/**
 * Portfolio Showcase Stylesheet
 * Brand: Chad Sia Media (Location Page Light Theme Architecture)
 * Primary #4968f8, Accent #10b981, Light Background #f5f5f7
 */

:root {
  --cs-port-bg: #f5f5f7;
  --cs-port-card-bg: #ffffff;
  --cs-port-card-hover: #ffffff;
  --cs-port-border: #e5e7eb;
  --cs-port-border-hover: rgba(73, 104, 248, 0.45);
  --cs-port-primary: #4968f8;
  --cs-port-primary-hover: #3553eb;
  --cs-port-primary-glow: rgba(73, 104, 248, 0.25);
  --cs-port-accent: #10b981;
  --cs-port-text: #4b5563;
  --cs-port-text-dark: #111827;
  --cs-port-text-muted: #6b7280;
  --cs-port-radius-sm: 6px;
  --cs-port-radius-md: 8px;
  --cs-port-radius-lg: 14px;
  --cs-port-radius-pill: 8px;
  --cs-port-transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Page Reset & Scope */
.cs-portfolio-wrapper {
  background-color: var(--cs-port-bg);
  color: var(--cs-port-text);
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  min-height: 100vh;
  padding-bottom: 100px;
  overflow-x: hidden;
}

.cs-portfolio-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* =========================================================================
   1. HERO SECTION
   ========================================================================= */
.cs-portfolio-hero {
  position: relative;
  padding: 80px 0 50px;
  text-align: center;
  overflow: hidden;
}

.cs-hero-glow-blob {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 650px;
  height: 380px;
  background: radial-gradient(circle, rgba(73, 104, 248, 0.12) 0%, rgba(245, 245, 247, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

.cs-hero-content {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
}

.cs-portfolio-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent !important;
  border: none !important;
  color: var(--cs-port-primary);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: normal;
  text-transform: none !important;
  padding: 0 !important;
  border-radius: 0 !important;
  margin-bottom: 14px;
  line-height: 1.4;
}

.cs-portfolio-title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(34px, 5.5vw, 54px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--cs-port-text-dark);
  margin: 0 0 20px;
}

.cs-portfolio-title .cs-gradient-text {
  color: var(--cs-port-primary);
  font-weight: 800;
}

.cs-portfolio-subtitle {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--cs-port-text);
  line-height: 1.65;
  max-width: 720px;
  margin: 0 auto 36px;
}

/* Impact Metrics Bar */
.cs-portfolio-stats {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 32px;
  background: #ffffff;
  border: 1px solid var(--cs-port-border);
  padding: 16px 36px;
  border-radius: var(--cs-port-radius-lg);
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
}

.cs-stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cs-stat-number {
  font-family: 'Outfit', sans-serif;
  font-size: 26px;
  font-weight: 800;
  color: var(--cs-port-text-dark);
  letter-spacing: -0.02em;
}

.cs-stat-number.cs-accent-metric {
  color: var(--cs-port-accent);
}

.cs-stat-number.cs-primary-metric {
  color: var(--cs-port-primary);
}

.cs-stat-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--cs-port-text-muted);
  letter-spacing: 0.02em;
  margin-top: 2px;
}

.cs-stat-divider {
  width: 1px;
  height: 32px;
  background: var(--cs-port-border);
}

/* =========================================================================
   2. CATEGORY FILTER TABS
   ========================================================================= */
.cs-filter-section {
  padding: 30px 0 45px;
  text-align: center;
}

.cs-filter-pills {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  background: #ffffff;
  border: 1px solid var(--cs-port-border);
  padding: 6px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.cs-filter-btn {
  background: transparent;
  border: none;
  color: var(--cs-port-text);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--cs-port-transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  outline: none;
}

.cs-filter-btn:hover {
  color: var(--cs-port-primary);
  background: #f8fafc;
}

.cs-filter-btn.active {
  background: var(--cs-port-primary);
  color: #ffffff;
  box-shadow: 0 4px 14px var(--cs-port-primary-glow);
}

.cs-filter-btn .cs-filter-count {
  font-size: 11px;
  background: #f1f5f9;
  color: #4b5563;
  padding: 2px 7px;
  border-radius: 4px;
}

.cs-filter-btn.active .cs-filter-count {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

/* =========================================================================
   3. PORTFOLIO GRID & CARDS
   ========================================================================= */
.cs-portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.cs-portfolio-card {
  background: #ffffff;
  border: 1px solid var(--cs-port-border);
  border-radius: var(--cs-port-radius-lg);
  overflow: hidden;
  transition: var(--cs-port-transition);
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
}

.cs-portfolio-card:hover {
  transform: translateY(-6px);
  border-color: var(--cs-port-border-hover);
  box-shadow: 0 16px 36px -4px rgba(73, 104, 248, 0.16);
}

