/* ============================================================
   Portfolio Details — Extended Sections
   Inherits site design: DM Sans, --primary-900 #044bab,
   --secondary-900 #fa731b, card radius 16px
   ============================================================ */

/* ── Shared wrappers ── */
.pd-sections {
  font-family: "DM Sans", sans-serif;
}

.pd-section {
  padding: 64px 24px;
  background: #fff;
}

.pd-section-alt {
  background: linear-gradient(135deg, #e8f0fe 0%, #f0f4ff 100%);
}

.pd-container {
  max-width: 1100px;
  margin: 0 auto;
}

/* ── Section heading — matches site h2 style ── */
.pd-section-label {
  display: inline-block;
  background: rgba(4, 75, 171, 0.08);
  color: #044bab;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.pd-section-heading {
  font-size: clamp(24px, 3.5vw, 34px);
  font-weight: 700;
  color: #044bab;
  margin: 0 0 6px;
  line-height: 1.2;
}

.pd-section-sub {
  color: #515152;
  font-size: 15px;
  margin: 0 0 36px;
  line-height: 1.6;
}

/* Divider accent */
.pd-heading-accent {
  width: 48px;
  height: 4px;
  background: #fa731b;
  border-radius: 4px;
  margin: 10px 0 32px;
}

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.55s ease,
    transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-d1 {
  transition-delay: 0.08s;
}
.reveal-d2 {
  transition-delay: 0.16s;
}
.reveal-d3 {
  transition-delay: 0.24s;
}
.reveal-d4 {
  transition-delay: 0.32s;
}
.reveal-d5 {
  transition-delay: 0.4s;
}
.reveal-d6 {
  transition-delay: 0.48s;
}

/* ── Hidden sections (shown by JS when data exists) ── */
.pd-dynamic-section {
  display: none;
}

/* ══════════════════════════════════════════════
   SECTION 1 — Metadata Grid
   ══════════════════════════════════════════════ */
.pd-meta-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (min-width: 640px) {
  .pd-meta-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.pd-meta-cell {
  background: #fff;
  border-radius: 16px;
  padding: 24px 18px;
  text-align: center;
  border: 1px solid rgba(4, 75, 171, 0.08);
  box-shadow: 0 4px 20px rgba(4, 75, 171, 0.08);
  transition:
    transform 0.25s,
    box-shadow 0.25s;
}
.pd-meta-cell:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(4, 75, 171, 0.14);
}
.pd-meta-icon {
  font-size: 26px;
  margin-bottom: 10px;
  display: block;
}
.pd-meta-label {
  display: block;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #515152;
  font-weight: 700;
  margin-bottom: 5px;
  opacity: 0.7;
}
.pd-meta-value {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: #044bab;
}

/* ══════════════════════════════════════════════
   SECTION 2 — About the Project
   ══════════════════════════════════════════════ */
.pd-about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
}
@media (min-width: 860px) {
  .pd-about-layout {
    grid-template-columns: 1fr 280px;
  }
}

.pd-about-text p {
  line-height: 1.8;
  color: #515152;
  margin: 0 0 14px;
  font-size: 15px;
}

.pd-stats-card {
  background: linear-gradient(145deg, #044bab 0%, #2d69ba 100%);
  border-radius: 16px;
  padding: 28px 22px;
  color: #fff;
  box-shadow: 0 8px 32px rgba(4, 75, 171, 0.22);
}
.pd-stats-card-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.65;
  margin-bottom: 20px;
  display: block;
  font-weight: 700;
}
.pd-stat-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  padding: 14px 0;
}
.pd-stat-item:first-child {
  padding-top: 0;
}
.pd-stat-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.pd-stat-item .s-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.55;
  display: block;
  margin-bottom: 3px;
}
.pd-stat-item .s-value {
  font-size: 17px;
  font-weight: 700;
  display: block;
}

/* ══════════════════════════════════════════════
   SECTION 3 — Key Features
   ══════════════════════════════════════════════ */
.pd-features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
@media (min-width: 600px) {
  .pd-features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 900px) {
  .pd-features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pd-feature-card {
  background: linear-gradient(135deg, #e8f0fe 0%, #f0f4ff 100%);
  border-radius: 16px;
  padding: 26px 22px;
  border: 1px solid rgba(4, 75, 171, 0.08);
  box-shadow: 0 4px 20px rgba(4, 75, 171, 0.06);
  transition:
    transform 0.25s,
    box-shadow 0.25s,
    border-color 0.25s;
}
.pd-feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(4, 75, 171, 0.14);
  border-color: rgba(4, 75, 171, 0.2);
}
.pd-feature-icon {
  font-size: 28px;
  margin-bottom: 12px;
  display: block;
}
.pd-feature-card h4 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: #044bab;
  line-height: 1.3;
}
.pd-feature-card p {
  margin: 0;
  font-size: 13px;
  color: #515152;
  line-height: 1.65;
}

