:root {
  --forest-950: #13271f;
  --forest-900: #1c352a;
  --forest-800: #28483a;
  --forest-700: #37604e;
  --forest-100: #eaf0ec;
  --wood-600: #a76e2b;
  --wood-500: #c68a3a;
  --wood-100: #f8ecda;
  --cream: #f7f5ef;
  --surface: #ffffff;
  --text: #17211c;
  --muted: #6d766f;
  --line: #dce2dd;
  --danger: #a7463d;
  --warning: #9a651f;
  --shadow: 0 18px 55px rgba(19, 39, 31, 0.08);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(198, 138, 58, 0.11), transparent 28rem),
    var(--cream);
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button, select { cursor: pointer; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(220, 226, 221, 0.88);
  background: rgba(247, 245, 239, 0.9);
  backdrop-filter: blur(16px);
}

.header-inner {
  width: min(1180px, calc(100% - 32px));
  min-height: 74px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50% 50% 44% 56%;
  color: white;
  background: linear-gradient(145deg, var(--forest-700), var(--forest-950));
  font-weight: 900;
  letter-spacing: -0.04em;
  box-shadow: inset -6px -8px 14px rgba(0,0,0,.18);
}
.brand-copy { display: grid; line-height: 1.1; }
.brand-copy strong { font-size: 1.05rem; }
.brand-copy small { margin-top: 4px; color: var(--muted); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; }

.top-nav { display: flex; align-items: center; gap: 6px; }
.top-nav a, .link-button {
  border: 0;
  border-radius: 999px;
  padding: 9px 13px;
  color: var(--muted);
  background: transparent;
}
.top-nav a:hover, .top-nav a.is-active, .link-button:hover { color: var(--forest-900); background: var(--forest-100); }
.admin-name { color: var(--muted); font-size: .9rem; }

.site-main { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 52px 0 84px; }
.site-footer { padding: 28px 16px; color: var(--muted); text-align: center; font-size: .78rem; }

.hero { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 36px; margin-bottom: 28px; }
.hero h1, .page-heading h1, .admin-heading h1 { margin: 4px 0 10px; font-size: clamp(2rem, 5vw, 4.2rem); line-height: 1.05; letter-spacing: -.055em; }
.hero p, .page-heading p, .admin-heading p { max-width: 690px; margin: 0; color: var(--muted); }
.hero-badge { min-width: 160px; padding: 20px; border-radius: var(--radius-md); color: white; background: var(--forest-900); box-shadow: var(--shadow); }
.hero-badge span, .hero-badge strong { display: block; }
.hero-badge span { color: #c7d8cf; font-size: .82rem; }
.hero-badge strong { margin-top: 5px; font-size: 1.25rem; }
.eyebrow { margin: 0; color: var(--wood-600) !important; font-size: .74rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }

.notice-banner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  padding: 15px 18px;
  border: 1px solid #ead3b0;
  border-radius: var(--radius-md);
  background: var(--wood-100);
}
.notice-label { border-radius: 999px; padding: 5px 9px; color: white; background: var(--wood-600); font-size: .72rem; font-weight: 800; }
.notice-arrow { color: var(--wood-600); font-size: 1.2rem; }

.panel { border: 1px solid rgba(220, 226, 221, .9); border-radius: var(--radius-lg); padding: 24px; background: var(--surface); box-shadow: var(--shadow); }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 22px; }
.panel-heading h2 { margin: 2px 0 0; font-size: 1.35rem; letter-spacing: -.035em; }
.booking-panel { margin-bottom: 20px; }

.room-tabs { display: inline-flex; gap: 5px; padding: 5px; border-radius: 999px; background: var(--forest-100); }
.room-tabs a { border-radius: 999px; padding: 9px 14px; color: var(--muted); font-size: .9rem; font-weight: 700; }
.room-tabs a.is-active { color: white; background: var(--forest-800); }
.week-toolbar { display: flex; align-items: center; justify-content: center; gap: 8px; margin-bottom: 16px; }
.icon-button { display: inline-grid; place-items: center; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 50%; color: var(--forest-900); background: white; }
.icon-button:hover { border-color: var(--forest-700); background: var(--forest-100); }

