/* luac studio — glassmorphism, one orange accent, motion that guides the eye.
   The whole point of the redesign: the OUTPUT is the hero. Everything else is
   quiet chrome around it. */
:root {
  --accent: #f97316;
  --accent-2: #fb923c;
  --accent-glow: rgba(249, 115, 22, 0.35);
  --bg: #0a0b10;
  --fg: #eef1f6;
  --fg-dim: #9aa3b2;
  --fg-faint: #5c6472;
  --glass: rgba(255, 255, 255, 0.04);
  --glass-2: rgba(255, 255, 255, 0.06);
  --glass-line: rgba(255, 255, 255, 0.09);
  --ok: #34d399;
  --warn: #fbbf24;
  --err: #f87171;
  --info: #60a5fa;
  --mono: ui-monospace, "JetBrains Mono", "SF Mono", "Fira Code", Menlo, Consolas, monospace;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --r: 16px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  overflow-x: hidden;
}

/* animated aurora background — GPU-cheap, sits behind everything */
.aurora {
  position: fixed; inset: 0; z-index: -1; overflow: hidden;
  background:
    radial-gradient(60vw 60vw at 12% -8%, rgba(249,115,22,0.16), transparent 60%),
    radial-gradient(55vw 55vw at 98% 8%, rgba(99,102,241,0.14), transparent 60%),
    radial-gradient(70vw 50vw at 50% 120%, rgba(236,72,153,0.10), transparent 60%),
    var(--bg);
}
.aurora::before {
  content: ""; position: absolute; inset: -30%;
  background: radial-gradient(40vw 40vw at 30% 40%, rgba(249,115,22,0.10), transparent 55%);
  animation: drift 22s ease-in-out infinite alternate;
}
@keyframes drift { from { transform: translate(-6%, -4%) scale(1); } to { transform: translate(8%, 6%) scale(1.15); } }
@media (prefers-reduced-motion: reduce) { .aurora::before { animation: none; } }

/* ---- header ---- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
  padding: 1rem 1.6rem;
  border-bottom: 1px solid var(--glass-line);
  background: rgba(10, 11, 16, 0.55);
  backdrop-filter: blur(14px) saturate(140%);
  position: sticky; top: 0; z-index: 30;
}
.brand { display: flex; align-items: baseline; gap: 0.7rem; }
.logo { font-family: var(--mono); font-weight: 800; font-size: 1.55rem; letter-spacing: -0.03em; }
.logo .dot { color: var(--accent); text-shadow: 0 0 18px var(--accent-glow); }
.tagline { color: var(--fg-dim); font-size: 0.85rem; }
.badges { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.badge {
  font-family: var(--mono); font-size: 0.7rem; color: var(--accent-2);
  background: rgba(249,115,22,0.08);
  border: 1px solid rgba(249,115,22,0.25);
  padding: 0.2rem 0.6rem; border-radius: 999px;
}

/* ---- single-flow hero ---- */
.hero { max-width: 900px; margin: 0 auto; padding: 2rem 1.4rem 0; }
.hero-head { text-align: center; margin-bottom: 1.6rem; }
.hero-head h1 { font-size: clamp(1.8rem, 5vw, 2.9rem); font-weight: 800; letter-spacing: -0.03em; margin: 0 0 0.6rem; }
.hero-head p { color: var(--fg-dim); font-size: 1rem; max-width: 640px; margin: 0 auto; line-height: 1.6; }
.hero-head code { font-family: var(--mono); font-size: 0.85em; color: var(--accent-2); background: rgba(249,115,22,0.08); padding: 0.1em 0.4em; border-radius: 5px; }

.stage { padding: 0.5rem; display: flex; flex-direction: column; }
.stage #input {
  width: 100%; min-height: 240px; resize: vertical; border: none; outline: none; background: transparent; color: var(--fg);
  font-family: var(--mono); font-size: 13.5px; line-height: 1.65; padding: 1rem; white-space: pre; overflow: auto; tab-size: 4;
}
.stage #input::placeholder { color: var(--fg-faint); }
.stage-bar { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; padding: 0.5rem 0.6rem; border-top: 1px solid var(--glass-line); }
.primary.big { padding: 0.7rem 2rem; font-size: 0.95rem; }

