/* 독해 강화 — 디자인 토큰
   브랜드: 틸(#0d9488) → 인디고(#4f46e5) + 앰버 포인트(읽는 위치 표시)
   훈련 방식 색: 측정(인디고) · 페이서(틸) · 훑어 읽기(앰버) · 찾아 읽기(로즈) · 요약(바이올렛) */
:root {
  color-scheme: light;
  --bg: #f7f8f6;
  --surface: #ffffff;
  --surface-2: #eef1ee;
  --ink: #15201d;
  --ink-2: #3f4b47;
  --muted: #5f6b67;
  --line: #dfe5e2;

  --brand: #0d9488;
  --brand-2: #4f46e5;
  --brand-ink: #0b766d;
  --lime: #fbbf24; /* 포인트 (읽는 위치·강조) */
  --on-lime: #2a1d00;
  --mark: #fde68a; /* 근거 문장 강조 */

  /* 채움색 · 글자색(밝은 배경 대비 4.5:1 이상) · 진한 채움(흰 글자를 올리는 버튼) */
  --test: #4f46e5; --test-ink: #4338ca; --test-strong: #4338ca;
  --pacer: #0d9488; --pacer-ink: #0b766d; --pacer-strong: #0f766e;
  --skim: #f59e0b; --skim-ink: #92400e; --skim-strong: #b45309;
  --scan: #e11d48; --scan-ink: #be123c; --scan-strong: #be123c;
  --summary: #7c3aed; --summary-ink: #6d28d9; --summary-strong: #6d28d9;
  /* 공통 컴포넌트가 쓰는 이름 (예전 이름과 호환) */
  --speak: var(--brand); --speak-ink: var(--brand-ink); --speak-strong: #0f766e;
  --review: #e5484d; --review-ink: #c0281d; --review-strong: #d92d20;
  --shadow: var(--summary); --shadow-ink: var(--summary-ink); --shadow-strong: var(--summary-strong);
  --free: var(--test); --free-ink: var(--test-ink); --free-strong: var(--test-strong);
  --vocab: var(--pacer); --vocab-ink: var(--pacer-ink); --vocab-strong: var(--pacer-strong);
  --lesson: var(--test); --lesson-ink: var(--test-ink); --lesson-strong: var(--test-strong);
  --talk: var(--skim); --talk-ink: var(--skim-ink); --talk-strong: var(--skim-strong);
  --accent: var(--brand);
  --accent-ink: var(--brand-ink);
  --accent-strong: #0f766e;
  --on-accent: #ffffff;

  --ok: #12b76a;
  --ok-bg: #e3f8ed;
  --ok-ink: #027a48;
  --warn-ink: #8a5300;
  --warn: #f5a524;
  --warn-bg: #fff4dc;
  --bad: #e5484d;
  --bad-bg: #fdecec;

