/* ================================================================
   QUANTUM PORTFOLIO — front end
   Theme shared with asheth-git.github.io: deep-space dark surface
   cards, single-hue research-teal accent, Quicksand / Nunito /
   Red Hat Mono. No dual-tone gradients; lighter and darker shades
   of one hue carry all emphasis.
   ================================================================ */

:root {
  --bg:        #04070c;
  --bg-2:      #070c14;
  --surface:   #0d1521;
  --surface-2: #0a101a;
  --ink:       #d7e3ee;
  --ink-2:     #aebfcd;
  --muted:     #7d93a8;
  --faint:     #46607a;
  --line:      #1b2838;
  --line-2:    #16202e;
  --red:       #ff5f57;
  --green:     #28c840;

  --accent:      #2fb8ab;
  --accent-2:    #1d7d74;
  --accent-hot:  #6adcd0;
  --accent-soft: rgba(47, 184, 171, 0.1);
  --ramp: linear-gradient(90deg,
            #0b3f3a 0%, #1d7d74 35%, #2fb8ab 68%, #9fe8df 100%);

  --radius: 18px;
  --shadow:    0 1px 2px rgba(0, 0, 0, 0.45), 0 10px 28px -12px rgba(0, 0, 0, 0.65);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4), 0 5px 16px -10px rgba(0, 0, 0, 0.6);

  --ff-display: "Quicksand", "Segoe UI", system-ui, sans-serif;
  --ff-body: "Nunito", system-ui, -apple-system, "Segoe UI", sans-serif;
  --ff-mono: "Red Hat Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --lh: 1.66;
}

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

html, body { height: 100%; }
body {
  background:
    radial-gradient(900px 520px at 88% -8%, rgba(47, 184, 171, 0.06) 0%, transparent 60%),
    var(--bg);
  color: var(--ink);
  font-family: var(--ff-body);
  font-size: 15px;
  line-height: var(--lh);
  -webkit-font-smoothing: antialiased;
}

.mono { font-family: var(--ff-mono); }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hot); }
.katex { font-size: 1em; }
sub, sup { line-height: 0; }
::selection { background: var(--accent); color: var(--bg); }

/* ---------------- TOP BAR ---------------- */
#topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 1.2rem;
  padding: 0.8rem 1.6rem;
  background: rgba(4, 7, 12, 0.85);
  backdrop-filter: saturate(150%) blur(12px);
  -webkit-backdrop-filter: saturate(150%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand {
  font-family: var(--ff-display); font-weight: 700;
  letter-spacing: 0.08em; font-size: 0.95rem;
  display: inline-flex; align-items: center; gap: 10px;
}
.brand::before {
  content: ""; width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.mode-badge {
  font-size: 0.62rem; letter-spacing: 0.1em; text-transform: uppercase;
  font-weight: 500;
  color: var(--accent); background: var(--accent-soft);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 0.25rem 0.7rem;
}
.mode-badge.live { color: var(--accent-hot); }
.topbar-status {
  margin-left: auto;
  display: flex; align-items: center; gap: 0.45rem;
  font-size: 0.68rem; color: var(--muted); letter-spacing: 0.08em;
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--faint);
  transition: background 0.3s, box-shadow 0.3s;
}
.status-dot.running { background: var(--accent); box-shadow: 0 0 8px var(--accent); animation: pulse 1.2s ease-in-out infinite; }
.status-dot.done    { background: var(--green);  box-shadow: 0 0 8px var(--green); }
@keyframes pulse { 50% { opacity: 0.35; } }

/* ---------------- LAYOUT ---------------- */
#layout {
  display: grid;
  grid-template-columns: 290px 1fr;
  min-height: calc(100vh - 52px);
}

