:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1d2129;
  --muted: #6b7280;
  --border: #e3e5e8;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --accent: #059669;
  --accent-hover: #047857;
  --danger: #dc2626;
  --compress: #7c3aed;
  --compress-hover: #6d28d9;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171c;
    --card: #1f2229;
    --text: #e8eaed;
    --muted: #9aa0a9;
    --border: #2f333b;
    --primary: #3b82f6;
    --primary-hover: #60a5fa;
    --accent: #10b981;
    --accent-hover: #34d399;
    --danger: #f87171;
    --compress: #8b5cf6;
    --compress-hover: #a78bfa;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Pretendard", "Malgun Gothic", system-ui, sans-serif;
  line-height: 1.5;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 16px;
}

h1 { font-size: 1.8rem; margin: 0 0 8px; }
.subtitle { color: var(--muted); margin: 0 0 32px; }

a.back {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--muted);
  text-decoration: none;
}
a.back:hover { color: var(--text); }

/* ----- 메인 화면 ----- */
.menu {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 760px) { .menu { grid-template-columns: 1fr; } }

.menu-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 40px 20px;
  border-radius: 16px;
  color: #fff;
  text-decoration: none;
  font-size: 1.3rem;
  font-weight: 700;
  transition: transform .15s, background .15s;
}
.menu-btn:hover { transform: translateY(-3px); }
.menu-btn svg { width: 56px; height: 56px; }
.menu-btn small { font-size: .85rem; font-weight: 400; opacity: .85; text-align: center; }
.mine-link {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  margin-top: 16px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  color: var(--text);
  font-size: 1.15rem;
  font-weight: 700;
  text-decoration: none;
}
.mine-link:hover { border-color: var(--primary); }
.mine-link small { color: var(--muted); font-size: .9rem; font-weight: 400; }
.top-links { display: flex; justify-content: space-between; align-items: baseline; }
.menu-btn.compress { background: var(--compress); }
.menu-btn.compress:hover { background: var(--compress-hover); }
.submit.compress { background: var(--compress); }
.warn {
  margin: 16px 0 0;
  padding: 10px 14px;
  border-radius: 8px;
  background: color-mix(in srgb, #f59e0b 14%, var(--card));
  font-size: .9rem;
}
.menu-btn.cut { background: var(--primary); }
.menu-btn.cut:hover { background: var(--primary-hover); }
.menu-btn.audio { background: var(--accent); }
.menu-btn.audio:hover { background: var(--accent-hover); }

/* ----- 작업 페이지 ----- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  margin-bottom: 20px;
}

label { display: block; font-weight: 600; margin-bottom: 6px; }

input[type="file"] { width: 100%; }

input[type="text"], select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

video {
  width: 100%;
  max-height: 360px;
  margin-top: 16px;
  border-radius: 10px;
  background: #000;
}

.row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
@media (max-width: 560px) { .row { grid-template-columns: 1fr; } }

.field { margin-top: 16px; }
.hint { color: var(--muted); font-size: .85rem; margin-top: 4px; }

button {
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: .95rem;
  cursor: pointer;
}
button:hover { border-color: var(--muted); }
.small-btn { margin-top: 8px; width: 100%; }

.submit {
  width: 100%;
  padding: 14px;
  border: none;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
}
.submit.cut { background: var(--primary); }
.submit.audio { background: var(--accent); }
.submit:disabled { opacity: .5; cursor: not-allowed; }

.radio-group label { display: flex; gap: 8px; align-items: flex-start; font-weight: 400; margin-bottom: 8px; }

.progress { display: none; margin-top: 16px; }
.progress.show { display: block; }
.bar { height: 10px; background: var(--border); border-radius: 5px; overflow: hidden; }
.bar > div { height: 100%; width: 0; background: var(--primary); transition: width .2s; }
.status { margin-top: 8px; color: var(--muted); }
.status.error { color: var(--danger); }

/* ----- 파일 끌어다 놓기 ----- */
.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 28px 16px;
  border: 2px dashed var(--border);
  border-radius: 12px;
  background: var(--bg);
  font-weight: 400;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.dropzone:hover, body.dragging .dropzone { border-color: var(--primary); }
.dropzone svg { width: 40px; height: 40px; color: var(--primary); }
.dz-main { font-weight: 700; }
.dz-sub { color: var(--muted); font-size: .9rem; }
.dz-btn {
  margin-top: 4px;
  padding: 9px 20px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-size: .95rem;
  font-weight: 700;
}
.dropzone:hover .dz-btn { background: var(--primary-hover); }
.dz-file:empty { display: none; }
.dz-file { margin-top: 4px; font-size: .9rem; font-weight: 600; word-break: break-all; }
.dropzone.has-file { border-style: solid; border-color: var(--accent); }
.dropzone.has-file .dz-file { color: var(--accent); }
.dropzone.error { border-color: var(--danger); }
.dropzone.error .dz-file { color: var(--danger); }

