:root {
  /* Opsette brand */
  --bg: #fafafa;
  --bg-card: #ffffff;
  --fg: #1a1a1a;
  --fg-muted: #666666;
  --border: #e5e5e5;
  --border-soft: #ececec;
  --primary: #2f4f46;
  --primary-light: #426f62;
  --gold: #cfae60;
  --gold-light: #dbc287;
  --gold-dark: #c2993a;

  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-card-hover: 0 8px 25px rgba(47, 79, 70, 0.10);
  --radius: 14px;
  --radius-lg: 20px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; }

/* ---------- Header ---------- */
.site-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(8px);
}

.site-header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand-mark {
  height: 56px;
  width: auto;
  display: block;
}

@media (max-width: 600px) {
  .brand-mark { height: 44px; }
}

/* ---------- Hero ---------- */
.hero {
  padding: 5rem 1.5rem 3.5rem;
  text-align: center;
  background:
    radial-gradient(ellipse at top, rgba(207, 174, 96, 0.08), transparent 60%),
    var(--bg);
}

.hero-inner {
  max-width: 720px;
  margin: 0 auto;
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-dark);
  margin-bottom: 1.1rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 6.5vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin: 0 0 0.85rem;
  color: var(--fg);
  line-height: 1.1;
}

.tagline {
  font-size: clamp(1.05rem, 2.2vw, 1.2rem);
  color: var(--fg-muted);
  margin: 0;
  font-weight: 400;
}

/* ---------- Tools grid ---------- */
main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin: 0 0 2rem;
}

.filter-btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--fg-muted);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 1.05rem;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.filter-btn:hover {
  border-color: var(--primary-light);
  color: var(--primary);
}

.filter-btn.is-active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.filter-btn:focus-visible {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
}

.empty-state {
  text-align: center;
  color: var(--fg-muted);
  padding: 3rem 1rem;
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.card[hidden] {
  display: none;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-card);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
  overflow: hidden;
}

.card:hover,
.card:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--primary-light);
  outline: none;
}

/* Card media (image or letter fallback) */
.card-media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--card-accent, var(--primary)) 0%, color-mix(in srgb, var(--card-accent, var(--primary)) 70%, #000) 100%);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-icon {
  width: 80px;
  height: 80px;
  filter: brightness(0) invert(1);
  opacity: 0.95;
  display: block;
}

.card-body {
  padding: 1.1rem 1.25rem 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  border-top: 1px solid var(--border-soft);
}

.card-title {
  font-size: 1.08rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.card-desc {
  font-size: 0.93rem;
  color: var(--fg-muted);
  margin: 0;
  line-height: 1.45;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-card);
}

.site-footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2.25rem 1.5rem 2.5rem;
  text-align: center;
  color: var(--fg-muted);
}

.footer-brand {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
}

.footer-brand a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.footer-brand a:hover { text-decoration: underline; }

.footer-brand .dot {
  margin: 0 0.6rem;
  color: var(--border);
}

.muted {
  margin: 0;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .site-header-inner { padding: 14px 18px; }
  .hero { padding: 3rem 1.25rem 2.25rem; }
  main { padding: 1.5rem 1.25rem 3rem; }
  .grid { grid-template-columns: 1fr; gap: 1rem; }
}