:root, [data-theme="dark"] {
  --bg: #061428;
  --bg2: #0c1a30;
  --card: rgba(16, 28, 48, 0.92);
  --card-hover: rgba(22, 38, 62, 0.96);
  --border: #2a4a58;
  --text: #e8eefc;
  --muted: #9aa8c7;
  --accent: #3dd6c6;
  --accent-dim: #1f8f84;
  --warn: #f5c542;
  --danger: #ff6b6b;
  --ok: #3ddc97;
  --tip: #9ec5ff;
  --topbar-bg: rgba(6, 20, 40, 0.88);
  --tabbar-bg: rgba(6, 18, 36, 0.94);
  --home-from: #061428;
  --home-to: #0d8f88;
  --home-mid: #0a3d4a;
  --home-grad: linear-gradient(165deg, var(--home-from) 0%, var(--home-mid) 48%, var(--home-to) 100%);
  --app-grad: linear-gradient(180deg, #07122a 0%, #061428 50%);
  --radius: 14px;
  --shadow: 0 8px 24px rgba(0,0,0,.35);
  --tap: 48px;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  color-scheme: dark;
}

[data-theme="light"] {
  --bg: #e8f0f6;
  --bg2: #ffffff;
  --card: rgba(255, 255, 255, 0.92);
  --card-hover: #f2f8fa;
  --border: #b7cdd6;
  --text: #122338;
  --muted: #4f6280;
  --accent: #0d9f90;
  --accent-dim: #0a7a6f;
  --warn: #a87b00;
  --danger: #d64545;
  --ok: #1a9f63;
  --tip: #1a5fb4;
  --topbar-bg: rgba(232, 240, 246, 0.9);
  --tabbar-bg: rgba(255, 255, 255, 0.94);
  --home-from: #e4eef8;
  --home-to: #b7e8e2;
  --home-mid: #d2e8f0;
  --home-grad: linear-gradient(165deg, var(--home-from) 0%, var(--home-mid) 48%, var(--home-to) 100%);
  --app-grad: linear-gradient(180deg, #eef4f8 0%, #e8f0f6 50%);
  --shadow: 0 8px 24px rgba(21,34,56,.08);
  color-scheme: light;
}


/* Self-hosted Orbitron (OFL) — Arc wordmark */
@font-face {
  font-family: "Orbitron";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/fonts/orbitron-latin-600.woff2") format("woff2");
}
@font-face {
  font-family: "Orbitron";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/fonts/orbitron-latin-700.woff2") format("woff2");
}
@font-face {
  font-family: "Orbitron";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("/fonts/orbitron-latin-800.woff2") format("woff2");
}
@font-face {
  font-family: "Orbitron";
  font-style: normal;
  font-weight: 900;
  font-display: swap;
  src: url("/fonts/orbitron-latin-900.woff2") format("woff2");
}

.arc-wordmark {
  --arc-yellow: #FFC72C;
  --arc-navy: #0B1F3A;
  display: inline-flex;
  align-items: baseline;
  gap: 0;
  font-family: "Orbitron", "Segoe UI", system-ui, sans-serif;
  font-weight: 800;
  font-style: italic;
  letter-spacing: 0.02em;
  line-height: 1;
  color: var(--arc-yellow);
  text-transform: none;
  text-shadow:
    0 0 6px color-mix(in srgb, var(--arc-yellow) 55%, transparent),
    0 0 14px color-mix(in srgb, var(--arc-yellow) 28%, transparent);
  -webkit-text-stroke: 0.2px color-mix(in srgb, var(--arc-navy) 35%, transparent);
}
.arc-wordmark--sm { font-size: 0.95em; letter-spacing: 0.01em; }
.arc-wordmark--md { font-size: 1.35rem; }
.arc-wordmark--lg { font-size: 1.75rem; }
.arc-wordmark--block { display: flex; justify-content: center; }
.arc-wm-a, .arc-wm-rc {
  display: inline-block;
  transform: skewX(-6deg);
}
.arc-wm-bolt {
  display: inline-block;
  font-style: normal;
  font-size: 0.72em;
  line-height: 1;
  margin: 0 0.02em;
  transform: translateY(-0.08em) skewX(-6deg);
  filter: drop-shadow(0 0 4px color-mix(in srgb, var(--arc-yellow) 70%, transparent));
  color: var(--arc-yellow);
}
.arc-wm-sub {
  font-family: "Segoe UI", system-ui, sans-serif;
  font-style: normal;
  font-weight: 600;
  font-size: 0.72em;
  letter-spacing: 0;
  color: var(--text);
  text-shadow: none;
  -webkit-text-stroke: 0;
  margin-left: 0.35em;
}
.brand-title {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.brand-title .arc-wordmark { font-size: 1.2rem; }
h1.brand-title { font-size: inherit; font-weight: inherit; }

