/* ── Design tokens ─────────────────────────────────────────────────── */
:root {
  --navy: #1b3a6b;
  --navy-dark: #122a52;
  --navy-light: #2a4f8f;
  --gold: #f0b429;
  --gold-light: #fcd34d;
  --white: #ffffff;
  --bg: #f0f4f9;
  --card: #ffffff;
  --text: #1f2937;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --success: #10b981;
  --error: #ef4444;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(27, 58, 107, 0.10);
  --shadow-hover: 0 8px 32px rgba(27, 58, 107, 0.18);
}

/* ── Reset ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

/* ── Typography ────────────────────────────────────────────────────── */
h1, h2, h3 { font-weight: 700; line-height: 1.25; }
p { color: var(--text-muted); }

/* ── Header ────────────────────────────────────────────────────────── */
.site-header {
  background: var(--navy);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}
.site-header img.logo {
  height: 48px;
  width: auto;
  object-fit: contain;
}
.site-header .header-title {
  color: var(--white);
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.3;
}
.site-header .header-title span {
  display: block;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ── Page layout ───────────────────────────────────────────────────── */
.page-wrapper {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}
.page-wrapper.wide { max-width: 1100px; }

/* ── Card ──────────────────────────────────────────────────────────── */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card-header {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  padding: 36px 40px 32px;
  position: relative;
}
.card-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 4px;
  background: var(--gold);
}
.card-header .workshop-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}
.card-header h1 {
  color: var(--white);
  font-size: 1.7rem;
  margin-bottom: 6px;
}
.card-header .subtitle {
  color: rgba(255,255,255,0.75);
  font-size: 0.95rem;
}
.card-header .course-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(240, 180, 41, 0.15);
  border: 1px solid rgba(240, 180, 41, 0.4);
  color: var(--gold-light);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  margin-top: 14px;
}
.card-body { padding: 40px; }

/* ── Form fields ───────────────────────────────────────────────────── */
.form-section {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  margin-top: 28px;
}
.form-section:first-child { border-top: none; padding-top: 0; margin-top: 0; }
.section-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 18px;
}

.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
  margin-bottom: 7px;
}
.form-group label .required {
  color: var(--error);
  margin-left: 2px;
}
.form-control {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  color: var(--text);
  background: var(--white);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  font-family: inherit;
}
.form-control:focus {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(27, 58, 107, 0.1);
}
textarea.form-control { resize: vertical; min-height: 90px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ── Confidence scale ──────────────────────────────────────────────── */
.confidence-scale {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.confidence-scale input[type="radio"] { display: none; }
.confidence-scale label {
  flex: 1;
  min-width: 50px;
  text-align: center;
  padding: 10px 8px;
  border: 2px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.18s;
  margin-bottom: 0;
}
.confidence-scale input[type="radio"]:checked + label {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(27,58,107,0.25);
}
.confidence-scale label:hover {
  border-color: var(--navy);
  color: var(--navy);
}
.scale-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 6px;
  padding: 0 2px;
}

/* ── Yes/No toggle ─────────────────────────────────────────────────── */
.yn-group { display: flex; gap: 10px; }
.yn-group input[type="radio"] { display: none; }
.yn-group label {
  padding: 9px 28px;
  border: 2px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: all 0.18s;
  margin-bottom: 0;
}
.yn-group input[type="radio"]:checked + label {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--white);
}
.yn-group label:hover { border-color: var(--navy); color: var(--navy); }

/* ── Submit button ─────────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--gold);
  color: var(--navy-dark);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 32px;
  border: none;
  border-radius: 9px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  letter-spacing: 0.01em;
}
.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(240,180,41,0.4);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--navy);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 10px 20px;
  border: 2px solid var(--navy);
  border-radius: 9px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}
.btn-secondary:hover { background: var(--navy); color: white; }
.btn-danger {
  background: #fee2e2;
  color: #991b1b;
  border: none;
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
}

/* ── Errors ────────────────────────────────────────────────────────── */
.error-box {
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  padding: 14px 18px;
  margin-bottom: 24px;
}
.error-box p { color: var(--error); font-size: 0.9rem; margin-bottom: 4px; }
.error-box p:last-child { margin-bottom: 0; }

/* ── Flash messages ────────────────────────────────────────────────── */
.flash { padding: 12px 18px; border-radius: 8px; margin-bottom: 20px; font-size: 0.9rem; }
.flash.success { background: #d1fae5; color: #065f46; border: 1px solid #a7f3d0; }
.flash.error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

/* ── Success page ──────────────────────────────────────────────────── */
.success-card {
  text-align: center;
  padding: 60px 40px;
}
.success-icon { font-size: 4rem; margin-bottom: 20px; animation: pop 0.5s ease; }
@keyframes pop {
  0% { transform: scale(0.5); opacity: 0; }
  80% { transform: scale(1.1); }
  100% { transform: scale(1); opacity: 1; }
}
.success-card h1 { color: var(--navy); font-size: 1.8rem; margin-bottom: 12px; }
.success-card p { font-size: 1.05rem; max-width: 440px; margin: 0 auto; }
.email-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 20px;
  margin-top: 28px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* ── Admin ─────────────────────────────────────────────────────────── */
.admin-nav {
  background: var(--navy-dark);
  padding: 12px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.admin-nav span { color: rgba(255,255,255,0.7); font-size: 0.85rem; }
.admin-nav a { color: var(--gold); font-size: 0.85rem; text-decoration: none; }

.admin-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; margin-bottom: 32px; }
.workshop-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.workshop-card-header {
  background: var(--navy);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.workshop-card-header .icon { font-size: 1.4rem; }
.workshop-card-header h3 { color: white; font-size: 1rem; }
.workshop-card-body { padding: 20px; }
.workshop-card-body label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.qr-container { text-align: center; margin-top: 16px; }
.qr-container img { width: 100%; max-width: 140px; border-radius: 8px; border: 1px solid var(--border); }
.qr-url {
  font-size: 0.7rem;
  color: var(--text-muted);
  word-break: break-all;
  margin-top: 6px;
  display: block;
}

.admin-table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.87rem; }
thead th {
  background: var(--navy);
  color: white;
  padding: 11px 14px;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}
tbody tr:nth-child(even) { background: #f8fafc; }
tbody td { padding: 10px 14px; border-bottom: 1px solid var(--border); color: var(--text); }
.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
}
.badge-parent { background: #dbeafe; color: #1e40af; }
.badge-student { background: #d1fae5; color: #065f46; }
.badge-teacher { background: #ede9fe; color: #5b21b6; }
.badge-sent { background: #d1fae5; color: #065f46; }
.badge-pending { background: #fef3c7; color: #92400e; }

/* ── Login page ────────────────────────────────────────────────────── */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 100%);
  padding: 20px;
}
.login-card {
  background: white;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  padding: 48px 44px;
  width: 100%;
  max-width: 420px;
  text-align: center;
}
.login-card img.logo { height: 64px; margin-bottom: 24px; }
.login-card h1 { color: var(--navy); font-size: 1.4rem; margin-bottom: 6px; }
.login-card p { font-size: 0.9rem; margin-bottom: 28px; }

/* ── Responsive ────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .card-body { padding: 24px 20px; }
  .card-header { padding: 28px 24px 24px; }
  .form-row { grid-template-columns: 1fr; }
  .admin-grid { grid-template-columns: 1fr; }
  .confidence-scale label { padding: 8px 4px; font-size: 0.82rem; }
}