/*
 * Digital Product Passport (DPP) Template Styles
 * Based on TWNS design - Pure CSS with CSS Variables
 * Mobile-first responsive design
 */

/* ========================================
   CSS Variables (Theming)
   ======================================== */
:root {
  /* Colors */
  --dpp-color-primary: #0f172a;
  --dpp-color-secondary: #64748b;
  --dpp-color-muted: #94a3b8;
  --dpp-color-accent: #22c55e;
  --dpp-color-accent-alt: #8b5cf6;
  --dpp-color-background: #f8fafc;
  --dpp-color-surface: #ffffff;
  --dpp-color-border: #e2e8f0;
  --dpp-color-danger: #ef4444;
  --dpp-color-warning: #f59e0b;

  /* Spacing Scale */
  --dpp-space-1: 0.25rem;
  --dpp-space-2: 0.5rem;
  --dpp-space-3: 0.75rem;
  --dpp-space-4: 1rem;
  --dpp-space-5: 1.25rem;
  --dpp-space-6: 1.5rem;
  --dpp-space-8: 2rem;
  --dpp-space-10: 2.5rem;
  --dpp-space-12: 3rem;

  /* Typography */
  --dpp-font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --dpp-font-size-xs: 0.75rem;
  --dpp-font-size-sm: 0.875rem;
  --dpp-font-size-base: 1rem;
  --dpp-font-size-lg: 1.125rem;
  --dpp-font-size-xl: 1.25rem;
  --dpp-font-size-2xl: 1.5rem;
  --dpp-line-height: 1.5;
  --dpp-line-height-tight: 1.25;

  /* Border Radius */
  --dpp-radius-sm: 0.375rem;
  --dpp-radius-md: 0.5rem;
  --dpp-radius-lg: 0.75rem;
  --dpp-radius-xl: 1rem;
  --dpp-radius-2xl: 1.5rem;
  --dpp-radius-full: 9999px;

  /* Shadows */
  --dpp-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --dpp-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --dpp-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --dpp-transition: 150ms ease-in-out;
}

/* ========================================
   Base Reset & Typography
   ======================================== */
.dpp-page {
  margin: 0;
  padding: 0;
  font-family: var(--dpp-font-sans);
  font-size: var(--dpp-font-size-base);
  line-height: var(--dpp-line-height);
  color: var(--dpp-color-primary);
  background: linear-gradient(135deg, var(--dpp-color-background) 0%, #f1f5f9 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.dpp-page *,
.dpp-page *::before,
.dpp-page *::after {
  box-sizing: border-box;
}

/* ========================================
   Layout Container
   ======================================== */
.dpp-container {
  max-width: 100%;
  margin: 0 auto;
  padding: var(--dpp-space-4);
}

@media (min-width: 640px) {
  .dpp-container {
    max-width: 600px;
    padding: var(--dpp-space-6);
  }
}

@media (min-width: 1024px) {
  .dpp-container {
    max-width: 800px;
  }
}

/* ========================================
   Header / Brand Logo
   ======================================== */
.dpp-brand {
  display: flex;
  justify-content: center;
  margin-bottom: var(--dpp-space-4);
}

.dpp-brand-logo {
  height: 2rem;
  width: auto;
}

@media (min-width: 640px) {
  .dpp-brand-logo {
    height: 3rem;
  }
}

/* ========================================
   Product Image Card
   ======================================== */
.dpp-product-image-card {
  background: var(--dpp-color-surface);
  border-radius: var(--dpp-radius-2xl);
  box-shadow: var(--dpp-shadow-lg);
  overflow: hidden;
  margin-bottom: var(--dpp-space-4);
}

.dpp-product-image {
  width: 100%;
  height: auto;
  display: block;
}

/* ========================================
   Product Header
   ======================================== */
.dpp-product-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--dpp-space-4);
  margin-bottom: var(--dpp-space-4);
  background: var(--dpp-color-surface);
  border-radius: var(--dpp-radius-xl);
  padding: var(--dpp-space-4);
  box-shadow: var(--dpp-shadow-lg);
}

.dpp-product-info {
  flex: 1;
}

.dpp-product-title {
  font-size: var(--dpp-font-size-xl);
  font-weight: 600;
  color: var(--dpp-color-primary);
  margin: 0 0 var(--dpp-space-2) 0;
  line-height: var(--dpp-line-height-tight);
}

@media (min-width: 640px) {
  .dpp-product-title {
    font-size: var(--dpp-font-size-2xl);
  }
}

.dpp-product-subtitle {
  font-size: var(--dpp-font-size-sm);
  color: var(--dpp-color-secondary);
  margin: 0;
}

.dpp-product-id {
  font-size: var(--dpp-font-size-xs);
  color: var(--dpp-color-muted);
  margin-top: var(--dpp-space-2);
}

