:root {
  --bg: #f3f6fb;
  --card: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-soft: #dbeafe;
  --ok: #059669;
  --warn: #d97706;
  --radius: 16px;
  --shadow: 0 10px 28px rgba(15, 23, 42, 0.07);
  --font: "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  min-height: 100dvh;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1000px 520px at 0% -10%, #dbeafe 0%, transparent 55%),
    radial-gradient(800px 420px at 100% 0%, #e0e7ff 0%, transparent 45%),
    var(--bg);
}

body { padding: 0 0 calc(76px + env(safe-area-inset-bottom)); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.gate { display: none; }
html.is-gated .gate {
  display: grid; place-items: center; position: fixed; inset: 0; z-index: 80;
  padding: 24px; background: #f1f5f9;
}
html.is-gated .app, html.is-gated .dock { visibility: hidden; }

.gate-card {
  width: min(420px, 100%); padding: 28px 22px 24px; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); text-align: center;
}
.gate-kicker { margin: 0 0 8px; font-size: .8rem; letter-spacing: .04em; color: var(--blue); font-weight: 700; }
.gate-card h1 { margin: 0 0 8px; font-size: 1.35rem; }
.gate-copy { margin: 0 0 18px; color: var(--muted); font-size: .95rem; }
.gate-form { display: grid; gap: 10px; }
.gate-form input[type="password"], .gate-form input[type="text"] {
  width: 100%; padding: 14px; border: 1px solid var(--line); border-radius: 12px; font-size: 1rem;
}
.gate-show { display: flex; align-items: center; gap: 8px; font-size: .9rem; color: var(--muted); cursor: pointer; }
.gate-show input { width: auto; margin: 0; }
.gate-error { margin: 12px 0 0; color: #dc2626; font-size: .9rem; }

.btn {
  appearance: none; border: 0; border-radius: 12px; padding: 12px 16px;
  font-size: 1rem; font-weight: 700; cursor: pointer;
}
.btn-primary { background: var(--blue); color: #fff; width: 100%; margin-top: 8px; }
.btn-primary:active { background: var(--blue-dark); }
.btn-ghost { background: var(--blue-soft); color: var(--blue-dark); width: 100%; margin-top: 8px; }
.linkish {
  appearance: none; border: 0; background: transparent; color: var(--blue);
  font: inherit; font-weight: 700; padding: 0; margin: 0 0 10px; cursor: pointer;
}

.app { max-width: 520px; margin: 0 auto; padding: 18px 16px 24px; }

.top { display: flex; gap: 12px; align-items: center; margin-bottom: 14px; }
.logo {
  width: 48px; height: 48px; border-radius: 14px;
  background: linear-gradient(145deg, #3b82f6, #1d4ed8); color: #fff;
  display: grid; place-items: center; font-weight: 800;
  box-shadow: 0 8px 18px rgba(37, 99, 235, .28);
}
.top h1 { margin: 0; font-size: 1.12rem; }
.top p { margin: 2px 0 0; color: var(--muted); font-size: .85rem; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-bottom: 8px; }
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 10px 6px; text-align: center;
}
.stat strong { display: block; font-size: .95rem; }
.stat span { color: var(--muted); font-size: .68rem; }

.xp-track {
  height: 6px; background: #e2e8f0; border-radius: 999px; overflow: hidden; margin-bottom: 14px;
}
.xp-track > i {
  display: block; height: 100%; width: 0;
  background: linear-gradient(90deg, #60a5fa, #2563eb); transition: width .25s ease;
}

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; margin-bottom: 12px; box-shadow: var(--shadow);
}
.card.hero {
  background: linear-gradient(160deg, #eff6ff, #fff 55%);
  border-color: #bfdbfe;
}
.card h2 { margin: 0 0 6px; font-size: 1.05rem; }
.kicker { margin: 0 0 6px; color: var(--blue); font-size: .78rem; font-weight: 800; letter-spacing: .03em; }
.muted { color: var(--muted); font-size: .9rem; line-height: 1.45; }

.league-grid { display: grid; gap: 8px; margin-top: 10px; }
.league-card {
  text-align: left; border: 1px solid var(--line); border-left: 4px solid var(--accent, var(--blue));
  border-radius: 12px; padding: 12px; background: #fff; font: inherit; cursor: pointer;
}
.league-card strong { display: block; margin-bottom: 4px; }
.league-card span { color: var(--muted); font-size: .85rem; }
.league-card em { display: block; margin-top: 6px; font-style: normal; font-size: .8rem; color: var(--ink); }
.mini-bar { height: 6px; background: #e2e8f0; border-radius: 999px; overflow: hidden; margin-top: 8px; }
.mini-bar > i { display: block; height: 100%; background: var(--accent, var(--blue)); }

