.app-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-main {
  flex: 1;
  width: min(1100px, calc(100% - 2.5rem));
  margin: 2.5rem auto 3rem;
}

.app-panel {
  border: 1px solid var(--line);
  background: rgba(16, 16, 16, 0.92);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

.app-panel h1 {
  margin: 0.35rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.app-panel .lede {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
}

.user-chip {
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
  margin: 1.25rem 0 1.75rem;
}

.stat {
  border: 1px solid var(--line);
  background: #0d0d0d;
  padding: 1rem;
}

.stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--gold);
  line-height: 1;
}

.stat span {
  display: block;
  margin-top: 0.45rem;
  color: var(--text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.data-table th,
.data-table td {
  padding: 0.75rem 0.6rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  color: var(--gold);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
}

.data-table th .sort-link {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.data-table th .sort-link:hover,
.data-table th .sort-link.is-active {
  color: var(--text);
  border-bottom-color: rgba(196, 164, 106, 0.55);
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.45rem;
  border: 1px solid rgba(196, 164, 106, 0.35);
  color: var(--gold);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.badge.pending { color: #e0c37a; }
.badge.cancelled,
.badge.rejected { color: #c97a7a; border-color: rgba(201, 122, 122, 0.35); }

.login-shell {
  flex: 1;
  display: grid;
  place-items: center;
  padding: 3rem 1.25rem;
}

.login-card {
  width: min(420px, 100%);
  padding: 2rem 1.5rem;
  border: 1px solid var(--line);
  background: rgba(16, 16, 16, 0.92);
  box-shadow: var(--shadow);
}

.login-card h1 {
  margin: 0.75rem 0 0.35rem;
  font-family: var(--font-display);
  font-size: 2.2rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.login-card p {
  margin: 0 0 1.2rem;
  color: var(--text-muted);
}

.login-card label {
  display: block;
  margin: 0 0 0.4rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
}

.login-card input {
  width: 100%;
  min-height: 46px;
  margin-bottom: 1rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--line);
  background: #0d0d0d;
  color: var(--text);
}

.login-card .btn { width: 100%; }

.form-error {
  margin: 0 0 1rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid rgba(201, 122, 122, 0.45);
  background: rgba(201, 122, 122, 0.08);
  color: #efb0b0;
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .data-table { display: block; overflow-x: auto; }
}

@media (max-width: 640px) {
  .app-main { width: min(1100px, calc(100% - 1.5rem)); }
  .header-actions .user-chip { display: none; }
}

.catalog-page {
  flex: 1;
}

.catalog-hero {
  position: relative;
  min-height: 360px;
  display: grid;
  align-items: end;
  isolation: isolate;
  overflow: hidden;
}

.catalog-hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.catalog-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.15) contrast(1.05);
}

.catalog-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0,0,0,.82) 0%, rgba(0,0,0,.5) 55%, rgba(0,0,0,.35) 100%),
    linear-gradient(180deg, rgba(0,0,0,.2) 0%, rgba(0,0,0,.75) 100%);
}

.catalog-hero-inner {
  padding: 3.5rem 0 2.5rem;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
  margin-bottom: 1rem;
  color: var(--text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.breadcrumbs a:hover { color: var(--gold); }
.breadcrumbs [aria-current="page"] { color: var(--gold); }

.catalog-hero h1 {
  margin: 0;
  max-width: 16ch;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 0.95;
  text-transform: uppercase;
  color: var(--gold);
}

.catalog-lead {
  margin: 1rem 0 0;
  max-width: 42rem;
  color: #ebe4d8;
  font-size: 1.02rem;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.15rem;
}

.catalog-grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.catalog-card {
  display: grid;
  grid-template-rows: 180px auto;
  border: 1px solid var(--line);
  background: var(--bg-panel);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.catalog-card:hover {
  border-color: rgba(196, 164, 106, 0.45);
  transform: translateY(-3px);
}

.catalog-card-media {
  overflow: hidden;
}

.catalog-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.25) contrast(1.05);
  transition: transform 0.45s ease, filter 0.45s ease;
}

.catalog-card:hover .catalog-card-media img {
  transform: scale(1.05);
  filter: grayscale(0.05) contrast(1.08);
}

.catalog-card-body {
  display: grid;
  gap: 0.7rem;
  padding: 1.15rem 1.1rem 1.25rem;
}

.catalog-card-body h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.1;
}

.catalog-card-body p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.94rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.catalog-card-body .more {
  color: var(--gold);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

a.course-card {
  color: inherit;
}

.course-meta,
.card-meta,
.register-price {
  margin: 0.65rem 0 0;
  color: var(--gold);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card-meta {
  margin: 0;
  font-size: 0.72rem;
}

.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.8fr);
  gap: 1.15rem;
  align-items: start;
}

.detail-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.detail-list li {
  position: relative;
  padding-left: 1.1rem;
  color: #ebe4d8;
}

