/* ============================================================
   VYH2 — ULTRASEP PRODUCT SECTION
   ============================================================ */

#ultrasep {
  background: var(--color-bg-elevated);
  position: relative;
  overflow: hidden;
}

.ultrasep__bg-accent {
  position: absolute;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43,158,212,0.06) 0%, transparent 70%);
  right: -200px;
  top: -200px;
  pointer-events: none;
}

.ultrasep__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: 1;
}

/* ── LEFT ── */
.ultrasep__left {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.ultrasep__product-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  background: linear-gradient(135deg, rgba(43,158,212,0.1), rgba(245,166,35,0.05));
  border: 1px solid rgba(43,158,212,0.2);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-tech-light);
}

.ultrasep__product-badge::before {
  content: '◆';
  color: var(--color-accent);
  font-size: 8px;
}

.ultrasep__title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 3.5vw, var(--text-5xl));
  font-weight: var(--font-extrabold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.ultrasep__title span {
  background: linear-gradient(135deg, var(--color-tech-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.ultrasep__tagline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-base);
  color: var(--color-accent);
  font-weight: var(--font-semibold);
}

.ultrasep__tagline::before {
  content: '';
  display: inline-block;
  width: 16px;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

.ultrasep__description {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* ── ADVANTAGES ── */
.ultrasep__advantages {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.advantage-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--color-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
}

.advantage-item:hover {
  border-color: rgba(43,158,212,0.25);
  background: rgba(43,158,212,0.05);
  transform: translateX(4px);
}

.advantage-item__icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: rgba(43,158,212,0.1);
  border: 1px solid rgba(43,158,212,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-tech-light);
  flex-shrink: 0;
  transition: var(--transition-base);
}

.advantage-item__icon svg { width: 18px; height: 18px; }

.advantage-item:hover .advantage-item__icon {
  background: rgba(43,158,212,0.18);
  box-shadow: 0 0 12px rgba(43,158,212,0.2);
}

.advantage-item__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-medium);
}

/* ── RIGHT — PRODUCT VISUAL ── */
.ultrasep__right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.ultrasep__product-card {
  background: linear-gradient(145deg, rgba(19,32,64,0.95), rgba(10,22,40,0.98));
  border: 1px solid rgba(43,158,212,0.2);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
  width: 100%;
}

.ultrasep__product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-tech), var(--color-accent));
}

.ultrasep__product-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at top right, rgba(43,158,212,0.08) 0%, transparent 60%);
  pointer-events: none;
}

.ultrasep__product-image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
  position: relative;
  z-index: 1;
  background: linear-gradient(135deg, var(--color-bg-elevated), var(--color-bg-surface));
  display: flex;
  align-items: center;
  justify-content: center;
}

.ultrasep__product-img-el {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.ultrasep__product-img-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  color: var(--color-text-muted);
  padding: var(--space-12);
}

.ultrasep__product-img-placeholder svg {
  width: 64px;
  height: 64px;
  color: rgba(43,158,212,0.3);
}

/* ── SPECS ── */
.ultrasep__specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  position: relative;
  z-index: 1;
}

.spec-item {
  text-align: center;
  padding: var(--space-4);
  background: rgba(43,158,212,0.05);
  border: 1px solid rgba(43,158,212,0.1);
  border-radius: var(--radius-lg);
}

.spec-item__value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--font-extrabold);
  color: var(--color-tech-light);
  line-height: 1;
  margin-bottom: 4px;
}

.spec-item__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* ── CTA ── */
.ultrasep__cta {
  display: flex;
  gap: var(--space-3);
}

/* ── CAROUSEL ── */
.usep-carousel {
  width: 100%;
  height: 100%;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.usep-carousel__track-wrap {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.usep-carousel__track {
  display: flex;
  height: 100%;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.usep-carousel__slide {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  position: relative;
}

.usep-carousel__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.usep-carousel__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(6,13,26,0.65);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.usep-carousel__btn:hover {
  background: rgba(43,158,212,0.3);
  border-color: rgba(43,158,212,0.5);
  transform: translateY(-50%) scale(1.1);
}

.usep-carousel__btn svg { pointer-events: none; }

.usep-carousel__btn--prev { left: var(--space-3); }
.usep-carousel__btn--next { right: var(--space-3); }

.usep-carousel__counter {
  position: absolute;
  bottom: var(--space-3);
  right: var(--space-3);
  background: rgba(6,13,26,0.7);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
  padding: 2px var(--space-3);
  z-index: 10;
  line-height: 1.8;
}

.usep-carousel__dots {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) 0 0;
}

.usep-carousel__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid rgba(43,158,212,0.3);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.usep-carousel__dot.active,
.usep-carousel__dot:hover {
  background: var(--color-tech);
  border-color: var(--color-tech);
  transform: scale(1.25);
}

.usep-carousel__placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  width: 100%;
  height: 100%;
  color: var(--color-text-muted);
}

.usep-carousel__placeholder svg {
  color: rgba(43,158,212,0.3);
}

.usep-carousel__placeholder span {
  font-size: var(--text-sm);
  font-family: var(--font-mono);
  letter-spacing: var(--tracking-wide);
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .ultrasep__inner {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
}

@media (max-width: 640px) {
  .ultrasep__specs { grid-template-columns: 1fr 1fr; }
  .ultrasep__cta { flex-direction: column; }
}