  --radius: 18px;
  --radius-sm: 12px;
  --shadow-1: 0 1px 2px rgba(21, 32, 29, 0.06), 0 4px 16px rgba(21, 32, 29, 0.06);
  --shadow-2: 0 8px 30px rgba(21, 32, 29, 0.12);
  --font: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Segoe UI", sans-serif;
  --read-font: "Pretendard Variable", Pretendard, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0e1513;
    --surface: #16201d;
    --surface-2: #1f2b27;
    --ink: #e8efec;
    --ink-2: #bccac5;
    --muted: #8fa09a;
    --line: #2a3733;
    --brand-ink: #5eead4;
    --mark: #6b4e0b;
    --ok-bg: #0f3324; --ok-ink: #4ade80;
    --warn-bg: #3a2c10; --warn-ink: #f5b544;
    --bad-bg: #3d1a1c;
    --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.45);
    --shadow-2: 0 8px 30px rgba(0, 0, 0, 0.55);
    --test-ink: #a5b4fc; --pacer-ink: #5eead4; --skim-ink: #fcd34d; --scan-ink: #fda4af; --summary-ink: #c4b5fd; --review-ink: #fb7d74;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e1513;
  --surface: #16201d;
  --surface-2: #1f2b27;
  --ink: #e8efec;
  --ink-2: #bccac5;
  --muted: #8fa09a;
  --line: #2a3733;
  --brand-ink: #5eead4;
  --mark: #6b4e0b;
  --ok-bg: #0f3324; --ok-ink: #4ade80;
  --warn-bg: #3a2c10; --warn-ink: #f5b544;
  --bad-bg: #3d1a1c;
  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.45);
  --shadow-2: 0 8px 30px rgba(0, 0, 0, 0.55);
  --test-ink: #a5b4fc; --pacer-ink: #5eead4; --skim-ink: #fcd34d; --scan-ink: #fda4af; --summary-ink: #c4b5fd; --review-ink: #fb7d74;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
}
button { font: inherit; color: inherit; cursor: pointer; }
button:disabled { cursor: default; opacity: 0.5; }
input, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, p { margin: 0; }
a { color: inherit; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.icon { display: inline-flex; line-height: 0; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 60%, transparent); outline-offset: 2px; }

/* ---------------------------------------------------------------- 앱 셸 */
.app { min-height: 100vh; display: flex; }
.sidenav {
  width: 232px; flex-shrink: 0; padding: 24px 14px; border-right: 1px solid var(--line);
  position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; gap: 4px; background: var(--bg);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; padding: 6px 12px 22px; letter-spacing: -0.02em; text-decoration: none; color: inherit; line-height: 1.2; }
.sidenav .brand { font-size: 20px; }
.brand-mark {
  min-width: 34px; height: 34px; padding: 0 7px; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; color: #fff; font-size: 15px; letter-spacing: -0.03em; font-weight: 800;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}
.nav-item {
  display: flex; align-items: center; gap: 12px; padding: 11px 14px; border-radius: 12px; border: 0; background: none;
  text-align: left; font-weight: 600; color: var(--ink-2); text-decoration: none;
}
.nav-item:hover { background: var(--surface-2); }
.nav-item.active { background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent-ink); }
.nav-sep { border: 0; border-top: 1px solid var(--line); margin: 10px 8px; width: auto; }
.sidenav-foot { margin-top: auto; display: flex; align-items: center; gap: 8px; }
.sidenav-foot .user-chip { flex: 1; margin-top: 0; min-width: 0; }
.theme-toggle { width: 40px; height: 40px; }

.main { flex: 1; min-width: 0; }
.page { max-width: 1040px; margin: 0 auto; padding: 28px 28px 120px; }
.page-narrow { max-width: 640px; }

.tabbar { display: none; }

@media (max-width: 820px) {
  .sidenav { display: none; }
  .page { padding: 18px 16px 110px; }
  .tabbar {
    display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 20; background: var(--surface);
    border-top: 1px solid var(--line); padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
  }
  .tabbar .nav-item { flex: 1; flex-direction: column; gap: 2px; font-size: 11px; padding: 6px 2px; justify-content: center; align-items: center; min-width: 0; white-space: nowrap; }
  
}

/* 전체 화면 모드 (훈련) */
.focus { min-height: 100vh; display: flex; flex-direction: column; }
.focus-top {
  position: sticky; top: 0; z-index: 10; background: var(--bg); display: flex; align-items: center; gap: 14px;
  padding: 14px 20px; max-width: 760px; width: 100%; margin: 0 auto;
}
.focus-body { flex: 1; width: 100%; max-width: 680px; margin: 0 auto; padding: 8px 20px 24px; display: flex; flex-direction: column; }
.focus-foot { position: sticky; bottom: 0; background: linear-gradient(to top, var(--bg) 75%, transparent); padding: 16px 20px calc(18px + env(safe-area-inset-bottom)); }
.focus-foot-inner { max-width: 680px; margin: 0 auto; }

