/* =============================================
   LYS STUDIO — Design System
   Reference: lovebilly.com editorial aesthetic
   Tokens from design-tokens.json
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Source+Code+Pro:wght@300;400;500&family=Source+Sans+3:wght@300;400;500;600&display=swap');

:root {
  /* Colors — from design-tokens.json */
  --color-primary: #321E1E;
  --color-accent: #1990C6;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F5F5F5;
  --color-text: #321E1E;
  --color-text-muted: #666666;
  --color-text-on-dark: #FFFFFF;
  --color-border: #E5E5E5;
  --color-overlay: rgba(0, 0, 0, 0.4);
  --color-btn-primary-bg: transparent;
  --color-btn-primary-text: #FFFFFF;
  --color-btn-primary-border: #FFFFFF;
  --color-btn-secondary-bg: #000000;
  --color-btn-secondary-text: #FFFFFF;
  --color-sold-out-bg: #321E1E;
  --color-sold-out-text: #FFFFFF;

  /* Typography — from design-tokens.json */
  --font-heading: 'Source Code Pro', monospace;
  --font-body: 'Source Sans 3', sans-serif;
  --heading-weight: 400;
  --heading-transform: lowercase;
  --heading-letter-spacing: 0.01em;
  --heading-line-height: 1;
  --body-weight: 400;
  --body-size: 0.8125rem;
  --body-letter-spacing: 0.035em;
  --body-line-height: 1.5;
  --btn-transform: lowercase;
  --btn-letter-spacing: 0.03em;
  --btn-size: 0.75rem;

  /* Spacing — from design-tokens.json */
  --container-max-width: 100%;
  --container-gutter: 1.25rem;
  --section-vertical: clamp(3rem, 6vw, 5rem);
  --section-stack-gap: 1.5rem;

  /* Borders — from design-tokens.json */
  --border-radius: 0px;
  --border-width: 1px;

  /* Transitions — from design-tokens.json */
  --transition-default: 0.2s ease-in-out;
  --transition-fast: 0.15s ease;

  /* Layout */
  --header-height: 60px;
  --icon-stroke: 1px;
}

/* =============================================
   RESET & BASE
   ============================================= */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-weight: var(--body-weight);
  font-size: var(--body-size);
  letter-spacing: var(--body-letter-spacing);
  line-height: var(--body-line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* =============================================
   TYPOGRAPHY
   ============================================= */

h1, h2, h3, h4, h5, h6,
.heading {
  font-family: var(--font-heading);
  font-weight: var(--heading-weight);
  text-transform: var(--heading-transform);
  letter-spacing: var(--heading-letter-spacing);
  line-height: var(--heading-line-height);
}

h1 { font-size: clamp(2.25rem, 1.8rem + 2.5vw, 4.5rem); }
h2 { font-size: clamp(1.75rem, 1.4rem + 2vw, 3.5rem); }
h3 { font-size: clamp(1.25rem, 1.1rem + 1vw, 2rem); }
h4 { font-size: clamp(1rem, 0.95rem + 0.5vw, 1.5rem); }

.subheading {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: 0.6875rem;
  text-transform: lowercase;
  letter-spacing: 0em;
}

p {
  text-wrap: pretty;
  max-width: 60ch;
}

/* =============================================
   HEADER
   ============================================= */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  transition: transform var(--transition-default),
              background-color var(--transition-default),
              border-color var(--transition-default);
}

.header--hidden {
  transform: translateY(-100%);
}

.header--transparent {
  background-color: transparent;
  border-color: transparent;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 var(--container-gutter);
  max-width: 1440px;
  margin: 0 auto;
}

.header__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.header__logo img {
  height: 32px;
  width: auto;
  object-fit: contain;
  transition: opacity var(--transition-default);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.header__nav a {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 400;
  text-transform: lowercase;
  letter-spacing: 0.01em;
  color: var(--color-text);
  position: relative;
  padding-bottom: 2px;
  transition: color var(--transition-default);
}

.header__nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-text);
  transition: width var(--transition-default);
}

.header__nav a:hover::after,
.header__nav a.active::after {
  width: 100%;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header__actions a,
.header__actions button {
  color: var(--color-text);
  transition: opacity var(--transition-default);
}

.header__actions a:hover,
.header__actions button:hover {
  opacity: 0.6;
}

/* Mobile toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.mobile-toggle span {
  display: block;
  width: 20px;
  height: 1px;
  background-color: var(--color-text);
  transition: transform var(--transition-default);
}