.league-block { margin-bottom: 16px; }
.league-block h2 { margin: 0 0 4px; font-size: 1rem; }
.league-block > p { margin: 0 0 10px; color: var(--muted); font-size: .88rem; }

.path-list { display: grid; gap: 8px; }
.path-node {
  text-align: left; border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px;
  background: #fff; font: inherit; cursor: pointer;
}
.path-node strong { display: block; margin: 2px 0; }
.path-node span { color: var(--muted); font-size: .82rem; }
.path-mark {
  display: inline-block; font-size: .72rem; font-weight: 800; padding: 2px 8px;
  border-radius: 999px; background: #e2e8f0; color: #475569;
}
.path-node.is-open { border-color: #93c5fd; background: #f8fbff; }
.path-node.is-open .path-mark { background: #dbeafe; color: #1d4ed8; }
.path-node.is-done { border-color: #6ee7b7; background: #f0fdf4; }
.path-node.is-done .path-mark { background: #d1fae5; color: #047857; }
.path-node.is-lock { opacity: .55; cursor: not-allowed; }

.lesson-body p { margin: 0 0 10px; line-height: 1.55; color: #334155; font-size: .95rem; }

.quiz-progress { font-size: .8rem; font-weight: 700; color: var(--blue); margin-bottom: 8px; }
.quiz-q { font-weight: 800; margin-bottom: 12px; line-height: 1.4; }
.quiz-opts { display: grid; gap: 8px; }
.quiz-opts button {
  text-align: left; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line);
  background: #fff; font: inherit; cursor: pointer;
}
.quiz-opts button.is-correct { border-color: #6ee7b7; background: #ecfdf5; }
.quiz-opts button.is-wrong { border-color: #fca5a5; background: #fef2f2; }
.feedback { margin-top: 10px; font-size: .92rem; color: var(--muted); }
.card-inner.win { text-align: center; padding: 8px 0; }
.card-inner.win h3 { margin: 0 0 6px; }

.check-list { display: grid; gap: 8px; margin: 12px 0; }
.check-item {
  display: grid; grid-template-columns: 22px 1fr; gap: 10px; align-items: start;
  border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; background: #fff;
}
.check-item input { margin-top: 3px; }
.check-item small { display: block; color: var(--muted); margin-top: 4px; }
.progress { height: 8px; background: #e2e8f0; border-radius: 999px; overflow: hidden; margin: 12px 0 8px; }
.progress > i {
  display: block; height: 100%; width: 0;
  background: linear-gradient(90deg, #60a5fa, #2563eb); transition: width .25s ease;
}

.sim-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.sim-row label { display: grid; gap: 6px; font-size: .85rem; color: var(--muted); }
.sim-row input, .sim-row select {
  padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; font: inherit; color: var(--ink);
}
.actions { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.actions .btn { flex: 1; min-width: 120px; margin-top: 0; }

.folio-row {
  display: flex; justify-content: space-between; gap: 8px; padding: 10px 0;
  border-bottom: 1px solid var(--line); font-size: .9rem;
}
.folio-row:last-child { border-bottom: 0; }

.mission {
  border: 1px solid var(--line); border-radius: 12px; padding: 12px; margin-bottom: 8px; background: #fff;
}
.mission strong { display: block; margin-bottom: 4px; }
.mission p { margin: 0 0 6px; color: var(--muted); font-size: .88rem; }
.mission em { font-style: normal; font-size: .78rem; color: var(--blue-dark); font-weight: 700; }
.mission.is-done { background: #f0fdf4; border-color: #86efac; }
.mission.is-lock { opacity: .55; }

.trade-log { margin: 0; padding: 0; display: grid; gap: 6px; }
.trade-log li {
  list-style: none; padding: 10px 12px; border-radius: 10px;
  background: #f8fafc; border: 1px solid var(--line); font-size: .88rem;
}

.dock {
  position: fixed; left: 0; right: 0; bottom: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px;
  padding: 8px 8px calc(8px + env(safe-area-inset-bottom));
  background: rgba(255,255,255,.94); backdrop-filter: blur(10px);
  border-top: 1px solid var(--line); z-index: 40;
}
.dock button {
  appearance: none; border: 0; background: transparent; padding: 8px 4px;
  font: inherit; font-size: .72rem; color: var(--muted); font-weight: 700; cursor: pointer;
}
.dock button.is-on { color: var(--blue); }
.dock button span { display: block; font-size: 1.05rem; margin-bottom: 2px; }