@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --color-bg: #000000;
  --color-surface: rgba(255, 255, 255, 0.03);
  --color-surface-hover: rgba(255, 255, 255, 0.08);
  --color-border: rgba(255, 255, 255, 0.1);
  --color-text-primary: #ffffff;
  --color-text-secondary: rgba(255, 255, 255, 0.6);
  --color-accent: #007aff;
  --neon-glow: rgba(0, 122, 255, 0.4);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  margin: 0;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
}

.text-gradient {
  background: linear-gradient(180deg, #FFFFFF 0%, rgba(255, 255, 255, 0.5) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.accent-gradient {
  background: linear-gradient(90deg, #007aff 0%, #34C759 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Glassmorphism Navbar */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1rem 2rem;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-sizing: border-box;
}

.nav-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
  margin-left: 1.5rem;
}

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

/* Buttons */
.btn-primary {
  background-color: var(--color-text-primary);
  color: var(--color-bg);
  padding: 0.8rem 1.5rem;
  border-radius: 999px;
  font-weight: 500;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: transform 0.2s ease;
}

.btn-primary:hover {
  transform: scale(1.02);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  padding: 0.8rem 1.5rem;
  border-radius: 999px;
  font-weight: 500;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background-color: var(--color-surface-hover);
}

/* Hero Section */
.hero {
  padding: 10rem 2rem 6rem;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 600px;
  background: radial-gradient(ellipse at center, var(--neon-glow) 0%, transparent 60%);
  z-index: -1;
  pointer-events: none;
  filter: blur(50px);
}

.hero h1 {
  font-size: clamp(3rem, 6vw, 4.5rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* App Store Preview */
.store-preview {
  max-width: 1280px;
  margin: 0 auto 3rem;
  padding: 1rem 2rem 3rem;
}

.section-kicker {
  color: #f5a20a;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 0.6rem;
  text-align: center;
  text-transform: uppercase;
}

.store-preview h2 {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.08;
}

.store-preview > p {
  max-width: 720px;
  margin: 1rem auto 2rem;
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  text-align: center;
}

.store-screenshot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  align-items: start;
}

.store-screenshot-grid figure {
  margin: 0;
  padding: 0.55rem;
  border: 1px solid var(--color-border);
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02)),
    rgba(255,255,255,0.03);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
}

.store-screenshot-grid img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 16px;
  background: #07111f;
}

.store-screenshot-grid figcaption {
  padding: 0.75rem 0.25rem 0.25rem;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.88rem;
  font-weight: 600;
  text-align: center;
}

/* Bento Grid */
.bento-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
}

.bento-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  padding: 2rem;
  transition: all 0.3s ease;
  overflow: visible;
  position: relative;
}

.bento-card:hover {
  background-color: var(--color-surface-hover);
  border-color: rgba(255, 255, 255, 0.2);
}

.bento-item-large {
  grid-column: span 12;
}

@media (min-width: 768px) {
  .bento-item-large { grid-column: span 8; }
  .bento-item-medium { grid-column: span 4; }
  .bento-item-full { grid-column: span 12; display: flex; align-items: center; gap: 2rem; }
}

@media (max-width: 900px) {
  .store-screenshot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .navbar {
    padding: 0.9rem 1rem;
  }

  .nav-links {
    gap: 0.6rem !important;
  }

  .nav-links a {
    display: none;
  }

  .store-preview {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .store-screenshot-grid {
    display: flex;
    gap: 1rem;
    margin-left: -1rem;
    margin-right: -1rem;
    overflow-x: auto;
    padding: 0 1rem 0.5rem;
    scroll-snap-type: x mandatory;
  }

  .store-screenshot-grid figure {
    flex: 0 0 76%;
    scroll-snap-align: center;
  }