.detail-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.45rem;
  height: 0.45rem;
  border: 1px solid var(--gold);
  background: rgba(196, 164, 106, 0.2);
}

.related-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.related-list a {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  color: #efe8db;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.related-list a:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.upcoming-note {
  margin: 1rem 0 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.detail-side .app-panel h2,
.detail-main .app-panel h2 {
  margin: 0.35rem 0 0;
  font-family: var(--font-display);
  font-size: 1.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

body.modal-open {
  overflow: hidden;
}

.modal-root {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 1.25rem;
}

.modal-root[hidden] {
  display: none !important;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(4px);
}

.modal {
  position: relative;
  z-index: 1;
  width: min(440px, 100%);
  max-height: min(90vh, 900px);
  overflow: auto;
  padding: 1.6rem 1.4rem 1.4rem;
  border: 1px solid rgba(196, 164, 106, 0.35);
  background: #101010;
  box-shadow: var(--shadow);
}

.modal-wide {
  width: min(560px, 100%);
}

.modal[hidden] {
  display: none !important;
}

.modal-close {
  position: absolute;
  top: 0.55rem;
  right: 0.7rem;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
}

.modal-close:hover {
  color: var(--gold);
}

.modal h2 {
  margin: 0.35rem 0 0.4rem;
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.modal-lede,
.modal-success {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.modal-success {
  color: #ebe4d8;
}

.modal-form label {
  display: block;
  margin: 0 0 0.35rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
}

.modal-form .optional {
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: none;
  font-size: 0.7rem;
}

.modal-form input,
.modal-form textarea,
.modal-form select,
.admin-select {
  width: 100%;
  margin-bottom: 0.85rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  background: #0d0d0d;
  color: var(--text);
  font: inherit;
  border-radius: 0;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
}

.modal-form select,
.admin-select {
  background-image: linear-gradient(45deg, transparent 50%, var(--gold) 50%),
    linear-gradient(135deg, var(--gold) 50%, transparent 50%);
  background-position: calc(100% - 18px) calc(50% - 3px), calc(100% - 12px) calc(50% - 3px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 2rem;
}

.modal-form select:focus,
.admin-select:focus,
.modal-form input:focus,
.modal-form textarea:focus {
  outline: none;
  border-color: rgba(196, 164, 106, 0.65);
}

.modal-form textarea {
  resize: vertical;
  min-height: 84px;
}

.modal-form .btn {
  width: 100%;
}

.modal-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

.modal-actions .btn {
  width: 100%;
}

.signup-steps {
  display: flex;
  gap: 0.45rem;
  margin: 0 0 1rem;
}

.signup-steps span {
  width: 1.6rem;
  height: 1.6rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.signup-steps span.is-active,
.signup-steps span.is-done {
  border-color: var(--gold);
  color: var(--gold);
}

.signup-review {
  margin-bottom: 1rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  background: #0d0d0d;
}

.signup-review p {
  margin: 0.25rem 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
}

.footer-links span {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--gold);
}

@media (max-width: 980px) {
  .catalog-grid,
  .catalog-grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .catalog-grid,
  .catalog-grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Calendar */
.cal-schedule {
  display: grid;
  gap: 2rem;
}

.cal-month-title {
  margin: 0 0 0.85rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid rgba(196, 164, 106, 0.35);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gold);
}

.cal-month-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.cal-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 0.9rem;
  align-items: center;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition: color 0.15s ease;
}

.cal-thumb {
  display: block;
  width: 72px;
  height: 56px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #0d0d0d;
}

.cal-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(0.1) contrast(1.05);
}

.cal-row-body {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  min-width: 0;
}

.cal-row:hover .cal-course-name,
.cal-row:hover .more {
  color: var(--gold);
}

.cal-row-main {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.45rem 0.75rem;
  min-width: 0;
}

.cal-course-name {
  font-weight: 700;
  font-size: 1.05rem;
}

.cal-row-date {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.cal-row-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: flex-end;
  gap: 0.65rem 1rem;
  color: var(--text-muted);
  font-size: 0.92rem;
  white-space: nowrap;
}

.cal-price {
  color: var(--gold);
  font-weight: 600;
}

.cal-place {
  color: var(--text-muted);
}

@media (max-width: 720px) {
  .cal-row {
    grid-template-columns: 64px 1fr;
  }

  .cal-row-body {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

  .cal-row-meta {
    justify-content: flex-start;
    white-space: normal;
  }
}

/* Admin tools */
.admin-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 0 0 1.5rem;
}

.account-settings {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.75rem;
  margin: 1.5rem 0 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.account-settings .modal-form label {
  display: block;
  margin: 0 0 0.35rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
}

.account-settings .modal-form input,
.account-settings .modal-form select,
.account-settings .modal-form textarea {
  width: 100%;
  margin-bottom: 0.85rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--line);
  background: #0d0d0d;
  color: var(--text);
}

