/* ============================================
   Shaji N. Karun Foundation — Style Sheet
   ============================================ */

/* --- Custom Properties --- */
:root {
  --color-bg: #0a0a0a;
  --color-bg-warm: #1a1612;
  --color-bg-mid: #111111;
  --color-text: #e8e0d4;
  --color-text-muted: #9a9088;
  --color-accent: #c9a84c;
  --color-accent-dim: rgba(201, 168, 76, 0.12);
  --color-divider: rgba(201, 168, 76, 0.4);

  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, sans-serif;
  --font-accent: 'Playfair Display', Georgia, serif;

  --space-xs: 1rem;
  --space-sm: 2rem;
  --space-md: 4rem;
  --space-lg: 6rem;
  --space-xl: 8rem;

  --max-text: 720px;
  --max-content: 1200px;

  --transition: 0.4s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 300;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  font-size: clamp(0.95rem, 0.9rem + 0.25vw, 1.0625rem);
  overflow-x: hidden;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity var(--transition);
}

a:hover {
  opacity: 0.8;
}

/* --- Page Fade In --- */
body {
  animation: fadeFromBlack 1.5s ease forwards;
}

@keyframes fadeFromBlack {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.hero h1 {
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

h1 {
  font-size: clamp(2.4rem, 2rem + 2vw, 4rem);
  letter-spacing: 0.05em;
}

h2 {
  font-size: clamp(1.6rem, 1.3rem + 1.5vw, 2.8rem);
  margin-bottom: var(--space-sm);
}

h3 {
  font-size: clamp(1.1rem, 1rem + 0.5vw, 1.5rem);
  letter-spacing: 0.06em;
  margin-bottom: var(--space-xs);
}

h4 {
  font-size: clamp(0.9rem, 0.85rem + 0.2vw, 1.1rem);
  color: var(--color-accent);
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1.2em;
}

p:last-child {
  margin-bottom: 0;
}

/* --- Utility --- */
.container {
  width: 90%;
  max-width: var(--max-content);
  margin: 0 auto;
}

.text-column {
  max-width: var(--max-text);
  margin: 0 auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* --- Triangle Divider (logo motif) --- */
.section-divider {
  border: none;
  background: none;
  height: 40px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.section-divider::before {
  content: '';
  width: 60px;
  height: 1px;
  background: var(--color-divider);
}

.section-divider::after {
  content: '';
  width: 60px;
  height: 1px;
  background: var(--color-divider);
}

/* Triangle icon inside divider — added via HTML inline SVG */
.divider-triangle {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  opacity: 0.4;
}

/* --- Decorative Triangle Accents --- */
.triangle-accent {
  position: absolute;
  opacity: 0.04;
  pointer-events: none;
  z-index: 0;
}

.triangle-accent svg {
  width: 100%;
  height: 100%;
}

/* --- Section Base --- */
.section {
  padding: var(--space-lg) 0;
  position: relative;
  overflow: hidden;
}

.section > .container {
  position: relative;
  z-index: 1;
}

/* --- Section Background Images --- */
.section-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.section-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.6);
}

/* --- Section Number --- */
.section-number {
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(4rem, 3rem + 4vw, 8rem);
  color: var(--color-accent);
  opacity: 0.12;
  display: block;
  text-align: center;
  line-height: 1;
  margin-bottom: var(--space-sm);
  user-select: none;
  pointer-events: none;
}

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ============================================
   NAVIGATION
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: background var(--transition), padding var(--transition);
}

.site-header.scrolled {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 0.6rem 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 90%;
  max-width: var(--max-content);
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-logo span {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

.nav-links a {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent);
  opacity: 1;
}

.nav-links a.active::after {
  width: 100%;
}

/* Hamburger */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile overlay */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 10, 0.97);
  z-index: 999;
  align-items: center;
  justify-content: center;
}

.mobile-overlay.open {
  display: flex;
}

.mobile-nav {
  list-style: none;
  text-align: center;
}

.mobile-nav li {
  margin: 1.5rem 0;
}

.mobile-nav a {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color var(--transition);
}

.mobile-nav a:hover {
  color: var(--color-accent);
  opacity: 1;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    url('../assets/achan_side_portrait.webp') right center / contain no-repeat;
  background-color: var(--color-bg);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(10, 10, 10, 0.3) 0%,
    rgba(10, 10, 10, 0.1) 40%,
    rgba(10, 10, 10, 0.4) 100%
  ),
  linear-gradient(
    to bottom,
    rgba(10, 10, 10, 0.4) 0%,
    rgba(10, 10, 10, 0.2) 50%,
    rgba(10, 10, 10, 0.85) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 0 var(--space-sm);
}

