/* ============================================
   CASE STUDIES PAGE - casestudies.css
   Fifth M Digital Agency
   ============================================ */

/* --- CSS Variables --- */
:root {
  --bg-primary: #0a0a0a;
  --bg-card: #161616;
  --accent-red: #e63946;
  --font-primary: 'Sora', sans-serif;
  --font-secondary: 'Space Grotesk', sans-serif;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-muted: #6b6b6b;
  --glass-bg: rgba(22, 22, 22, 0.6);
  --glass-border: rgba(255, 255, 255, 0.06);
  --accent-gradient: linear-gradient(135deg, #e63946, #ff6b6b, #e63946);
  --accent-glow: rgba(230, 57, 70, 0.25);
  --card-radius: 20px;
  --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Hero Section --- */
.cs-hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  background: var(--bg-primary);
  padding: 120px 20px 80px;
}

.cs-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

/* Animated diagonal lines */
.cs-hero-line {
  position: absolute;
  width: 1px;
  height: 200%;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(230, 57, 70, 0.15) 30%,
    rgba(230, 57, 70, 0.4) 50%,
    rgba(230, 57, 70, 0.15) 70%,
    transparent 100%
  );
  animation: cs-lineFloat 8s ease-in-out infinite;
  transform-origin: top center;
}

.cs-hero-line:nth-child(1) { left: 10%; animation-delay: 0s; animation-duration: 7s; transform: rotate(15deg); }
.cs-hero-line:nth-child(2) { left: 25%; animation-delay: 1.5s; animation-duration: 9s; transform: rotate(-8deg); }
.cs-hero-line:nth-child(3) { left: 40%; animation-delay: 0.8s; animation-duration: 6s; transform: rotate(22deg); }
.cs-hero-line:nth-child(4) { left: 55%; animation-delay: 2.2s; animation-duration: 10s; transform: rotate(-12deg); }
.cs-hero-line:nth-child(5) { left: 70%; animation-delay: 0.3s; animation-duration: 8s; transform: rotate(18deg); }
.cs-hero-line:nth-child(6) { left: 85%; animation-delay: 1.8s; animation-duration: 7.5s; transform: rotate(-20deg); }
.cs-hero-line:nth-child(7) { left: 50%; animation-delay: 3s; animation-duration: 11s; transform: rotate(5deg); }
.cs-hero-line:nth-child(8) { left: 15%; animation-delay: 2.5s; animation-duration: 8.5s; transform: rotate(-15deg); }

@keyframes cs-lineFloat {
  0%, 100% { transform: translateY(-30%) rotate(var(--r, 15deg)); opacity: 0.3; }
  50% { transform: translateY(10%) rotate(var(--r, 15deg)); opacity: 1; }
}

/* Radial glow */
.cs-hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(230, 57, 70, 0.08) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: cs-glowPulse 6s ease-in-out infinite;
}

@keyframes cs-glowPulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; }
  50% { transform: translate(-50%, -50%) scale(1.3); opacity: 1; }
}

/* Grid overlay */
.cs-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: cs-gridShift 20s linear infinite;
}

@keyframes cs-gridShift {
  0% { transform: translate(0, 0); }
  100% { transform: translate(60px, 60px); }
}

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

.cs-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(230, 57, 70, 0.1);
  border: 1px solid rgba(230, 57, 70, 0.25);
  border-radius: 50px;
  color: var(--accent-red);
  font-family: var(--font-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 28px;
  backdrop-filter: blur(10px);
}

.cs-hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-red);
  border-radius: 50%;
  animation: cs-dotPulse 2s ease-in-out infinite;
}

@keyframes cs-dotPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.6); }
}

.cs-hero-title {
  font-family: var(--font-primary);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 300;
  color: rgba(255,255,255,0.7);
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -1.5px;
}

.cs-hero-title span {
  font-weight: 700;
  font-style: italic;
  color: #e63946;
}

.cs-hero-subtitle {
  font-family: var(--font-secondary);
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Scroll indicator */
.cs-hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-family: var(--font-secondary);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  z-index: 2;
}

.cs-hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, var(--accent-red), transparent);
  animation: cs-scrollBounce 2s ease-in-out infinite;
}

@keyframes cs-scrollBounce {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.5); opacity: 0.3; }
}


/* --- Case Studies Section --- */
.cs-studies-section {
  background: var(--bg-primary);
  padding: 100px 20px;
}

