:root {
  --bg-1: #f3efe6;
  --bg-2: #e9dfcf;
  --bg-3: #f7f4ee;
  --ink: #1d1a14;
  --ink-soft: #3c352b;
  --accent: #b0562b;
  --accent-2: #2b5d52;
  --card: #fbfaf7;
  --sheet-w: 2834.65px;
  --sheet-h: 2834.65px;
  --cell-w: 280.63px;
  --cell-h: 284.88px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Futura", "Gill Sans", sans-serif;
  color: var(--ink);
  background: radial-gradient(1200px 800px at 10% 10%, #ffffff 0%, var(--bg-1) 35%, var(--bg-2) 80%);
  min-height: 100vh;
}

.backdrop {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(120deg, rgba(255, 255, 255, 0.5), transparent 55%),
    repeating-linear-gradient(45deg, rgba(0, 0, 0, 0.02), rgba(0, 0, 0, 0.02) 2px, transparent 2px, transparent 7px),
    radial-gradient(700px 500px at 85% 20%, rgba(176, 86, 43, 0.15), transparent 60%),
    radial-gradient(600px 600px at 20% 80%, rgba(43, 93, 82, 0.12), transparent 55%);
  mix-blend-mode: multiply;
  opacity: 0.9;
}

.app {
  position: relative;
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 24px 64px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.hero h1 {
  font-family: "Bodoni 72", "Didot", "Times New Roman", serif;
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 600;
  margin: 0;
}

.panel {
  background: var(--card);
  border-radius: 24px;
  padding: 28px;
  box-shadow: 0 24px 60px rgba(29, 26, 20, 0.12);
  border: 1px solid rgba(0, 0, 0, 0.06);
  display: grid;
  gap: 20px;
}

.controls {
  display: grid;
  gap: 16px;
}

.mode-group {
  display: grid;
  gap: 6px;
  max-width: 320px;
}

.mode-group label,
.control-group label {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

select {
  appearance: none;
  border: 1px solid rgba(0, 0, 0, 0.2);
  background: #fff;
  color: var(--ink);
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
}

.mode {
  display: inline-flex;
  border-radius: 999px;
  background: #efe7d8;
  padding: 6px;
  gap: 6px;
}

.mode-btn,
.view-btn {
  appearance: none;
  border: none;
  background: transparent;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.mode-btn[aria-pressed="true"] {
  background: var(--accent);
  color: #fff;
  transform: translateY(-1px);
}

.control-group {
  display: none;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.control-group.is-active {
  display: flex;
}

.design-controls {
  align-items: flex-start;
}

.design-preview {
  display: grid;
  gap: 8px;
  justify-items: center;
}

.design-meta {
  display: grid;
  gap: 6px;
  justify-items: center;
}

.design-toggle {
  font-size: 2.2rem;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.2);
  background: #fff;
  font-family: "Noto Serif CJK SC", "Songti SC", "Hiragino Mincho ProN", serif;
}

.design-info {
  display: none;
  max-width: 420px;
  font-size: 0.95rem;
  color: var(--ink);
  text-align: left;
  line-height: 1.55;
  background: #f3ede2;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  white-space: normal;
}

.design-info.is-visible {
  display: block;
}

.footer {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.footer a {
  color: inherit;
}

.kofi {
  justify-self: start;
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-2);
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.design-hex {
  --scale: 1.05;
}

.complete-controls {
  align-items: center;
}

.complete-mode,
.complete-auto,
.complete-nav {
  display: flex;
  gap: 10px;
  align-items: center;
}

.progress {
  position: relative;
  width: 180px;
  height: 8px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--accent-2);
  transition: width 0.2s ease;
}

.roll {
  appearance: none;
  border: none;
  background: var(--ink);
  color: #fff;
  padding: 12px 22px;
  border-radius: 14px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  box-shadow: 0 12px 24px rgba(29, 26, 20, 0.22);
}

.roll:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 28px rgba(29, 26, 20, 0.26);
}

.roll:disabled {
  cursor: wait;
  opacity: 0.7;
}

.ghost {
  appearance: none;
  border: 1px solid rgba(0, 0, 0, 0.2);
  background: transparent;
  color: var(--ink);
  padding: 10px 18px;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.ghost:hover {
  transform: translateY(-1px);
  border-color: rgba(0, 0, 0, 0.35);
}

.lines {
  display: grid;
  gap: 8px;
}

.line-btn {
  appearance: none;
  border: 1px solid rgba(0, 0, 0, 0.2);
  background: #fff;
  color: var(--ink);
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.status {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.grid {
  display: grid;
  gap: 18px;
  justify-items: center;
  min-height: 220px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  --scale: 0.9;
}

.grid[data-view="design"] {
  display: none;
}

.grid[data-count="1"] {
  grid-template-columns: minmax(220px, 1fr);
}

.grid[data-view="random"][data-count="1"] {
  --scale: 1.12;
}

.grid[data-view="random"][data-count="3"] {
  --scale: 0.95;
}

.grid[data-view="random"][data-count="6"] {
  --scale: 0.72;
}

.grid[data-view="rows"] {
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  --scale: 0.62;
}

.grid[data-view="complete"] {
  grid-template-columns: minmax(260px, 1fr);
  --scale: 1.05;
}

.hex-item {
  display: grid;
  gap: 12px;
  justify-items: center;
  width: 100%;
  max-width: 340px;
  animation: rise 0.6s ease both;
}

.hex {
  width: calc(var(--cell-w) * var(--scale));
  height: calc(var(--cell-h) * var(--scale));
  background-image: url("assets/iching-sheet.svg");
  background-repeat: no-repeat;
  background-size: calc(var(--sheet-w) * var(--scale)) calc(var(--sheet-h) * var(--scale));
  background-position: calc(var(--bx) * var(--scale)) calc(var(--by) * var(--scale));
  border-radius: 12px;
  box-shadow: 0 12px 24px rgba(29, 26, 20, 0.15);
  image-rendering: auto;
}

.grid[data-view="rows"] .hex-item {
  max-width: 240px;
}

.grid[data-view="rows"] {
  gap: 24px;
}

.grid[data-view="complete"] .hex-item {
  max-width: 320px;
}

.grid[data-view="complete"] {
  gap: 20px;
}

.grid[data-view="random"][data-count="3"] {
  gap: 22px;
}

.grid[data-view="random"][data-count="6"] {
  gap: 24px;
}


.hex-label {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

@media (max-width: 600px) {
  .panel {
    padding: 20px;
  }

  .controls {
    grid-template-columns: 1fr;
  }

  .roll {
    width: 100%;
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}