/* Share Button */
.dpp-share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--dpp-color-surface);
  border: 1px solid var(--dpp-color-border);
  border-radius: var(--dpp-radius-lg);
  cursor: pointer;
  transition: all var(--dpp-transition);
  flex-shrink: 0;
}

.dpp-share-btn:hover {
  background: var(--dpp-color-background);
  border-color: var(--dpp-color-secondary);
}

.dpp-share-btn svg {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--dpp-color-secondary);
}

/* ========================================
   Verification Badge
   ======================================== */
.dpp-verification-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--dpp-space-2);
  padding: var(--dpp-space-2) var(--dpp-space-3);
  background: #dcfce7;
  color: #166534;
  border-radius: var(--dpp-radius-full);
  font-size: var(--dpp-font-size-sm);
  font-weight: 500;
  margin-bottom: var(--dpp-space-4);
}

.dpp-verification-badge svg {
  width: 1rem;
  height: 1rem;
}

/* ========================================
   Tabs
   ======================================== */
.dpp-tabs-container {
  background: var(--dpp-color-surface);
  border-radius: var(--dpp-radius-2xl);
  box-shadow: var(--dpp-shadow-lg);
  overflow: hidden;
}

.dpp-tabs {
  display: flex;
  border-bottom: 1px solid var(--dpp-color-border);
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.dpp-tabs::-webkit-scrollbar {
  display: none;
}

.dpp-tab {
  flex: 1;
  min-width: max-content;
  padding: var(--dpp-space-3) var(--dpp-space-4);
  font-size: var(--dpp-font-size-sm);
  font-weight: 500;
  color: var(--dpp-color-secondary);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--dpp-transition);
  white-space: nowrap;
  text-align: center;
}

.dpp-tab:hover {
  color: var(--dpp-color-primary);
  background: var(--dpp-color-background);
}

.dpp-tab.active {
  color: var(--dpp-color-primary);
  border-bottom-color: var(--dpp-color-primary);
}

@media (min-width: 640px) {
  .dpp-tab {
    padding: var(--dpp-space-4) var(--dpp-space-6);
    font-size: var(--dpp-font-size-base);
  }
}

/* Tab Content */
.dpp-tab-content {
  display: none;
  padding: var(--dpp-space-4);
}

.dpp-tab-content.active {
  display: block;
}

@media (min-width: 640px) {
  .dpp-tab-content {
    padding: var(--dpp-space-6);
  }
}

/* ========================================
   Section Headers
   ======================================== */
.dpp-section-title {
  font-size: var(--dpp-font-size-base);
  font-weight: 600;
  color: var(--dpp-color-primary);
  margin: 0 0 var(--dpp-space-3) 0;
}

@media (min-width: 640px) {
  .dpp-section-title {
    font-size: var(--dpp-font-size-lg);
    margin-bottom: var(--dpp-space-4);
  }
}

.dpp-section-divider {
  border: none;
  border-top: 1px solid var(--dpp-color-border);
  margin: var(--dpp-space-4) 0;
}

@media (min-width: 640px) {
  .dpp-section-divider {
    margin: var(--dpp-space-6) 0;
  }
}

/* ========================================
   Cards
   ======================================== */
.dpp-card {
  background: var(--dpp-color-surface);
  border-radius: var(--dpp-radius-xl);
  box-shadow: var(--dpp-shadow-md);
  padding: var(--dpp-space-4);
}

.dpp-card-flat {
  background: var(--dpp-color-background);
  border-radius: var(--dpp-radius-lg);
  padding: var(--dpp-space-3);
}

@media (min-width: 640px) {
  .dpp-card-flat {
    padding: var(--dpp-space-4);
  }
}

/* ========================================
   Grid Layouts
   ======================================== */
.dpp-grid {
  display: grid;
  gap: var(--dpp-space-3);
}

.dpp-grid-2 {
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .dpp-grid {
    gap: var(--dpp-space-4);
  }

  .dpp-grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========================================
   Materials Tab - Progress Bars
   ======================================== */
.dpp-material-item {
  margin-bottom: var(--dpp-space-4);
}

.dpp-material-item:last-child {
  margin-bottom: 0;
}

.dpp-material-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--dpp-space-2);
}

.dpp-material-name {
  display: flex;
  align-items: center;
  gap: var(--dpp-space-2);
  font-size: var(--dpp-font-size-sm);
  color: var(--dpp-color-primary);
}

@media (min-width: 640px) {
  .dpp-material-name {
    font-size: var(--dpp-font-size-base);
  }
}

.dpp-material-icon {
  width: 1rem;
  height: 1rem;
}

.dpp-material-icon.green {
  color: var(--dpp-color-accent);
}

.dpp-material-icon.blue {
  color: #3b82f6;
}

.dpp-material-percentage {
  font-size: var(--dpp-font-size-sm);
  color: var(--dpp-color-secondary);
}

