:root {
  --bg: #0f1420;
  --panel: #182030;
  --panel2: #1f2a3d;
  --line: #2b3850;
  --text: #e7edf6;
  --muted: #93a1b8;
  --accent: #4f8cff;
  --accent2: #2dd4a7;
  --bad: #ff6b6b;
  --good: #2dd4a7;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, "Noto Sans KR", sans-serif;
  line-height: 1.5;
}
header { padding: 24px 20px 8px; text-align: center; }
header h1 { margin: 0; font-size: 1.6rem; }
header .sub { margin: 4px 0 0; color: var(--muted); font-size: .9rem; }

.tabs { display: flex; gap: 8px; justify-content: center; padding: 16px 12px; }
.tab {
  background: var(--panel); color: var(--muted); border: 1px solid var(--line);
  padding: 10px 18px; border-radius: 999px; cursor: pointer; font-size: .95rem;
}
.tab.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.panel { display: none; max-width: 820px; margin: 0 auto; padding: 8px 16px 40px; }
.panel.active { display: block; }

.controls {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end;
  background: var(--panel); border: 1px solid var(--line);
  padding: 14px; border-radius: 14px;
}
.controls label { display: flex; flex-direction: column; gap: 4px; font-size: .8rem; color: var(--muted); }
.controls label.grow { flex: 1 1 200px; }
input, select {
  background: var(--panel2); color: var(--text); border: 1px solid var(--line);
  border-radius: 9px; padding: 9px 11px; font-size: .95rem;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }

button { font-family: inherit; }
button.primary {
  background: var(--accent); color: #fff; border: none; border-radius: 9px;
  padding: 10px 18px; font-size: .95rem; cursor: pointer;
}
button.primary:disabled { opacity: .5; cursor: progress; }
button.ghost {
  background: transparent; color: var(--accent); border: 1px solid var(--line);
  border-radius: 9px; padding: 8px 14px; cursor: pointer;
}

.passage, .score {
  margin-top: 18px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 14px; padding: 18px;
}
.passage-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.passage-head h2 { margin: 0; font-size: 1.2rem; flex: 1 1 auto; }
.badge { background: var(--accent2); color: #06281f; padding: 2px 10px; border-radius: 999px; font-size: .8rem; font-weight: 700; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0; }
.chips span { background: var(--panel2); border: 1px solid var(--line); color: var(--muted); padding: 3px 10px; border-radius: 999px; font-size: .82rem; }

.sentences { padding-left: 20px; margin: 8px 0; }
.sentences li { margin: 8px 0; padding: 4px 0; }
.sentences .s-row { display: flex; align-items: center; gap: 10px; }
.sentences .s-text { flex: 1; }
.sentences button { padding: 4px 10px; font-size: .8rem; }
.s-actions { display: flex; gap: 6px; }
.sentences .s-ko {
  margin: 4px 0 2px; padding: 6px 10px; color: var(--muted);
  background: var(--panel2); border-left: 3px solid var(--accent2); border-radius: 0 8px 8px 0;
  font-size: .92rem;
}
.sentences .s-actions button.open { background: var(--accent2); color: #06281f; border-color: var(--accent2); }
.sentences .s-actions button.dim { opacity: .4; }

.questions { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 12px; }
.questions .q { margin: 8px 0; }
.questions .q .a { color: var(--muted); font-size: .9rem; }

/* ── 토글(숨김/열림) ── */
.toggles { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 4px;
  border-top: 1px solid var(--line); padding-top: 14px; }
.toggle-btn {
  background: var(--panel2); color: var(--text); border: 1px solid var(--line);
  border-radius: 9px; padding: 8px 14px; cursor: pointer; font-size: .9rem;
}
.toggle-btn::before { content: "▸ "; color: var(--muted); }
.toggle-btn.open { background: var(--accent); color: #fff; border-color: var(--accent); }
.toggle-btn.open::before { content: "▾ "; color: #fff; }
.toggle-btn.dim { opacity: .45; }
.collapse {
  margin-top: 10px; background: var(--panel2); border: 1px solid var(--line);
  border-radius: 10px; padding: 14px;
}
.collapse .empty { color: var(--muted); font-size: .9rem; }
.translation { margin: 0; line-height: 1.7; white-space: pre-wrap; }
dl.deflist { margin: 0; display: grid; grid-template-columns: minmax(120px, max-content) 1fr;
  gap: 6px 16px; }
dl.deflist dt { font-weight: 700; color: var(--accent2); }
dl.deflist dd { margin: 0; color: var(--text); }