.logo.logo--bolt {
  background: var(--arc-navy, #0B1F3A);
  color: #FFC72C;
  border: 1px solid color-mix(in srgb, #FFC72C 35%, #0B1F3A);
  box-shadow:
    0 0 0 1px color-mix(in srgb, #FFC72C 18%, transparent),
    0 6px 16px rgba(0,0,0,.28),
    inset 0 0 12px color-mix(in srgb, #FFC72C 12%, transparent);
  font-size: 1.35rem;
}
.unlock-hero .logo.logo--bolt { margin: 0 auto 12px; font-size: 1.6rem; }

@keyframes arc-flicker {
  0%, 100% { opacity: 1; filter: brightness(1); }
  40% { opacity: 0.92; filter: brightness(1.15); }
  55% { opacity: 1; filter: brightness(0.95); }
  70% { opacity: 0.97; filter: brightness(1.2); }
}
@media (prefers-reduced-motion: no-preference) {
  #screen-home.active .arc-wordmark {
    animation: arc-flicker 1.1s ease-in-out 1;
  }
}
@media (prefers-reduced-motion: reduce) {
  .arc-wordmark { animation: none !important; }
}
[data-theme="light"] .arc-wordmark {
  text-shadow:
    0 0 5px color-mix(in srgb, #FFC72C 45%, transparent),
    0 1px 0 color-mix(in srgb, #0B1F3A 18%, transparent);
  -webkit-text-stroke: 0.15px color-mix(in srgb, #0B1F3A 25%, transparent);
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--text);
  min-height: 100%;
  -webkit-tap-highlight-color: transparent;
}
body { min-height: 100dvh; }

#app {
  max-width: 480px; margin: 0 auto; min-height: 100dvh;
  background: var(--app-grad);
}
#app.is-home {
  background: var(--home-grad);
}
#screen-home.active {
  background: transparent;
}
#screen-home .topbar {
  background: color-mix(in srgb, var(--home-from) 55%, transparent);
}
#screen-home .module-card,
#screen-home .banner,
#screen-home .install-banner {
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.screen { display: none; min-height: 100dvh; flex-direction: column; }
.screen.active { display: flex; }

.topbar {
  padding: 16px 16px 10px;
  position: sticky; top: 0;
  background: var(--topbar-bg);
  backdrop-filter: blur(10px);
  z-index: 10;
}
.topbar.compact {
  display: grid;
  grid-template-columns: var(--tap) 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  min-height: calc(var(--tap) + 12px);
}
.topbar.compact h1 { margin: 0; font-size: 1.05rem; text-align: center; }
.brand-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.brand { display: flex; gap: 12px; align-items: center; }
.logo {
  width: 46px; height: 46px; border-radius: 12px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent-dim), var(--accent));
  font-size: 1.4rem; box-shadow: var(--shadow); flex-shrink: 0;
}
.logo.logo--bolt { /* navy + yellow bolt — matches app icon */
  background: #0B1F3A;
  color: #FFC72C;
}
.brand h1, .brand h1.brand-title { margin: 0; font-size: 1.15rem; letter-spacing: -.02em; }
.tagline { margin: 2px 0 0; color: var(--muted); font-size: .82rem; }

.content { padding: 12px 16px 28px; flex: 1; }
.footer { text-align: center; color: var(--muted); font-size: .75rem; padding: 8px 16px 20px; }

.section-title {
  font-size: .78rem; text-transform: uppercase; letter-spacing: .08em;
  color: var(--muted); margin: 18px 0 10px;
}