.dpp-progress {
  height: 8px;
  background: var(--dpp-color-border);
  border-radius: var(--dpp-radius-full);
  overflow: hidden;
}

.dpp-progress-fill {
  height: 100%;
  background: var(--dpp-color-accent);
  border-radius: var(--dpp-radius-full);
  transition: width 0.3s ease;
}

.dpp-progress-fill.blue {
  background: #3b82f6;
}

/* Certification Badge */
.dpp-cert-badge {
  width: 0.75rem;
  height: 0.75rem;
  color: #f59e0b;
}

@media (min-width: 640px) {
  .dpp-cert-badge {
    width: 1rem;
    height: 1rem;
  }
}

/* Certifications Grid */
.dpp-cert-item {
  text-align: left;
}

.dpp-cert-name {
  font-size: var(--dpp-font-size-sm);
  font-weight: 500;
  color: var(--dpp-color-primary);
  margin-bottom: var(--dpp-space-1);
}

@media (min-width: 640px) {
  .dpp-cert-name {
    font-size: var(--dpp-font-size-base);
  }
}

.dpp-cert-desc {
  font-size: var(--dpp-font-size-xs);
  color: var(--dpp-color-secondary);
}

@media (min-width: 640px) {
  .dpp-cert-desc {
    font-size: var(--dpp-font-size-sm);
  }
}

/* ========================================
   Alerts / Info Boxes
   ======================================== */
.dpp-alert {
  display: flex;
  gap: var(--dpp-space-3);
  padding: var(--dpp-space-3);
  border-radius: var(--dpp-radius-lg);
  font-size: var(--dpp-font-size-sm);
}

@media (min-width: 640px) {
  .dpp-alert {
    padding: var(--dpp-space-4);
  }
}

.dpp-alert-icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.dpp-alert-success {
  background: #dcfce7;
  border: 1px solid #bbf7d0;
}

.dpp-alert-success .dpp-alert-icon {
  color: var(--dpp-color-accent);
}

.dpp-alert-success .dpp-alert-title {
  color: #166534;
}

.dpp-alert-success .dpp-alert-text {
  color: #15803d;
}

.dpp-alert-purple {
  background: #f3e8ff;
  border: 1px solid #e9d5ff;
}

.dpp-alert-purple .dpp-alert-icon {
  color: var(--dpp-color-accent-alt);
}

.dpp-alert-purple .dpp-alert-title {
  color: #581c87;
}

.dpp-alert-purple .dpp-alert-text {
  color: #7c3aed;
}

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

.dpp-alert-info .dpp-alert-icon {
  color: var(--dpp-color-secondary);
}

.dpp-alert-info .dpp-alert-text {
  color: var(--dpp-color-secondary);
}

.dpp-alert-title {
  font-weight: 500;
  margin-bottom: var(--dpp-space-1);
}

.dpp-alert-text {
  font-size: var(--dpp-font-size-xs);
}

@media (min-width: 640px) {
  .dpp-alert-text {
    font-size: var(--dpp-font-size-sm);
  }
}

/* ========================================
   Supply Chain Timeline
   ======================================== */
.dpp-timeline {
  position: relative;
  padding-left: var(--dpp-space-8);
}

.dpp-timeline::before {
  content: '';
  position: absolute;
  left: 0.75rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--dpp-color-border);
}

.dpp-timeline-item {
  position: relative;
  padding-bottom: var(--dpp-space-4);
}

@media (min-width: 640px) {
  .dpp-timeline-item {
    padding-bottom: var(--dpp-space-6);
  }
}

.dpp-timeline-item:last-child {
  padding-bottom: 0;
}

.dpp-timeline-icon {
  position: absolute;
  left: calc(-1 * var(--dpp-space-8) + 0.25rem);
  width: 2rem;
  height: 2rem;
  background: var(--dpp-color-surface);
  border: 2px solid var(--dpp-color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

@media (min-width: 640px) {
  .dpp-timeline-icon {
    width: 2.5rem;
    height: 2.5rem;
    left: calc(-1 * var(--dpp-space-8) - 0.25rem);
  }
}

.dpp-timeline-icon svg {
  width: 1rem;
  height: 1rem;
  color: var(--dpp-color-secondary);
}

@media (min-width: 640px) {
  .dpp-timeline-icon svg {
    width: 1.25rem;
    height: 1.25rem;
  }
}

.dpp-timeline-content {
  background: var(--dpp-color-background);
  border-radius: var(--dpp-radius-lg);
  padding: var(--dpp-space-3);
}

@media (min-width: 640px) {
  .dpp-timeline-content {
    padding: var(--dpp-space-4);
  }
}

.dpp-timeline-title {
  font-size: var(--dpp-font-size-sm);
  font-weight: 500;
  color: var(--dpp-color-primary);
  margin: 0 0 var(--dpp-space-1) 0;
}

