/* Global reset and palette */
:root {
  --bg: #000;
  --card: rgba(255,255,255,.08);
  --card-border: rgba(255,255,255,.18);
  --text: #e8f4ff;
  --muted: #b9c7d9;
  --accent: #7df4ff;
  --cta: rgba(0,255,235,.25);
  --cta-border: rgba(125,255,248,.8);
  --glow: 0 0 14px rgba(0,255,255,.65);
  --radius: 14px;
}

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

html, body {
  height: 100%;
}

body {
  margin: 0;
  padding: 0;
  background: #000;
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

img { max-width: 100%; height: auto; display: block; }

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header / navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(0,0,0,.6);
  border-bottom: 1px solid rgba(255,255,255,.15);
  backdrop-filter: saturate(180%) blur(6px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .25rem .6rem;
  border-radius: 999px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.18);
}

.brand-name {
  font-weight: 700;
  color: #e9f3ff;
}

.brand-emoji {
  filter: drop-shadow(0 0 8px rgba(0,255,255,.7));
}

.main-nav {
  display: flex;
  gap: .5rem;
}

.nav-link {
  padding: .5rem .75rem;
  border-radius: 6px;
  color: #d9e7ff;
  transition: background .2s;
  outline: none;
}

.nav-link:hover {
  background: rgba(125,255,248,.15);
}

@media (min-width: 768px) {
  .nav-link { padding: .6rem .9rem; }
}

/* Hero section */
.hero { padding: 2rem 0; }

.grid-2col {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  align-items: center;
  padding: 0 1rem;
}

@media (min-width: 900px) {
  .grid-2col {
    grid-template-columns: 1fr 1fr;
    padding: 2rem 0;
  }
}

.hero-copy { padding: 0; }

h1 {
  font-size: clamp(2rem, 2.6vw + 1rem, 3.5rem);
  line-height: 1.04;
  margin: 0 0 .75rem;
  color: #eef6ff;
  text-shadow: 0 0 12px rgba(0,255,255,.9);
}

.subhead {
  color: #d9e6f7;
  font-size: clamp(1rem, .8vw + .9rem, 1.25rem);
  margin-bottom: .75rem;
}

.cta {
  display: inline-block;
  padding: .9rem 1.4rem;
  border-radius: 999px;
  border: 1px solid rgba(125,255,248,.8);
  color: #eaffff;
  background: linear-gradient(135deg, rgba(0,255,255,.25), rgba(180,255,255,.15));
  box-shadow: 0 6px 20px rgba(0,255,255,.5);
  font-weight: 700;
  letter-spacing: .2px;
  transition: transform .2s ease, box-shadow .2s ease;
  text-shadow: 0 0 6px rgba(0,255,255,.6);
}

.cta:hover { transform: translateY(-1px); box-shadow: 0 10px 26px rgba(0,255,255,.75); }

.cta:focus-visible {
  outline: 3px solid #00ffd5;
  outline-offset: 2px;
}

.hero-media {
  min-height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: .5rem;
  border-radius: 14px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.15);
  backdrop-filter: blur(6px);
}

.hero-media img {
  width: 100%;
  max-width: 520px;
  filter: saturate(110%) contrast(105%);
}

/* Sections */
.features {
  padding: 2rem 1rem;
}

.features h2,
.testimonials h2 {
  font-size: 1.5rem;
  color: #eaf6ff;
  margin-bottom: .75rem;
}

.feature-list {
  list-style: none;
  display: grid;
  gap: .6rem;
  padding: 0;
  margin: 0;
  grid-template-columns: 1fr;
}

@media (min-width: 520px) {
  .feature-list { grid-template-columns: repeat(2, 1fr); }
}

.feature-list li {
  padding: .5rem 0;
  color: #d8e6fb;
}

/* Testimonials */
.testimonials {
  padding: 1.5rem;
  padding-bottom: 2rem;
}

.testimonial-grid {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 12px;
  padding: .9rem;
  margin-bottom: .9rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.15);
}

.testimonial-grid blockquote {
  font-style: italic;
  color: #eaf6ff;
  margin: 0 0 .25rem;
}

.testimonial-grid cite {
  display: block;
  color: #cbd6ea;
}

/* Ad / Product section in footer */
#ad {
  padding: 1rem;
  display: flex;
  justify-content: center;
}

.ad-link {
  color: #d6fbff;
  text-decoration: none;
  padding: .65rem 1rem;
  border-radius: 999px;
  background: rgba(0,255,212,.15);
  border: 1px solid rgba(0,255,212,.6);
  box-shadow: 0 2px 8px rgba(0,255,212,.5);
}

/* Footer wrapper */
.site-footer {
  padding: 1rem 0;
}