.date-strip { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; }
.date-card { min-width: 0; border: 1px solid var(--line); border-radius: 15px; padding: 14px 8px; text-align: center; background: white; transition: .18s ease; }
.date-card:hover { transform: translateY(-2px); border-color: var(--forest-700); }
.date-card span, .date-card strong, .date-card small { display: block; }
.date-card .day-name { color: var(--muted); font-size: .78rem; }
.date-card strong { margin: 3px 0; }
.date-card small { color: var(--muted); font-size: .75rem; }
.date-card.is-today { box-shadow: inset 0 0 0 2px var(--wood-500); }
.date-card.is-selected { color: white; border-color: var(--forest-900); background: var(--forest-900); }
.date-card.is-selected .day-name, .date-card.is-selected small { color: #c8d8d0; }

.reservation-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(320px, .65fr); gap: 20px; }
.room-pill { border-radius: 999px; padding: 7px 11px; color: var(--forest-800); background: var(--forest-100); font-size: .8rem; font-weight: 800; }
.schedule-list { display: grid; gap: 10px; }
.schedule-item { display: grid; grid-template-columns: 130px 1fr auto; align-items: center; gap: 18px; border: 1px solid var(--line); border-radius: var(--radius-md); padding: 16px; }
.time-block { display: flex; align-items: baseline; gap: 5px; }
.time-block strong { font-size: 1.2rem; }
.time-block span { color: var(--muted); }
.schedule-info { display: flex; align-items: center; gap: 11px; }
.schedule-info p { margin: 4px 0 0; color: var(--muted); font-size: .82rem; }
.member-dot { width: 12px; height: 12px; flex: 0 0 12px; border: 2px solid white; border-radius: 50%; background: var(--member-color, var(--forest-700)); box-shadow: 0 0 0 1px rgba(0,0,0,.16); }

.badge { display: inline-flex; align-items: center; border-radius: 999px; padding: 4px 8px; color: var(--forest-800); background: var(--forest-100); font-size: .72rem; font-weight: 800; }
.badge-lesson { color: #6e4b17; background: var(--wood-100); }
.badge-important { color: white; background: var(--wood-600); }

.form-stack { display: grid; gap: 15px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-field { display: grid; gap: 7px; }
.form-field > span { color: var(--forest-900); font-size: .82rem; font-weight: 800; }
input, select, textarea { width: 100%; min-height: 45px; border: 1px solid var(--line); border-radius: 11px; padding: 10px 12px; color: var(--text); background: white; outline: none; }
input:focus, select:focus, textarea:focus { border-color: var(--forest-700); box-shadow: 0 0 0 3px rgba(55, 96, 78, .12); }
.form-help { margin: 0; color: var(--muted); font-size: .77rem; }
.form-error { margin: 12px 0; border-radius: 10px; padding: 10px 12px; color: var(--danger); background: #f9e6e3; }

.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; border: 0; border-radius: 12px; padding: 10px 16px; font-weight: 800; }
.button-primary { color: white; background: var(--forest-800); }
.button-primary:hover { background: var(--forest-950); }
.button-muted { border: 1px solid var(--line); color: var(--forest-900); background: white; }
.button-full { width: 100%; }
.text-button { border: 0; padding: 6px 0; color: var(--forest-700); background: none; font-size: .82rem; font-weight: 800; }
.text-button:hover { color: var(--forest-950); text-decoration: underline; }

.empty-inline, .empty-state { padding: 42px 20px; color: var(--muted); text-align: center; }
.empty-inline strong { color: var(--text); }
.empty-inline p { margin: 5px 0 0; }
.empty-state { min-height: 55vh; display: grid; place-content: center; justify-items: center; }
.empty-state h1 { margin: 4px 0; }
.page-heading { margin-bottom: 28px; }
.page-heading h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
.notice-list { display: grid; }
.notice-row { display: flex; justify-content: space-between; gap: 24px; padding: 18px 4px; border-bottom: 1px solid var(--line); }
.notice-row:last-child { border-bottom: 0; }
.notice-title { display: flex; align-items: center; gap: 9px; }
.notice-row time { color: var(--muted); white-space: nowrap; }
.article-panel { max-width: 820px; margin: 0 auto; padding: 36px; }
.article-panel h1 { margin-bottom: 8px; font-size: clamp(1.8rem, 4vw, 2.8rem); letter-spacing: -.04em; }
.article-panel time { color: var(--muted); }
.article-body { margin-top: 32px; padding-top: 28px; border-top: 1px solid var(--line); }
.back-link { display: inline-block; margin-bottom: 24px; color: var(--forest-700); font-weight: 700; }