@media (min-width: 640px) {
  .dpp-timeline-title {
    font-size: var(--dpp-font-size-base);
  }
}

.dpp-timeline-location {
  display: flex;
  align-items: center;
  gap: var(--dpp-space-1);
  font-size: var(--dpp-font-size-xs);
  color: var(--dpp-color-secondary);
  margin-bottom: var(--dpp-space-2);
}

@media (min-width: 640px) {
  .dpp-timeline-location {
    font-size: var(--dpp-font-size-sm);
  }
}

.dpp-timeline-location svg {
  width: 0.75rem;
  height: 0.75rem;
}

.dpp-timeline-desc {
  font-size: var(--dpp-font-size-xs);
  color: var(--dpp-color-secondary);
  margin-bottom: var(--dpp-space-2);
}

@media (min-width: 640px) {
  .dpp-timeline-desc {
    font-size: var(--dpp-font-size-sm);
  }
}

.dpp-timeline-date {
  font-size: var(--dpp-font-size-xs);
  color: var(--dpp-color-muted);
}

/* ========================================
   Care Tab - Instruction Cards
   ======================================== */
.dpp-care-card {
  display: flex;
  flex-direction: column;
}

.dpp-care-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--dpp-color-secondary);
  margin-bottom: var(--dpp-space-2);
}

@media (min-width: 640px) {
  .dpp-care-icon {
    width: 1.5rem;
    height: 1.5rem;
    margin-bottom: var(--dpp-space-3);
  }
}

.dpp-care-title {
  font-size: var(--dpp-font-size-sm);
  font-weight: 500;
  color: var(--dpp-color-primary);
  margin-bottom: var(--dpp-space-1);
}

@media (min-width: 640px) {
  .dpp-care-title {
    font-size: var(--dpp-font-size-base);
  }
}

.dpp-care-desc {
  font-size: var(--dpp-font-size-xs);
  color: var(--dpp-color-secondary);
}

@media (min-width: 640px) {
  .dpp-care-desc {
    font-size: var(--dpp-font-size-sm);
  }
}

/* Sustainability Tips */
.dpp-tip-item {
  display: flex;
  gap: var(--dpp-space-2);
  padding: var(--dpp-space-2);
  background: var(--dpp-color-background);
  border-radius: var(--dpp-radius-lg);
  margin-bottom: var(--dpp-space-2);
}

@media (min-width: 640px) {
  .dpp-tip-item {
    gap: var(--dpp-space-3);
    padding: var(--dpp-space-3);
    margin-bottom: var(--dpp-space-3);
  }
}

.dpp-tip-item:last-child {
  margin-bottom: 0;
}

.dpp-tip-dot {
  width: 0.5rem;
  height: 0.5rem;
  background: var(--dpp-color-accent);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 0.5rem;
}

.dpp-tip-title {
  font-size: var(--dpp-font-size-sm);
  font-weight: 500;
  color: var(--dpp-color-primary);
}

@media (min-width: 640px) {
  .dpp-tip-title {
    font-size: var(--dpp-font-size-base);
  }
}

.dpp-tip-desc {
  font-size: var(--dpp-font-size-xs);
  color: var(--dpp-color-secondary);
}

@media (min-width: 640px) {
  .dpp-tip-desc {
    font-size: var(--dpp-font-size-sm);
  }
}

/* ========================================
   Circularity Tab - Option Cards
   ======================================== */
.dpp-circularity-card {
  display: flex;
  gap: var(--dpp-space-3);
  padding: var(--dpp-space-3);
  background: var(--dpp-color-surface);
  border: 1px solid var(--dpp-color-border);
  border-radius: var(--dpp-radius-xl);
  transition: box-shadow var(--dpp-transition);
  margin-bottom: var(--dpp-space-3);
}

@media (min-width: 640px) {
  .dpp-circularity-card {
    gap: var(--dpp-space-4);
    padding: var(--dpp-space-4);
    margin-bottom: var(--dpp-space-4);
  }
}

.dpp-circularity-card:last-child {
  margin-bottom: 0;
}

.dpp-circularity-card:hover {
  box-shadow: var(--dpp-shadow-md);
}

.dpp-circularity-icon-wrap {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--dpp-color-background);
  border-radius: var(--dpp-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 640px) {
  .dpp-circularity-icon-wrap {
    width: 3rem;
    height: 3rem;
  }
}

.dpp-circularity-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--dpp-color-secondary);
}

@media (min-width: 640px) {
  .dpp-circularity-icon {
    width: 1.5rem;
    height: 1.5rem;
  }
}

.dpp-circularity-content {
  flex: 1;
  min-width: 0;
}

.dpp-circularity-title {
  font-size: var(--dpp-font-size-sm);
  font-weight: 500;
  color: var(--dpp-color-primary);
  margin-bottom: var(--dpp-space-1);
}

@media (min-width: 640px) {
  .dpp-circularity-title {
    font-size: var(--dpp-font-size-base);
  }
}