/* ══════════════════════════════════════════════
   SECTION 4 — Tech Stack
   ══════════════════════════════════════════════ */
.pd-tech-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
@media (min-width: 600px) {
  .pd-tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 960px) {
  .pd-tech-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.pd-tech-col {
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(4, 75, 171, 0.08);
  box-shadow: 0 4px 20px rgba(4, 75, 171, 0.07);
}
.pd-tech-col-header {
  padding: 12px 18px;
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #fff;
}
.pd-tech-col-header.c-frontend {
  background: #044bab;
}
.pd-tech-col-header.c-backend {
  background: #0f766e;
}
.pd-tech-col-header.c-database {
  background: #7c3aed;
}
.pd-tech-col-header.c-tools {
  background: #b45309;
}

.pd-tech-tag-list {
  padding: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.pd-tech-tag {
  background: rgba(4, 75, 171, 0.07);
  color: #044bab;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
}

/* ══════════════════════════════════════════════
   SECTION 5 — Challenges & Solutions
   ══════════════════════════════════════════════ */
.pd-cs-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.pd-cs-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 680px) {
  .pd-cs-pair {
    grid-template-columns: 1fr 1fr;
  }
}

.pd-cs-challenge,
.pd-cs-solution {
  border-radius: 14px;
  padding: 22px 20px;
}
.pd-cs-challenge {
  background: #fff5f5;
  border: 1px solid #fecaca;
}
.pd-cs-solution {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
}
.pd-cs-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.pd-cs-challenge .pd-cs-badge {
  background: #fee2e2;
  color: #b91c1c;
}
.pd-cs-solution .pd-cs-badge {
  background: #dcfce7;
  color: #15803d;
}
.pd-cs-challenge p,
.pd-cs-solution p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: #515152;
}

/* ══════════════════════════════════════════════
   SECTION 6 — Screenshots Gallery
   ══════════════════════════════════════════════ */
.pd-gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
@media (min-width: 700px) {
  .pd-gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pd-gallery-item {
  cursor: pointer;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(4, 75, 171, 0.08);
  box-shadow: 0 4px 20px rgba(4, 75, 171, 0.07);
  transition:
    transform 0.25s,
    box-shadow 0.25s;
  background: #f0f4ff;
}
.pd-gallery-item:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 12px 36px rgba(4, 75, 171, 0.16);
}
.pd-gallery-item img {
  width: 100%;
  height: 170px;
  object-fit: cover;
  display: block;
}
.pd-gallery-caption {
  background: #fff;
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 600;
  color: #044bab;
}

/* Lightbox */
.pd-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(4, 15, 50, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.pd-lightbox.open {
  opacity: 1;
  pointer-events: all;
}
.pd-lightbox img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: 14px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}
.pd-lightbox-close {
  position: absolute;
  top: 20px;
  right: 26px;
  color: #fff;
  font-size: 34px;
  cursor: pointer;
  background: none;
  border: none;
  line-height: 1;
  opacity: 0.75;
  transition: opacity 0.2s;
  font-family: "DM Sans", sans-serif;
}
.pd-lightbox-close:hover {
  opacity: 1;
}
.pd-lightbox-caption {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(4, 75, 171, 0.7);
  color: #fff;
  padding: 7px 20px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  font-family: "DM Sans", sans-serif;
  white-space: nowrap;
}

/* ══════════════════════════════════════════════
   SECTION 7 — Results & Impact
   ══════════════════════════════════════════════ */
.pd-results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
@media (min-width: 760px) {
  .pd-results-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.pd-result-card {
  background: #fff;
  border-radius: 16px;
  padding: 28px 20px;
  text-align: center;
  border: 1px solid rgba(4, 75, 171, 0.08);
  box-shadow: 0 4px 20px rgba(4, 75, 171, 0.08);
  transition:
    transform 0.25s,
    box-shadow 0.25s;
}
.pd-result-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 14px 40px rgba(4, 75, 171, 0.14);
}
.pd-result-card .r-icon {
  font-size: 34px;
  display: block;
  margin-bottom: 10px;
}
.pd-result-card .r-number {
  display: block;
  font-size: clamp(22px, 4vw, 34px);
  font-weight: 800;
  color: #044bab;
  line-height: 1;
  margin-bottom: 7px;
}
.pd-result-card .r-label {
  display: block;
  font-size: 13px;
  color: #515152;
  font-weight: 600;
  line-height: 1.4;
}

