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

:root {
  --bg: #ede5d8;
  --fg: #1a1208;
  --accent: #7a3b1e;
  --dim: #9a8878;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: "Courier New", Courier, monospace;
  overflow: hidden;
}

/* ── prompt screen ── */

#prompt-screen {
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
}

#prompt-wrap {
  display: flex;
  flex-direction: column;
  gap: 0;
  width: min(560px, 92vw);
}

#prompt-row {
  display: flex;
  gap: 0.6rem;
  align-items: stretch;
}

#topic-input {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--accent);
  color: var(--fg);
  font-family: inherit;
  font-size: 1.4rem;
  flex: 1;
  min-width: 0;
  padding: 0.3rem 0.1rem;
  outline: none;
  caret-color: var(--accent);
  letter-spacing: 0.02em;
}

#topic-input::placeholder { color: var(--dim); }

#generate-btn {
  background: transparent;
  border: 1px solid var(--dim);
  color: var(--accent);
  font-family: inherit;
  font-size: 1rem;
  padding: 0.3rem 1rem;
  cursor: pointer;
  letter-spacing: 0.08em;
  transition: border-color 0.15s, color 0.15s;
}

#generate-btn:hover {
  border-color: var(--accent);
  color: var(--fg);
}

/* ── density toggles ── */

#density-row {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

.density-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--dim);
  font-family: inherit;
  font-size: 0.72rem;
  padding: 0.15rem 0.6rem;
  cursor: pointer;
  letter-spacing: 0.1em;
  transition: color 0.15s, border-color 0.15s;
}

.density-btn:hover {
  color: var(--fg);
  border-color: var(--dim);
}

.density-btn.active {
  color: var(--accent);
  border-color: var(--accent);
}

/* ── progress bar ── */

#progress-wrap {
  width: 100%;
  height: 2px;
  background: color-mix(in srgb, var(--dim) 25%, transparent);
  margin-top: 6px;
}

#progress-bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.6s ease;
}

#status-text {
  font-size: 0.78rem;
  color: var(--dim);
  letter-spacing: 0.1em;
  min-height: 1.2em;
}

/* ── canvas screen ── */

#canvas-screen {
  position: fixed;
  inset: 0;
  overflow: auto;
  background: var(--bg);
}

#canvas {
  position: relative;
  width: 1600px;
  height: 2200px;
  background: var(--bg);
}

#btn-row {
  position: fixed;
  bottom: 1.2rem;
  left: 1.2rem;
  display: flex;
  gap: 0.5rem;
  z-index: 9999;
}

#btn-row button {
  background: transparent;
  border: 1px solid var(--dim);
  color: var(--dim);
  font-family: inherit;
  font-size: 0.75rem;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
}

#btn-row button:hover { color: var(--fg); border-color: var(--accent); }
#export-btn:disabled { opacity: 0.4; cursor: default; }
#rearrange-btn:disabled { opacity: 0.4; cursor: default; }

/* ── fragment base ── */

.fragment {
  position: absolute;
  transform-origin: top left;
}

.fragment-image {
  display: block;
  object-fit: cover;
}

.fragment-archive {
  display: block;
  position: relative;
}

.fragment-archive img {
  display: block;
  width: 100%;
  object-fit: cover;
}

.fragment-archive figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  font-size: 0.55rem;
  color: #e8d8c0;
  background: rgba(0,0,0,0.55);
  padding: 2px 4px;
  letter-spacing: 0.04em;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.fragment-headline {
  font-family: "Georgia", "Times New Roman", serif;
  font-size: 1.1rem;
  line-height: 1.25;
  color: var(--fg);
  max-width: 100%;
  word-break: break-word;
}

.fragment-snippet {
  font-family: "Arial Narrow", "Arial", sans-serif;
  font-size: 0.72rem;
  line-height: 1.4;
  color: #4a3828;
  max-width: 100%;
  word-break: break-word;
}

.fragment-metadata {
  font-family: "Courier New", Courier, monospace;
  font-size: 0.58rem;
  color: var(--dim);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

/* ── enrichment arrival animation ── */

@keyframes fragmentArrive {
  from {
    opacity: 0;
    transform: rotate(var(--frag-rotation, 0deg)) scale(0.88) translateY(10px);
  }
  to {
    opacity: 1;
    transform: rotate(var(--frag-rotation, 0deg)) scale(1) translateY(0);
  }
}

.fragment--incoming {
  animation: fragmentArrive 0.7s ease-out forwards;
}

/* ── mobile ── */

@media (max-width: 600px) {
  #topic-input {
    font-size: 1rem;
  }

  #generate-btn {
    font-size: 0.9rem;
    padding: 0.4rem 0.8rem;
  }

  .density-btn {
    padding: 0.3rem 0.8rem;
    font-size: 0.72rem;
  }

  #btn-row {
    bottom: 0.8rem;
    left: 0.8rem;
    right: 0.8rem;
    justify-content: space-between;
  }

  #btn-row button {
    padding: 0.55rem 0.7rem;
    font-size: 0.72rem;
  }
}