/* ── NS Browser – Global Stylesheet ───────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  --bg-main:   #080810;
  --bg-card:   #0f0f1a;
  --bg-glass:  rgba(255,255,255,0.03);
  --border:    rgba(255,255,255,0.08);
  --accent:    #6366f1;
  --accent2:   #8b5cf6;
  --green:     #10b981;
  --text:      #f1f5f9;
  --text-muted:#94a3b8;
  --text-dim:  #64748b;
  --gradient:  linear-gradient(135deg,#6366f1,#8b5cf6,#ec4899);
  --glow:      0 0 40px rgba(99,102,241,0.25);
  --radius:    16px;
  --font:      'Inter', sans-serif;
  --font-head: 'Space Grotesk', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-main);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-main); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ── Navigation ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(8,8,16,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 5%;
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-head);
  font-size: 1.3rem; font-weight: 700;
  color: var(--text); text-decoration: none;
}
.nav-logo span { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  color: var(--text-muted); text-decoration: none;
  font-size: 0.9rem; font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-cta {
  background: var(--accent); color: #fff !important;
  padding: 8px 20px; border-radius: 8px;
  font-weight: 600 !important;
  transition: all 0.2s !important;
}
.nav-cta:hover { background: var(--accent2) !important; transform: translateY(-1px); }
.nav-hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-hamburger span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: all 0.3s; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 12px;
  font-weight: 600; font-size: 0.95rem;
  text-decoration: none; border: none; cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
}
.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 24px rgba(99,102,241,0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(99,102,241,0.5); }
.btn-secondary {
  background: var(--bg-glass);
  color: var(--text);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
}
.btn-secondary:hover { background: rgba(255,255,255,0.07); border-color: var(--accent); transform: translateY(-2px); }
.btn-green { background: var(--green); color: #fff; box-shadow: 0 4px 20px rgba(16,185,129,0.3); }
.btn-green:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(16,185,129,0.45); }
.btn-outline { background: transparent; border: 1px solid var(--accent); color: var(--accent); }
.btn-outline:hover { background: rgba(99,102,241,0.1); }
.btn-sm { padding: 10px 20px; font-size: 0.85rem; }

/* ── Section ── */
section { padding: 100px 5%; }
.section-label {
  display: inline-block;
  font-size: 0.75rem; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(99,102,241,0.08);
  border: 1px solid rgba(99,102,241,0.2);
  padding: 5px 14px; border-radius: 20px;
  margin-bottom: 20px;
}
.section-title {
  font-family: var(--font-head);
  font-size: clamp(2rem,4vw,3rem);
  font-weight: 700; line-height: 1.15;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 1.1rem; color: var(--text-muted);
  max-width: 600px; line-height: 1.7;
  margin-bottom: 40px;
}
.text-center { text-align: center; }
.text-center .section-sub { margin-left: auto; margin-right: auto; }
.gradient-text { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.3s;
}
.card:hover { border-color: rgba(99,102,241,0.3); box-shadow: var(--glow); transform: translateY(-4px); }
.card-icon {
  width: 52px; height: 52px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(99,102,241,0.1);
  font-size: 1.5rem; margin-bottom: 18px;
}
.card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.card p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.6; }

/* ── Grid ── */
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }

/* ── Badge ── */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: 20px;
  font-size: 0.75rem; font-weight: 600;
}
.badge-green { background: rgba(16,185,129,0.12); color: var(--green); border: 1px solid rgba(16,185,129,0.2); }
.badge-purple { background: rgba(99,102,241,0.12); color: var(--accent); border: 1px solid rgba(99,102,241,0.2); }
.badge-orange { background: rgba(249,115,22,0.12); color: #f97316; border: 1px solid rgba(249,115,22,0.2); }

/* ── Footer ── */
footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 60px 5% 30px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 40px; }
.footer-brand p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; margin: 16px 0; }
.footer-col h4 { font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--text-dim); margin-bottom: 16px; }
.footer-col a { display: block; color: var(--text-muted); text-decoration: none; font-size: 0.9rem; margin-bottom: 10px; transition: color 0.2s; }
.footer-col a:hover { color: var(--text); }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; }
.footer-bottom p { color: var(--text-dim); font-size: 0.83rem; }
.social-links { display: flex; gap: 12px; }
.social-link {
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--bg-glass); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); text-decoration: none; font-size: 0.9rem;
  transition: all 0.2s;
}
.social-link:hover { border-color: var(--accent); color: var(--accent); }

