/* ============================================================
   portArgus — Patents page
   Reuses brand tokens from style.css (dark + Sentinel Amber).
   Patent certificate gallery · region filtering · lightbox.
   ============================================================ */

/* === HERO === */
.pat-hero {
  padding: var(--sp-lg) 0 var(--sp-md);
  border-bottom: 1px solid var(--clr-border);
  background:
    radial-gradient(120% 80% at 80% -10%, var(--clr-amber-glow), transparent 60%),
    var(--clr-bg);
}
.pat-hero-eyebrow {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-amber);
  margin-bottom: 0.5rem;
}
.pat-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  text-transform: uppercase;
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  line-height: 1.0;
  letter-spacing: -0.01em;
  margin-bottom: var(--sp-sm);
}
.pat-hero h1 .amber { color: var(--clr-amber); }
.pat-hero-sub {
  max-width: 80ch;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--clr-text-muted);
}

/* === STATS STRIP === */
.pat-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-lg);
  margin-top: var(--sp-md);
}
.pat-stat { display: flex; align-items: baseline; gap: 0.5rem; }
.pat-stat .n {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.8rem;
  color: var(--clr-amber);
  line-height: 1;
}
.pat-stat .l {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.8rem;
  color: var(--clr-text-muted);
}

/* === STICKY TOOLBAR === */
.pat-toolbar {
  position: sticky;
  top: var(--nav-h);
  z-index: 40;
  background: var(--nav-bg);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--clr-border);
}
.pat-toolbar-inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: var(--sp-sm) var(--sp-lg);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.pat-pill {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.82rem;
  padding: 0.42rem 0.95rem;
  border: 1px solid var(--clr-border-mid);
  border-radius: 999px;
  background: transparent;
  color: var(--clr-text-muted);
  cursor: pointer;
  transition: all 0.16s ease;
  white-space: nowrap;
}
.pat-pill:hover { color: var(--clr-text); border-color: var(--clr-text-dim); }
.pat-pill.active { background: var(--clr-amber); border-color: var(--clr-amber); color: #0A0A0A; }
.pat-pill .count { opacity: 0.6; margin-left: 0.35rem; font-size: 0.78em; }

/* === GALLERY === */
.pat-gallery { padding: var(--sp-xl) 0 var(--sp-2xl); }
.pat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--sp-lg);
}
.pat-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--clr-border);
  background: var(--clr-bg-2);
  color: var(--clr-text);   /* button defaults to canvastext (black) — inherit theme text instead */
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}
.pat-card:hover {
  transform: translateY(-4px);
  border-color: var(--clr-amber);
  box-shadow: 0 14px 40px -18px rgba(0,0,0,0.5);
}
.pat-card-imgwrap {
  position: relative;
  aspect-ratio: 3 / 4;
  background: #ffffff;
  overflow: hidden;
}
.pat-card-imgwrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 0%;
  transition: transform 0.25s ease;
}
.pat-card:hover .pat-card-imgwrap img { transform: scale(1.04); }
.pat-card-region {
  position: absolute;
  top: 0.6rem;
  left: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 0.66rem;
  text-transform: uppercase;
  color: #0A0A0A;
  background: var(--clr-amber);
  padding: 0.16rem 0.5rem;
  border-radius: 3px;
}
.pat-card-zoom {
  position: absolute;
  bottom: 0.6rem;
  right: 0.6rem;
  width: 30px; height: 30px;
  display: grid; place-items: center;
  background: rgba(10,10,10,0.6);
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.18s ease;
}
.pat-card-zoom svg { width: 15px; height: 15px; stroke: #fff; }
.pat-card:hover .pat-card-zoom { opacity: 1; }
.pat-card-body {
  padding: var(--sp-sm) var(--sp-md) var(--sp-md);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.pat-card-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.12rem;
  line-height: 1.1;
}
.pat-card-num {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  letter-spacing: 0.02em;
}

/* === LIGHTBOX === */
.pat-lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--sp-lg);
}
.pat-lightbox.open { display: flex; }
.pat-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.82);
  backdrop-filter: blur(4px);
}
.pat-lightbox-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-sm);
  max-height: 92vh;
}
.pat-lightbox-inner img {
  max-width: min(620px, 90vw);
  max-height: 78vh;
  object-fit: contain;
  background: #fff;
  border-radius: 4px;
  box-shadow: 0 30px 80px -20px rgba(0,0,0,0.8);
}
.pat-lightbox-caption {
  text-align: center;
  color: var(--clr-text);
}
.pat-lightbox-caption .p {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
}
.pat-lightbox-caption .n { color: var(--clr-text-muted); font-size: 0.85rem; }
.pat-lightbox-close {
  position: fixed;
  top: var(--sp-md);
  right: var(--sp-md);
  width: 42px; height: 42px;
  border: 1px solid rgba(255,255,255,0.3);
  background: rgba(10,10,10,0.6);
  color: #fff;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.3rem;
  display: grid; place-items: center;
  transition: all 0.15s ease;
}
.pat-lightbox-close:hover { border-color: var(--clr-amber); color: var(--clr-amber); }

/* === CTA (reuses .prod-cta look) === */
.pat-cta {
  border-top: 1px solid var(--clr-border);
  background:
    radial-gradient(100% 120% at 50% 0%, var(--clr-amber-glow), transparent 60%),
    var(--clr-bg-2);
  padding: var(--sp-2xl) 0;
  text-align: center;
}
.pat-cta h2 {
  font-family: var(--font-display);
  font-weight: 900;
  text-transform: uppercase;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.02;
  margin-bottom: var(--sp-sm);
}
.pat-cta p {
  max-width: 52ch;
  margin: 0 auto var(--sp-lg);
  color: var(--clr-text-muted);
  font-size: 1.05rem;
  line-height: 1.55;
}

@media (max-width: 600px) {
  .pat-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: var(--sp-md); }
}