.login-shell { min-height: calc(100vh - 180px); display: grid; place-items: center; }
.login-card { width: min(440px, 100%); border: 1px solid var(--line); border-radius: 28px; padding: 36px; background: white; box-shadow: var(--shadow); }
.login-card h1 { margin: 4px 0 8px; font-size: 2rem; }
.login-card > p:not(.eyebrow) { margin: 0 0 24px; color: var(--muted); }

.admin-layout { width: min(1440px, 100%); min-height: calc(100vh - 75px); margin: 0 auto; display: grid; grid-template-columns: 230px minmax(0, 1fr); }
.admin-sidebar { border-right: 1px solid var(--line); padding: 26px 16px; background: rgba(255,255,255,.58); }
.admin-nav { position: sticky; top: 100px; display: grid; gap: 5px; }
.admin-nav a { display: flex; align-items: center; gap: 11px; border-radius: 12px; padding: 11px 12px; color: var(--muted); font-size: .9rem; }
.admin-nav a:hover, .admin-nav a.is-active { color: white; background: var(--forest-800); }
.nav-icon { display: inline-grid; place-items: center; width: 25px; height: 25px; border-radius: 7px; background: rgba(255,255,255,.14); font-size: .65rem; font-weight: 900; }
.admin-main { min-width: 0; padding: 38px clamp(20px, 4vw, 54px) 80px; }
.admin-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.admin-heading h1 { font-size: clamp(2rem, 4vw, 3.2rem); }

.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 20px; }
.metric-card { display: grid; gap: 4px; min-height: 150px; align-content: end; border: 1px solid var(--line); border-radius: var(--radius-md); padding: 20px; background: white; box-shadow: var(--shadow); }
.metric-card span, .metric-card small { color: var(--muted); }
.metric-card strong { font-size: 1.75rem; letter-spacing: -.04em; }
.admin-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 20px; }
.task-list { display: grid; }
.task-item { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.task-item:last-child { border-bottom: 0; }
.task-item p { margin: 2px 0 0; color: var(--muted); font-size: .82rem; }
.task-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--wood-500); }
.quick-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.quick-card { display: grid; place-items: center; min-height: 86px; border: 1px solid var(--line); border-radius: 13px; color: var(--forest-800); background: var(--forest-100); font-weight: 800; }

.filter-bar { display: flex; gap: 10px; margin-bottom: 18px; }
.filter-bar input { flex: 1; }
.filter-bar select { width: auto; min-width: 140px; }
.responsive-table { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { padding: 11px 12px; color: var(--muted); font-size: .76rem; text-align: left; white-space: nowrap; }
td { padding: 15px 12px; border-top: 1px solid var(--line); vertical-align: middle; }
.person-cell { display: flex; align-items: center; gap: 10px; }
.muted { color: var(--muted); }
.status-warning { color: var(--warning); font-weight: 800; }
.status-pill { display: inline-flex; border-radius: 999px; padding: 5px 9px; font-size: .72rem; font-weight: 800; }
.status-pill.is-active { color: #285740; background: #e3f1e8; }
.status-pill.is-inactive { color: #757575; background: #eceeed; }
.status-pill.is-pending { color: #835b1f; background: var(--wood-100); }

