/* ==========================================================================
   Sanadak Portfolio — Dynamic Alternating Rhythm System (Red First: Red -> White)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Outfit:wght@500;600;700;800&display=swap');

:root {
  --bg-white: #ffffff;
  --bg-red: #6b0f0f;
  
  --primary: #781e1e;
  --primary-hover: #9c2727;
  --accent: #c9a84c;
  --accent-hover: #b39239;
  
  --text-dark: #0f172a;
  --text-dark-muted: #64748b;
  --text-white: #ffffff;
  --text-white-muted: #cbd5e1;
  
  --border-light: #e2e8f0;
  --border-dark: rgba(255, 255, 255, 0.12);
  
  --container: 1140px;
  --radius: 12px;
  --radius-lg: 16px;
  
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px -4px rgba(15, 23, 42, 0.12);
  
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-red);
  color: var(--text-white);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 700;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Scroll-Based Reveal System (IntersectionObserver) */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delay helpers */
.delay-1 { transition-delay: 0.08s; }
.delay-2 { transition-delay: 0.16s; }
.delay-3 { transition-delay: 0.24s; }

/* Header & Navigation (Lighter Vibrant Crimson Red Navbar) */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(120, 24, 24, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.18);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-logo img {
  height: 68px;
  width: auto;
  object-fit: contain;
  transition: transform 0.25s ease;
}

.brand-logo:hover img {
  transform: scale(1.05);
}

.brand-name {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: #c9a84c;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu {
  display: none;
  padding: 1rem 1.5rem 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  background-color: #691515;
}

.mobile-menu.open {
  display: block;
}

.mobile-menu .nav-links {
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: #d97706;
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: #b45309;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background-color: var(--accent);
  color: #1a0505;
  font-weight: 700;
}

.btn-accent:hover {
  background-color: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-outline-dark {
  border-color: var(--primary);
  color: var(--primary);
  background-color: transparent;
}

.btn-outline-dark:hover {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-outline-light {
  border-color: rgba(255, 255, 255, 0.35);
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.08);
}

.btn-outline-light:hover {
  border-color: #ffffff;
  background-color: rgba(255, 255, 255, 0.18);
}

/* Main Layout & Alternating Sections */
.main-content {
  flex: 1;
}

.section {
  padding: 5rem 0;
}

/* Section Theme Classes */
.section-red {
  background-color: var(--bg-red);
  color: var(--text-white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.section-red .section-title {
  color: #ffffff;
}

.section-red .section-subtitle {
  color: var(--text-white-muted);
}

.section-white {
  background-color: var(--bg-white);
  color: var(--text-dark);
  border-bottom: 1px solid var(--border-light);
}

.section-white .section-title {
  color: var(--text-dark);
}

.section-white .section-subtitle {
  color: var(--text-dark-muted);
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.1rem;
  max-width: 600px;
}

.section-header {
  margin-bottom: 3rem;
}

.section-header.text-center {
  text-align: center;
}

.section-header.text-center .section-subtitle {
  margin: 0 auto;
}

/* Hero Section (100vh Full Viewport Height) */
.hero-section-red {
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  padding: 3rem 0;
  text-align: left;
  background-color: var(--bg-red);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-content {
  max-width: 760px;
}

.hero-title-white {
  font-size: clamp(2.5rem, 5.5vw, 4.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  line-height: 1.1;
  color: #ffffff;
}

.hero-description-muted {
  font-size: 1.25rem;
  color: var(--text-white-muted);
  margin-bottom: 2.25rem;
  max-width: 660px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Featured Projects Carousel Slider (White Section Context) */
.section-white .carousel-wrapper {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background-color: #520a0a;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow-lg);
}

.carousel-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  width: 100%;
}

.carousel-slide {
  min-width: 100%;
  flex: 0 0 100%;
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.slide-image-box {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.15);
  height: 320px;
  background-color: #1a0505;
}

.slide-image-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.slide-content-box {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.slide-category {
  display: inline-block;
  background-color: rgba(201, 168, 76, 0.18);
  color: var(--accent);
  border: 1px solid rgba(201, 168, 76, 0.3);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.85rem;
}

.slide-title {
  font-size: 1.85rem;
  margin-bottom: 0.75rem;
  color: #ffffff;
}

.slide-desc {
  color: var(--text-white-muted);
  font-size: 1rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.carousel-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.carousel-nav-btn:hover {
  background-color: var(--accent);
  color: #1a0505;
  border-color: var(--accent);
}

.carousel-nav-btn.prev { left: 1rem; }
.carousel-nav-btn.next { right: 1rem; }

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 0 1.5rem;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.2);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.carousel-dot.active {
  background-color: var(--accent);
  width: 28px;
  border-radius: 999px;
}

/* Services / Tech Solutions (RED Section Context) */
.section-red .services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.section-red .service-card {
  background-color: #520a0a;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.section-red .service-card:hover {
  border-color: rgba(201, 168, 76, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px -4px rgba(0, 0, 0, 0.4), var(--shadow-md);
}

.section-red .service-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background-color: rgba(201, 168, 76, 0.15);
  border: 1px solid rgba(201, 168, 76, 0.3);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
  position: relative;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s ease, background-color 0.35s ease, border-color 0.35s ease, color 0.35s ease;
}

.section-red .service-card:hover .service-icon {
  transform: rotate(-8deg) scale(1.08);
  background-color: rgba(201, 168, 76, 0.25);
  border-color: rgba(201, 168, 76, 0.5);
  color: #ffffff;
  box-shadow: 0 0 25px rgba(201, 168, 76, 0.4);
}

