:root {
  --paper: #f0f4f8; /* Cool light gray */
  --ink: #0d1117; /* Deep blue-black */
  --blaze: #2962ff; /* Tech blue accent */
  --snow: #ffffff;
  --steel: #8b9bb4;
  
  --border-thick: 3px solid var(--ink);
  --shadow-hard: 6px 6px 0px var(--ink);
  --shadow-hard-hover: 2px 2px 0px var(--ink);
  --radius: 8px;
  --radius-lg: 16px;
  
  --font-mono: 'IBM Plex Mono', monospace;
  --font-sans: 'IBM Plex Sans', sans-serif;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--snow);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
h1, h2, h3 {
  font-family: var(--font-sans);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); margin-bottom: 24px; }
h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 20px; }
h3 { font-size: 1.5rem; margin-bottom: 12px; }
p { font-size: 1.125rem; margin-bottom: 24px; opacity: 0.9; }

/* Neubrutalist Components */
.neu-card {
  background: var(--white);
  border: var(--border-thick);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  padding: 32px;
}

.neu-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--tangerine);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 700;
  text-decoration: none;
  border: var(--border-thick);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  padding: 12px 24px;
  transition: all 0.1s ease;
  cursor: pointer;
}

.neu-btn:hover {
  transform: translate(4px, 4px);
  box-shadow: var(--shadow-hard-hover);
}

/* Header */
.header {
  padding: 24px 0;
  border-bottom: var(--border-thick);
  background: var(--tangerine);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.logo-box {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: 2px solid var(--ink);
}

.badge {
  background: var(--ink);
  color: var(--tangerine);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.8rem;
  vertical-align: super;
}

.nav a {
  margin-left: 24px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
}
.nav a:hover { text-decoration: underline; }

/* Hero */
.hero {
  display: flex;
  flex-direction: column;
  gap: 48px;
  padding: 80px 24px;
}

@media (min-width: 900px) {
  .hero {
    flex-direction: row;
    align-items: center;
    padding: 120px 24px;
  }
}

.hero-content {
  flex: 1;
}

.hero-subtitle {
  font-size: 1.25rem;
  max-width: 500px;
}

.pricing-badge {
  display: inline-block;
  background: var(--blaze);
  color: var(--white);
  border: var(--border-thick);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  padding: 16px 24px;
  margin-bottom: 32px;
  transform: rotate(-1deg);
}
.pricing-highlight {
  display: block;
  font-weight: 800;
  font-size: 1.25rem;
}
.pricing-sub {
  display: block;
  font-size: 1rem;
  opacity: 0.9;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.store-btn .btn-sub {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1;
}
.store-btn .btn-main {
  font-size: 1.25rem;
  line-height: 1;
  margin-top: 2px;
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  position: relative;
}

/* Device Frames */
.device-frame {
  padding: 12px;
  box-shadow: 16px 16px 0px rgba(17,17,17,0.1);
  position: relative;
  border: 4px solid var(--ink);
}

.device-frame img {
  display: block;
  width: 100%;
  border-radius: 28px;
  border: 2px solid var(--ink);
  position: relative;
  z-index: 1;
}

.device-frame.ios {
  background: var(--snow);
  border-radius: 48px;
}
.device-frame.ios::before {
  content: '';
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 26px;
  background: var(--ink);
  border-radius: 13px;
  z-index: 10;
}

.device-frame.android {
  background: var(--steel);
  border-radius: 24px;
}
.device-frame.android::before {
  content: '';
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: 14px;
  height: 14px;
  background: var(--ink);
  border-radius: 50%;
  z-index: 10;
}

.iphone-frame {
  max-width: 320px;
  transform: rotate(2deg);
}

.gallery-frame {
  max-width: 260px;
  flex: 1 1 220px;
}

.ipad-frame {
  max-width: 600px;
  transform: rotate(-1deg);
}

/* Features */
.features {
  background: var(--ink);
  color: var(--snow);
  padding: 100px 0;
}

.features .neu-card {
  background: var(--snow);
  color: var(--ink);
  box-shadow: 6px 6px 0px var(--tangerine);
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 768px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

/* Showcase */
.showcase {
  display: flex;
  flex-direction: column;
  gap: 64px;
  padding: 100px 24px;
}

@media (min-width: 900px) {
  .showcase {
    flex-direction: row-reverse;
    align-items: center;
  }
}

.showcase-content {
  flex: 1;
}
.showcase-image {
  flex: 1;
  display: flex;
  justify-content: center;
}

/* Footer */
.footer {
  background: var(--tangerine);
  border-top: var(--border-thick);
  padding: 48px 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-logo {
  font-weight: 800;
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.footer-right {
  display: flex;
  gap: 24px;
}

.footer-right a {
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
}
.footer-right a:hover {
  text-decoration: underline;
}