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

:root {
  --bg-color: #000000;
  --font-main: 'DM Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --text-white: #ffffff;
  --border-subtle: rgba(255, 255, 255, 0.15);
  --border-hover: rgba(255, 255, 255, 0.4);
}

html {
  background-color: var(--bg-color);
  color: var(--text-white);
  font-family: var(--font-main);
  width: 100%;
  min-height: 100%;
  overflow-x: hidden;
  overflow-y: scroll;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: #27272a var(--bg-color);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-color);
  color: var(--text-white);
  width: 100%;
  min-height: 100%;
  overflow-x: hidden;
  position: relative;
}

/* Accessibility helper */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
  background: #27272a;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #3f3f46;
}

/* 1. FIXED BACKGROUND CANVAS LAYER */
.canvas-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
  background-color: #000000;
}

canvas#animation-canvas {
  display: block;
  width: 100%;
  height: 100%;
  transform: translateZ(0);
  backface-visibility: hidden;
}

.ambient-gradient-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 50% 50%, rgba(0, 0, 0, 0.15) 0%, rgba(0, 0, 0, 0.6) 100%),
              linear-gradient(180deg, rgba(0, 0, 0, 0.7) 0%, transparent 18%, transparent 80%, rgba(0, 0, 0, 0.85) 100%);
}

/* 2. ARCHITECTURAL GUIDELINES */
.guide-lines-overlay {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 2;
  pointer-events: none;
  overflow: hidden;
}

.guide-svg {
  width: 100%;
  height: 100%;
}

/* 3. FIXED HEADER */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 40;
  pointer-events: none;
  padding: 2rem 2.5rem;
  transition: background-color 0.3s ease, backdrop-filter 0.3s ease, padding 0.3s ease;
}

.site-header.scrolled {
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 1.25rem 2.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  max-width: 1440px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: auto;
}

.horse-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: #fff;
  transition: transform 0.25s ease;
}

.horse-link:hover {
  transform: scale(1.08);
}

.horse-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.5));
}

.header-logo {
  font-family: var(--font-main);
  letter-spacing: 0.65em;
  font-size: 0.85rem;
  font-weight: 400;
  text-transform: uppercase;
  color: #ffffff;
  user-select: none;
  transform: translateX(0.32em); /* optical balance for wide tracking */
}

.header-menu-btn-wrap {
  display: flex;
  justify-content: flex-end;
}

.menu-open-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  outline: none;
}

.menu-open-btn .bar {
  display: block;
  height: 1.5px;
  background-color: #ffffff;
  transition: transform 0.25s ease, width 0.25s ease;
}

.menu-open-btn .bar-top {
  width: 24px;
}

.menu-open-btn .bar-bottom {
  width: 24px;
}

.menu-open-btn:hover .bar-top {
  transform: scaleX(1.15);
}

.menu-open-btn:hover .bar-bottom {
  transform: scaleX(0.85);
}

/* 4. FIXED SIDE SOCIAL ICONS */
.side-social {
  position: fixed;
  left: 2rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 30;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.social-link {
  color: #ffffff;
  opacity: 0.75;
  transition: opacity 0.25s ease, transform 0.25s ease;
  padding: 0.35rem;
  display: inline-flex;
}

.social-link:hover {
  opacity: 1;
  transform: scale(1.15);
}

/* 5. SLIDE-OUT MENU DRAWER */
.menu-drawer {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
}

.menu-drawer.open {
  display: flex;
  justify-content: flex-end;
}

.menu-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  animation: fadeIn 0.25s ease forwards;
}

.menu-panel {
  position: relative;
  width: 100%;
  max-width: 440px;
  height: 100%;
  background: #000000;
  border-left: 1px solid rgba(255, 255, 255, 0.18);
  padding: 3rem 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  animation: slideInRight 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  z-index: 2;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInRight {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

.menu-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.menu-subhead {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: #ffffff;
  font-weight: 500;
}

.menu-close-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: #ffffff;
  padding: 0.5rem;
  transition: opacity 0.2s ease, transform 0.2s ease;
  display: flex;
  align-items: center;
}

.menu-close-btn:hover {
  opacity: 0.7;
  transform: rotate(90deg);
}

.menu-nav {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin: auto 0;
}

.menu-nav-link {
  font-size: 1.4rem;
  font-weight: 300;
  color: #ffffff;
  text-decoration: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: transform 0.25s ease, color 0.25s ease;
  padding: 0.5rem 0;
}

.menu-nav-link:hover {
  transform: translateX(8px);
  color: #ffffff;
}

.menu-link-tag {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 0.25s ease;
  font-weight: 500;
}

.menu-nav-link:hover .menu-link-tag {
  opacity: 1;
}

.menu-quote {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.85rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
  font-weight: 300;
}

