/* ==========================================================================
   BURKINO CINEMA — MAIN STYLESHEET
   Core Layout, Navigation, Sections, and Interactions
   ========================================================================== */

/* --------------------------------------------------------------------------
   HEADER & NAVIGATION
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: background-color var(--transition-normal), 
              border-color var(--transition-normal), 
              backdrop-filter var(--transition-normal),
              transform var(--transition-normal);
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  background-color: var(--bg-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: clamp(1rem, 2vw, 2.5rem);
}

.nav-left {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 1.45vw, 1.45rem);
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--text-primary);
  line-height: 1.1;
  text-transform: uppercase;
}

.brand-subtitle {
  font-family: var(--font-mono);
  font-size: clamp(0.54rem, 0.65vw, 0.65rem);
  letter-spacing: 0.22em;
  color: var(--accent-gold);
  text-transform: uppercase;
  margin-top: 2px;
}

.nav-center {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  max-width: clamp(560px, 50vw, 840px);
  margin: 0 auto;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links li {
  display: flex;
  align-items: center;
}

.nav-link {
  font-family: var(--font-sans);
  font-size: clamp(0.74rem, 0.85vw, 0.88rem);
  font-weight: 400;
  letter-spacing: clamp(0.06em, 0.08em, 0.1em);
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 1px;
  background-color: var(--accent-gold);
  transition: width var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #4ade80;
  box-shadow: 0 0 8px #4ade80;
  animation: pulse-dot 2s infinite ease-in-out;
  flex-shrink: 0;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.2vw, 16px);
  flex-shrink: 0;
  justify-content: flex-end;
}

.btn-book-nav {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--accent-champagne);
  font-family: var(--font-mono);
  font-size: clamp(0.68rem, 0.76vw, 0.75rem);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 7px clamp(12px, 1.1vw, 18px);
  border-radius: 40px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  white-space: nowrap;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-book-nav:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.btn-book-nav svg {
  color: var(--accent-gold);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.btn-book-nav:hover svg {
  color: #ffffff;
  transform: translate(1px, -1px);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  z-index: 1001;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background-color: var(--text-primary);
  transition: all var(--transition-normal);
}

.mobile-toggle.active span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   HERO SECTION
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: var(--header-height);
  padding-bottom: var(--space-3xl);
}

/* Background Reel Video & Canvas */
.hero-media {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: hidden;
  background-color: var(--bg-primary);
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.72) contrast(1.06);
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.84) contrast(1.05);
  transform: scale(1.01);
  animation: hero-ken-burns 30s infinite alternate ease-in-out;
}

@keyframes hero-ken-burns {
  0% {
    transform: scale(1.01) translate(0, 0);
  }
  100% {
    transform: scale(1.04) translate(-0.4%, -0.4%);
  }
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--bg-primary) 0%, rgba(9, 9, 11, 0.4) 30%, transparent 65%),
              linear-gradient(to bottom, rgba(9, 9, 11, 0.6) 0%, transparent 35%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.hero-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: var(--space-lg);
  padding: 6px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  border-radius: 999px;
  animation: fade-slide-up 1s var(--ease-cinematic) forwards;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6.5vw, 5.5rem);
  font-weight: 500;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  letter-spacing: -0.02em;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.7);
  animation: fade-slide-up 1.2s var(--ease-cinematic) forwards;
}

.hero-subtitle {
  font-family: var(--font-sans);
  font-size: clamp(0.95rem, 1.25vw, 1.15rem);
  font-weight: 350;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto var(--space-lg) auto;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.8);
  animation: fade-slide-up 1.4s var(--ease-cinematic) forwards;
}

.hero-author {
  font-family: var(--font-sans);
  font-size: clamp(0.76rem, 0.95vw, 0.85rem);
  font-style: normal;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin: 0 auto var(--space-2xl) auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  opacity: 0.9;
  animation: fade-slide-up 1.5s var(--ease-cinematic) forwards;
}

.hero-author::before,
.hero-author::after {
  content: "";
  display: inline-block;
  width: 20px;
  height: 1px;
  background-color: rgba(255, 255, 255, 0.12);
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  animation: fade-slide-up 1.6s var(--ease-cinematic) forwards;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background-color: #f7f6f2;
  color: #09090b;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 15px 34px;
  border-radius: 40px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: all var(--transition-normal);
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.btn-primary:hover {
  background-color: #ffffff;
  color: #000;
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.12);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background-color: rgba(255, 255, 255, 0.03);
  color: #e4e4e8;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 15px 32px;
  border-radius: 40px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  transform: translateY(-2px);
}