.file-details { margin-top: 16px; }
.fd-label { margin-bottom: 6px; color: var(--muted); font-size: .85rem; font-weight: 600; }
.fd-row { display: flex; gap: 12px; align-items: center; }
.fd-text { min-width: 0; flex: 1; }
.thumb {
  flex: none;
  width: 96px;
  height: 64px;
  margin: 0;
  border-radius: 8px;
  object-fit: cover;
  background: #000;
}
.fd-name { font-weight: 700; word-break: break-all; }
.fd-meta { margin-top: 2px; color: var(--muted); font-size: .9rem; font-variant-numeric: tabular-nums; }

.drop-overlay {
  display: none;
  position: fixed;
  inset: 12px;
  z-index: 100;
  align-items: center;
  justify-content: center;
  border: 3px dashed var(--primary);
  border-radius: 20px;
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  backdrop-filter: blur(2px);
  pointer-events: none;
}
.drop-overlay div {
  padding: 16px 24px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
}
body.dragging .drop-overlay { display: flex; }

/* ----- 구간 자르기 ----- */
[hidden] { display: none !important; }

.player {
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--bg);
  padding: 8px 0 12px;
  margin-bottom: 8px;
}
.player video { margin-top: 0; max-height: 40vh; }
body.audio-mode .player video { height: 54px; background: transparent; }
body.audio-mode .action.audio { display: none; }
.now { margin-top: 6px; color: var(--muted); text-align: center; }
.now b { color: var(--text); font-variant-numeric: tabular-nums; }

.container.wide { max-width: 920px; }

.segment { padding: 12px 16px; margin-bottom: 10px; }
.seg-line { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.seg-title { flex: none; width: 52px; }
.tilde { color: var(--muted); }
.invisible { visibility: hidden; }

.time-group { display: flex; flex: none; align-items: center; gap: 6px; }
.time-group input {
  width: 104px;
  padding: 8px 10px;
  font-size: .95rem;
  font-variant-numeric: tabular-nums;
  text-align: center;
}
.time-group input[readonly] { color: var(--muted); }
.time-group button {
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--card);
  color: var(--primary);
  border-color: var(--primary);
  font-size: .8rem;
  font-weight: 600;
  white-space: nowrap;
}
.time-group button:hover { background: var(--primary); color: #fff; }

.seg-actions { display: flex; gap: 6px; margin-left: auto; }
.action {
  flex: none;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
}
.segment .remove { flex: none; padding: 6px 10px; color: var(--muted); }
.segment .seg-status { margin-top: 6px; font-size: .9rem; }
.segment .seg-bar { margin-top: 10px; }
.segment .seg-bar > div { background: var(--accent); }

/* 좁은 화면: 제목/✕ → 시작 → 끝 → 버튼 */
@media (max-width: 640px) {
  .seg-title { order: -2; flex: 1 1 calc(100% - 60px); }
  .segment .remove { order: -1; }
  .tilde { display: none; }
  .time-group { flex: 1 1 100%; }
  .time-group input { flex: 1; min-width: 0; }
  .time-group button { width: 76px; }
  .time-group .set-end { order: -1; }
  .seg-actions { flex: 1 1 100%; margin-left: 0; }
  .action { flex: 1; }
}
.action.extract { background: var(--primary); border-color: var(--primary); color: #fff; }
.action.download { background: var(--accent); color: #fff; }
.action.audio { background: var(--card); color: var(--accent); border: 1px solid var(--accent); }
.action:disabled { opacity: .5; cursor: not-allowed; }
.seg-status:empty { display: none; }

.add-btn {
  width: 100%;
  padding: 14px;
  border: 2px dashed color-mix(in srgb, var(--primary) 45%, transparent);
  background: color-mix(in srgb, var(--primary) 8%, var(--card));
  color: var(--primary);
  font-weight: 700;
}
.add-btn:hover {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 15%, var(--card));
}

/* ----- 내려받기 알림 ----- */
#toasts {
  position: fixed;
  left: 50%;
  bottom: 16px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: min(480px, calc(100% - 32px));
  transform: translateX(-50%);
}
.toast {
  padding: 12px 16px;
  border-radius: 10px;
  background: var(--text);
  color: var(--bg);
  font-size: .95rem;
  font-weight: 600;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .25);
  cursor: pointer;
  animation: toast-in .2s ease-out;
}
.toast.ok { background: var(--accent); color: #fff; }
.toast.error { background: var(--danger); color: #fff; }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } }

.result { display: none; margin-top: 16px; }
.result.show { display: block; }
.result a {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
}