/* ============================================
   ABN STUDIO — LANDING PAGE
   ============================================ */

/* RESET & CUSTOM PROPERTIES */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Brand */
  --orange: #f77e2b;
  --orange-light: #ff9a4d;
  --orange-glow: rgba(247, 126, 43, 0.12);
  --orange-deep: #c44a10;
  --crimson: #8b2500;

  /* Neutrals */
  --dark: #0a0604;
  --dark-warm: #0e0906;
  --surface: #1a1410;
  --surface-light: #231c16;
  --ash: #f9f7f2;
  --ash-mid: rgba(249, 247, 242, 0.65);
  --ash-dim: rgba(249, 247, 242, 0.4);
  --ash-faint: rgba(249, 247, 242, 0.08);

  /* Typography */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Layout */
  --section-pad: clamp(80px, 12vh, 160px);
  --gutter: clamp(24px, 5vw, 80px);

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.76, 0, 0.24, 1);
}

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

body {
  font-family: var(--font);
  background: var(--dark);
  color: var(--ash);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--orange);
  color: var(--dark);
}

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

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

/* Scrollbar */
::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: var(--dark); }
::-webkit-scrollbar-thumb { background: var(--orange-deep); border-radius: 2px; }

/* ============================================
   GRAIN OVERLAY
   ============================================ */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px;
}

/* ============================================
   REVEAL ANIMATIONS
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}

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

.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }
.reveal-d4 { transition-delay: 0.4s; }
.reveal-d5 { transition-delay: 0.5s; }

/* ============================================
   KEYFRAMES
   ============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes heroGradient {
  0%, 100% {
    background-position: 25% 25%, 45% 30%, 65% 55%, 80% 75%, 35% 85%, 0% 0%;
  }
  20% {
    background-position: 35% 15%, 55% 40%, 75% 45%, 70% 85%, 25% 75%, 0% 0%;
  }
  40% {
    background-position: 20% 35%, 40% 25%, 60% 65%, 85% 70%, 45% 90%, 0% 0%;
  }
  60% {
    background-position: 30% 20%, 50% 50%, 70% 50%, 75% 80%, 30% 80%, 0% 0%;
  }
  80% {
    background-position: 40% 30%, 60% 35%, 55% 60%, 80% 65%, 40% 85%, 0% 0%;
  }
}

@keyframes heroPulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.08); }
}

@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 28px var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.5s ease, backdrop-filter 0.5s ease, padding 0.5s ease;
}

.nav.scrolled {
  background: rgba(10, 6, 4, 0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding-top: 16px;
  padding-bottom: 16px;
}

.nav-logo img {
  height: 30px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-link {
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 2px;
  transition: color 0.3s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--orange);
  transition: width 0.5s var(--ease-out);
}

.nav-link:hover { color: var(--orange); }
.nav-link:hover::after { width: 100%; }

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

.hero-gradient {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.hero-logo {
  width: clamp(200px, 28vw, 360px);
  height: auto;
  opacity: 0;
  animation: fadeInUp 1.4s var(--ease-out) 0.4s forwards;
  filter: drop-shadow(0 0 60px rgba(247, 126, 43, 0.15));
}

.hero-tagline {
  font-size: clamp(0.78rem, 1.1vw, 1rem);
  font-weight: 200;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--ash-dim);
  opacity: 0;
  animation: fadeInUp 1.4s var(--ease-out) 0.7s forwards;
}

/* Bottom bar */
.hero-bottom {
  position: absolute;
  bottom: 36px;
  left: var(--gutter);
  right: var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  z-index: 2;
  opacity: 0;
  animation: fadeIn 1.4s var(--ease-out) 1.2s forwards;
}

.hero-bottom-left,
.hero-bottom-right {
  font-size: 0.62rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ash-dim);
}

.hero-bottom-center {
  font-size: 0.6rem;
  font-weight: 300;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--ash-dim);
}

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  opacity: 0;
  animation: fadeIn 1.2s var(--ease-out) 1.8s forwards;
}

.hero-scroll-line {
  width: 1px;
  height: 36px;
  background: var(--ash-dim);
  animation: scrollLine 2.4s ease-in-out infinite;
}

/* ============================================
   SECTION COMMON
   ============================================ */
.section-label {
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 56px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--ash-faint);
}