/* =============================================
   HERO
   ============================================= */

.hero {
  position: relative;
  width: 100%;
  height: 80vh;
  min-height: 500px;
  max-height: 900px;
  overflow: hidden;
  margin-top: var(--header-height);
}

.hero__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.05) 0%,
    rgba(0, 0, 0, 0.25) 100%
  );
}

.hero__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: clamp(2rem, 5vw, 4rem) var(--container-gutter);
  color: var(--color-text-on-dark);
}

.hero__content h1 {
  text-wrap: balance;
  margin-bottom: 1.5rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: var(--btn-size);
  font-weight: 400;
  text-transform: var(--btn-transform);
  letter-spacing: var(--btn-letter-spacing);
  border-radius: var(--border-radius);
  padding: 0.75rem 2rem;
  transition: all var(--transition-default);
  cursor: pointer;
  text-decoration: none;
}

.btn--outline {
  background: transparent;
  color: var(--color-text-on-dark);
  border: 1px solid var(--color-text-on-dark);
}

.btn--outline:hover {
  background: var(--color-text-on-dark);
  color: var(--color-text);
}

.btn--solid {
  background: var(--color-text);
  color: var(--color-text-on-dark);
  border: 1px solid var(--color-text);
}

.btn--solid:hover {
  background: transparent;
  color: var(--color-text);
}

.btn--dark-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-text);
}

.btn--dark-outline:hover {
  background: var(--color-text);
  color: var(--color-text-on-dark);
}

.btn__arrow {
  margin-left: 0.5rem;
  transition: transform var(--transition-default);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* =============================================
   SECTIONS
   ============================================= */

.section {
  padding: var(--section-vertical) var(--container-gutter);
}

.section--flush {
  padding: 0;
}

.section__inner {
  max-width: 1440px;
  margin: 0 auto;
}

/* =============================================
   BRAND STORY (who is billy? → considered bedding)
   ============================================= */

.brand-story {
  padding: var(--section-vertical) var(--container-gutter);
}

.brand-story__inner {
  max-width: 600px;
}

.brand-story h2 {
  margin-bottom: 1.5rem;
}

.brand-story p {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  line-height: 1.6;
}

/* =============================================
   SPLIT GRID (50/50 collection layout)
   ============================================= */

.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
}

.split-grid__item {
  position: relative;
  aspect-ratio: 1 / 1.1;
  overflow: hidden;
}

.split-grid__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  transition: transform 0.6s ease-out;
}

.split-grid__item:hover .split-grid__image {
  transform: scale(1.03);
}

.split-grid__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
  color: var(--color-text-on-dark);
}

.split-grid__overlay h3 {
  margin-bottom: 0.75rem;
}

.split-grid__overlay .subheading {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 1.5rem;
}

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

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 2px;
}

.product-card {
  position: relative;
  background: var(--color-bg);
}

.product-card__image-wrap {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.product-card__image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 1rem;
  transition: transform 0.4s ease-out;
}

.product-card:hover .product-card__image {
  transform: scale(1.05);
}

.product-card__badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  font-family: var(--font-heading);
  font-size: 0.625rem;
  text-transform: lowercase;
  letter-spacing: 0.02em;
  padding: 0.25rem 0.5rem;
  background: var(--color-sold-out-bg);
  color: var(--color-sold-out-text);
}

.product-card__info {
  padding: 1rem 0.5rem;
}

.product-card__name {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 400;
  text-transform: lowercase;
  letter-spacing: 0.01em;
  margin-bottom: 0.375rem;
}

.product-card__price {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

/* =============================================
   FEATURE BANNER (full-width image + text)
   ============================================= */

.feature-banner {
  position: relative;
  width: 100%;
  min-height: 500px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-banner__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

.feature-banner__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
}

.feature-banner__content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-text-on-dark);
  padding: 2rem;
  max-width: 600px;
}

.feature-banner__content h2 {
  margin-bottom: 1rem;
}

.feature-banner__content p {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.85);
  margin: 0 auto 2rem;
}

/* =============================================
   HIGHLIGHTS
   ============================================= */

.highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding: var(--section-vertical) var(--container-gutter);
  max-width: 1200px;
  margin: 0 auto;
}

.highlight {
  text-align: center;
  padding: 1rem;
}

.highlight__icon {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  opacity: 0.6;
}

.highlight h4 {
  font-size: 0.8125rem;
  margin-bottom: 0.75rem;
}

.highlight p {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0 auto;
}

/* =============================================
   NEWSLETTER
   ============================================= */

.newsletter {
  padding: var(--section-vertical) var(--container-gutter);
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.newsletter h2 {
  font-size: clamp(1rem, 0.9rem + 0.8vw, 1.5rem);
  margin-bottom: 2rem;
}

