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

:root {
  /* Mirrors src/tokens/colors.js themes.dark */
  --bg-primary: #0f1114;
  --bg-secondary: #0c0c10;
  --bg-tertiary: #16161c;
  --text-primary: #ffffff;
  --text-secondary: #9a9aa4;
  --text-tertiary: #8a8a94;
  --border-primary: #3a3a44;
  --border-secondary: #4a4a54;

  /* Accents — used sparingly, semantic */
  --teal: #2dd4bf;
  --violet: #a78bfa;
  --emerald: #34d399;
  --red: #ff3b30;
  --blue: #0080fe;

  /* Project accent rotation — one per project page */
  --p1-accent: var(--teal);
  --p2-accent: var(--violet);
  --p3-accent: var(--emerald);
  --p4-accent: var(--blue);

  --radius: 10px;
  --radius-sm: 6px;

  --mono: "Space Mono", "SF Mono", "Consolas", monospace;
}

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

body {
  font-family: var(--mono);
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  -webkit-font-smoothing: antialiased;
  font-weight: 400;
  letter-spacing: -0.01em;
}

/* === Progress Bar === */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--text-primary);
  z-index: 100;
  transition: width 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  width: 14.28%;
}

/* === Navigation === */
.slide-nav {
  position: fixed;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 1.25rem;
  z-index: 50;
  background: rgba(15, 17, 20, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 0.55rem 1.1rem;
  border-radius: 100px;
  border: 1px solid var(--border-primary);
}

.nav-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-family: var(--mono);
  font-size: 1rem;
  cursor: pointer;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  transition:
    color 0.2s,
    background 0.2s;
}

.nav-btn:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.slide-counter {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  min-width: 3.5rem;
  text-align: center;
  letter-spacing: 0.05em;
}

/* === Slides === */
.slide {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  transform: translateY(16px);
}

.slide.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.slide-content {
  max-width: 1080px;
  width: 100%;
  padding: 2rem 3rem;
}

/* === Typography === */
h1 {
  font-size: 4rem;
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

h2 {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

h3 {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

p {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.overline {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-tertiary);
  margin-bottom: 1.25rem;
}

.subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-top: 1.25rem;
  max-width: 640px;
  line-height: 1.6;
}

/* === Brand mark — squiggly underline on a single phrase ===
   Used once per slide as a subtle Studio Typo identifier. */
.squiggly {
  text-decoration: underline wavy var(--red);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 6px;
}

/* === Hero slide === */
.hero-slide {
  text-align: left;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-mark {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 3rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.hero-mark::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red);
  display: inline-block;
}

.hero-title {
  font-size: 5rem;
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.045em;
  margin-bottom: 1.5rem;
}

.hero-tagline {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.55;
}

.hero-meta {
  margin-top: 3.5rem;
  display: flex;
  gap: 2.5rem;
  font-size: 0.78rem;
  color: var(--text-tertiary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero-meta span strong {
  display: block;
  color: var(--text-primary);
  font-weight: 400;
  font-size: 0.9rem;
  letter-spacing: -0.01em;
  text-transform: none;
  margin-top: 0.25rem;
}

/* === Team slide === */
.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.team-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  transition: border-color 0.3s;
}

.team-card:hover {
  border-color: var(--border-secondary);
}

.team-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  flex-shrink: 0;
  letter-spacing: 0;
}

.team-info h3 {
  font-size: 1rem;
  margin-bottom: 0.2rem;
}

.team-role {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-tertiary);
  margin-bottom: 0.6rem;
}

.team-credit {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* === Project slide === */
.project-slide .slide-content {
  max-width: 1180px;
}

.project-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3rem;
  align-items: center;
  margin-top: 2rem;
}

.project-copy .overline {
  margin-bottom: 0.9rem;
}

.project-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-primary);
  background: transparent;
  border: 1px solid var(--border-primary);
  padding: 0.3rem 0.7rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.project-slide h2 {
  margin-bottom: 1.25rem;
}

.project-copy p {
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 0.85rem;
}

.project-copy p:last-of-type {
  margin-bottom: 0;
}

.project-meta {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-primary);
  display: flex;
  gap: 2rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
}

.project-meta span strong {
  display: block;
  color: var(--text-primary);
  font-weight: 400;
  font-size: 0.85rem;
  letter-spacing: -0.01em;
  text-transform: none;
  margin-top: 0.3rem;
}

/* === Video card — progressive enhancement: poster first === */
.video-card {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  transition: border-color 0.3s;
}

.video-card:hover {
  border-color: var(--border-secondary);
}

.video-card video,
.video-card iframe {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  border: 0;
}

.video-card.no-source::before {
  content: "Video placeholder";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-tertiary);
}

.project-accent-bar {
  width: 32px;
  height: 2px;
  background: var(--project-accent, var(--text-primary));
  margin-bottom: 1.5rem;
}

/* Per-project accent application */
.slide[data-project="1"] {
  --project-accent: var(--p1-accent);
}
.slide[data-project="2"] {
  --project-accent: var(--p2-accent);
}
.slide[data-project="3"] {
  --project-accent: var(--p3-accent);
}
.slide[data-project="4"] {
  --project-accent: var(--p4-accent);
}

.slide[data-project] .project-tag {
  color: var(--project-accent);
  border-color: var(--project-accent);
}

/* === Thank you slide === */
.thanks-slide {
  text-align: left;
}

.thanks-slide h2 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.thanks-slide .overline {
  margin-bottom: 2rem;
}

.contact-row {
  margin-top: 3rem;
  display: flex;
  gap: 2.5rem;
  font-size: 0.78rem;
  color: var(--text-tertiary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.contact-row a {
  display: block;
  color: var(--text-primary);
  font-weight: 400;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  text-transform: none;
  margin-top: 0.3rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.contact-row a:hover {
  border-bottom-color: var(--text-primary);
}

.thanks-restart {
  margin-top: 3.5rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-tertiary);
}

/* === Animations === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide.active .slide-content > * {
  animation: fadeInUp 0.55s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.slide.active .slide-content > *:nth-child(1) {
  animation-delay: 0s;
}
.slide.active .slide-content > *:nth-child(2) {
  animation-delay: 0.06s;
}
.slide.active .slide-content > *:nth-child(3) {
  animation-delay: 0.12s;
}
.slide.active .slide-content > *:nth-child(4) {
  animation-delay: 0.18s;
}
.slide.active .slide-content > *:nth-child(5) {
  animation-delay: 0.24s;
}
.slide.active .slide-content > *:nth-child(6) {
  animation-delay: 0.3s;
}

/* === Responsive === */
@media (max-width: 900px) {
  .slide {
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    align-items: flex-start;
  }

  .slide-content {
    padding: 3.5rem 1.25rem 6rem;
    max-width: 100%;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-tagline {
    font-size: 1rem;
  }

  .hero-meta,
  .contact-row {
    flex-direction: column;
    gap: 1.25rem;
    margin-top: 2.5rem;
  }

  h1 {
    font-size: 2.2rem;
  }
  h2 {
    font-size: 1.65rem;
  }

  .thanks-slide h2 {
    font-size: 2.2rem;
  }

  .team-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
    margin-top: 1.5rem;
  }

  .team-card {
    padding: 1.25rem;
  }

  .project-layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
  }

  .project-meta {
    flex-direction: column;
    gap: 0.75rem;
  }

  .slide-nav {
    bottom: 1rem;
    padding: 0.45rem 0.95rem;
    gap: 0.9rem;
  }
}