/* Hero Controls (Mute / Fullscreen / Sound Preview) */
.hero-controls {
  position: absolute;
  bottom: var(--space-xl);
  right: var(--container-pad);
  z-index: 20;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.btn-control {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(18, 18, 22, 0.6);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(16px);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 8px 16px;
  border-radius: 30px;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.btn-control:hover,
.btn-control.active {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-xl);
  left: var(--container-pad);
  z-index: 20;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.scroll-line {
  width: 32px;
  height: 1px;
  background: var(--text-muted);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: #ffffff;
  animation: scroll-line-move 2s infinite ease-in-out;
}

@keyframes scroll-line-move {
  0% { left: -100%; }
  50% { left: 0; }
  100% { left: 100%; }
}

@keyframes fade-slide-up {
  0% {
    opacity: 0;
    transform: translateY(24px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --------------------------------------------------------------------------
   SECTION HEADERS (EDITORIAL STANDARD)
   -------------------------------------------------------------------------- */
.section {
  padding-top: clamp(4rem, 8vw, 8rem);
  padding-bottom: clamp(4rem, 8vw, 8rem);
  position: relative;
  width: 100%;
  max-width: 100%;
  overflow-x: clip;
}

.section-header {
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.section-header.text-center {
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-gold);
  display: block;
  margin-bottom: var(--space-xs);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4vw, 3.6rem);
  font-weight: 500;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  letter-spacing: -0.01em;
}

.section-title em,
h1 em, h2 em, h3 em, h4 em,
.hero-title em {
  font-style: normal;
  font-weight: 500;
  color: var(--accent-champagne);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.65;
}

.section-header.text-center .section-desc {
  margin-left: auto;
  margin-right: auto;
}

/* --------------------------------------------------------------------------
   PORTFOLIO GRID SECTION
   -------------------------------------------------------------------------- */
.portfolio-section .section-number {
  margin-bottom: var(--space-sm);
}

.portfolio-filters {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  flex-wrap: wrap;
  margin-bottom: var(--space-2xl);
}

.filter-btn {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 8px 20px;
  border-radius: 30px;
  background: transparent;
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.filter-btn.active {
  color: #0a0a0c;
  background: var(--accent-champagne);
  border-color: var(--accent-champagne);
  font-weight: 600;
}

/* Grid Layout */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(1.25rem, 2.5vw, 2.5rem);
}

.project-card {
  position: relative;
  background: var(--bg-surface);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform var(--transition-normal), 
              border-color var(--transition-normal), 
              box-shadow var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-border);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7);
}

/* Span classes */
.project-card.span-12 {
  grid-column: span 12;
}

.project-card.span-8 {
  grid-column: span 8;
}

.project-card.span-6 {
  grid-column: span 6;
}

.project-card.span-4 {
  grid-column: span 4;
}

.project-thumbnail-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: #050506;
}

.project-card.span-12 .project-thumbnail-wrapper,
.project-card.span-6 .project-thumbnail-wrapper,
.project-card.span-4 .project-thumbnail-wrapper {
  aspect-ratio: 16 / 9;
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.8s var(--ease-cinematic);
}

.project-card:hover .project-img {
  transform: scale(1.04);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(9, 9, 11, 0.95) 0%, rgba(9, 9, 11, 0.2) 50%, rgba(9, 9, 11, 0.4) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.play-badge {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  color: #0a0a0c;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.85);
  transition: transform var(--transition-normal), background-color var(--transition-fast);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.project-card:hover .play-badge {
  transform: scale(1);
}

.play-badge svg {
  margin-left: 3px;
  width: 24px;
  height: 24px;
}

.project-meta-badges {
  position: absolute;
  top: 16px;
  left: 16px;
  right: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 5;
  pointer-events: none;
}

.badge-tag {
  background: rgba(10, 10, 12, 0.75);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-subtle);
  color: var(--accent-champagne);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 20px;
}

.badge-duration {
  background: rgba(10, 10, 12, 0.75);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 4px 8px;
  border-radius: 6px;
}

.project-info {
  padding: clamp(1rem, 2vw, 1.75rem);
  background: var(--bg-surface);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-city {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  color: var(--accent-gold);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.project-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.project-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-md);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.project-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border-ultra-subtle);
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-top: auto;
}

.project-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-gold);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}

.project-cta:hover {
  opacity: 0.85;
}

.project-cta svg {
  transition: transform var(--transition-fast);
}

.project-card:hover .project-cta svg {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   FOOTER
   -------------------------------------------------------------------------- */
.footer {
  background-color: #060608;
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-4xl) 0 var(--space-2xl) 0;
  position: relative;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand {
  max-width: 380px;
}

.footer-brand .brand-title {
  font-size: 1.8rem;
  margin-bottom: var(--space-xs);
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-top: var(--space-md);
}

.footer-links-group {
  display: flex;
  gap: clamp(2rem, 5vw, 5rem);
  flex-wrap: wrap;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: var(--space-md);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-ultra-subtle);
  font-size: 0.8rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.back-to-top:hover {
  color: var(--accent-gold);
}