.cs-portfolio-card.is-hidden {
  display: none !important;
}

/* Card Media Header */
.cs-card-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #f1f5f9;
}

.cs-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  display: block;
}

.cs-portfolio-card:hover .cs-card-media img {
  transform: scale(1.05);
}

.cs-card-media-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(17, 24, 39, 0) 40%, rgba(17, 24, 39, 0.4) 100%);
  pointer-events: none;
}

/* Media Floating Badges */
.cs-media-badges {
  display: none !important;
}

.cs-client-badge {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: rgba(255, 255, 255, 0.92);
  color: #111827;
  padding: 4px 10px;
  border-radius: var(--cs-port-radius-sm);
  border: 1px solid rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(8px);
}

.cs-metric-chip {
  font-size: 11px;
  font-weight: 700;
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid rgba(16, 185, 129, 0.35);
  padding: 4px 10px;
  border-radius: var(--cs-port-radius-sm);
  backdrop-filter: blur(8px);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

/* Quick Expand Overlay Button on Thumbnail */
.cs-media-expand-btn {
  position: absolute;
  bottom: 14px;
  right: 14px;
  background: rgba(17, 24, 39, 0.85);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 12px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 6px;
  backdrop-filter: blur(8px);
  cursor: pointer;
  opacity: 0;
  transform: translateY(6px);
  transition: var(--cs-port-transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  z-index: 3;
}

.cs-portfolio-card:hover .cs-media-expand-btn {
  opacity: 1;
  transform: translateY(0);
}

.cs-media-expand-btn:hover {
  background: var(--cs-port-primary);
  border-color: var(--cs-port-primary);
  color: #ffffff;
}

/* Card Body */
.cs-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.cs-card-client-tag {
  font-size: 12px;
  font-weight: 600;
  color: #6b7280;
  margin-bottom: 6px;
  text-transform: none !important;
}

.cs-card-title {
  font-family: 'Outfit', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--cs-port-text-dark);
  margin: 0 0 10px;
  line-height: 1.3;
}

.cs-card-desc {
  font-size: 14px;
  color: var(--cs-port-text);
  line-height: 1.6;
  margin: 0 0 18px;
  flex-grow: 1;
}

/* Tech Tags */
.cs-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 22px;
}

.cs-tech-tag {
  font-size: 11px;
  font-weight: 600;
  color: #4b5563;
  background: #f3f4f6;
  border: 1px solid #e5e7eb;
  padding: 3px 9px;
  border-radius: var(--cs-port-radius-sm);
  transition: var(--cs-port-transition);
}

.cs-portfolio-card:hover .cs-tech-tag {
  background: #eef2ff;
  border-color: rgba(73, 104, 248, 0.25);
  color: #1d4ed8;
}

/* Card Actions */
.cs-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  border-top: 1px solid var(--cs-port-border);
  gap: 12px;
}

.cs-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--cs-port-primary);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-family: inherit;
  transition: var(--cs-port-transition);
}

.cs-card-link:hover {
  color: var(--cs-port-primary-hover);
  transform: translateX(3px);
}

.cs-card-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #eef2ff;
  color: #1d4ed8 !important;
  font-size: 12px;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 6px;
  border: 1px solid rgba(73, 104, 248, 0.25);
  text-decoration: none;
  transition: var(--cs-port-transition);
}

.cs-card-btn:hover {
  background: var(--cs-port-primary);
  color: #ffffff !important;
  box-shadow: 0 4px 12px var(--cs-port-primary-glow);
  transform: translateY(-2px);
}

/* =========================================================================
   4. FULLSCREEN NATIVE LIGHTBOX MODAL
   ========================================================================= */
.cs-lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 999999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.cs-lightbox-modal.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.cs-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(11, 15, 23, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  cursor: pointer;
}

.cs-lightbox-dialog {
  position: relative;
  z-index: 10;
  width: 92vw;
  max-width: 1100px;
  height: 90vh;
  max-height: 860px;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 16px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.96);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.cs-lightbox-modal.is-active .cs-lightbox-dialog {
  transform: scale(1);
}

/* Lightbox Header */
.cs-lightbox-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid #e5e7eb;
  background: #ffffff;
  flex-shrink: 0;
}

.cs-lightbox-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.cs-lightbox-badge {
  background: #eef2ff;
  color: #1d4ed8;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid rgba(73, 104, 248, 0.2);
}

.cs-lightbox-metric {
  background: #ecfdf5;
  color: #065f46;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid rgba(16, 185, 129, 0.3);
  display: inline-flex;
  align-items: center;
}

