/* LG Roofing Materials — shared design system */

@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --obsidian: #0F0F10;
  --charcoal: #2F3033;
  --clean-white: #FFFFFF;
  --soft-white: #F5F3EE;
  --gold: #C8923A;
  --gold-bright: #DBA44C;
  --gold-dim: #8a6526;

  --shadow-sm: 0 2px 8px -2px rgba(15, 15, 16, 0.45), 0 1px 2px rgba(200, 146, 58, 0.06);
  --shadow-md: 0 12px 28px -8px rgba(15, 15, 16, 0.55), 0 4px 10px -4px rgba(200, 146, 58, 0.10);
  --shadow-lg: 0 28px 60px -16px rgba(15, 15, 16, 0.65), 0 8px 20px -6px rgba(200, 146, 58, 0.14);
  --shadow-gold: 0 10px 30px -8px rgba(200, 146, 58, 0.35), 0 2px 8px -2px rgba(0,0,0,0.4);
  --shadow-hover-glow: 0 20px 45px -14px rgba(15, 15, 16, 0.6), 0 0 0 1px rgba(200, 146, 58, 0.12), 0 8px 28px -6px rgba(200, 146, 58, 0.45);

  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background-color: var(--obsidian);
  color: var(--soft-white);
  font-family: 'Inter', sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.font-display {
  font-family: 'Bebas Neue', sans-serif;
  letter-spacing: 0.01em;
}

h1.font-display, h2.font-display, h3.font-display {
  letter-spacing: -0.01em;
}

/* Grain texture overlay */
.grain {
  position: relative;
  isolation: isolate;
}
.grain::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0.05;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Layered radial glow background */
.bg-glow {
  background-color: var(--obsidian);
  background-image:
    radial-gradient(ellipse 70% 50% at 20% -10%, rgba(200, 146, 58, 0.16), transparent 60%),
    radial-gradient(ellipse 60% 40% at 100% 10%, rgba(200, 146, 58, 0.08), transparent 60%),
    radial-gradient(ellipse 80% 60% at 50% 120%, rgba(47, 48, 51, 0.6), transparent 70%);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  padding: 0.9rem 1.75rem;
  border-radius: 0.5rem;
  transition: transform 0.35s var(--ease-spring), box-shadow 0.35s var(--ease-out), background-color 0.25s var(--ease-out), border-color 0.25s var(--ease-out), color 0.25s var(--ease-out);
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(135deg, var(--gold-bright), var(--gold));
  color: var(--obsidian);
  box-shadow: var(--shadow-gold);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px -10px rgba(200, 146, 58, 0.5), 0 4px 10px -2px rgba(0,0,0,0.45);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 3px;
}

.btn-secondary {
  background: transparent;
  color: var(--soft-white);
  border: 1.5px solid rgba(245, 243, 238, 0.35);
}
.btn-secondary:hover {
  border-color: var(--gold-bright);
  color: var(--gold-bright);
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-hover-glow);
}
.btn-secondary:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 3px;
}

.btn-ghost {
  color: var(--gold-bright);
  font-weight: 600;
  padding: 0.5rem 0;
  border-bottom: 1.5px solid transparent;
}
.btn-ghost:hover { border-color: var(--gold-bright); }

/* Surfaces */
.surface-base { background-color: var(--obsidian); }
.surface-elevated {
  background-color: var(--charcoal);
  border: 1px solid rgba(245, 243, 238, 0.08);
}
.surface-floating {
  background-color: #1a1a1c;
  border: 1px solid rgba(200, 146, 58, 0.18);
  box-shadow: var(--shadow-lg);
  transition: transform 0.4s var(--ease-spring), box-shadow 0.4s var(--ease-out), border-color 0.3s var(--ease-out);
}
.surface-floating:hover {
  transform: translateY(-5px) scale(1.012);
  border-color: rgba(200, 146, 58, 0.45);
  box-shadow: var(--shadow-lg), var(--shadow-hover-glow);
}

/* Universal hover-elevate-glow for any standalone bordered box/pill/badge */
.hover-box {
  transition: transform 0.35s var(--ease-spring), box-shadow 0.35s var(--ease-out), border-color 0.3s var(--ease-out);
}
.hover-box:hover {
  transform: translateY(-4px) scale(1.025);
  border-color: rgba(200, 146, 58, 0.45) !important;
  box-shadow: var(--shadow-hover-glow);
}