.linkish {
  appearance: none;
  background: none;
  border: 0;
  padding: 0;
  margin: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.linkish:hover strong,
button.more {
  color: var(--gold);
}

button.more {
  appearance: none;
  background: none;
  border: 0;
  padding: 0;
  color: var(--gold);
  cursor: pointer;
  font: inherit;
}

.student-search {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1rem 0 1.25rem;
}

.student-search input,
.student-search select {
  min-height: 44px;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--line);
  background: #0d0d0d;
  color: var(--text);
}

.student-search input[type="search"] {
  flex: 1 1 220px;
}

.status-guide {
  margin: 0 0 1.25rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  background: #0d0d0d;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.status-guide ul {
  margin: 0.5rem 0 0;
  padding-left: 1.1rem;
}

.status-guide code {
  color: var(--gold);
}

.history-card {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
}

.history-card .muted {
  color: var(--text-muted);
  font-size: 0.82rem;
  margin-top: 0.2rem;
}

.history-actions {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.4rem;
  align-items: center;
  flex-shrink: 0;
}

.history-actions .admin-select {
  width: auto;
  min-width: 132px;
  margin-bottom: 0;
  min-height: 38px;
  padding: 0.35rem 1.8rem 0.35rem 0.55rem;
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid var(--line);
  background: #0d0d0d;
  color: var(--gold);
  cursor: pointer;
  flex: 0 0 auto;
}

.icon-btn svg {
  width: 16px;
  height: 16px;
  display: block;
}

.icon-btn:hover {
  border-color: rgba(196, 164, 106, 0.65);
  color: #ebe4d8;
}

.icon-btn-danger {
  color: #c97a7a;
}

.icon-btn-danger:hover {
  border-color: rgba(201, 122, 122, 0.55);
  color: #efb0b0;
}

.admin-modal-root .admin-select,
.admin-modal-root .modal-form select {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.modal-actions .btn-ghost[hidden] + .btn-gold {
  grid-column: 1 / -1;
}

.student-profile-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 1rem;
}

.admin-modal-root .student-modal {
  display: flex;
  flex-direction: column;
  max-height: min(90vh, 900px);
  overflow: hidden;
  padding: 0;
}

.student-modal-header {
  position: sticky;
  top: 0;
  z-index: 2;
  flex: 0 0 auto;
  padding: 1.25rem 1.4rem 0.85rem;
  border-bottom: 1px solid var(--line);
  background: #101010;
}

.student-modal-header .modal-close {
  top: 0.7rem;
  right: 0.85rem;
}

.student-modal-header h2 {
  margin-right: 2rem;
}

.student-modal-body {
  flex: 1 1 auto;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  padding: 1rem 1.4rem 1.4rem;
}

.confirm-sheet {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 1.25rem;
  background: rgba(0, 0, 0, 0.72);
}

.confirm-sheet[hidden] {
  display: none !important;
}

.confirm-sheet-card {
  width: min(420px, 100%);
  padding: 1.35rem 1.25rem;
  border: 1px solid var(--line);
  background: #121212;
  box-shadow: var(--shadow);
}

.confirm-sheet-card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 1.35rem;
  color: var(--gold);
}

.confirm-sheet-card p {
  margin: 0 0 1.1rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.confirm-sheet-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

.confirm-sheet-actions .btn {
  min-height: 48px;
}

.icon-btn {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.icon-btn svg,
.icon-btn path {
  pointer-events: none;
}

.badge.postponed,
.badge.transferred,
.badge.waitlisted { color: #e0c37a; }
.badge.completed { color: #8fbf8f; border-color: rgba(143, 191, 143, 0.35); }
.badge.no_show,
.badge.refunded { color: #c97a7a; border-color: rgba(201, 122, 122, 0.35); }

@media (max-width: 900px) {
  .account-settings,
  .student-profile-grid {
    grid-template-columns: 1fr;
  }

  .history-card {
    flex-direction: column;
  }
}

.admin-grid {
  display: grid;
  grid-template-columns: minmax(280px, 420px) 1fr;
  gap: 1.75rem;
  align-items: start;
}

.admin-h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 1.35rem;
}

.admin-grid .modal-form label {
  display: block;
  margin: 0 0 0.35rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
}

.admin-grid .modal-form input,
.admin-grid .modal-form select,
.admin-grid .modal-form textarea {
  width: 100%;
  margin-bottom: 0.85rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--line);
  background: #0d0d0d;
  color: var(--text);
}

.admin-grid .modal-form input[type="file"] {
  padding: 0.4rem 0;
  border: 0;
  background: transparent;
}

.is-active-filter {
  border-color: var(--gold) !important;
  color: var(--gold) !important;
}

@media (max-width: 980px) {
  .admin-grid {
    grid-template-columns: 1fr;
  }

  .cal-card {
    grid-template-columns: 100px 1fr;
  }
}

@media (max-width: 640px) {
  .cal-card {
    grid-template-columns: 1fr;
  }

  .cal-card-media {
    min-height: 160px;
  }

  .cal-card-body {
    padding: 0 1rem 1rem;
  }
}