/* ---------------------------------------------------------------- 기본 컴포넌트 */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-1); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: 14px;
  padding: 14px 22px; font-weight: 700; font-size: 16px; background: var(--ink); color: var(--bg);
  transition: transform 0.06s, filter 0.15s; text-decoration: none;
}
.btn:active { transform: translateY(1px); }
.btn:hover:not(:disabled) { filter: brightness(1.08); }
.btn-block { width: 100%; }
.btn-accent { background: var(--accent-strong); color: var(--on-accent); box-shadow: 0 3px 0 color-mix(in srgb, var(--accent-strong) 70%, #000); }
.btn-ghost { background: transparent; color: var(--ink-2); border: 1.5px solid var(--line); }
.btn-soft { background: var(--surface-2); color: var(--ink); }
.btn-sm { padding: 8px 14px; font-size: 14px; border-radius: 10px; }
.icon-btn {
  width: 42px; height: 42px; border-radius: 50%; border: 1.5px solid var(--line); background: var(--surface);
  display: inline-grid; place-items: center; color: var(--ink-2); flex-shrink: 0;
}
.icon-btn:hover { border-color: var(--ink-2); }

.icon-btn.plain { border: 0; background: none; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 99px; font-size: 13px; font-weight: 600; background: var(--surface-2); color: var(--ink-2); }
.tag { display: inline-block; padding: 2px 9px; border-radius: 8px; font-size: 12px; font-weight: 700; color: #fff; }
.mode-test { --accent: var(--test); --accent-ink: var(--test-ink); --accent-strong: var(--test-strong); --on-accent: #fff; }
.mode-pacer { --accent: var(--pacer); --accent-ink: var(--pacer-ink); --accent-strong: var(--pacer-strong); --on-accent: #fff; }
.mode-skim { --accent: var(--skim); --accent-ink: var(--skim-ink); --accent-strong: var(--skim-strong); --on-accent: #fff; }
.mode-scan { --accent: var(--scan); --accent-ink: var(--scan-ink); --accent-strong: var(--scan-strong); --on-accent: #fff; }
.mode-summary { --accent: var(--summary); --accent-ink: var(--summary-ink); --accent-strong: var(--summary-strong); --on-accent: #fff; }

.progress { flex: 1; height: 12px; background: var(--line); border-radius: 99px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--accent); border-radius: 99px; transition: width 0.4s ease; }
.ring { position: relative; display: inline-grid; place-items: center; color: var(--accent); }
.ring svg circle { transition: stroke-dashoffset 0.6s ease; }
.ring-label { position: absolute; font-weight: 800; font-size: 14px; color: var(--ink); }

.spinner-wrap { display: grid; place-items: center; gap: 12px; padding: 40px 0; }
.spinner { width: 36px; height: 36px; border: 4px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; }

.toast {
  position: fixed; left: 50%; top: 18px; transform: translate(-50%, -20px); opacity: 0; z-index: 100;
  background: var(--ink); color: var(--bg); padding: 12px 18px; border-radius: 12px; max-width: min(92vw, 480px);
  font-size: 14px; transition: all 0.25s; box-shadow: var(--shadow-2);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 50% { opacity: 0.55; } }
@keyframes pop { from { transform: scale(0.96); opacity: 0; } to { transform: none; opacity: 1; } }
@keyframes slideup { from { transform: translateY(16px); opacity: 0; } to { transform: none; opacity: 1; } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

/* ---------------------------------------------------------------- 입력 */
.type-row { display: none; width: 100%; gap: 8px; }

.type-row .text-input { flex: 1; width: auto; min-width: 0; }

.text-input { width: 100%; padding: 13px 16px; border-radius: 14px; border: 1.5px solid var(--line); background: var(--surface); font-size: 16px; }
.text-input:focus { outline: none; border-color: var(--accent); }

.link-btn { background: none; border: 0; padding: 0; color: var(--ink-2); font-size: 14px; font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.link-btn:hover { color: var(--accent-ink); }