.hero-logo {
  width: 180px;
  height: auto;
  margin: 0 auto var(--space-sm);
  filter: drop-shadow(0 4px 30px rgba(201, 168, 76, 0.25));
}

.hero h1 {
  margin-bottom: 0.5em;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.hero-tagline {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1rem, 0.9rem + 0.5vw, 1.3rem);
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

.scroll-cue {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-cue svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-text-muted);
  opacity: 0.6;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* ============================================
   I. THE ESSENCE
   ============================================ */
.essence-bg {
  background-image: url('../assets/background/piravi_2.jpg');
  background-position: center 30%;
}

.essence-quote {
  margin-top: var(--space-sm);
  padding-left: 1.5rem;
  border-left: 2px solid var(--color-accent);
}

.essence-quote p {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.1rem, 1rem + 0.4vw, 1.3rem);
  line-height: 1.8;
  color: var(--color-text);
}

.essence-quote cite {
  display: block;
  font-family: var(--font-body);
  font-style: normal;
  font-weight: 400;
  font-size: 0.85rem;
  color: var(--color-accent);
  margin-top: 0.75rem;
  letter-spacing: 0.04em;
}

.essence .drop-cap::first-letter {
  font-family: var(--font-accent);
  font-weight: 400;
  float: left;
  font-size: 3.5em;
  line-height: 0.8;
  padding-right: 0.1em;
  padding-top: 0.05em;
  color: var(--color-accent);
}

/* ============================================
   II. PROGRAMS
   ============================================ */
.programs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  align-items: center;
}

.programs-image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: 2px;
}

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

/* ============================================
   III. THE ARCHIVE
   ============================================ */
.archive-bg {
  background-image: url('../assets/background/vlcsnap-2011-01-17-16h36m26s73.png');
  background-position: center;
}

/* ============================================
   IV. FILMOGRAPHY
   ============================================ */
.filmography {
  background: var(--color-bg-mid);
}

.film-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  align-items: center;
}

.film-card:last-child {
  margin-bottom: 0;
}

.film-visual {
  position: relative;
  overflow: hidden;
  border-radius: 2px;
}

.film-still {
  width: 100%;
  height: auto;
  display: block;
  transition: opacity 0.6s ease;
}

.film-poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: var(--color-bg);
  opacity: 0;
  transition: opacity 0.6s ease;
}

.film-visual:hover .film-still {
  opacity: 0;
}

.film-visual:hover .film-poster {
  opacity: 1;
}

.film-info {
  padding: var(--space-xs) 0;
}

.film-title {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: clamp(1.4rem, 1.2rem + 0.8vw, 2rem);
  letter-spacing: 0.02em;
  margin-bottom: 0.25rem;
}

.film-year {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
  display: block;
}

.film-card.text-only {
  max-width: var(--max-text);
  margin-left: auto;
  margin-right: auto;
  display: block;
}

.film-card.text-only .film-info {
  text-align: center;
}

.docs-bg {
  background-image: url('../assets/background/MV5BODhjNzU4NjYtNzlkMi00ZmU3LTkzN2EtOGNhZTlkZDcyMTQ1XkEyXkFqcGdeQXRyYW5zY29kZS13b3JrZmxvdw@@._V1_.jpg');
  background-position: center 40%;
}

/* ============================================
   V. DOCUMENTARIES
   ============================================ */
.docs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.docs-grid h3 {
  color: var(--color-accent);
  font-size: clamp(1.1rem, 1rem + 0.5vw, 1.4rem);
  margin-bottom: var(--space-xs);
}

.docs-grid p {
  color: var(--color-text-muted);
  font-style: normal;
  font-family: var(--font-body);
  line-height: 1.9;
}

/* ============================================
   VI. CINEMATOGRAPHY
   ============================================ */
.cine-bg {
  background-image: url('../assets/background/punwx0S4V2MiGeQwYF3lYhXk4n0.webp');
  background-position: center;
}

/* ============================================
   VII. INSTITUTIONAL LEADERSHIP
   ============================================ */
.institutional-bg {
  background-image: url('../assets/images/shaji-portrait-iffi.jpg');
  background-position: left center;
  background-size: contain;
  background-color: var(--color-bg);
}

.cine-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.cine-grid h3 {
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.cine-grid em {
  font-family: var(--font-accent);
}

/* ============================================
   VII. LIVING LEGACY
   ============================================ */
.legacy {
  position: relative;
  text-align: center;
  overflow: hidden;
  padding: var(--space-xl) 0;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.legacy-bg {
  position: absolute;
  inset: 0;
  background: url('../assets/achan_candid_shot.JPG') right center / contain no-repeat;
  background-color: #0a0a0a;
}

