/* ============================================
   AIRLUUMS — Landing Page Styles
   Black. Bold. Print zine energy.
   ============================================ */

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

:root {
  --black: #000000;
  --white: #ffffff;
  --off-white: #e8e8e8;
  --gray: #666666;
  --accent: #ff3c00;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--black);
  color: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- NAVIGATION ---- */

nav {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: 32px 40px;
  z-index: 10;
}

.logo {
  font-weight: 900;
  font-size: 1.1rem;
  letter-spacing: 0.3em;
  color: var(--white);
}

/* ---- HERO ---- */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.grain {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  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)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 64px;
  max-width: 1100px;
  width: 100%;
  padding: 0 24px;
}

.hero-left {
  flex: 0 0 auto;
}

.hero-right {
  flex: 1;
  text-align: right;
}

/* ---- MAGAZINE MOCKUP ---- */

.magazine-mockup {
  position: relative;
  width: 280px;
}

.magazine-cover {
  position: relative;
  width: 280px;
  height: 370px;
  background: linear-gradient(145deg, #1a1a1a 0%, #0d0d0d 50%, #1a1a1a 100%);
  border: 1px solid rgba(255,255,255,0.1);
  overflow: hidden;
  box-shadow:
    8px 8px 0 rgba(255,60,0,0.15),
    -2px 0 40px rgba(255,60,0,0.05);
}

.magazine-cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(255,60,0,0.03) 2px,
      rgba(255,60,0,0.03) 4px
    );
  pointer-events: none;
}

.magazine-cover::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
}

.magazine-inner {
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 32px 28px;
}

.mag-label {
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.4em;
  color: var(--accent);
  text-transform: uppercase;
}

.mag-title {
  font-size: 4.5rem;
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--white);
}

.mag-footer {
  font-size: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.5em;
  color: rgba(255,255,255,0.25);
  text-transform: uppercase;
}

.magazine-shadow {
  position: absolute;
  bottom: -12px;
  left: 16px;
  right: 16px;
  height: 24px;
  background: rgba(255,60,0,0.08);
  filter: blur(16px);
  border-radius: 50%;
}

.hero h1 {
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 32px;
  text-transform: uppercase;
}

.hero h1 .accent {
  color: var(--accent);
}

.subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--off-white);
  line-height: 1.6;
  max-width: 480px;
  margin-left: auto;
  margin-bottom: 48px;
  font-weight: 400;
}

/* ---- CTA BUTTON ---- */

.cta-button {
  display: inline-block;
  background: var(--white);
  color: var(--black);
  font-family: var(--font);
  font-weight: 900;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  padding: 18px 48px;
  border: 2px solid var(--white);
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s ease;
}

.cta-button:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}

.cta-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}

.cta-outline:hover {
  background: var(--white);
  color: var(--black);
}

/* ---- SCROLL HINT ---- */

.scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-hint span {
  display: block;
  width: 2px;
  height: 40px;
  background: var(--white);
  opacity: 0.3;
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.1; transform: scaleY(0.5); }
  50% { opacity: 0.4; transform: scaleY(1); }
}

/* ---- SECTIONS (SHARED) ---- */

section {
  padding: 120px 0;
}

section h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 64px;
  text-transform: uppercase;
  text-align: center;
}

/* ---- WHAT / FEATURES ---- */

.what {
  background: var(--black);
  border-top: 1px solid rgba(255,255,255,0.08);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  text-align: center;
}

.feature-number {
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1;
  color: var(--accent);
}

.feature-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  margin: 8px 0 16px;
  color: var(--gray);
  text-transform: uppercase;
}

.feature p {
  color: var(--off-white);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ---- HOW IT WORKS ---- */

.how {
  background: #0a0a0a;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.step {
  border-left: 2px solid var(--accent);
  padding-left: 24px;
}

.step-num {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 12px;
}

.step h3 {
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.step p {
  color: var(--off-white);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ---- PULL QUOTE ---- */

.quote-section {
  background: var(--accent);
  padding: 100px 0;
  text-align: center;
}

.quote-section blockquote {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
}

/* ---- PARTNERS ---- */

.partners {
  background: var(--black);
  border-top: 1px solid rgba(255,255,255,0.08);
  text-align: center;
}

.partner-pitch {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--off-white);
  line-height: 1.7;
  max-width: 650px;
  margin: -32px auto 64px;
}

.partner-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 64px;
}

.stat-value {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--gray);
  text-transform: uppercase;
}

/* ---- SIGNUP ---- */

.signup {
  background: #0a0a0a;
  text-align: center;
}

.signup p {
  color: var(--off-white);
  font-size: 1.05rem;
  margin: -32px auto 48px;
  max-width: 480px;
  line-height: 1.6;
}

.signup-form {
  display: flex;
  justify-content: center;
  gap: 0;
  max-width: 520px;
  margin: 0 auto;
}

.signup-form input {
  flex: 1;
  padding: 18px 24px;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  background: rgba(255,255,255,0.06);
  border: 2px solid rgba(255,255,255,0.15);
  border-right: none;
  color: var(--white);
  outline: none;
  transition: border-color 0.2s;
}

.signup-form input::placeholder {
  color: var(--gray);
}

.signup-form input:focus {
  border-color: var(--accent);
}

.signup-form .cta-button {
  border-left: none;
  white-space: nowrap;
}

.form-note {
  margin-top: 16px !important;
  font-size: 0.85rem !important;
  color: var(--accent) !important;
  min-height: 1.2em;
}

/* ---- FOOTER ---- */

footer {
  padding: 48px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-logo {
  font-weight: 900;
  font-size: 0.9rem;
  letter-spacing: 0.3em;
}

.footer-links a {
  color: var(--gray);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  transition: color 0.2s;
}

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

.footer-copy {
  color: var(--gray);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

/* ---- FADE-IN ANIMATIONS ---- */

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- RESPONSIVE ---- */

@media (max-width: 768px) {
  .hero-content {
    flex-direction: column;
    gap: 48px;
  }

  .hero-right {
    text-align: center;
  }

  .subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .magazine-mockup {
    width: 220px;
  }

  .magazine-cover {
    width: 220px;
    height: 290px;
  }

  .mag-title {
    font-size: 3.5rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .partner-stats {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .signup-form input {
    border-right: 2px solid rgba(255,255,255,0.15);
    border-bottom: none;
  }

  .signup-form .cta-button {
    border-left: 2px solid var(--white);
  }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  nav {
    padding: 24px;
  }
}