/* ===================================
   BARNETXEA - Professional Redesign
   Clean, minimal, premium design
   =================================== */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-bg: #09090b;
  --color-surface: #18181b;
  --color-surface-2: #27272a;
  --color-border: #3f3f46;
  --color-border-subtle: rgba(255,255,255,0.06);
  --color-text: #fafafa;
  --color-text-secondary: #a1a1aa;
  --color-text-muted: #71717a;
  --color-accent: #818cf8;
  --color-accent-bright: #a5b4fc;
  --color-accent-dim: #4f46e5;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Sora', var(--font-sans);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

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

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent-bright); }
ul { list-style: none; }

.skip-link {
  position: absolute; top: -100%; left: 1rem;
  background: var(--color-accent); color: #fff;
  padding: 0.5rem 1rem; border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  z-index: 10000; font-weight: 600; font-size: 0.875rem;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 0; color: #fff; }

/* --- Noise texture overlay --- */
body::before {
  content: ''; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  opacity: 0.015;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* --- Container --- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 2rem; position: relative; z-index: 1; }

/* =========================
   NAVBAR
   ========================= */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 1rem 0;
  background: rgba(9,9,11,0.8);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: background var(--transition), padding var(--transition);
}
.navbar.scrolled { padding: 0.6rem 0; background: rgba(9,9,11,0.95); }
.navbar .container { display: flex; align-items: center; justify-content: space-between; }
.nav-brand { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; }
.nav-logo { width: 36px; height: 36px; filter: brightness(0) invert(1); opacity: 0.9; }
.nav-brand-text { font-family: var(--font-display); font-weight: 700; font-size: 1.125rem; color: var(--color-text); letter-spacing: -0.01em; }
.nav-links { display: flex; gap: 0.25rem; }
.nav-links a {
  padding: 0.5rem 1rem; border-radius: var(--radius-sm);
  color: var(--color-text-secondary); font-size: 0.875rem; font-weight: 500;
  transition: all var(--transition);
}
.nav-links a:hover { color: var(--color-text); background: var(--color-border-subtle); }

/* =========================
   HERO SECTION
   ========================= */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 8rem 2rem 6rem; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -40%; left: 50%; transform: translateX(-50%);
  width: 800px; height: 800px; border-radius: 50%;
  background: radial-gradient(circle, rgba(99,102,241,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(129,140,248,0.2), transparent);
}
.hero-content { position: relative; z-index: 1; max-width: 720px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.375rem 1rem; margin-bottom: 2rem;
  background: rgba(99,102,241,0.1); border: 1px solid rgba(99,102,241,0.2);
  border-radius: 100px; font-size: 0.8125rem; font-weight: 500; color: var(--color-accent);
}
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
.hero h1 {
  font-family: var(--font-display); font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800; line-height: 1.1; letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #fff 0%, #a1a1aa 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero p {
  font-size: 1.125rem; color: var(--color-text-secondary);
  line-height: 1.75; max-width: 560px; margin: 0 auto 2.5rem;
}
.hero-cta {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  background: var(--color-accent-dim); color: #fff;
  border-radius: var(--radius-sm); font-weight: 600; font-size: 0.9375rem;
  transition: all var(--transition); border: 1px solid transparent;
}
.hero-cta:hover { background: var(--color-accent); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 20px rgba(79,70,229,0.4); }
.hero-scroll {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  color: var(--color-text-muted); font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase;
}
.hero-scroll .line { width: 1px; height: 40px; background: linear-gradient(to bottom, var(--color-text-muted), transparent); animation: scrollLine 2s ease-in-out infinite; }
@keyframes scrollLine { 0%,100% { opacity: 0.3; transform: scaleY(0.5); } 50% { opacity: 1; transform: scaleY(1); } }

/* =========================
   SECTIONS - General
   ========================= */
.section { padding: 6rem 0; position: relative; }
.section-header { text-align: center; margin-bottom: 4rem; }
.section-label {
  display: inline-block; font-size: 0.75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--color-accent); margin-bottom: 0.75rem;
}
.section-title {
  font-family: var(--font-display); font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; color: var(--color-text);
}
.section-desc {
  font-size: 1.0625rem; color: var(--color-text-secondary); max-width: 600px;
  margin: 1rem auto 0; line-height: 1.7;
}
.section + .section { border-top: 1px solid var(--color-border-subtle); }

