:root {
  /* Minimalist black and white/ neutral palette */
  --bg-color: #000000;
  --text-color: #ffffff;
  --muted-text: #ffffff;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Enable smooth scrolling across anchor jumps */
html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
}

/* Fixed Header — Top Left */
.top-header {
  position: fixed;
  top: 2rem;
  left: 2rem;
  z-index: 20;
}

.logo {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Fixed Navigation Bar — Top Right */
.top-nav {
  position: fixed;
  top: 2rem;
  right: 2rem;
  z-index: 20;
}

.top-nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.top-nav a {
  text-decoration: none;
  color: var(--muted-text);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  transition: color 0.2s ease;
}

.top-nav a:hover {
  color: var(--text-color);
}

/* Enlarged Introduction Section (Hero) */
.hero-intro {
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 2rem 4rem;
}

.hero-content {
  max-width: 680px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-content h2 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.hero-lead {
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  line-height: 1.5;
  color: var(--text-color);
  font-weight: 400;
}

.hero-body {
  font-size: 0.95rem;
  color: var(--muted-text);
  line-height: 1.7;
}

/* Main Gallery Area */
.gallery-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10rem;
  padding: 4rem 2rem 8rem;
}

/* Offset for jumping directly to Sketch 1 below fixed header */
#sketch-1 {
  scroll-margin-top: 6rem;
}

/* Dynamic Scroll Cards */
.sketch-card {
  width: min(80vw, 700px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;

  /* Native CSS Scroll Animation */
  animation: scale-in-out linear both;
  animation-timeline: view();
  animation-range: entry 0% cover 50%;
}

.sketch-card img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);

  /* Prevent dragging and highlighting */
  -webkit-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
}

.sketch-card figcaption {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted-text);
}

@keyframes scale-in-out {
  0% {
    transform: scale(0.85);
    opacity: 0.35;
  }

  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Bottom Container — About & Contact */
.footer-container {
  max-width: 850px;
  margin: 0 auto;
  padding: 6rem 2rem 10rem;
  display: flex;
  flex-direction: column;
  gap: 6rem;
}

/* General Page Sections */
.page-section {
  scroll-margin-top: 6rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.page-section h3 {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.page-section p {
  font-size: 0.9rem;
  color: var(--muted-text);
}

/* About Section — Text Only */
.about-section {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Contact Link */
.email-link {
  color: var(--text-color);
  font-size: 0.9rem;
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* Copyright Notice */
.copyright-notice {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-align: center;
}

.copyright-notice p {
  font-size: 0.8rem;
  color: var(--muted-text);
  letter-spacing: 0.03em;
}

.copyright-subtext {
  font-size: 0.72rem;
  opacity: 0.75;
  max-width: 50ch;
  margin: 0 auto;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .top-header,
  .top-nav {
    top: 1.25rem;
  }

  .top-header {
    left: 1.25rem;
  }

  .top-nav {
    right: 1.25rem;
  }

  .hero-intro {
    min-height: 70vh;
    padding-top: 7rem;
  }

  .footer-container {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
}