/* ============================================================
   reg-guideline.css
   Scoped under .reg-page — ไม่รบกวน nav / footer เลย
   ============================================================ */

/* ===== Tab Navigation ===== */
.tab-nav-section {
  background: white;
  border-bottom: 2px solid #f1f5f9;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

.tab-nav-wrapper {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.tab-nav-wrapper::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1.1rem 1.75rem;
  border: none;
  background: transparent;
  color: #64748b;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: "Noto Sans Thai", sans-serif;
  cursor: pointer;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  transition: all 0.25s ease;
  position: relative;
}

.tab-btn:hover {
  color: #667eea;
  background: #f8faff;
}

.tab-btn.active {
  color: #667eea;
  border-bottom-color: #667eea;
  background: #f8faff;
}

.tab-btn .tab-icon {
  font-size: 1rem;
}

/* ===== Content Section ===== */
.reg-page .content-section {
  padding: 2.5rem 0;
}

/* ===== Content Card ===== */
.reg-page .content-card {
  background: white;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  margin-bottom: 2rem;
}

.reg-page .content-card-header {
  padding: 1.5rem 2rem;
  border-bottom: 2px solid #f1f5f9;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.reg-page .content-card-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #1e293b;
  margin: 0;
}

.reg-page .content-card-body {
  padding: 2rem;
}

/* ===== Info Highlight Box ===== */
.reg-page .info-highlight {
  background: linear-gradient(135deg, #f0f4ff 0%, #f5f0ff 100%);
  border-left: 4px solid #667eea;
  border-radius: 0 12px 12px 0;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  color: #1e293b;
  line-height: 1.8;
}

.reg-page .info-highlight strong {
  color: #667eea;
}

/* ===== Warning / Note Box ===== */
.reg-page .warning-box {
  background: #fff8ed;
  border-left: 4px solid #f59e0b;
  border-radius: 0 12px 12px 0;
  padding: 1rem 1.5rem;
  font-size: 0.9rem;
  color: #92400e;
  margin: 1rem 0;
}

.reg-page .warning-box.danger {
  background: #fff5f5;
  border-left-color: #ef4444;
  color: #991b1b;
}

/* ===== Custom Table ===== */
.reg-page .styled-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.reg-page .styled-table thead tr {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
}

.reg-page .styled-table thead th {
  padding: 1rem;
  font-weight: 600;
  text-align: center;
  border: none;
  font-size: 0.9rem;
}

.reg-page .styled-table tbody td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid #f1f5f9;
  vertical-align: middle;
  color: #2c3e50;
}

.reg-page .styled-table tbody tr:last-child td {
  border-bottom: none;
}

.reg-page .styled-table tbody tr:hover {
  background: #f8faff;
}

.reg-page .styled-table tfoot td {
  background: #f8fafc;
  font-weight: 700;
  padding: 0.9rem 1rem;
  text-align: center;
  color: #1e293b;
}

/* ===== Step List ===== */
.reg-page .step-list {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: step-counter;
}

.reg-page .step-list > li {
  counter-increment: step-counter;
  padding: 1.25rem 1.25rem 1.25rem 4rem;
  margin-bottom: 1rem;
  background: #f8fafc;
  border-radius: 12px;
  position: relative;
  line-height: 1.75;
  color: #2c3e50;
  font-size: 0.95rem;
  border: 1px solid #e2e8f0;
}

.reg-page .step-list > li::before {
  content: counter(step-counter);
  position: absolute;
  left: 1.1rem;
  top: 1.2rem;
  width: 2rem;
  height: 2rem;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

/* ===== Bullet List ===== */
.reg-page .custom-bullet {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0;
}

.reg-page .custom-bullet li {
  padding: 0.4rem 0 0.4rem 1.75rem;
  position: relative;
  line-height: 1.75;
  font-size: 0.93rem;
  color: #374151;
}

.reg-page .custom-bullet li::before {
  content: "";
  position: absolute;
  left: 0.4rem;
  top: 0.85rem;
  width: 8px;
  height: 8px;
  background: #667eea;
  border-radius: 50%;
}

/* ===== Award Cards ===== */
.reg-page .award-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.reg-page .award-card {
  border-radius: 12px;
  padding: 1.25rem;
  text-align: center;
  border: 2px solid;
  transition: transform 0.2s;
}

.reg-page .award-card:hover {
  transform: translateY(-3px);
}

.reg-page .award-card.gold {
  background: linear-gradient(135deg, #fefce8, #fef3c7);
  border-color: #fbbf24;
}

.reg-page .award-card.silver {
  background: linear-gradient(135deg, #f8fafc, #f1f5f9);
  border-color: #94a3b8;
}

.reg-page .award-card.bronze {
  background: linear-gradient(135deg, #fff7ed, #fed7aa);
  border-color: #f97316;
}

.reg-page .award-card.special {
  background: linear-gradient(135deg, #f0fdf4, #dcfce7);
  border-color: #22c55e;
}

.reg-page .award-rank {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.reg-page .award-place {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.reg-page .award-amount {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
}

.reg-page .award-card.gold .award-amount {
  color: #d97706;
}
.reg-page .award-card.silver .award-amount {
  color: #475569;
}
.reg-page .award-card.bronze .award-amount {
  color: #ea580c;
}
.reg-page .award-card.special .award-amount {
  color: #16a34a;
}

.reg-page .award-desc {
  font-size: 0.8rem;
  color: #64748b;
}

/* ===== Grade (Medal) Items ===== */
.reg-page .grade-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.reg-page .grade-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.25rem;
  border-radius: 10px;
  border: 1px solid;
  font-size: 0.92rem;
}