.card-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.entity-card { display: grid; gap: 20px; border: 1px solid var(--line); border-radius: var(--radius-md); padding: 20px; background: white; box-shadow: var(--shadow); }
.entity-main { display: flex; align-items: center; gap: 13px; }
.entity-main h2 { margin: 0; font-size: 1.15rem; }
.entity-main p { margin: 3px 0 0; color: var(--muted); font-size: .82rem; }
.avatar, .room-number { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; color: white; background: var(--forest-800); font-size: 1.2rem; font-weight: 900; }
.entity-details { display: grid; gap: 9px; margin: 0; }
.entity-details div { display: flex; justify-content: space-between; gap: 20px; }
.entity-details dt { color: var(--muted); }
.entity-details dd { margin: 0; text-align: right; }
.entity-actions { display: flex; gap: 14px; border-top: 1px solid var(--line); padding-top: 13px; }
.entity-card-horizontal { grid-template-columns: 1fr auto; align-items: center; }
.entity-card-horizontal .entity-actions { grid-column: 1 / -1; }

.grade-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grade-card { border: 1px solid var(--line); border-radius: var(--radius-md); padding: 22px; background: white; box-shadow: var(--shadow); }
.grade-top { display: flex; align-items: center; justify-content: space-between; gap: 15px; }
.grade-top h2 { margin: 0; }
.settlement-basis { margin: 26px 0 3px; color: var(--muted); }
.amount { display: block; font-size: 2rem; letter-spacing: -.045em; }
.grade-card > p:last-of-type { color: var(--muted); font-size: .8rem; }

.calendar-toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.calendar-toolbar h2 { margin: 0; }
.calendar-toolbar select { width: auto; }
.toolbar-spacer { flex: 1; }
.month-calendar { display: grid; grid-template-columns: repeat(7, minmax(86px, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); overflow-x: auto; }
.calendar-day-name, .calendar-cell { min-width: 86px; border: 0; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 10px; background: white; text-align: left; }
.calendar-day-name { color: var(--muted); text-align: center; font-size: .78rem; }
.calendar-cell { min-height: 105px; display: flex; flex-direction: column; gap: 5px; }
.calendar-cell:hover { background: var(--forest-100); }
.calendar-cell.is-other { background: #f7f8f7; }
.calendar-count { margin-top: auto; color: var(--forest-700); font-size: .76rem; font-weight: 800; }
.calendar-dot { color: var(--wood-600); font-size: .7rem; }

.app-dialog { width: min(520px, calc(100% - 28px)); border: 0; border-radius: 24px; padding: 0; box-shadow: 0 30px 100px rgba(19,39,31,.3); }
.app-dialog::backdrop { background: rgba(19,39,31,.55); backdrop-filter: blur(4px); }
.dialog-card { padding: 26px; }
.dialog-heading { display: flex; align-items: start; justify-content: space-between; gap: 20px; margin-bottom: 20px; }
.dialog-heading h2 { margin: 2px 0 0; }
.dialog-close { border: 0; background: none; font-size: 1.8rem; line-height: 1; }
.toast { position: fixed; left: 50%; bottom: 24px; z-index: 200; max-width: calc(100% - 32px); transform: translate(-50%, 30px); border-radius: 999px; padding: 12px 18px; color: white; background: var(--forest-950); opacity: 0; pointer-events: none; transition: .2s ease; box-shadow: var(--shadow); }
.toast.is-visible { transform: translate(-50%, 0); opacity: 1; }

@media (max-width: 1000px) {
  .reservation-grid, .admin-grid { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .card-list, .grade-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .header-inner { width: min(100% - 22px, 1180px); min-height: 66px; }
  .brand-copy small { display: none; }
  .top-nav { gap: 0; }
  .top-nav a { padding: 8px 9px; font-size: .82rem; }
  .admin-name { display: none; }
  .site-main { width: min(100% - 22px, 1180px); padding-top: 30px; }
  .hero { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2.6rem; }
  .hero-badge { min-width: 0; }
  .panel { padding: 18px; border-radius: 19px; }
  .panel-heading { align-items: flex-start; }
  .room-tabs { width: 100%; }
  .room-tabs a { flex: 1; text-align: center; }
  .booking-panel .panel-heading { display: grid; }
  .date-strip { display: flex; margin: 0 -18px; padding: 2px 18px 8px; overflow-x: auto; scroll-snap-type: x mandatory; }
  .date-card { flex: 0 0 80px; scroll-snap-align: start; }
  .schedule-item { grid-template-columns: 1fr auto; gap: 10px; }
  .time-block { grid-column: 1 / -1; }
  .form-row { grid-template-columns: 1fr 1fr; }
  .notice-banner { grid-template-columns: auto 1fr; }
  .notice-arrow { display: none; }
  .notice-row { align-items: flex-start; }
  .notice-title { align-items: flex-start; }
  .article-panel { padding: 24px 20px; }

