/* GTNH ore-processing regex generator — GregTech machine-panel aesthetic.
   Dark steel, riveted panels, amber energy accents, LCD readouts. */

:root {
  --steel-950: #101216;
  --steel-900: #16191f;
  --steel-850: #1b1f27;
  --steel-800: #222732;
  --steel-700: #2c3342;
  --steel-600: #3a4356;
  --steel-line: #39404f;
  --text: #d7dce6;
  --text-dim: #8b93a5;
  --amber: #ffb000;
  --amber-dim: #b97f0a;
  --copper: #e8894a;
  --teal: #4ad3c0;
  --danger: #ff5d5d;
  --lcd-bg: #0c1410;
  --lcd-text: #7dffb0;
  --radius: 4px;
  font-size: 15px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(232, 137, 74, 0.07), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(74, 211, 192, 0.05), transparent 55%),
    repeating-linear-gradient(0deg, transparent 0 47px, rgba(255, 255, 255, 0.015) 47px 48px),
    repeating-linear-gradient(90deg, transparent 0 47px, rgba(255, 255, 255, 0.015) 47px 48px),
    var(--steel-950);
  color: var(--text);
  font-family: "Chakra Petch", system-ui, sans-serif;
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--teal); }
code { font-family: "IBM Plex Mono", monospace; font-size: 0.85em; color: var(--copper); }

/* ---------- masthead ---------- */

.masthead {
  border-bottom: 1px solid var(--steel-line);
  background: linear-gradient(180deg, var(--steel-850), var(--steel-900));
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 8px 24px rgba(0, 0, 0, 0.35);
  position: relative;
  overflow: hidden;
}
.masthead::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--amber) 0 26px, transparent 26px 40px);
  opacity: 0.75;
}
.masthead-inner {
  max-width: 1500px;
  margin: 0 auto;
  padding: 22px 28px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.brand { display: flex; gap: 16px; align-items: center; }
.brand-icon { width: 52px; height: 52px; image-rendering: pixelated; filter: drop-shadow(0 2px 6px rgba(0,0,0,.6)); }
.brand h1 {
  margin: 0;
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.brand h1 span { color: var(--amber); }
.tagline { margin: 2px 0 0; color: var(--text-dim); font-size: 0.85rem; letter-spacing: 0.02em; }

.masthead-actions { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }

.mode-switch {
  display: flex;
  border: 1px solid var(--steel-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--steel-950);
}
.mode-btn {
  appearance: none; border: 0; background: transparent;
  color: var(--text-dim);
  font: inherit; font-size: 0.85rem; font-weight: 600;
  padding: 9px 16px; cursor: pointer;
  letter-spacing: 0.03em;
}
.mode-btn.is-active { background: var(--amber); color: #191203; }
.mode-btn:not(.is-active):hover { color: var(--text); }

.action-btn {
  appearance: none;
  font: inherit; font-size: 0.85rem; font-weight: 600;
  padding: 9px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--amber-dim);
  background: linear-gradient(180deg, #2a2415, #211c10);
  color: var(--amber);
  cursor: pointer;
  letter-spacing: 0.03em;
  transition: filter 120ms;
}
.action-btn:hover { filter: brightness(1.25); }

/* ---------- layout ---------- */

.layout {
  max-width: 1500px;
  margin: 26px auto 60px;
  padding: 0 28px;
  display: grid;
  grid-template-columns: minmax(430px, 1fr) minmax(480px, 1.05fr);
  gap: 24px;
  align-items: start;
}
@media (max-width: 1080px) { .layout { grid-template-columns: 1fr; } }

.panel {
  background: linear-gradient(180deg, var(--steel-850), var(--steel-900));
  border: 1px solid var(--steel-line);
  border-radius: 6px;
  padding: 18px 20px 20px;
  margin-bottom: 22px;
  box-shadow: 0 1px 0 rgba(255,255,255,.045) inset, 0 10px 22px rgba(0,0,0,.3);
  position: relative;
}
.panel::before, .panel::after {
  content: "";
  position: absolute; top: 8px; width: 6px; height: 6px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #6c7689, #2a3040 70%);
  box-shadow: 0 0 0 1px rgba(0,0,0,.5);
}
.panel::before { left: 8px; }
.panel::after { right: 8px; }

.panel-title {
  margin: 0 0 14px;
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--copper);
}
.panel-sub {
  display: block;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  font-size: 0.8rem;
  margin-top: 2px;
}

