:root {
  --petrol: #06041F;
  --petrol-2: #0c0a2c;
  --panel: rgba(255, 255, 255, 0.035);
  --panel-2: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(71, 215, 172, 0.35);
  --mint: #47d7ac;
  --mint-2: #6ff0c9;
  --mint-soft: rgba(71, 215, 172, 0.14);
  --code: #ff8a5b;
  --req: #7c83ff;
  --both: #47d7ac;
  --text: #eef4f2;
  --muted: #9098b8;
  --danger: #ff5b6e;
  --radius: 18px;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.7);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--petrol);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

/* ---------- animated background ---------- */
.bg { position: fixed; inset: 0; overflow: hidden; z-index: -1; background: radial-gradient(circle at 50% -10%, #120d3a 0%, var(--petrol) 45%); }
.orb { position: absolute; border-radius: 50%; filter: blur(70px); opacity: 0.5; animation: float 18s var(--ease) infinite; }
.orb-a { width: 460px; height: 460px; background: #47d7ac; top: -120px; left: -80px; }
.orb-b { width: 380px; height: 380px; background: #7c83ff; bottom: -120px; right: -60px; animation-delay: -6s; }
.orb-c { width: 300px; height: 300px; background: #ff8a5b; top: 40%; left: 55%; opacity: 0.28; animation-delay: -11s; }
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, 30px) scale(1.08); }
  66% { transform: translate(-30px, 20px) scale(0.95); }
}
.grid-lines {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at 50% 30%, black, transparent 75%);
}

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 16px clamp(16px, 5vw, 48px);
  backdrop-filter: blur(14px);
  background: linear-gradient(180deg, rgba(6,4,31,0.85), rgba(6,4,31,0.35));
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 14px; }
.logo { height: 34px; width: auto; display: block; transition: transform .3s var(--ease), filter .3s; filter: drop-shadow(0 0 10px rgba(71,215,172,0.25)); }
.logo:hover { transform: scale(1.04); filter: drop-shadow(0 0 14px rgba(71,215,172,0.5)); }
.brand-divider { width: 1px; height: 30px; background: var(--border); }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-title { font-weight: 700; font-size: 1.02rem; letter-spacing: 0.2px; }
.brand-sub { font-size: 0.76rem; color: var(--muted); }
.top-links { display: flex; gap: 10px; }
.link-pill {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 14px; border-radius: 999px;
  color: var(--text); text-decoration: none; font-size: 0.83rem; font-weight: 600;
  background: var(--panel); border: 1px solid var(--border);
  transition: transform .25s var(--ease), border-color .25s, background .25s, box-shadow .25s;
}
.link-pill:hover { transform: translateY(-2px); border-color: var(--border-strong); box-shadow: 0 8px 24px -12px var(--mint); }
.link-accent { background: var(--mint-soft); border-color: var(--border-strong); }
.dot-icon { color: var(--mint); }

/* ---------- layout ---------- */
.container {
  width: min(1080px, 100%);
  margin: 0 auto;
  padding: clamp(20px, 4vw, 40px) clamp(16px, 5vw, 40px) 40px;
  display: flex; flex-direction: column; gap: 22px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(18px, 3vw, 26px);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--mint), transparent);
  opacity: 0.4;
}
.card-head { margin-bottom: 18px; }
.card-head h2 { margin: 0; font-size: 1.15rem; }
.card-head h2::first-letter { color: var(--mint); }
.card-hint { margin: 6px 0 0; color: var(--muted); font-size: 0.86rem; }

/* reveal on load */
.reveal { opacity: 0; transform: translateY(18px); animation: reveal 0.7s var(--ease) forwards; }
#control-card { animation-delay: 0.08s; }
#pipeline-card { animation-delay: 0.16s; }
@keyframes reveal { to { opacity: 1; transform: none; } }

/* ---------- setup ---------- */
.setup-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.status-row { display: flex; flex-wrap: wrap; gap: 12px; }
.status-chip {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 16px; border-radius: 999px;
  background: var(--panel-2); border: 1px solid var(--border);
  font-size: 0.86rem; font-weight: 600;
  transition: border-color .3s, background .3s;
}
.chip-led {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--muted); box-shadow: 0 0 0 0 rgba(71,215,172,0);
  transition: background .3s, box-shadow .3s;
}
.status-chip.on { border-color: var(--border-strong); }
.status-chip.on .chip-led { background: var(--mint); box-shadow: 0 0 12px 2px rgba(71,215,172,0.6); }
.status-chip.checking .chip-led { background: #ffce6b; animation: pulse 1s ease-in-out infinite; }
.status-chip.off .chip-led { background: var(--danger); }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }

.setup-msg { color: var(--muted); font-size: 0.85rem; display: block; }
.setup-msg:not(:empty) { margin-top: 14px; }
.setup-msg.ok { color: var(--mint); }
.setup-msg.err { color: var(--danger); }

/* ---------- buttons ---------- */
.btn {
  position: relative;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 22px; border-radius: 12px; border: 1px solid var(--border);
  font-size: 0.92rem; font-weight: 700; cursor: pointer;
  color: var(--text); background: var(--panel-2);
  transition: transform .2s var(--ease), box-shadow .25s, background .25s, opacity .2s;
}
.btn:hover:not(:disabled) { transform: translateY(-2px); }
.btn:active:not(:disabled) { transform: translateY(0) scale(0.98); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary { background: linear-gradient(120deg, var(--mint), var(--mint-2)); color: #04231a; border: none; box-shadow: 0 10px 30px -12px var(--mint); }
.btn-run { background: linear-gradient(120deg, #47d7ac, #7c83ff); color: #06041F; border: none; box-shadow: 0 12px 34px -14px #7c83ff; }
.btn-run .btn-arrow { transition: transform .25s var(--ease); }
.btn-run:hover:not(:disabled) .btn-arrow { transform: translateX(4px); }
.btn-ghost { background: transparent; border: 1px solid var(--border-strong); color: var(--mint); text-decoration: none; margin-top: 14px; }
.btn-spinner {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid rgba(0,0,0,0.25); border-top-color: #04231a;
  animation: spin 0.7s linear infinite;
}
.btn-run .btn-spinner { border-color: rgba(6,4,31,0.3); border-top-color: #06041F; }
@keyframes spin { to { transform: rotate(360deg); } }
.btn.loading { pointer-events: none; }

/* ---------- controls ---------- */
.control-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.control-label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--muted); margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.6px; }
.toggle-row { display: flex; gap: 10px; flex-wrap: wrap; }
.toggle {
  padding: 10px 18px; border-radius: 10px; cursor: pointer;
  background: var(--panel-2); border: 1px solid var(--border); color: var(--muted);
  font-weight: 600; font-size: 0.88rem;
  transition: all .22s var(--ease);
}
.toggle.active { color: #04231a; background: var(--mint); border-color: var(--mint); box-shadow: 0 8px 22px -12px var(--mint); }
.toggle:hover { transform: translateY(-2px); }

.demo-product { margin: 10px 0 0; font-size: 0.86rem; color: var(--mint); font-weight: 600; }
.demo-product small { color: var(--muted); font-weight: 400; }

.select {
  width: 100%; padding: 12px 14px; border-radius: 10px;
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  font-size: 0.9rem; font-weight: 600; cursor: pointer; appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--mint) 50%), linear-gradient(135deg, var(--mint) 50%, transparent 50%);
  background-position: calc(100% - 20px) center, calc(100% - 15px) center;
  background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
  transition: border-color .2s;
}
.select:hover, .select:focus { border-color: var(--border-strong); outline: none; }
.select option { background: #12102c; color: var(--text); }

.control-reqs { margin-top: 22px; }
.req-count { color: var(--mint); font-weight: 700; margin-left: 4px; }
.req-list {
  display: flex; flex-wrap: wrap; gap: 8px;
  max-height: 148px; overflow-y: auto; padding: 4px 2px;
}
.req-list::-webkit-scrollbar { width: 8px; }
.req-list::-webkit-scrollbar-thumb { background: var(--panel-2); border-radius: 8px; }
.req-chip {
  padding: 8px 13px; border-radius: 9px; cursor: pointer; font-size: 0.8rem; font-weight: 600;
  background: var(--panel-2); border: 1px solid var(--border); color: var(--muted);
  transition: all .18s var(--ease); white-space: nowrap;
}
.req-chip:hover { transform: translateY(-1px); border-color: var(--border-strong); }
.req-chip.active { color: #04231a; background: var(--mint); border-color: var(--mint); }

.slider-wrap { display: flex; align-items: center; gap: 16px; }
input[type="range"] {
  -webkit-appearance: none; appearance: none; height: 6px; flex: 1;
  border-radius: 999px; outline: none;
  background: linear-gradient(90deg, var(--mint) 0%, var(--mint) 33%, var(--panel-2) 33%);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 22px; height: 22px; border-radius: 50%;
  background: #fff; border: 4px solid var(--mint); cursor: pointer;
  box-shadow: 0 4px 14px -4px var(--mint); transition: transform .15s;
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.12); }
input[type="range"]::-moz-range-thumb { width: 20px; height: 20px; border-radius: 50%; background: #fff; border: 4px solid var(--mint); cursor: pointer; }
#budget-out { min-width: 54px; text-align: center; font-weight: 700; color: var(--mint); font-variant-numeric: tabular-nums; }