.banner {
  border-radius: var(--radius); padding: 12px 14px;
  font-size: .85rem; line-height: 1.4;
  border: 1px solid var(--border); background: var(--bg2);
}
.banner.warn {
  border-color: color-mix(in srgb, var(--warn) 45%, var(--border));
  background: color-mix(in srgb, var(--warn) 12%, var(--bg2));
  color: var(--text);
}
.banner.hint {
  margin-top: 10px;
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  background: color-mix(in srgb, var(--accent) 10%, var(--bg2));
}

.module-list { display: flex; flex-direction: column; gap: 10px; }
.module-card {
  display: flex; align-items: center; gap: 12px;
  width: 100%; text-align: left;
  border: 1px solid var(--border); background: var(--card); color: var(--text);
  border-radius: var(--radius); padding: 14px;
  min-height: var(--tap);
  cursor: pointer; box-shadow: var(--shadow);
  transition: transform .12s ease, background .12s ease;
}
.module-card:not(.disabled):active { transform: scale(.98); }
.module-card:not(.disabled):hover { background: var(--card-hover); }
.module-card.disabled { opacity: .55; cursor: default; box-shadow: none; }
.mod-icon { font-size: 1.4rem; width: 36px; text-align: center; }
.mod-body { flex: 1; display: flex; flex-direction: column; gap: 3px; }
.mod-title { font-weight: 650; font-size: .98rem; }
.mod-desc { color: var(--muted); font-size: .78rem; line-height: 1.3; }
.mod-badge {
  font-size: .7rem; font-weight: 700; padding: 6px 10px;
  border-radius: 999px; white-space: nowrap;
}
.mod-badge.go { background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent); }
.mod-badge.soon { background: var(--bg2); color: var(--muted); }

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px;
}
.card.muted { color: var(--muted); font-size: .9rem; }

.back-btn, .ghost-btn, .icon-btn {
  background: var(--card); border: 1px solid var(--border); color: var(--text);
  border-radius: 12px; min-width: var(--tap); min-height: var(--tap);
  padding: 0 12px; font-size: .95rem; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
}
.ghost-btn { font-size: .82rem; font-weight: 600; }
.icon-btn { font-size: 1.15rem; flex-shrink: 0; }
.link-btn {
  display: inline; margin-left: 6px; background: none; border: none;
  color: var(--accent); font-weight: 700; cursor: pointer; text-decoration: underline;
  font-size: inherit; padding: 4px; min-height: var(--tap);
}

.progress-pill {
  font-size: .78rem; color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  border-radius: 999px; padding: 8px 12px; font-weight: 650;
  min-height: 36px; display: inline-flex; align-items: center;
}

.q-meta {
  display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap;
  margin-bottom: 10px; color: var(--muted); font-size: .78rem;
}
.q-chip {
  background: var(--bg2); border-radius: 999px; padding: 4px 10px;
  color: var(--text); font-weight: 600;
}
.question-card h2 { margin: 0 0 12px; font-size: 1.05rem; line-height: 1.35; }
.params {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 12px 0 16px;
}
.param {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px;
}
.param .label { display: block; color: var(--muted); font-size: .7rem; margin-bottom: 2px; }
.param .value { font-weight: 700; font-size: .95rem; }

.load-list { margin: 0 0 14px; padding-left: 18px; font-size: .9rem; line-height: 1.45; }
.load-list li { margin-bottom: 4px; }

.choices { display: flex; flex-direction: column; gap: 10px; margin: 8px 0 14px; }
.choice {
  width: 100%; text-align: left;
  border: 1px solid var(--border); background: var(--bg2); color: var(--text);
  border-radius: 12px; padding: 14px 16px;
  min-height: var(--tap); font-size: 1rem; cursor: pointer;
}
.choice:hover:not(:disabled) { border-color: var(--accent-dim); }
.choice.selected { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--bg2)); }
.choice.correct { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 14%, var(--bg2)); }
.choice.wrong { border-color: var(--danger); background: color-mix(in srgb, var(--danger) 12%, var(--bg2)); }
.choice:disabled { cursor: default; }

.btn {
  border: none; border-radius: 12px; padding: 14px 16px;
  font-weight: 700; font-size: .95rem; cursor: pointer;
  min-height: var(--tap);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-dim), var(--accent));
  color: #06201d; width: 100%;
}
[data-theme="light"] .btn-primary { color: #fff; }
.btn-primary:disabled { opacity: .5; cursor: default; }
.btn-secondary {
  background: var(--card); color: var(--text);
  border: 1px solid var(--border); width: 100%; margin-top: 8px;
}
.btn-row { display: flex; gap: 8px; margin-top: 12px; }
.btn-row .btn { flex: 1; }