/* ---------- route picker ---------- */

.route-picker { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 560px) { .route-picker { grid-template-columns: 1fr; } }
.route-card {
  appearance: none; text-align: left; font: inherit; cursor: pointer;
  border: 1px solid var(--steel-line);
  border-radius: var(--radius);
  background: var(--steel-800);
  color: var(--text);
  padding: 11px 13px;
  transition: border-color 120ms, background 120ms;
}
.route-card:hover { border-color: var(--steel-600); }
.route-card.is-active {
  border-color: var(--amber);
  background: linear-gradient(180deg, #2b2514, #23200f);
  box-shadow: 0 0 0 1px rgba(255, 176, 0, 0.25), 0 0 18px rgba(255, 176, 0, 0.08);
}
.route-card .route-chain { font-weight: 600; font-size: 0.86rem; letter-spacing: 0.01em; }
.route-card.is-active .route-chain { color: var(--amber); }
.route-card .route-note { color: var(--text-dim); font-size: 0.78rem; margin-top: 3px; }

/* ---------- toolbar ---------- */

.toolbar { margin-bottom: 14px; }
.add-row { display: flex; gap: 8px; margin-bottom: 10px; }
.add-row input, .add-row select, .ore-route {
  font: inherit; font-size: 0.85rem;
  background: var(--steel-950);
  color: var(--text);
  border: 1px solid var(--steel-line);
  border-radius: var(--radius);
  padding: 8px 10px;
}
.add-row input { flex: 1; min-width: 0; }
.add-row input:focus, .add-row select:focus, .ore-route:focus {
  outline: none; border-color: var(--amber-dim);
}
.tool-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.sort-label { color: var(--text-dim); font-size: 0.8rem; }
.tool-spacer { flex: 1; }
.chip-btn {
  appearance: none; font: inherit; font-size: 0.78rem; font-weight: 600;
  background: var(--steel-800); color: var(--text-dim);
  border: 1px solid var(--steel-line); border-radius: 999px;
  padding: 5px 12px; cursor: pointer;
}
.chip-btn:hover { color: var(--text); border-color: var(--steel-600); }
.chip-btn.is-active { color: var(--amber); border-color: var(--amber-dim); background: #241f10; }
.chip-danger:hover { color: var(--danger); border-color: var(--danger); }

/* ---------- ore grid ---------- */

.ore-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 9px; }
.ore-card {
  display: grid;
  grid-template-columns: 34px 1fr 22px;
  grid-template-rows: auto auto;
  gap: 2px 10px;
  align-items: center;
  background: var(--steel-800);
  border: 1px solid var(--steel-line);
  border-radius: var(--radius);
  padding: 9px 10px;
  transition: border-color 120ms;
}
.ore-card:hover { border-color: var(--steel-600); }
.ore-card.is-none { opacity: 0.55; }
.ore-icon {
  grid-row: 1 / 3;
  width: 32px; height: 32px;
  image-rendering: pixelated;
  background: var(--steel-950);
  border: 1px solid var(--steel-700);
  border-radius: 3px;
  padding: 3px;
}
.ore-names { min-width: 0; }
.ore-en { font-weight: 600; font-size: 0.83rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ore-sub { color: var(--text-dim); font-size: 0.72rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ore-note { grid-column: 1 / -1; color: var(--amber); font-size: 0.68rem; opacity: 0.85; }
.ore-route {
  grid-column: 2 / 4;
  width: 100%;
  font-size: 0.75rem;
  padding: 5px 7px;
  color: var(--teal);
}
.ore-remove {
  appearance: none; border: 0; background: transparent; cursor: pointer;
  color: var(--text-dim); font-size: 1rem; line-height: 1; padding: 2px;
  align-self: start;
}
.ore-remove:hover { color: var(--danger); }

/* ---------- machine output cards ---------- */

.machine-card {
  background: linear-gradient(180deg, var(--steel-850), var(--steel-900));
  border: 1px solid var(--steel-line);
  border-radius: 6px;
  margin-bottom: 18px;
  box-shadow: 0 1px 0 rgba(255,255,255,.045) inset, 0 10px 22px rgba(0,0,0,.3);
  overflow: hidden;
}
.machine-head {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--steel-line);
  background: linear-gradient(180deg, var(--steel-800), var(--steel-850));
}
.machine-head img { width: 34px; height: 34px; image-rendering: pixelated; }
.machine-title { flex: 1; min-width: 0; }
.machine-title h3 { margin: 0; font-size: 0.98rem; letter-spacing: 0.05em; text-transform: uppercase; }
.machine-title .multi { color: var(--text-dim); font-size: 0.75rem; }
.machine-meta { display: flex; align-items: center; gap: 12px; }
.char-count { font-family: "IBM Plex Mono", monospace; font-size: 0.78rem; color: var(--text-dim); }
.char-count.is-over { color: var(--danger); font-weight: 700; }
.copy-btn {
  appearance: none; font: inherit; font-size: 0.78rem; font-weight: 700;
  background: var(--steel-950); color: var(--teal);
  border: 1px solid var(--steel-600); border-radius: var(--radius);
  padding: 6px 13px; cursor: pointer;
  letter-spacing: 0.05em; text-transform: uppercase;
}
.copy-btn:hover { border-color: var(--teal); }
.copy-btn.is-copied { color: #191203; background: var(--teal); border-color: var(--teal); }

