:root {
  --primary: #1C437D;
  --primary-dark: #122c54;
  --primary-light: #2c5da3;
  --accent: #e6a817;
  --accent-hover: #cf930d;
  --bg-gradient-start: #0f2444;
  --bg-gradient-end: #1c437d;
  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --border: #e2e8f0;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --error: #dc2626;
  --error-bg: #fef2f2;
  --error-border: #fecaca;
  --success: #16a34a;
  --success-bg: #f0fdf4;
  --success-border: #bbf7d0;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.15), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --radius: 12px;
  --transition: all 0.25s ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: #f1f5f9;
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

/* Header Styles */
.header-hero {
  background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
  color: #ffffff;
  padding: 2.5rem 1rem 3.5rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.header-hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(230, 168, 23, 0.15) 0%, rgba(255, 255, 255, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
}

.header-container {
  max-width: 1050px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1.75rem;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.school-logo {
  width: 95px;
  height: 95px;
  object-fit: contain;
  border-radius: 50%;
  background: #ffffff;
  padding: 6px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  border: 3px solid var(--accent);
  transition: var(--transition);
  flex-shrink: 0;
}

.school-logo:hover {
  transform: scale(1.05);
}

.header-text {
  text-align: left;
}

.school-name {
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.15;
  color: #ffffff;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.school-location {
  font-size: 1.15rem;
  font-weight: 500;
  color: #cbd5e1;
  margin-top: 0.25rem;
  letter-spacing: 0.5px;
}

.portal-tagline {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  background: rgba(230, 168, 23, 0.2);
  color: #fcd34d;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  border: 1px solid rgba(230, 168, 23, 0.4);
}

/* Main Container */
.main-wrapper {
  max-width: 1000px;
  width: 94%;
  margin: -1.75rem auto 3rem;
  flex: 1;
  position: relative;
  z-index: 2;
}

/* Card Styles */
.portal-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}

.card-header {
  background: linear-gradient(to right, #f8fafc, #edf2f7);
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.card-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.card-title svg {
  color: var(--primary);
}

.card-body {
  padding: 2rem 1.75rem;
}

/* Alerts */
.alert {
  padding: 1rem 1.25rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: fadeIn 0.3s ease-out;
}

.alert-error {
  background-color: var(--error-bg);
  color: var(--error);
  border: 1px solid var(--error-border);
}

.alert-success {
  background-color: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success-border);
}

/* Search Form Grid */
.search-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  justify-content: space-between;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: normal;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 1rem;
  color: var(--text-muted);
  pointer-events: none;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.75rem;
  font-size: 1rem;
  font-family: inherit;
  border: 2px solid #cbd5e1;
  border-radius: 8px;
  background-color: var(--surface);
  color: var(--text-main);
  transition: var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 4px rgba(28, 67, 125, 0.15);
}

.form-input::placeholder {
  color: #94a3b8;
}

/* Action Area */
.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  margin-top: 0.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(28, 67, 125, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  box-shadow: 0 6px 14px rgba(28, 67, 125, 0.4);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: #e2e8f0;
  color: var(--text-main);
}

.btn-secondary:hover {
  background: #cbd5e1;
}

.btn-success {
  background: #16a34a;
  color: #ffffff;
}

.btn-success:hover {
  background: #15803d;
}

/* Certificate Preview Container */
.certificate-view-card {
  margin-top: 2rem;
  border-top: 2px dashed var(--border);
  padding-top: 2rem;
  animation: slideUp 0.4s ease-out;
}

.preview-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.preview-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toolbar-buttons {
  display: flex;
  gap: 0.75rem;
}

.image-frame {
  background: #334155;
  border-radius: 10px;
  padding: 1rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
  overflow: auto;
  max-height: 850px;
}

.tc-image {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  transition: var(--transition);
  display: inline-block;
  background-color: #ffffff;
}

/* Instructions / Help Box */
.info-section {
  margin-top: 2rem;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.info-section h4 {
  color: var(--primary);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.info-section ul {
  padding-left: 1.25rem;
  line-height: 1.7;
}

/* Footer */
.footer {
  margin-top: auto;
  background: #0f2444;
  color: #94a3b8;
  text-align: center;
  padding: 1.5rem;
  font-size: 0.88rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer a {
  color: #cbd5e1;
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Print Styling */
@media print {
  body {
    background: #ffffff;
    color: #000000;
  }
  .header-hero,
  .search-form,
  .form-actions,
  .preview-toolbar,
  .info-section,
  .footer,
  .card-header,
  .alert {
    display: none !important;
  }
  .main-wrapper {
    margin: 0;
    width: 100%;
    max-width: 100%;
  }
  .portal-card {
    box-shadow: none;
    border: none;
  }
  .card-body {
    padding: 0;
  }
  .certificate-view-card {
    margin: 0;
    padding: 0;
    border-top: none;
  }
  .image-frame {
    background: transparent;
    padding: 0;
    box-shadow: none;
    max-height: none;
  }
  .tc-image {
    max-width: 100%;
    width: 100%;
    box-shadow: none;
  }
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .header-hero {
    padding: 1.75rem 1rem 2.5rem;
  }
  .header-container {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }
  .header-text {
    text-align: center;
  }
  .school-name {
    font-size: 1.6rem;
  }
  .school-location {
    font-size: 1rem;
  }
  .school-logo {
    width: 75px;
    height: 75px;
  }
  .card-body {
    padding: 1.5rem 1.2rem;
  }
  .form-actions {
    flex-direction: column;
  }
  .btn {
    width: 100%;
  }
  .preview-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .toolbar-buttons {
    flex-direction: column;
  }
}