/* =========================
   Brand Variables
   ========================= */
:root {
  --bg: #070f1a;
  --bg2: #0b1a2a;

  --text: #eaf2ff;
  --muted: rgba(234, 242, 255, 0.72);

  --accent: #39c6ff;
  --accent2: #34e7d1;

  --line: rgba(255,255,255,0.10);
  --panel: rgba(255,255,255,0.04);
  --shadow: rgba(57, 198, 255, 0.18);
}

/* =========================
   Base Reset
   ========================= */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  color: var(--text);
  line-height: 1.6;

  background:
    radial-gradient(1200px 700px at 18% -10%, rgba(57, 198, 255, 0.18), transparent 60%),
    radial-gradient(900px 600px at 92% 12%, rgba(52, 231, 209, 0.12), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg2));
}

/* =========================
   Layout
   ========================= */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* =========================
   Header
   ========================= */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(7, 15, 26, 0.75);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  flex-wrap: wrap; /* critical for mobile */
  padding: 0.75rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: inherit;
  flex: 1 1 auto;
  min-width: 260px;
}

.brand-logo {
  height: 4.5rem; /* responsive, not px-locked */
  width: auto;
  display: block;
  flex-shrink: 0;
  filter:
    drop-shadow(0 8px 20px rgba(0,0,0,0.35))
    drop-shadow(0 0 12px rgba(57, 198, 255, 0.25));
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.brand-name {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: 0.2px;
  line-height: 1.1;
}

.brand-tag {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.2;
}

/* =========================
   Hero
   ========================= */
.hero {
  padding: 4rem 0;
}

.hero h1,
.hero h2 {
  font-size: 2.4rem;
  margin-bottom: 0.5rem;
}

.hero p,
.lead {
  max-width: 60ch;
  color: var(--muted);
}

/* =========================
   Buttons & Nav
   ========================= */
.actions {
  margin-top: 1.5rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.nav-link {
  text-decoration: underline;
  text-decoration-color: rgba(255,255,255,0.25);
}

.nav-link:hover {
  text-decoration-color: rgba(57, 198, 255, 0.55);
}

.btn {
  padding: 0.6rem 1.1rem;
  border-radius: 10px;
  text-decoration: none;
  border: 1px solid var(--line);
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #07101a;
  box-shadow: 0 12px 28px var(--shadow);
  font-weight: 650;
}
.btn.primary:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(57, 198, 255, 0.35);
}

.btn.secondary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #07101a;
  box-shadow: 0 12px 28px var(--shadow);
  font-weight: 650;
}

.btn.secondary:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(57, 198, 255, 0.35);
}

/* =========================
   Panels / Sections
   ========================= */
.section {
  margin-top: 3rem;
}

.section.alt {
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

/* =========================
   Footer
   ========================= */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 4rem;
  color: var(--muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}