.legacy-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.25);
}

.legacy-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-text);
  margin: 0 auto;
}

.legacy-content p {
  font-family: var(--font-accent);
  font-size: clamp(1.15rem, 1rem + 0.5vw, 1.45rem);
  line-height: 1.8;
  font-style: italic;
  font-weight: 400;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--color-bg);
  padding: var(--space-md) 0 var(--space-sm);
  text-align: center;
  border-top: 1px solid rgba(201, 168, 76, 0.15);
}

.footer-logo {
  width: 120px;
  height: auto;
  margin: 0 auto var(--space-xs);
  opacity: 0.85;
}

.footer-name {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.footer-address {
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-weight: 300;
  line-height: 1.8;
  margin-bottom: var(--space-sm);
}

.footer-copy {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  opacity: 0.6;
}

/* ============================================
   RESPONSIVE — Tablet (768px+)
   ============================================ */
@media (min-width: 768px) {
  .hamburger { display: none; }

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

  .film-card {
    grid-template-columns: 1.2fr 1fr;
  }

  .film-card:nth-child(even) {
    grid-template-columns: 1fr 1.2fr;
  }

  .film-card:nth-child(even) .film-visual {
    order: 2;
  }

  .film-card:nth-child(even) .film-info {
    order: 1;
    text-align: right;
  }

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

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

/* ============================================
   RESPONSIVE — Desktop (1024px+)
   ============================================ */
@media (min-width: 1024px) {
  .section {
    padding: var(--space-xl) 0;
  }

  .film-card {
    gap: var(--space-md);
  }
}

/* ============================================
   RESPONSIVE — Mobile (<768px)
   ============================================ */
@media (max-width: 767px) {
  .nav-links {
    display: none;
  }

  .hamburger {
    display: block;
  }

  .hero-bg {
    background-attachment: scroll;
  }

  .hero-logo {
    width: 140px;
  }

  .section-number {
    font-size: clamp(3rem, 2rem + 4vw, 5rem);
  }
}

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  body {
    animation: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .scroll-cue {
    animation: none;
  }

  .film-still,
  .film-poster {
    transition: none;
  }

  .carousel-track {
    transition: none;
  }

  html {
    scroll-behavior: auto;
  }
}

/* --- Triangle Decorative Positions --- */
.triangle-tl {
  top: 2rem;
  left: -2rem;
  width: clamp(150px, 20vw, 300px);
  height: clamp(150px, 20vw, 300px);
}

.triangle-br {
  bottom: 2rem;
  right: -2rem;
  width: clamp(120px, 15vw, 250px);
  height: clamp(120px, 15vw, 250px);
}

.triangle-center {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: clamp(200px, 30vw, 500px);
  height: clamp(200px, 30vw, 500px);
  opacity: 0.03;
}

/* Footer triangles */
.footer-triangles {
  position: relative;
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: var(--space-sm);
  opacity: 0.3;
}

.footer-triangles svg {
  width: 12px;
  height: 12px;
}

/* Rain lines decoration (from logo motif) */
.rain-accent {
  position: absolute;
  top: 0;
  right: 5%;
  width: 120px;
  height: 100px;
  opacity: 0.05;
  pointer-events: none;
  z-index: 0;
}

/* --- Image Carousel --- */
.carousel {
  position: relative;
  overflow: hidden;
  margin-top: var(--space-sm);
  padding: 0 2.5rem;
}

.carousel-track {
  display: flex;
  gap: 8px;
  transition: transform 0.6s ease;
}

.carousel-slide {
  min-width: calc((100% - 16px) / 3);
  flex-shrink: 0;
  background: #f0ece4;
  padding: 8px 8px 24px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.carousel-slide img {
  display: block;
  width: 100%;
  height: 220px;
  object-fit: cover;
  opacity: 0.9;
  transition: opacity 0.4s ease;
}

.carousel-slide img:hover {
  opacity: 1;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(10, 10, 10, 0.7);
  color: var(--color-accent);
  border: 1px solid var(--color-divider);
  font-size: 1.8rem;
  line-height: 1;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  z-index: 2;
  transition: background var(--transition), opacity var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-btn:hover {
  background: rgba(201, 168, 76, 0.2);
}

.carousel-btn--prev {
  left: 0;
}

.carousel-btn--next {
  right: 0;
}

@media (max-width: 767px) {
  .carousel-slide {
    min-width: calc(100% - 0px);
  }

  .carousel-slide img {
    height: 200px;
  }

  .carousel {
    padding: 0 2rem;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .carousel-slide {
    min-width: calc((100% - 8px) / 2);
  }
}

@media (min-width: 1024px) {
  .carousel-slide img {
    height: 280px;
  }
}

/* --- Focus Styles --- */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}