/* ==========================================================================
   SecureVision Technologies — Shared Components
   Buttons, navbar, mobile menu, cart drawer, footer, cards, forms, marquee.
   ========================================================================== */

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: var(--primary);
  --btn-fg: var(--white);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: 0.95em 1.9em;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border-radius: var(--radius-pill);
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  transition: color var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
  will-change: transform;
}
.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--ink);
  transform: translateY(101%);
  transition: transform var(--dur) var(--ease-out);
}
.btn:hover::after { transform: translateY(0); }
.btn:active { transform: scale(0.97); }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  border: 1px solid var(--line);
}
.btn--ghost::after { background: var(--ink); }
.btn--ghost:hover { --btn-fg: var(--white); }

.btn--light {
  --btn-bg: var(--paper);
  --btn-fg: var(--ink);
}
.btn--light::after { background: var(--primary); }
.btn--light:hover { --btn-fg: var(--white); }

.btn--on-dark {
  --btn-bg: transparent;
  --btn-fg: var(--ink-on-dark);
  border: 1px solid var(--line-on-dark);
}
.btn--on-dark::after { background: var(--amber); }
.btn--on-dark:hover { --btn-fg: var(--ink); }

.btn svg { width: 1em; height: 1em; }

/* text link with animated underline */
.link-underline {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.8125rem;
}
.link-underline::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur) var(--ease-out);
}
.link-underline:hover::after { transform: scaleX(1); transform-origin: left; }

/* ---------- Navbar ---------- */
.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-nav);
  color: var(--ink-on-dark);
  transition: background var(--dur) var(--ease-out), color var(--dur) var(--ease-out), border-color var(--dur), transform var(--dur-slow) var(--ease-out);
  border-bottom: 1px solid transparent;
}
/* Transparent state sits over the dark hero → light text + on-dark ghost button */
.site-nav .brand__name small { color: var(--ink-on-dark-soft); transition: color var(--dur) var(--ease-out); }
.site-nav .btn--ghost { --btn-fg: var(--ink-on-dark); border-color: var(--line-on-dark); }
.site-nav .btn--ghost::after { background: var(--amber); }
.site-nav .btn--ghost:hover { --btn-fg: var(--ink); }
.site-nav.is-scrolled {
  background: color-mix(in srgb, var(--mist) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--line);
  color: var(--ink);
}
/* Scrolled state sits on cream → dark text + light ghost button */
.site-nav.is-scrolled .brand__name small { color: var(--ink-soft); }
.site-nav.is-scrolled .btn--ghost { --btn-fg: var(--ink); border-color: var(--line); }
.site-nav.is-scrolled .btn--ghost::after { background: var(--ink); }
.site-nav.is-hidden { transform: translateY(-100%); }
.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  height: 84px;
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.site-nav__links {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 0.3rem + 1.6vw, 2.4rem);
}
.nav-link {
  position: relative;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding-block: 0.4rem;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur) var(--ease-out);
}
.nav-link:hover::after,
.nav-link[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
.nav-link[aria-current="page"] { color: var(--primary); }

.site-nav__actions { display: flex; align-items: center; gap: var(--space-4); }

.icon-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  transition: background var(--dur) var(--ease-out);
}
.icon-btn:hover { background: var(--haze); }
.icon-btn svg { width: 22px; height: 22px; stroke: currentColor; }
.cart-count {
  position: absolute;
  top: 4px; right: 4px;
  min-width: 18px; height: 18px;
  padding: 0 4px;
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 18px;
  text-align: center;
  color: var(--white);
  background: var(--primary);
  border-radius: var(--radius-pill);
}

/* ---------- Brand / logo ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
}
.brand__mark { width: 40px; height: 40px; color: var(--primary); }
.brand__name {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1;
  white-space: nowrap;
}
.brand__name small {
  display: block;
  font-family: var(--font-body);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 3px;
}

/* burger */
.burger { display: none; width: 44px; height: 44px; flex-direction: column; gap: 5px; align-items: center; justify-content: center; }
.burger span { display: block; width: 24px; height: 2px; background: currentColor; transition: transform var(--dur) var(--ease-out), opacity var(--dur); }
.burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Mobile menu ---------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-drawer);
  background: var(--bg-dark);
  color: var(--ink-on-dark);
  padding: 120px var(--gutter) var(--space-7);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transform: translateY(-100%);
  transition: transform var(--dur-slow) var(--ease-in-out);
  visibility: hidden;
}
.mobile-menu.is-open { transform: translateY(0); visibility: visible; }
.mobile-menu__links { display: flex; flex-direction: column; gap: var(--space-4); }
.mobile-menu__links a {
  font-family: var(--font-display);
  font-size: clamp(2rem, 8vw, 3rem);
  line-height: 1.1;
  opacity: 0;
  transform: translateY(20px);
}
.mobile-menu.is-open .mobile-menu__links a {
  animation: menu-in var(--dur-slow) var(--ease-out) forwards;
}
.mobile-menu__links a:nth-child(1) { animation-delay: 0.08s; }
.mobile-menu__links a:nth-child(2) { animation-delay: 0.14s; }
.mobile-menu__links a:nth-child(3) { animation-delay: 0.20s; }
.mobile-menu__links a:nth-child(4) { animation-delay: 0.26s; }
.mobile-menu__links a:nth-child(5) { animation-delay: 0.32s; }
.mobile-menu__links a:nth-child(6) { animation-delay: 0.38s; }
@keyframes menu-in { to { opacity: 1; transform: translateY(0); } }
.mobile-menu__foot { display: flex; flex-direction: column; gap: var(--space-4); color: var(--ink-on-dark-soft); font-size: 0.9rem; }

