/* NovusGrid Case Study Page Styles — case-study.css */
/* Companion to css/style.css — inherits all design tokens */

/* Main Layout */
.cs-main {
  padding-top: 64px; /* Navbar offset */
}

/* ---- Case Study Hero ---- */
.cs-hero {
  position: relative;
  overflow: hidden;
  background-color: #ffffff;
  padding-top: 100px;
  padding-bottom: 80px;
}

.cs-hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

/* Back link */
.cs-back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-outline);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 32px;
  transition: color 0.2s ease;
}
.cs-back-link:hover {
  color: var(--color-primary);
}
.cs-back-link .material-symbols-outlined {
  font-size: 1rem !important;
  transition: transform 0.2s ease;
}
.cs-back-link:hover .material-symbols-outlined {
  transform: translateX(-3px);
}

/* Industry badge */
.cs-industry-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(83, 44, 230, 0.06);
  border: 1px solid rgba(83, 44, 230, 0.15);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.cs-industry-badge .material-symbols-outlined {
  font-size: 1rem !important;
}

/* Client name headline */
.cs-client-name {
  color: var(--color-on-background);
  margin-bottom: 16px;
  line-height: 1.05;
}

/* Tagline */
.cs-tagline {
  color: var(--color-on-surface-variant);
  max-width: 600px;
  margin-bottom: 28px;
  line-height: 1.7;
}

/* Service tags on hero */
.cs-service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.cs-service-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(83, 44, 230, 0.06);
  border: 1px solid rgba(83, 44, 230, 0.15);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-primary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---- Generic Case Study Section ---- */
.cs-section {
  position: relative;
}

.cs-section-title {
  margin-top: 12px;
  margin-bottom: 20px;
  color: var(--color-on-background);
}

.cs-body-text {
  color: var(--color-on-surface-variant);
  line-height: 1.75;
}

.cs-body-max {
  max-width: 680px;
}

/* ---- Overview Grid ---- */
.cs-overview-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 64px;
  align-items: start;
}

.cs-overview-left {}

.cs-overview-meta {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 32px;
  background: rgba(83, 44, 230, 0.03);
  border: 1px solid rgba(83, 44, 230, 0.08);
  border-radius: var(--radius-xl);
}

.cs-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(83, 44, 230, 0.06);
}
.cs-meta-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.cs-meta-item:first-child {
  padding-top: 0;
}

.cs-meta-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--color-outline);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.cs-meta-value {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-on-surface);
}

/* ---- Challenge Section ---- */
.cs-challenge-section {
  background: linear-gradient(180deg, rgba(83, 44, 230, 0.02) 0%, transparent 100%);
}

/* ---- Strategy Grid ---- */
.cs-strategy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.cs-strategy-pillars {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 48px;
}

.cs-strategy-pill {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(83, 44, 230, 0.08);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
}
.cs-strategy-pill:hover {
  border-color: rgba(83, 44, 230, 0.2);
  box-shadow: 0 8px 20px rgba(83, 44, 230, 0.06);
  transform: translateY(-2px);
}
.cs-strategy-pill .material-symbols-outlined {
  font-size: 1.4rem !important;
  color: var(--color-primary);
  margin-top: 2px;
  flex-shrink: 0;
}
.cs-strategy-pill strong {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-on-background);
  display: block;
  margin-bottom: 4px;
}
.cs-strategy-pill p {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-on-surface-variant);
  line-height: 1.5;
  margin: 0;
}

/* ---- Gallery Grid ---- */
.cs-gallery-header {
  margin-bottom: 32px;
}

.cs-gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.cs-gallery-img {
  width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
  aspect-ratio: 16/9;
  display: block;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease;
}

.cs-gallery-img:hover {
  transform: scale(1.02);
  box-shadow: 0 20px 40px rgba(11, 28, 48, 0.1);
}

.cs-gallery-wide {
  grid-column: span 2;
}

/* ---- Video Embeds ---- */
.cs-video-header {
  margin-bottom: 32px;
}

.cs-video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.cs-video-embed {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-surface-container-lowest);
  border: 1px solid var(--color-outline-variant);
}

.cs-video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: var(--radius-lg);
}

/* ---- Results / Metrics ---- */
.cs-results-section {
  background: linear-gradient(180deg, rgba(83, 44, 230, 0.03) 0%, transparent 100%);
}

.cs-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
  margin-bottom: 24px;
}

.cs-metric-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(83, 44, 230, 0.1);
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 20px rgba(11, 28, 48, 0.03);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.cs-metric-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(83, 44, 230, 0.08);
  border-color: rgba(83, 44, 230, 0.22);
}

.cs-metric-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.cs-metric-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-outline);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1.4;
}

