/* ==========================================================================
   LiteGR · base.css  ·  v2 Apple-style
   Reset, typography, navigation, buttons, footer, reveal animations.
   ========================================================================== */

@import url("./tokens.css");

/* ---- Reset --------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  background: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden;
  min-height: 100dvh;
}
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

/* ---- Focus visible ------------------------------------------------ */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---- Skip link ---------------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 24px;
  z-index: var(--z-toast);
  padding: 10px 18px;
  background: var(--color-text);
  color: var(--color-text-inverse);
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: var(--weight-medium);
}
.skip-link:focus-visible { top: 12px; }

/* ---- Container ---------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* ---- Reveal animations ------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--reveal-duration) var(--reveal-easing),
              transform var(--reveal-duration) var(--reveal-easing);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ---- Section primitives ------------------------------------------ */
section { padding: var(--section-py) 0; }

@media (max-width: 768px) {
  section { padding: var(--section-py-sm) 0; }
}

.section-eyebrow {
  font-size: 13px;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  margin-bottom: 12px;
}

.section-headline {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: var(--weight-bold);
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: 16px;
}

.section-headline em {
  font-style: normal;
  color: var(--color-text-secondary);
}

.section-sub {
  font-size: 18px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 540px;
}

.text-center { text-align: center; }
.text-center .section-sub,
.text-center .section-headline { margin-left: auto; margin-right: auto; }

/* ---- Navigation --------------------------------------------------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-nav);
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background var(--transition), backdrop-filter var(--transition), border-color var(--transition);
}
.nav.scrolled {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
}
.nav__inner {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav__logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 17px;
  font-weight: var(--weight-semibold);
  letter-spacing: -0.02em;
  color: var(--color-text);
}
.nav__logo-mark {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}
.nav__logo-text { display: inline-flex; }
.nav__logo-text span:first-child { font-weight: var(--weight-regular); }
.nav__logo-text span:last-child { font-weight: var(--weight-semibold); }

.nav__links {
  display: flex;
  gap: 32px;
  align-items: center;
}
.nav__links a {
  font-size: 14px;
  font-weight: var(--weight-regular);
  color: var(--color-text-secondary);
  transition: color var(--transition);
}
.nav__links a:hover { color: var(--color-text); }
.nav__links a.is-active { color: var(--color-text); font-weight: var(--weight-medium); }

/* ---- Mobile nav drawer -------------------------------------------- */
@media (max-width: 767px) {
  .nav__links {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: min(300px, 85vw);
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: calc(var(--nav-h) + 24px) 32px 48px;
    transform: translateX(110%);
    visibility: hidden;
    transition: transform var(--transition-slow), visibility 0s var(--transition-slow);
    z-index: var(--z-nav);
    box-shadow: -24px 0 64px rgba(0, 0, 0, 0.15);
    overflow-y: auto;
  }
  .nav.is-menu-open .nav__links {
    transform: translateX(0);
    visibility: visible;
    transition: transform var(--transition-slow), visibility 0s 0s;
  }
  .nav__links a {
    font-size: 20px;
    font-weight: var(--weight-semibold);
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
    width: 100%;
    color: var(--color-text);
  }
  .nav__links a:last-child { border-bottom: none; }
  .nav__links a.is-active { color: var(--color-accent); }
}

/* ---- Hamburger button --------------------------------------------- */
.nav__actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__hamburger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--touch-target);
  height: var(--touch-target);
  border-radius: var(--radius-pill);
  color: var(--color-text);
  transition: background var(--transition);
}
.nav__hamburger:hover { background: rgba(58, 58, 58, 0.06); }
.nav__hamburger svg { width: 22px; height: 22px; }

@media (min-width: 768px) {
  .nav__hamburger { display: none; }
}

/* ---- Mobile backdrop (injected by nav.js) ------------------------- */
.nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: calc(var(--z-nav) - 1);
  opacity: 0;
  transition: opacity var(--transition-slow);
  pointer-events: none;
}
.nav-backdrop.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.nav__cart {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--touch-target);
  height: var(--touch-target);
  border-radius: var(--radius-pill);
  color: var(--color-text);
  transition: background var(--transition);
}
.nav__cart:hover { background: rgba(58, 58, 58, 0.06); }
.nav__cart svg { width: 22px; height: 22px; }

.nav__cart-badge {
  position: absolute;
  top: 4px; right: 4px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: var(--weight-semibold);
  line-height: 18px;
  text-align: center;
}

/* ---- Buttons (Apple pill) ---------------------------------------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 17px;
  font-weight: var(--weight-medium);
  color: #fff;
  background: var(--color-text);
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  border: none;
  min-height: var(--touch-target);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn-primary:hover {
  background: #2D2D2F;
  transform: scale(1.02);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  color: #fff;
}
.btn-primary:active { transform: scale(0.99); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 17px;
  font-weight: var(--weight-medium);
  color: var(--color-accent);
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  border: 1.5px solid rgba(31, 78, 92, 0.25);
  min-height: var(--touch-target);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}
.btn-secondary:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-tint);
  transform: scale(1.02);
  color: var(--color-accent);
}
.btn-secondary:active { transform: scale(0.99); }

.btn-buy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 17px;
  font-weight: var(--weight-semibold);
  color: var(--color-buy-text);
  background: var(--color-buy-bg);
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-buy-border);
  min-height: var(--touch-target);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn-buy:hover {
  background: var(--color-buy-bg-hover);
  transform: scale(1.02);
  box-shadow: var(--shadow-md);
  color: var(--color-buy-text);
}
.btn-buy:active { transform: scale(0.99); }

.btn-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 17px;
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  background: #fff;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  min-height: var(--touch-target);
  transition: transform var(--transition), box-shadow var(--transition);
}
.btn-white:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 32px rgba(255, 255, 255, 0.15);
  color: var(--color-text);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 17px;
  font-weight: var(--weight-medium);
  color: rgba(255, 255, 255, 0.75);
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  border: 1.5px solid rgba(255, 255, 255, 0.18);
  min-height: var(--touch-target);
  transition: border-color var(--transition), color var(--transition), transform var(--transition);
}
.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
  transform: scale(1.02);
}

.btn-icon { width: 18px; height: 18px; flex-shrink: 0; }

/* ---- Link arrow (Apple-style) ----------------------------------- */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 17px;
  font-weight: var(--weight-medium);
  color: var(--color-accent);
  transition: gap var(--transition), color var(--transition);
}
.link-arrow::after {
  content: "›";
  font-size: 22px;
  line-height: 1;
  transition: transform var(--transition);
}
.link-arrow:hover {
  color: var(--color-accent-hover);
  gap: 10px;
}
.link-arrow:hover::after { transform: translateX(2px); }

/* ---- Footer (dark, Apple-style) --------------------------------- */
.footer {
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-border-dark);
  padding: 56px 0 32px;
  margin-top: 0;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
@media (min-width: 768px) {
  .footer__inner { grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 48px; }
}
.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}
.footer__brand-mark {
  width: 28px;
  height: 28px;
  color: rgba(255, 255, 255, 0.85);
}
.footer__brand-name {
  font-size: 17px;
  font-weight: var(--weight-semibold);
  color: #fff;
  letter-spacing: -0.02em;
}
.footer__brand-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.65;
  max-width: 280px;
}
.footer__col-title {
  font-size: 12px;
  font-weight: var(--weight-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 16px;
}
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
}
.footer__links a:hover { color: #fff; }

.footer__bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border-dark);
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}
@media (min-width: 768px) {
  .footer__bottom { flex-direction: row; justify-content: space-between; align-items: center; }
}