/* SlotMate — 화면 설계서 v0.2 2절 시각 기준 */
:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1c2536;
  --muted: #667085;
  --line: #e4e7ec;
  --primary: #2952cc;
  --primary-hover: #2145b0;
  --ok: #16794a;
  --ok-bg: #e6f4ec;
  --wait: #b45309;
  --wait-bg: #fdf1e2;
  --stop: #b42318;
  --stop-bg: #fdeceb;
  --off: #667085;
  --off-bg: #eef0f3;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Segoe UI", sans-serif;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 18px; margin: 0 0 12px; }
.muted { color: var(--muted); }
.hidden { display: none !important; }

/* 헤더 */
.header {
  position: sticky; top: 0; z-index: 10;
  background: var(--surface); border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: 1080px; margin: 0 auto; padding: 12px 16px;
  display: flex; align-items: center; gap: 16px;
}
.header-inner.wide { max-width: 1280px; }
.logo { font-weight: 800; font-size: 18px; color: var(--text); }
.logo span { color: var(--primary); }
.nav { display: flex; gap: 14px; flex: 1; }
.nav a { color: var(--muted); font-weight: 600; }
.nav a.active { color: var(--text); }
.nav a { white-space: nowrap; }
.nav .count {
  display: inline-block; min-width: 18px; padding: 0 5px; border-radius: 999px; background: var(--stop); color: #fff;
  font-size: 11px; line-height: 18px; text-align: center;
}

/* 알림 */
.notice {
  display: block; width: 100%; text-align: left; font: inherit; color: var(--text); cursor: pointer;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 18px;
}
.notice.unread { border-left: 4px solid var(--primary); }
.notice .head { display: flex; justify-content: space-between; gap: 12px; }
.notice .head b { font-size: 15px; }
.notice .when { color: var(--muted); font-size: 13px; white-space: nowrap; }
.notice p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }

/* 아이콘 */
.icon { display: inline-flex; width: 18px; height: 18px; flex: 0 0 auto; }
.icon svg { width: 100%; height: 100%; }

/* 관리자 왼쪽 메뉴 (A01) — 넓은 화면에서만 */
.sidebar { display: none; }
@media (min-width: 1100px) {
  body.admin-layout { padding-left: 220px; }
  .sidebar {
    display: flex; flex-direction: column; gap: 4px; position: fixed; inset: 0 auto 0 0; z-index: 20; width: 220px;
    background: var(--text); padding: 18px 12px;
  }
  .sidebar .logo { color: #fff; padding: 2px 12px 18px; }
  .sidebar .logo span { color: #8fa8f0; }
  .sidebar .logo small { display: block; font-size: 12px; font-weight: 600; color: #98a2b3; }
  .sidebar nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }
  .sidebar a:not(.logo) {
    display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 10px;
    color: #cfd4dc; font-weight: 600; font-size: 14px;
  }
  .sidebar a:not(.logo):hover { background: rgba(255, 255, 255, .06); text-decoration: none; }
  .sidebar nav a.active { background: var(--primary); color: #fff; }
  .sidebar .side-foot { font-size: 13px; color: #98a2b3; }
  .admin-layout .header .logo, .admin-layout .header .nav { display: none; }
  .admin-layout .header .account { margin-left: auto; }
}

/* 관리자 요약 카드 */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 8px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px;
}
.stat .label { color: var(--muted); font-size: 13px; font-weight: 600; }
.stat .value { font-size: 26px; font-weight: 800; }
.stat-icon { display: inline-flex; padding: 9px; border-radius: 12px; }
.stat-icon .icon { width: 20px; height: 20px; }
.stat-icon.primary { background: #eaeffc; color: var(--primary); }
.stat-icon.ok { background: var(--ok-bg); color: var(--ok); }
.stat-icon.wait { background: var(--wait-bg); color: var(--wait); }
.stat-icon.off { background: var(--off-bg); color: var(--off); }

/* 확정/정원 막대 */
.meter { display: flex; align-items: center; gap: 10px; min-width: 120px; }
.meter > span:first-child { min-width: 40px; font-variant-numeric: tabular-nums; }
.meter .bar { flex: 1; max-width: 90px; height: 6px; border-radius: 999px; background: var(--off-bg); overflow: hidden; }
.meter .bar span { display: block; height: 100%; border-radius: 999px; background: var(--ok); }
.meter.full .bar span { background: var(--wait); }
.account { display: flex; align-items: center; gap: 10px; font-size: 14px; }

.container { max-width: 1080px; margin: 0 auto; padding: 20px 16px 48px; }
.container.narrow { max-width: 420px; }
.container.wide { max-width: 1280px; }