.feedback {
  margin-top: 14px; border-radius: var(--radius); padding: 14px;
  border: 1px solid var(--border);
}
.feedback.ok { border-color: color-mix(in srgb, var(--ok) 45%, var(--border)); background: color-mix(in srgb, var(--ok) 10%, var(--card)); }
.feedback.bad { border-color: color-mix(in srgb, var(--danger) 45%, var(--border)); background: color-mix(in srgb, var(--danger) 8%, var(--card)); }
.feedback h3 { margin: 0 0 8px; font-size: 1rem; }
.steps { margin: 0; padding-left: 18px; color: var(--text); font-size: .88rem; line-height: 1.45; }
.steps li { margin-bottom: 6px; }
.sparky-tip {
  margin-top: 12px; padding: 12px; border-radius: 12px;
  background: color-mix(in srgb, var(--tip) 12%, var(--bg2));
  border: 1px solid color-mix(in srgb, var(--tip) 35%, var(--border));
  color: var(--text); font-size: .88rem; line-height: 1.4;
}
.sparky-tip strong { color: var(--tip); }
.note { margin-top: 10px; font-size: .75rem; color: var(--warn); line-height: 1.35; }

.table-wrap {
  overflow-x: auto; margin-top: 10px; border-radius: 10px; border: 1px solid var(--border);
}
table.mv-table, table.ref-table {
  width: 100%; border-collapse: collapse; font-size: .75rem; background: var(--bg2);
}
table.mv-table th, table.mv-table td,
table.ref-table th, table.ref-table td {
  padding: 7px 8px; border-bottom: 1px solid var(--border); text-align: left;
}
table.mv-table th, table.ref-table th {
  color: var(--muted); font-weight: 600; background: color-mix(in srgb, var(--card) 80%, var(--bg2));
}
table.mv-table td { text-align: center; }
table.mv-table tr:last-child td, table.ref-table tr:last-child td { border-bottom: none; }

.result-hero, .stat-hero {
  text-align: center; padding: 28px 16px; background: var(--card);
  border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 14px;
}
.result-hero .score, .stat-hero .score {
  font-size: 3rem; font-weight: 800; letter-spacing: -.04em; color: var(--accent);
}
.result-hero .label, .stat-hero .label { color: var(--muted); margin-top: 4px; }

.details-list, .progress-list, .scoreboard { display: flex; flex-direction: column; gap: 8px; }
.detail-item, .progress-item, .score-row {
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  padding: 12px 14px; min-height: var(--tap);
  border-radius: 12px; background: var(--bg2); border: 1px solid var(--border);
  font-size: .9rem;
}
.detail-item .ok, .progress-item .ok { color: var(--ok); font-weight: 700; }
.detail-item .bad { color: var(--danger); font-weight: 700; }
.bar {
  height: 8px; border-radius: 999px; background: var(--border); overflow: hidden; margin-top: 6px;
}
.bar > span { display: block; height: 100%; background: var(--accent); border-radius: 999px; }

.field { margin-bottom: 12px; }
.field label { display: block; font-size: .8rem; color: var(--muted); margin-bottom: 6px; }
.field input, .field select {
  width: 100%; min-height: var(--tap); padding: 12px 14px;
  border-radius: 12px; border: 1px solid var(--border);
  background: var(--bg2); color: var(--text); font-size: 1rem;
}
.player-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 14px; }
.chip {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 999px;
  padding: 8px 12px; font-size: .85rem; font-weight: 600;
}
.chip.active { border-color: var(--accent); color: var(--accent); }
.timer-bar {
  height: 10px; border-radius: 999px; background: var(--border); overflow: hidden; margin-bottom: 12px;
}
.timer-bar > span { display: block; height: 100%; background: var(--accent); transition: width .2s linear; }
.timer-bar.urgent > span { background: var(--danger); }

@media (min-width: 480px) {
  #app { border-left: 1px solid var(--border); border-right: 1px solid var(--border); }
}