.machine-body { padding: 13px 16px 15px; }
.regex-box {
  width: 100%;
  min-height: 74px;
  resize: vertical;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--lcd-text);
  background:
    repeating-linear-gradient(0deg, transparent 0 2px, rgba(0,0,0,0.18) 2px 3px),
    var(--lcd-bg);
  border: 1px solid #1d3a2b;
  border-radius: var(--radius);
  box-shadow: 0 0 14px rgba(125, 255, 176, 0.06) inset;
  padding: 9px 11px;
  word-break: break-all;
}
.regex-box:focus { outline: 1px solid #2c5942; }
.regex-box.is-over { color: #ffb4b4; border-color: #5c2626; background: #170d0d; }

.segments { margin-top: 10px; }
.segment {
  font-size: 0.78rem;
  color: var(--text-dim);
  padding: 5px 0;
}
.segment + .segment { border-top: 1px dashed var(--steel-700); }
.segment .form-tag {
  display: inline-block;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  color: var(--copper);
  background: rgba(232, 137, 74, 0.08);
  border: 1px solid rgba(232, 137, 74, 0.25);
  border-radius: 3px;
  padding: 1px 7px;
  margin-right: 7px;
}
.segment .logic-tag { color: var(--teal); font-weight: 600; margin-right: 4px; }
.segment .ore-list { color: var(--text-dim); }

.iof-mode-tag {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  color: var(--amber);
  border: 1px solid var(--amber-dim);
  border-radius: 3px;
  padding: 1px 8px;
}
.warn-card {
  border: 1px solid #5c4526;
  background: #201a0f;
  border-radius: 6px;
  color: #e9c88a;
  font-size: 0.83rem;
  padding: 12px 16px;
  margin-bottom: 18px;
}

/* ---------- about / footer / toast ---------- */

.about ol { margin: 0 0 12px; padding-left: 20px; font-size: 0.87rem; }
.about li + li { margin-top: 7px; }
.fine { color: var(--text-dim); font-size: 0.77rem; margin: 0; }

.footer {
  border-top: 1px solid var(--steel-line);
  padding: 18px 28px 30px;
  color: var(--text-dim);
  font-size: 0.78rem;
  text-align: center;
}

.toast {
  position: fixed;
  left: 50%; bottom: 28px;
  transform: translateX(-50%) translateY(20px);
  background: var(--steel-800);
  border: 1px solid var(--amber-dim);
  color: var(--amber);
  font-size: 0.85rem; font-weight: 600;
  border-radius: var(--radius);
  padding: 10px 18px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms, transform 160ms;
  z-index: 100;
}
.toast.is-show { opacity: 1; transform: translateX(-50%) translateY(0); }

::selection { background: rgba(255, 176, 0, 0.3); }

.stray-row {
  display: flex; gap: 8px; align-items: center;
  margin-top: 12px; font-size: 0.83rem; color: var(--text-dim);
  cursor: pointer;
}
.stray-row input { accent-color: var(--amber); }
.stray-row:hover { color: var(--text); }

.decomp-section { margin-top: 10px; }
.decomp-label { font-size: 0.78rem; color: var(--text-dim); margin-bottom: 5px; }
.decomp-chips { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.decomp-chip {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--steel-800); border: 1px solid var(--steel-line);
  border-radius: 999px; padding: 2px 8px; font-size: 0.75rem; color: var(--text);
}
.decomp-chip-x {
  appearance: none; border: 0; background: none; cursor: pointer;
  color: var(--text-dim); font-size: 0.85rem; padding: 0;
}
.decomp-chip-x:hover { color: var(--danger); }
.decomp-add {
  font: inherit; font-size: 0.75rem; width: 110px;
  background: var(--steel-950); color: var(--text);
  border: 1px solid var(--steel-line); border-radius: 999px; padding: 3px 9px;
}
.decomp-add:focus { outline: none; border-color: var(--amber-dim); }