/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: #f5f7fa;
  color: #1a1a2e;
  line-height: 1.6;
}

a { color: #4361ee; text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* === Header === */
.site-header {
  background: #1a1a2e;
  color: #fff;
  padding: 1rem 0;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.site-header h1 { font-size: 1.3rem; font-weight: 700; color: #fff; }
.site-header nav a { color: #a0aec0; margin-left: 1.5rem; font-size: 0.9rem; }
.site-header nav a.active,
.site-header nav a:hover { color: #fff; text-decoration: none; }

/* === Auth Gate === */
.auth-gate {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: #f5f7fa;
}
.auth-gate__box {
  background: #fff;
  border-radius: 12px;
  padding: 2.5rem 3rem;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0,0,0,0.1);
}
.auth-gate__box h2 { margin-bottom: 0.5rem; }
.auth-gate__box p { color: #64748b; margin-bottom: 1.5rem; }

/* === Main === */
main { padding: 2.5rem 0 4rem; }
.page-intro h2 { font-size: 1.8rem; margin-bottom: 1rem; color: #1a1a2e; }

/* === Notices === */
.notice {
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font-size: 0.92rem;
}
.notice ul { margin: 0.5rem 0 0.75rem 1.25rem; }
.notice p { margin-top: 0.5rem; }
.notice--info { background: #ebf4ff; border-left: 4px solid #4361ee; }
.notice--warning { background: #fff8e1; border-left: 4px solid #f59e0b; }
.notice--tip { background: #f0fdf4; border-left: 4px solid #22c55e; }

/* === Badges === */
.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  vertical-align: middle;
  margin-left: 0.35rem;
}
.badge--required { background: #fee2e2; color: #b91c1c; }
.badge--recommended { background: #fef3c7; color: #92400e; }
.badge--optional { background: #e0e7ff; color: #3730a3; }

/* === Form Sections === */
.form-section {
  background: #fff;
  border-radius: 12px;
  padding: 2rem;
  margin-top: 2rem;
  box-shadow: 0 1px 4px rgba(0,0,0,0.07);
}
.form-section h3 { font-size: 1.2rem; margin-bottom: 0.4rem; color: #1a1a2e; }
.section-desc { color: #64748b; font-size: 0.93rem; margin-bottom: 1.25rem; }

/* === Fields === */
.field-group { margin-bottom: 1.5rem; }
.field-group label { display: block; font-weight: 600; margin-bottom: 0.4rem; font-size: 0.95rem; }
.field-group input[type="text"],
.field-group input[type="email"],
.field-group textarea {
  width: 100%;
  border: 1.5px solid #cbd5e1;
  border-radius: 8px;
  padding: 0.65rem 0.85rem;
  font-size: 0.95rem;
  font-family: inherit;
  background: #f8fafc;
  transition: border-color 0.2s;
}
.field-group input:focus,
.field-group textarea:focus { outline: none; border-color: #4361ee; background: #fff; }
.field-group input[type="file"] { display: block; margin-top: 0.4rem; font-size: 0.9rem; }
.field-hint { display: block; font-size: 0.82rem; color: #94a3b8; margin-top: 0.35rem; }
.template-link { display: inline-block; font-size: 0.82rem; margin-bottom: 0.4rem; color: #4361ee; }

/* === Buttons === */
.form-actions { margin-top: 2.5rem; text-align: center; }
.btn {
  display: inline-block;
  padding: 0.8rem 2.5rem;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.2s;
}
.btn--primary { background: #4361ee; color: #fff; }
.btn--primary:hover { background: #3451d1; }
.btn--secondary { background: #e2e8f0; color: #1e293b; }
.btn--secondary:hover { background: #cbd5e1; }
.btn--danger { background: #b91c1c; color: #fff; }
.btn--danger:hover { background: #991b1b; }
.btn--small { padding: 0.55rem 0.9rem; font-size: 0.85rem; }
.form-note { margin-top: 0.75rem; font-size: 0.85rem; color: #94a3b8; }

/* === Admin === */
.admin-page { padding-bottom: 4rem; }
.admin-list, .reasons-manager { display: grid; gap: 1rem; }

.submission-card, .reason-card {
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 1.25rem;
  background: #f8fafc;
}
.submission-card__header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}
.submission-card__header h4 { margin-bottom: 0.25rem; font-size: 1.05rem; }
.submission-card__header p,
.submission-card__body p,
.reason-card__description,
.reason-card__meta { color: #475569; font-size: 0.92rem; }
.submission-card__body { display: grid; gap: 0.5rem; margin-bottom: 1rem; }

/* CSV Preview */
.submission-card__csvs { display: grid; gap: 0.75rem; margin-bottom: 1rem; }
.csv-section {
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}
.csv-section summary {
  padding: 0.75rem 1rem;
  cursor: pointer;
  user-select: none;
  font-size: 0.93rem;
  background: #f1f5f9;
}
.csv-section summary:hover { background: #e2e8f0; }
.csv-table-wrap { overflow-x: auto; padding: 0.75rem 1rem 1rem; }
.csv-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.csv-table th {
  text-align: left;
  padding: 0.4rem 0.75rem;
  background: #f8fafc;
  border-bottom: 2px solid #e2e8f0;
  text-transform: capitalize;
  color: #475569;
  font-weight: 600;
}
.csv-table td {
  padding: 0.4rem 0.75rem;
  border-bottom: 1px solid #f1f5f9;
  color: #1e293b;
}
.csv-table tr:last-child td { border-bottom: none; }
.csv-table .empty { color: #cbd5e1; }

.submission-card__review {
  border-top: 1px solid #e2e8f0;
  padding-top: 1rem;
  display: grid;
  gap: 1rem;
}
.checkbox-group { display: grid; gap: 0.75rem; margin-top: 0.75rem; }
.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 0.85rem;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: #fff;
}
.checkbox-row input { margin-top: 0.2rem; }
.submission-card__buttons, .reason-card__actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.reason-card__content { display: flex; justify-content: space-between; gap: 1rem; align-items: flex-start; }
.reason-card__label { font-weight: 700; margin-bottom: 0.35rem; }
.inline-form { display: grid; gap: 1rem; margin-bottom: 1.5rem; }
.csv-feedback { margin-top: 0.5rem; }
.validation-error, .validation-warning { font-size: 0.85rem; margin-top: 0.35rem; }
.validation-error { color: #b91c1c; }
.validation-warning { color: #92400e; }

/* === Footer === */
.site-footer {
  background: #1a1a2e;
  color: #64748b;
  text-align: center;
  padding: 1.25rem 0;
  font-size: 0.85rem;
}

@media (max-width: 720px) {
  .site-header .container,
  .submission-card__header,
  .reason-card__content { flex-direction: column; align-items: flex-start; }
  .site-header nav a { margin-left: 0; margin-right: 1rem; }
}