding: 0; margin-bottom: 4px; }
.settings-view { margin: 0; display: grid; gap: 8px; }
.settings-view-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.settings-view-row:last-child { border-bottom: 0; }
.settings-view dt { color: var(--muted); }
.settings-view dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }

/* badges */
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 0.75rem; font-weight: 700; white-space: nowrap; vertical-align: middle; }
.badge-open { background: var(--success-soft); color: var(--success); }
.badge-in_game { background: var(--warn-soft); color: var(--warn); }
.badge-finished { background: var(--surface-2); color: var(--muted); }
.badge-host { background: var(--primary-soft); color: var(--primary); }
.badge-off { background: var(--surface-2); color: var(--muted); }

/* lobby list */
.lobby-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.lobby-item {
  display: flex; align-items: center; gap: 12px; padding: 12px; min-height: 64px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border); color: inherit; text-decoration: none; box-shadow: var(--shadow);
}
.lobby-item.disabled { opacity: 0.55; }
.game-icon { width: 44px; height: 44px; border-radius: 10px; flex: none; }
.game-icon.placeholder { display: inline-block; background: var(--surface-2); }
.lobby-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.lobby-name { font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lobby-meta { color: var(--muted); font-size: 0.875rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lobby-side { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.lobby-count { font-weight: 700; font-variant-numeric: tabular-nums; }
.empty { text-align: center; display: flex; flex-direction: column; gap: 6px; padding: 32px 16px; }
.notice { display: flex; align-items: center; gap: 8px; justify-content: space-between; background: var(--warn-soft); }

/* create */
.game-picker { display: flex; flex-direction: column; gap: 8px; }
.game-card {
  display: flex; gap: 12px; align-items: flex-start; text-align: left; padding: 12px; border-radius: var(--radius-sm);
  border: 2px solid var(--border); background: var(--surface); cursor: pointer;
}
.game-card.on { border-color: var(--primary); background: var(--primary-soft); }
.game-card img { border-radius: 8px; flex: none; }
.game-card-text { display: flex; flex-direction: column; gap: 2px; }
.code-input { text-transform: uppercase; letter-spacing: 0.3em; font-size: 1.5rem !important; text-align: center; font-weight: 700; }
.sticky-actions {
  position: sticky; bottom: 0; padding: 12px 0 calc(4px + var(--safe-bottom)); margin-bottom: calc(-1 * var(--safe-bottom));
  background: linear-gradient(to top, var(--bg) 70%, transparent); display: flex; flex-direction: column; gap: 6px;
}

/* lobby room */
.invite-code { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.code { font-size: 2.2rem; letter-spacing: 0.15em; font-variant-numeric: tabular-nums; flex: 1; }
.invite-more summary, details.card > summary { cursor: pointer; min-height: var(--tap); display: flex; align-items: center; font-weight: 600; }
.invite-body { display: flex; flex-direction: column; align-items: center; gap: 12px; padding-top: 8px; }
.qr { width: min(240px, 70vw); height: auto; border-radius: 8px; background: #fff; }
.invite-link { font-size: 0.875rem; color: var(--muted); overflow-wrap: anywhere; text-align: center; user-select: all; }
.players { list-style: none; margin: 12px 0 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.player { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; min-height: var(--tap); }
.player.offline { opacity: 0.6; }
.player-name { flex: 1 1 9em; min-width: 0; overflow-wrap: anywhere; font-weight: 600; }
.player-actions { display: flex; gap: 6px; margin-left: auto; }
.avatar { display: inline-grid; place-items: center; border-radius: 50%; color: #fff; font-weight: 800; flex: none; text-shadow: 0 1px 1px rgb(0 0 0 / 30%); }
.waiting { text-align: center; color: var(--muted); padding: 12px; background: var(--surface); border-radius: var(--radius); border: 1px dashed var(--border); }

/* game */
.screen-game .content { max-width: 960px; }
.topbar-game { min-height: calc(48px + var(--safe-top)); }
.game-content { padding-top: 12px; }
.game-host { min-height: 50vh; }
.finished-bar { display: flex; gap: 8px; flex-wrap: wrap; position: sticky; bottom: 0; padding: 12px 0 calc(4px + var(--safe-bottom)); background: linear-gradient(to top, var(--bg) 70%, transparent); }
.finished-bar > .btn { flex: 1 1 160px; }
.menu { position: relative; }
.menu-pop { position: absolute; right: 0; top: calc(100% + 4px); min-width: 200px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); box-shadow: var(--shadow); padding: 4px; z-index: 20; }
.menu-item { width: 100%; min-height: var(--tap); text-align: left; padding: 8px 12px; border: 0; background: transparent; border-radius: 8px; cursor: pointer; font-weight: 600; }
.menu-item.danger { color: var(--danger); }