.reg-page .grade-item .grade-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.reg-page .grade-item .grade-label {
  font-weight: 700;
  font-size: 1rem;
}

.reg-page .grade-item.gold-grade {
  background: #fefce8;
  border-color: #fbbf24;
  color: #92400e;
}

.reg-page .grade-item.silver-grade {
  background: #f8fafc;
  border-color: #94a3b8;
  color: #374151;
}

.reg-page .grade-item.bronze-grade {
  background: #fff7ed;
  border-color: #f97316;
  color: #7c2d12;
}

.reg-page .grade-item.participate-grade {
  background: #eff6ff;
  border-color: #93c5fd;
  color: #1e40af;
}

/* ===== Score Weight Table ===== */
.reg-page .score-weight {
  display: grid;
  grid-template-columns: 1fr auto;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #e2e8f0;
}

.reg-page .score-weight-row {
  display: contents;
}

.reg-page .score-weight-row > div {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid #f1f5f9;
}

.reg-page .score-weight-row.header > div {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  font-weight: 700;
  border-bottom: none;
  font-size: 0.9rem;
}

.reg-page .score-weight-row.total > div {
  background: #f8fafc;
  font-weight: 700;
  color: #1e293b;
}

.reg-page .score-weight-percent {
  background: #f8faff;
  text-align: center;
  font-weight: 700;
  color: #667eea;
  font-size: 1.1rem;
}

/* ===== Timeline ===== */
.reg-page .timeline {
  position: relative;
  padding: 0;
}

.reg-page .timeline::before {
  content: "";
  position: absolute;
  left: 1.75rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, #667eea, #764ba2);
  border-radius: 2px;
}

.reg-page .timeline-item {
  display: flex;
  gap: 1.5rem;
  padding: 0 0 1.75rem 0;
  position: relative;
}

.reg-page .timeline-dot {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
  z-index: 1;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.reg-page .timeline-content {
  flex: 1;
  background: white;
  border-radius: 12px;
  padding: 1.1rem 1.4rem;
  border: 1px solid #e2e8f0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.reg-page .timeline-date {
  font-weight: 700;
  color: #667eea;
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}

.reg-page .timeline-title {
  font-weight: 600;
  color: #1e293b;
  font-size: 0.95rem;
  margin: 0;
}

.reg-page .timeline-desc {
  color: #64748b;
  font-size: 0.85rem;
  margin-top: 0.25rem;
  line-height: 1.6;
}

/* ===== Download Buttons ===== */
.reg-page .download-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.reg-page .btn-download {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.5rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.25s ease;
  border: none;
  cursor: pointer;
  font-family: "Noto Sans Thai", sans-serif;
}

.reg-page .btn-download.primary {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.reg-page .btn-download.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
  color: white;
}

.reg-page .btn-download.danger {
  background: #fff0f0;
  color: #dc2626;
  border: 2px solid #fca5a5;
}

.reg-page .btn-download.danger:hover {
  background: #dc2626;
  color: white;
  transform: translateY(-2px);
}

.reg-page .btn-download.secondary {
  background: #f1f5f9;
  color: #475569;
  border: 2px solid #e2e8f0;
}

.reg-page .btn-download.secondary:hover {
  background: #e2e8f0;
  transform: translateY(-2px);
  color: #334155;
}

/* ===== Contact Grid ===== */
.reg-page .contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.reg-page .contact-item {
  background: #f8fafc;
  border-radius: 12px;
  padding: 1.1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border: 1px solid #e2e8f0;
  font-size: 0.9rem;
  color: #374151;
  text-decoration: none;
  transition: all 0.2s;
}

.reg-page .contact-item:hover {
  background: #f0f4ff;
  border-color: #667eea;
  color: #667eea;
  transform: translateY(-2px);
}

.reg-page .contact-item .contact-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.reg-page .contact-item .contact-icon.fb {
  background: #1877f2;
  color: white;
}
.reg-page .contact-item .contact-icon.ig {
  background: linear-gradient(
    135deg,
    #f09433,
    #e6683c,
    #dc2743,
    #cc2366,
    #bc1888
  );
  color: white;
}
.reg-page .contact-item .contact-icon.tt {
  background: #000;
  color: white;
}
.reg-page .contact-item .contact-icon.email {
  background: #6366f1;
  color: white;
}
.reg-page .contact-item .contact-icon.phone {
  background: #10b981;
  color: white;
}

/* ===== Topic Chips ===== */
.reg-page .topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.6rem;
  margin: 1rem 0;
}

.reg-page .topic-chip {
  background: #f0f4ff;
  border: 1px solid #c7d2fe;
  border-radius: 8px;
  padding: 0.5rem 0.85rem;
  font-size: 0.85rem;
  color: #4338ca;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.reg-page .topic-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  background: #667eea;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .reg-page .award-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  .reg-page .timeline::before {
    left: 1.25rem;
  }
  .reg-page .timeline-dot {
    width: 2.75rem;
    height: 2.75rem;
    font-size: 0.85rem;
  }
  .reg-page .content-card-body {
    padding: 1.25rem;
  }
  .reg-page .download-group {
    flex-direction: column;
  }
  .reg-page .btn-download {
    width: 100%;
    justify-content: center;
  }
  .reg-page .content-card-header {
    padding: 1.25rem;
  }
}

@media (max-width: 480px) {
  .reg-page .award-cards {
    grid-template-columns: 1fr;
  }
  .reg-page .topic-grid {
    grid-template-columns: 1fr 1fr;
  }
}