/**
 * Graydys, Inc. homepage styles
 * Direction: classic ivory field + copper accent, Syne/Outfit typography, layered atmosphere.
 * Avoids flat fills, purple gradients, and broadsheet layouts.
 */

:root {
  --ink: #1a222c;
  --ink-soft: #3d4a5c;
  /* Warm ivory palette — --paper is CSS named ivory (#fffff0) */
  --stone: #f5efe3;
  --stone-deep: #e5dcc8;
  --paper: #fffff0;
  --copper: #b86a3d;
  --copper-deep: #8f4d2a;
  --mist: rgba(255, 255, 255, 0.55);
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "Outfit", system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --header-h: 4.5rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--ink);
  /* Full classic ivory field with soft warm depth (not cool blue-stone) */
  background:
    radial-gradient(120% 80% at 10% -10%, #fff8e8 0%, transparent 55%),
    radial-gradient(90% 70% at 100% 0%, #f3e8d4 0%, transparent 45%),
    linear-gradient(165deg, #fffff0 0%, #f7f1e3 48%, #f0e8d6 100%);
  line-height: 1.55;
  overflow-x: hidden;
}

/* Film grain for tactile depth on the gradient field */
.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  opacity: 0.07;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

/* —— Header —— */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  background: linear-gradient(to bottom, rgba(255, 255, 240, 0.92), transparent);
  backdrop-filter: blur(8px);
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  gap: 1.75rem;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav a {
  opacity: 0.72;
  transition: opacity 0.25s var(--ease);
}

.nav a:hover,
.nav a:focus-visible {
  opacity: 1;
}

/* —— Hero: full-bleed visual plane —— */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: end start;
  padding: calc(var(--header-h) + 2rem) clamp(1.25rem, 5vw, 4rem) 4rem;
  overflow: hidden;
}

.hero__visual {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__mesh {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, transparent 35%, rgba(26, 34, 44, 0.04) 100%),
    repeating-linear-gradient(
      -18deg,
      transparent,
      transparent 48px,
      rgba(26, 34, 44, 0.03) 48px,
      rgba(26, 34, 44, 0.03) 49px
    );
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 42rem;
}

.hero__eyebrow {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* Brand is the hero-level signal — larger than supporting copy; floor allows ~320px wrap */
.hero__brand {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.25rem, 12vw, 7.5rem);
  line-height: 0.92;
  letter-spacing: -0.045em;
}

.hero__lede {
  margin: 1.35rem 0 0;
  max-width: 28rem;
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  font-weight: 300;
  color: var(--ink-soft);
}

.hero__cta {
  margin-top: 2rem;
}

.hero__scroll {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  width: 1px;
  height: 3rem;
  background: rgba(26, 34, 44, 0.15);
  overflow: hidden;
}

.hero__scroll span {
  display: block;
  width: 100%;
  height: 40%;
  background: var(--copper);
  animation: scroll-pulse 2.2s var(--ease) infinite;
}

@keyframes scroll-pulse {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(250%);
  }
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background 0.25s var(--ease),
    color 0.25s var(--ease),
    border-color 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.btn--primary {
  background: var(--ink);
  color: var(--paper);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--copper-deep);
  transform: translateY(-1px);
}

.btn--ghost {
  border-color: rgba(26, 34, 44, 0.25);
  background: transparent;
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--ink);
}

.btn--ghost[aria-disabled="true"] {
  opacity: 0.55;
  pointer-events: none;
}

/* —— Brands section —— */
.brands {
  position: relative;
  z-index: 1;
  padding: clamp(4rem, 10vw, 7rem) clamp(1.25rem, 5vw, 4rem);
}

.section-intro {
  max-width: 28rem;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.section-intro h2 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.section-intro p {
  margin: 0;
  color: var(--ink-soft);
}

.brand-stage {
  display: grid;
  gap: 2rem;
}

@media (min-width: 900px) {
  .brand-stage {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: 3rem;
    align-items: stretch;
  }
}

.brand-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  border-top: 1px solid rgba(26, 34, 44, 0.12);
}

.brand-tab {
  width: 100%;
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 0.75rem;
  align-items: baseline;
  padding: 1.1rem 0;
  border: 0;
  border-bottom: 1px solid rgba(26, 34, 44, 0.12);
  background: transparent;
  font: inherit;
  text-align: left;
  cursor: pointer;
  color: var(--ink-soft);
  transition: color 0.3s var(--ease);
}

