/* ASCII Runner — terminal aesthetic */
@font-face {
  font-family: "Archivo Black";
  src: url("../../fonts/ArchivoBlack-Regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("../../fonts/IBMPlexMono-Regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("../../fonts/IBMPlexMono-Medium.ttf") format("truetype");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("../../fonts/IBMPlexMono-SemiBold.ttf") format("truetype");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --bg: #09090c;
  --bg2: #0f0d11;
  --bg3: #171116;
  --fg: #ebe9ff;
  --dim: #827bad;
  --acc: #1d00ff;
  --acc-dim: #100090;
  --amber: #ffd75f;
  --border: #211a52;
  --accent-ink: #ffffff;
  --hover-fg: #ffffff;
  --accent-soft: rgba(29, 0, 255, .1);
  --stage-glow: rgba(29, 0, 255, .06);
  --scanline-color: rgba(0, 0, 0, .14);
  --scanline-opacity: .5;
  --modal-backdrop: rgba(3, 0, 18, .86);
  --accent-shadow: rgba(29, 0, 255, .32);
  --canvas-bg: #09090c;
  --canvas-fg: #7165ff;
  --canvas-grid: rgba(113, 101, 255, .16);
  --mono: "IBM Plex Mono", "Cascadia Mono", Consolas, "DejaVu Sans Mono", monospace;
  --display: "Archivo Black", Impact, sans-serif;
}

:root[data-theme="macos"] {
  color-scheme: light;
  --bg: #f5f5f7;
  --bg2: #ffffff;
  --bg3: #e9e9ed;
  --fg: #1d1d1f;
  --dim: #4b5260;
  --acc: #005bd7;
  --acc-dim: #0054c7;
  --amber: #8a4b00;
  --border: #c5c7cc;
  --accent-ink: #ffffff;
  --hover-fg: #ffffff;
  --accent-soft: rgba(0, 91, 215, .1);
  --stage-glow: rgba(0, 122, 255, .08);
  --scanline-color: rgba(18, 24, 35, .035);
  --scanline-opacity: .3;
  --modal-backdrop: rgba(32, 35, 42, .46);
  --accent-shadow: rgba(0, 91, 215, .22);
  --canvas-bg: #ffffff;
  --canvas-fg: #005bd7;
  --canvas-grid: rgba(35, 47, 66, .14);
}

:root[data-theme="java"] {
  color-scheme: dark;
  --bg: #1e1f22;
  --bg2: #2b2d30;
  --bg3: #34363b;
  --fg: #f3f4f6;
  --dim: #b7bdc8;
  --acc: #f89820;
  --acc-dim: #c97812;
  --amber: #ffd866;
  --border: #555961;
  --accent-ink: #18191c;
  --hover-fg: #18191c;
  --accent-soft: rgba(248, 152, 32, .12);
  --stage-glow: rgba(83, 130, 161, .13);
  --scanline-color: rgba(0, 0, 0, .12);
  --scanline-opacity: .35;
  --modal-backdrop: rgba(12, 13, 15, .8);
  --accent-shadow: rgba(248, 152, 32, .24);
  --canvas-bg: #151619;
  --canvas-fg: #f8a541;
  --canvas-grid: rgba(83, 130, 161, .24);
}

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

html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--fg);
  font: 13px/1.45 var(--mono);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* subtle scanlines */
body::after {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(0deg, var(--scanline-color) 0 1px, transparent 1px 3px);
  z-index: 999;
  opacity: var(--scanline-opacity);
}

/* ---------- topbar ---------- */
#topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 8px 16px 6px;
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
  flex-shrink: 0;
}
#hub-link {
  color: var(--acc);
  font-size: 11px;
  font-weight: bold;
  letter-spacing: .06em;
  text-decoration: none;
  white-space: nowrap;
}
#hub-link:hover { color: var(--fg); }
#runner-brand {
  display: flex;
  align-items: center;
}
#runner-brand strong {
  color: var(--fg);
  font: 18px/1 var(--display);
  letter-spacing: -.04em;
  white-space: nowrap;
}
.theme-control {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--dim);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .08em;
  white-space: nowrap;
}
.theme-control select {
  width: auto;
  min-width: 142px;
  padding: 5px 8px;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--fg);
  font: 10px var(--mono);
  cursor: pointer;
}
.theme-control select:hover,
.theme-control select:focus-visible {
  border-color: var(--acc);
  outline: 1px solid var(--acc);
}
.top-readme {
  flex: 0 0 auto;
  background: transparent;
  border: 1px solid var(--acc-dim);
  color: var(--acc);
  font: 10px var(--mono);
  letter-spacing: .06em;
  padding: 6px 9px;
  cursor: pointer;
}
.top-readme:hover,
.top-readme:focus-visible {
  background: var(--acc);
  color: var(--bg);
  outline: none;
}
#tabs { display: flex; gap: 4px; }
.tab {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--dim);
  font: inherit;
  padding: 6px 16px;
  cursor: pointer;
}
.tab:hover { color: var(--fg); border-color: var(--acc-dim); }
.tab.active {
  color: var(--acc);
  border-color: var(--acc-dim);
  background: var(--bg3);
  box-shadow: inset 0 -2px 0 var(--acc);
}
#statusline { margin-left: auto; color: var(--dim); font-size: 12px; }
#statusline::before { content: '['; }
#statusline::after { content: ']'; }

