/* Shared NVIDIA Research style for PAR project pages.
   Usage: <link rel="stylesheet" href="../assets/nvidia-project.css"> */

:root {
  --nv-green: #76b900;
  --nv-green-dark: #5e9400;
  --nv-black: #000000;
  --nv-ink: #1a1a1a;
  --nv-ink-2: #444444;
  --nv-ink-3: #666666;
  --nv-rule: #e5e5e5;
  --nv-bg-alt: #f7f7f7;
  --nv-white: #ffffff;
  --nv-max: 1080px;
  --nv-font: "NVIDIA Sans", "NVIDIA", Arial, Helvetica, sans-serif;
  --nv-mono: "Roboto Mono", Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.nv {
  margin: 0;
  font-family: var(--nv-font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--nv-ink);
  background: var(--nv-white);
  -webkit-font-smoothing: antialiased;
}

.nv a { color: var(--nv-green-dark); text-decoration: none; }
.nv a:hover { text-decoration: underline; }

.nv-container { max-width: var(--nv-max); margin: 0 auto; padding: 0 24px; }

/* Top bar */
.nv-topbar {
  background: var(--nv-black);
  border-bottom: 4px solid var(--nv-green);
}
.nv-topbar .nv-container {
  display: flex; align-items: center; justify-content: space-between;
  height: 56px;
}
.nv-topbar a { color: var(--nv-white); font-weight: 700; letter-spacing: .02em; }
.nv-topbar a:hover { color: var(--nv-green); text-decoration: none; }
.nv-brand { display: flex; align-items: center; gap: 12px; font-size: 15px; }
.nv-brand .nv-brand-mark { color: var(--nv-green); font-weight: 800; letter-spacing: .08em; }
.nv-brand .nv-brand-sep { width: 1px; height: 20px; background: #555; }
.nv-topnav { display: flex; gap: 22px; font-size: 14px; }

/* Hero */
.nv-hero {
  background: var(--nv-black);
  color: var(--nv-white);
  padding: 64px 0 56px;
}
.nv-eyebrow {
  display: inline-block;
  color: var(--nv-green);
  font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .14em;
  margin-bottom: 14px;
}
.nv-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(30px, 4.4vw, 48px);
  line-height: 1.12; font-weight: 800; letter-spacing: -.01em;
}
.nv-hero .nv-lede { max-width: 820px; font-size: 19px; color: #d0d0d0; margin: 0; }
.nv-authors { margin: 18px 0 6px; font-size: 17px; }
.nv-authors a { color: var(--nv-white); border-bottom: 1px solid #555; }
.nv-authors a:hover { border-color: var(--nv-green); text-decoration: none; }
.nv-affil { font-size: 14px; color: #aaaaaa; }
.nv-venue {
  display: inline-block; margin-top: 16px; padding: 4px 10px;
  border: 1px solid var(--nv-green); color: var(--nv-green);
  font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
}

/* Buttons */
.nv-buttons { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.nv-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px;
  background: var(--nv-green); color: var(--nv-black) !important;
  font-weight: 700; font-size: 15px;
  border: 2px solid var(--nv-green);
  transition: background .15s, color .15s;
}
.nv-btn:hover { background: transparent; color: var(--nv-green) !important; text-decoration: none; }
.nv-btn.nv-btn-outline { background: transparent; color: var(--nv-white) !important; border-color: #666; }
.nv-btn.nv-btn-outline:hover { border-color: var(--nv-green); color: var(--nv-green) !important; }

/* Sections */
.nv-section { padding: 56px 0; }
.nv-section.nv-alt { background: var(--nv-bg-alt); }
.nv-section h2 {
  margin: 0 0 20px; font-size: 28px; font-weight: 800; line-height: 1.2;
}
.nv-section h2::after {
  content: ""; display: block; width: 48px; height: 4px;
  background: var(--nv-green); margin-top: 12px;
}
.nv-section h3 { font-size: 20px; margin: 28px 0 10px; }
.nv-section p { color: var(--nv-ink-2); max-width: 860px; }

.nv-figure { margin: 24px 0; }
.nv-figure img, .nv-figure video { display: block; width: 100%; height: auto; }
.nv-figure figcaption { font-size: 14px; color: var(--nv-ink-3); margin-top: 8px; }

.nv-bibtex {
  background: var(--nv-ink); color: #e6e6e6;
  padding: 18px 20px; overflow-x: auto;
  font-family: var(--nv-mono); font-size: 13.5px; line-height: 1.5;
  border-left: 4px solid var(--nv-green);
}

/* Project cards (used by /projects/ index) */
.nv-grid {
  display: grid; gap: 24px;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}
.nv-card {
  display: flex; flex-direction: column;
  background: var(--nv-white);
  border: 1px solid var(--nv-rule);
  border-top: 4px solid var(--nv-black);
  padding: 22px 22px 20px;
  color: var(--nv-ink) !important;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}
.nv-card:hover {
  border-top-color: var(--nv-green);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,.08);
  text-decoration: none !important;
}
.nv-card .nv-card-name { font-size: 22px; font-weight: 800; margin: 0 0 6px; }
.nv-card .nv-card-title { font-size: 15px; color: var(--nv-ink-2); margin: 0 0 14px; flex: 1; }
.nv-card .nv-card-meta {
  font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em;
  color: var(--nv-green-dark);
}
.nv-card .nv-card-cta { margin-top: 10px; font-size: 14px; font-weight: 700; color: var(--nv-black); }
.nv-card:hover .nv-card-cta { color: var(--nv-green-dark); }

/* Footer */
.nv-footer {
  background: var(--nv-black); color: #999999;
  padding: 36px 0 44px; font-size: 13.5px;
  border-top: 4px solid var(--nv-green);
}
.nv-footer a { color: #cccccc; }
.nv-footer a:hover { color: var(--nv-green); }
.nv-footer .nv-legal { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 10px 0 0; padding: 0; list-style: none; }
.nv-footer .nv-copy { margin: 0; }

@media (max-width: 640px) {
  .nv-topnav { display: none; }
  .nv-hero { padding: 44px 0 40px; }
  .nv-section { padding: 40px 0; }
}