.menu-panel-footer {
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.8);
}

/* 6. MAIN SCROLL CONTAINER & SECTIONS */
.main-scroll-track {
  position: relative;
  z-index: 10;
  width: 100%;
}

.scroll-section {
  position: relative;
  width: 100%;
}

/* HERO SECTION */
.hero-section {
  min-height: 135vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 6rem 2rem 0;
}

.hero-content {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform 0.1s linear, opacity 0.1s linear;
}

.hero-kicker-wrap {
  margin-bottom: 0.25rem;
}

.hero-kicker {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: #ffffff;
  opacity: 0.9;
  user-select: none;
}

.hero-title-wrap {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  user-select: none;
  pointer-events: none;
}

.hero-title {
  font-family: var(--font-main);
  font-size: clamp(4.5rem, 14vw, 11.5rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.03em;
  text-transform: lowercase;
  margin: 0;
  background: linear-gradient(180deg, #ffffff 12%, rgba(255, 255, 255, 0.65) 55%, rgba(255, 255, 255, 0.16) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.5));
}

.hero-desc-wrap {
  max-width: 480px;
  width: 100%;
  text-align: left;
  margin-top: 1rem;
  margin-left: 2rem;
  align-self: flex-start;
}

.hero-desc {
  font-size: clamp(0.85rem, 1.2vw, 0.95rem);
  font-weight: 400;
  line-height: 1.7;
  color: #ffffff;
}

.desc-line.block {
  display: block;
}

.mt-1 {
  margin-top: 0.35rem;
}

/* SHOWCASE SECTION (MID-FOLD) */
.showcase-section {
  min-height: 110vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  pointer-events: none;
  padding: 0 2rem;
}

.showcase-content {
  max-width: 700px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.showcase-content.active {
  opacity: 1;
  transform: translateY(0);
}

.showcase-kicker {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.8);
  display: block;
  margin-bottom: 0.75rem;
}

.showcase-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: #ffffff;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.showcase-desc {
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  max-width: 540px;
  margin: 0 auto;
}

/* SECOND FOLD SECTION */
.second-fold-section {
  min-height: 150vh;
  padding: 8rem 2rem 8rem;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.85) 15%, rgba(0, 0, 0, 0.95) 100%);
}

.second-fold-inner {
  max-width: 1360px;
  margin: 0 auto;
  width: 100%;
}

.section-kicker-wrap {
  text-align: center;
  margin-bottom: 1rem;
}

.section-kicker {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.9);
}

.section-headline-wrap {
  text-align: center;
  max-width: 1000px;
  margin: 0 auto 1.5rem;
}

.section-headline {
  font-size: clamp(2.2rem, 5.5vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: #ffffff;
  line-height: 1.1;
}

.section-subtitle-wrap {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 5rem;
}

.section-subtitle {
  font-size: clamp(0.9rem, 1.2vw, 1.05rem);
  font-weight: 300;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.95);
}

/* CARDS GRID */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 9rem;
}

.feature-card {
  background: rgba(10, 10, 12, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  padding: 2rem 1.8rem;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.35s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-hover);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.7);
}

.card-title {
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 0.85rem;
  color: #ffffff;
  line-height: 1.3;
}

.card-desc {
  font-size: 0.82rem;
  font-weight: 300;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
}

.card-bottom {
  display: flex;
  justify-content: flex-end;
  align-items: flex-end;
  padding-top: 1.5rem;
}

.card-num {
  font-family: var(--font-main);
  font-size: 2rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.9);
  transition: opacity 0.3s ease;
}

.feature-card:hover .card-num {
  color: #ffffff;
}

/* CONCLUDING STATEMENT */
.concluding-statement {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 5rem;
  text-align: center;
  user-select: none;
}

.concluding-kicker {
  font-size: 0.75rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
  display: block;
  margin-bottom: 1rem;
}

.concluding-title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: #ffffff;
  margin-bottom: 1.5rem;
}

.concluding-brand {
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  font-weight: 400;
  letter-spacing: 0.7em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2.5rem;
  transform: translateX(0.35em); /* balance letter spacing */
}

.concluding-horse-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}

.concluding-horse {
  cursor: pointer;
  transition: transform 0.35s ease;
}

.concluding-horse:hover {
  transform: scale(1.12);
}

/* REVEAL ANIMATIONS ON SCROLL */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(35px);
  filter: blur(3px);
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.85s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.85s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0px);
}

/* RESPONSIVE DESIGN */
@media (max-width: 1200px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 1.5rem 1.25rem;
  }
  .side-social {
    display: none;
  }
  .hero-desc-wrap {
    margin-left: 0;
    text-align: center;
  }
  .cards-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  .hero-section {
    min-height: 110vh;
  }
  .second-fold-section {
    padding: 4rem 1.25rem 5rem;
  }
}