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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --accent: #7c3aed;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --dark-3: #334155;
  --light: #f8fafc;
  --light-2: #f1f5f9;
  --border: #e2e8f0;
  --text: #334155;
  --text-muted: #64748b;
  --white: #ffffff;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,.08);
  --shadow-lg: 0 20px 60px rgba(0,0,0,.15);
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

/* ── Layout ── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  cursor: pointer;
  transition: all .15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(37,99,235,.35);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(37,99,235,.45); }

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,.3);
}
.btn-outline:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.5); }

.btn-large { padding: 16px 32px; font-size: 1.0625rem; border-radius: 10px; }

/* ── Lang toggle ── */
.lang-toggle {
  display: flex;
  gap: 4px;
}

.lang-btn {
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,.2);
  background: transparent;
  color: rgba(255,255,255,.45);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: .05em;
  transition: all .15s;
}
.lang-btn.active {
  background: rgba(255,255,255,.12);
  color: #fff;
  border-color: rgba(255,255,255,.35);
}
.lang-btn:hover:not(.active) {
  color: rgba(255,255,255,.75);
  border-color: rgba(255,255,255,.3);
}

/* ── Nav ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15,23,42,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  font-weight: 700;
  font-size: 1.0625rem;
  text-decoration: none;
}
.nav-logo img { border-radius: 6px; }

/* ── Hero ── */
.hero {
  background: var(--dark);
  color: var(--white);
  padding: 80px 0 100px;
  overflow: hidden;
  position: relative;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(37,99,235,.2);
  color: #93c5fd;
  border: 1px solid rgba(37,99,235,.4);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  margin-bottom: 20px;
  letter-spacing: .01em;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--white);
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.125rem;
  color: #94a3b8;
  line-height: 1.65;
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.hero-note {
  font-size: 0.8125rem;
  color: #64748b;
}

.scroll-arrow {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: #334155;
  text-decoration: none;
  animation: bounce 2s ease-in-out infinite;
}
.scroll-arrow svg { display: block; }

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}

/* Browser mockup */
.browser-frame {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,.5), 0 0 0 1px rgba(255,255,255,.06);
  background: #fff;
}

.browser-bar {
  height: 36px;
  background: #e8e8e8;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
}

.browser-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #c6c6c6;
}
.browser-dot:nth-child(1) { background: #ff5f57; }
.browser-dot:nth-child(2) { background: #febc2e; }
.browser-dot:nth-child(3) { background: #28c840; }

.browser-url {
  margin-left: 12px;
  background: #f5f5f5;
  border-radius: 4px;
  padding: 3px 10px;
  font-size: 0.75rem;
  color: #666;
  flex: 1;
  max-width: 180px;
}

.browser-frame img { display: block; width: 100%; }
.browser-frame video { display: block; width: 100%; object-fit: cover; object-position: center 25%; }

/* ── Boards strip ── */
.boards {
  background: var(--light);
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
}

.boards-label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.boards-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.board-chip {
  padding: 6px 14px;
  border-radius: 100px;
  background: var(--white);
  border: 1.5px solid var(--border);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--dark-3);
}

.board-chip--more {
  background: transparent;
  border-color: transparent;
  color: var(--text-muted);
  font-style: italic;
}

/* ── Features ── */
.features {
  padding: 100px 0;
  background: var(--white);
}

.features h2, .screenshots h2, .cta-final h2 {
  font-size: clamp(1.625rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--dark);
  text-align: center;
  margin-bottom: 56px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 32px 28px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  transition: box-shadow .2s, transform .2s;
}
.feature-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(37,99,235,.1), rgba(124,58,237,.1));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Screenshots ── */
.screenshots {
  padding: 100px 0;
  background: var(--light);
}

.screenshot-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 80px;
}
.screenshot-row:last-child { margin-bottom: 0; }
.screenshot-row--reverse { direction: rtl; }
.screenshot-row--reverse > * { direction: ltr; }

.screenshot-text h3 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 14px;
  letter-spacing: -.01em;
}

.screenshot-text p {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}

.screenshot-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.screenshot-list li {
  font-size: 0.9375rem;
  color: var(--text);
  padding-left: 22px;
  position: relative;
}
.screenshot-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

.screenshot-img img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  display: block;
}