.run-row { display: flex; align-items: center; gap: 16px; margin-top: 24px; flex-wrap: wrap; }
.run-hint { color: var(--muted); font-size: 0.85rem; }

/* ---------- pipeline ---------- */
.pipeline { display: flex; align-items: stretch; gap: 0; flex-wrap: wrap; justify-content: center; }
.pnode {
  position: relative; flex: 1 1 120px; min-width: 108px; max-width: 150px;
  display: flex; flex-direction: column; align-items: center; text-align: center; gap: 8px;
  padding: 6px 4px 10px;
  opacity: 0.35; filter: grayscale(0.6);
  transition: opacity .5s var(--ease), filter .5s var(--ease), transform .5s var(--ease);
}
.pnode.on { opacity: 1; filter: none; }
.pnode.pop { animation: pop 0.5s var(--ease); }
@keyframes pop { 0% { transform: scale(0.9); } 55% { transform: scale(1.06); } 100% { transform: scale(1); } }
.pnode-ico {
  position: relative; z-index: 3;
  width: 52px; height: 52px; border-radius: 15px;
  display: grid; place-items: center; font-size: 1.3rem;
  background: var(--panel-2); border: 1px solid var(--border);
  transition: border-color .4s, box-shadow .4s, background .4s;
}
.pnode.on .pnode-ico { border-color: var(--border-strong); box-shadow: 0 0 20px -6px var(--mint); background: var(--mint-soft); }
.pnode-label { font-size: 0.74rem; color: var(--muted); font-weight: 600; line-height: 1.25; }
.pnode.on .pnode-label { color: var(--text); }
.pnode-value { font-size: 1.15rem; font-weight: 800; color: var(--mint); font-variant-numeric: tabular-nums; min-height: 1.2em; }
/* connector: a continuous track from this icon's centre to the next, filled progressively.
   Both pseudo-elements sit behind the icons (which are z-index 3) so only the gaps show. */
.pnode::before, .pnode::after {
  content: ""; position: absolute; top: 31px; left: 50%; width: 100%; height: 3px;
  border-radius: 3px; pointer-events: none;
}
.pnode::after { z-index: 1; background: rgba(71, 215, 172, 0.16); }         /* base track */
.pnode::before {                                                            /* animated fill */
  z-index: 2;
  background: linear-gradient(90deg, var(--mint), var(--mint-2));
  box-shadow: 0 0 10px rgba(71, 215, 172, 0.65);
  transform: scaleX(0); transform-origin: left center;
  transition: transform .55s var(--ease);
}
.pnode.flow::before { transform: scaleX(1); }
.pnode:last-child::before, .pnode:last-child::after { display: none; }

/* ---------- results ---------- */
.results { display: flex; flex-direction: column; gap: 22px; }
.results.hidden { display: none; }
.results.show > * { animation: reveal 0.6s var(--ease) backwards; }

.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.kpi { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; padding: 22px 12px; text-align: center; }
.kpi-value { font-size: 2rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.kpi-value small { font-size: 1rem; color: var(--muted); }
.kpi-label { font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.6px; }
.kpi-hero { background: linear-gradient(150deg, rgba(71,215,172,0.18), rgba(124,131,255,0.12)); border-color: var(--border-strong); }
.kpi-hero .kpi-value { color: var(--mint); }

.viz-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.viz-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.viz-head h3 { margin: 0; font-size: 1rem; }
.info { width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center; font-size: 0.72rem; font-style: italic; font-weight: 700; color: var(--mint); background: var(--mint-soft); cursor: help; }

/* donut */
.donut-wrap { position: relative; width: 190px; height: 190px; margin: 0 auto; }
.donut { width: 100%; height: 100%; transform: rotate(-90deg); }
.donut circle { fill: none; stroke-width: 14; transition: stroke-dashoffset 1.1s var(--ease); }
.donut-center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.donut-center span { font-size: 2rem; font-weight: 800; }
.donut-center small { color: var(--muted); font-size: 0.75rem; }
.legend { display: flex; justify-content: center; gap: 16px; margin-top: 16px; flex-wrap: wrap; }
.legend-item { display: flex; align-items: center; gap: 7px; font-size: 0.82rem; color: var(--muted); }
.legend-swatch { width: 12px; height: 12px; border-radius: 4px; }