.cs-studies-container {
  max-width: 1200px;
  margin: 0 auto;
}

.cs-section-header {
  text-align: center;
  margin-bottom: 80px;
}

.cs-section-label {
  font-family: var(--font-secondary);
  font-size: 0.8rem;
  color: var(--accent-red);
  text-transform: uppercase;
  letter-spacing: 3px;
  font-weight: 600;
  margin-bottom: 16px;
}

.cs-section-title {
  font-family: var(--font-primary);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -1px;
}


/* --- Case Study Card --- */
.cs-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  margin-bottom: 100px;
  padding: 40px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
  transition: transform 0.5s var(--transition-smooth), box-shadow 0.5s var(--transition-smooth), border-color 0.5s var(--transition-smooth);
  /* Scroll reveal */
  opacity: 0;
  transform: translateY(60px);
}

.cs-card.cs-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.8s var(--transition-smooth), transform 0.8s var(--transition-smooth);
}

.cs-card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  bottom: -1px;
  border-radius: var(--card-radius);
  background: linear-gradient(135deg, rgba(230,57,70,0.15), transparent 40%, transparent 60%, rgba(230,57,70,0.08));
  z-index: -1;
  opacity: 0;
  transition: opacity 0.5s var(--transition-smooth);
}

.cs-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 30px 80px rgba(0,0,0,0.4), 0 0 40px var(--accent-glow);
  border-color: rgba(230, 57, 70, 0.15);
}

.cs-card:hover::before {
  opacity: 1;
}

/* Corner accent */
.cs-card-corner {
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  height: 100px;
  overflow: hidden;
}

.cs-card-corner::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 100px;
  height: 100px;
  background: rgba(230, 57, 70, 0.06);
  border-radius: 50%;
  transition: transform 0.5s var(--transition-smooth);
}

.cs-card:hover .cs-card-corner::before {
  transform: scale(2);
  background: rgba(230, 57, 70, 0.1);
}

/* Alternating layout */
.cs-card-reverse {
  direction: rtl;
}

.cs-card-reverse > * {
  direction: ltr;
}

/* Image side */
.cs-card-visual {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  aspect-ratio: 4/3;
}

.cs-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 14px;
  transition: transform 0.6s var(--transition-smooth), filter 0.6s var(--transition-smooth);
}

.cs-card:hover .cs-card-image {
  transform: scale(1.05);
  filter: brightness(1.1);
}

.cs-card-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10,10,10,0.7) 100%);
  border-radius: 14px;
  pointer-events: none;
}

.cs-card-number {
  position: absolute;
  top: 16px;
  left: 16px;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(230, 57, 70, 0.9);
  color: #fff;
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 700;
  border-radius: 10px;
  backdrop-filter: blur(10px);
}

/* Content side */
.cs-card-content {
  padding: 10px 0;
}

.cs-card-industry {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(230, 57, 70, 0.08);
  border: 1px solid rgba(230, 57, 70, 0.2);
  border-radius: 6px;
  color: var(--accent-red);
  font-family: var(--font-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 18px;
}

.cs-card-industry-icon {
  font-size: 0.85rem;
}

.cs-card-title {
  font-family: var(--font-primary);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.cs-card-challenge-label {
  font-family: var(--font-secondary);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: 600;
}

.cs-card-challenge {
  font-family: var(--font-secondary);
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}

/* Stats */
.cs-card-stats {
  display: flex;
  gap: 24px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.cs-stat {
  text-align: center;
  padding: 16px 20px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 12px;
  min-width: 100px;
  flex: 1;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.cs-stat:hover {
  border-color: rgba(230, 57, 70, 0.25);
  transform: translateY(-2px);
}

.cs-stat-value {
  font-family: var(--font-primary);
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, #e63946, #ff6b6b, #ff8a80);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  margin-bottom: 4px;
}

.cs-stat-label {
  font-family: var(--font-secondary);
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

/* Technology Tags */
.cs-card-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.cs-tech-tag {
  padding: 6px 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  font-family: var(--font-secondary);
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all 0.3s ease;
  cursor: default;
}

.cs-tech-tag:hover {
  background: rgba(230, 57, 70, 0.1);
  border-color: rgba(230, 57, 70, 0.3);
  color: var(--accent-red);
  transform: translateY(-1px);
}


