/* ===============================
   MPSoL Archive — style.css
   Modern Soviet Aesthetic
   =============================== */

:root {
  --bg: #0f0f12;
  --fg: #f0f0f0;
  --muted: #9a9a9a;
  --accent: #c9a86a;
  --border: #1f1f22;
  --card-bg: #18181b;
  --card-hover: #202024;
  --radius: 12px;
  --gap: 1.2rem;
  --transition: 0.25s ease;
  --font-body: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

/* ====================================
   Insignia Background
   ==================================== */
.background-insignia {
  position: fixed;
  top: 50%;
  left: 50%;
  width: 520px;
  height: 520px;
  background: url("/mpsowal/assets/covers/mpsol_gray.PNG") no-repeat center/contain;
  opacity: 0.06;
  transform: translate(-50%, -50%);
  z-index: 0;
  pointer-events: none;
  mix-blend-mode: lighten;
}

.navbar, .hero, main, footer {
  position: relative;
  z-index: 1;
}

/* Optional breathing animation for insignia */
@keyframes pulse-insignia {
  0%, 100% { opacity: 0.05; }
  50% { opacity: 0.08; }
}
.background-insignia.animate {
  animation: pulse-insignia 14s ease-in-out infinite;
}

/* ====================================
   Global Typography
   ==================================== */
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.5;
  font-size: 16px;
}

h1, h2, h3 {
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--fg);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: #e0c98b;
}

.muted {
  color: var(--muted);
  font-size: 0.9rem;
}
.small {
  font-size: 0.85rem;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1rem 0;
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem;
}

/* ====================================
   Buttons
   ==================================== */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #111;
  padding: 0.4rem 1.1rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background var(--transition), transform var(--transition);
}
.btn:hover {
  background: #e0c98b;
  transform: translateY(-2px);
}

/* ====================================
   Archive Grid & Cards
   ==================================== */
.archive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--gap);
  margin-top: 2rem;
}

.archive-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: background var(--transition), transform var(--transition);
}
.archive-card:hover {
  background: var(--card-hover);
  transform: translateY(-3px);
}

/* Thumbnail */
.thumb {
  aspect-ratio: 2/3;
  background: rgba(255,255,255,.04);
  overflow: hidden;
}
.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(1.05);
  transition: transform .25s ease;
}
.archive-card:hover .thumb img {
  transform: scale(1.012);
}

/* Card Content */
.card-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 1.2rem 0 1.2rem;
}
.doc-title {
  font-size: 1.05rem;
  margin: 0;
}
.series {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.2rem;
}

.blurb,
.metadata,
.summary {
  padding: 0 1.2rem;
}
.blurb {
  font-size: 0.95rem;
  margin: 0.5rem 0 0.8rem;
}
.metadata p,
.summary p {
  margin: 0.2rem 0;
  font-size: 0.9rem;
}
.summary {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.card-footer {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  padding: 0.8rem 1.2rem;
  font-size: 0.85rem;
}

/* Function icons */
.function-icon {
  width: 1.2rem;
  height: 1.2rem;
  border-radius: 3px;
  flex-shrink: 0;
}
.f1 { background: #d36850; }
.f2 { background: #c4a652; }
.f3 { background: #5578a3; }
.f4 { background: #7b9b64; }
.f5 { background: #af70b1; }
.f6 { background: #69a8a8; }
.f7 { background: #c48956; }
.f8 { background: #a65d7f; }
.f9 { background: #7b77c6; }
.f10 { background: #af5c5c; }
.f11 { background: #a2a569; }
.f12 { background: #8a8a8a; }

/* ====================================
   Responsive adjustments
   ==================================== */
@media (max-width: 600px) {
  .wrap { padding: 1rem; }
  .archive-grid { grid-template-columns: 1fr; }
  .btn { display: block; text-align: center; }
}