:root {
  --bg: #17171a;
  --panel: #2a2823;
  --panel-2: #232320;
  --border: #4a4740;
  --border-light: #635e52;
  --text: #ece6d6;
  --text-dim: #a89f8c;
  --accent: #6fae3e;
  --accent-dark: #4c7d29;
  --accent-2: #4a90c4;
  --warn: #d97b2d;
  --error: #c14343;
  --slot-bg: #1c1b18;
  --font-display: "Silkscreen", "Courier New", monospace;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  background-image:
    linear-gradient(var(--panel-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--panel-2) 1px, transparent 1px);
  background-size: 32px 32px;
  background-position: -1px -1px;
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.5;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

a { color: var(--accent-2); }

/* ---------- header ---------- */

.site-header { text-align: center; margin-bottom: 32px; }

.eyebrow {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  margin: 0 0 10px;
}

.site-header h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 6vw, 42px);
  margin: 0 0 14px;
  text-shadow: 3px 3px 0 rgba(0,0,0,0.4);
}

.arrow-glyph { color: var(--accent); }

.tagline {
  color: var(--text-dim);
  max-width: 46ch;
  margin: 0 auto;
  font-size: 15px;
}

/* ---------- pixel-bevel panel look, reused everywhere ---------- */

.bevel {
  border: 3px solid var(--border);
  box-shadow:
    inset 2px 2px 0 var(--border-light),
    inset -2px -2px 0 rgba(0,0,0,0.35);
}

.panel {
  background: var(--panel);
  border: 3px solid var(--border);
  box-shadow:
    inset 2px 2px 0 var(--border-light),
    inset -2px -2px 0 rgba(0,0,0,0.35),
    6px 6px 0 rgba(0,0,0,0.25);
  padding: 28px;
  margin-bottom: 20px;
}

/* ---------- crafting-row hero visual ---------- */

.crafting-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 24px;
}

.slot {
  width: 72px;
  height: 72px;
  background: var(--slot-bg);
  border: 3px solid var(--border);
  box-shadow:
    inset 2px 2px 0 rgba(0,0,0,0.5),
    inset -2px -2px 0 var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.slot-label {
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--text-dim);
  text-align: center;
}

.slot-out { border-color: var(--accent-dark); }
.slot-out .slot-label { color: var(--accent); }

.slot-arrow {
  font-size: 22px;
  color: var(--text-dim);
}

/* ---------- drop zone ---------- */

.drop-zone {
  border: 3px dashed var(--border-light);
  background: var(--panel-2);
  padding: 32px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.drop-zone:hover,
.drop-zone:focus-visible {
  border-color: var(--accent);
}

.drop-zone.drag-over {
  border-color: var(--accent);
  background: rgba(111, 174, 62, 0.12);
}

.drop-zone-title {
  font-family: var(--font-display);
  font-size: 15px;
  margin: 0 0 8px;
}

.drop-zone-sub {
  color: var(--text-dim);
  font-size: 13px;
  margin: 0;
}

.file-name {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  word-break: break-all;
}

.second-upload-slot { margin-top: 16px; }

.field-label {
  display: block;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.simple-file-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.simple-file-row .file-name { margin: 0; }

/* ---------- buttons ---------- */

.btn {
  font-family: var(--font-display);
  font-size: 13px;
  border: 3px solid var(--border);
  padding: 14px 20px;
  width: 100%;
  cursor: pointer;
  margin-top: 16px;
  color: var(--text);
  background: var(--panel-2);
  box-shadow:
    inset 2px 2px 0 var(--border-light),
    inset -2px -2px 0 rgba(0,0,0,0.4);
}

.btn:active:not(:disabled) {
  box-shadow:
    inset -2px -2px 0 var(--border-light),
    inset 2px 2px 0 rgba(0,0,0,0.4);
}

.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-primary {
  background: var(--accent-dark);
  border-color: #395e1e;
}
.btn-primary:not(:disabled):hover { background: var(--accent); }

.btn-secondary {
  background: #2c4b63;
  border-color: #1f3546;
}

.btn-ghost {
  background: transparent;
  box-shadow: none;
  border-color: var(--border);
  color: var(--text-dim);
}

.download-row { display: flex; flex-direction: column; gap: 0; }

/* ---------- engine status ---------- */

.engine-status {
  text-align: center;
  font-size: 12px;
  color: var(--text-dim);
  margin: 10px 0 0;
}
.engine-status.ready { color: var(--accent); }
.engine-status.error { color: var(--error); }

/* ---------- how it works ---------- */

.how-it-works {
  margin-top: 28px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.how-it-works summary {
  cursor: pointer;
  font-size: 13px;
  color: var(--text-dim);
}

.stage-list {
  font-size: 13px;
  color: var(--text-dim);
  padding-left: 20px;
  margin: 14px 0 0;
}

.stage-list li { margin-bottom: 8px; }
.stage-list b { color: var(--text); }

/* ---------- converting panel ---------- */

.furnace { text-align: center; margin-bottom: 20px; }

.furnace-bar {
  height: 22px;
  background: var(--slot-bg);
  border: 3px solid var(--border);
  box-shadow: inset 2px 2px 0 rgba(0,0,0,0.5);
  overflow: hidden;
}

.furnace-bar-fill {
  height: 100%;
  width: 0%;
  background: repeating-linear-gradient(
    45deg,
    var(--accent),
    var(--accent) 10px,
    var(--accent-dark) 10px,
    var(--accent-dark) 20px
  );
  background-size: 200% 100%;
  animation: furnace-stripe 1s linear infinite;
  transition: width 0.4s ease;
}

@keyframes furnace-stripe {
  from { background-position: 0 0; }
  to { background-position: -28px 0; }
}

@media (prefers-reduced-motion: reduce) {
  .furnace-bar-fill { animation: none; }
}

.stage-label {
  font-size: 13px;
  color: var(--text-dim);
  margin: 10px 0 0;
}

.log {
  background: var(--slot-bg);
  border: 3px solid var(--border);
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  max-height: 220px;
  overflow-y: auto;
  white-space: pre-wrap;
  margin: 0;
}

/* ---------- success ---------- */

#panel-success h2, #panel-error h2 {
  font-family: var(--font-display);
  font-size: 18px;
  margin: 0 0 20px;
  text-align: center;
}

.summary-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 24px;
}

.stat-chip {
  background: var(--panel-2);
  border: 2px solid var(--border);
  padding: 10px 14px;
  text-align: center;
  min-width: 84px;
}

.stat-chip strong {
  display: block;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--accent);
}

.stat-chip span {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ---------- error ---------- */

.error-message {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--slot-bg);
  border: 2px solid var(--error);
  padding: 14px;
  color: #e8b4b4;
  white-space: pre-wrap;
  word-break: break-word;
}

.error-hint {
  font-size: 13px;
  color: var(--text-dim);
}

/* ---------- footer ---------- */

.site-footer {
  text-align: center;
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 32px;
}

/* ---------- focus ---------- */

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}