  .admin-layout { display: block; }
  .admin-sidebar { position: sticky; top: 66px; z-index: 40; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); padding: 8px 11px; background: rgba(247,245,239,.94); backdrop-filter: blur(14px); }
  .admin-nav { position: static; display: flex; width: max-content; gap: 4px; }
  .admin-nav a { padding: 8px 11px; white-space: nowrap; }
  .nav-icon { display: none; }
  .admin-main { padding: 28px 11px 72px; }
  .admin-heading { display: grid; align-items: start; }
  .admin-heading .button { width: 100%; }
  .metric-grid { grid-template-columns: 1fr 1fr; gap: 9px; }
  .metric-card { min-height: 125px; padding: 15px; }
  .metric-card strong { font-size: 1.35rem; }
  .filter-bar { display: grid; grid-template-columns: 1fr 1fr; }
  .filter-bar input { grid-column: 1 / -1; }
  .filter-bar select { width: 100%; min-width: 0; }
  .card-list, .grade-grid { grid-template-columns: 1fr; }
  .calendar-toolbar { flex-wrap: wrap; }
  .toolbar-spacer { display: none; }
  .calendar-toolbar select { flex: 1; }
}

@media (max-width: 480px) {
  .brand-mark { width: 37px; height: 37px; }
  .brand-copy strong { font-size: .94rem; }
  .hero h1 { font-size: 2.15rem; }
  .form-row { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: 1fr; }
  .quick-grid { grid-template-columns: 1fr; }
  .schedule-item { grid-template-columns: 1fr; }
  .schedule-item .text-button { justify-self: start; }
  .notice-row { display: grid; gap: 8px; }
}

/* === v0.1.1 logo & drum icon enhancements === */
.brand-mark {
  overflow: hidden;
  padding: 0;
  background: #f6f1e8;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero {
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 360px);
  align-items: center;
}

.hero-side {
  display: grid;
  gap: 16px;
}

.hero-image-card {
  display: grid;
  place-items: center;
  padding: 18px;
  border: 1px solid rgba(220, 226, 221, .9);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,.82);
  box-shadow: var(--shadow);
}

.hero-image {
  width: 100%;
  max-width: 280px;
  height: auto;
  display: block;
  border-radius: 20px;
}

.hero-features {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.hero-feature {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 12px;
  align-items: center;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.75);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: block;
}

.hero-feature strong {
  display: block;
  margin-bottom: 2px;
}

.hero-feature p {
  margin: 0;
  color: var(--muted);
  font-size: .82rem;
}

@media (max-width: 760px) {
  .hero-features {
    grid-template-columns: 1fr;
  }

  .hero-side {
    order: -1;
  }

  .hero-image {
    max-width: 220px;
  }
}

/* === v0.2 database login & CRUD === */
.flash-message {
  position: fixed;
  top: 86px;
  left: 50%;
  z-index: 190;
  width: min(620px, calc(100% - 28px));
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 13px 16px;
  color: var(--forest-950);
  background: white;
  box-shadow: var(--shadow);
  transition: opacity .4s ease, transform .4s ease;
}
.flash-message.is-success { border-color: #bad8c5; background: #eef8f1; }
.flash-message.is-error { border-color: #e4b9b3; color: var(--danger); background: #fff2f0; }
.flash-message.is-fading { opacity: 0; transform: translate(-50%, -10px); }
.flash-close { border: 0; color: inherit; background: transparent; font-size: 1.25rem; }

.login-logo { display: grid; place-items: center; margin-bottom: 16px; }
.login-logo img { width: 120px; height: auto; border-radius: 18px; }

.table-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.inline-form { display: inline; margin: 0; }
.text-danger { color: var(--danger); }
.text-danger:hover { color: #7e3029; }
.button[disabled], button[disabled] { opacity: .48; cursor: not-allowed; }
.lesson-only-field { display: grid; gap: 15px; }
.lesson-only-field[hidden] { display: none !important; }
textarea { resize: vertical; }

.task-dot.is-warning { background: var(--wood-500); }
.task-dot.is-danger { background: var(--danger); }

.filter-bar { flex-wrap: wrap; }
.filter-bar .button { flex: 0 0 auto; }

.grade-card .entity-actions { margin-top: 18px; }

@media (max-width: 760px) {
  .flash-message { top: 74px; }
  .table-actions { min-width: 210px; }
  .filter-bar .button { width: 100%; }
}

/* v0.3 CRUD screens */
.checkbox-fieldset {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
}

.checkbox-fieldset legend {
  padding: 0 6px;
  color: var(--forest-900);
  font-size: .82rem;
  font-weight: 800;
}

.checkbox-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
}

.form-check {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text);
  font-size: .9rem;
}

.form-check input {
  width: 18px;
  min-height: 18px;
  margin: 0;
  padding: 0;
}

.form-check-inline {
  padding: 10px 0;
}

.settlement-section + .settlement-section {
  margin-top: 20px;
}

.table-actions {
  min-width: 180px;
}

@media (max-width: 760px) {
  .checkbox-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
  }
}

/* v0.3.1 public reservation validation and blocked-time options */
.blocked-time-guide {
  display: grid;
  gap: 5px;
  border: 1px solid #e5c99f;
  border-radius: 11px;
  padding: 11px 12px;
  color: #76501a;
  background: #fff7e9;
  font-size: .8rem;
}

.blocked-time-guide strong {
  color: #69450f;
}

.blocked-time-guide span {
  display: block;
}

select option.is-blocked-time,
select option:disabled {
  color: #a7463d;
  background: #f8e8e5;
}

/* v0.4.0 관리자 메뉴 상태 구분 */
.admin-nav a.is-active {
  color: #fff;
  background: var(--forest-800);
  box-shadow: inset 4px 0 0 var(--wood-500);
}
.admin-nav a:focus-visible {
  color: var(--forest-950);
  background: var(--wood-100);
  outline: 3px solid var(--wood-500);
  outline-offset: 2px;
}
.admin-nav a.is-active:focus-visible {
  color: #fff;
  background: var(--forest-700);
  outline-color: #f1c978;
}
.teacher-schedule-item { grid-template-columns: 170px 1fr auto; }
.is-blocked-time { color: #9d3f36 !important; background: #f9e6e3 !important; }

/* v0.4.0 관리자 좌측 메뉴 상태 구분
   - Selected: 현재 페이지
   - Focused: 키보드 탐색으로 포커스된 항목 */
.admin-nav a.is-active {
  color: #ffffff;
  background: var(--forest-800);
  box-shadow: inset 4px 0 0 var(--wood-500);
}

.admin-nav a:hover:not(.is-active) {
  color: var(--forest-950);
  background: var(--forest-100);
}

.admin-nav a:focus {
  outline: none;
}

.admin-nav a:focus-visible {
  color: #5f3b08;
  background: #f8e5bd;
  box-shadow: 0 0 0 3px rgba(198, 138, 58, .32);
}

.admin-nav a.is-active:focus-visible {
  color: #ffffff;
  background: var(--forest-700);
  box-shadow:
    inset 4px 0 0 var(--wood-500),
    0 0 0 3px rgba(198, 138, 58, .38);
}

.teacher-month-calendar { margin: 18px 0 28px; }
.teacher-month-calendar .calendar-cell.is-today { box-shadow: inset 0 0 0 2px var(--wood-500); }
.calendar-lesson { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .72rem; color: var(--forest-800); }
.calendar-lesson.status-postponed { color: var(--warning); font-weight: 800; }
.calendar-lesson.status-completed { color: #285740; }
.schedule-section-title { margin: 26px 0 14px; }
.entitlement-history-panel { margin-top: 20px; }

/* v1.2.0 recurring reservation states */
.badge-recurring { color:#4f3f72; background:#eee8f5; }
.recurring-label { color:var(--muted); font-size:.76rem; font-weight:800; }
.weekday-checks { display:flex; flex-wrap:wrap; gap:8px; }
.form-check { display:inline-flex; align-items:center; gap:6px; padding:7px 10px; border:1px solid var(--line); border-radius:10px; }
.form-check input { width:auto; min-height:auto; }
.admin-nav a.is-active { position:relative; background:var(--forest-800); color:#fff; }
.admin-nav a.is-active::before { content:""; position:absolute; left:0; top:8px; bottom:8px; width:4px; border-radius:0 4px 4px 0; background:var(--wood-500); }
.admin-nav a:focus-visible { color:var(--forest-950); background:var(--wood-100); outline:3px solid var(--wood-500); outline-offset:2px; }
.admin-nav a.is-active:focus-visible { color:#fff; background:var(--forest-800); outline:3px solid var(--wood-500); }

/* v1.2.1: 예약 관리 내부 탭 */
.admin-section-tabs {
  display: inline-flex;
  gap: 6px;
  margin: 0 0 20px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, .72);
  box-shadow: 0 8px 28px rgba(19, 39, 31, .05);
}

.admin-section-tabs a {
  min-width: 132px;
  border-radius: 10px;
  padding: 10px 16px;
  color: var(--muted);
  text-align: center;
  font-weight: 800;
}

.admin-section-tabs a:hover:not(.is-active) {
  color: var(--forest-900);
  background: var(--forest-100);
}

.admin-section-tabs a.is-active {
  color: #fff;
  background: var(--forest-800);
}

.admin-section-tabs a:focus-visible {
  outline: 3px solid var(--wood-500);
  outline-offset: 2px;
}

@media (max-width: 560px) {
  .admin-section-tabs {
    display: flex;
    width: 100%;
  }
  .admin-section-tabs a {
    flex: 1;
    min-width: 0;
    padding-inline: 10px;
  }
}
/* ==========================================================================
   교사 월별 일정 — 회원별 레슨 캐비닛
   app.css 마지막에 추가
   ========================================================================== */

.cabinet-section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin: 38px 0 18px;
}

.cabinet-section-heading h2 {
  margin: 3px 0 2px;
  font-size: 1.55rem;
  letter-spacing: -.035em;
}

.cabinet-section-heading p {
  margin: 0;
}

.cabinet-total {
  flex: 0 0 auto;
  border-radius: 999px;
  padding: 7px 12px;
  color: var(--forest-800);
  background: var(--forest-100);
  font-size: .8rem;
  font-weight: 800;
}

.lesson-cabinet-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.lesson-cabinet {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: 0 12px 34px rgba(19, 39, 31, .06);
}

.lesson-cabinet[open] {
  border-color: rgba(55, 96, 78, .44);
}

.lesson-cabinet-summary {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 13px;
  padding: 18px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.lesson-cabinet-summary::-webkit-details-marker {
  display: none;
}

.lesson-cabinet-summary:hover {
  background: var(--forest-100);
}

.lesson-cabinet-summary:focus-visible {
  outline: 3px solid rgba(198, 138, 58, .5);
  outline-offset: -3px;
}

.cabinet-avatar {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 15px;
  color: white;
  background: linear-gradient(145deg, var(--wood-500), var(--wood-600));
  font-size: 1.1rem;
  font-weight: 900;
}

.cabinet-member {
  min-width: 0;
  display: grid;
  gap: 3px;
}

.cabinet-member strong {
  overflow: hidden;
  font-size: 1.05rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cabinet-member span,
.cabinet-count span {
  color: var(--muted);
  font-size: .76rem;
}

.cabinet-count {
  display: grid;
  justify-items: end;
  line-height: 1.2;
}

.cabinet-count strong {
  font-size: 1.25rem;
}

.cabinet-toggle {
  color: var(--forest-700);
  font-size: .75rem;
  font-weight: 800;
}