/* v0.3 practical + review */
.video-slot {
  margin: 12px 0;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: var(--bg2);
  min-height: 160px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 20px; color: var(--muted); gap: 8px;
}
.video-slot iframe, .video-slot video {
  width: 100%; max-width: 100%; border: 0; border-radius: 10px; aspect-ratio: 16/9;
}
.checklist { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.checklist li {
  display: flex; gap: 10px; align-items: flex-start;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 14px; min-height: var(--tap); font-size: .9rem;
}
.checklist li input { width: 20px; height: 20px; margin-top: 2px; flex-shrink: 0; }
.mistake-list { margin: 0; padding-left: 18px; font-size: .9rem; line-height: 1.45; }
.mistake-list li { margin-bottom: 6px; }
.review-item {
  border: 1px solid var(--border); background: var(--card);
  border-radius: var(--radius); padding: 14px; margin-bottom: 10px;
}
.review-item .meta { color: var(--muted); font-size: .75rem; margin-bottom: 6px; }
.review-item .ans { color: var(--ok); font-weight: 700; margin-top: 8px; font-size: .9rem; }
.review-item details { margin-top: 8px; font-size: .88rem; }
.pill-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.pill-row button {
  min-height: 40px; padding: 8px 12px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--bg2); color: var(--text);
  font-size: .8rem; font-weight: 600; cursor: pointer;
}
.pill-row button.active { border-color: var(--accent); color: var(--accent); }
.badge-review {
  display: inline-block; font-size: .68rem; font-weight: 700;
  padding: 3px 8px; border-radius: 999px;
  background: color-mix(in srgb, var(--warn) 18%, transparent); color: var(--warn);
}

/* v0.4 PWA + tabs */
:root { --tab-h: calc(56px + env(safe-area-inset-bottom, 0px)); }
html { height: 100%; }
body {
  overscroll-behavior-y: none;
  padding: env(safe-area-inset-top, 0) env(safe-area-inset-right, 0) 0 env(safe-area-inset-left, 0);
}
#app { padding-bottom: var(--tab-h); min-height: 100dvh; }
.tabbar {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: 0; width: 100%; max-width: 480px;
  display: grid; grid-template-columns: repeat(5, 1fr);
  gap: 0; background: var(--tabbar-bg, var(--topbar-bg)); border-top: 1px solid var(--border);
  padding: 6px 4px calc(6px + env(safe-area-inset-bottom, 0px));
  z-index: 40; backdrop-filter: blur(12px);
}
.tabbar button {
  appearance: none; border: 0; background: transparent; color: var(--muted);
  min-height: 48px; font-size: .68rem; font-weight: 700; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  -webkit-user-select: none; user-select: none;
}
.tabbar button .ico { font-size: 1.15rem; line-height: 1; }
.tabbar button.active { color: var(--accent); }
.tabbar button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button, .module-card, .choice { -webkit-user-select: none; user-select: none; }
button:focus-visible, .module-card:focus-visible, .choice:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
.install-banner {
  display: flex; gap: 10px; align-items: center; justify-content: space-between;
  margin: 10px 0; padding: 12px 14px; border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--border));
  background: color-mix(in srgb, var(--accent) 12%, var(--bg2));
}
.region-grid { display: grid; gap: 10px; }
.region-grid button {
  text-align: left; min-height: 56px; padding: 14px; border-radius: 14px;
  border: 1px solid var(--border); background: var(--card); color: var(--text); cursor: pointer;
}
.region-grid button.active { border-color: var(--accent); }
.overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.55); z-index: 50;
  display: flex; align-items: flex-end; justify-content: center;
}
.overlay[hidden], .overlay.is-closed {
  display: none !important;
}
.overlay .sheet {
  width: 100%; max-width: 480px; background: var(--bg); border-radius: 18px 18px 0 0;
  padding: 18px 16px calc(18px + env(safe-area-inset-bottom, 0px));
  max-height: 90dvh; overflow: auto;
}
.lb-row { display:flex; justify-content:space-between; gap:8px; padding:12px; border:1px solid var(--border); border-radius:12px; background:var(--bg2); min-height:48px; align-items:center; }
.lb-row.me { border-color: var(--accent); }
.tracker li { display:flex; gap:10px; align-items:flex-start; padding:10px; border:1px solid var(--border); border-radius:12px; background:var(--bg2); margin-bottom:8px; }
.muted-empty { color: var(--muted); text-align:center; padding:24px 12px; }


