/* ============================================================
   HPC MiniWeather — visualization page
   Deep-green "weather/forest" palette so it sits next to the
   sibling Shop project (green brand) without being identical.
   ============================================================ */

:root {
  --bg:             #FFFFFF;
  --bg-soft:        #F6F8F7;
  --bg-elevated:    #FFFFFF;
  --fg:             #0F1F18;
  --fg-soft:        #1E3A2C;
  --muted:          #5F6B65;
  --border:         #E1E7E4;
  --border-strong:  #C5D0CA;

  --brand:          #0b3d2e;   /* deep forest green */
  --brand-strong:   #062a20;
  --brand-soft:     #C6DBD0;
  --accent:         #10B981;   /* mint accent for highlights */
  --accent-warm:    #F59E0B;
  --accent-cool:    #06B6D4;

  /* heat colormap stops (used for the live sim + colorbar) */
  --cmap-0: #0a1230;   /* deep blue (cold) */
  --cmap-1: #1d3a8a;
  --cmap-2: #2563EB;
  --cmap-3: #06B6D4;
  --cmap-4: #10B981;
  --cmap-5: #F59E0B;
  --cmap-6: #DC2626;   /* deep red (hot) */

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(15,31,24,0.06);
  --shadow-md: 0 8px 24px rgba(15,31,24,0.08), 0 2px 6px rgba(15,31,24,0.04);
  --shadow-brand: 0 8px 22px rgba(11,61,46,0.25);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --container: 1180px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  color: var(--fg);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; border-bottom: 1px solid transparent; transition: color 120ms, border-color 120ms; }
a:hover { color: var(--brand); border-bottom-color: currentColor; }

h1, h2, h3, h4 { font-family: var(--font-sans); font-weight: 800; letter-spacing: -0.02em; color: var(--fg); margin: 0 0 0.5em; }
h1 { font-size: clamp(2rem, 4vw + 1rem, 3.3rem); line-height: 1.06; }
h2 { font-size: clamp(1.4rem, 1.6vw + 1rem, 2.1rem); line-height: 1.15; }
h3 { font-size: 1.1rem; font-weight: 700; }

p { margin: 0 0 1em 0; }

code, .mono { font-family: var(--font-mono); font-size: 0.9em; }
.muted { color: var(--muted); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 1.25rem; }
.row { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }

/* The 5-color report stripe — reused here for visual continuity. */
.stripe {
  height: 5px;
  background: linear-gradient(90deg,
    var(--cmap-1) 0% 20%,
    var(--cmap-2) 20% 40%,
    var(--accent-cool) 40% 60%,
    var(--accent) 60% 80%,
    var(--accent-warm) 80% 100%);
}

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 30;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header .row { padding: 0.85rem 0; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 0.7rem; }
.brand .mark {
  width: 40px; height: 40px; border-radius: 999px;
  border: 2px solid var(--brand); color: var(--brand);
  display: grid; place-items: center; background: var(--bg);
}
.brand .wordmark { line-height: 1.1; display: flex; flex-direction: column; }
.brand .wordmark span { font-weight: 800; font-size: 1.1rem; color: var(--brand); letter-spacing: -0.01em; }
.brand .wordmark small { font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.15em; color: var(--muted); font-weight: 600; }

.nav { display: flex; gap: 1.4rem; }
.nav a { color: var(--muted); font-weight: 500; font-size: 0.95rem; }
.nav a:hover { color: var(--brand); }

/* ===== Hero ===== */
.hero { padding: 4rem 0 3.5rem; text-align: center; background: var(--bg); }
.hero .eyebrow {
  display: inline-block; padding: 0.35em 0.9em;
  border: 1px solid var(--brand-soft); border-radius: 999px;
  background: rgba(11,61,46,0.05); color: var(--brand);
  font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.16em;
  margin-bottom: 1.25rem;
}
.hero h1 .accent { color: var(--brand); }
.hero .lede { max-width: 62ch; margin: 0 auto 1.5rem; color: var(--muted); font-size: 1.05rem; }
.hero-actions { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 0.5em;
  padding: 0.65em 1.3em;
  border: 1px solid transparent; border-radius: var(--radius-sm);
  font: inherit; font-weight: 600; font-size: 0.95rem;
  cursor: pointer; transition: all 120ms ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary  { background: var(--brand); color: #fff; border-color: var(--brand); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--brand-strong); border-color: var(--brand-strong); color: #fff; }
.btn-secondary { background: #fff; color: var(--fg); border-color: var(--border-strong); }
.btn-secondary:hover { border-color: var(--brand); color: var(--brand); }

