/* ==========================================================================
   Certifications & Legal Registrations Stylesheet
   Kram Yog Sewa Sadan Trust
   ========================================================================== */

:root {
  --cert-primary: #1b5182;
  --cert-primary-dark: #113252;
  --cert-primary-light: #2b6cb0;
  --cert-accent: #13a34a;
  --cert-accent-hover: #0f853c;
  --cert-amber: #d97706;
  --cert-amber-bg: #fef3c7;
  --cert-navy-bg: #0f2438;
  --cert-gray-50: #f8fafc;
  --cert-gray-100: #f1f5f9;
  --cert-gray-200: #e2e8f0;
  --cert-gray-300: #cbd5e1;
  --cert-gray-600: #475569;
  --cert-gray-700: #334155;
  --cert-gray-800: #1e293b;
  --cert-radius: 12px;
  --cert-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  --cert-shadow-hover: 0 14px 30px rgba(27, 81, 130, 0.15);
  --cert-transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Hero Extensions --- */
.cert-hero {
  background: linear-gradient(135deg, #0e2a44 0%, #1b5182 60%, #134673 100%);
  color: #ffffff;
  padding: 60px 0 50px;
  position: relative;
  overflow: hidden;
}

.cert-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(19, 163, 74, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cert-hero .header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

.cert-badge-ribbon {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: #a7f3d0;
  margin-bottom: 18px;
}

.cert-badge-ribbon i {
  color: #34d399;
}

.cert-hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1.2;
  margin-bottom: 15px;
}

.cert-hero-subtitle {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: 820px;
  line-height: 1.65;
  margin-bottom: 30px;
}

/* Hero Quick Stats Bar */
.cert-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 15px;
  margin-top: 15px;
}

.cert-stat-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(6px);
  border-radius: 10px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.cert-stat-icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: #38bdf8;
  flex-shrink: 0;
}

.cert-stat-info h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0;
  line-height: 1.2;
}

.cert-stat-info p {
  font-size: 11.5px;
  color: rgba(255, 255, 255, 0.75);
  margin: 3px 0 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* --- Main Layout --- */
.cert-section {
  max-width: 1200px;
  margin: 40px auto 60px;
  padding: 0 20px;
}

/* --- Filter Bar --- */
.cert-filter-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 35px;
  border-bottom: 1px solid var(--cert-gray-200);
  padding-bottom: 18px;
}

.cert-filter-btn {
  background: var(--cert-gray-100);
  border: 1px solid var(--cert-gray-200);
  color: var(--cert-gray-700);
  padding: 9px 18px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--cert-transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.cert-filter-btn:hover {
  background: #e2e8f0;
  color: var(--cert-primary);
  border-color: #cbd5e1;
}

.cert-filter-btn.active {
  background: var(--cert-primary);
  color: #ffffff;
  border-color: var(--cert-primary);
  box-shadow: 0 4px 12px rgba(27, 81, 130, 0.25);
}

.cert-filter-btn .btn-count {
  background: rgba(0, 0, 0, 0.1);
  padding: 2px 7px;
  border-radius: 12px;
  font-size: 11px;
}

.cert-filter-btn.active .btn-count {
  background: rgba(255, 255, 255, 0.25);
}

/* --- Certificates Grid --- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

/* --- Certificate Card --- */
.cert-card {
  background: #ffffff;
  border: 1px solid var(--cert-gray-200);
  border-radius: var(--cert-radius);
  overflow: hidden;
  box-shadow: var(--cert-shadow);
  transition: var(--cert-transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

.cert-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--cert-shadow-hover);
  border-color: #cbd5e1;
}

/* Card Header Strip */
.cert-card-header {
  padding: 14px 18px;
  background: var(--cert-gray-50);
  border-bottom: 1px solid var(--cert-gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cert-authority-badge {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  padding: 4px 10px;
  border-radius: 20px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.badge-incometax {
  background: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #bfdbfe;
}

.badge-govt {
  background: #ecfdf5;
  color: #047857;
  border: 1px solid #a7f3d0;
}

.badge-mca {
  background: #fef3c7;
  color: #b45309;
  border: 1px solid #fde68a;
}

.badge-iso {
  background: #f5f3ff;
  color: #6d28d9;
  border: 1px solid #ddd6fe;
}

.badge-trust {
  background: #fff1f2;
  color: #be123c;
  border: 1px solid #fecdd3;
}

.cert-file-badge {
  font-size: 11px;
  font-weight: 700;
  color: var(--cert-gray-600);
  background: #ffffff;
  padding: 3px 8px;
  border-radius: 6px;
  border: 1px solid var(--cert-gray-200);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Card Preview Area */
.cert-preview-box {
  height: 200px;
  background: #f8fafc;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-bottom: 1px solid var(--cert-gray-200);
}

.cert-preview-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.4s ease;
}

.cert-preview-box:hover .cert-preview-img {
  transform: scale(1.05);
}

/* PDF Stylized Cover in Preview Box */
.cert-pdf-cover {
  width: 100%;
  height: 100%;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
  position: relative;
  text-align: center;
}

.cert-pdf-icon {
  width: 60px;
  height: 60px;
  background: #fee2e2;
  color: #dc2626;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 12px;
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.15);
  transition: transform 0.3s ease;
}

.cert-preview-box:hover .cert-pdf-icon {
  transform: translateY(-4px) scale(1.08);
}

.cert-pdf-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--cert-gray-800);
  max-width: 240px;
  line-height: 1.35;
}

.cert-pdf-size {
  font-size: 11px;
  color: var(--cert-gray-600);
  margin-top: 4px;
  font-weight: 500;
}

