:root {
  --primary-navy: #002B49;
  --primary-gold: #C5A059;
  --gold-accent: #E5C378;
  --bg-gradient: linear-gradient(135deg, #0b1d2e 0%, #002B49 50%, #0a3a5c 100%);
  --card-bg: rgba(255, 255, 255, 0.96);
  --text-dark: #1e293b;
  --text-muted: #64748b;
  --success-green: #059669;
  --success-bg: #ecfdf5;
  --danger-red: #dc2626;
  --danger-bg: #fef2f2;
  --border-color: #e2e8f0;
  --font-km: 'Kantumruy Pro', 'Battambang', sans-serif;
  --font-en: 'Inter', system-ui, sans-serif;
  --font-display: 'Cinzel', serif;
}

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

body {
  min-height: 100vh;
  background: var(--bg-gradient);
  font-family: var(--font-km);
  color: var(--text-dark);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 30px 15px;
}

.app-container {
  width: 100%;
  max-width: 820px;
}

.app-header {
  text-align: center;
  color: #ffffff;
  margin-bottom: 25px;
}

.header-content {
  position: relative;
  padding: 20px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.nmc-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--primary-gold);
  color: var(--primary-navy);
  font-weight: 800;
  font-family: var(--font-display);
  font-size: 20px;
  box-shadow: 0 0 20px rgba(197, 160, 89, 0.4);
  margin-bottom: 12px;
}

.khmer-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--gold-accent);
  margin-bottom: 4px;
}

.english-title {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 2px;
  color: #ffffff;
  margin-bottom: 6px;
}

.subtitle {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
}

.lang-switch {
  position: absolute;
  top: 20px;
  right: 20px;
}

.lang-toggle-btn {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #ffffff;
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.lang-toggle-btn:hover {
  background: var(--primary-gold);
  color: var(--primary-navy);
}

.search-card, .result-card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 30px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
  margin-bottom: 25px;
}

.search-card h3 {
  font-size: 18px;
  color: var(--primary-navy);
  margin-bottom: 8px;
}

.instruction {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.5;
}

.search-form {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.input-wrapper {
  position: relative;
  flex: 1;
  min-width: 260px;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--text-muted);
}

.input-wrapper input {
  width: 100%;
  padding: 14px 14px 14px 44px;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  font-size: 16px;
  outline: none;
  font-family: monospace, var(--font-en);
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: border-color 0.2s;
}

.input-wrapper input:focus {
  border-color: var(--primary-navy);
}

.btn-primary {
  background: var(--primary-navy);
  color: var(--gold-accent);
  border: 1px solid var(--primary-gold);
  padding: 14px 28px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s, background-color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 150px;
}

.btn-primary:hover {
  background: #001f35;
  transform: translateY(-1px);
}

.app-footer {
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
  font-size: 12px;
  line-height: 1.6;
  padding: 10px;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Certificate Result Details Card */
.cert-status-banner {
  padding: 14px 20px;
  border-radius: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 25px;
}

.status-valid {
  background: var(--success-bg);
  color: var(--success-green);
  border: 1px solid #a7f3d0;
}

.status-revoked {
  background: var(--danger-bg);
  color: var(--danger-red);
  border: 1px solid #fecaca;
}

.cert-grid {
  display: grid;
  grid-template-columns: 1fr 140px;
  gap: 20px;
  margin-bottom: 20px;
}

@media (max-width: 600px) {
  .cert-grid {
    grid-template-columns: 1fr;
  }
}

.cert-photo {
  width: 130px;
  height: 160px;
  border-radius: 8px;
  object-fit: cover;
  border: 2px solid var(--primary-gold);
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.data-row {
  display: flex;
  flex-direction: column;
  margin-bottom: 12px;
}

.data-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-val {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
}

/* --- Verification result states -------------------------------------------- */
.status-expired {
  background: var(--warning-bg, #FFFBEB);
  color: var(--warning-amber, #B45309);
  border: 1px solid #FDE68A;
}

.status-superseded {
  background: #EFF6FF;
  color: #1D4ED8;
  border: 1px solid #BFDBFE;
}

.status-banner {
  padding: 14px 18px;
  border-radius: 10px;
  font-weight: 700;
  margin-bottom: 18px;
}

.status-note {
  color: #475569;
  font-size: 14px;
  line-height: 1.5;
  margin: -8px 0 18px 0;
}

.cert-details { display: flex; flex-direction: column; gap: 8px; }

.cert-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 6px 0;
  border-bottom: 1px dashed #E2E8F0;
}

.cert-label { color: #64748B; font-size: 13px; }
.cert-value { color: #002B49; font-size: 14px; text-align: right; word-break: break-word; }

.cert-photo {
  width: 120px;
  height: 150px;
  object-fit: cover;
  border-radius: 6px;
  border: 2px solid var(--primary-gold, #C5A059);
}

@media (max-width: 600px) {
  .cert-photo-wrap { display: flex; justify-content: center; margin-top: 16px; }
}