.dpp-circularity-desc {
  font-size: var(--dpp-font-size-xs);
  color: var(--dpp-color-secondary);
  margin-bottom: var(--dpp-space-2);
}

@media (min-width: 640px) {
  .dpp-circularity-desc {
    font-size: var(--dpp-font-size-sm);
    margin-bottom: var(--dpp-space-3);
  }
}

.dpp-circularity-footer {
  display: flex;
  flex-direction: column;
  gap: var(--dpp-space-2);
}

@media (min-width: 640px) {
  .dpp-circularity-footer {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.dpp-circularity-benefit {
  font-size: var(--dpp-font-size-xs);
  color: #15803d;
}

@media (min-width: 640px) {
  .dpp-circularity-benefit {
    font-size: var(--dpp-font-size-sm);
  }
}

/* Product Composition for Recycling */
.dpp-composition-section {
  margin-bottom: var(--dpp-space-3);
}

.dpp-composition-section:last-child {
  margin-bottom: 0;
}

.dpp-composition-title {
  font-size: var(--dpp-font-size-sm);
  font-weight: 500;
  color: var(--dpp-color-primary);
  margin-bottom: var(--dpp-space-1);
}

@media (min-width: 640px) {
  .dpp-composition-title {
    font-size: var(--dpp-font-size-base);
  }
}

.dpp-composition-text {
  font-size: var(--dpp-font-size-xs);
  color: var(--dpp-color-secondary);
}

@media (min-width: 640px) {
  .dpp-composition-text {
    font-size: var(--dpp-font-size-sm);
  }
}

/* Subscribe Card */
.dpp-subscribe-card {
  display: flex;
  gap: var(--dpp-space-2);
  padding: var(--dpp-space-3);
  background: var(--dpp-color-primary);
  color: var(--dpp-color-surface);
  border-radius: var(--dpp-radius-xl);
}

@media (min-width: 640px) {
  .dpp-subscribe-card {
    gap: var(--dpp-space-3);
    padding: var(--dpp-space-4);
  }
}

.dpp-subscribe-icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

@media (min-width: 640px) {
  .dpp-subscribe-icon {
    width: 1.25rem;
    height: 1.25rem;
  }
}

.dpp-subscribe-title {
  font-size: var(--dpp-font-size-sm);
  font-weight: 500;
  margin-bottom: var(--dpp-space-1);
}

@media (min-width: 640px) {
  .dpp-subscribe-title {
    font-size: var(--dpp-font-size-base);
    margin-bottom: var(--dpp-space-2);
  }
}

.dpp-subscribe-text {
  font-size: var(--dpp-font-size-xs);
  color: #cbd5e1;
  margin-bottom: var(--dpp-space-3);
}

@media (min-width: 640px) {
  .dpp-subscribe-text {
    font-size: var(--dpp-font-size-sm);
    margin-bottom: var(--dpp-space-4);
  }
}

/* ========================================
   Buttons
   ======================================== */
.dpp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--dpp-space-2) var(--dpp-space-3);
  font-size: var(--dpp-font-size-xs);
  font-weight: 500;
  border-radius: var(--dpp-radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--dpp-transition);
  text-decoration: none;
}

@media (min-width: 640px) {
  .dpp-btn {
    font-size: var(--dpp-font-size-sm);
  }
}

.dpp-btn-outline {
  background: transparent;
  border: 1px solid var(--dpp-color-border);
  color: var(--dpp-color-primary);
}

.dpp-btn-outline:hover {
  background: var(--dpp-color-background);
  border-color: var(--dpp-color-secondary);
}

.dpp-btn-secondary {
  background: var(--dpp-color-surface);
  color: var(--dpp-color-primary);
}

.dpp-btn-secondary:hover {
  background: #f1f5f9;
}

.dpp-btn-full {
  width: 100%;
}

@media (min-width: 640px) {
  .dpp-btn-full {
    width: auto;
  }
}

/* ========================================
   Share Modal
   ======================================== */
.dpp-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
}

.dpp-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.dpp-modal {
  background: var(--dpp-color-surface);
  border-radius: var(--dpp-radius-2xl);
  padding: var(--dpp-space-6);
  max-width: 400px;
  width: calc(100% - 2rem);
  margin: var(--dpp-space-4);
  transform: scale(0.95);
  transition: transform 0.2s ease;
}

.dpp-modal-overlay.active .dpp-modal {
  transform: scale(1);
}

.dpp-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--dpp-space-4);
}

.dpp-modal-title {
  font-size: var(--dpp-font-size-lg);
  font-weight: 600;
  color: var(--dpp-color-primary);
  margin: 0;
}

.dpp-modal-close {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--dpp-color-secondary);
  border-radius: var(--dpp-radius-md);
  transition: background var(--dpp-transition);
}