.section-red .service-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: #ffffff;
}

.section-red .service-desc {
  color: var(--text-white-muted);
  font-size: 0.95rem;
}

/* Global Tech Tags & Badges */
.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  background-color: rgba(255, 255, 255, 0.08);
  color: #f1f5f9;
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: var(--transition);
}

.tech-tag:hover {
  background-color: rgba(201, 168, 76, 0.18);
  border-color: rgba(201, 168, 76, 0.45);
  color: var(--accent);
  transform: translateY(-1px);
}

/* Our Team Cards (White Section Context) */
.section-white .team-card-white {
  background-color: #ffffff;
  border: 1px solid var(--border-light);
  color: var(--text-dark);
  box-shadow: var(--shadow-md);
}

.section-white .team-card-white .team-name {
  color: var(--text-dark);
}

.section-white .team-card-white .team-role {
  color: var(--primary);
}

/* CTA Banner Box */
.cta-box {
  background: linear-gradient(135deg, #470b0b 0%, #260404 100%);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 3.5rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.cta-title {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #ffffff;
}

.cta-desc {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 1.75rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* Project Detail Page */
.detail-header {
  margin-bottom: 2.5rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.back-link:hover {
  transform: translateX(-3px);
}

.detail-title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  margin-bottom: 0.75rem;
  color: #ffffff;
}

.detail-tagline {
  font-size: 1.15rem;
  color: var(--text-white-muted);
}

/* Project Detail Media Gallery (Side-by-Side Thumbnails + Autoplay Carousel) */
.project-gallery-container {
  display: flex;
  flex-direction: column-reverse;
  gap: 1.25rem;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .project-gallery-container {
    flex-direction: row;
    align-items: stretch;
    height: 480px;
  }
}

.gallery-thumbs-col {
  display: flex;
  flex-direction: row;
  gap: 0.75rem;
  overflow-x: auto;
  padding: 0.25rem;
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .gallery-thumbs-col {
    flex-direction: column;
    width: 140px;
    overflow-x: hidden;
    overflow-y: auto;
    padding: 0.25rem 0.35rem 0.25rem 0.1rem;
    height: 100%;
  }
}

/* Custom sleek scrollbar for thumbnails */
.gallery-thumbs-col::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
.gallery-thumbs-col::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 4px;
}
.gallery-thumbs-col::-webkit-scrollbar-thumb {
  background: rgba(201, 168, 76, 0.3);
  border-radius: 4px;
}
.gallery-thumbs-col::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

.gallery-thumb-btn {
  width: 100px;
  height: 70px;
  flex-shrink: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.15);
  background-color: #1a0505;
  cursor: pointer;
  padding: 0;
  position: relative;
  transition: var(--transition);
  opacity: 0.6;
}

@media (min-width: 768px) {
  .gallery-thumb-btn {
    width: 100%;
    height: 84px;
  }
}

.gallery-thumb-btn img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.gallery-thumb-btn:hover {
  opacity: 0.9;
  border-color: rgba(201, 168, 76, 0.6);
  transform: translateY(-1px);
}

.gallery-thumb-btn:hover img {
  transform: scale(1.05);
}

.gallery-thumb-btn.active {
  opacity: 1;
  border-color: var(--accent);
  box-shadow: 0 0 16px rgba(201, 168, 76, 0.45);
}

.detail-carousel-wrapper {
  position: relative;
  flex: 1;
  min-width: 0;
  height: 320px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background-color: #120303;
  box-shadow: var(--shadow-lg);
}

@media (min-width: 576px) {
  .detail-carousel-wrapper {
    height: 400px;
  }
}

@media (min-width: 768px) {
  .detail-carousel-wrapper {
    height: 100%;
  }
}

.detail-carousel-track {
  display: flex;
  height: 100%;
  transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
  width: 100%;
}

.detail-carousel-slide {
  min-width: 100%;
  flex: 0 0 100%;
  height: 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #120303;
}

.detail-carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background-color: #0d0202;
}

.detail-carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: rgba(18, 3, 3, 0.75);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.detail-carousel-btn:hover {
  background-color: var(--accent);
  color: #1a0505;
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(201, 168, 76, 0.5);
  transform: translateY(-50%) scale(1.08);
}

.detail-carousel-btn.prev { left: 1rem; }
.detail-carousel-btn.next { right: 1rem; }

.detail-carousel-counter {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  z-index: 10;
  background-color: rgba(18, 3, 3, 0.75);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(201, 168, 76, 0.35);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  letter-spacing: 0.05em;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.detail-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
}

.detail-block {
  margin-bottom: 2.5rem;
  background-color: #520a0a;
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.detail-block-title {
  font-size: 1.35rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  padding-bottom: 0.5rem;
  color: #ffffff;
}

.features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.features-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--text-white-muted);
}

.features-list li i {
  color: var(--accent);
  margin-top: 0.2rem;
}

.sidebar-card {
  background-color: #520a0a;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
  color: #ffffff;
}

/* Footer */
.footer {
  background-color: #3b0606;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 3rem 0 2rem;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
}

.footer-copy {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .carousel-slide {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 2rem 1.5rem;
  }
  
  .slide-image-box {
    height: 240px;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .hero-section-red {
    min-height: auto;
    padding: 4rem 0 3.5rem;
  }
  
  .section {
    padding: 3.5rem 0;
  }
}