/* ---------------- SIDEBAR ---------------- */
#sidebar {
  border-right: 1px solid var(--line);
  background: var(--surface-2);
  padding: 1.4rem 1.2rem 1rem;
  display: flex; flex-direction: column; gap: 1.3rem;
  font-size: 0.74rem;
}
.rack { min-width: 0; }
.rack-head {
  font-family: var(--ff-mono);
  color: var(--accent); font-size: 0.62rem; letter-spacing: 0.14em;
  text-transform: uppercase; font-weight: 500;
  margin-bottom: 0.65rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid var(--line);
}
.chip-row { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.chip {
  font-family: var(--ff-mono); font-size: 0.66rem;
  letter-spacing: 0.04em;
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 0.4rem 0.85rem; cursor: pointer;
  transition: all 0.15s ease;
}
.chip:hover { color: var(--ink); border-color: var(--accent-2); transform: translateY(-1px); }
.chip.active {
  color: var(--bg); background: var(--accent); border-color: transparent;
  font-weight: 600;
  box-shadow: 0 4px 12px -4px rgba(47, 184, 171, 0.45);
}
#universeInput {
  width: 100%; resize: vertical;
  font-family: var(--ff-mono); font-size: 0.7rem; line-height: 1.6;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line); border-radius: 10px;
  padding: 0.6rem 0.7rem;
  outline: none;
  transition: border-color 0.15s;
}
#universeInput:focus { border-color: var(--accent-2); }
.rack-note { color: var(--faint); font-size: 0.62rem; margin-top: 0.45rem; }
.date-row { display: flex; gap: 0.5rem; }
.date-row input {
  flex: 1; min-width: 0;
  font-family: var(--ff-mono); font-size: 0.66rem;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line); border-radius: 10px;
  padding: 0.45rem 0.55rem;
  outline: none;
  color-scheme: dark;
}

.ctrl {
  display: grid; grid-template-columns: 1fr auto; gap: 0.3rem 0.8rem;
  align-items: center;
  margin-bottom: 0.85rem;
  font-family: var(--ff-mono);
}
.ctrl label { grid-column: 1 / -1; color: var(--muted); letter-spacing: 0.04em; }
.ctrl output { color: var(--accent); min-width: 3.4em; text-align: right; }

input[type="range"] {
  -webkit-appearance: none; appearance: none;
  flex: 1; height: 3px; background: var(--line);
  outline: none; border-radius: 2px;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  cursor: pointer; border: none;
}
input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  cursor: pointer; border: none;
}

.btn {
  display: block; width: 100%;
  font-family: var(--ff-mono); font-size: 0.72rem;
  letter-spacing: 0.05em; text-transform: uppercase;
  padding: 0.75rem 1rem; border-radius: 10px;
  border: 1px solid var(--line);
  cursor: pointer; background: var(--surface); color: var(--ink);
  transition: transform 0.15s ease, box-shadow 0.15s ease,
              border-color 0.15s ease, color 0.15s ease;
  text-align: center;
}
.btn:hover:not(:disabled) {
  border-color: var(--accent); color: var(--accent);
  transform: translateY(-1px); box-shadow: var(--shadow-sm);
}
.btn-primary {
  background: var(--accent); color: var(--bg);
  border-color: transparent; font-weight: 600;
}
.btn-primary:hover:not(:disabled) {
  color: var(--bg);
  box-shadow: 0 10px 22px -8px rgba(47, 184, 171, 0.5);
}
.btn-primary:disabled { opacity: 0.45; cursor: default; }
.btn-ghost { color: var(--ink-2); margin-top: 0.55rem; }

.sidebar-foot {
  margin-top: auto; padding-top: 1rem;
  font-family: var(--ff-mono);
  color: var(--faint); font-size: 0.6rem; letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ---------------- MAIN ---------------- */
#main {
  padding: 1.6rem 1.8rem 1.2rem;
  display: flex; flex-direction: column; gap: 1.4rem;
  min-width: 0;
}

/* physics strip */
.physics-strip {
  position: relative; overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  padding: 1.2rem 1.5rem;
}
.physics-strip::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--ramp);
}
.physics-eq { margin-bottom: 0.6rem; overflow-x: auto; }
.physics-text { color: var(--ink-2); font-size: 0.92rem; max-width: 72rem; }