.dpp-modal-close:hover {
  background: var(--dpp-color-background);
}

.dpp-modal-close svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* Social Share Buttons */
.dpp-share-buttons {
  display: flex;
  gap: var(--dpp-space-3);
  justify-content: center;
  margin-bottom: var(--dpp-space-4);
}

.dpp-share-social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  transition: transform var(--dpp-transition);
  text-decoration: none;
}

.dpp-share-social:hover {
  transform: scale(1.1);
}

.dpp-share-social svg {
  width: 1.25rem;
  height: 1.25rem;
  color: white;
}

.dpp-share-facebook {
  background: #1877f2;
}

.dpp-share-pinterest {
  background: #e60023;
}

.dpp-share-linkedin {
  background: #0a66c2;
}

.dpp-share-twitter {
  background: #000000;
}

.dpp-share-instagram {
  background: linear-gradient(
          45deg,
          #f58529,
          #dd2a7b,
          #8134af,
          #515bd4
  );
}

.dpp-share-instagram svg {
  width: 1.8rem;     /* bigger icon */
  height: 1.8rem;
  stroke: #ffffff;  /* white line color */
  fill: none;       /* line-only logo */
  stroke-width: 1.8;
}

/* Copy Link */
.dpp-copy-link {
  display: flex;
  gap: var(--dpp-space-2);
}

.dpp-copy-input {
  flex: 1;
  padding: var(--dpp-space-3);
  border: 1px solid var(--dpp-color-border);
  border-radius: var(--dpp-radius-md);
  font-size: var(--dpp-font-size-sm);
  color: var(--dpp-color-secondary);
  background: var(--dpp-color-background);
  min-width: 0;
}

.dpp-copy-btn {
  padding: var(--dpp-space-3) var(--dpp-space-4);
  background: var(--dpp-color-primary);
  color: var(--dpp-color-surface);
  border: none;
  border-radius: var(--dpp-radius-md);
  font-size: var(--dpp-font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--dpp-transition);
}

.dpp-copy-btn:hover {
  background: #1e293b;
}

/* ========================================
   Footer
   ======================================== */
.dpp-footer {
  text-align: center;
  padding: var(--dpp-space-6) var(--dpp-space-4);
  color: var(--dpp-color-secondary);
  font-size: var(--dpp-font-size-sm);
}

.dpp-footer a {
  color: var(--dpp-color-secondary);
  text-decoration: none;
}

.dpp-footer a:hover {
  color: var(--dpp-color-primary);
}

/* ========================================
   Utility Classes
   ======================================== */
.dpp-hidden {
  display: none !important;
}

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

.dpp-space-y > * + * {
  margin-top: var(--dpp-space-4);
}

.dpp-space-y-sm > * + * {
  margin-top: var(--dpp-space-3);
}

@media (min-width: 640px) {
  .dpp-space-y > * + * {
    margin-top: var(--dpp-space-6);
  }
}

/* ========================================
   Image Carousel
   ======================================== */
.dpp-carousel-container {
  position: relative;
  width: 100%;
  margin-bottom: var(--dpp-space-4);
}

/*.dpp-carousel {*/
/*  position: relative;*/
/*  overflow: hidden;*/
/*  border-radius: var(--dpp-radius-xl);*/
/*  background: var(--dpp-color-surface);*/
/*}*/

.dpp-carousel-track {
  display: flex;
  transition: transform 0.3s ease-out;
  justify-content: center;
}

.dpp-carousel-slide {
  /*min-width: 100%;*/
  display: none;
  position: relative;
  overflow: hidden;
  border-radius: var(--dpp-radius-xl);
}

.dpp-carousel-slide.active {
  display: block;
}

.dpp-carousel-link {
  display: block;
}

.dpp-carousel-image {
  display: block;
  width: 100%;
  object-fit: contain;
  height: 350px;
}

@media (min-width: 640px) {
  .dpp-carousel-image {
    height: 450px;
  }
}

/* Navigation Arrows */
.dpp-carousel-prev,
.dpp-carousel-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.9);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--dpp-shadow-md);
  z-index: 10;
  transition: background 0.2s, opacity 0.2s;
}

@media (min-width: 640px) {
  .dpp-carousel-prev,
  .dpp-carousel-next {
    width: 44px;
    height: 44px;
  }
}

.dpp-carousel-prev:hover,
.dpp-carousel-next:hover {
  background: white;
}

.dpp-carousel-prev {
  left: var(--dpp-space-2);
}

.dpp-carousel-next {
  right: var(--dpp-space-2);
}

.dpp-carousel-prev svg,
.dpp-carousel-next svg {
  width: 20px;
  height: 20px;
  color: var(--dpp-color-primary);
}

@media (min-width: 640px) {
  .dpp-carousel-prev svg,
  .dpp-carousel-next svg {
    width: 24px;
    height: 24px;
  }
}

