:root {
  --paper: #f7edcf;
  --paper-2: #ead8aa;
  --ink: #34281e;
  --shadow: rgba(37, 18, 5, .42);
  --red: #8f2f2f;
  --blue: #315d70;
  --gold: #73602f;
  --purple: #4f3b66;
}

* { box-sizing: border-box; }

html {
  height: 100%;
  background: #9d714d url("assets/studio.jpg") center center / cover no-repeat fixed;
  overflow:hidden;
}

body {
  margin: 0;
  height: 100vh;
  color: var(--ink);
  font-family: "Libre Baskerville", Georgia, serif;
  overflow:hidden;
  background: transparent;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 26% 18%, rgba(255,255,255,.19), transparent 28%),
    radial-gradient(circle at 80% 70%, rgba(0,0,0,.24), transparent 38%),
    rgba(48, 24, 7, .14);
}

.desk {
  position: relative;
  height: 100vh;
  padding: 5vh 5vw 4vh;
  display: grid;
  grid-template-columns: 50% 38%;
  align-items: center;
  gap: 3vw;
}

.cover-card {
  width:100%;
  height:95vh;
  max-width:700px;
  justify-self: center;
  padding: clamp(18px, 2.1vw, 32px);
  transform: rotate(5deg);
  filter: drop-shadow(18px 24px 24px var(--shadow));
}

.cover-frame{
    width:100%;
    height:100%;
    overflow:visible;
    background:transparent;
    border:none;
    box-shadow:none;
}

.cover-frame img{
    width:100%;
    height:100%;
    object-fit:contain;
    display:block;
}

.cover-fallback{
    display:none;
}

.notes-area {
  justify-self: end;
  width:100%;
  max-width:620px;
}

.paper-stack {
  position: relative;
  height:78vh;
  transform: rotate(-4deg);
  filter: drop-shadow(18px 24px 24px rgba(40, 20, 5, .45));
}

.paper-stack::before,
.paper-stack::after {
  content: "";
  position: absolute;
  inset: 18px 0 0 24px;
  background: var(--paper-2);
  transform: rotate(5deg);
  border-radius: 4px 10px 8px 3px;
  box-shadow: 0 8px 18px rgba(0,0,0,.18);
}

.paper-stack::after {
  inset: 30px -12px -8px 36px;
  transform: rotate(-2deg);
  opacity: .82;
}

.paper {
  position: absolute;
  inset: 0;
  z-index: 2;
  height:78vh;
  padding: clamp(48px, 4.8vw, 78px) clamp(46px, 5.1vw, 82px) 58px;
  background:
    linear-gradient(90deg, rgba(103,70,35,.09) 0 1px, transparent 1px 100%),
    repeating-linear-gradient(0deg, transparent 0 37px, rgba(110, 70, 34, .13) 38px),
    var(--paper);
  border-radius: 4px 10px 9px 3px;
  box-shadow: inset 0 0 40px rgba(92, 58, 18, .18), 0 16px 28px rgba(0,0,0,.22);
  opacity: 0;
  transform: translateX(70px) rotate(10deg) scale(.94);
  transition: opacity .38s ease, transform .55s ease;
  pointer-events: none;
}

.paper.active {
  opacity: 1;
  transform: translateX(0) rotate(0deg) scale(1);
  pointer-events: auto;
}

.paper.flipping-out {
  opacity: 0;
  transform: translateX(-80px) rotate(-12deg) scale(.94);
}

.eyebrow {
  margin: 0 0 22px;
  font-family: "Special Elite", monospace;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: clamp(.85rem, 1vw, 1rem);
}

h1,
h2 {
  margin: 0 0 28px;
  font-family: "Caveat", cursive;
  font-weight: 700;
  line-height: .9;
}

h1 { font-size: clamp(3.2rem, 5.5vw, 7.2rem); }
h2 { font-size: clamp(2.7rem, 4.4vw, 5.4rem); }

p {
  font-size: clamp(1rem, 1.18vw, 1.28rem);
  line-height: 1.7;
}

.lead {
  font-size: clamp(1rem, 1.1vw, 1.20rem);
  max-width: 38rem;
}

.download-button {
  display: inline-block;
  margin-top: 24px;
  padding: 16px 28px;
  color: #fff;
  background: #56361f;
  border-radius: 999px;
  text-decoration: none;
  font-family: "Special Elite", monospace;
  font-size: 1rem;
  box-shadow: 0 8px 0 rgba(49, 28, 14, .35);
  transition: transform .2s ease, box-shadow .2s ease;
}

.download-button:hover {
  transform: translateY(2px);
  box-shadow: 0 6px 0 rgba(49, 28, 14, .35);
}

.bookmark-menu {
  position: fixed;
  top: 20px;
  right: 34px;
  z-index: 10;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.bookmark {
  position: relative;
  min-width: 76px;
  height: 152px;
  padding: 18px 8px 34px;
  color: #fff;
  border: 0;
  cursor: pointer;
  font-family: "Special Elite", monospace;
  writing-mode: vertical-lr;
  text-orientation: upright;
  transform: translateY(-20px) rotate(var(--tilt, 0deg));
  transition: transform .35s ease, filter .35s ease;
  box-shadow: 0 10px 18px rgba(0,0,0,.25);
}

.bookmark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  margin: auto;
  width: 0;
  height: 0;
  border-left: 38px solid transparent;
  border-right: 38px solid transparent;
  border-top: 24px solid currentColor;
  color: inherit;
  filter: brightness(.75);
}

.bookmark:nth-child(1) { background: var(--red); --tilt: -3deg; }
.bookmark:nth-child(2) { background: var(--blue); --tilt: 2deg; }
.bookmark:nth-child(3) { background: var(--gold); --tilt: -1deg; }
.bookmark:nth-child(4) { background: var(--purple); --tilt: 3deg; }

.bookmark:hover,
.bookmark.active {
  transform: translateY(0) rotate(var(--tilt, 0deg));
  filter: brightness(1.08);
}

@media (max-width: 1100px) {
  html, body { overflow-y: auto; height: auto; min-height: 100%; }

  .desk {
    height: auto;
    min-height: 100vh;
    padding: 140px 5vw 60px;
    grid-template-columns: 1fr;
    gap: 70px;
  }

  .cover-card,
  .notes-area {
    width: min(760px, 88vw);
    justify-self: center;
  }

  .cover-card {
    max-width: 520px;
  }
}

@media (max-width: 700px) {
  .desk { padding-top: 150px; }
  .paper-stack { min-height: 600px; }
  .paper { min-height: 600px; }
  .bookmark-menu { right: 14px; gap: 4px; }
  .bookmark { min-width: 62px; height: 118px; font-size: .82rem; }
  .bookmark::after { border-left-width: 31px; border-right-width: 31px; }
}