/* ══════════════════════════════════════════════
   SECTION 8 — Project Timeline
   ══════════════════════════════════════════════ */
.pd-timeline-wrap {
  max-width: 740px;
  margin: 0 auto;
  position: relative;
}
.pd-timeline-wrap::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(4, 75, 171, 0.15);
  transform: translateX(-50%);
}
@media (max-width: 640px) {
  .pd-timeline-wrap::before {
    left: 22px;
  }
}

.pd-tl-step {
  display: grid;
  grid-template-columns: 1fr 50px 1fr;
  gap: 0;
  align-items: center;
  margin-bottom: 28px;
}
@media (max-width: 640px) {
  .pd-tl-step {
    grid-template-columns: 50px 1fr;
  }
}

.pd-tl-left,
.pd-tl-right {
  padding: 0 20px;
}

.pd-tl-step.left-active .pd-tl-left {
  display: block;
}
.pd-tl-step.left-active .pd-tl-right {
  visibility: hidden;
}
.pd-tl-step.right-active .pd-tl-right {
  display: block;
}
.pd-tl-step.right-active .pd-tl-left {
  visibility: hidden;
}

@media (max-width: 640px) {
  .pd-tl-step.left-active .pd-tl-left,
  .pd-tl-step.right-active .pd-tl-left {
    display: none;
  }
  .pd-tl-step.right-active .pd-tl-right {
    order: 2;
    visibility: visible;
  }
  .pd-tl-step.left-active .pd-tl-right {
    order: 2;
    display: block;
    visibility: visible;
  }
}

.pd-tl-dot {
  display: flex;
  justify-content: center;
  z-index: 1;
}
.pd-tl-dot-inner {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #044bab;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 15px;
  box-shadow: 0 0 0 6px rgba(4, 75, 171, 0.1);
}

.pd-tl-card {
  background: #fff;
  border-radius: 14px;
  padding: 18px 20px;
  border: 1px solid rgba(4, 75, 171, 0.08);
  box-shadow: 0 4px 18px rgba(4, 75, 171, 0.07);
}
.pd-tl-card h4 {
  margin: 0 0 5px;
  font-size: 14px;
  font-weight: 700;
  color: #044bab;
}
.pd-tl-card p {
  margin: 0;
  font-size: 12px;
  color: #515152;
  line-height: 1.6;
}

/* ══════════════════════════════════════════════
   SECTION 9 — CTA / Related
   ══════════════════════════════════════════════ */
.pd-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-bottom: 52px;
}

.pd-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  font-family: "DM Sans", sans-serif;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}
.pd-cta-btn:hover {
  transform: translateY(-3px);
}
.pd-cta-primary {
  background: #044bab;
  color: #fff;
  box-shadow: 0 4px 20px rgba(4, 75, 171, 0.25);
}
.pd-cta-primary:hover {
  box-shadow: 0 8px 30px rgba(4, 75, 171, 0.35);
}
.pd-cta-outline {
  background: #fff;
  color: #044bab;
  border: 2px solid rgba(4, 75, 171, 0.2);
}
.pd-cta-outline:hover {
  border-color: #044bab;
}

.pd-related-eyebrow {
  text-align: center;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #515152;
  font-weight: 700;
  margin-bottom: 18px;
  opacity: 0.7;
}
.pd-related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
@media (min-width: 600px) {
  .pd-related-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pd-related-card {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(4, 75, 171, 0.08);
  box-shadow: 0 4px 20px rgba(4, 75, 171, 0.07);
  background: linear-gradient(135deg, #e8f0fe 0%, #f0f4ff 100%);
  text-decoration: none;
  transition:
    transform 0.25s,
    box-shadow 0.25s;
  display: block;
}
.pd-related-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(4, 75, 171, 0.16);
}
.pd-related-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  display: block;
}
.pd-related-info {
  padding: 14px 16px;
}
.pd-related-info h5 {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 700;
  color: #044bab;
}
.pd-related-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.pd-related-tags span {
  background: rgba(4, 75, 171, 0.08);
  color: #044bab;
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
}

/* Empty state — shown if a section has no data */
.pd-empty {
  display: none !important;
}