/* status layer */
.banner {
  position: fixed; left: 50%; transform: translateX(-50%); top: calc(8px + var(--safe-top)); z-index: 50;
  display: flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; background: var(--text); color: var(--bg);
  font-size: 0.9rem; font-weight: 600; box-shadow: var(--shadow); max-width: calc(100vw - 32px);
}
.spinner { width: 14px; height: 14px; border-radius: 50%; border: 2px solid currentColor; border-right-color: transparent; animation: spin 0.8s linear infinite; flex: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.toast-area { position: fixed; left: 0; right: 0; bottom: calc(16px + var(--safe-bottom)); display: flex; justify-content: center; pointer-events: none; z-index: 60; padding: 0 16px; }
.toast { pointer-events: auto; padding: 10px 16px; border-radius: var(--radius-sm); background: var(--text); color: var(--bg); font-weight: 600; box-shadow: var(--shadow); max-width: 480px; animation: pop 0.2s ease-out; }
.toast-error { background: var(--danger); color: #fff; }
@keyframes pop { from { transform: translateY(8px); opacity: 0; } }
.overlay { position: fixed; inset: 0; background: rgb(0 0 0 / 50%); display: grid; place-items: center; z-index: 70; padding: 16px; }
.overlay-card { display: flex; flex-direction: column; gap: 16px; max-width: 360px; text-align: center; }
.overlay-wide { width: 100%; max-width: 480px; text-align: left; max-height: 80dvh; overflow-y: auto; }
.overlay-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }

@media (min-width: 720px) {
  .game-picker { display: grid; grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

/* disclosure arrow for <details> (flex summaries lose the native marker) */
details > summary { list-style: none; }
details > summary::-webkit-details-marker { display: none; }
details > summary::before { content: '›'; display: inline-block; width: 1em; margin-right: 6px; font-size: 1.3em; line-height: 1; transition: transform 0.15s; color: var(--muted); }
details[open] > summary::before { transform: rotate(90deg); }

/* admin + invite note */
.page-footer { display: flex; flex-direction: column; align-items: center; gap: 4px; padding-top: 8px; }
.page-footer a { display: inline-flex; align-items: center; min-height: var(--tap); padding: 0 12px; }
.page-footer .feedback-link { gap: 10px; min-height: 52px; padding: 10px 22px; border-radius: 999px; color: var(--primary); background: var(--primary-soft); border-color: transparent; font-size: 1.05rem; }

/* feedback form */
.choice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.choice {
  display: flex; align-items: center; gap: 8px; min-height: 48px; padding: 8px 12px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface); font-weight: 600; text-align: left; cursor: pointer; touch-action: manipulation;
}
.choice.on { border-color: var(--primary); background: var(--primary-soft); color: var(--primary); box-shadow: inset 0 0 0 1px var(--primary); }
textarea { resize: vertical; min-height: 140px; line-height: 1.45; }
textarea:focus-visible { outline: 3px solid color-mix(in srgb, var(--primary) 60%, transparent); outline-offset: 2px; }
.char-count { text-align: right; font-variant-numeric: tabular-nums; }
.char-count.near { color: var(--warn); }
.feedback-thanks { font-size: 3rem; line-height: 1; }
.admin-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.admin-list li { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border); overflow-wrap: anywhere; }
.admin-list li:last-child { border-bottom: 0; padding-bottom: 0; }
.invite-note { width: 100%; display: flex; flex-direction: column; gap: 8px; font-size: 0.875rem; padding: 10px 12px; border-radius: var(--radius-sm); background: var(--primary-soft); }
.invite-note.warn { background: var(--warn-soft); color: var(--warn); font-weight: 600; }

/* password field with show/hide button */
.pw-field { position: relative; display: flex; align-items: center; width: 100%; }
.pw-field input { padding-right: 52px; }
.add-row:has(.pw-field) { flex-wrap: wrap; }
.add-row .pw-field { flex: 1 1 13em; }
.pw-toggle {
  position: absolute; right: 2px; top: 50%; transform: translateY(-50%);
  display: grid; place-items: center; width: var(--tap); height: var(--tap);
  border: 0; border-radius: var(--radius-sm); background: transparent; color: var(--muted); cursor: pointer;
}
.pw-toggle[aria-pressed='true'] { color: var(--primary); }

/* home sections + solo games */
.home-section { display: flex; flex-direction: column; gap: 12px; }
.home-section + .home-section { padding-top: 8px; border-top: 1px solid var(--border); }
.section-title { font-size: 0.8rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); padding-top: 4px; }
.solo-grid { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr)); }
.solo-card {
  display: flex; align-items: flex-start; gap: 12px; padding: 12px; min-height: 72px; height: 100%; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border); color: inherit; text-decoration: none; box-shadow: var(--shadow);
}
.solo-card:active { transform: translateY(1px); }
.solo-card .game-icon { width: 48px; height: 48px; }
.solo-card-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.solo-desc { display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.solo-best { color: var(--warn); font-weight: 700; }
.solo-intro { display: flex; gap: 14px; align-items: flex-start; }
.solo-intro .game-icon { width: 56px; height: 56px; }
.stack-tight { display: flex; flex-direction: column; gap: 6px; }
.topbar-icon { border-radius: 6px; margin-left: 8px; flex: none; }