.region-chip {
  display: inline-flex; align-items: center; gap: 6px;
  min-height: 40px; padding: 8px 12px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--card); color: var(--text);
  font-size: .78rem; font-weight: 700; cursor: pointer;
  -webkit-user-select: none; user-select: none;
}
.region-chip:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.region-chip .flag { font-size: 1rem; line-height: 1; }


/* Ireland SOLAS phase sections + home polish */
.phase-card {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.phase-head {
  display: flex; gap: 12px; align-items: flex-start; margin-bottom: 10px;
}
.progress-ring {
  --pct: 0;
  width: 52px; height: 52px; flex-shrink: 0;
  border-radius: 50%;
  background: conic-gradient(var(--accent) calc(var(--pct) * 1%), color-mix(in srgb, var(--border) 70%, transparent) 0);
  display: grid; place-items: center;
  position: relative;
}
.progress-ring::before {
  content: "";
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--bg2);
  position: absolute;
}
.progress-ring span {
  position: relative; z-index: 1;
  font-size: .68rem; font-weight: 800; color: var(--text);
}
.phase-head h3 { margin: 0 0 4px; font-size: 1.05rem; }
.phase-intro {
  margin: 0; color: var(--muted); font-size: .82rem; line-height: 1.4;
}
.phase-meta {
  margin: 6px 0 0; font-size: .72rem; color: var(--muted); font-weight: 600;
}
.phase-actions {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 10px;
}
.phase-actions button {
  min-height: 44px; border-radius: 12px;
  border: 1px solid var(--border); background: var(--bg2); color: var(--text);
  font-size: .78rem; font-weight: 700; cursor: pointer; padding: 8px 6px;
}
.phase-actions button.primary {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
  background: color-mix(in srgb, var(--accent) 14%, var(--bg2));
  color: var(--accent);
}
.phase-practical { margin-top: 10px; display: flex; flex-direction: column; gap: 8px; }
.phase-practical .module-card { margin: 0; box-shadow: none; }
.phase-detail-list { margin: 10px 0 0; padding-left: 18px; color: var(--muted); font-size: .82rem; line-height: 1.45; }


/* ---- Auto + permanent install UI ---- */
.install-sticky {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(var(--tab-h) + 10px);
  width: calc(100% - 20px); max-width: 460px;
  z-index: 45;
  animation: install-slide-up .35s ease-out;
}
.install-sticky[hidden] { display: none !important; }
.install-sticky-inner {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid color-mix(in srgb, var(--accent) 55%, var(--border));
  background: color-mix(in srgb, var(--accent) 18%, var(--bg2));
  box-shadow: 0 12px 32px rgba(0,0,0,.35);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.install-sticky-icon { font-size: 1.4rem; line-height: 1; }
.install-sticky-copy { flex: 1; min-width: 140px; display: flex; flex-direction: column; gap: 2px; }
.install-sticky-copy strong { font-size: .95rem; }
.install-sticky-copy span { font-size: .75rem; color: var(--muted); line-height: 1.3; }
.install-sticky-btn { width: auto; padding: 10px 16px; min-height: 44px; margin: 0; }
.install-sticky-dismiss { margin-left: auto; font-size: .78rem; }
@keyframes install-slide-up {
  from { opacity: 0; transform: translateX(-50%) translateY(18px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.install-overlay { z-index: 60; }
.install-sheet { position: relative; overflow: visible; }
.ios-share-arrow {
  position: absolute; left: 50%; bottom: calc(100% - 6px);
  transform: translateX(-50%);
  width: 28px; height: 56px;
  display: flex; align-items: flex-end; justify-content: center;
  pointer-events: none;
  animation: ios-arrow-bounce 1.1s ease-in-out infinite;
}
.ios-share-arrow svg { width: 28px; height: 56px; color: var(--accent); filter: drop-shadow(0 2px 6px rgba(0,0,0,.35)); }
@keyframes ios-arrow-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-10px); }
}
.ios-steps { margin: 12px 0 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; }
.ios-steps li {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 12px 14px; border-radius: 12px;
  border: 1px solid var(--border); background: var(--bg2);
  font-size: .9rem; line-height: 1.35;
}
.ios-steps .step-num {
  width: 28px; height: 28px; border-radius: 999px; flex-shrink: 0;
  display: grid; place-items: center;
  background: color-mix(in srgb, var(--accent) 18%, var(--bg2));
  color: var(--accent); font-weight: 800; font-size: .85rem;
}
.ios-share-glyph {
  display: inline-flex; align-items: center; justify-content: center;
  width: 1.4em; height: 1.4em; vertical-align: -0.2em;
  border: 1.5px solid currentColor; border-radius: 4px; font-size: .95em;
}
.install-header-btn {
  width: var(--tap); height: var(--tap); min-width: var(--tap);
  border-radius: 999px; border: 1px solid var(--border);
  background: var(--card); color: var(--text);
  display: grid; place-items: center; cursor: pointer;
  font-size: 1.05rem; padding: 0;
}
.install-header-btn.installed {
  opacity: .85; cursor: default; color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, var(--border));
}
.install-settings-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  width: 100%; text-align: left; min-height: var(--tap);
  padding: 14px; margin: 12px 0; border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--border));
  background: color-mix(in srgb, var(--accent) 10%, var(--card));
  color: var(--text); cursor: pointer; font: inherit;
}
.install-settings-row .mod-title { font-weight: 700; display: block; }
.install-settings-row .mod-desc { font-size: .8rem; color: var(--muted); }
.install-settings-row.installed { cursor: default; border-color: color-mix(in srgb, var(--ok) 40%, var(--border)); background: color-mix(in srgb, var(--ok) 10%, var(--card)); }
.install-manual {
  margin-top: 10px; padding: 12px 14px; border-radius: 12px;
  border: 1px dashed var(--border); background: var(--bg2);
  font-size: .85rem; line-height: 1.4; color: var(--muted);
}