.hint { color: var(--muted); font-size: .9rem; }
.record-row { display: flex; align-items: center; gap: 12px; margin-top: 16px; flex-wrap: wrap; }
.record-row audio { height: 38px; }
.recording { background: var(--bad) !important; animation: pulse 1s infinite; }
@keyframes pulse { 50% { opacity: .6; } }

.score-top { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
.accuracy { font-size: 2.4rem; font-weight: 800; min-width: 120px; text-align: center; }
.score-detail { flex: 1; font-size: .95rem; }
.score-detail b { color: var(--muted); font-weight: 600; margin-right: 6px; }
.counts { margin-top: 6px; color: var(--muted); font-size: .85rem; }

/* ── 토익스피킹 ── */
.tc-text { font-size: 1.1rem; line-height: 1.7; margin: 6px 0 4px; }
.tc-image { max-width: 100%; border-radius: 12px; border: 1px solid var(--line); margin: 8px 0; }
.tc-exam { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 12px; }
.tc-timer { font-weight: 700; font-size: 1.05rem; color: var(--muted); }
.tc-timer.prep { color: var(--accent); }
.tc-timer.rec { color: var(--bad); animation: pulse 1s infinite; }
.rub { display: flex; align-items: center; gap: 10px; margin: 5px 0; }
.rub .rk { min-width: 54px; color: var(--muted); }
.rubbar { flex: 1; max-width: 220px; height: 8px; background: var(--panel2); border-radius: 999px; overflow: hidden; }
.rubbar i { display: block; height: 100%; background: var(--accent2); }
.tc-feedback { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 12px; line-height: 1.6; }
.tc-feedback b { color: var(--accent2); }
.tc-transcript { margin-top: 10px; color: var(--muted); font-size: .9rem; }

.msg { margin-top: 14px; color: var(--muted); font-size: .9rem; min-height: 1.2em; }
.msg.error { color: var(--bad); }
.hidden { display: none !important; }

footer { text-align: center; color: var(--muted); font-size: .78rem; padding: 20px; }

/* ── 인증 오버레이 ── */
.overlay {
  position: fixed; inset: 0; background: var(--bg);
  display: flex; align-items: center; justify-content: center; padding: 20px; z-index: 50;
}
.auth-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 16px;
  padding: 28px; width: 100%; max-width: 380px; text-align: center;
}
.auth-card h1 { margin: 0 0 2px; font-size: 1.5rem; }
.auth-card .sub { margin: 0 0 18px; color: var(--muted); font-size: .85rem; }
.auth-form { display: flex; flex-direction: column; gap: 10px; text-align: left; }
.auth-form h2 { margin: 0 0 6px; font-size: 1.1rem; }
.auth-form input { width: 100%; }
.auth-form button { margin-top: 4px; }
.switch { text-align: center; color: var(--muted); font-size: .88rem; margin: 8px 0 0; }
.switch a { color: var(--accent); cursor: pointer; }
.msg.ok { color: var(--good); }

/* ── 상단바 ── */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 820px; margin: 0 auto; padding: 16px 16px 0;
}
.topbar .brand { font-weight: 700; font-size: 1.15rem; }
.userbox { display: flex; align-items: center; gap: 12px; }
.userbox #whoami { color: var(--muted); font-size: .88rem; }

/* ── 관리자 ── */
.admin-block {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 18px; margin-top: 16px;
}
.admin-block h3 { margin: 0 0 4px; }
.table-wrap { overflow-x: auto; }
table.users { width: 100%; border-collapse: collapse; font-size: .9rem; margin-top: 10px; }
table.users th, table.users td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
table.users th { color: var(--muted); font-weight: 600; }
table.users .acts { display: flex; gap: 6px; }
table.users .acts button { padding: 4px 10px; font-size: .8rem; }
.st { padding: 2px 9px; border-radius: 999px; font-size: .78rem; font-weight: 700; }
.st.pending { background: #5a4a1f; color: #ffd778; }
.st.ok { background: #1f4a3a; color: #6ee7b7; }
.st.rej { background: #5a2424; color: #ff9b9b; }