/* R5 Academy — Components */

/* ============================================================
   RESPONSIVE GRID UTILITIES
   ============================================================ */

.r-grid {
  display: grid;
  gap: var(--sp-4);
}
.r-grid-2 { grid-template-columns: repeat(2, 1fr); }
.r-grid-3 { grid-template-columns: repeat(3, 1fr); }
.r-grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .r-grid-3, .r-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .r-grid-2, .r-grid-3, .r-grid-4 { grid-template-columns: 1fr; }
}

/* ============================================================
   FLEX UTILITIES
   ============================================================ */

.r-flex {
  display: flex;
  gap: var(--sp-3);
  flex-wrap: wrap;
}
.r-flex-center { justify-content: center; }
.r-flex-between { justify-content: space-between; align-items: center; }
.r-flex-end { justify-content: flex-end; align-items: center; }


/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  --btn-bg: var(--carbon-2);
  --btn-fg: var(--platinum);
  --btn-bd: var(--titanium-border);

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-sm);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 14px 26px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--r-sm);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--dur-fast) var(--ease-out-strong);
  text-decoration: none;
  white-space: nowrap;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,0.18) 50%, transparent 70%);
  transform: translateX(-110%);
  transition: transform 700ms var(--ease-out-strong);
  pointer-events: none;
}
.btn:hover::after { transform: translateX(110%); }

.btn:hover {
  transform: translateY(-1px);
  border-color: var(--chrome);
}

.btn-primary {
  --btn-bg: var(--grad-cyber);
  --btn-fg: var(--white-cold);
  --btn-bd: rgba(0,124,255,0.6);
  background: var(--grad-cyber);
  box-shadow: var(--sh-cyber);
}
.btn-primary:hover {
  box-shadow: var(--sh-cyber-strong);
  transform: translateY(-2px);
}

.btn-chrome {
  background: var(--grad-chrome);
  color: var(--carbon-0);
  border-color: var(--chrome);
  font-weight: 700;
}

.btn-ghost {
  background: transparent;
  border-color: var(--titanium-border);
}
.btn-ghost:hover { border-color: var(--cyber); color: var(--cyber-bright); }

.btn-cyber {
  background: transparent;
  border: 1px solid var(--cyber);
  color: var(--cyber-bright);
}
.btn-cyber:hover {
  background: var(--cyber-soft);
  box-shadow: 0 0 24px var(--cyber-glow);
}

.btn-lg {
  padding: 18px 32px;
  font-size: var(--fs-base);
}

.btn-xl {
  padding: 22px 40px;
  font-size: var(--fs-md);
}

.btn-arrow::after {
  /* override sweep on arrow buttons */
}
.btn .arrow {
  display: inline-block;
  transition: transform var(--dur-fast) var(--ease-out-strong);
}
.btn:hover .arrow { transform: translateX(4px); }

/* ============================================================
   NAVBAR
   ============================================================ */

.r5-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  background: rgba(10, 11, 15, 0.72);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: all var(--dur-fast) var(--ease-out-strong);
}
.r5-nav.is-scrolled {
  background: rgba(7, 8, 11, 0.92);
  border-bottom-color: var(--titanium-border);
}
.r5-nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
}
.r5-nav__brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
}
.r5-nav__brand img { height: 38px; width: auto; }
.r5-nav__brand-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyber-bright);
  padding: 3px 8px;
  border: 1px solid var(--cyber-deep);
  border-radius: var(--r-xs);
  background: var(--cyber-soft);
}
.r5-nav__menu {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}
.r5-nav__link {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--chrome-bright);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out-strong);
  position: relative;
  padding: 6px 0;
}
.r5-nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--cyber);
  transition: width var(--dur-fast) var(--ease-out-strong);
}
.r5-nav__link:hover { color: var(--white-cold); }
.r5-nav__link:hover::after { width: 100%; }
.r5-nav__link.is-active { color: var(--cyber-bright); }
.r5-nav__link.is-active::after { width: 100%; }

.r5-nav__cta { display: flex; gap: var(--sp-3); align-items: center; }

.r5-nav__burger {
  display: none;
  background: transparent;
  border: 1px solid var(--titanium-border);
  width: 44px; height: 44px;
  border-radius: var(--r-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.r5-nav__burger span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--platinum);
  position: relative;
}
.r5-nav__burger span::before,
.r5-nav__burger span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--platinum);
}
.r5-nav__burger span::before { top: -6px; }
.r5-nav__burger span::after { top: 6px; }

@media (max-width: 960px) {
  .r5-nav__menu, .r5-nav__cta { display: none; }
  .r5-nav__burger { display: inline-flex; }