/* ============================================
   SERVICES
   ============================================ */
.services {
  background: var(--dark);
  padding: var(--section-pad) 0;
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
}

.service-item {
  padding: 44px 0;
  border-top: 1px solid var(--ash-faint);
  display: grid;
  grid-template-columns: 56px 1fr 1.2fr;
  gap: 24px;
  align-items: start;
  cursor: default;
  transition: background 0.5s ease, padding-left 0.5s var(--ease-out);
}

.service-item:last-child {
  border-bottom: 1px solid var(--ash-faint);
}

.service-item:hover {
  background: var(--orange-glow);
  padding-left: 20px;
}

.service-num {
  font-size: 0.7rem;
  font-weight: 300;
  color: var(--ash-dim);
  letter-spacing: 0.08em;
  padding-top: 6px;
  font-variant-numeric: tabular-nums;
}

.service-title {
  font-size: clamp(1.4rem, 2.8vw, 2.4rem);
  font-weight: 300;
  letter-spacing: -0.01em;
  line-height: 1.2;
  transition: color 0.35s ease;
}

.service-item:hover .service-title {
  color: var(--orange);
}

.service-desc {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--ash-dim);
  line-height: 1.7;
  max-width: 320px;
  padding-top: 8px;
}

/* ============================================
   WORK / PORTFOLIO
   ============================================ */
.work {
  background: var(--dark-warm);
  padding: var(--section-pad) 0;
}

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

.work-card {
  position: relative;
  overflow: hidden;
  border-radius: 6px;
  aspect-ratio: 16 / 11;
  cursor: pointer;
}

.work-card-bg {
  position: absolute;
  inset: 0;
  transition: transform 0.9s var(--ease-out);
}

.work-card-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.work-card:hover .work-card-bg {
  transform: scale(1.06);
}

.work-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 6, 4, 0.85) 0%, transparent 55%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  opacity: 0;
  transition: opacity 0.5s ease;
}

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

.work-card-name {
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.work-card-cat {
  font-size: 0.62rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange);
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
  background: var(--dark);
  padding: var(--section-pad) 0;
  padding-bottom: calc(var(--section-pad) * 0.6);
  text-align: center;
}

.contact-heading {
  font-size: clamp(2rem, 5vw, 4.2rem);
  font-weight: 200;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 48px;
}

.contact-heading em {
  font-style: normal;
  color: var(--orange);
}

.contact-email {
  display: inline-block;
  font-size: clamp(0.95rem, 1.8vw, 1.5rem);
  font-weight: 300;
  letter-spacing: 0.08em;
  padding: 12px 0;
  position: relative;
  transition: color 0.3s ease;
}

.contact-email::after {
  content: '';
  position: absolute;
  bottom: 8px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.6s var(--ease-out);
}

.contact-email:hover {
  color: var(--orange);
}

.contact-email:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.contact-social {
  margin-top: 48px;
  display: flex;
  justify-content: center;
  gap: 10px;
  align-items: center;
}

.contact-social span {
  font-size: 0.7rem;
  font-weight: 300;
  color: var(--ash-dim);
  letter-spacing: 0.08em;
}

.contact-social a {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  transition: color 0.3s ease;
}

.contact-social a:hover {
  color: var(--orange);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--dark);
  padding: 32px var(--gutter);
  border-top: 1px solid var(--ash-faint);
}

.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-logo img {
  height: 22px;
  width: auto;
  opacity: 0.4;
  transition: opacity 0.3s ease;
}

.footer-logo:hover img {
  opacity: 0.9;
}

.footer-copy {
  font-size: 0.65rem;
  font-weight: 300;
  color: var(--ash-dim);
  letter-spacing: 0.08em;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .service-item {
    grid-template-columns: 40px 1fr;
    gap: 12px;
  }

  .service-desc {
    grid-column: 2;
    max-width: none;
  }

  .work-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .hero-bottom-center {
    display: none;
  }
}

@media (max-width: 600px) {
  .hero-bottom {
    flex-direction: column;
    gap: 6px;
    align-items: flex-start;
  }

  .hero-bottom-right {
    display: none;
  }

  .nav {
    padding: 16px var(--gutter);
  }

  .nav-links {
    gap: 20px;
  }

  .contact-heading {
    font-size: 1.7rem;
  }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .work-card {
    aspect-ratio: 16 / 10;
  }

  .service-item:hover {
    padding-left: 12px;
  }
}