.brand-tab:hover,
.brand-tab:focus-visible {
  color: var(--ink);
}

.brand-tab.is-active {
  color: var(--ink);
}

.brand-tab__index {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  opacity: 0.55;
}

.brand-tab__name {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand-tab.is-active .brand-tab__name {
  color: var(--copper-deep);
}

/* Panel is the interactive detail surface for the selected brand */
.brand-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 18rem;
  padding: clamp(1.75rem, 4vw, 2.75rem);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.22)),
    linear-gradient(160deg, var(--stone) 0%, #d8c4b4 100%);
  border: 1px solid rgba(26, 34, 44, 0.08);
  transition: background 0.5s var(--ease);
}

.brand-panel[data-active="gradys"] {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.5), transparent),
    linear-gradient(155deg, #d5e0ea, #b8c5d0);
}

.brand-panel[data-active="aurea"] {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.45), transparent),
    linear-gradient(155deg, #e8d5b8, #c9a66b);
}

.brand-panel[data-active="pets"] {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.5), transparent),
    linear-gradient(155deg, #d5e6d8, #9cb89e);
}

.brand-panel[data-active="rc"] {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.4), transparent),
    linear-gradient(155deg, #d2dde8, #6f8fad);
}

.brand-panel[data-active="beads"] {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.5), transparent),
    linear-gradient(155deg, #ead9e4, #b88aa0);
}

.brand-panel.is-switching .brand-panel__tag,
.brand-panel.is-switching .brand-panel__title,
.brand-panel.is-switching .brand-panel__body,
.brand-panel.is-switching .brand-panel__link {
  animation: panel-in 0.45s var(--ease) both;
}

@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.brand-panel__tag {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.brand-panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.brand-panel__body {
  margin: 1rem 0 0;
  max-width: 28rem;
  color: var(--ink-soft);
}

.brand-panel__link {
  margin-top: 1.75rem;
  align-self: flex-start;
}

/* —— About —— */
.about {
  position: relative;
  z-index: 1;
  padding: 0 clamp(1.25rem, 5vw, 4rem) clamp(5rem, 12vw, 8rem);
}

.about__inner {
  max-width: 36rem;
  padding-top: clamp(3rem, 8vw, 5rem);
  border-top: 1px solid rgba(26, 34, 44, 0.12);
}

.about h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.about p {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--ink-soft);
}

/* —— Footer —— */
.site-footer {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2rem;
  justify-content: space-between;
  padding: 1.75rem clamp(1.25rem, 5vw, 4rem);
  border-top: 1px solid rgba(26, 34, 44, 0.1);
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.site-footer__brand {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--ink);
}

.site-footer__meta {
  margin: 0;
}

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

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

.reveal[data-reveal]:nth-child(2) {
  transition-delay: 0.08s;
}

.reveal[data-reveal]:nth-child(3) {
  transition-delay: 0.16s;
}

.reveal[data-reveal]:nth-child(4) {
  transition-delay: 0.24s;
}

/**
 * Phone layout polish (≤640px):
 * - Tighter hero packing so CTA stays reachable
 * - Smaller header / brand tabs / about type
 * - Drop brand-panel min-height when stacked
 */
@media (max-width: 640px) {
  :root {
    --header-h: 3.75rem;
  }

  .hero {
    padding: calc(var(--header-h) + 1.25rem) clamp(1.15rem, 5vw, 2rem) 3rem;
  }

  .hero__eyebrow {
    margin-bottom: 0.5rem;
  }

  .hero__lede {
    margin-top: 1rem;
  }

  .hero__cta {
    margin-top: 1.5rem;
  }

  .hero__scroll {
    display: none;
  }

  .brand-tab {
    grid-template-columns: 2rem 1fr;
    gap: 0.5rem;
    padding: 0.85rem 0;
  }

  .brand-tab__name {
    font-size: clamp(1.05rem, 4.5vw, 1.25rem);
  }

  .brand-panel {
    min-height: 0;
    padding: 1.35rem 1.25rem;
  }

  .about p {
    font-size: clamp(1rem, 3.5vw, 1.1rem);
  }
}

/**
 * Short viewports: reduce bottom padding and hide scroll cue so hero content
 * is not crowded against the fixed header and CTA.
 */
@media (max-height: 700px) {
  .hero {
    padding-bottom: 2.5rem;
  }

  .hero__scroll {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero__scroll span,
  .reveal,
  .brand-panel.is-switching .brand-panel__tag,
  .brand-panel.is-switching .brand-panel__title,
  .brand-panel.is-switching .brand-panel__body,
  .brand-panel.is-switching .brand-panel__link {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}