/* ── Animations ── */
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }
@keyframes pulse-glow { 0%,100%{opacity:0.5} 50%{opacity:1} }
@keyframes gradient-shift { 0%{background-position:0% 50%} 50%{background-position:100% 50%} 100%{background-position:0% 50%} }
@keyframes fadeInUp { from{opacity:0;transform:translateY(30px)} to{opacity:1;transform:translateY(0)} }
@keyframes spin { to{transform:rotate(360deg)} }

.animate-float { animation: float 4s ease-in-out infinite; }
.fade-in { animation: fadeInUp 0.7s ease forwards; }

/* ── Glow orb backgrounds ── */
.orb {
  position: absolute; border-radius: 50%;
  filter: blur(80px); pointer-events: none; z-index: 0;
}
.orb-purple { width: 400px; height: 400px; background: rgba(99,102,241,0.15); }
.orb-green  { width: 300px; height: 300px; background: rgba(16,185,129,0.1); }
.orb-pink   { width: 350px; height: 350px; background: rgba(236,72,153,0.08); }

/* ── OS Download Tabs ── */
.os-tabs { display: flex; gap: 8px; margin-bottom: 24px; }
.os-tab {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-glass);
  color: var(--text-muted); font-size: 0.88rem; font-weight: 600;
  cursor: pointer; transition: all 0.2s;
}
.os-tab.active, .os-tab:hover { border-color: var(--accent); color: var(--text); background: rgba(99,102,241,0.08); }

/* ── Stat blocks ── */
.stat-block { text-align: center; }
.stat-block .stat-num {
  font-family: var(--font-head);
  font-size: 2.8rem; font-weight: 800;
  background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.stat-block .stat-label { color: var(--text-muted); font-size: 0.9rem; margin-top: 4px; }

/* ── FAQ ── */
.faq-item { border-bottom: 1px solid var(--border); padding: 20px 0; }
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  cursor: pointer; font-weight: 600; font-size: 1rem;
}
.faq-q span { color: var(--accent); font-size: 1.4rem; transition: transform 0.3s; }
.faq-a { color: var(--text-muted); font-size: 0.93rem; line-height: 1.7; padding-top: 12px; display: none; }
.faq-item.open .faq-a { display: block; }
.faq-item.open .faq-q span { transform: rotate(45deg); }

/* ── Table ── */
.compare-table { width: 100%; border-collapse: collapse; }
.compare-table th { background: rgba(99,102,241,0.1); color: var(--accent); font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; padding: 14px 20px; border: 1px solid var(--border); text-align: center; }
.compare-table td { padding: 14px 20px; border: 1px solid var(--border); text-align: center; color: var(--text-muted); font-size: 0.9rem; }
.compare-table tr:hover td { background: var(--bg-glass); }
.check { color: var(--green); font-size: 1.1rem; }
.cross { color: #ef4444; }

/* ── Hero gradient border card ── */
.gradient-border {
  position: relative; border-radius: var(--radius);
  background: var(--bg-card); padding: 2px;
  background: linear-gradient(var(--bg-card), var(--bg-card)) padding-box,
              var(--gradient) border-box;
  border: 2px solid transparent;
}

/* ── Breadcrumb ── */
.breadcrumb { display: flex; align-items: center; gap: 8px; color: var(--text-dim); font-size: 0.85rem; margin-bottom: 24px; }
.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }

/* ── Form ── */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--text-muted); margin-bottom: 8px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 16px;
  background: var(--bg-glass); border: 1px solid var(--border);
  border-radius: 10px; color: var(--text);
  font-family: var(--font); font-size: 0.93rem;
  outline: none; transition: border-color 0.2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--accent); }
.form-group textarea { resize: vertical; min-height: 120px; }

/* ── Page Hero ── */
.page-hero {
  padding: 160px 5% 80px;
  text-align: center;
  position: relative; overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(99,102,241,0.12), transparent);
  pointer-events: none;
}

/* ── Mobile ── */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 640px) {
  section { padding: 60px 5%; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: var(--bg-card); border-bottom: 1px solid var(--border); padding: 20px 5%; gap: 16px; }
  .os-tabs { flex-wrap: wrap; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
}

/* ── Material Icons & Logo Alignment ── */
.material-icons-outlined {
  vertical-align: middle;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.nav-logo img {
  height: 32px;
  width: auto;
  object-fit: contain;
  border-radius: 4px;
}