/* ---------- layout ---------- */
.tabpage { display: none; flex: 1; min-height: 0; }
.tabpage.active { display: flex; }

.panel {
  width: 270px;
  flex-shrink: 0;
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: var(--bg2);
  padding: 12px;
}
.ctl-group { margin-bottom: 18px; }
.ctl-group h3 {
  color: var(--acc-dim);
  font-size: 12px;
  font-weight: normal;
  letter-spacing: 1px;
  margin-bottom: 8px;
  user-select: none;
}

.stage { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.stage-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 6px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
  font-size: 12px;
  flex-shrink: 0;
}
.stage-bar .spacer { flex: 1; }
.stage-scroll {
  flex: 1;
  overflow: auto;
  padding: 16px;
  background:
    radial-gradient(ellipse at 50% 40%, var(--stage-glow), transparent 70%),
    var(--bg);
}
.stage-scroll canvas { image-rendering: pixelated; }
.stage-scroll pre {
  font: 10px/1.0 var(--mono);
  color: var(--acc);
  white-space: pre;
}

/* ---------- controls ---------- */
.seg { display: flex; flex-wrap: wrap; gap: 3px; }
.seg.vertical { flex-direction: column; }
.seg button {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--dim);
  font: inherit;
  font-size: 12px;
  padding: 5px 10px;
  cursor: pointer;
  flex: 1;
}
.seg button:hover { color: var(--fg); }
.seg button.on { color: var(--accent-ink); background: var(--acc); border-color: var(--acc); font-weight: bold; }

.btn {
  background: var(--bg3);
  border: 1px solid var(--acc-dim);
  color: var(--acc);
  font: inherit;
  font-size: 12px;
  padding: 6px 10px;
  cursor: pointer;
}
.btn:hover { background: var(--acc); color: var(--hover-fg); }
.btn:disabled { opacity: .35; cursor: default; }
.btn.wide { width: 100%; margin-top: 6px; }
.btn-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; }

select, textarea, input[type=text], input[type=number] {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--fg);
  font: inherit;
  padding: 6px;
}
select:focus, textarea:focus, input:focus { outline: 1px solid var(--acc-dim); }
select[size] { padding: 0; }
select[size] option { padding: 4px 8px; }
input.num { width: 60px; }

.slider-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 6px 0;
  font-size: 12px;
  color: var(--dim);
}
.slider-row input[type=range] { flex: 1; accent-color: var(--acc); min-width: 0; }
.slider-row output { width: 34px; text-align: right; color: var(--fg); }
.slider-row.small { margin: 0; gap: 6px; }
.slider-row.small input[type=range] { width: 90px; flex: none; }

.chk-row { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--dim); margin-top: 6px; cursor: pointer; }
.chk-row input { accent-color: var(--acc); }
.chk-row.small { margin: 0; }

.dim { color: var(--dim); }
.small { font-size: 11px; }
.hidden { display: none !important; }

/* ---------- dropzone ---------- */
#dropzone {
  border: 1px dashed var(--acc-dim);
  padding: 18px 10px;
  text-align: center;
  cursor: pointer;
  color: var(--dim);
  font-size: 12px;
  transition: background .15s;
}
#dropzone:hover, #dropzone.over { background: var(--accent-soft); color: var(--fg); }
.dz-icon { color: var(--acc); font-size: 18px; margin-bottom: 4px; }

/* ---------- editor palette ---------- */
#palette .pal-group { margin-bottom: 6px; }
#palette .pal-label { font-size: 10px; color: var(--dim); margin-bottom: 2px; }
#palette .pal-chars { display: flex; flex-wrap: wrap; gap: 2px; }
#palette button, .brush-chip {
  width: 24px; height: 24px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--fg);
  font: 14px var(--mono);
  cursor: pointer;
  padding: 0;
}
#palette button:hover { border-color: var(--acc); }
#palette button.on { background: var(--acc); color: var(--accent-ink); border-color: var(--acc); }
.brush-chip { color: var(--acc); border-color: var(--acc-dim); vertical-align: middle; margin-left: 8px; }
#brush-custom { margin-top: 6px; }

#color-palette { display: flex; flex-wrap: wrap; gap: 3px; }
#color-palette button {
  width: 22px; height: 22px;
  border: 1px solid var(--border);
  cursor: pointer;
  padding: 0;
}
#color-palette button.on { outline: 2px solid var(--amber); }
#color-palette button.default-color {
  background: var(--bg) !important;
  color: var(--acc);
  font: 12px var(--mono);
}

#editor-canvas, #conv-canvas, #live-canvas { display: block; }
#editor-canvas { cursor: crosshair; touch-action: none; }

/* ---------- banner ---------- */
#banner-out { font-size: 13px !important; }

/* ---------- toast ---------- */
#toast {
  position: fixed;
  bottom: 24px; left: 50%;
  transform: translateX(-50%);
  background: var(--bg3);
  border: 1px solid var(--acc);
  color: var(--acc);
  padding: 8px 20px;
  z-index: 1000;
  box-shadow: 0 0 20px var(--accent-shadow);
}

/* ---------- safety README ---------- */
#safety-readme {
  position: fixed;
  top: 50%;
  left: 50%;
  width: min(760px, calc(100vw - 32px));
  max-height: calc(100dvh - 32px);
  margin: 0;
  padding: 0;
  overflow: auto;
  transform: translate(-50%, -50%);
  background: var(--bg2);
  color: var(--fg);
  border: 1px solid var(--acc);
  box-shadow: 0 0 70px var(--accent-shadow);
}

#safety-readme::backdrop {
  background: var(--modal-backdrop);
  backdrop-filter: blur(3px);
}

#safety-readme.fallback-open {
  position: fixed;
  inset: 16px;
  z-index: 2000;
  display: block;
  margin: auto;
  transform: none;
}

.readme-card {
  padding: clamp(20px, 4vw, 36px);
}

.readme-card > header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.readme-kicker {
  display: block;
  margin-bottom: 8px;
  color: var(--acc);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .12em;
}

.readme-card h2 {
  margin: 0;
  color: var(--fg);
  font: clamp(24px, 5vw, 40px)/.95 var(--display);
  letter-spacing: -.05em;
}

.readme-close {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--dim);
  font: 22px/1 var(--mono);
  cursor: pointer;
}

.readme-close:hover,
.readme-close:focus-visible {
  border-color: var(--acc);
  color: var(--acc);
  outline: none;
}

.readme-lead {
  margin: 20px 0;
  color: var(--fg);
  font-size: 13px;
  line-height: 1.65;
}

.readme-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.readme-grid section {
  padding: 16px;
  background: var(--bg);
  border: 1px solid var(--border);
}

.readme-grid h3 {
  margin: 0 0 10px;
  color: var(--acc);
  font-size: 11px;
  letter-spacing: .08em;
}

.readme-grid ul {
  margin: 0;
  padding-left: 18px;
  color: var(--dim);
  font-size: 11px;
  line-height: 1.75;
}

.readme-warning {
  margin: 16px 0 0;
  padding: 14px 16px;
  background: var(--accent-soft);
  border-left: 3px solid var(--acc);
  color: var(--dim);
  font-size: 11px;
  line-height: 1.65;
}

.readme-warning strong {
  color: var(--fg);
}

.terms-consent {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 10px;
  margin-top: 14px;
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--dim);
  font-size: 11px;
  line-height: 1.6;
}

.terms-consent input {
  width: 16px;
  height: 16px;
  margin: 1px 0 0;
  accent-color: var(--acc);
}

.terms-consent a {
  color: var(--acc);
  font-weight: 600;
}

.readme-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 18px;
}

.readme-actions .btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  text-align: center;
  text-decoration: none;
}

.readme-primary {
  background: var(--acc);
  color: var(--accent-ink);
}

.readme-primary:disabled {
  opacity: .38;
  cursor: not-allowed;
}

/* scrollbars */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); }
::-webkit-scrollbar-thumb:hover { background: var(--acc-dim); }

@media (max-width: 980px) {
  body {
    min-height: 100%;
    height: auto;
    overflow: auto;
  }

  #topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    flex-wrap: wrap;
    gap: 8px 12px;
  }

  #tabs {
    order: 3;
    width: 100%;
    overflow-x: auto;
  }

  .tab {
    flex: 1 0 auto;
  }

  #statusline {
    margin-left: auto;
  }

  .tabpage.active {
    min-height: calc(100vh - 102px);
    flex-direction: column;
  }

  .panel {
    width: 100%;
    max-height: 48vh;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .stage {
    min-height: 58vh;
  }
}

@media (max-width: 560px) {
  #runner-brand strong {
    font-size: 15px;
  }

  #statusline {
    display: none;
  }

  .top-readme {
    font-size: 0;
  }

  .theme-control span {
    display: none;
  }

  .theme-control select {
    min-width: 116px;
  }

  .top-readme::after {
    content: "README";
    font-size: 9px;
  }

  .panel {
    max-height: none;
  }

  .stage-bar {
    flex-wrap: wrap;
  }

  .readme-grid,
  .readme-actions {
    grid-template-columns: 1fr;
  }
}