/* ---------- Cart drawer ---------- */
.overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: rgba(7, 18, 33, 0.55);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur) var(--ease-out), visibility var(--dur);
}
.overlay.is-open { opacity: 1; visibility: visible; }

.cart {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  z-index: var(--z-drawer);
  width: min(420px, 92vw);
  background: var(--paper);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--dur-slow) var(--ease-in-out);
  box-shadow: var(--shadow-lg);
}
.cart.is-open { transform: translateX(0); }
.cart__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--line);
}
.cart__head h5 { font-size: 1.1rem; }
.cart__body { flex: 1; overflow-y: auto; padding: var(--space-6); }
.cart__empty { color: var(--ink-soft); text-align: center; padding-block: var(--space-8); }
.cart-item { display: flex; gap: var(--space-4); padding-block: var(--space-4); border-bottom: 1px solid var(--line); }
.cart-item img { width: 72px; height: 72px; object-fit: cover; border-radius: var(--radius-sm); }
.cart-item__meta { flex: 1; }
.cart-item__meta h6 { font-family: var(--font-body); font-weight: 700; }
.cart-item__price { color: var(--primary); font-weight: 700; }
.cart-item__remove { font-size: 0.8rem; color: var(--ink-soft); text-decoration: underline; margin-top: var(--space-1); }
.cart-item__qty { display: inline-flex; align-items: center; gap: var(--space-3); margin-top: var(--space-2); }
.cart-item__qty button {
  width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 1rem; font-weight: 700; line-height: 1;
  color: var(--ink);
  transition: background var(--dur), color var(--dur), border-color var(--dur);
}
.cart-item__qty button:hover { background: var(--primary); color: var(--white); border-color: var(--primary); }
.cart-item__qty span { min-width: 1.5ch; text-align: center; font-weight: 700; }
.cart__foot { padding: var(--space-6); border-top: 1px solid var(--line); }
.cart__subtotal { display: flex; justify-content: space-between; font-weight: 700; margin-bottom: var(--space-4); }
.cart__note { font-size: 0.78rem; color: var(--ink-soft); margin-bottom: var(--space-4); }
.cart__foot .btn { width: 100%; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-dark-deep);
  color: var(--ink-on-dark);
  padding-block: var(--space-9) var(--space-6);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr) 1.2fr;
  gap: var(--space-7);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--line-on-dark);
}
.footer-col h6 {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--amber-light);
  margin-bottom: var(--space-4);
}
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-col a { color: var(--ink-on-dark-soft); transition: color var(--dur); }
.footer-col a:hover { color: var(--ink-on-dark); }
.footer-brand p { color: var(--ink-on-dark-soft); margin: var(--space-4) 0 var(--space-5); max-width: 34ch; }
.footer-social { display: flex; gap: var(--space-3); }
.footer-social a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%;
  border: 1px solid var(--line-on-dark);
  transition: background var(--dur), color var(--dur), border-color var(--dur);
}
.footer-social a:hover { background: var(--amber); color: var(--graphite); border-color: var(--amber); }
.footer-social svg { width: 18px; height: 18px; }
.footer-contact li { color: var(--ink-on-dark-soft); margin-bottom: var(--space-3); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-6);
  font-size: 0.85rem;
  color: var(--ink-on-dark-soft);
}
.footer-credit a {
  color: var(--ink-on-dark);
  font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}
.footer-credit a:hover,
.footer-credit a:focus-visible { color: var(--amber); border-bottom-color: currentColor; }

/* ---------- Marquee ---------- */
.marquee {
  overflow: hidden;
  white-space: nowrap;
  border-block: 1px solid var(--line);
  padding-block: var(--space-5);
}
.marquee.is-dark { border-color: var(--line-on-dark); }
.marquee__track {
  display: inline-flex;
  gap: var(--space-7);
  will-change: transform;
}
.marquee__track span {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 0.9rem + 2.6vw, 3rem);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: var(--space-7);
}
.marquee__track span::after {
  content: "";
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--primary);
  display: inline-block;
}
.marquee.is-dark .marquee__track span { color: var(--ink-on-dark); }

/* ---------- Reveal animation base (JS-driven) ---------- */
[data-reveal] { opacity: 0; }
[data-reveal-line] { display: inline-block; overflow: hidden; }
.no-js [data-reveal] { opacity: 1; }

/* ---------- Page loader ---------- */
.loader {
  position: fixed;
  inset: 0;
  z-index: var(--z-loader);
  background: var(--bg-dark-deep);
  color: var(--ink-on-dark);
  display: grid;
  place-items: center;
  transition: opacity 0.5s var(--ease-out), visibility 0.5s;
}
.loader.is-done { opacity: 0; visibility: hidden; }
.loader__inner { text-align: center; }
.loader__word { font-family: var(--font-display); font-size: clamp(1.6rem, 5vw, 3rem); font-weight: 700; letter-spacing: var(--tracking-tight); overflow: hidden; }
.loader__bar { width: 180px; height: 2px; margin: var(--space-4) auto 0; background: var(--line-on-dark); overflow: hidden; }
.loader__bar span { display: block; height: 100%; width: 0; background: var(--amber); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .site-nav__links, .site-nav__actions .btn { display: none; }
  .burger { display: flex; }
}
@media (max-width: 560px) {
  .footer-top { grid-template-columns: 1fr; gap: var(--space-6); }
}
@media (max-width: 480px) {
  /* Keep the longer "SecureVision Technologies" wordmark tidy on small screens */
  .brand__mark { width: 34px; height: 34px; }
  .brand__name { font-size: 1.1rem; }
  .brand__name small { letter-spacing: 0.26em; }
}