  .r5-nav.is-open .r5-nav__menu,
  .r5-nav.is-open .r5-nav__cta {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--carbon-0);
    border-bottom: 1px solid var(--titanium-border);
    padding: var(--sp-5);
    gap: var(--sp-4);
    align-items: stretch;
  }
  .r5-nav.is-open .r5-nav__cta { top: auto; border-top: 1px solid var(--titanium-border); border-bottom: 1px solid var(--titanium-border); }
}

/* ============================================================
   PROMO BAR (above navbar)
   ============================================================ */

.r5-promo {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 101;
  background: linear-gradient(90deg, var(--cyber-deep) 0%, var(--cyber) 50%, var(--cyber-deep) 100%);
  color: var(--white-cold);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 8px var(--sp-4);
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}
.r5-promo strong { color: var(--white-cold); font-weight: 700; }
.r5-promo .blink {
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--cyber-electric);
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
  animation: pulse 1.4s infinite var(--ease-out-strong);
}

.has-promo .r5-nav { top: 36px; }
.has-promo main { padding-top: calc(var(--nav-h) + 36px); }
body:not(.has-promo) main { padding-top: var(--nav-h); }

@keyframes pulse {
  0%, 100% { opacity: 0.4; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.2); box-shadow: 0 0 8px var(--cyber-electric); }
}

/* ============================================================
   CARDS
   ============================================================ */

.card {
  background: var(--grad-panel);
  border: 1px solid var(--titanium-border);
  border-radius: var(--r-md);
  padding: var(--sp-6);
  position: relative;
  overflow: hidden;
  transition: all var(--dur-mid) var(--ease-out-strong);
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--grad-edge);
  pointer-events: none;
}
.card:hover {
  border-color: rgba(0,124,255,0.3);
  transform: translateY(-3px);
  box-shadow: var(--sh-elevated);
}

.card-cyber {
  border-color: rgba(0,124,255,0.35);
  background: linear-gradient(180deg, rgba(0,124,255,0.06) 0%, var(--carbon-2) 70%);
}
.card-cyber::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 0%, rgba(0,124,255,0.18) 0%, transparent 50%);
  pointer-events: none;
}

/* Product card — corner cut, technical feel */
.product-card {
  background: var(--grad-panel);
  border: 1px solid var(--titanium-border);
  padding: var(--sp-6);
  position: relative;
  transition: all var(--dur-mid) var(--ease-out-strong);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  min-height: 100%;
  clip-path: var(--clip-cyber);
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyber) 50%, transparent);
  opacity: 0;
  transition: opacity var(--dur-mid) var(--ease-out-strong);
}
.product-card:hover::before { opacity: 1; }
.product-card:hover {
  border-color: var(--cyber-deep);
  transform: translateY(-4px);
}

.product-card__code {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--chrome);
}
.product-card__title {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--white-cold);
  letter-spacing: -0.01em;
}
.product-card__desc {
  color: var(--chrome-bright);
  font-size: var(--fs-sm);
  line-height: 1.6;
  flex: 1;
}
.product-card__price {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--titanium-border);
}
.product-card__price .val {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  color: var(--white-cold);
  font-weight: 700;
}
.product-card__price .unit {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--chrome);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* ============================================================
   FOOTER
   ============================================================ */

.r5-footer {
  margin-top: var(--sp-9);
  border-top: 1px solid var(--titanium-border);
  background: linear-gradient(180deg, var(--carbon-1) 0%, var(--carbon-0) 100%);
  padding: var(--sp-8) 0 var(--sp-5);
  position: relative;
}
.r5-footer::before {
  content: '';
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 10%, var(--cyber) 50%, transparent 90%);
  opacity: 0.6;
}
.r5-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--sp-7);
  padding-bottom: var(--sp-7);
  border-bottom: 1px solid var(--titanium-border);
}
@media (max-width: 780px) {
  .r5-footer__grid { grid-template-columns: 1fr 1fr; gap: var(--sp-5); }
}
@media (max-width: 480px) {
  .r5-footer__grid { grid-template-columns: 1fr; }
}
.r5-footer__brand img { height: 56px; margin-bottom: var(--sp-4); }
.r5-footer__tagline {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyber-bright);
  margin-bottom: var(--sp-4);
}
.r5-footer__desc { font-size: var(--fs-sm); color: var(--chrome); max-width: 320px; }
.r5-footer__col h5 {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyber-bright);
  font-weight: 600;
  margin-bottom: var(--sp-4);
}
.r5-footer__col ul { display: flex; flex-direction: column; gap: var(--sp-3); }
.r5-footer__col a {
  color: var(--chrome-bright);
  font-size: var(--fs-sm);
  text-decoration: none;
  transition: color var(--dur-fast);
}
.r5-footer__col a:hover { color: var(--white-cold); }

.r5-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--sp-5);
  flex-wrap: wrap;
  gap: var(--sp-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--chrome-dim);
  letter-spacing: 0.06em;
}
.r5-footer__bottom .sep { color: var(--titanium-border); margin: 0 var(--sp-2); }