.cs-results-note {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-outline);
  letter-spacing: 0.03em;
}

/* ---- Testimonial Card ---- */
.cs-testimonial-card {
  background: linear-gradient(135deg, rgba(83, 44, 230, 0.04) 0%, rgba(108, 77, 255, 0.02) 100%);
  border: 1px solid rgba(83, 44, 230, 0.1);
  border-radius: var(--radius-2xl);
  padding: 60px;
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}

.cs-testimonial-quote-mark {
  font-family: var(--font-display);
  font-size: 6rem;
  font-weight: 900;
  color: var(--color-primary);
  opacity: 0.15;
  line-height: 0.8;
  margin-bottom: 24px;
  user-select: none;
}

.cs-testimonial-text {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--color-on-surface);
  line-height: 1.6;
  margin: 0 0 28px;
  font-style: normal;
}

.cs-testimonial-author {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
}

.cs-testimonial-name {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-on-background);
}

.cs-testimonial-role {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-outline);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---- Next Project Strip ---- */
.cs-next-section {
  border-top: 1px solid var(--color-outline-variant);
}

.cs-next-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  padding-bottom: 24px;
}

.cs-next-title {
  margin: 8px 0 0;
}
.cs-next-title a {
  color: var(--color-on-background);
  transition: color 0.2s ease;
}
.cs-next-title a:hover {
  color: var(--color-primary);
}

.cs-next-arrow {
  width: 60px;
  height: 60px;
  flex-shrink: 0;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .cs-overview-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .cs-strategy-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .cs-metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .cs-hero {
    padding-top: 80px;
    padding-bottom: 60px;
  }
  .cs-client-name {
    font-size: 2.5rem;
  }
  .cs-gallery-grid {
    grid-template-columns: 1fr;
  }
  .cs-gallery-wide {
    grid-column: span 1;
  }
  .cs-video-grid {
    grid-template-columns: 1fr;
  }
  .cs-metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cs-testimonial-card {
    padding: 36px 24px;
  }
  .cs-testimonial-text {
    font-size: 1.1rem;
  }
  .cs-next-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
}

@media (max-width: 480px) {
  .cs-metrics-grid {
    grid-template-columns: 1fr;
  }
}

/* ================================================================
   VERTICAL VIDEO GALLERY & LIGHTBOX LIGHTWEIGHT STYLES
   ================================================================ */

.cs-video-gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  margin-bottom: 48px;
}

.cs-video-card {
  position: relative;
  aspect-ratio: 9/16;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background-color: #0b1c30;
  border: 1px solid rgba(83, 44, 230, 0.1);
  box-shadow: 0 8px 30px rgba(11, 28, 48, 0.08);
  cursor: pointer;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.4s ease, border-color 0.3s ease;
}

.cs-video-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 24px 50px rgba(83, 44, 230, 0.16);
  border-color: rgba(83, 44, 230, 0.3);
}

.cs-video-thumbnail-container {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.cs-video-thumbnail-container video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Dark gradient overlay on thumbnail */
.cs-video-thumbnail-container::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, transparent 60%);
  z-index: 2;
  transition: opacity 0.3s ease;
}

.cs-video-card:hover .cs-video-thumbnail-container::after {
  opacity: 0.45;
}

.cs-video-play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3;
}

.cs-video-play-btn {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(83, 44, 230, 0.2);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.3s ease;
}

.cs-video-play-btn span {
  font-size: 2rem !important;
  margin-left: 2px;
}

.cs-video-card:hover .cs-video-play-btn {
  transform: scale(1.12);
  background: #ffffff;
  color: var(--color-primary-container);
}

/* Video info overlay */
.cs-video-info-strip {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  z-index: 4;
}
.cs-video-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 4px;
}
.cs-video-subtitle {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0;
}

/* Lightbox Modal */
.video-lightbox-overlay {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(11, 28, 48, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.video-lightbox-overlay.open {
  opacity: 1;
  visibility: visible;
}

.video-lightbox-container {
  position: relative;
  width: 90%;
  max-width: 420px;
  aspect-ratio: 9/16;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  background: #000;
  box-shadow: 0 30px 90px rgba(0,0,0,0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transform: scale(0.9);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.video-lightbox-overlay.open .video-lightbox-container {
  transform: scale(1);
}

.video-lightbox-player {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.video-lightbox-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 1010;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  cursor: pointer;
  transition: background 0.3s, transform 0.2s;
  font-size: 1.2rem !important;
}

.video-lightbox-close:hover {
  background: rgba(255,255,255,0.3);
  transform: scale(1.05);
}

@media (max-width: 991px) {
  .cs-video-gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (max-width: 576px) {
  .cs-video-gallery-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .video-lightbox-container {
    max-width: 320px;
  }
}