/* ── RESET & BASE ────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Dark — black + baby blue */
  --bg:          #000000;
  --bg-subtle:   #0a0a0a;
  --bg-muted:    #141414;
  --border:      #1f1f1f;
  --border-2:    #2e2e2e;
  --fg:          #ffffff;
  --fg-2:        #f0f0f0;
  --muted:       #888888;
  --dim:         #555555;
  --accent:      #ffffff;
  --accent-fg:   #000000;
  --card-bg:     #0a0a0a;
  --card-border: #1f1f1f;
  --blue:        #7ab8f5;
  --blue-2:      #5a9fd4;
  --blue-glow:   rgba(122,184,245,0.15);
  --radius:      0.625rem;
  --radius-sm:   0.375rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-pill: 100px;
  --max-w:       1160px;
  --shadow-sm:   0 1px 2px rgba(0,0,0,0.4);
  --shadow:      0 1px 3px rgba(0,0,0,0.5), 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md:   0 4px 6px rgba(0,0,0,0.5), 0 2px 4px rgba(0,0,0,0.4);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  font-size: 15px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── NAV ─────────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0,0,0,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 5%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo {
  font-size: 15px;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.3px;
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-logo .accent { color: var(--blue); }

.nav-links {
  display: flex;
  gap: 0;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
}

.nav-links a:hover { color: var(--fg); background: var(--bg-muted); }
.nav-links a.active { color: var(--fg); font-weight: 600; }

.nav-cta {
  background: #ffffff !important;
  color: #000000 !important;
  font-weight: 600 !important;
  font-size: 13.5px !important;
  padding: 7px 16px !important;
  border-radius: var(--radius-sm) !important;
  transition: opacity 0.15s !important;
  margin-left: 4px !important;
}

.nav-cta:hover { opacity: 0.88 !important; background: #ffffff !important; }

/* ── LAYOUT ──────────────────────────────────────────── */
section { padding: 80px 5%; }

.section-inner { max-width: var(--max-w); margin: 0 auto; }

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--blue);
  margin-bottom: 12px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.section-header { margin-bottom: 48px; }
.section-header.center { text-align: center; }
.section-header.center .section-sub { margin: 0 auto; }

h1 {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -2px;
  color: var(--fg);
  margin-bottom: 20px;
}

h2 {
  font-size: clamp(26px, 3.5vw, 42px);
  font-weight: 700;
  letter-spacing: -1.2px;
  color: var(--fg);
  line-height: 1.12;
  margin-bottom: 12px;
}

h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 6px;
  letter-spacing: -0.2px;
}

.section-sub {
  font-size: 15.5px;
  color: var(--muted);
  max-width: 480px;
  line-height: 1.72;
}

.red { color: var(--blue); }

/* ── BUTTONS ─────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 600;
  font-family: inherit;
  border: none;
  cursor: pointer;
  transition: opacity 0.15s, background 0.15s, border-color 0.15s;
  white-space: nowrap;
  border-radius: var(--radius-sm);
  padding: 9px 18px;
  line-height: 1;
}

.btn-primary {
  background: #ffffff;
  color: #000000;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.1);
}

.btn-primary:hover { opacity: 0.88; }

.btn-red {
  background: var(--blue);
  color: #000000;
  box-shadow: var(--shadow-sm);
}

.btn-red:hover { opacity: 0.88; }

.btn-outline {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border-2);
}

.btn-outline:hover { background: var(--bg-muted); border-color: var(--border-2); }

.btn-ghost {
  background: transparent;
  color: var(--muted);
  padding: 8px 14px;
}

.btn-ghost:hover { background: var(--bg-muted); color: var(--fg); }

.btn-blue {
  background: var(--blue);
  color: #000000;
  font-weight: 600;
}

.btn-blue:hover { opacity: 0.88; }

.btn-sm { font-size: 12.5px; padding: 7px 14px; }
.btn-lg { font-size: 14.5px; padding: 11px 22px; }

/* ── CARDS ───────────────────────────────────────────── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.card:hover {
  border-color: var(--border-2);
  box-shadow: var(--shadow-md);
}

/* ── BADGE ───────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-2);
  background: var(--bg-muted);
  color: var(--muted);
}

.badge-dark {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
}

.badge-red {
  background: rgba(122,184,245,0.1);
  border-color: rgba(122,184,245,0.3);
  color: var(--blue);
}

.badge-light {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 11px;
}

/* ── TAG ─────────────────────────────────────────────── */
.tag {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: var(--radius-sm);
  background: var(--bg-muted);
  border: 1px solid var(--border);
  color: var(--muted);
}

/* ── PAGE HERO ───────────────────────────────────────── */
.page-hero {
  padding: 72px 5% 64px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}

.page-hero-inner { max-width: var(--max-w); margin: 0 auto; }
.page-hero h1 { font-size: clamp(28px, 3.5vw, 48px); margin-bottom: 12px; }
.page-hero .section-sub { max-width: 520px; }

/* ── DIVIDER ─────────────────────────────────────────── */
hr { border: none; border-top: 1px solid var(--border); margin: 0; }

/* ── FOOTER ──────────────────────────────────────────── */
footer {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
}

.footer-top {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 52px 5% 40px;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand .nav-logo {
  color: var(--fg);
  font-size: 15px;
  margin-bottom: 10px;
  display: inline-block;
  text-decoration: none;
}

.footer-brand p {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.72;
  max-width: 240px;
  margin-bottom: 16px;
}

.footer-col h4 {
  font-size: 12px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 14px;
  letter-spacing: 0.1px;
}

.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }

.footer-col a {
  font-size: 13.5px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}

.footer-col a:hover { color: var(--fg); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 16px 5%;
  max-width: calc(var(--max-w) + 10%);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.footer-copy { font-size: 12.5px; color: var(--dim); }
.footer-sub-links { display: flex; gap: 18px; }
.footer-sub-links a { font-size: 12.5px; color: var(--dim); text-decoration: none; transition: color 0.15s; }
.footer-sub-links a:hover { color: var(--muted); }