:root {
  --background: #080808;
  --text: #f4f1ea;
  --muted-text: rgba(244, 241, 234, 0.68);
  --line: rgba(244, 241, 234, 0.32);
  --fire: #ff6a00;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
}

.landing-page {
  position: relative;
  display: flex;
  min-height: 100svh;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  isolation: isolate;
}

/* Background video layers */
.flame-video,
.video-overlay,
.grain {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.flame-video {
  z-index: -3;
  object-fit: cover;
  filter: saturate(1.1) contrast(1.08);
}

.video-overlay {
  z-index: -2;
  background:
    linear-gradient(
      90deg,
      rgba(0, 0, 0, 0.78) 0%,
      rgba(0, 0, 0, 0.26) 50%,
      rgba(0, 0, 0, 0.72) 100%
    ),
    linear-gradient(
      0deg,
      rgba(0, 0, 0, 0.72) 0%,
      rgba(0, 0, 0, 0.08) 55%,
      rgba(0, 0, 0, 0.45) 100%
    );
}

.grain {
  z-index: -1;
  opacity: 0.12;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='1.1' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='.7'/%3E%3C/svg%3E");
}

/* Hero */
.hero {
  width: min(80%, 1050px);
  text-align: center;
  animation: reveal 1.2s ease both;
}

.hero-label,
.hero-subtitle,
.section-number {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-label {
  margin-bottom: 1.8rem;
  color: var(--muted-text);
}

.hero h1 {
  margin: 0;
  font-size: clamp(4.8rem, 15vw, 13.5rem);
  font-weight: 600;
  line-height: 0.76;
  letter-spacing: -0.1em;
  text-transform: uppercase;
}

.hero h1 span {
  display: block;
}

.hero h1 span:last-child {
  margin-left: 0.16em;
}

.hero-subtitle {
  max-width: 320px;
  margin: 2.5rem auto 0;
  color: var(--muted-text);
  line-height: 1.6;
  letter-spacing: 0.08em;
}

/* Side navigation */
.side-link {
  position: absolute;
  top: 50%;
  z-index: 2;
  color: var(--text);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 250ms ease, letter-spacing 250ms ease;
}

.side-link:hover,
.side-link:focus-visible {
  color: var(--fire);
  letter-spacing: 0.32em;
  outline: none;
}

.side-link-left {
  left: 2.2rem;
  transform: translateY(-50%) rotate(-90deg);
}

.side-link-right {
  right: 2.2rem;
  transform: translateY(-50%) rotate(90deg);
}

/* Social links */
.social-links {
  position: absolute;
  bottom: 2rem;
  left: 2.2rem;
  display: flex;
  gap: 1.25rem;
}

.social-links a {
  color: var(--muted-text);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 250ms ease;
}

.social-links a:hover,
.social-links a:focus-visible {
  color: var(--fire);
  outline: none;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  right: 2.2rem;
  bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--muted-text);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.scroll-indicator span {
  width: 2.8rem;
  height: 1px;
  background: var(--text);
  animation: pulse 1.8s ease-in-out infinite;
}

/* General content sections */
.content-section {
  min-height: 100svh;
  padding: 8rem clamp(1.5rem, 8vw, 8rem);
  background: var(--background);
}

.section-number {
  color: var(--fire);
}

.content-section h2 {
  margin: 1.2rem 0 4rem;
  font-size: clamp(3rem, 7vw, 7.5rem);
  font-weight: 500;
  line-height: 0.9;
  letter-spacing: -0.08em;
}

/* Selected work */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}

/*
  Works for both:
  <a class="project-card">...</a>
  <article class="project-card">...</article>
*/
.project-card {
  display: flex;
  min-height: 310px;
  flex-direction: column;
  padding: 1.5rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  transition:
    background 250ms ease,
    color 250ms ease,
    transform 250ms ease;
}

.project-card:first-child {
  border-left: 1px solid var(--line);
}

.project-card:hover,
.project-card:focus-visible {
  background: var(--fire);
  color: var(--background);
  outline: none;
  transform: translateY(-4px);
}

.project-card:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: -5px;
}

.project-card p,
.project-card span {
  margin: 0;
  color: var(--muted-text);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 250ms ease;
}

.project-card h3 {
  margin: auto 0 1.5rem;
  color: inherit;
  font-size: 1.8rem;
  font-weight: 500;
  letter-spacing: -0.05em;
}

.project-card:hover p,
.project-card:hover span,
.project-card:focus-visible p,
.project-card:focus-visible span {
  color: var(--background);
}

/* Contact */
.contact-section {
  border-top: 1px solid var(--line);
}

.email-link {
  display: inline-block;
  color: var(--text);
  font-size: clamp(1.3rem, 3vw, 3rem);
  text-decoration: none;
  border-bottom: 1px solid var(--fire);
  transition: color 250ms ease, border-color 250ms ease;
}

.email-link:hover,
.email-link:focus-visible {
  color: var(--fire);
  outline: none;
}

/* Animations */
@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.35;
    transform: scaleX(0.7);
    transform-origin: right;
  }

  50% {
    opacity: 1;
    transform: scaleX(1);
    transform-origin: right;
  }
}

/* Mobile layout */
@media (max-width: 700px) {
  .side-link-left {
    left: 0.8rem;
  }

  .side-link-right {
    right: 0.8rem;
  }

  .social-links {
    bottom: 1.2rem;
    left: 1.2rem;
    gap: 0.8rem;
  }

  .scroll-indicator {
    display: none;
  }

  .content-section {
    padding-top: 6rem;
    padding-bottom: 6rem;
  }

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

  .project-card,
  .project-card:first-child {
    border-left: 1px solid var(--line);
  }

  .project-card {
    min-height: 210px;
  }

  .project-card h3 {
    margin-bottom: 1rem;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}