:root {
  --tdi-bg: #f7f4ff;
  --tdi-bg-2: #faf8ff;
  --tdi-surface: rgba(255,255,255,0.94);
  --tdi-surface-2: #ffffff;
  --tdi-surface-soft: #f4efff;
  --tdi-sidebar: #efe7ff;
  --tdi-sidebar-2: #e7ddff;
  --tdi-text: #32284a;
  --tdi-muted: #75698e;
  --tdi-border: rgba(91, 73, 142, 0.12);
  --tdi-primary: #8b63ff;
  --tdi-primary-2: #6f4fe0;
  --tdi-primary-soft: #efe9ff;
  --tdi-success: #17a06f;
  --tdi-success-soft: #ebfaf4;
  --tdi-danger-soft: #fff1f5;
  --tdi-danger-text: #9f345d;
  --tdi-radius: 24px;
  --tdi-radius-md: 16px;
  --tdi-shadow: 0 24px 60px rgba(124, 92, 197, 0.10);
  --tdi-shadow-soft: 0 12px 28px rgba(124, 92, 197, 0.08);
}

.tdi-shell,
.tdi-auth-wrap,
.tdi-app-layout { font-family: 'Poppins', system-ui, sans-serif; color: var(--tdi-text); }
.tdi-shell,
.tdi-auth-wrap { max-width: 1240px; margin: 0 auto; padding: 20px; }

.tdi-auth-wrap {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(320px, 0.92fr);
  gap: 18px;
  background: linear-gradient(180deg, #fdfcff 0%, #f6f1ff 100%);
  border: 1px solid var(--tdi-border);
  border-radius: 30px;
  box-shadow: var(--tdi-shadow);
  overflow: hidden;
}

.tdi-login-hero .tdi-auth-brand { padding: 32px; display: grid; gap: 18px; align-content: center; }
.tdi-brand-badge { width: 86px; height: 86px; border-radius: 24px; background: #fff; display: grid; place-items: center; box-shadow: var(--tdi-shadow-soft); }
.tdi-logo { width: 54px; height: 54px; object-fit: contain; }
.tdi-logo-hero { width: 60px; height: 60px; }
.tdi-logo-small { width: 40px; height: 40px; }

.tdi-auth-brand h2,
.tdi-page-head h1,
.tdi-page-head h2,
.tdi-card h3 { margin: 0; line-height: 1.12; }
.tdi-auth-brand h2 { font-size: clamp(34px, 5vw, 50px); max-width: 9ch; }
.tdi-page-head h1 { font-size: clamp(26px, 3vw, 36px); }

.tdi-hero-actions,
.tdi-brand-lockup,
.tdi-card-head,
.tdi-page-head,
.tdi-actions,
.tdi-head-actions,
.tdi-info-bar,
.tdi-inline-stats,
.tdi-row-actions,
.tdi-page-identity { display: flex; align-items: center; gap: 12px; }
.tdi-card-head,
.tdi-page-head,
.tdi-info-bar,
.tdi-brand-lockup { justify-content: space-between; }
.tdi-page-head,
.tdi-tab-nav { margin-bottom: 16px; }
.tdi-page-head-hero { background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(255,255,255,0.78)); border: 1px solid var(--tdi-border); border-radius: 24px; padding: 18px 20px; box-shadow: var(--tdi-shadow-soft); }
.tdi-page-identity { align-items: flex-start; }
.tdi-brand-lockup-left { justify-content: flex-start; }

.tdi-feature-stack,
.tdi-stack,
.tdi-student-list,
.tdi-auth-grid-single,
.tdi-mini-grid,
.tdi-grid-3,
.tdi-grid-4 { display: grid; gap: 14px; }
.tdi-auth-grid-single { align-content: center; padding: 20px; }
.tdi-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.tdi-grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.tdi-mini-grid { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }

.tdi-app-layout { display: grid; grid-template-columns: 290px minmax(0, 1fr); gap: 18px; max-width: 1420px; margin: 0 auto; padding: 16px; }
.tdi-sidebar { position: sticky; top: 18px; align-self: start; border-radius: 24px; padding: 18px; box-shadow: var(--tdi-shadow-soft); }
.tdi-sidebar-soft { background: linear-gradient(180deg, var(--tdi-sidebar) 0%, var(--tdi-sidebar-2) 100%); border: 1px solid rgba(139,99,255,0.10); }
.tdi-sidebar h2,
.tdi-sidebar span,
.tdi-sidebar small,
.tdi-sidebar .tdi-eyebrow,
.tdi-sidebar label { color: var(--tdi-text); }

