/* ========== Procedural Farm Builder — UI styles ========== */
:root {
  --bg-app:        #0b0d0f;
  --bg-panel:      #14171a;
  --bg-elevated:   #1c2024;
  --border:        #2a2f35;
  --border-strong: #3a3f45;
  --text-primary:  #f1f3f5;
  --text-muted:    #8a9199;
  --cat-air:       #38bdf8;
  --cat-water:     #14b8a6;
  --ok:            #2ec27e;
  --warn:          #f5a524;
  --alert:         #f43f5e;
  --font-prose:    'Inter', system-ui, sans-serif;
  --font-mono:     'JetBrains Mono', ui-monospace, monospace;
  --radius:        8px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-prose);
  font-size: 14px;
  height: 100%;
  overflow: hidden;
}

/* v0.2 — panel moved to the right (dashboard convention) */
.app {
  display: grid;
  grid-template-columns: 1fr 380px;
  height: 100vh;
}

/* ========== Side panel (right edge — dashboard convention) ========== */
.panel {
  background: var(--bg-panel);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  order: 2;
}
.stage { order: 1; }
.panel-head {
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--border);
}
.brand {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 18px;
}
.brand-mark {
  width: 14px; height: 14px;
  background: linear-gradient(135deg, var(--cat-air), var(--cat-water));
  border-radius: 3px;
}
.brand strong { font-weight: 700; }
.brand-sub    { color: var(--text-muted); font-size: 11.5px; margin-left: 4px; }

/* ========== Stepper ========== */
.stepper {
  display: flex; gap: 6px;
  list-style: none;
  margin: 0; padding: 0;
}
.step {
  flex: 1;
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: border-color .2s, color .2s, background .2s;
}
.step.is-active {
  background: rgba(56,189,248,0.10);
  border-color: var(--cat-air);
  color: var(--cat-air);
}
.step.is-done {
  border-color: rgba(46,194,126,0.40);
  color: var(--ok);
}
.step-num {
  display: inline-grid; place-items: center;
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 1px solid currentColor;
  font-size: 9.5px;
  font-weight: 700;
  flex-shrink: 0;
}

/* ========== Panel body ========== */
.panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 18px 20px;
}
.step-pane { display: none; }
.step-pane.is-active { display: block; animation: slideIn .25s ease-out; }
@keyframes slideIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.pane-title {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}
.pane-help {
  margin: 0 0 18px;
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Read-only summary bar (Step 2 shows Step-1 settings) */
.readonly-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  margin: 4px 0 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--cat-water);
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.readonly-bar .ro-key { color: var(--text-primary); font-weight: 600; }
.readonly-bar .ro-val { color: var(--text-muted); }
.readonly-bar .ro-sep { color: var(--border-strong); }

/* ========== Controls ========== */
.ctl {
  display: grid;
  grid-template-columns: 1fr 110px;
  grid-template-rows: auto auto;
  gap: 4px 12px;
  align-items: center;
  margin-bottom: 18px;
}
.ctl-label {
  grid-column: 1;
  font-size: 12.5px;
  color: var(--text-primary);
}
.ctl input[type="number"],
.ctl input[type="text"] {
  grid-column: 2;
  grid-row: 1 / span 2;
  width: 100%;
  padding: 9px 11px;
  background: var(--bg-app);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 14px;
  text-align: right;
}
.ctl input[type="text"] {
  font-family: var(--font-prose);
  text-align: left;
  font-size: 13px;
}
.ctl input:focus {
  outline: none;
  border-color: var(--cat-air);
}
.ctl-hint {
  grid-column: 1;
  font-size: 10.5px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ========== Length readout ========== */
.length-readout {
  margin-top: 4px;
  padding: 10px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-muted);
}
.length-readout strong {
  color: var(--cat-air);
  font-weight: 700;
}

/* ========== Step footer (next/back) ========== */
.step-foot {
  display: flex; gap: 8px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
.step-foot-spacer { flex: 1; }
.step-foot .btn { width: auto; flex: 0 0 auto; padding-left: 18px; padding-right: 18px; }
.step-foot .btn-primary { flex: 1; }

/* ========== Buttons ========== */
.btn {
  display: block;
  width: 100%;
  padding: 10px 14px;
  margin-bottom: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: var(--radius);
  font-family: var(--font-prose);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.btn:hover {
  border-color: var(--cat-air);
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary {
  background: var(--cat-air);
  color: var(--bg-app);
  border-color: var(--cat-air);
}
.btn-primary:hover {
  background: var(--cat-water);
  border-color: var(--cat-water);
}
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}
.btn-ghost:hover { color: var(--text-primary); }

/* ========== Summary list (step 3) ========== */
.summary {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 4px 14px;
  margin: 0 0 22px;
  padding: 14px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.summary dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}
.summary dt:nth-last-child(2),
.summary dt:last-of-type { border-bottom: none; }
.summary dd {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-primary);
  margin: 0;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}
.summary dd:last-of-type { border-bottom: none; }

/* ========== Status ========== */
.panel-foot {
  padding: 12px 20px 14px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.status {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 8px 10px;
  line-height: 1.5;
  white-space: pre-wrap;
}
.status.ok    { color: var(--ok);    border-color: rgba(46,194,126,0.4); }
.status.warn  { color: var(--warn);  border-color: rgba(245,165,36,0.4); }
.status.error { color: var(--alert); border-color: rgba(244,63,94,0.4); }
/* indeterminate "compressing…" sweep */
.status.busy {
  color: var(--cat-air);
  border-color: rgba(78,140,255,0.4);
  background:
    linear-gradient(90deg, transparent, rgba(78,140,255,0.20), transparent) no-repeat,
    var(--bg-elevated);
  background-size: 38% 100%;
  animation: status-sweep 1.1s linear infinite;
}
@keyframes status-sweep {
  0%   { background-position: -40% 0, 0 0; }
  100% { background-position: 140% 0, 0 0; }
}

/* ========== Stage ========== */
.stage {
  position: relative;
  background: #06080b;
  overflow: hidden;
}
.stage canvas { display: block; width: 100%; height: 100%; }

.stage-toolbar {
  position: absolute;
  top: 14px; right: 14px;
  z-index: 4;
  display: flex; gap: 6px;
}
.stage-btn {
  background: rgba(20, 23, 26, 0.92);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 7px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  border-radius: 6px;
  cursor: pointer;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.stage-btn:hover { color: var(--text-primary); border-color: var(--cat-air); }

.loading-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(11, 13, 15, 0.92);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 5;
}
.loading-overlay.hidden { display: none; }
.loading-overlay .loading-text {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  margin-top: 14px;
  text-align: center;
}
.spinner {
  width: 36px; height: 36px;
  border: 2px solid var(--border);
  border-top-color: var(--cat-air);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }