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

:root {
  --bg: #1a1a18;
  --text: #e8e4dc;
  --dim: #9a968c;
  --serif: 'EB Garamond', 'Georgia', serif;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--serif);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  min-height: 100dvh; /* dynamic viewport height for mobile */
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

::selection {
  background: rgba(232, 228, 220, 0.2);
}

/* ---------- FULL-SCREEN SUNSET ---------- */
#sunsetCanvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  will-change: transform;  /* GPU layer — keeps scroll smooth */
  z-index: 0;
  pointer-events: none;
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: -webkit-crisp-edges;
}

/* ---------- DARK OVERLAY — text readability ---------- */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(
    105deg,
    rgba(20, 20, 18, 0.92) 0%,
    rgba(20, 20, 18, 0.85) 35%,
    rgba(20, 20, 18, 0.5) 60%,
    rgba(20, 20, 18, 0.15) 80%,
    transparent 100%
  );
}

/* ── Thesis page: hide content until fonts load to prevent FOUT jump ── */
.thesis-page main {
  opacity: 0;
  transition: opacity 0.3s ease;
}
.thesis-page.fonts-ready main {
  opacity: 1;
}

/* ── Thesis page: stronger overlay for readability ── */
.thesis-page .overlay {
  background: linear-gradient(
    105deg,
    rgba(20, 20, 18, 0.93) 0%,
    rgba(20, 20, 18, 0.88) 40%,
    rgba(20, 20, 18, 0.6) 65%,
    rgba(20, 20, 18, 0.25) 85%,
    transparent 100%
  );
}

/* ---------- TOP NAV ---------- */
.top-nav {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 10;
  padding: 28px clamp(20px, 5vw, 60px);
}

.nav-link {
  font-size: 15px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.3s, border-color 0.3s;
  -webkit-tap-highlight-color: transparent;
}

.nav-link:hover,
.nav-link:active {
  color: var(--text);
  border-color: var(--text);
}

/* ---------- MAIN ---------- */
main {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  align-items: center;
  margin-top: -6vh; /* nudge content above the horizon line */
}

/* Content block on the left */
.content-card {
  max-width: 560px;
  width: 100%;
  margin-left: clamp(24px, 8vw, 120px);
  margin-right: 24px;
  padding: 48px 0;
}

/* ---------- THESIS PAGE LAYOUT ---------- */
.thesis-page main {
  align-items: flex-start;
}

.thesis-section {
  padding: 100px 0 120px;
  min-height: 100vh;
  min-height: 100dvh;
}

.thesis-section .content-card {
  max-width: 620px;
}

/* Unified thesis heading */
.thesis-heading {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 400;
  font-style: italic;
  line-height: 1.5;
  margin-bottom: 36px;
  color: var(--text);
}

.thesis-heading.closing {
  margin-top: 48px;
  margin-bottom: 0;
  padding-top: 28px;
  border-top: 1px solid rgba(232, 228, 220, 0.1);
}

/* All thesis body text */
.thesis-text {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 400;
  line-height: 1.75;
  margin-bottom: 20px;
  color: var(--text);
}

.thesis-text.dim {
  color: var(--dim);
}

.thesis-text em {
  font-style: italic;
}

/* ---------- TEXT (landing page) ---------- */
.text {
  font-size: 20px;
  line-height: 1.65;
  margin-bottom: 22px;
  font-weight: 400;
  letter-spacing: 0.01em;
  opacity: 0; /* starts invisible — decode animation reveals */
}

.text em {
  font-style: italic;
  font-weight: 500;
}

.text.secondary {
  color: var(--dim);
}

/* ---------- DETAILS ---------- */
.details {
  margin: 6px 0 22px;
  padding: 14px 16px;
  border-left: 1px solid transparent; /* hidden until animation done */
  transition: border-color 0.5s ease, background-color 0.5s ease;
  background: rgba(10, 10, 8, 0.45);
  border-radius: 4px;
}

.details.revealed,
.thesis-page .details {
  border-left-color: rgba(232, 228, 220, 0.12);
}

.detail {
  font-size: 20px;
  color: var(--dim);
  margin-bottom: 0;
}

/* ---------- LINK ---------- */
.link {
  display: inline-block;
  font-size: 20px;
  font-weight: 400;
  color: var(--text);
  border-bottom: 1px solid transparent; /* hidden until animation done */
  padding-bottom: 1px;
  transition: border-color 0.5s ease;
  opacity: 0;
  -webkit-tap-highlight-color: transparent;
}

.link.revealed {
  border-bottom-color: rgba(232, 228, 220, 0.3);
}

.link.revealed:hover,
.link.revealed:active {
  border-bottom-color: var(--text);
}