/* Overlay Hover Prompt */
.cert-hover-overlay {
  position: absolute;
  inset: 0;
  background: rgba(17, 50, 82, 0.75);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.cert-preview-box:hover .cert-hover-overlay {
  opacity: 1;
}

.cert-overlay-btn {
  background: #ffffff;
  color: var(--cert-primary);
  font-size: 12.5px;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 20px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

/* Card Body */
.cert-card-body {
  padding: 20px 20px 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.cert-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--cert-gray-800);
  line-height: 1.35;
  margin-bottom: 8px;
}

.cert-meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--cert-primary);
  background: #f0f7ff;
  border-radius: 4px;
  padding: 4px 8px;
  margin-bottom: 12px;
  align-self: flex-start;
}

.cert-meta-tag i {
  color: var(--cert-accent);
}

.cert-description {
  font-size: 13.5px;
  color: var(--cert-gray-600);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}

.cert-key-details {
  background: var(--cert-gray-50);
  border: 1px solid var(--cert-gray-200);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 12px;
  color: var(--cert-gray-700);
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.cert-detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cert-detail-label {
  font-weight: 600;
  color: var(--cert-gray-600);
}

.cert-detail-value {
  font-family: 'Consolas', 'Courier New', monospace;
  font-weight: 700;
  color: var(--cert-primary);
}

/* Card Actions */
.cert-card-actions {
  padding: 14px 20px 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  border-top: 1px solid var(--cert-gray-100);
}

.btn-cert-view {
  background: #f8fafc;
  color: var(--cert-primary);
  border: 1px solid var(--cert-gray-300);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  text-decoration: none;
  transition: var(--cert-transition);
}

.btn-cert-view:hover {
  background: #f0f7ff;
  border-color: var(--cert-primary);
  color: var(--cert-primary-dark);
}

.btn-cert-download {
  background: var(--cert-primary);
  color: #ffffff;
  border: 1px solid var(--cert-primary);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  text-decoration: none;
  transition: var(--cert-transition);
}

.btn-cert-download:hover {
  background: var(--cert-primary-dark);
  border-color: var(--cert-primary-dark);
  box-shadow: 0 4px 12px rgba(27, 81, 130, 0.3);
}

/* --- Trust & Transparency Verification Banner --- */
.cert-verify-banner {
  background: linear-gradient(135deg, #f0fdf4 0%, #e6f7ec 100%);
  border: 1px solid #bbf7d0;
  border-radius: var(--cert-radius);
  padding: 35px 30px;
  margin-top: 55px;
  box-shadow: var(--cert-shadow);
}

.cert-verify-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.cert-verify-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: var(--cert-accent);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.7rem;
  flex-shrink: 0;
}

.cert-verify-header h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: #14532d;
  margin: 0;
}

.cert-verify-header p {
  font-size: 14px;
  color: #166534;
  margin: 4px 0 0;
}

.cert-verify-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.cert-verify-item {
  background: #ffffff;
  border: 1px solid #dcfce7;
  border-radius: 8px;
  padding: 16px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

.cert-verify-item h4 {
  font-size: 13.5px;
  font-weight: 700;
  color: #166534;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.cert-verify-item p {
  font-size: 12.5px;
  color: var(--cert-gray-600);
  line-height: 1.5;
  margin: 0 0 10px;
}

.cert-verify-link {
  font-size: 12px;
  font-weight: 700;
  color: var(--cert-accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.cert-verify-link:hover {
  text-decoration: underline;
  color: var(--cert-accent-hover);
}

/* --- Modal / Lightbox Styles --- */
.cert-modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(6px);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.cert-modal.active {
  display: flex;
  opacity: 1;
}

.cert-modal-dialog {
  background: #ffffff;
  border-radius: var(--cert-radius);
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
  transform: scale(0.96);
  transition: transform 0.25s ease;
}

.cert-modal.active .cert-modal-dialog {
  transform: scale(1);
}

.cert-modal-header {
  padding: 18px 24px;
  background: var(--cert-gray-50);
  border-bottom: 1px solid var(--cert-gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cert-modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--cert-gray-800);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.cert-modal-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.cert-modal-close {
  background: transparent;
  border: none;
  font-size: 1.3rem;
  color: var(--cert-gray-600);
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.cert-modal-close:hover {
  background: var(--cert-gray-200);
  color: var(--cert-gray-800);
}

.cert-modal-body {
  padding: 20px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 480px;
  background: #f1f5f9;
}

.cert-modal-body img {
  max-width: 100%;
  max-height: 72vh;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.cert-modal-body iframe {
  width: 100%;
  height: 72vh;
  border: 1px solid var(--cert-gray-300);
  border-radius: 6px;
  background: #ffffff;
}

/* --- Responsive Media Queries --- */
@media (max-width: 991px) {
  .cert-hero-title {
    font-size: 2rem;
  }
  .cert-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
  }
}

@media (max-width: 640px) {
  .cert-hero {
    padding: 40px 0 35px;
  }
  .cert-hero-title {
    font-size: 1.65rem;
  }
  .cert-hero-subtitle {
    font-size: 0.95rem;
  }
  .cert-grid {
    grid-template-columns: 1fr;
  }
  .cert-filter-container {
    gap: 6px;
  }
  .cert-filter-btn {
    font-size: 12px;
    padding: 7px 12px;
  }
  .cert-card-actions {
    grid-template-columns: 1fr;
  }
  .cert-modal-dialog {
    max-height: 95vh;
  }
  .cert-modal-body {
    min-height: 340px;
    padding: 10px;
  }
}