/* 버튼·입력 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 40px; padding: 0 16px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--surface); color: var(--text); font: inherit; font-weight: 600; cursor: pointer;
}
.btn:hover { background: #f2f4f7; text-decoration: none; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-hover); }
.btn.wait { background: var(--wait); border-color: var(--wait); color: #fff; }
.btn.danger { color: var(--stop); border-color: #f4c7c3; }
.btn.small { min-height: 32px; padding: 0 10px; font-size: 13px; }
.btn:disabled { background: var(--off-bg); border-color: var(--off-bg); color: var(--off); cursor: not-allowed; }

input, select, textarea {
  width: 100%; min-height: 40px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 10px;
  background: #fff; color: var(--text); font: inherit;
}
textarea { min-height: 72px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid #c7d4f7; border-color: var(--primary); }
label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 4px; }
.field { margin-bottom: 14px; }
.field-error { color: var(--stop); font-size: 13px; margin-top: 4px; }
.form-error { background: var(--stop-bg); color: var(--stop); padding: 10px 12px; border-radius: 10px; margin-bottom: 14px; }
.row { display: flex; gap: 12px; }
.row > * { flex: 1; }

.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px;
}

/* 상태 배지 — 색과 문구 함께 */
.badge {
  display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 700;
  white-space: nowrap;
}
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.wait { background: var(--wait-bg); color: var(--wait); }
.badge.stop { background: var(--stop-bg); color: var(--stop); }
.badge.off { background: var(--off-bg); color: var(--off); }

/* 회원 — 날짜 줄·필터 */
.toolbar {
  position: sticky; top: 61px; z-index: 5; background: var(--bg); padding: 8px 0 12px;
}
.dates { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; scrollbar-width: thin; }
.date-chip {
  flex: 0 0 auto; width: 58px; padding: 6px 0; text-align: center; border-radius: 12px;
  border: 1px solid var(--line); background: var(--surface); cursor: pointer; font: inherit; color: var(--text);
}
.date-chip .dow { display: block; font-size: 12px; color: var(--muted); }
.date-chip .day { display: block; font-size: 17px; font-weight: 700; }
.date-chip.active { background: var(--text); border-color: var(--text); color: #fff; }
.date-chip.active .dow { color: #cfd4dc; }
.filters { display: flex; gap: 8px; align-items: center; margin-top: 10px; flex-wrap: wrap; }
.chip {
  padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface);
  font: inherit; font-weight: 600; cursor: pointer; color: var(--text);
}
.chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.search { flex: 1; min-width: 180px; max-width: 320px; margin-left: auto; }

.cat-tabs { display: flex; gap: 4px; margin-top: 10px; border-bottom: 1px solid var(--line); overflow-x: auto; }
.cat-tabs button {
  border: 0; background: none; padding: 8px 12px; font: inherit; font-weight: 700; color: var(--muted);
  border-bottom: 2px solid transparent; margin-bottom: -1px; cursor: pointer; white-space: nowrap;
}
.cat-tabs button.active { color: var(--text); border-bottom-color: var(--primary); }

.summary { display: flex; gap: 8px; margin: 4px 0 14px; flex-wrap: wrap; }

/* 회원 — 수업 카드 */
.session-list { display: flex; flex-direction: column; gap: 12px; }
.session-card {
  display: grid; grid-template-columns: 88px 1fr auto; gap: 16px; align-items: center;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px 20px;
}
.session-card .time { font-size: 20px; font-weight: 800; }
.session-card .time small { display: block; font-size: 12px; font-weight: 500; color: var(--muted); }
.session-card .title { font-weight: 700; font-size: 16px; }
.session-card .title a { color: var(--text); }
.session-card .meta { color: var(--muted); font-size: 14px; }
.session-card .counts { display: flex; gap: 10px; flex-wrap: wrap; font-size: 13px; margin-top: 6px; }
.session-card .action { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; min-width: 132px; }
.session-card .action .btn { width: 100%; }

.empty {
  text-align: center; padding: 48px 16px; color: var(--muted);
  background: var(--surface); border: 1px dashed var(--line); border-radius: var(--radius);
}

/* 상세 */
.detail-grid { display: grid; grid-template-columns: 120px 1fr; gap: 10px 16px; margin: 16px 0; }
.detail-grid dt { color: var(--muted); }
.detail-grid dd { margin: 0; }

