/* ============================
   Z BIKES — Editorial Landing
   ============================ */

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --black: #0a0a0a;
  --black-light: #111111;
  --grey-dark: #1a1a1a;
  --grey: #2a2a2a;
  --grey-mid: #3a3a3a;
  --grey-light: #666666;
  --white: #f0ede8;
  --white-dim: #b0ada8;
  --gold: #c9a84c;
  --gold-light: #dfc06a;
  --gold-dark: #a8892e;
  --red: #6b1a1a;
  --red-accent: #8b2a2a;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, sans-serif;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--black);
  color: var(--white);
  overflow-x: hidden;
  line-height: 1.6;
}

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

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gold {
  color: var(--gold);
}

/* --- Preloader --- */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}

.preloader.done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader-inner {
  text-align: center;
}

.preloader-letter {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 900;
  color: var(--gold);
  display: block;
  animation: pulse 1.2s ease-in-out infinite;
}

.preloader-bar {
  width: 120px;
  height: 2px;
  background: var(--grey);
  margin-top: 1.5rem;
  border-radius: 2px;
  overflow: hidden;
}

.preloader-fill {
  height: 100%;
  background: var(--gold);
  animation: load 1.5s var(--ease-out) forwards;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@keyframes load {
  from { width: 0; }
  to { width: 100%; }
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 3rem;
  transition: background 0.4s, padding 0.4s, backdrop-filter 0.4s;
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px);
  padding: 1rem 3rem;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white-dim);
  transition: color 0.3s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.3s var(--ease-out);
}

.nav-links a:hover {
  color: var(--white);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--gold) !important;
  color: var(--black) !important;
  padding: 0.6rem 1.4rem;
  border-radius: 0;
  font-weight: 600 !important;
  letter-spacing: 0.05em !important;
  transition: background 0.3s, transform 0.3s !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--gold-light) !important;
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle.active span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle.active span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(10, 10, 10, 0.97);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s, visibility 0.4s;
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}

.mobile-link {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  transition: color 0.3s;
}

.mobile-link:hover {
  color: var(--gold);
}

/* --- Hero --- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: flex-end;
  padding: 3rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-grain {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  z-index: 1;
  pointer-events: none;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(201, 168, 76, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 20% 80%, rgba(107, 26, 26, 0.08) 0%, transparent 50%),
    linear-gradient(180deg, var(--black) 0%, var(--black-light) 40%, var(--grey-dark) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding-bottom: 3rem;
}

.hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 8rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 2rem;
}

.hero-line {
  display: block;
}

.hero-sub {
  font-size: 1.1rem;
  font-weight: 300;
  line-height: 1.7;
  color: var(--white-dim);
  max-width: 520px;
  margin-bottom: 2.5rem;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--gold);
  padding: 1rem 2rem;
  transition: background 0.3s, transform 0.3s, gap 0.3s;
}

.hero-btn:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  gap: 1rem;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 3rem;
  right: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  z-index: 2;
}

.hero-scroll-hint span {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--grey-light);
  writing-mode: vertical-rl;
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: var(--grey-mid);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gold);
  animation: scrollDown 2s var(--ease-in-out) infinite;
}

@keyframes scrollDown {
  0% { top: -100%; }
  100% { top: 100%; }
}

.hero-badge {
  position: absolute;
  top: 50%;
  right: 3rem;
  transform: translateY(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 1.5rem 1rem;
  border: 1px solid var(--grey-mid);
}

.hero-badge span {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--grey-light);
}

.hero-badge strong {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--gold);
}

/* --- Marquee --- */
.marquee {
  padding: 1.5rem 0;
  border-top: 1px solid var(--grey);
  border-bottom: 1px solid var(--grey);
  overflow: hidden;
}

.marquee-track {
  display: flex;
  white-space: nowrap;
  animation: marquee 30s linear infinite;
}

.marquee-track span {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--grey-light);
  padding-right: 2rem;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* --- Horizontal Scroll Section --- */
.horizontal-section {
  position: relative;
  padding: 6rem 0 0;
}

.horizontal-header {
  padding: 0 3rem 3rem;
}

.section-eyebrow {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.horizontal-wrapper {
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  cursor: grab;
}

.horizontal-wrapper::-webkit-scrollbar {
  display: none;
}

.horizontal-wrapper:active {
  cursor: grabbing;
}

.horizontal-track {
  display: flex;
  gap: 2rem;
  padding: 0 3rem 4rem;
  width: max-content;
}

.bike-card {
  width: 420px;
  flex-shrink: 0;
  background: var(--grey-dark);
  overflow: hidden;
  position: relative;
  transition: transform 0.5s var(--ease-out);
}

.bike-card:hover {
  transform: translateY(-8px);
}

.bike-card-img {
  position: relative;
  height: 320px;
  overflow: hidden;
}

.bike-card-img img {
  transition: transform 0.6s var(--ease-out);
}

.bike-card:hover .bike-card-img img {
  transform: scale(1.05);
}

.bike-card-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.bike-card-icon svg {
  width: 160px;
  height: auto;
  color: var(--gold);
}

.bike-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10, 10, 10, 0.8) 100%);
}

.bike-card-info {
  padding: 2rem;
  position: relative;
}

.bike-card-number {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 900;
  color: var(--grey);
  position: absolute;
  top: -2rem;
  right: 2rem;
  line-height: 1;
}