.lesson-cabinet[open] .cabinet-toggle {
  font-size: 0;
}

.lesson-cabinet[open] .cabinet-toggle::after {
  content: '접기';
  font-size: .75rem;
}

.cabinet-status-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 0 18px 16px;
}

.cabinet-status {
  display: grid;
  gap: 2px;
  border-radius: 12px;
  padding: 10px;
  background: var(--cream);
  text-align: center;
}

.cabinet-status span {
  color: var(--muted);
  font-size: .72rem;
}

.cabinet-status strong {
  font-size: 1.05rem;
}

.cabinet-schedule-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.cabinet-schedule-item {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--line);
}

.cabinet-schedule-item:last-child {
  border-bottom: 0;
}

.cabinet-date {
  display: grid;
  gap: 3px;
}

.cabinet-date strong {
  font-size: 1rem;
}

.cabinet-date span {
  color: var(--muted);
  font-size: .76rem;
  white-space: nowrap;
}

.cabinet-lesson-info {
  min-width: 0;
}

.cabinet-lesson-info strong {
  display: block;
}

.cabinet-lesson-info p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: .78rem;
}

.cabinet-lesson-state {
  justify-self: end;
}

.cabinet-lesson-state .status-pill {
  text-transform: uppercase;
}

.cabinet-actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.cabinet-actions .button {
  min-height: 38px;
  padding: 7px 12px;
  font-size: .78rem;
}

.status-pill.status-scheduled {
  color: #285740;
  background: #e3f1e8;
}

.status-pill.status-completed {
  color: #285740;
  background: #dcecdf;
}

.status-pill.status-postponed {
  color: #835b1f;
  background: var(--wood-100);
}

.status-pill.status-no_show,
.status-pill.status-cancelled {
  color: var(--danger);
  background: #f9e6e3;
}

@media (max-width: 1000px) {
  .lesson-cabinet-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .cabinet-section-heading {
    align-items: start;
  }

  .lesson-cabinet-summary {
    grid-template-columns: 42px minmax(0, 1fr) auto;
    padding: 15px;
  }

  .cabinet-avatar {
    width: 42px;
    height: 42px;
  }

  .cabinet-count {
    grid-column: 2;
    justify-items: start;
  }

  .cabinet-toggle {
    grid-column: 3;
    grid-row: 1 / span 2;
  }

  .cabinet-status-grid {
    grid-template-columns: repeat(2, 1fr);
    padding: 0 15px 15px;
  }

  .cabinet-schedule-item {
    grid-template-columns: 1fr auto;
    padding: 14px 15px;
  }

  .cabinet-date {
    grid-column: 1 / -1;
    display: flex;
    align-items: baseline;
    gap: 8px;
  }

  .cabinet-lesson-state {
    align-self: start;
  }

  .cabinet-actions {
    justify-content: stretch;
  }

  .cabinet-actions .button,
  .cabinet-actions .inline-form {
    flex: 1;
  }

  .cabinet-actions .inline-form .button {
    width: 100%;
  }
}
/* ==========================================================================
   관리자 레슨 일정 — 회원별 캐비닛 보완 스타일
   teacher-cabinet.css를 이미 적용했다면 아래 내용만 app.css 마지막에 추가
   ========================================================================== */

.admin-cabinet-heading {
  margin-top: 28px;
}

.admin-lesson-cabinet-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.admin-cabinet-status-grid {
  grid-template-columns: repeat(5, 1fr);
}

.admin-cabinet-schedule-item {
  grid-template-columns: 105px minmax(0, 1fr) auto;
}

.schedule-reason-box {
  margin-bottom: 16px;
  border-radius: 12px;
  padding: 12px 14px;
  color: #835b1f;
  background: var(--wood-100);
}

.schedule-reason-box p {
  margin: 4px 0 0;
}

@media (max-width: 1100px) {
  .admin-lesson-cabinet-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .admin-cabinet-status-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .admin-cabinet-status-grid .cabinet-status:last-child {
    grid-column: 1 / -1;
  }

  .admin-cabinet-schedule-item {
    grid-template-columns: 1fr auto;
  }
}