/* budget bar */
.budget-bar { margin-top: 10px; }
.budget-track { position: relative; margin-top: 26px; height: 30px; border-radius: 10px; background: var(--panel-2); overflow: visible; border: 1px solid var(--border); }
.budget-fill { height: 100%; width: 0; border-radius: 10px 6px 6px 10px; background: linear-gradient(90deg, var(--mint), var(--mint-2)); transition: width 1.1s var(--ease); box-shadow: 0 0 20px -4px var(--mint); }
.budget-marker { position: absolute; top: -6px; bottom: -6px; width: 2px; background: var(--req); left: 0; transition: left 1s var(--ease); }
.budget-marker span { position: absolute; top: -20px; left: 50%; transform: translateX(-50%); font-size: 0.68rem; color: var(--req); white-space: nowrap; }
.budget-scale { display: flex; justify-content: space-between; margin-top: 10px; font-size: 0.76rem; color: var(--muted); }
.budget-note { margin-top: 14px; font-size: 0.85rem; color: var(--text); }
.budget-note b { color: var(--mint); }

/* score bars */
.bars { display: flex; flex-direction: column; gap: 10px; }
.bar-row { display: grid; grid-template-columns: 92px 1fr 46px; align-items: center; gap: 12px; }
.bar-name { font-size: 0.82rem; font-weight: 600; color: var(--text); font-variant-numeric: tabular-nums; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { display: block; height: 16px; border-radius: 8px; background: #08061c; border: 1px solid var(--border); overflow: hidden; }
.bar-fill { display: block; box-shadow: 0 0 12px -2px currentColor; }
.bar-fill { height: 100%; width: 0; border-radius: 8px; transition: width 0.9s var(--ease); }
.bar-val { font-size: 0.8rem; color: var(--muted); text-align: right; font-variant-numeric: tabular-nums; }

/* chips */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 8px 14px; border-radius: 999px; font-size: 0.85rem; font-weight: 600;
  background: var(--mint-soft); border: 1px solid var(--border-strong); color: var(--mint);
  opacity: 0; transform: translateY(8px) scale(0.9); animation: chipin 0.45s var(--ease) forwards;
}
@keyframes chipin { to { opacity: 1; transform: none; } }
.chip.empty { background: var(--panel-2); border-color: var(--border); color: var(--muted); }

/* table */
.table-wrap { overflow-x: auto; }
.tc-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.tc-table th { text-align: left; padding: 10px 12px; color: var(--muted); font-weight: 600; font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 1px solid var(--border); }
.tc-table td { padding: 11px 12px; border-bottom: 1px solid var(--border); font-variant-numeric: tabular-nums; }
.tc-table tbody tr { opacity: 0; animation: rowin 0.4s var(--ease) forwards; }
@keyframes rowin { from { opacity: 0; transform: translateX(-8px); } to { opacity: 1; transform: none; } }
.src-badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 0.72rem; font-weight: 700; }
.src-Code { background: rgba(255,138,91,0.16); color: var(--code); }
.src-Req { background: rgba(124,131,255,0.16); color: var(--req); }
.src-Both { background: var(--mint-soft); color: var(--mint); }

/* config */
.config { background: #05030f; border: 1px solid var(--border); border-radius: 12px; padding: 16px; font-family: "SF Mono", Menlo, Consolas, monospace; font-size: 0.82rem; color: var(--mint-2); overflow-x: auto; line-height: 1.5; }

/* footer */
.footer { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 24px clamp(16px, 5vw, 48px); color: var(--muted); font-size: 0.8rem; border-top: 1px solid var(--border); flex-wrap: wrap; }
.foot-links { display: flex; gap: 16px; }
.footer a { color: var(--muted); text-decoration: none; }
.footer a:hover { color: var(--mint); }

/* toast */
.toast {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%) translateY(24px);
  background: #14112f; border: 1px solid var(--border-strong); color: var(--text);
  padding: 13px 20px; border-radius: 12px; font-size: 0.88rem; font-weight: 600;
  opacity: 0; pointer-events: none; transition: all .35s var(--ease); z-index: 50;
  box-shadow: var(--shadow);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.err { border-color: var(--danger); }

/* custom tooltip */
.tooltip {
  position: fixed; z-index: 60; max-width: 240px;
  background: #14112f; color: var(--text); border: 1px solid var(--border-strong);
  padding: 8px 12px; border-radius: 9px; font-size: 0.78rem; line-height: 1.4;
  opacity: 0; transform: translateY(4px); pointer-events: none; transition: opacity .18s, transform .18s;
  box-shadow: var(--shadow);
}
.tooltip.show { opacity: 1; transform: none; }

/* responsive */
@media (max-width: 760px) {
  .control-grid, .viz-grid { grid-template-columns: 1fr; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-sub { display: none; }
  .pnode::before, .pnode::after { display: none; }
  .topbar { flex-wrap: wrap; row-gap: 10px; }
  .top-links { flex-wrap: wrap; }
  .link-pill { padding: 7px 11px; font-size: 0.76rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001s !important; transition-duration: 0.001s !important; }
}