@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.css");
@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;700&family=JetBrains+Mono:wght@400;500;700&display=swap");

:root {
  --ink: #0C0F13;
  --ink-2: #141A21;
  --ink-3: #1C242E;
  --line: rgba(255, 255, 255, .09);
  --line-strong: rgba(255, 255, 255, .18);
  --fg: #E9EEF5;
  --fg-mute: #8B96A5;
  --fg-dim: #5D6773;
  --live: #FF5C5C;
  --ok: #7FD6A2;

  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --disp: "Space Grotesk", "Pretendard Variable", Pretendard, sans-serif;
  --body: "Pretendard Variable", Pretendard, -apple-system, sans-serif;

  --r: 10px;
  --pad: 20px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--ink);
  color: var(--fg);
  font-family: var(--body);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button, input, textarea, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid #7FA8FF; outline-offset: 2px; border-radius: 4px; }

/* ── 레이아웃 ─────────────────────────────── */
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px 96px; }

header.top {
  position: sticky; top: 0; z-index: 40;
  background: rgba(12, 15, 19, .86);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.top-in {
  max-width: 1120px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
}
.mark {
  font-family: var(--mono); font-weight: 700; font-size: 13px;
  letter-spacing: .06em; text-decoration: none;
}
.mark span { color: var(--fg-dim); }
.top nav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.top nav a, .ghost {
  font-family: var(--mono); font-size: 12px; letter-spacing: .04em;
  padding: 6px 10px; border-radius: 6px; text-decoration: none;
  color: var(--fg-mute); border: 1px solid transparent;
  background: none; cursor: pointer;
}
.top nav a:hover, .ghost:hover { color: var(--fg); background: var(--ink-2); }
.top nav a.on { color: var(--fg); border-color: var(--line-strong); }

/* ── 타이포 ──────────────────────────────── */
.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--fg-dim);
}
h1 { font-family: var(--disp); font-size: clamp(30px, 5vw, 46px); line-height: 1.08; margin: 8px 0 0; font-weight: 500; letter-spacing: -.02em; }
h2 { font-family: var(--disp); font-size: 19px; font-weight: 500; margin: 0; letter-spacing: -.01em; }
h3 { font-size: 15px; margin: 0; font-weight: 600; }
.mono { font-family: var(--mono); }
.mute { color: var(--fg-mute); }
.dim { color: var(--fg-dim); }
.small { font-size: 13px; }
.tiny { font-size: 11.5px; }

section.block { margin-top: 44px; }
.block-head {
  display: flex; align-items: baseline; gap: 12px;
  padding-bottom: 10px; margin-bottom: 16px; border-bottom: 1px solid var(--line);
}
.block-head .eyebrow { margin-left: auto; }

/* ── 히어로 ──────────────────────────────── */
.hero { padding: 46px 0 8px; display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: end; }
.hero-week {
  font-family: var(--mono); text-align: right; line-height: 1;
}
.hero-week b { display: block; font-size: 62px; font-weight: 700; letter-spacing: -.04em; }
.hero-week i { font-style: normal; font-size: 11px; letter-spacing: .18em; color: var(--fg-dim); text-transform: uppercase; }

/* ── 16주 레일 (시그니처) ─────────────────── */
.rail { display: grid; grid-template-columns: repeat(16, 1fr); gap: 3px; margin-top: 6px; }
.rail-cell {
  position: relative; height: 46px; border-radius: 4px;
  background: var(--ink-2); border: 1px solid var(--line);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 10px; color: var(--fg-dim);
  cursor: pointer; padding: 0; transition: transform .12s ease, border-color .12s ease;
}
.rail-cell:hover { transform: translateY(-2px); border-color: var(--line-strong); color: var(--fg); }
.rail-cell.past { opacity: .45; }
.rail-cell.now { border-color: currentColor; box-shadow: inset 0 0 0 1px currentColor; }
.rail-cell .dot { width: 5px; height: 5px; border-radius: 50%; margin-top: 4px; background: currentColor; opacity: .0; }
.rail-cell.mark .dot { opacity: 1; }
.rail-legend { display: flex; gap: 16px; margin-top: 10px; }

/* ── 카드 ────────────────────────────────── */
.card {
  background: var(--ink-2); border: 1px solid var(--line);
  border-radius: var(--r); padding: var(--pad);
}
.grid { display: grid; gap: 12px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }

/* 오늘 수업 = 시간 축 */
.spine { position: relative; margin-left: 74px; }
.spine::before {
  content: ""; position: absolute; left: -30px; top: 6px; bottom: 6px;
  width: 1px; background: var(--line);
}
.slot { position: relative; margin-bottom: 12px; }
.slot .clock {
  position: absolute; left: -104px; top: 16px; width: 62px; text-align: right;
  font-family: var(--mono); font-size: 12px; color: var(--fg-mute);
}
.slot .clock em { display: block; font-style: normal; font-size: 10.5px; color: var(--fg-dim); }
.slot::before {
  content: ""; position: absolute; left: -34px; top: 22px;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--ink); border: 2px solid currentColor;
}
.slot-card {
  display: flex; gap: 16px; align-items: center;
  border: 1px solid var(--line); border-left: 3px solid currentColor;
  background: var(--ink-2); border-radius: var(--r); padding: 16px 18px;
  text-decoration: none;
}
.slot-card:hover { background: var(--ink-3); }
.slot-card .body { min-width: 0; flex: 1; }
.slot-card .topic { color: var(--fg-mute); font-size: 13px; margin-top: 3px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.slot-card .go { font-family: var(--mono); font-size: 11px; color: var(--fg-dim); white-space: nowrap; }
.slot.done .slot-card { opacity: .5; }

/* 과목 카드 */
.course-card { display: block; text-decoration: none; position: relative; overflow: hidden; }
.course-card::after {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 3px; background: currentColor;
}
.course-card:hover { background: var(--ink-3); }
.bars { display: flex; height: 6px; border-radius: 3px; overflow: hidden; margin-top: 14px; background: var(--ink-3); }
.bars i { display: block; height: 100%; }
.bar-key { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.bar-key span { font-family: var(--mono); font-size: 10.5px; color: var(--fg-dim); }
.bar-key b { color: var(--fg-mute); font-weight: 500; }

/* ── 시간표 ──────────────────────────────── */
.tt { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.tt th { font-family: var(--mono); font-weight: 500; font-size: 11px; color: var(--fg-dim); padding: 8px; border-bottom: 1px solid var(--line); }
.tt td { border: 1px solid var(--line); height: 44px; vertical-align: top; padding: 0; width: 18%; }
.tt td.time { border: none; font-family: var(--mono); font-size: 10.5px; color: var(--fg-dim); text-align: right; padding-right: 10px; width: 10%; }
.tt .ev { height: 100%; padding: 6px 8px; border-radius: 4px; border-left: 3px solid currentColor; display: block; text-decoration: none; }
.tt .ev b { font-weight: 600; font-size: 12px; }
.tt .ev em { font-style: normal; display: block; font-family: var(--mono); font-size: 10px; color: var(--fg-dim); }

/* ── 과목 상세 ───────────────────────────── */
.course-hero { border-top: 3px solid currentColor; padding-top: 22px; margin-top: 8px; }
.meta { display: flex; flex-wrap: wrap; gap: 6px 22px; margin-top: 14px; }
.meta div { font-size: 13px; }
.meta .k { font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--fg-dim); display: block; }

/* 세션 */
.session-list { display: flex; flex-direction: column; gap: 8px; }
.session-row {
  display: flex; align-items: center; gap: 14px; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: var(--r); background: var(--ink-2);
  cursor: pointer; text-align: left; width: 100%;
}
.session-row:hover { background: var(--ink-3); }
.session-row .w { font-family: var(--mono); font-size: 11px; color: var(--fg-dim); width: 62px; flex: none; }
.session-row .t { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13.5px; }
.session-row .flags { display: flex; gap: 5px; flex: none; }
.flag { font-family: var(--mono); font-size: 10px; padding: 2px 6px; border-radius: 4px; border: 1px solid var(--line-strong); color: var(--fg-mute); }
.flag.on { background: currentColor; border-color: transparent; color: var(--ink); font-weight: 700; }

/* 녹음 패널 */
.rec-bar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.btn {
  border: 1px solid var(--line-strong); background: var(--ink-3); color: var(--fg);
  padding: 9px 16px; border-radius: 8px; cursor: pointer;
  font-family: var(--mono); font-size: 12px; letter-spacing: .03em;
}
.btn:hover { border-color: #fff5; }
.btn.primary { background: var(--fg); color: var(--ink); border-color: var(--fg); font-weight: 700; }
.btn.danger { background: var(--live); border-color: var(--live); color: #fff; font-weight: 700; }
.btn[disabled] { opacity: .4; cursor: not-allowed; }
.pulse { width: 9px; height: 9px; border-radius: 50%; background: var(--live); animation: p 1.2s infinite; }
@keyframes p { 0%, 100% { opacity: 1 } 50% { opacity: .25 } }
@media (prefers-reduced-motion: reduce) { .pulse { animation: none } * { transition: none !important } }