/* =========================
   FEATURES GRID
   ========================= */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.feature-card {
  padding: 2rem; border-radius: var(--radius-lg);
  background: var(--color-surface); border: 1px solid var(--color-border-subtle);
  transition: all var(--transition); position: relative; overflow: hidden;
}
.feature-card:hover { border-color: rgba(129,140,248,0.15); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.feature-icon {
  width: 48px; height: 48px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  background: rgba(99,102,241,0.1); color: var(--color-accent);
  font-size: 1.25rem; margin-bottom: 1.25rem;
}
.feature-card h3 { font-family: var(--font-display); font-size: 1.125rem; font-weight: 600; margin-bottom: 0.625rem; color: var(--color-text); }
.feature-card p { font-size: 0.9375rem; color: var(--color-text-secondary); line-height: 1.65; }

/* =========================
   STATS
   ========================= */
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
}
.stat-item {
  text-align: center; padding: 2rem 1rem;
  background: var(--color-surface); border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg); transition: all var(--transition);
}
.stat-item:hover { border-color: rgba(129,140,248,0.15); }
.stat-number {
  font-family: var(--font-display); font-size: 2.25rem; font-weight: 800;
  color: var(--color-text); line-height: 1; margin-bottom: 0.375rem;
  letter-spacing: -0.02em;
}
.stat-label { font-size: 0.8125rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.08em; font-weight: 500; }

/* =========================
   PRIVACY CTA
   ========================= */
.privacy-cta {
  text-align: center; padding: 4rem 2rem;
  background: var(--color-surface); border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl); max-width: 800px; margin: 0 auto;
}
.privacy-cta h2 { font-family: var(--font-display); font-size: 1.75rem; font-weight: 700; margin-bottom: 1rem; }
.privacy-cta p { color: var(--color-text-secondary); font-size: 1rem; line-height: 1.7; max-width: 560px; margin: 0 auto 2rem; }
.privacy-badges { display: flex; justify-content: center; gap: 2rem; margin-top: 2rem; }
.privacy-badge { display: flex; flex-direction: column; align-items: center; gap: 0.375rem; }
.privacy-badge i { font-size: 1.25rem; color: var(--color-accent); }
.privacy-badge span { font-size: 0.8125rem; color: var(--color-text-muted); font-weight: 500; }

/* =========================
   BUTTONS
   ========================= */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.6875rem 1.5rem; border-radius: var(--radius-sm);
  font-size: 0.9375rem; font-weight: 600; transition: all var(--transition);
  text-decoration: none; cursor: pointer; border: none;
}
.btn-primary { background: var(--color-accent-dim); color: #fff; border: 1px solid transparent; }
.btn-primary:hover { background: var(--color-accent); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 20px rgba(79,70,229,0.3); }
.btn-secondary { background: transparent; color: var(--color-text-secondary); border: 1px solid var(--color-border); }
.btn-secondary:hover { color: var(--color-text); border-color: var(--color-text-muted); background: var(--color-surface); }

/* =========================
   FOOTER
   ========================= */
.footer {
  padding: 3rem 0; border-top: 1px solid var(--color-border-subtle);
  margin-top: 2rem;
}
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.footer-brand { display: flex; align-items: center; gap: 0.75rem; }
.footer-logo { width: 28px; height: 28px; filter: brightness(0) invert(1); opacity: 0.6; }
.footer-brand-text { font-size: 0.875rem; color: var(--color-text-muted); }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { font-size: 0.8125rem; color: var(--color-text-muted); transition: color var(--transition); }
.footer-links a:hover { color: var(--color-text-secondary); }
.footer-copy { font-size: 0.8125rem; color: var(--color-text-muted); }

/* =========================
   PAGE HEADER (subpages)
   ========================= */
.page-header {
  padding: 8rem 0 3rem; text-align: center;
  border-bottom: 1px solid var(--color-border-subtle);
  position: relative;
}
.page-header::before {
  content: ''; position: absolute; top: -20%; left: 50%; transform: translateX(-50%);
  width: 600px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(99,102,241,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.page-header-icon { font-size: 1.5rem; color: var(--color-accent); margin-bottom: 1rem; display: block; }
.page-header h1 {
  font-family: var(--font-display); font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700; letter-spacing: -0.02em; margin-bottom: 0.5rem;
  position: relative;
}
.page-header p {
  font-size: 1rem; color: var(--color-text-muted); position: relative;
}