/* Header */
#site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(15, 15, 16, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(245, 243, 238, 0.08);
  transition: box-shadow 0.3s var(--ease-out), transform 0.35s var(--ease-out);
}
#site-header.scrolled { box-shadow: 0 8px 24px -12px rgba(0,0,0,0.6); }
@media (max-width: 767px) {
  #site-header.header-hidden { transform: translateY(-100%); }
}

.nav-link {
  position: relative;
  color: var(--soft-white);
  font-weight: 500;
  font-size: 0.95rem;
  opacity: 0.85;
  transition: opacity 0.25s var(--ease-out), color 0.25s var(--ease-out);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  height: 2px;
  width: 0;
  background: var(--gold-bright);
  transition: width 0.3s var(--ease-out);
}
.nav-link:hover { opacity: 1; color: var(--gold-bright); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { opacity: 1; color: var(--gold-bright); }
.nav-link.active::after { width: 100%; }

/* Brand window cards */
.brand-card {
  position: relative;
  display: block;
  border-radius: 1rem;
  overflow: hidden;
  background: var(--charcoal);
  border: 1px solid rgba(245, 243, 238, 0.08);
  box-shadow: var(--shadow-sm);
  transition: transform 0.45s var(--ease-spring), box-shadow 0.45s var(--ease-out), border-color 0.35s var(--ease-out);
}
.brand-card:hover, .brand-card:focus-visible {
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--shadow-lg), var(--shadow-hover-glow);
  border-color: rgba(200, 146, 58, 0.45);
}
.brand-card:focus-visible { outline: 2px solid var(--gold-bright); outline-offset: 2px; }

.brand-card .brand-card__logo-wrap {
  aspect-ratio: 2 / 1.15;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.brand-card .brand-card__logo-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}
.brand-card:hover .brand-card__logo-wrap img { transform: scale(1.06); }

.brand-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.25rem;
  background: var(--charcoal);
  border-top: 1px solid rgba(245, 243, 238, 0.08);
}

.brand-card__arrow {
  display: inline-flex;
  transition: transform 0.35s var(--ease-spring);
}
.brand-card:hover .brand-card__arrow { transform: translateX(4px); }

/* Color swatches */
.swatch {
  border-radius: 0.65rem;
  overflow: hidden;
  border: 1px solid rgba(245, 243, 238, 0.1);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease-spring), box-shadow 0.35s var(--ease-out), border-color 0.3s var(--ease-out);
}
.swatch:hover {
  transform: translateY(-4px) scale(1.02);
  border-color: rgba(200, 146, 58, 0.4);
  box-shadow: var(--shadow-md), var(--shadow-hover-glow);
}
.swatch__chip { height: 6rem; }

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* Form fields */
.field-input {
  width: 100%;
  background: rgba(245, 243, 238, 0.04);
  border: 1px solid rgba(245, 243, 238, 0.15);
  border-radius: 0.5rem;
  padding: 0.85rem 1rem;
  color: var(--soft-white);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  transition: border-color 0.25s var(--ease-out), background-color 0.25s var(--ease-out);
}
.field-input::placeholder { color: rgba(245, 243, 238, 0.35); }
.field-input:focus {
  outline: none;
  border-color: var(--gold-bright);
  background: rgba(245, 243, 238, 0.07);
}
.field-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: rgba(245, 243, 238, 0.55);
  margin-bottom: 0.4rem;
}

/* Star rating */
.stars { color: var(--gold-bright); letter-spacing: 0.1em; }

/* Mobile menu */
#mobile-menu { transition: max-height 0.4s var(--ease-out), opacity 0.3s var(--ease-out); }

/* Brand logo marquee */
.marquee {
  position: relative;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
  mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
}
.marquee__track {
  display: flex;
  align-items: center;
  width: max-content;
  will-change: transform;
}
.marquee__logo {
  flex: 0 0 auto;
  width: 10.5rem;
  height: 5.25rem;
  margin-right: 2.5rem;
  border-radius: 0.65rem;
  overflow: hidden;
  border: 1px solid rgba(245, 243, 238, 0.08);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease-spring), border-color 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
}
.marquee__logo:hover {
  transform: translateY(-5px) scale(1.06);
  border-color: rgba(200, 146, 58, 0.5);
  box-shadow: var(--shadow-hover-glow);
  z-index: 1;
}
.marquee__logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Sticky mobile call bar */
#mobile-call-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 60;
}

@media (min-width: 768px) {
  #mobile-call-bar { display: none; }
}