:root {
  /* --- Light Theme (default) --- */
  --bg-color: #F8FAFC;
  --card-bg: #FFFFFF;
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --border-color: #E2E8F0;
  --color-primary: #163B73;
  --color-primary-dark: #0F2A52;
  --color-accent: #28C840; /* Green for verified */
  --color-accent-dark: #1B9E30;
  --color-error: #D32F2F;
  --color-error-dark: #B71C1C;
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

[data-theme="dark"] {
  --bg-color: #0F172A;
  --card-bg: #1E293B;
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --border-color: #334155;
  --color-primary: #60A5FA;
  --color-primary-dark: #3B82F6;
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .verify-logo {
  filter: brightness(1.3) invert(0.85);
}

/* Accessibility: Focus Styles */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.verify-header {
  background-color: var(--card-bg);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
  text-align: center;
  position: relative;
  z-index: 10;
  border-bottom: 3px solid var(--color-primary);
}

.verify-header .verify-logo {
  height: 70px;
  width: auto;
  object-fit: contain;
  margin-bottom: 0.5rem;
}

.verify-header p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* Theme Toggle */
.header-actions {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
}

.theme-toggle {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--color-primary);
  width: 40px;
  height: 40px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.theme-toggle:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}


/* Main Content */
.verify-container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem 1rem;
}

.verify-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  width: 100%;
  max-width: 600px;
}

.verify-card {
  background: var(--card-bg);
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  overflow: hidden;
  position: relative;
  transition: transform 0.3s ease;
  animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
  transform: translateY(20px);
}

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

/* Status Banner */
.status-banner {
  padding: 2rem;
  text-align: center;
  color: white;
  position: relative;
}

.status-banner.valid {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
}

.status-banner.invalid {
  background: linear-gradient(135deg, var(--color-error), var(--color-error-dark));
}

.status-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  width: 100px;
  height: 100px;
  line-height: 100px;
  border-radius: 50%;
  backdrop-filter: blur(5px);
}

.status-title {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* Card Body */
.card-body {
  padding: 2.5rem;
}

.student-name {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 0.5rem;
  text-align: center;
}

.program-name {
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 2rem;
}

.details-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.detail-item {
  background: var(--bg-color);
  padding: 1rem 1.5rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.detail-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.detail-value {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

.modules-list {
  list-style: none;
}

.modules-list li {
  font-size: 0.95rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.modules-list li::before {
  content: '✓';
  color: var(--color-accent);
  font-weight: bold;
}

.modules-list li:last-child {
  border-bottom: none;
}

.dates-container {
  display: flex;
  gap: 1rem;
}

.dates-container .detail-item {
  flex: 1;
}

.invalid-message {
  text-align: center;
  padding: 3rem 2rem;
}

.invalid-message p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.btn-home {
  display: inline-block;
  background: var(--text-primary);
  color: var(--card-bg);
  padding: 0.8rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.btn-home:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* Loading State */
.loader {
  border: 5px solid var(--border-color);
  border-top: 5px solid var(--color-primary);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  animation: spin 1s linear infinite;
  margin: 4rem auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Footer */
.verify-footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
  background: var(--card-bg);
  border-top: 1px solid var(--border-color);
}

/* Company Information Card */
.company-card {
  background: var(--card-bg);
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
  padding: 2rem;
  border: 1px solid var(--border-color);
  animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
  transform: translateY(20px);
}

.company-card h3 {
  font-size: 1.2rem;
  color: var(--color-primary-dark);
  margin-bottom: 1rem;
}

.company-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.company-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: white;
}

/* Utilities replacing inline styles */
.icon-spacing {
  margin-right: 5px;
}

.verifying-text {
  text-align: center;
  padding-bottom: 2rem;
  color: var(--text-secondary);
}

.footer-slogan {
  margin-top: 5px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Responsive */
@media (max-width: 600px) {
  .card-body {
    padding: 1.5rem;
  }
  
  .dates-container {
    flex-direction: column;
  }
  
  .status-icon {
    font-size: 3rem;
    width: 80px;
    height: 80px;
    line-height: 80px;
  }
  
  .status-title {
    font-size: 1.5rem;
  }
}