/* =========================
   PRIVACY PAGE - App Cards
   ========================= */
.privacy-intro { max-width: 700px; margin: 0 auto 4rem; text-align: center; }
.privacy-intro h2 { font-family: var(--font-display); font-size: 1.75rem; font-weight: 700; margin-bottom: 1rem; }
.privacy-intro p { color: var(--color-text-secondary); font-size: 1rem; line-height: 1.7; }
.privacy-intro p + p { margin-top: 0.75rem; }
.apps-grid-title {
  font-family: var(--font-display); font-size: 1.125rem; font-weight: 600;
  color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.08em;
  text-align: center; margin-bottom: 2rem;
}
.apps-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; max-width: 700px; margin: 0 auto 3rem; }
.app-card {
  display: flex; align-items: center; gap: 1rem;
  padding: 1.25rem 1.5rem; border-radius: var(--radius-md);
  background: var(--color-surface); border: 1px solid var(--color-border-subtle);
  color: var(--color-text); text-decoration: none;
  transition: all var(--transition);
}
.app-card:hover { border-color: rgba(129,140,248,0.2); transform: translateY(-1px); box-shadow: var(--shadow-sm); color: var(--color-text); }
.app-card-icon {
  width: 44px; height: 44px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  background: rgba(99,102,241,0.1); color: var(--color-accent); font-size: 1.125rem;
}
.app-card-info h4 { font-size: 0.9375rem; font-weight: 600; margin-bottom: 0.125rem; }
.app-card-info p { font-size: 0.8125rem; color: var(--color-text-muted); margin: 0; }
.app-card .arrow { margin-left: auto; color: var(--color-text-muted); transition: all var(--transition); font-size: 0.875rem; }
.app-card:hover .arrow { color: var(--color-accent); transform: translateX(2px); }

/* =========================
   POLICY PAGE
   ========================= */
.policy-content { max-width: 740px; margin: 0 auto; padding: 3rem 0 4rem; }
.policy-section { padding: 1.75rem 0; border-bottom: 1px solid var(--color-border-subtle); }
.policy-section:last-of-type { border-bottom: none; }
.policy-section h2 {
  font-family: var(--font-display); font-size: 1.0625rem; font-weight: 600;
  color: var(--color-text); margin-bottom: 0.75rem;
  display: flex; align-items: center; gap: 0.625rem;
}
.section-number {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: var(--radius-sm);
  background: rgba(99,102,241,0.1); color: var(--color-accent);
  font-size: 0.8125rem; font-weight: 700; flex-shrink: 0;
}
.policy-section p { color: var(--color-text-secondary); font-size: 0.9375rem; line-height: 1.7; }
.third-party-links { margin: 0.75rem 0; padding: 0; }
.third-party-links li { margin-bottom: 0.5rem; }
.third-party-links a {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.375rem 0.75rem; border-radius: var(--radius-sm);
  background: rgba(99,102,241,0.06); border: 1px solid rgba(99,102,241,0.1);
  color: var(--color-accent); font-size: 0.875rem; transition: all var(--transition);
}
.third-party-links a:hover { background: rgba(99,102,241,0.12); border-color: rgba(99,102,241,0.25); }
.third-party-links a i { font-size: 0.75rem; }
.back-navigation {
  display: flex; gap: 0.75rem; justify-content: center;
  margin-top: 2.5rem; padding-top: 2rem; border-top: 1px solid var(--color-border-subtle);
}
.back-home { text-align: center; margin-top: 2rem; }

/* =========================
   ANIMATIONS
   ========================= */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-up { opacity: 0; transform: translateY(20px); transition: opacity 0.5s ease, transform 0.5s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* =========================
   RESPONSIVE
   ========================= */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .navbar .container { padding: 0 1.25rem; }
  .nav-links { display: none; }
  .hero { padding: 7rem 1.25rem 4rem; min-height: auto; }
  .hero-scroll { display: none; }
  .section { padding: 4rem 0; }
  .container { padding: 0 1.25rem; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .privacy-cta { padding: 2.5rem 1.5rem; }
  .privacy-badges { gap: 1.5rem; }
  .apps-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; gap: 1rem; }
  .footer-links { justify-content: center; }
  .page-header { padding: 7rem 0 2rem; }
  .back-navigation { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
  .stat-number { font-size: 1.75rem; }
  .stat-item { padding: 1.5rem 0.75rem; }
  .privacy-cta { border-radius: var(--radius-lg); }
}