/* =====================================================================
   RISS — advertisement placeholders (A1–A4)
   Colours come from the active theme tokens; no hard-coded palette.
   Search markers: AD-A1 … AD-A4 (see ADS-GUIDE.md)
   ===================================================================== */

.ad-section {
  position: relative;
  z-index: 1;
  margin-top: 34px;
}

.ad-section--top { margin-top: 26px; }

.ad {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
}

.ad__label {
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  text-align: center;
  color: var(--quiet);
  opacity: 0.78;
}

/* dummy display banners ------------------------------------------------ */
.ad__unit {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  overflow: hidden;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--line-strong);
  background:
    radial-gradient(130% 160% at 0% 0%, var(--accent-soft), transparent 62%),
    var(--surface-glass);
  color: var(--muted);
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
}

.ad__unit:hover,
.ad__unit:focus-visible {
  border-color: var(--accent-line);
  color: var(--text);
}

.ad__dummy-title {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
  text-align: center;
}

.ad__dummy-sub {
  font-size: 0.7rem;
  line-height: 1.35;
  color: var(--quiet);
  text-align: center;
}

.ad__unit--320x50 {
  width: 320px;
  max-width: 100%;
  height: 50px;
}

.ad__unit--300x250 {
  width: 300px;
  max-width: 100%;
  height: 250px;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
}

.ad__dummy-art {
  width: 100%;
  height: 150px;
  flex: none;
  border-radius: 9px;
  background:
    radial-gradient(120% 120% at 15% 10%, var(--grad-1), transparent 62%),
    radial-gradient(110% 120% at 90% 90%, var(--primary), transparent 60%),
    linear-gradient(140deg, var(--primary-deep), var(--surface));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.ad-section--wide { display: none; margin-top: 44px; }

@media (min-width: 560px) {
  .ad-section--wide { display: block; }
}

.ad__unit--468x60 {
  width: 468px;
  max-width: 100%;
  height: 60px;
  flex-direction: column;
  gap: 1px;
  padding: 0 16px;
}

/* native banner -------------------------------------------------------- */
.ad--native {
  align-items: stretch;
  gap: 8px;
}

.ad__native {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 13px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: var(--card-bg);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 18px 40px -30px rgba(0, 0, 0, 0.9);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.2s, transform 0.2s var(--ease-out);
}

.ad__native:hover,
.ad__native:focus-visible {
  border-color: var(--line-strong);
  transform: translateY(-1px);
}

.ad__native-art {
  position: relative;
  flex: none;
  width: 84px;
  height: 84px;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background:
    radial-gradient(120% 120% at 18% 12%, var(--grad-1), transparent 62%),
    radial-gradient(110% 120% at 88% 92%, var(--grad-3), transparent 58%),
    linear-gradient(140deg, var(--primary-deep), var(--surface));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.ad__native-art::after {
  content: "";
  position: absolute;
  inset: -30% -60% auto;
  height: 120%;
  transform: rotate(24deg);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.ad__native-body {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
  text-align: left;
}

.ad__native-kicker {
  font-size: 0.56rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}

.ad__native-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text);
}

.ad__native-text {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  font-size: 0.75rem;
  line-height: 1.45;
  color: var(--muted);
}

.ad__native-cta {
  margin-top: 2px;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--accent);
}

/* motion preferences --------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .ad__native:hover,
  .ad__native:focus-visible { transform: none; }
}