.transcript {
  max-height: 260px; overflow: auto; font-size: 13.5px; line-height: 1.7;
  background: var(--ink); border: 1px solid var(--line); border-radius: 8px; padding: 14px; margin-top: 14px;
  white-space: pre-wrap; word-break: break-word;
}
.transcript .interim { color: var(--fg-dim); }

textarea.note {
  width: 100%; min-height: 220px; resize: vertical;
  background: var(--ink); border: 1px solid var(--line); border-radius: 8px;
  padding: 14px; line-height: 1.75; font-size: 14px;
}
textarea.note::placeholder { color: var(--fg-dim); }

.summary { font-size: 14px; }
.summary h4 { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--fg-dim); margin: 18px 0 6px; }
.summary h4:first-child { margin-top: 0; }
.summary ul { margin: 0; padding-left: 18px; }
.summary li { margin-bottom: 5px; }
.summary .chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-family: var(--mono); font-size: 11px; padding: 3px 8px; border-radius: 999px; border: 1px solid var(--line-strong); color: var(--fg-mute); }

/* D-day 스트립 */
.dday-strip { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; }
.dday-chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 11.5px; padding: 6px 12px;
  border: 1px solid currentColor; border-radius: 999px; text-decoration: none;
}
.dday-chip b { font-weight: 700; }

/* 오디오 첨부 */
.audio-list { display: flex; flex-direction: column; gap: 12px; }
.audio-item { border-top: 1px solid var(--line); padding-top: 12px; }
.audio-item:first-child { border-top: none; padding-top: 0; }

/* 할 일 */
.todo { display: flex; align-items: flex-start; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--line); text-decoration: none; }
.todo:last-child { border-bottom: none; }
a.todo:hover { color: var(--fg); }
.todo input { margin-top: 4px; accent-color: #7FA8FF; }
.todo .x { margin-left: auto; background: none; border: none; color: var(--fg-dim); cursor: pointer; }
.todo.done label { text-decoration: line-through; color: var(--fg-dim); }
.add-row { display: flex; gap: 8px; margin-top: 12px; }
.add-row input {
  flex: 1; background: var(--ink); border: 1px solid var(--line);
  border-radius: 8px; padding: 9px 12px;
}

/* 모달 */
.scrim { position: fixed; inset: 0; background: rgba(4, 6, 9, .74); z-index: 60; display: flex; align-items: flex-start; justify-content: center; overflow: auto; padding: 40px 16px; }
.modal { background: var(--ink-2); border: 1px solid var(--line-strong); border-radius: 14px; width: 100%; max-width: 760px; padding: 26px; }
.modal-head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.modal-head .ghost { margin-left: auto; }

/* 학기 허브 */
.sem-card { display: flex; align-items: center; gap: 16px; padding: 18px 20px; text-decoration: none; }
.sem-card .id { font-family: var(--mono); font-size: 22px; font-weight: 700; letter-spacing: -.02em; width: 92px; }
.sem-card.current { border-color: var(--line-strong); background: var(--ink-3); }
.badge { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; padding: 3px 8px; border-radius: 999px; border: 1px solid var(--line-strong); color: var(--fg-mute); margin-left: auto; }
.badge.live { background: var(--ok); color: var(--ink); border-color: transparent; font-weight: 700; }

.empty { border: 1px dashed var(--line-strong); border-radius: var(--r); padding: 26px; text-align: center; color: var(--fg-mute); font-size: 13.5px; }

footer { margin-top: 72px; padding-top: 20px; border-top: 1px solid var(--line); font-family: var(--mono); font-size: 11px; color: var(--fg-dim); display: flex; gap: 16px; flex-wrap: wrap; }

@media (max-width: 820px) {
  .g3, .g2 { grid-template-columns: 1fr; }
  .hero { grid-template-columns: 1fr; }
  .hero-week { text-align: left; }
  .hero-week b { font-size: 46px; }
  .spine { margin-left: 0; }
  .spine::before { display: none; }
  .slot::before { display: none; }
  .slot .clock { position: static; width: auto; text-align: left; margin-bottom: 5px; }
  .slot .clock em { display: inline; margin-left: 8px; }
  .rail { grid-template-columns: repeat(8, 1fr); }
  .tt { font-size: 11px; }
  .wrap { padding: 0 16px 72px; }
}