/* metric cards */
.cards {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.9rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line); border-radius: 14px;
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.card-label {
  font-family: var(--ff-mono);
  color: var(--muted); font-size: 0.6rem;
  letter-spacing: 0.1em; text-transform: uppercase;
}
.card-value {
  font-family: var(--ff-display); font-weight: 700;
  color: var(--accent); font-size: 1.4rem;
  margin: 0.25rem 0 0.1rem; letter-spacing: -0.01em;
  transition: color 0.3s;
}
.card-value.warn { color: var(--red); }
.card-sub {
  font-family: var(--ff-mono);
  color: var(--faint); font-size: 0.58rem; letter-spacing: 0.06em;
}

/* panels */
.panel {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  padding: 1.1rem 1.3rem 1.2rem;
  min-width: 0;
}
.panel-bar {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 0.9rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--line);
}
.panel-title {
  font-family: var(--ff-display); font-weight: 600;
  color: var(--ink); font-size: 0.95rem;
}
.panel-read { font-family: var(--ff-mono); color: var(--muted); font-size: 0.66rem; }
.panel-read output { color: var(--accent); }

.schedule-track {
  height: 4px; border-radius: 2px;
  background: var(--line);
  overflow: hidden; margin-bottom: 0.7rem;
}
.schedule-fill {
  height: 100%; width: 0%;
  background: var(--accent);
  transition: width 0.12s linear;
}
.trace-reads {
  display: flex; gap: 1.8rem; flex-wrap: wrap;
  font-family: var(--ff-mono);
  color: var(--muted); font-size: 0.66rem;
  margin-bottom: 0.6rem;
}
.trace-reads output { color: var(--accent); }
.read-best output { color: var(--accent-hot); }
#traceCanvas {
  width: 100%; height: 130px; display: block;
  border: 1px solid var(--line); border-radius: 12px;
  background: #030509;
}

.panel-row {
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 1.4rem;
  align-items: start;
}

/* sector bars */
.bars { display: flex; flex-direction: column; gap: 0.7rem; }
.bar-row { font-size: 0.72rem; }
.bar-label {
  display: flex; justify-content: space-between;
  font-family: var(--ff-mono);
  color: var(--muted); margin-bottom: 0.3rem;
}
.bar-label b { color: var(--ink); font-weight: 600; font-family: var(--ff-body); }
.bar-track { height: 7px; background: var(--line); border-radius: 4px; overflow: hidden; }
.bar-fill {
  height: 100%; border-radius: 4px;
  background: var(--accent);
  transition: width 0.5s ease;
}
.bar-fill.over { background: var(--red); }

/* asset table */
#assetTableWrap { overflow-x: auto; }
#assetTable { width: 100%; border-collapse: collapse; font-size: 0.76rem; }
#assetTable th {
  text-align: left;
  font-family: var(--ff-mono);
  color: var(--faint);
  font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase;
  font-size: 0.6rem;
  padding: 0.3rem 0.6rem 0.5rem 0;
  border-bottom: 2px solid var(--line);
}
#assetTable td {
  padding: 0.5rem 0.6rem 0.5rem 0;
  border-bottom: 1px solid var(--line-2);
  color: var(--ink-2);
}
#assetTable tbody tr:hover td { background: var(--surface-2); }
#assetTable td:first-child { font-family: var(--ff-mono); color: var(--accent); font-weight: 600; }
#assetTable .num { text-align: right; }
#assetTable td.num { font-family: var(--ff-mono); color: var(--ink); }
#assetTable td.neg { color: var(--red); }
.sector-tag {
  display: inline-block;
  font-family: var(--ff-mono);
  font-size: 0.58rem; letter-spacing: 0.04em;
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 0.1rem 0.55rem;
  color: var(--accent);
}
.empty { color: var(--faint); font-family: var(--ff-mono); font-size: 0.68rem; }

/* footer */
#appfoot {
  margin-top: auto;
  font-family: var(--ff-mono);
  color: var(--faint); font-size: 0.62rem; line-height: 1.9;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

/* ---------------- RESPONSIVE ---------------- */
@media (max-width: 1200px) {
  .cards { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 950px) {
  #layout { grid-template-columns: 1fr; }
  #sidebar { border-right: none; border-bottom: 1px solid var(--line); }
  .panel-row { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  #main { padding: 1.1rem 1rem 1rem; }
}

/* accessibility */
button:focus-visible, a:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent-hot); outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}