.cs-lightbox-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.cs-lightbox-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--cs-port-primary);
  color: #ffffff !important;
  font-size: 13px;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 6px;
  text-decoration: none;
  transition: var(--cs-port-transition);
}

.cs-lightbox-cta-btn:hover {
  background: var(--cs-port-primary-hover);
  transform: translateY(-1px);
}

.cs-lightbox-close-btn {
  background: #f3f4f6;
  border: 1px solid #e5e7eb;
  color: #4b5563;
  font-size: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--cs-port-transition);
}

.cs-lightbox-close-btn:hover {
  background: #fee2e2;
  color: #dc2626;
  border-color: #fca5a5;
  transform: rotate(90deg);
}

/* Lightbox Viewport & Image Scrolling */
.cs-lightbox-viewport {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 24px;
  background: #f8fafc;
  -webkit-overflow-scrolling: touch;
}

.cs-lightbox-loader {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--cs-port-primary);
  background: #f8fafc;
  z-index: 5;
}

.cs-lightbox-img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 8px;
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.15);
  transition: opacity 0.25s ease;
}

/* Navigation Buttons */
.cs-lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  color: #111827;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
  transition: var(--cs-port-transition);
}

.cs-lightbox-nav.prev {
  left: 16px;
}

.cs-lightbox-nav.next {
  right: 16px;
}

.cs-lightbox-nav:hover {
  background: var(--cs-port-primary);
  color: #ffffff;
  border-color: var(--cs-port-primary);
  transform: translateY(-50%) scale(1.08);
}

/* Lightbox Footer */
.cs-lightbox-footer {
  padding: 16px 24px;
  background: #ffffff;
  border-top: 1px solid #e5e7eb;
  flex-shrink: 0;
}

.cs-lightbox-title {
  font-family: 'Outfit', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: #111827;
  margin: 0 0 4px;
}

.cs-lightbox-desc {
  font-size: 13px;
  color: #4b5563;
  margin: 0;
  line-height: 1.5;
}

/* =========================================================================
   5. CLOSING CTA BANNER
   ========================================================================= */
.cs-portfolio-cta {
  margin-top: 90px;
  text-align: center;
}

.cs-portfolio-cta-box {
  background: #0b0f17;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--cs-port-radius-lg);
  padding: 60px 32px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 45px -10px rgba(0, 0, 0, 0.5);
}

.cs-portfolio-cta-box h2 {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: #ffffff !important;
  margin: 0 0 16px;
}

.cs-portfolio-cta-box p {
  font-size: 17px;
  color: #cbd5e1 !important;
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

.cs-cta-btn-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.cs-cta-primary-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  color: #4968f8 !important;
  font-size: 15px;
  font-weight: 700;
  padding: 14px 30px;
  border-radius: var(--cs-port-radius-sm);
  text-decoration: none;
  transition: var(--cs-port-transition);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.cs-cta-primary-btn:hover {
  background: #f1f5f9;
  color: #3553eb !important;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.35);
}

.cs-cta-secondary-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff !important;
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 15px;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: var(--cs-port-radius-sm);
  text-decoration: none;
  transition: var(--cs-port-transition);
}

.cs-cta-secondary-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.4);
  color: #ffffff !important;
  transform: translateY(-2px);
}

/* =========================================================================
   6. RESPONSIVE BREAKPOINTS
   ========================================================================= */
@media (max-width: 1080px) {
  .cs-portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

@media (max-width: 768px) {
  .cs-portfolio-hero {
    padding: 60px 0 35px;
  }
  .cs-portfolio-stats {
    flex-direction: column;
    gap: 16px;
    padding: 20px;
    width: 100%;
    box-sizing: border-box;
  }
  .cs-stat-divider {
    display: none;
  }
  .cs-portfolio-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .cs-portfolio-cta-box {
    padding: 40px 20px;
  }

  /* Responsive Lightbox */
  .cs-lightbox-dialog {
    width: 96vw;
    height: 94vh;
    max-height: 94vh;
    border-radius: 12px;
  }
  .cs-lightbox-header {
    padding: 10px 14px;
  }
  .cs-lightbox-cta-btn span {
    display: none;
  }
  .cs-lightbox-cta-btn {
    padding: 8px 12px;
  }
  .cs-lightbox-nav {
    width: 36px;
    height: 36px;
    font-size: 13px;
  }
  .cs-lightbox-nav.prev {
    left: 8px;
  }
  .cs-lightbox-nav.next {
    right: 8px;
  }
  .cs-lightbox-viewport {
    padding: 12px;
  }
  .cs-lightbox-footer {
    padding: 12px 16px;
  }
  .cs-lightbox-title {
    font-size: 16px;
  }
  .cs-lightbox-desc {
    font-size: 12px;
  }
}