/* =============================================================
   DL Posts Filter
   Theme-aware: reads colors & fonts from the active WordPress
   theme via --wp--preset--* tokens (theme.json).
   Falls back to Digitalocus defaults if theme tokens absent.
   ============================================================= */

/* ── Token bridge ─────────────────────────────────────────────
   Maps plugin-internal vars → WP theme preset tokens.
   The var(..., fallback) pattern means:
   • Digitalocus theme   → uses its own palette from theme.json
   • Any other theme     → falls back to the hardcoded defaults
   ──────────────────────────────────────────────────────────── */
:root {
  --dlf-bg:          var(--wp--preset--color--navy,          #0A0F2C);
  --dlf-bg-mid:      var(--wp--preset--color--navy-mid,      #111836);
  --dlf-accent:      var(--wp--preset--color--electric-blue, #2563EB);
  --dlf-accent-lt:   var(--wp--preset--color--blue-light,    #3B82F6);
  --dlf-accent-glow: var(--wp--preset--color--blue-glow,     #60A5FA);
  --dlf-text:        var(--wp--preset--color--white,         #FFFFFF);
  --dlf-text-soft:   var(--wp--preset--color--off-white,     #F0F4FF);
  --dlf-muted:       var(--wp--preset--color--muted,         #8B9DC3);
  --dlf-border:      var(--wp--preset--color--border,        #1E2A4A);

  --dlf-font-display: var(--wp--preset--font-family--display, 'Bebas Neue', sans-serif);
  --dlf-font-body:    var(--wp--preset--font-family--body,    'DM Sans', sans-serif);

  --dlf-ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Wrap ─────────────────────────────────────────────────── */
.dlf-wrap {
  width: 100%;
  font-family: var(--dlf-font-body);
  -webkit-font-smoothing: antialiased;
}

/* ── Filter Bar ──────────────────────────────────────────── */
.dlf-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--dlf-border);
}

.dlf-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: transparent;
  border: 1px solid var(--dlf-border);
  color: var(--dlf-muted);
  font-family: var(--dlf-font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.48rem 1rem;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: color 0.3s var(--dlf-ease), border-color 0.3s var(--dlf-ease);
}
.dlf-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--dlf-accent);
  transform: translateY(101%);
  transition: transform 0.35s var(--dlf-ease);
  z-index: 0;
}
.dlf-btn:hover,
.dlf-btn.active {
  border-color: var(--dlf-accent);
  color: var(--dlf-text);
}
.dlf-btn:hover::before,
.dlf-btn.active::before { transform: translateY(0); }
.dlf-btn__label,
.dlf-btn__count { position: relative; z-index: 1; }
.dlf-btn__count {
  background: rgba(255,255,255,0.15);
  border-radius: 20px;
  padding: 0.1rem 0.42rem;
  font-size: 0.6rem;
  font-weight: 700;
  min-width: 1.3rem;
  text-align: center;
  line-height: 1.5;
}
.dlf-btn:not(.active) .dlf-btn__count {
  background: var(--dlf-border);
  color: var(--dlf-muted);
}

/* ── Grid ─────────────────────────────────────────────────── */
.dlf-grid {
  display: grid;
  gap: 1.75rem;
}
.dlf-grid[data-columns="1"] { grid-template-columns: 1fr; }
.dlf-grid[data-columns="2"] { grid-template-columns: repeat(2, 1fr); }
.dlf-grid[data-columns="3"] { grid-template-columns: repeat(3, 1fr); }
.dlf-grid[data-columns="4"] { grid-template-columns: repeat(4, 1fr); }

/* ── List layout ─────────────────────────────────────────── */
.dlf-layout-list .dlf-grid { grid-template-columns: 1fr !important; gap: 0 !important; }
.dlf-layout-list .dlf-item__inner {
  display: grid !important;
  grid-template-columns: 280px 1fr !important;
  gap: 2rem;
  align-items: center;
  border-bottom: 1px solid var(--dlf-border);
  padding: 1.75rem 0;
}
.dlf-layout-list .dlf-item__visual { aspect-ratio: 16/9; }
.dlf-layout-list .dlf-item__body   { padding: 0; border: none; }