.result-wrap { margin-top: 1.6rem; animation: rise .3s cubic-bezier(.2,.7,.3,1); }
@media (prefers-reduced-motion: reduce) { .result-wrap { animation: none; } }
.result-top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.7rem; }
.summary-line { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; font-size: 0.9rem; }
.summary-line .detname { font-weight: 700; }
.summary-line .basis { font-family: var(--mono); font-size: 0.72rem; color: var(--fg-dim); }
.output-card { overflow: hidden; }
.output-card .output { max-height: 60vh; }
.extras { margin-top: 0.9rem; display: flex; flex-direction: column; gap: 0.6rem; }

.more { max-width: 900px; margin: 1.4rem auto 0; }
.more > summary { cursor: pointer; list-style: none; padding: 0.9rem 1.2rem; font-size: 0.9rem; font-weight: 600; color: var(--fg-dim); display: flex; align-items: center; gap: 0.5rem; }
.more > summary::-webkit-details-marker { display: none; }
.more > summary::before { content: "▸"; color: var(--accent); transition: transform .15s; }
.more[open] > summary::before { transform: rotate(90deg); }
.more-body { padding: 0 1.2rem 1.2rem; display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; }
.more-tool { display: flex; align-items: center; gap: 0.5rem; padding: 0.5rem 0.7rem; border: 1px solid var(--glass-line); border-radius: 10px; background: var(--glass); }
.more-tool span { font-size: 0.82rem; color: var(--fg-dim); }

/* ---- tabs (legacy, unused in single-flow) ---- */
.tabs {
  display: flex; gap: 0.35rem; flex-wrap: wrap;
  padding: 0.9rem 1.6rem; max-width: 1300px; margin: 0 auto;
}
.tab {
  font-family: var(--mono); font-size: 0.8rem; color: var(--fg-dim);
  background: var(--glass); border: 1px solid var(--glass-line);
  padding: 0.45rem 0.85rem; border-radius: 999px;
  cursor: pointer; white-space: nowrap;
  transition: all .16s ease;
}
.tab:hover { color: var(--fg); border-color: var(--glass-2); transform: translateY(-1px); }
.tab.active {
  color: #17130a; font-weight: 700;
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  border-color: transparent;
  box-shadow: 0 6px 20px -6px var(--accent-glow);
}
.tab.sep { background: none; border: none; color: var(--fg-faint); cursor: default; padding-left: 0.6rem; }
.tab.sep:hover { transform: none; }

/* ---- workbench ---- */
.workbench {
  max-width: 1300px; margin: 0.4rem auto 0; padding: 0 1.6rem;
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem;
}
@media (max-width: 920px) { .workbench { grid-template-columns: 1fr; } }

.card-glass {
  background: var(--glass);
  border: 1px solid var(--glass-line);
  border-radius: var(--r);
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 50px -30px rgba(0,0,0,0.9);
}
.pane { display: flex; flex-direction: column; min-width: 0; }
.pane-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 1.2rem 0.5rem; }
.pane-head h2 { margin: 0; font-size: 1.05rem; font-weight: 700; letter-spacing: -0.01em; }
.tool-desc { margin: 0 1.2rem 0.6rem; color: var(--fg-dim); font-size: 0.86rem; min-height: 1.1rem; }

.editor-wrap {
  flex: 1; margin: 0 1.1rem 0.8rem;
  border: 1px solid var(--glass-line); border-radius: 12px;
  background: rgba(0,0,0,0.28); overflow: hidden; display: flex; min-height: 330px;
}
#input {
  flex: 1; resize: none; border: none; outline: none; background: transparent; color: var(--fg);
  font-family: var(--mono); font-size: 13px; line-height: 1.65; padding: 1rem; white-space: pre; overflow: auto; tab-size: 4;
}
#input::placeholder { color: var(--fg-faint); }
.output { flex: 1; margin: 0; overflow: auto; font-family: var(--mono); font-size: 13px; line-height: 1.65; padding: 1rem; white-space: pre; color: var(--fg); }
.output code { font-family: inherit; }
.output.empty { color: var(--fg-faint); display: flex; align-items: center; justify-content: center; text-align: center; }