/* 모달 */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 50; background: rgba(16, 24, 40, .45);
  display: flex; align-items: center; justify-content: center; padding: 16px;
}
.modal { width: 100%; max-width: 480px; max-height: calc(100vh - 32px); overflow: auto; }
.modal h2 { margin-bottom: 8px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 18px; flex-wrap: wrap; }

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 60;
  background: var(--text); color: #fff; padding: 10px 18px; border-radius: 10px; font-weight: 600;
}

.tabs { display: flex; gap: 4px; background: var(--off-bg); padding: 4px; border-radius: 12px; margin-bottom: 18px; }
.tabs button {
  flex: 1; border: 0; background: transparent; padding: 8px; border-radius: 9px; font: inherit; font-weight: 700;
  color: var(--muted); cursor: pointer;
}
.tabs button.active { background: var(--surface); color: var(--text); box-shadow: var(--shadow); }

/* 관리자 */
.admin-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.admin-head .spacer { flex: 1; }
.week-label { font-weight: 700; font-size: 17px; min-width: 210px; text-align: center; }

.timetable {
  display: grid; grid-template-columns: 56px repeat(7, minmax(0, 1fr));
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
}
.tt-head { padding: 10px 6px; text-align: center; font-weight: 700; border-bottom: 1px solid var(--line); font-size: 14px; }
.tt-head.today { color: var(--primary); }
.tt-head small { display: block; color: var(--muted); font-weight: 500; }
.tt-hours { position: relative; border-right: 1px solid var(--line); }
.tt-hour { position: absolute; right: 6px; font-size: 12px; color: var(--muted); transform: translateY(-50%); }
.tt-hour.first { transform: translateY(2px); }
.tt-day { position: relative; border-right: 1px solid var(--line); }
.tt-day:last-child { border-right: 0; }
.tt-line { position: absolute; left: 0; right: 0; border-top: 1px solid #f0f2f5; }
.tt-block {
  position: absolute; left: 3px; right: 3px; overflow: hidden; text-align: left;
  border-radius: 8px; padding: 4px 6px; font: inherit; font-size: 12px; line-height: 1.35; cursor: pointer;
  border: 1px solid var(--line); border-left-width: 4px; background: #fff; color: var(--text);
}
.tt-block:hover { box-shadow: 0 2px 8px rgba(16, 24, 40, .15); z-index: 2; }
.tt-block b, .tt-block span { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tt-block b { font-size: 12px; }
.tt-block.narrow b {
  white-space: normal; word-break: keep-all; line-height: 1.3;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.tt-block.s-OPEN { border-left-color: var(--ok); background: #f5fbf7; }
.tt-block.s-DRAFT { border-left-color: var(--off); background: #fafbfc; border-style: dashed; border-left-style: solid; }
.tt-block.s-CLOSED { border-left-color: var(--wait); background: #fffaf3; }
.tt-block.s-CANCELLED { border-left-color: var(--stop); background: #fff7f6; color: var(--muted); text-decoration: line-through; }
.tt-block.s-COMPLETED { border-left-color: var(--off); background: var(--off-bg); color: var(--muted); }

.day-list { display: none; }
.day-group { margin-bottom: 16px; }
.day-group h3 { font-size: 15px; margin: 0 0 8px; }
.day-item {
  display: flex; gap: 12px; align-items: center; width: 100%; text-align: left; font: inherit; color: var(--text);
  background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
  margin-bottom: 6px; cursor: pointer;
}
.day-item .t { font-weight: 800; min-width: 48px; }
.day-item .n { flex: 1; }

.table { width: 100%; border-collapse: collapse; background: var(--surface); }
.table th, .table td { padding: 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
.table th { font-size: 13px; color: var(--muted); font-weight: 700; background: #fafbfc; }
.table-wrap { border: 1px solid var(--line); border-radius: var(--radius); overflow: auto; }

.legend { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

@media (max-width: 760px) {
  .header-inner { flex-wrap: wrap; row-gap: 6px; }
  .account { margin-left: auto; }
  .nav { order: 3; flex-basis: 100%; overflow-x: auto; }
  .toolbar { top: 89px; }
  .session-card { grid-template-columns: 64px 1fr; }
  .session-card .action { grid-column: 1 / -1; align-items: stretch; min-width: 0; }
  .session-card .action .badge { align-self: flex-start; }
  .search { max-width: none; margin-left: 0; }
  .timetable { display: none; }
  .day-list { display: block; }
  .detail-grid { grid-template-columns: 96px 1fr; }
  .row { flex-direction: column; gap: 0; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .table th, .table td { white-space: nowrap; }
  .meter { min-width: 0; }
  .meter .bar { display: none; }
}