/* Navigation Dots */
.dpp-carousel-dots {
  display: flex;
  justify-content: center;
  gap: var(--dpp-space-2);
  padding: var(--dpp-space-3) 0;
}

.dpp-carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: var(--dpp-color-border);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  padding: 0;
}

.dpp-carousel-dot.active,
.dpp-carousel-dot:hover {
  background: var(--dpp-color-primary);
}

.dpp-carousel-dot.active {
  transform: scale(1.25);
}

/* ========================================
   Phase Media (Timeline)
   ======================================== */
.dpp-timeline-media {
  margin-top: var(--dpp-space-3);
  border-radius: var(--dpp-radius-lg);
  overflow: hidden;
}

.dpp-phase-carousel {
  position: relative;
  background: var(--dpp-color-background);
  border-radius: var(--dpp-radius-lg);
}

.dpp-phase-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  max-height: 180px;
  border-radius: var(--dpp-radius-md);
}

@media (min-width: 640px) {
  .dpp-phase-image {
    max-height: 240px;
  }
}

/* Smaller arrows for phase carousels */
.dpp-carousel-prev-sm,
.dpp-carousel-next-sm {
  width: 28px;
  height: 28px;
}

@media (min-width: 640px) {
  .dpp-carousel-prev-sm,
  .dpp-carousel-next-sm {
    width: 32px;
    height: 32px;
  }
}

.dpp-carousel-prev-sm svg,
.dpp-carousel-next-sm svg {
  width: 14px;
  height: 14px;
}

@media (min-width: 640px) {
  .dpp-carousel-prev-sm svg,
  .dpp-carousel-next-sm svg {
    width: 16px;
    height: 16px;
  }
}

/* Video Wrapper (16:9 aspect ratio) */
.dpp-phase-video {
  margin-top: var(--dpp-space-3);
}

.dpp-video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  border-radius: var(--dpp-radius-lg);
  background: var(--dpp-color-primary);
}

.dpp-video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* =====================================================
   Direction 5b — Stack + Focus (Material Composition)
   ===================================================== */

/* Accent palette — four slots cycling per material index */
.dpp-seg-accent-0 { --seg-accent: #22c55e; --seg-soft: #dcfce7; --seg-ink: #166534; }
.dpp-seg-accent-1 { --seg-accent: #3b82f6; --seg-soft: #dbeafe; --seg-ink: #1e40af; }
.dpp-seg-accent-2 { --seg-accent: #8b5cf6; --seg-soft: #ede9fe; --seg-ink: #5b21b6; }
.dpp-seg-accent-3 { --seg-accent: #f59e0b; --seg-soft: #fef3c7; --seg-ink: #92400e; }

.dpp-stack-intro {
  font-size: var(--dpp-font-size-sm);
  color: var(--dpp-color-secondary);
  margin: 0 0 0.875rem;
}

/* Stack bar */
.dpp-stack-bar {
  display: flex;
  align-items: stretch;
  gap: 4px;
  padding: 4px;
  background: var(--dpp-color-background);
  border: 1px solid var(--dpp-color-border);
  border-radius: var(--dpp-radius-xl);
  margin: 0 0 1rem;
  min-height: 76px;
}

.dpp-stack-seg {
  position: relative;
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  text-align: left;
  background: var(--dpp-color-surface);
  border: 1px solid var(--dpp-color-border);
  border-radius: var(--dpp-radius-lg);
  padding: 0;
  cursor: pointer;
  overflow: hidden;
  font-family: var(--dpp-font-sans);
  min-width: 0;
  transition: background 160ms, border-color 160ms, opacity 160ms, box-shadow 160ms;
}

.dpp-stack-seg:hover {
  border-color: var(--seg-accent);
  box-shadow: 0 4px 14px -8px var(--seg-accent);
}

.dpp-stack-seg.is-focused {
  border-color: var(--seg-accent);
  background: var(--seg-soft);
  box-shadow: 0 4px 14px -8px var(--seg-accent);
}

.dpp-stack-seg.is-dimmed { opacity: 0.45; }
.dpp-stack-seg.is-dimmed:hover { opacity: 1; }

.dpp-stack-seg-cap {
  display: block;
  height: 6px;
  background: var(--seg-accent);
}

.dpp-stack-seg-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 10px 10px;
  min-width: 0;
}

.dpp-stack-seg-level {
  font-size: 0.625rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--seg-ink);
  opacity: 0.85;
}

.dpp-stack-seg-name {
  font-size: var(--dpp-font-size-sm);
  font-weight: 600;
  color: var(--dpp-color-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Focus panel */
.dpp-stack-focus {
  background: var(--dpp-color-surface);
  border: 1px solid var(--dpp-color-border);
  border-radius: var(--dpp-radius-xl);
  padding: 1rem 1.125rem 1.125rem;
}

.dpp-stack-focus.is-overview {
  background: var(--dpp-color-background);
  border-style: dashed;
  text-align: center;
  padding: 1.5rem 1.125rem;
}