/* Exam Pass unlock */
.unlock-card {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  width: 100%; text-align: left; margin: 12px 0; padding: 14px;
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--border));
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 16%, var(--card)), var(--card));
  color: var(--text); cursor: pointer; font: inherit; box-shadow: var(--shadow);
}
.unlock-card.owned { cursor: default; border-color: color-mix(in srgb, var(--ok) 40%, var(--border)); background: color-mix(in srgb, var(--ok) 10%, var(--card)); }
.unlock-hero { padding: 8px 0 4px; }


/* Legal / policy */
.legal-ph {
  background: color-mix(in srgb, var(--danger) 16%, transparent);
  border: 1px dashed color-mix(in srgb, var(--danger) 55%, var(--border));
  border-radius: 4px;
  padding: 0 .25em;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .92em;
}
.legal-links {
  display: flex; flex-wrap: wrap; gap: 10px 14px;
  margin: 14px 0 6px; font-size: .88rem;
}
.legal-links a, button.link-btn.legal-link {
  color: var(--accent);
  background: none; border: none; padding: 0; font: inherit; cursor: pointer; text-decoration: underline;
}
.legal-contact {
  margin-top: 12px; padding: 12px 14px;
  border-radius: var(--radius); border: 1px solid var(--border); background: var(--bg2);
  font-size: .88rem; line-height: 1.45;
}
#legal-root h2.section-title { margin-top: 18px; }
#legal-root a { color: var(--accent); }

/* Videos */
.video-card {
  margin: 14px 0 18px;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
}
.video-card-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 10px;
}
.video-card-head h3 { margin: 0; font-size: 1.05rem; line-height: 1.3; }
.video-card .mod-desc { margin: 8px 0 12px; }
.video-badge {
  flex: 0 0 auto;
  font-size: .68rem; font-weight: 800; letter-spacing: .02em; text-transform: uppercase;
  padding: 4px 8px; border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 18%, var(--bg2));
  color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--border));
}
.video-badge.pass { color: var(--muted); background: var(--bg2); border-color: var(--border); }
#screen-videos .content {
  padding-bottom: calc(96px + env(safe-area-inset-bottom, 0px));
}
.video-card video, .video-poster {
  display: block; width: 100%; height: auto;
  max-height: calc(100vh - 280px);
  border-radius: 12px; background: #061428; object-fit: contain;
}
.video-card video { aspect-ratio: 9 / 16; }