/* ============================================================
   interfaces.css — Interfaces catalog page.
   Builds on platform.css (same .platform-page theme scope and
   shared design tokens from base.css). Only the catalog-specific
   components live here.
   ============================================================ */

/* ---- Per-category accent (drives icons, monograms, chips) ---- */
.platform-page .if-accent-primary {
  --if-accent: var(--primary-light);
  --if-accent-rgb: 176, 198, 255;
}

.platform-page .if-accent-secondary {
  --if-accent: var(--secondary-color);
  --if-accent-rgb: 0, 244, 254;
}

.platform-page .if-accent-tertiary {
  --if-accent: var(--pf-tertiary);
  --if-accent-rgb: 204, 189, 255;
}

.platform-page .if-accent-quaternary {
  --if-accent: var(--success);
  --if-accent-rgb: 16, 185, 129;
}

/* ============================================================
   Hero category quick-nav
   ============================================================ */
.platform-page .if-quicknav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 8px;
}

.platform-page .if-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 9999px;
  border: 1px solid rgba(var(--if-accent-rgb), 0.35);
  background: rgba(var(--if-accent-rgb), 0.06);
  color: var(--neutral-800);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.platform-page .if-chip:hover {
  background: rgba(var(--if-accent-rgb), 0.14);
  transform: translateY(-2px);
  box-shadow: 0 0 18px rgba(var(--if-accent-rgb), 0.25);
}

.platform-page .if-chip .material-symbols-outlined {
  font-size: 18px;
  color: var(--if-accent);
}

/* ============================================================
   Category section (intro + cards split)
   ============================================================ */
.platform-page .if-category {
  scroll-margin-top: 96px;
}

.platform-page .if-category-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 56px;
  align-items: start;
}

/* Alternate the intro side on every other category for visual rhythm. */
.platform-page .if-category:nth-of-type(even) .if-category-intro {
  order: 2;
}

/* ---- Category intro column ---- */
.platform-page .if-category-intro {
  position: sticky;
  top: 96px;
}

.platform-page .if-category-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  margin-bottom: 20px;
  font-size: 28px;
  color: var(--if-accent);
  background: rgba(var(--if-accent-rgb), 0.10);
  border: 1px solid rgba(var(--if-accent-rgb), 0.30);
}

.platform-page .if-category-intro h2 {
  margin-bottom: 16px;
}

/* ============================================================
   Interface cards
   ============================================================ */
.platform-page .if-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.platform-page .if-card {
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.platform-page .if-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(var(--if-accent-rgb), 0.06), transparent 60%);
  pointer-events: none;
}

.platform-page .if-card:hover {
  border-color: rgba(var(--if-accent-rgb), 0.45);
  box-shadow: 0 0 22px rgba(var(--if-accent-rgb), 0.15);
}

.platform-page .if-card > * {
  position: relative;
  z-index: 1;
}

.platform-page .if-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.platform-page .if-monogram {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--if-accent);
  background: rgba(var(--if-accent-rgb), 0.12);
  border: 1px solid rgba(var(--if-accent-rgb), 0.30);
}

.platform-page .if-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--if-accent);
  padding: 4px 10px;
  border-radius: 9999px;
  background: rgba(var(--if-accent-rgb), 0.10);
  border: 1px solid rgba(var(--if-accent-rgb), 0.25);
}

.platform-page .if-card-title {
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 24px;
  font-weight: 600;
  color: var(--neutral-800);
  margin-bottom: 8px;
}

.platform-page .if-card p {
  margin: 0;
}

/* ============================================================
   Closing note
   ============================================================ */
.platform-page .if-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 40px;
  border-radius: 16px;
}

.platform-page .if-note h2 {
  margin-bottom: 8px;
}

.platform-page .if-note p {
  margin: 0;
  max-width: 44rem;
}

.platform-page .if-note .pf-btn {
  flex-shrink: 0;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .platform-page .if-category-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  /* Keep the intro above the cards on narrow screens regardless of order. */
  .platform-page .if-category:nth-of-type(even) .if-category-intro {
    order: 0;
  }

  .platform-page .if-category-intro {
    position: static;
    top: auto;
  }

  .platform-page .if-note {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 600px) {
  .platform-page .if-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }

  .platform-page .if-card {
    padding: 18px;
  }

  .platform-page .if-monogram {
    width: 42px;
    height: 42px;
    font-size: 16px;
  }
}

@media (max-width: 400px) {
  .platform-page .if-grid {
    grid-template-columns: 1fr;
  }
}