/* ---- controls & actions ---- */
.controls { display: flex; flex-wrap: wrap; gap: 0.6rem 1rem; padding: 0 1.2rem 0.2rem; align-items: center; }
.controls label { color: var(--fg-dim); font-size: 0.82rem; display: flex; align-items: center; gap: 0.4rem; }
.controls select {
  font-family: var(--mono); font-size: 0.82rem; background: var(--glass-2); color: var(--fg);
  border: 1px solid var(--glass-line); border-radius: 8px; padding: 0.32rem 0.5rem;
}
.seg { display: inline-flex; background: var(--glass-2); border: 1px solid var(--glass-line); border-radius: 9px; overflow: hidden; }
.seg button { font-family: var(--mono); font-size: 0.78rem; background: none; border: none; color: var(--fg-dim); padding: 0.34rem 0.7rem; cursor: pointer; }
.seg button.on { background: var(--accent); color: #17130a; font-weight: 700; }

.actions { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; padding: 0.4rem 1.2rem 1.1rem; }
button, .filebtn {
  font-family: var(--mono); font-size: 0.85rem; cursor: pointer; border-radius: 10px;
  padding: 0.55rem 1rem; border: 1px solid var(--glass-line); background: var(--glass-2); color: var(--fg);
  transition: transform .06s ease, background .15s, border-color .15s, box-shadow .15s;
}
button:hover, .filebtn:hover { background: rgba(255,255,255,0.09); border-color: var(--glass-2); }
button:active { transform: translateY(1px) scale(0.99); }
button:disabled { opacity: 0.5; cursor: default; }
.primary {
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  color: #17130a; font-weight: 800; border-color: transparent; padding: 0.6rem 1.7rem;
  box-shadow: 0 10px 26px -10px var(--accent-glow);
}
.primary:hover { filter: brightness(1.06); box-shadow: 0 12px 30px -8px var(--accent-glow); }
.ghost { background: transparent; }
.small { padding: 0.36rem 0.75rem; font-size: 0.78rem; }
.filebtn { display: inline-flex; align-items: center; }

.status { font-family: var(--mono); font-size: 0.8rem; color: var(--fg-dim); margin-left: auto; display: flex; align-items: center; gap: 0.45rem; }
.status.ok { color: var(--ok); }
.status.err { color: var(--err); }
.spinner {
  width: 13px; height: 13px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.2); border-top-color: var(--accent);
  animation: spin 0.7s linear infinite; display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* the output pane's action row — made obvious on purpose */
.out-actions { display: flex; gap: 0.45rem; }
.copybtn {
  background: linear-gradient(180deg, var(--accent-2), var(--accent)); color: #17130a;
  font-weight: 700; border-color: transparent;
}
.copybtn:hover { filter: brightness(1.06); }

/* ---- result details (fade in) ---- */
.result { animation: rise .28s cubic-bezier(.2,.7,.3,1); }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .result { animation: none; } }

.meta { padding: 0 1.2rem; display: flex; flex-direction: column; gap: 0.55rem; }
.summary-card {
  display: flex; align-items: center; gap: 0.7rem; flex-wrap: wrap;
  padding: 0.7rem 0.9rem; border-radius: 12px;
  background: var(--glass-2); border: 1px solid var(--glass-line);
}
.detname { font-weight: 700; }
.k { color: var(--fg-faint); font-family: var(--mono); font-size: 0.75rem; }
.basis { font-family: var(--mono); font-size: 0.72rem; color: var(--fg-dim); }
.confwrap { margin-left: auto; min-width: 120px; }
.confbar { height: 7px; border-radius: 999px; background: rgba(255,255,255,0.08); overflow: hidden; }
.confbar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--ok)); transition: width .5s cubic-bezier(.2,.7,.3,1); }
.chip { display: inline-block; font-family: var(--mono); font-size: 0.72rem; padding: 0.14rem 0.55rem; border-radius: 999px; border: 1px solid var(--glass-line); color: var(--fg-dim); }
.chip.ok { color: var(--ok); border-color: rgba(52,211,153,.4); background: rgba(52,211,153,.08); }
.chip.warn { color: var(--warn); border-color: rgba(251,191,36,.4); background: rgba(251,191,36,.08); }
.chip.info { color: var(--info); border-color: rgba(96,165,250,.4); background: rgba(96,165,250,.08); }

