/* css/premium.css — Shared Premium Interaction Design System */

/* ── Design Tokens ── */
:root {
  --premium-ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --premium-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --premium-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --premium-duration-fast: 120ms;
  --premium-duration: 220ms;
  --premium-duration-med: 350ms;
  --premium-duration-slow: 600ms;
}

/* ── Scroll Progress ── */
.premium-scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  z-index: 9999;
  pointer-events: none;
  overflow: hidden;
}

.premium-scroll-progress__bar {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--accent-1, #2feecc), var(--accent-purple, #8B5CF6));
  transform: scaleX(0);
  transform-origin: left;
  will-change: transform;
  transition: transform 100ms linear;
}

/* ── Scroll Reveal System ── */
[data-reveal] {
  opacity: 0;
  will-change: transform, opacity;
  transition: opacity var(--premium-duration-slow) var(--premium-ease-out),
              transform var(--premium-duration-slow) var(--premium-ease-out);
}

[data-reveal="up"]    { transform: translateY(40px); }
[data-reveal="down"]  { transform: translateY(-40px); }
[data-reveal="left"]  { transform: translateX(40px); }
[data-reveal="right"] { transform: translateX(-40px); }
[data-reveal="scale"] { transform: scale(0.92); }
[data-reveal="blur"]  { transform: none; filter: blur(12px); }
[data-reveal="fade"]  { transform: none; }

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
  filter: none;
}

/* ── Footer Premium ── */
.footer-premium {
  position: relative;
  border-top: 1px solid rgba(47, 238, 204, 0.1);
  background: linear-gradient(180deg, transparent 0%, rgba(3, 31, 26, 0.5) 100%);
}

.footer-premium__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

@media (max-width: 768px) {
  .footer-premium__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .footer-premium__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

.footer-premium__brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-premium__heading {
  font-family: 'Outfit', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-1, #2feecc);
  margin-bottom: 8px;
}

.footer-premium__link {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--premium-duration) ease;
  line-height: 2;
}

.footer-premium__link:hover {
  color: var(--accent-1, #2feecc);
}

.footer-premium__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  margin-top: 48px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.3);
}

@media (max-width: 640px) {
  .footer-premium__bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    filter: none;
    transition: none;
  }
}