.tdi-card { background: var(--tdi-surface); backdrop-filter: blur(14px); border: 1px solid var(--tdi-border); border-radius: var(--tdi-radius); box-shadow: var(--tdi-shadow-soft); padding: 18px; margin-bottom: 16px; }
.tdi-login-card { padding: 22px; }
.tdi-elevated { box-shadow: var(--tdi-shadow); }
.tdi-subcard { background: var(--tdi-surface-2); box-shadow: none; margin-bottom: 0; padding: 16px; }
.tdi-mini-card { border: 1px solid var(--tdi-border); border-radius: 16px; background: var(--tdi-surface-2); padding: 12px; display: grid; gap: 4px; }
.tdi-mini-card-dark { background: rgba(255,255,255,0.58); }

.tdi-eyebrow { margin: 0 0 4px; font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--tdi-primary-2); font-weight: 800; }
.tdi-muted-copy,
.tdi-card p,
.tdi-list span,
.tdi-list small,
.tdi-mini-card small { color: var(--tdi-muted); }
.tdi-separator { border: 0; border-top: 1px solid var(--tdi-border); margin: 18px 0; }

.tdi-form { display: grid; gap: 12px; }
.tdi-form label { display: grid; gap: 6px; font-size: 13px; color: var(--tdi-muted); }
.tdi-form input,
.tdi-form select,
.tdi-form textarea,
.tdi-auth-wrap input,
.tdi-auth-wrap .login input {
  width: 100%; box-sizing: border-box; border: 1px solid var(--tdi-border); border-radius: 14px; background: #fff; color: var(--tdi-text); padding: 11px 13px; outline: none;
}
.tdi-form input:focus,
.tdi-form select:focus,
.tdi-form textarea:focus,
.tdi-auth-wrap .login input:focus { border-color: rgba(139,99,255,0.35); box-shadow: 0 0 0 3px rgba(139,99,255,0.10); }
.tdi-search-form input { background: rgba(255,255,255,0.8); }

.tdi-btn,
.tdi-auth-wrap .button,
.tdi-auth-wrap input[type="submit"] {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 14px; min-height: 42px; border-radius: 14px; font-weight: 700; text-decoration: none; border: 1px solid transparent; cursor: pointer;
}
.tdi-btn-primary,
.tdi-auth-wrap .button,
.tdi-auth-wrap input[type="submit"] { background: linear-gradient(180deg, var(--tdi-primary) 0%, var(--tdi-primary-2) 100%); color: #fff; }
.tdi-btn-ghost { background: rgba(255,255,255,0.76); color: var(--tdi-text); border-color: var(--tdi-border); }
.tdi-btn-danger-soft { background: var(--tdi-danger-soft); color: var(--tdi-danger-text); border-color: rgba(159,52,93,0.10); }
.tdi-chip { display: inline-flex; align-items: center; gap: 8px; padding: 8px 11px; background: #efe8ff; color: var(--tdi-primary-2); border-radius: 999px; font-size: 12px; font-weight: 700; }
.tdi-chip-soft { background: #f6f0ff; color: #7a58e6; }

.tdi-tab-nav { display: flex; gap: 10px; flex-wrap: wrap; }
.tdi-tab-link { text-decoration: none; padding: 10px 14px; border-radius: 14px; background: rgba(255,255,255,0.78); border: 1px solid var(--tdi-border); color: var(--tdi-muted); font-weight: 700; }
.tdi-tab-link.is-active { background: #f0e8ff; color: var(--tdi-primary-2); border-color: rgba(139,99,255,0.14); }

.tdi-student-pill { display: grid; gap: 3px; text-decoration: none; color: var(--tdi-text); background: rgba(255,255,255,0.68); border: 1px solid rgba(139,99,255,0.10); border-radius: 14px; padding: 12px; }
.tdi-student-pill.is-active { background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(246,241,255,0.98)); border-color: rgba(139,99,255,0.18); box-shadow: inset 0 0 0 1px rgba(139,99,255,0.06); }

.tdi-kpi { min-width: 98px; background: rgba(255,255,255,0.96); border: 1px solid var(--tdi-border); border-radius: 16px; padding: 10px 12px; display: grid; gap: 2px; }
.tdi-kpi strong { font-size: 20px; line-height: 1; }
.tdi-kpi span { color: var(--tdi-muted); font-size: 12px; }
.tdi-info-bar { background: var(--tdi-surface-soft); border: 1px solid rgba(139,99,255,0.10); border-radius: 14px; padding: 12px 14px; margin-top: 12px; flex-wrap: wrap; }

.tdi-alert { background: #f6f2ff; color: var(--tdi-primary-2); border: 1px solid rgba(139,99,255,0.14); padding: 12px 14px; border-radius: 14px; margin-bottom: 14px; }
.tdi-alert-success { background: var(--tdi-success-soft); color: #0f7752; border-color: rgba(23,160,111,0.14); }
.tdi-alert-danger { background: var(--tdi-danger-soft); color: var(--tdi-danger-text); border-color: rgba(159,52,93,0.12); }