/* ===== Sections ===== */
.section { padding: 4rem 0; }
.section-muted { background: var(--bg-soft); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; margin-bottom: 2rem; flex-wrap: wrap; }
.section-head .eyebrow {
  display: inline-block;
  font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--brand); margin-bottom: 0.5rem;
}

/* ===== Simulation layout ===== */
.sim-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 1fr);
  gap: 1.5rem;
  align-items: start;
}
@media (max-width: 900px) {
  .sim-layout { grid-template-columns: 1fr; }
}

.sim-canvas-wrap {
  position: relative;
  background: #07101a;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}
#sim {
  display: block;
  width: 100%;
  height: auto;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.sim-overlay {
  position: absolute; top: 12px; left: 12px;
  display: flex; gap: 0.5rem; flex-wrap: wrap;
}
.sim-stat {
  background: rgba(0,0,0,0.55);
  color: #fff;
  padding: 0.3em 0.7em;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  display: inline-flex; align-items: center; gap: 0.5em;
  backdrop-filter: blur(4px);
}
.sim-stat .lbl { color: rgba(255,255,255,0.65); text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.65rem; }

.colorbar {
  position: absolute; right: 14px; bottom: 14px;
  display: flex; align-items: center; gap: 0.5em;
  color: #fff; font-size: 0.72rem;
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}
.colorbar .cb {
  width: 120px; height: 10px; border-radius: 999px;
  background: linear-gradient(90deg,
    var(--cmap-0), var(--cmap-1), var(--cmap-2),
    var(--cmap-3), var(--cmap-4), var(--cmap-5), var(--cmap-6));
}

/* ===== Sim controls ===== */
.sim-controls {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex; flex-direction: column; gap: 1.25rem;
}
.ctrl-block { display: flex; flex-direction: column; gap: 0.45rem; }
.ctrl-block label {
  font-size: 0.78rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--fg-soft);
  display: flex; justify-content: space-between; align-items: center;
}
.ctrl-block label .val { color: var(--brand); font-weight: 600; font-size: 0.85rem; letter-spacing: 0; text-transform: none; }
.ctrl-block input[type=range] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 4px;
  background: var(--border-strong); border-radius: 999px; outline: none;
}
.ctrl-block input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 16px; height: 16px; border-radius: 999px;
  background: var(--brand); cursor: pointer;
  box-shadow: var(--shadow-sm);
}
.ctrl-block input[type=range]::-moz-range-thumb {
  width: 16px; height: 16px; border-radius: 999px;
  background: var(--brand); cursor: pointer; border: none;
}

.seg {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem;
}
.seg button {
  font: inherit; cursor: pointer;
  background: #fff; color: var(--fg);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.45em 0.7em; font-size: 0.82rem; font-weight: 600;
  text-align: center;
  transition: all 120ms;
}
.seg button:hover { border-color: var(--brand); color: var(--brand); }
.seg button.active {
  background: var(--brand); color: #fff; border-color: var(--brand);
  box-shadow: var(--shadow-brand);
}

.ctrl-row { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.ctrl-row .btn { flex: 1; }

.explainer {
  border-top: 1px solid var(--border);
  padding-top: 0.85rem;
  margin-top: 0.25rem;
}
.explainer summary {
  cursor: pointer; font-weight: 600; color: var(--brand); font-size: 0.9rem;
  list-style: none;
}
.explainer summary::marker { display: none; }
.explainer summary::-webkit-details-marker { display: none; }
.explainer summary::before { content: "▸ "; color: var(--muted); }
.explainer[open] summary::before { content: "▾ "; }
.explainer p { font-size: 0.88rem; color: var(--muted); margin-top: 0.7rem; }
.explainer code { background: var(--bg-soft); padding: 0.1em 0.4em; border-radius: 4px; }

/* ===== Cluster output cards ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: 0.6rem;
}
.card h3 { margin: 0; color: var(--brand); }
.card img {
  width: 100%; height: auto;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--border);
}

/* ===== Backend cards ===== */
.backends {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}
.backend {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex; flex-direction: column; gap: 0.5rem;
}
.backend .dot { width: 12px; height: 12px; border-radius: 999px; display: inline-block; }
.backend strong { font-size: 1.05rem; }
.backend code { color: var(--brand); font-size: 0.82rem; display: inline-block; margin-top: 0.25rem; padding: 0.2em 0.5em; background: var(--bg-soft); border-radius: 4px; }

/* ===== Footer ===== */
.site-footer { background: var(--bg-soft); border-top: 1px solid var(--border); }
.site-footer .legal { padding: 1rem 0 1.5rem; font-size: 0.8rem; color: var(--muted); border-top: 1px solid var(--border); }

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