  .bento-card {
    padding: 1.4rem;
  }
}

.bento-card > img,
.bento-card > * > img:not(.device-watch .screen img):not(.device-phone .screen img) {
  width: 100%;
  height: auto;
  border-radius: 12px;
  margin-top: 1.5rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.bento-card:hover > img,
.bento-card:hover > * > img:not(.device-watch .screen img):not(.device-phone .screen img) {
  transform: translateY(-5px);
}

.card-tag {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
  display: block;
}

/* Device Mockups (Pure CSS) */
.device-watch {
  position: relative; background: #121314; border-radius: 54px; padding: 4px; /* Series 11 ultra-thin edge-to-edge bezel */
  box-shadow: inset 0 2px 5px rgba(255,255,255,0.4), inset 0 -2px 5px rgba(0,0,0,0.9), 0 20px 40px rgba(0,0,0,0.5);
  border: 1px solid #333; margin-top: 1.5rem; width: 195px; align-self: flex-start;
}
.device-watch::after {
  /* Digital Crown */
  content: ''; position: absolute; right: -5px; top: 55px; width: 5px; height: 34px;
  background: #2a2b2c; border-radius: 0 4px 4px 0; border: 1px solid #111; border-left: none; box-shadow: inset 0 1px 2px rgba(255,255,255,0.2);
}
.device-watch::before {
  /* Side Button */
  content: ''; position: absolute; right: -2px; top: 110px; width: 2px; height: 50px;
  background: #222; border-radius: 0 2px 2px 0;
}
.device-watch .screen {
  border-radius: 50px; overflow: hidden; background: #000; position: relative;
}
.device-watch .screen img {
  width: 100%; height: auto; display: block;
}

.device-phone {
  position: relative;
  width: min(246px, 85%);
  margin-top: 1.5rem;
  align-self: center;
  padding: 7px;
  border-radius: 15.5% / 7.2%;
  background:
    linear-gradient(145deg, rgba(255,255,255,0.34) 0%, rgba(255,255,255,0.08) 8%, transparent 18%),
    linear-gradient(155deg, #3d3f43 0%, #15171a 34%, #07080a 55%, #2a2c30 100%);
  border: 1px solid rgba(255,255,255,0.18);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,0.08),
    inset 0 -10px 20px rgba(0,0,0,0.55),
    inset 0 10px 18px rgba(255,255,255,0.08),
    0 30px 60px rgba(0,0,0,0.7);
}
/* Side Buttons (Action, Volume Up/Down, Power) */
.device-phone::before {
  /* Power Button */
  content: '';
  position: absolute;
  right: -4px;
  top: 27%;
  width: 4px;
  height: 11.5%;
  background: linear-gradient(90deg, #0d0e10, #3a3c40);
  border-radius: 0 4px 4px 0;
  box-shadow: inset 1px 0 1px rgba(255,255,255,0.14);
}
.device-phone::after {
  /* Action + volume buttons */
  content: '';
  position: absolute;
  left: -4px;
  top: 15%;
  width: 4px;
  height: 25%;
  border-radius: 4px 0 0 4px;
  background:
    linear-gradient(
      to bottom,
      #34363a 0 15%,
      transparent 15% 32%,
      #34363a 32% 60%,
      transparent 60% 72%,
      #34363a 72% 100%
    );
  box-shadow: inset -1px 0 1px rgba(255,255,255,0.12);
}
.device-phone .screen {
  position: relative;
  aspect-ratio: 1320 / 2868;
  overflow: hidden;
  border-radius: 13.8% / 6.4%;
  background: #000;
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,0.05),
    0 0 0 1px rgba(0,0,0,0.55);
}
.device-phone .screen img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}
.feature-side-phone {
  flex: 0 0 min(250px, 34%);
  margin-top: 0;
}

.feature-merge-watch {
  align-self: center;
  margin-top: 1.25rem;
}

/* Footer */
footer {
  border-top: 1px solid var(--color-border);
  padding: 4rem 2rem;
  margin-top: 4rem;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

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