.bike-card-info h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.bike-card-info p {
  font-size: 0.9rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--white-dim);
  margin-bottom: 1.5rem;
}

.bike-card-meta {
  display: flex;
  gap: 1rem;
}

.bike-card-meta span {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--gold-dark);
}

.horizontal-progress {
  width: 200px;
  height: 2px;
  background: var(--grey);
  margin: 0 auto 4rem;
  border-radius: 2px;
  overflow: hidden;
}

.horizontal-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--gold);
  transition: width 0.1s linear;
}

/* --- Story --- */
.story {
  padding: 8rem 3rem;
  border-top: 1px solid var(--grey);
}

.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  max-width: 1200px;
  margin: 0 auto;
}

.story-left {
  position: sticky;
  top: 8rem;
  align-self: start;
}

.story-text p {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.8;
  color: var(--white-dim);
  margin-bottom: 1.5rem;
}

.story-lead {
  font-size: 1.2rem !important;
  font-weight: 400 !important;
  color: var(--white) !important;
}

.story-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
  padding-top: 3rem;
  border-top: 1px solid var(--grey);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
  display: block;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey-light);
  margin-top: 0.5rem;
  display: block;
}

/* --- Process --- */
.process {
  padding: 8rem 3rem;
  border-top: 1px solid var(--grey);
}

.process-header {
  max-width: 1200px;
  margin: 0 auto 4rem;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.process-step {
  padding: 2.5rem 2rem;
  border: 1px solid var(--grey);
  transition: border-color 0.4s, background 0.4s;
  position: relative;
}

.process-step:hover {
  border-color: var(--gold-dark);
  background: var(--grey-dark);
}

.step-number {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--grey);
  line-height: 1;
  margin-bottom: 1.5rem;
  transition: color 0.4s;
}

.process-step:hover .step-number {
  color: var(--gold-dark);
}

.process-step h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.process-step p {
  font-size: 0.9rem;
  font-weight: 300;
  line-height: 1.7;
  color: var(--white-dim);
}

/* --- Quote --- */
.quote-section {
  padding: 8rem 3rem;
  text-align: center;
  border-top: 1px solid var(--grey);
  position: relative;
  overflow: hidden;
}

.quote-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 50% 50% at 50% 50%, rgba(201, 168, 76, 0.04) 0%, transparent 70%);
}

.big-quote {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 4rem);
  font-weight: 700;
  line-height: 1.3;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.quote-mark {
  font-size: 1.5em;
  line-height: 0;
  vertical-align: -0.15em;
}

/* --- Newsletter --- */
.newsletter {
  padding: 8rem 3rem;
  border-top: 1px solid var(--grey);
  text-align: center;
}

.newsletter-content {
  max-width: 600px;
  margin: 0 auto;
}

.newsletter-sub {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.7;
  color: var(--white-dim);
  margin-top: 1.5rem;
  margin-bottom: 3rem;
}

.newsletter-form {
  position: relative;
}

.form-group {
  display: flex;
  gap: 0;
  max-width: 480px;
  margin: 0 auto;
}

.form-group input {
  flex: 1;
  padding: 1rem 1.5rem;
  background: var(--grey-dark);
  border: 1px solid var(--grey-mid);
  border-right: none;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.3s;
}

.form-group input:focus {
  border-color: var(--gold);
}

.form-group input::placeholder {
  color: var(--grey-light);
}

.form-group button {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.5rem;
  background: var(--gold);
  color: var(--black);
  border: 1px solid var(--gold);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.3s;
}

.form-group button:hover {
  background: var(--gold-light);
}

.form-note {
  font-size: 0.75rem;
  color: var(--grey-light);
  margin-top: 1rem;
}

.form-success {
  font-size: 1rem;
  color: var(--gold);
  font-weight: 500;
  margin-top: 1rem;
  display: none;
}

.newsletter-form.submitted .form-group {
  display: none;
}

.newsletter-form.submitted .form-note {
  display: none;
}

.newsletter-form.submitted .form-success {
  display: block;
}

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--grey);
  padding: 4rem 3rem 2rem;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto 4rem;
  gap: 4rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 900;
  display: block;
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--grey-light);
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 4rem;
}

.footer-col h4 {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 1.25rem;
}

.footer-col a,
.footer-col p {
  display: block;
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--grey-light);
  margin-bottom: 0.6rem;
  transition: color 0.3s;
}

.footer-col a:hover {
  color: var(--gold);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid var(--grey);
  font-size: 0.75rem;
  color: var(--grey-light);
}

/* --- Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

/* stagger children */
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .story-left {
    position: static;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding: 2rem;
  }

  .hero-badge {
    display: none;
  }

  .hero-scroll-hint {
    right: 2rem;
    bottom: 2rem;
  }

  .horizontal-header,
  .horizontal-track {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .bike-card {
    width: 320px;
  }

  .bike-card-img {
    height: 240px;
  }

  .story,
  .process,
  .quote-section,
  .newsletter,
  .footer {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .story-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-top {
    flex-direction: column;
    gap: 3rem;
  }

  .footer-links {
    gap: 2rem;
    flex-wrap: wrap;
  }

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

  .form-group {
    flex-direction: column;
  }

  .form-group input {
    border-right: 1px solid var(--grey-mid);
    border-bottom: none;
  }

  .nav {
    padding: 1.25rem 2rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.8rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .big-quote {
    font-size: 1.6rem;
  }

  .bike-card {
    width: 280px;
  }

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