/* ═══════════════════════════════════════════════════
   PROGRAMME REGISTRATION PORTAL — STYLES v3
════════════════════════════════════════════════════ */

:root {
  --primary:       #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --success:       #10b981;
  --warning:       #f59e0b;
  --danger:        #ef4444;
  --text:          #0f172a;
  --muted:         #64748b;
  --border:        #cbd5e1;
  --bg:            #f1f5f9;
  --card:          #ffffff;
  --radius:        12px;
  --shadow:        0 4px 14px rgba(0,0,0,0.08);
  --font:          'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

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

.hidden { display: none !important; }

/* ── OVERLAY / MODAL ──────────────────────────────── */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 2rem 2.25rem;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 20px 50px rgba(0,0,0,0.2);
  text-align: center;
}

.modal-icon {
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: 0.75rem;
}

.modal-card h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.modal-card p {
  color: var(--muted);
  font-size: 0.93rem;
  margin-bottom: 0.5rem;
}

.modal-card .form-group {
  text-align: left;
  margin-bottom: 0.85rem;
}

.modal-card label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: #334155;
  margin-bottom: 0.3rem;
}

/* ── NAVBAR ───────────────────────────────────────── */
.navbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}

.badge-mode {
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.badge-participant { background: #e0f2fe; color: #0369a1; }
.badge-host        { background: #fef3c7; color: #b45309; }

/* ── LAYOUT ───────────────────────────────────────── */
.view-section {
  max-width: 1100px;
  width: 92%;
  margin: 2rem auto;
  flex: 1;
}

/* ── CARDS ────────────────────────────────────────── */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(226,232,240,0.8);
}

.form-card {
  max-width: 640px;
  margin: 1rem auto;
}

.card-header { margin-bottom: 1.75rem; text-align: center; }
.card-header h2 {
  font-size: 1.6rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}
.card-header p { color: var(--muted); font-size: 0.95rem; margin-top: 0.3rem; }

/* ── FORM ELEMENTS ────────────────────────────────── */
.form-group { margin-bottom: 1.3rem; }

.form-group > label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
  color: #1e293b;
}
.form-group > label i { color: var(--primary); margin-right: 0.3rem; }

.required { color: var(--danger); }

.form-control {
  width: 100%;
  padding: 0.72rem 1rem;
  font-size: 1rem;
  font-family: inherit;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,0.15);
}

.help-text    { display: block; font-size: 0.82rem; color: var(--muted); margin-top: 0.3rem; }
.error-text   { display: block; font-size: 0.82rem; color: var(--danger); margin-top: 0.3rem; font-weight: 600; }
.success-text { display: block; font-size: 0.88rem; color: var(--success); margin-top: 0.3rem; font-weight: 600; }

/* ── PROGRAMME CHECKBOXES ─────────────────────────── */
.programmes-box {
  border: 1.5px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.programme-row {
  border-bottom: 1px solid #e2e8f0;
  transition: background 0.15s, border-left 0.15s;
}
.programme-row:last-child { border-bottom: none; }

/* Highlight checked row */
.programme-row:has(.programme-check:checked) {
  background: #f5f3ff;
  border-left: 4px solid var(--primary);
}

.prog-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.88rem 1.1rem;
  cursor: pointer;
  user-select: none;
}
.prog-label:hover { background: #f8fafc; }

.programme-check { display: none; }

.checkbox-custom {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  border: 2px solid var(--border);
  border-radius: 5px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.18s;
}
.programme-check:checked ~ .checkbox-custom {
  background: var(--primary);
  border-color: var(--primary);
}
.programme-check:checked ~ .checkbox-custom::after {
  content: '';
  width: 6px;
  height: 10px;
  border: 2px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(45deg) translate(-1px, -1px);
  display: block;
}

.prog-name { font-weight: 600; font-size: 0.97rem; }

.prog-detail { padding: 0 1.1rem 0.88rem 3.3rem; }
.prog-detail .form-control { font-size: 0.92rem; padding: 0.58rem 0.9rem; }

/* ── BUTTONS ──────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.35rem;
  font-size: 0.93rem;
  font-weight: 600;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 10px rgba(79,70,229,0.25);
}
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); }

.btn-secondary { background: #475569; color: #fff; }
.btn-secondary:hover { background: #334155; }

.btn-edit {
  background: #0ea5e9;
  color: #fff;
  box-shadow: 0 4px 10px rgba(14,165,233,0.2);
}
.btn-edit:hover { background: #0284c7; }

.btn-block { width: 100%; }

.btn-sm { padding: 0.45rem 0.9rem; font-size: 0.83rem; }

.btn-copy {
  background: var(--primary);
  color: #fff;
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
  white-space: nowrap;
}
.btn-copy:hover { background: var(--primary-hover); }

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text);
}
.btn-outline:hover { background: #f8fafc; border-color: #94a3b8; }

.btn-danger-outline {
  background: transparent;
  border: 1.5px solid #fca5a5;
  color: var(--danger);
}
.btn-danger-outline:hover { background: #fef2f2; border-color: var(--danger); }

/* ── SUCCESS CARD ─────────────────────────────────── */
.success-card { text-align: center; padding: 0.5rem 0; }

.success-icon-wrapper {
  font-size: 3.5rem;
  color: var(--success);
  margin-bottom: 0.75rem;
  animation: popIn 0.4s ease-out;
}
@keyframes popIn {
  from { transform: scale(0.5); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}

.success-card h3 { font-size: 1.5rem; margin-bottom: 0.4rem; }
.success-subtext { color: var(--muted); font-size: 0.95rem; margin-bottom: 1.1rem; }