/* ── Item ─────────────────────────────────────────────────── */
.dlf-item {
  will-change: opacity, transform;
}
.dlf-item__inner {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  height: 100%;
}

/* ── Visual ───────────────────────────────────────────────── */
.dlf-item__visual {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--dlf-bg-mid);
  flex-shrink: 0;
}
.dlf-item__img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.7s var(--dlf-ease);
}
.dlf-item__inner:hover .dlf-item__img { transform: scale(1.06); }

/* Placeholder */
.dlf-item__placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--dlf-bg-mid), var(--dlf-bg));
}
.dlf-item__placeholder svg { width: 60px; opacity: 0.4; }
.dlf-item__placeholder svg path { fill: color-mix(in srgb, var(--dlf-accent) 25%, transparent); }
.dlf-item__placeholder svg circle { fill: color-mix(in srgb, var(--dlf-accent) 20%, transparent); }

/* Category badge */
.dlf-item__cat-badge {
  position: absolute;
  top: 0.9rem; left: 0.9rem;
  font-family: var(--dlf-font-body);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dlf-text);
  background: var(--dlf-accent);
  padding: 0.22rem 0.6rem;
  z-index: 2;
}

/* Overlay */
.dlf-item__overlay {
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--dlf-bg) 65%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  backdrop-filter: blur(3px);
  transition: opacity 0.35s var(--dlf-ease);
}
.dlf-item__inner:hover .dlf-item__overlay { opacity: 1; }
.dlf-item__arrow {
  font-size: 1.5rem;
  color: var(--dlf-text);
  transform: translateY(8px);
  display: block;
  transition: transform 0.4s var(--dlf-ease);
}
.dlf-item__inner:hover .dlf-item__arrow { transform: translateY(0); }

/* ── Body ─────────────────────────────────────────────────── */
.dlf-item__body {
  padding: 1.2rem 0 1.5rem;
  border-bottom: 1px solid var(--dlf-border);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}
.dlf-item__meta-top {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.dlf-item__date,
.dlf-item__author,
.dlf-item__read-time {
  font-size: 0.68rem;
  color: var(--dlf-muted);
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.dlf-item__date::after,
.dlf-item__author::after { content: '·'; margin-left: 0.75rem; }

.dlf-item__title {
  font-family: var(--dlf-font-display);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--dlf-text);
  line-height: 1.15;
  margin: 0;
  transition: color 0.3s;
}
.dlf-item__inner:hover .dlf-item__title { color: var(--dlf-accent-glow); }

.dlf-item__excerpt {
  font-size: 0.82rem;
  color: var(--dlf-muted);
  line-height: 1.65;
  margin: 0;
  flex: 1;
}
.dlf-item__footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: auto;
  padding-top: 0.5rem;
}
.dlf-item__tag {
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dlf-accent-lt);
  border: 1px solid color-mix(in srgb, var(--dlf-accent) 30%, transparent);
  padding: 0.18rem 0.5rem;
  transition: border-color 0.3s, background 0.3s;
}
.dlf-item__inner:hover .dlf-item__tag {
  border-color: var(--dlf-accent);
  background: color-mix(in srgb, var(--dlf-accent) 8%, transparent);
}

/* ── Empty / no results ──────────────────────────────────── */
.dlf-no-results {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--dlf-muted);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  border: 1px dashed var(--dlf-border);
  grid-column: 1 / -1;
}
.dlf-empty {
  color: var(--dlf-muted);
  text-align: center;
  padding: 3rem;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .dlf-grid[data-columns="4"] { grid-template-columns: repeat(3, 1fr); }
  .dlf-layout-list .dlf-item__inner { grid-template-columns: 220px 1fr !important; }
}
@media (max-width: 768px) {
  .dlf-grid[data-columns="3"],
  .dlf-grid[data-columns="4"] { grid-template-columns: repeat(2, 1fr); }
  .dlf-layout-list .dlf-item__inner { grid-template-columns: 1fr !important; }
}
@media (max-width: 480px) {
  .dlf-grid[data-columns="2"],
  .dlf-grid[data-columns="3"],
  .dlf-grid[data-columns="4"] { grid-template-columns: 1fr; }
  .dlf-filters { gap: 0.35rem; }
}