/* --- CTA Section --- */
.cs-cta-section {
  background: var(--bg-primary);
  padding: 100px 20px;
  position: relative;
  overflow: hidden;
}

.cs-cta-container {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 2;
  padding: 60px 40px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.cs-cta-container::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--card-radius);
  background: linear-gradient(135deg, rgba(230,57,70,0.2), transparent 50%, rgba(230,57,70,0.1));
  z-index: -1;
}

.cs-cta-icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  background: rgba(230, 57, 70, 0.1);
  border: 1px solid rgba(230, 57, 70, 0.2);
  border-radius: 16px;
  font-size: 1.5rem;
}

.cs-cta-title {
  font-family: var(--font-primary);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.cs-cta-title span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cs-cta-text {
  font-family: var(--font-secondary);
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

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

.cs-cta-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  background: var(--accent-red);
  color: #fff;
  font-family: var(--font-secondary);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: 12px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.cs-cta-btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(255,255,255,0.15), transparent);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}

.cs-cta-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(230, 57, 70, 0.4);
}

.cs-cta-btn-primary:hover::before {
  transform: translateX(100%);
}

.cs-cta-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-secondary);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 12px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s var(--transition-smooth);
}

.cs-cta-btn-secondary:hover {
  border-color: var(--accent-red);
  color: var(--accent-red);
  transform: translateY(-2px);
}

/* CTA background orbs */
.cs-cta-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.cs-cta-orb-1 {
  width: 300px;
  height: 300px;
  background: rgba(230, 57, 70, 0.06);
  top: -100px;
  left: -100px;
  animation: cs-orbFloat 8s ease-in-out infinite;
}

.cs-cta-orb-2 {
  width: 250px;
  height: 250px;
  background: rgba(230, 57, 70, 0.05);
  bottom: -80px;
  right: -80px;
  animation: cs-orbFloat 10s ease-in-out infinite reverse;
}

@keyframes cs-orbFloat {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, -30px); }
}


/* --- Footer --- */
.cs-footer {
  background: var(--bg-primary);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 40px 20px;
  text-align: center;
}

.cs-footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.cs-footer-logo {
  font-family: var(--font-primary);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.cs-footer-logo span {
  color: var(--accent-red);
}

.cs-footer-copy {
  font-family: var(--font-secondary);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.cs-footer-links {
  display: flex;
  gap: 24px;
}

.cs-footer-link {
  font-family: var(--font-secondary);
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

.cs-footer-link:hover {
  color: var(--accent-red);
}


/* --- Responsive --- */
@media (max-width: 1024px) {
  .cs-card {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 28px;
  }

  .cs-card-reverse {
    direction: ltr;
  }

  .cs-card-visual {
    aspect-ratio: 16/9;
  }

  .cs-card-stats {
    gap: 12px;
  }

  .cs-stat {
    min-width: 80px;
    padding: 12px 14px;
  }
}

@media (max-width: 768px) {
  .cs-hero {
    min-height: 60vh;
    padding: 100px 16px 60px;
  }

  .cs-studies-section {
    padding: 60px 16px;
  }

  .cs-card {
    padding: 20px;
    margin-bottom: 60px;
  }

  .cs-card-stats {
    flex-direction: column;
    gap: 10px;
  }

  .cs-stat {
    display: flex;
    align-items: center;
    gap: 12px;
    text-align: left;
  }

  .cs-cta-container {
    padding: 40px 24px;
  }

  .cs-cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .cs-footer-container {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .cs-hero-title {
    font-size: 2.2rem;
  }

  .cs-card-title {
    font-size: 1.3rem;
  }

  .cs-stat-value {
    font-size: 1.3rem;
  }

  .cs-card-tech {
    gap: 6px;
  }

  .cs-tech-tag {
    font-size: 0.7rem;
    padding: 5px 10px;
  }
}


/* --- Scroll Reveal Utility --- */
.cs-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s var(--transition-smooth), transform 0.7s var(--transition-smooth);
}

.cs-reveal.cs-visible {
  opacity: 1;
  transform: translateY(0);
}

.cs-reveal-delay-1 { transition-delay: 0.1s; }
.cs-reveal-delay-2 { transition-delay: 0.2s; }
.cs-reveal-delay-3 { transition-delay: 0.3s; }
.cs-reveal-delay-4 { transition-delay: 0.4s; }