.registration-summary-box {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-bottom: 1.1rem;
  text-align: left;
}

.summary-row {
  display: flex;
  flex-direction: column;
  gap: 0.12rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid #e2e8f0;
}
.summary-row:last-child { border-bottom: none; }

.summary-programme { font-weight: 700; color: var(--primary); font-size: 0.93rem; }
.summary-detail    { font-size: 0.88rem; color: #334155; }

/* ── DISCLAIMER ───────────────────────────────────── */
.disclaimer-card {
  background: #fffbeb;
  border: 1.5px solid #fde68a;
  border-left: 5px solid var(--warning);
  border-radius: 8px;
  padding: 0.9rem 1.1rem;
  margin-bottom: 1.1rem;
  text-align: left;
}
.disclaimer-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  color: #b45309;
  font-size: 0.93rem;
  margin-bottom: 0.2rem;
}
.disclaimer-body {
  color: #92400e;
  font-weight: 600;
  font-size: 1rem;
  font-style: italic;
}

/* ── HOST DASHBOARD ───────────────────────────────── */
.host-header-card { background: linear-gradient(135deg,#fff 0%,#f8fafc 100%); }

.host-title-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.host-title-group h2 {
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.host-title-group p { color: var(--muted); font-size: 0.93rem; margin-top: 0.15rem; }

/* SHARE LINK */
.share-link-box {
  background: var(--primary-light);
  border: 1.5px solid #c7d2fe;
  border-radius: 10px;
  padding: 1.1rem;
}
.share-link-header {
  font-weight: 700;
  color: var(--primary);
  font-size: 0.93rem;
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.share-input-group { display: flex; }
.share-link-input {
  flex: 1;
  padding: 0.7rem 1rem;
  border: 1.5px solid #a5b4fc;
  border-right: none;
  border-top-left-radius: 8px;
  border-bottom-left-radius: 8px;
  font-family: monospace;
  font-size: 0.85rem;
  color: #312e81;
  background: #fff;
  min-width: 0;
}
.share-link-input:focus { outline: none; }
.share-note { font-size: 0.79rem; color: #4338ca; margin-top: 0.6rem; display: flex; align-items: center; gap: 0.35rem; }

/* TOOLBAR & STATS */
.spreadsheet-card { padding: 1.5rem; }
.spreadsheet-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.1rem;
}
.toolbar-search { position: relative; flex: 1; min-width: 240px; }
.search-icon {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
}
.search-input {
  width: 100%;
  padding: 0.62rem 1rem 0.62rem 2.3rem;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.91rem;
  font-family: inherit;
}
.toolbar-actions { display: flex; gap: 0.55rem; flex-wrap: wrap; }

.stats-bar {
  display: flex;
  gap: 2rem;
  padding: 0.7rem 1rem;
  background: #f8fafc;
  border-radius: 8px;
  margin-bottom: 1rem;
  font-size: 0.87rem;
  border: 1px solid var(--border);
}
.stat-item { display: flex; gap: 0.4rem; align-items: center; }
.stat-label { color: var(--muted); }
.stat-value { font-weight: 700; }

/* TABLE */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.spreadsheet-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 0.91rem; }
.spreadsheet-table th {
  background: #f1f5f9;
  color: #334155;
  font-weight: 700;
  padding: 0.82rem 1rem;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}
.spreadsheet-table td { padding: 0.82rem 1rem; border-bottom: 1px solid #e2e8f0; }
.spreadsheet-table tbody tr:nth-child(even) { background: #f8fafc; }
.spreadsheet-table tbody tr:hover { background: #eef2ff; }

.col-num { width: 72px; text-align: center; font-weight: 700; color: var(--primary); }
.col-name { font-weight: 600; min-width: 150px; }
.col-programme { min-width: 155px; }
.col-detail { min-width: 215px; }
.col-time { min-width: 135px; font-size: 0.84rem; color: var(--muted); }

.programme-tag {
  display: inline-block;
  padding: 0.23rem 0.55rem;
  border-radius: 6px;
  font-size: 0.81rem;
  font-weight: 600;
  background: #e0e7ff;
  color: #3730a3;
}

.detail-type-badge {
  display: inline-block;
  font-size: 0.77rem;
  font-weight: 700;
  color: #6d28d9;
  background: #ede9fe;
  border-radius: 4px;
  padding: 0.1rem 0.38rem;
  margin-right: 0.3rem;
}

/* EMPTY STATE */
.empty-state { text-align: center; padding: 3rem 1rem; color: var(--muted); }
.empty-icon { font-size: 3rem; margin-bottom: 0.75rem; color: #cbd5e1; }

/* FOOTER */
.app-footer {
  margin-top: auto;
  text-align: center;
  padding: 1.4rem;
  background: var(--card);
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.84rem;
}
.footer-links { margin-bottom: 0.45rem; }
.footer-links a { color: var(--primary); text-decoration: none; font-weight: 600; }
.footer-links a:hover { text-decoration: underline; }

/* ── RESPONSIVE ───────────────────────────────────── */
@media (max-width: 640px) {
  .navbar { padding: 0.85rem 1rem; }
  .card   { padding: 1.2rem; }
  .spreadsheet-toolbar { flex-direction: column; align-items: stretch; }
  .toolbar-actions     { justify-content: flex-start; }
  .share-input-group   { flex-direction: column; }
  .share-link-input {
    border-right: 1.5px solid #a5b4fc;
    border-radius: 8px;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
  }
  .btn-copy {
    border-radius: 8px;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
    width: 100%;
  }
  .host-title-row { flex-direction: column; }
}