.tdi-table-wrap { overflow-x: auto; }
.tdi-table { width: 100%; border-collapse: collapse; }
.tdi-table th,
.tdi-table td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--tdi-border); vertical-align: top; font-size: 13px; }
.tdi-link,
.tdi-link-btn { color: var(--tdi-primary-2); text-decoration: none; font-weight: 700; background: none; border: 0; padding: 0; }
.tdi-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.tdi-list li { display: grid; gap: 3px; padding-bottom: 10px; border-bottom: 1px dashed var(--tdi-border); }
.tdi-empty-state { color: var(--tdi-muted); padding: 12px; border: 1px dashed var(--tdi-border); border-radius: 14px; }
.tdi-span-2 { grid-column: span 2; }

.tdi-calendar-photo { background: #fff; box-shadow: none; }
.tdi-calendar-minimal { padding: 12px; }
.tdi-photo-table { width: 100%; border-collapse: separate; border-spacing: 0; table-layout: fixed; background: #fff; }
.tdi-photo-table th,
.tdi-photo-table td { border-right: 1px solid #ece5ff; border-bottom: 1px solid #ece5ff; text-align: center; padding: 8px 6px; background: #fff; }
.tdi-photo-table th:first-child,
.tdi-photo-table td:first-child { border-left: 1px solid #ece5ff; }
.tdi-photo-table thead th { background: #faf7ff; font-size: 12px; font-weight: 700; color: #6d5b8b; }
.tdi-photo-hour { font-size: 12px; font-weight: 600; width: 76px; color: #73678c; }
.tdi-photo-cell { height: 38px; font-weight: 600; font-size: 11px; }
.tdi-photo-cell.is-available { background: #f8f4ff; color: #7a58e6; }
.tdi-photo-cell.is-reserved { background: #efe9ff; color: #5c4b87; }
.tdi-photo-cell.is-empty { color: transparent; }

@media (max-width: 1180px) {
  .tdi-app-layout,
  .tdi-auth-wrap,
  .tdi-grid-3,
  .tdi-grid-4 { grid-template-columns: 1fr; }
  .tdi-sidebar { position: static; }
  .tdi-span-2 { grid-column: auto; }
}

@media (max-width: 760px) {
  .tdi-shell,
  .tdi-auth-wrap,
  .tdi-app-layout { padding: 12px; }
  .tdi-card,
  .tdi-page-head-hero { padding: 14px; border-radius: 18px; }
  .tdi-auth-brand { padding: 20px !important; }
  .tdi-page-head,
  .tdi-card-head,
  .tdi-info-bar,
  .tdi-brand-lockup,
  .tdi-page-identity,
  .tdi-hero-actions { flex-direction: column; align-items: flex-start; }
  .tdi-auth-brand h2 { max-width: none; }
}


.tdi-login-guardian-first { grid-template-columns: minmax(360px, 1.05fr) minmax(320px, 0.85fr); }
.tdi-full-btn { width: 100%; }
.tdi-inline-divider { position: relative; text-align: center; margin: 16px 0; }
.tdi-inline-divider::before { content: ''; position: absolute; left: 0; right: 0; top: 50%; height: 1px; background: var(--tdi-border); }
.tdi-inline-divider span { position: relative; z-index: 1; display: inline-block; background: #fff; padding: 0 10px; color: var(--tdi-muted); font-size: 12px; }
.tdi-week-nav { margin-bottom: 10px; }
.tdi-calendar-footer { display: flex; justify-content: flex-end; margin-top: 10px; }
.tdi-modal { position: fixed; inset: 0; display: none; z-index: 9999; }
.tdi-modal.is-open { display: block; }
.tdi-modal-backdrop { position: absolute; inset: 0; background: rgba(40, 24, 72, 0.38); backdrop-filter: blur(8px); }
.tdi-modal-card { position: relative; max-width: 460px; margin: 8vh auto; background: rgba(255,255,255,0.97); border: 1px solid var(--tdi-border); border-radius: 24px; box-shadow: var(--tdi-shadow); padding: 22px; z-index: 2; }
.tdi-modal-close { position: absolute; right: 14px; top: 10px; width: 34px; height: 34px; border-radius: 50%; border: 0; background: #f3edff; color: var(--tdi-primary-2); font-size: 24px; line-height: 1; cursor: pointer; }
body.tdi-modal-open { overflow: hidden; }
@media (max-width: 760px) {
  .tdi-modal-card { margin: 4vh 12px; padding: 18px; }
}