/* ---------- CHAR SPANS ---------- */
.ch {
  /* no display:inline-block — prevents layout differences */
}

/* ---------- WAITLIST ---------- */
.waitlist-wrap {
  margin-top: 28px;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.waitlist-wrap.visible {
  opacity: 1;
}

.waitlist-form {
  display: flex;
  gap: 10px;
  max-width: 360px;
}

.waitlist-input {
  flex: 1;
  min-width: 0; /* prevent flex overflow on mobile */
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0; /* remove iOS default rounding */
  color: var(--text);
  font-size: 16px; /* ≥16px prevents iOS auto-zoom */
  font-family: var(--serif);
  outline: none;
  transition: border-color 0.3s;
  -webkit-appearance: none;
  appearance: none;
}

.waitlist-input::placeholder {
  color: var(--dim);
}

.waitlist-input:focus {
  border-color: rgba(255, 255, 255, 0.25);
}

.waitlist-btn {
  padding: 10px 20px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0;
  color: var(--text);
  font-size: 16px;
  font-family: var(--serif);
  cursor: pointer;
  transition: border-color 0.3s;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  -webkit-appearance: none;
  appearance: none;
}

.waitlist-btn:hover,
.waitlist-btn:active {
  border-color: rgba(255, 255, 255, 0.3);
}

.waitlist-success {
  display: none;
  font-size: 18px;
  color: var(--dim);
  font-style: italic;
}

.waitlist-success.show {
  display: block;
}

/* ---------- FOOTER ---------- */
footer {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  padding: 24px 0 36px;
}

/* ============================================
   RESPONSIVE — Tablets (≤ 900px)
   ============================================ */
@media (max-width: 900px) {
  .content-card {
    max-width: 480px;
  }
  .thesis-section .content-card {
    max-width: 520px;
  }
}

/* ============================================
   RESPONSIVE — Mobile (≤ 600px)
   ============================================ */
@media (max-width: 600px) {
  .top-nav {
    padding: 16px 20px;
  }

  .nav-link {
    font-size: 13px;
  }

  main {
    align-items: flex-start;
  }

  .content-card {
    margin-left: 28px;
    margin-right: 28px;
    padding: 80px 0 36px; /* top padding to clear fixed nav */
    max-width: 100%;
  }

  .thesis-section {
    padding: 80px 0 60px;
  }

  .thesis-section .content-card {
    max-width: 100%;
    padding-top: 0;
  }

  .text,
  .detail,
  .link,
  .thesis-text,
  .thesis-heading {
    font-size: 17px;
  }

  .thesis-heading.closing {
    margin-top: 32px;
    padding-top: 20px;
  }

  .thesis-text {
    line-height: 1.65;
    margin-bottom: 16px;
  }

  .thesis-heading {
    margin-bottom: 24px;
  }

  .text {
    line-height: 1.6;
    margin-bottom: 18px;
  }

  .details {
    margin: 4px 0 18px;
    padding-left: 12px;
    background: none;
    border-radius: 0;
    padding: 0 0 0 12px;
  }

  .waitlist-form {
    flex-direction: column;
    max-width: 100%;
  }

  .waitlist-btn {
    padding: 12px 20px;
  }

  .waitlist-input {
    padding: 12px 14px;
  }

  /* On mobile, overlay is more uniform for readability */
  .overlay {
    background: linear-gradient(
      180deg,
      rgba(20, 20, 18, 0.92) 0%,
      rgba(20, 20, 18, 0.8) 40%,
      rgba(20, 20, 18, 0.55) 70%,
      rgba(20, 20, 18, 0.3) 100%
    );
  }

  .thesis-page .overlay {
    background: linear-gradient(
      180deg,
      rgba(20, 20, 18, 0.93) 0%,
      rgba(20, 20, 18, 0.85) 40%,
      rgba(20, 20, 18, 0.6) 70%,
      rgba(20, 20, 18, 0.35) 100%
    );
  }
}

/* ============================================
   RESPONSIVE — Small phones (≤ 380px)
   ============================================ */
@media (max-width: 380px) {
  .content-card {
    margin-left: 16px;
    margin-right: 16px;
  }

  .text,
  .detail,
  .link,
  .thesis-text,
  .thesis-heading {
    font-size: 16px;
  }
}

/* ============================================
   PREFERS REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  #sunsetCanvas { display: none; }
  .overlay {
    background: rgba(20, 20, 18, 0.95);
  }
  .text,
  .link {
    opacity: 1 !important;
  }
  .waitlist-wrap {
    opacity: 1 !important;
  }
}