/* collapsible details block for transparency without clutter */
details.panel { border: 1px solid var(--glass-line); border-radius: 12px; background: var(--glass); overflow: hidden; }
details.panel > summary {
  cursor: pointer; list-style: none; padding: 0.6rem 0.9rem; font-size: 0.85rem; font-weight: 600;
  display: flex; align-items: center; gap: 0.5rem; user-select: none;
}
details.panel > summary::-webkit-details-marker { display: none; }
details.panel > summary::before { content: "▸"; color: var(--accent); transition: transform .15s; }
details.panel[open] > summary::before { transform: rotate(90deg); }
details.panel .body { padding: 0 0.9rem 0.8rem; }
.stringpre, .outpre { margin: 0.2rem 0 0; max-height: 300px; overflow: auto; background: rgba(0,0,0,0.28); border: 1px solid var(--glass-line); border-radius: 8px; padding: 0.7rem 0.85rem; font-family: var(--mono); font-size: 12.5px; color: var(--fg); white-space: pre-wrap; word-break: break-word; }

.behavior-panel > summary { color: var(--accent-2); }
.beh-row { display: flex; gap: 0.7rem; align-items: baseline; padding: 0.35rem 0; border-bottom: 1px dashed var(--glass-line); font-size: 0.85rem; }
.beh-row:last-child { border-bottom: none; }
.beh-kind { font-family: var(--mono); font-size: 0.72rem; color: var(--fg-dim); min-width: 92px; text-transform: capitalize; }
.beh-msg { font-family: var(--mono); font-size: 0.8rem; color: var(--fg); word-break: break-word; }
.step { display: flex; gap: 0.7rem; align-items: baseline; font-size: 0.82rem; padding: 0.32rem 0; border-bottom: 1px dashed var(--glass-line); }
.step:last-child { border-bottom: none; }
.stage { font-family: var(--mono); font-size: 0.68rem; color: var(--accent-2); min-width: 70px; text-transform: uppercase; letter-spacing: 0.05em; }
.detail { color: var(--fg-dim); }

.errbox { padding: 0.8rem 0.9rem; border-radius: 12px; background: rgba(248,113,113,0.08); border: 1px solid rgba(248,113,113,0.3); color: #fecaca; font-size: 0.88rem; }

/* ---- api docs ---- */
.api-docs { max-width: 1000px; margin: 3rem auto; padding: 0 1.6rem; }
.api-docs > h2 { font-size: 1.3rem; }
.api-docs > p { color: var(--fg-dim); }
.ep { border: 1px solid var(--glass-line); border-radius: 12px; margin: 0.6rem 0; overflow: hidden; background: var(--glass); }
.ep-head { display: flex; align-items: center; gap: 0.8rem; padding: 0.7rem 1rem; cursor: pointer; }
.ep-method { font-family: var(--mono); font-size: 0.7rem; font-weight: 700; color: var(--ok); border: 1px solid rgba(52,211,153,.35); background: rgba(52,211,153,.08); padding: 0.1rem 0.45rem; border-radius: 6px; }
.ep-path { font-family: var(--mono); color: var(--accent-2); font-size: 0.9rem; }
.ep-desc { color: var(--fg-dim); font-size: 0.82rem; margin-left: auto; text-align: right; }
.ep-body { padding: 0 1rem 0.9rem; display: none; }
.ep.open .ep-body { display: block; }
.ep pre { background: rgba(0,0,0,0.3); border: 1px solid var(--glass-line); border-radius: 8px; padding: 0.7rem 0.9rem; overflow: auto; font-family: var(--mono); font-size: 12.5px; }

.foot { text-align: center; color: var(--fg-faint); font-size: 0.8rem; padding: 2rem 1rem 3rem; }

/* syntax tint */
.tok-kw { color: #c792ea; } .tok-str { color: #c3e88d; } .tok-num { color: #f78c6c; } .tok-com { color: var(--fg-faint); font-style: italic; } .tok-fn { color: #82aaff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 6px; border: 2px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); background-clip: padding-box; }