:root {
  color-scheme: dark;
  --bg: #08101e;
  --surface: #111e2f;
  --surface-soft: #16273f;
  --text: #eef5ff;
  --muted: #9bb3cc;
  --accent: #4f8cff;
  --accent-soft: rgba(79, 140, 255, 0.16);
  --radius: 24px;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
}

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 58vh;
  background: linear-gradient(180deg, rgba(8, 16, 30, 0.92), rgba(8, 16, 30, 0.76) 35%, rgba(8, 16, 30, 0.6) 60%),
              url("assets/Banner-Full.jpeg") center top/cover no-repeat;
  mask-image: linear-gradient(180deg, rgba(0,0,0,1) 0%, rgba(0,0,0,0.95) 45%, rgba(0,0,0,0.3) 70%, rgba(0,0,0,0) 100%);
  z-index: 0;
  pointer-events: none;
}

body {
  position: relative;
  z-index: 1;
  line-height: 1.6;
}

.page-shell {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 3rem 0 4rem;
  position: relative;
  z-index: 1;
}

.site-header {
  display: flex;
  align-items: center;
  padding: 1.5rem 0 0 2rem;
  position: relative;
  z-index: 2;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: inherit;
}

.brand img {
  display: block;
  width: 7rem;
  height: auto;
}

.hero {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: center;
  margin-bottom: 3rem;
  padding: 2.5rem;
  border-radius: 36px;
  background: rgba(212, 217, 224, 0.01);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 16, 30, 0.62) 0%, rgba(8, 16, 30, 0.32) 35%, rgba(8, 16, 30, 0.54) 100%);
  pointer-events: none;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 38rem;
}

.eyebrow {
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  font-size: 0.85rem;
}

h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(2.5rem, 4vw, 4rem);
  line-height: 1.02;
}

.hero p {
  color: var(--muted);
  max-width: 38rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.4rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.primary {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 18px 50px rgba(79, 140, 255, 0.18);
}

.secondary {
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text);
  background: rgba(255,255,255,0.04);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.device-card {
  width: min(100%, 360px);
  border-radius: 32px;
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  padding: 1.5rem;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 24px 80px rgba(0,0,0,0.24);
}

.status-chip {
  display: inline-block;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  background: rgba(79, 140, 255, 0.18);
  color: var(--accent);
  font-size: 0.84rem;
  margin-bottom: 1.4rem;
}

.device-screen {
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
  padding: 2rem;
}

.screen-card {
  background: rgba(255,255,255,0.05);
  border-radius: 24px;
  padding: 1.8rem;
}

.screen-card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.4rem;
}

.screen-card p {
  margin: 0;
  color: var(--muted);
}

.features,
.notify {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 2.2rem;
  margin-bottom: 1.5rem;
}

.features h2,
.notify h2 {
  margin-top: 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 1.6rem;
}

.feature-grid article {
  padding: 1.5rem;
  border-radius: 22px;
  background: rgba(255,255,255,0.03);
}

.feature-title {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 0.9rem;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 14px;
  background: rgba(79, 140, 255, 0.18);
  color: var(--accent);
}

.feature-icon svg {
  width: 1.1rem;
  height: 1.1rem;
  display: block;
}

.feature-grid h3 {
  margin: 0;
}

.feature-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.notify {
  display: grid;
  gap: 1.5rem;
}

.notify-form {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr auto;
}

.notify-status {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text);
}

.notify-status.error {
  color: #f57a7a;
}

.notify-status.success {
  color: #7ff4b1;
}

.notify-form input {
  width: 100%;
  min-height: 3rem;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 14px;
  padding: 0 1rem;
  background: rgba(255,255,255,0.05);
  color: var(--text);
}

.notify-form input::placeholder {
  color: rgba(235,245,255,0.55);
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .page-shell {
    padding: 2rem 0 3rem;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .notify-form {
    grid-template-columns: 1fr;
  }
}