:root {
  --ink: #241d17;
  --muted: #75695d;
  --ivory: #f3eee5;
  --paper: #fbf8f2;
  --bronze: #9c7a4b;
  --line: rgba(66, 48, 31, 0.18);
  --shadow: 0 24px 60px rgba(40, 30, 20, .14);
}

* { box-sizing: border-box; }
html { background: #d8d0c3; }
body {
  margin: 0;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  background:
    radial-gradient(circle at top, rgba(255,255,255,.72), transparent 34rem),
    linear-gradient(180deg, #e8e1d6, #d6cdbf);
  min-height: 100vh;
}

button, input { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }

.app-shell {
  width: min(1180px, calc(100% - 24px));
  margin: 0 auto;
  padding: 28px 0 60px;
}

.masthead {
  text-align: center;
  padding: 52px 20px 42px;
}
.eyebrow {
  letter-spacing: .34em;
  font-size: .72rem;
  color: var(--bronze);
  font-weight: 700;
}
.masthead h1 {
  margin: 12px 0 8px;
  font-size: clamp(2.8rem, 8vw, 6rem);
  line-height: .92;
  font-weight: 400;
}
.masthead p {
  margin: 18px auto 0;
  max-width: 660px;
  color: var(--muted);
  font-size: 1.05rem;
  letter-spacing: .03em;
}

.panel {
  background: rgba(251, 248, 242, .94);
  border: 1px solid rgba(114, 88, 52, .18);
  box-shadow: var(--shadow);
  margin: 20px 0;
  padding: clamp(22px, 4vw, 42px);
}

.section-heading, .upload-copy {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 24px;
}
.step {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  border: 1px solid var(--bronze);
  color: var(--bronze);
  font-size: .78rem;
  letter-spacing: .12em;
}
h2 {
  margin: 0;
  font-size: clamp(1.45rem, 3vw, 2.2rem);
  font-weight: 400;
}
.section-heading p, .upload-copy p {
  color: var(--muted);
  margin: 7px 0 0;
}

.drop-zone {
  min-height: 180px;
  border: 1px dashed var(--bronze);
  background:
    linear-gradient(rgba(255,255,255,.56), rgba(255,255,255,.56)),
    repeating-linear-gradient(45deg, transparent 0 10px, rgba(156,122,75,.05) 10px 11px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  text-align: center;
  padding: 30px;
}
.drop-zone.dragover { outline: 3px solid rgba(156,122,75,.25); }
.drop-zone input { display: none; }
.drop-title { font-size: 1.35rem; }
.drop-subtitle, .file-status { color: var(--muted); font-size: .9rem; }
.file-status { margin-top: 12px; text-align: center; }

.control-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 24px;
}
.control-grid label {
  display: grid;
  gap: 9px;
  color: var(--muted);
  font-size: .9rem;
  letter-spacing: .04em;
}
.control-grid input[type="text"] {
  width: 100%;
  border: 1px solid var(--line);
  background: #fffdf8;
  padding: 13px 14px;
  color: var(--ink);
  border-radius: 0;
}
.control-grid input[type="range"] {
  width: 100%;
  accent-color: var(--bronze);
}

.preview-panel { position: relative; }
.spread {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items: stretch;
}
.spread.ready { display: grid; }
.magazine-page {
  background: #f8f3ea;
  padding: clamp(14px, 2.2vw, 28px);
  border: 1px solid rgba(79,58,36,.16);
  min-width: 0;
}
.page-kicker {
  font-family: Arial, sans-serif;
  font-size: .62rem;
  letter-spacing: .28em;
  color: var(--bronze);
  margin-bottom: 14px;
}
.magazine-page canvas {
  width: 100%;
  aspect-ratio: 4 / 5;
  background: #1d1b18;
  display: block;
  object-fit: cover;
}
.page-copy { padding: 21px 4px 4px; }
.page-copy h3 {
  margin: 0;
  font-size: clamp(1.1rem, 2.4vw, 2rem);
  font-weight: 400;
  letter-spacing: .06em;
}
.page-copy p {
  margin: 8px 0 0;
  color: var(--muted);
  font-style: italic;
}
.empty-state {
  min-height: 340px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 30px;
  text-align: center;
}
.empty-state.hidden { display: none; }

.resolution-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.resolution {
  border: 1px solid var(--line);
  background: #fffdf8;
  padding: 18px 12px;
  cursor: pointer;
  color: var(--ink);
}
.resolution strong, .resolution span { display: block; }
.resolution strong { font-size: 1.1rem; font-weight: 400; }
.resolution span { margin-top: 6px; color: var(--muted); font-size: .78rem; }
.resolution.active {
  border-color: var(--bronze);
  box-shadow: inset 0 0 0 1px var(--bronze);
  background: #f3eadc;
}

.export-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}
.export-actions button {
  border: 1px solid var(--bronze);
  background: transparent;
  color: var(--ink);
  padding: 13px 18px;
  cursor: pointer;
}
.export-actions .primary {
  background: var(--ink);
  color: #fffaf0;
  border-color: var(--ink);
}
.export-actions button:disabled {
  opacity: .42;
  cursor: not-allowed;
}
.export-note { color: var(--muted); font-size: .85rem; margin: 14px 0 0; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: rgba(36,29,23,.65);
  padding: 24px 4px 0;
  font-size: .78rem;
  letter-spacing: .08em;
}

@media (max-width: 760px) {
  .app-shell { width: min(100% - 14px, 1180px); padding-top: 10px; }
  .masthead { padding: 38px 14px 28px; }
  .panel { padding: 22px 16px; margin: 12px 0; }
  .control-grid, .spread { grid-template-columns: 1fr; }
  .resolution-grid { grid-template-columns: 1fr; }
  .export-actions { display: grid; }
  .export-actions button { width: 100%; }
  footer { flex-direction: column; text-align: center; }
}