.newsletter__form {
  display: flex;
  max-width: 520px;
  margin: 0 auto 1rem;
  gap: 0;
}

.newsletter__input {
  flex: 1;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-right: none;
  border-radius: var(--border-radius);
  outline: none;
  color: var(--color-text);
  transition: border-color var(--transition-default);
}

.newsletter__input:focus {
  border-color: var(--color-text);
}

.newsletter__input::placeholder {
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

.newsletter__submit {
  font-family: var(--font-body);
  font-size: var(--btn-size);
  font-weight: 400;
  text-transform: lowercase;
  letter-spacing: var(--btn-letter-spacing);
  padding: 0.75rem 2rem;
  background: var(--color-text);
  color: var(--color-text-on-dark);
  border: 1px solid var(--color-text);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-default);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.newsletter__submit:hover {
  background: transparent;
  color: var(--color-text);
}

.newsletter__disclaimer {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  text-align: center;
}

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

.footer {
  border-top: 1px solid var(--color-border);
  padding: clamp(2.5rem, 5vw, 4rem) var(--container-gutter);
}

.footer__inner {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
}

.footer__logo img {
  height: 36px;
  width: auto;
  object-fit: contain;
  margin-bottom: 0.5rem;
}

.footer__tagline {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.footer__col h5 {
  font-size: 0.6875rem;
  margin-bottom: 1.25rem;
}

.footer__col ul li {
  margin-bottom: 0.75rem;
}

.footer__col ul li a {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  transition: color var(--transition-default);
}

.footer__col ul li a:hover {
  color: var(--color-text);
}

.footer__bottom {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  margin-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.footer__copyright {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
}

.footer__social {
  display: flex;
  gap: 1rem;
}

.footer__social a {
  color: var(--color-text);
  transition: opacity var(--transition-default);
}

.footer__social a:hover {
  opacity: 0.6;
}

/* =============================================
   SCROLL REVEAL ANIMATIONS
   ============================================= */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.stagger-grid > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.stagger-grid.is-visible > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: translateY(0); }
.stagger-grid.is-visible > *:nth-child(2) { transition-delay: 80ms; opacity: 1; transform: translateY(0); }
.stagger-grid.is-visible > *:nth-child(3) { transition-delay: 160ms; opacity: 1; transform: translateY(0); }
.stagger-grid.is-visible > *:nth-child(4) { transition-delay: 240ms; opacity: 1; transform: translateY(0); }
.stagger-grid.is-visible > *:nth-child(5) { transition-delay: 320ms; opacity: 1; transform: translateY(0); }
.stagger-grid.is-visible > *:nth-child(n+6) { transition-delay: 320ms; opacity: 1; transform: translateY(0); }

/* =============================================
   MOBILE BREAKPOINTS
   ============================================= */

@media (max-width: 1024px) {
  .header__logo img {
    height: 28px;
  }

  .header__nav {
    display: none;
  }

  .header__nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 1.5rem var(--container-gutter);
    gap: 1.25rem;
    z-index: 99;
  }

  .header__nav.open a {
    color: var(--color-text);
    font-size: 0.875rem;
  }

  .mobile-toggle {
    display: flex;
  }

  .split-grid {
    grid-template-columns: 1fr;
  }

  .split-grid__item {
    aspect-ratio: 16 / 10;
  }

  .highlights {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .hero {
    height: 60vh;
    min-height: 400px;
  }
}

@media (max-width: 640px) {
  :root {
    --container-gutter: 1rem;
    --section-vertical: 2.5rem;
  }

  h1 { font-size: clamp(1.5rem, 1.2rem + 2vw, 2.5rem); }
  h2 { font-size: clamp(1.25rem, 1.1rem + 1vw, 2rem); }

  .hero {
    height: 50vh;
    min-height: 320px;
  }

  .hero__content {
    padding: 1.5rem var(--container-gutter);
  }

  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .newsletter__form {
    flex-direction: column;
    gap: 0.5rem;
  }

  .newsletter__input {
    border-right: 1px solid var(--color-border);
  }

  .newsletter__submit {
    justify-content: center;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .footer__bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .feature-banner {
    min-height: 350px;
  }
}

/* =============================================
   PAYMENT ICONS (footer)
   ============================================= */

.payment-methods {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.payment-methods span {
  font-size: 0.5625rem;
  color: var(--color-text-muted);
  padding: 0.25rem 0.375rem;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  font-family: var(--font-body);
  letter-spacing: 0.02em;
}