.dpp-stack-focus-eyebrow {
  font-size: 0.625rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--seg-ink, var(--dpp-color-muted));
  margin-bottom: 0.25rem;
}

.dpp-stack-focus-title {
  margin: 0 0 0.125rem;
  font-size: var(--dpp-font-size-lg);
  font-weight: 600;
  color: var(--dpp-color-primary);
}

.dpp-stack-focus.is-overview .dpp-stack-focus-title {
  font-size: var(--dpp-font-size-base);
  font-weight: 500;
}

.dpp-stack-focus-hint {
  margin: 0.375rem 0 0;
  font-size: 0.8125rem;
  color: var(--dpp-color-secondary);
}

.dpp-stack-focus-head {
  margin-bottom: 0.75rem;
}

/* Breadcrumb trail */
.dpp-stack-trail {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  flex-wrap: wrap;
  font-size: var(--dpp-font-size-xs);
  color: var(--dpp-color-secondary);
  margin-bottom: 0.75rem;
}

.dpp-stack-trail-back {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.5rem;
  border-radius: var(--dpp-radius-md);
  border: 1px solid var(--dpp-color-border);
  background: var(--dpp-color-surface);
  color: var(--dpp-color-primary);
  font-size: var(--dpp-font-size-xs);
  font-weight: 600;
  font-family: var(--dpp-font-sans);
  cursor: pointer;
  transition: background 140ms;
}

.dpp-stack-trail-back:hover { background: var(--dpp-color-background); }

.dpp-stack-trail-sep { color: var(--dpp-color-muted); }

.dpp-stack-trail-current {
  color: var(--dpp-color-primary);
  font-weight: 600;
}

/* Children list */
.dpp-stack-children-eyebrow {
  margin: 0.875rem 0 0.5rem;
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--dpp-color-muted);
  font-weight: 600;
}

.dpp-stack-children {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.375rem;
}

.dpp-stack-card {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--dpp-color-border);
  border-radius: var(--dpp-radius-lg);
  background: var(--dpp-color-background);
  overflow: hidden;
  min-height: 52px;
}

.dpp-stack-card-rail {
  width: 4px;
  background: var(--seg-accent);
  flex-shrink: 0;
}

.dpp-stack-card-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 10px 9px;
}

.dpp-stack-level-tag {
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--seg-accent);
  line-height: 1.2;
}

.dpp-stack-card-name {
  font-size: var(--dpp-font-size-sm);
  font-weight: 600;
  color: var(--dpp-color-primary);
  line-height: 1.3;
}

.dpp-stack-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  align-items: center;
  font-size: var(--dpp-font-size-xs);
  color: var(--dpp-color-secondary);
  margin-top: 1px;
}

/* Trail link button (breadcrumb navigable ancestor) */
.dpp-stack-trail-link {
  border: none;
  background: transparent;
  color: var(--dpp-color-secondary);
  font-family: var(--dpp-font-sans);
  font-size: var(--dpp-font-size-xs);
  cursor: pointer;
  padding: 0;
}
.dpp-stack-trail-link:hover { color: var(--dpp-color-primary); text-decoration: underline; }

/* Clickable (non-leaf) child card */
button.dpp-stack-card {
  cursor: pointer;
  width: 100%;
  padding: 0;
  font-family: var(--dpp-font-sans);
  text-align: left;
  transition: border-color 140ms, background 140ms, box-shadow 140ms;
}
button.dpp-stack-card:hover {
  border-color: var(--seg-accent);
  background: var(--dpp-color-surface);
  box-shadow: 0 4px 14px -8px var(--seg-accent);
}

/* Arrow on drillable cards */
.dpp-stack-card-go {
  align-self: center;
  padding-right: 0.625rem;
  color: var(--seg-accent);
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}

/* Certifications inside focus panel */
.dpp-stack-certs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: 0.25rem;
}

.dpp-stack-cert {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  max-width: 5rem;
}

.dpp-stack-cert-logo {
  width: 3.5rem;
  height: 3.5rem;
  object-fit: contain;
  border-radius: var(--dpp-radius-md);
  background: var(--dpp-color-background);
  padding: 0.25rem;
  border: 1px solid var(--dpp-color-border);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.dpp-stack-cert-logo:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.dpp-stack-cert-link {
  font-size: var(--dpp-font-size-xs);
  color: var(--dpp-color-accent);
  text-decoration: underline;
  text-align: center;
}

/* Recyclability chip inside focus panel */
.dpp-recycle-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: var(--dpp-font-size-xs);
  color: var(--dpp-color-secondary);
  background: var(--dpp-color-background);
  border: 1px solid var(--dpp-color-border);
  border-radius: var(--dpp-radius-full);
  padding: 0.1875rem 0.625rem;
  margin-top: 0.375rem;
}