/* ============================================
   Eco-Vault Styles
   ============================================ */

.vault-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-16);
}

/* ── Certificate Cards ── */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-16);
}

.cert-card {
  background: var(--color-glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-glass-border);
  box-shadow: var(--shadow-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

.cert-card:hover {
  box-shadow: var(--shadow-xl);
  border-color: var(--color-forest-200);
  transform: translateY(-3px);
}

.cert-card__thumb {
  height: 180px;
  background: var(--color-bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--color-border-light);
  position: relative;
  overflow: hidden;
}

.cert-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: blur(2px);
  opacity: 0.7;
}

.cert-card__thumb-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  background: var(--color-glass-bg-overlay);
}

.cert-card__thumb-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-inverse);
}

.cert-card__thumb-icon svg {
  width: 24px;
  height: 24px;
}

.cert-card__body {
  padding: var(--space-5);
}

.cert-card__name {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--color-text-heading);
  margin-bottom: var(--space-1);
}

.cert-card__issuer {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

.cert-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.cert-card__validity {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.cert-card__status {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-forest-700);
  background: var(--color-forest-50);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

.cert-card__status::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-success);
  border-radius: 50%;
}

/* ── Traceability Timeline ── */
.trace-timeline {
  position: relative;
  padding: var(--space-8) 0;
}

.trace-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 40px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-forest-200), var(--color-border), var(--color-forest-200));
}

.trace-step {
  position: relative;
  padding-left: 100px;
  margin-bottom: var(--space-10);
  display: flex;
  align-items: flex-start;
  gap: var(--space-5);
}

.trace-step__number {
  position: absolute;
  left: 20px;
  width: 42px;
  height: 42px;
  background: var(--color-surface);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--color-primary);
  z-index: 1;
}

.trace-step__content {
  background: var(--color-glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-glass-border);
  box-shadow: var(--shadow-card);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  flex: 1;
}

.trace-step__title {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--color-text-heading);
  margin-bottom: var(--space-2);
}

.trace-step__desc {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  line-height: var(--lh-relaxed);
}

/* ── QR Section ── */
.qr-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.qr-mockup {
  background: var(--color-glass-bg-subtle);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-glass-border);
  box-shadow: var(--shadow-card);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
}

.qr-mockup__image {
  width: 200px;
  height: 200px;
  margin: 0 auto var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
}

.qr-info__steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.qr-step {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.qr-step__num {
  width: 36px;
  height: 36px;
  background: var(--color-forest-50);
  border: 1px solid var(--color-forest-200);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--color-primary);
  flex-shrink: 0;
}

.qr-step__text {
  padding-top: var(--space-2);
}

.qr-step__title {
  font-weight: var(--fw-semibold);
  color: var(--color-text-heading);
  font-size: var(--fs-base);
  margin-bottom: var(--space-1);
}

.qr-step__desc {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}