/* ── Privacy ── */
.privacy {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
  color: var(--white);
}

.privacy-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 40px;
  align-items: center;
}

.privacy-icon {
  color: #60a5fa;
  flex-shrink: 0;
}

.privacy-text h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
  letter-spacing: -.01em;
}

.privacy-text p {
  font-size: 0.9375rem;
  color: #94a3b8;
  line-height: 1.65;
}

.privacy-text code {
  background: rgba(255,255,255,.1);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.875em;
  font-family: 'SF Mono', 'Fira Code', monospace;
}

.privacy-stats {
  display: flex;
  gap: 32px;
  flex-shrink: 0;
}

.privacy-stat { text-align: center; }

.stat-value {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -.02em;
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: .05em;
  font-weight: 500;
}

/* ── Plans ── */
.plans {
  padding: 100px 0;
  background: var(--light-2);
}

.plans-header {
  text-align: center;
  margin-bottom: 56px;
}

.plans-header h2 {
  font-size: clamp(1.625rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--dark);
  margin-bottom: 12px;
}

.plans-sub {
  font-size: 1.0625rem;
  color: var(--text-muted);
}

.plans-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 780px;
  margin: 0 auto;
}

.plan-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.plan-card--pro {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow-lg);
  position: relative;
  background: linear-gradient(160deg, #faf5ff 0%, var(--white) 60%);
}

.plan-pro-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent), var(--primary));
  color: var(--white);
  padding: 3px 16px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  white-space: nowrap;
}

.plan-tier {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--dark);
}

.plan-price-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.plan-price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -.02em;
}

.plan-period {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.plan-features li {
  font-size: 0.9375rem;
  color: var(--text);
  padding-left: 22px;
  position: relative;
}
.plan-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

.plan-features-inherited {
  color: var(--text-muted);
  font-size: 0.875rem;
}
.plan-features-inherited::before { background: var(--border) !important; }

.btn-plan-free {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  cursor: pointer;
  transition: all .15s ease;
  background: transparent;
  color: var(--dark);
  border: 1.5px solid var(--border);
}
.btn-plan-free:hover { background: var(--light); border-color: var(--dark-3); }

.plan-activate {
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  letter-spacing: .01em;
}

/* ── Install buttons (Chrome + Firefox pair) ── */
.install-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn-firefox {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  cursor: pointer;
  transition: all .15s ease;
  background: rgba(255,102,17,.12);
  color: #ff6611;
  border: 1.5px solid rgba(255,102,17,.35);
}
.btn-firefox:hover { background: rgba(255,102,17,.2); border-color: #ff6611; transform: translateY(-1px); }

.btn-firefox-dark {
  background: rgba(255,255,255,.06);
  color: #fb923c;
  border: 1.5px solid rgba(255,255,255,.15);
}
.btn-firefox-dark:hover { background: rgba(255,102,17,.2); border-color: rgba(255,102,17,.5); transform: translateY(-1px); }

/* ── CTA Final ── */
.cta-final {
  padding: 100px 0;
  background: var(--dark);
  text-align: center;
}

.cta-final h2 { color: var(--white); margin-bottom: 12px; }

.cta-final > .container > p {
  font-size: 1.125rem;
  color: #94a3b8;
  margin-bottom: 36px;
}

.cta-compat {
  font-size: 0.8125rem;
  color: #475569;
  margin-top: 16px;
  margin-bottom: 0;
}

/* ── Footer ── */
.footer {
  background: #080d18;
  padding: 32px 0;
  border-top: 1px solid rgba(255,255,255,.05);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #94a3b8;
  font-weight: 600;
  font-size: 0.9375rem;
}
.footer-logo img { border-radius: 4px; opacity: .8; }

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: #64748b;
  text-decoration: none;
  font-size: 0.875rem;
  transition: color .15s;
}
.footer-links a:hover { color: #94a3b8; }

.footer-copy {
  color: #334155;
  font-size: 0.8125rem;
  width: 100%;
  text-align: center;
  padding-top: 8px;
  border-top: 1px solid rgba(255,255,255,.04);
  margin-top: 8px;
}

.footer-copy--copy {
  border-top: none;
  padding-top: 4px;
  margin-top: 0;
}

.footer-copy--copy a {
  color: #475569;
  text-decoration: none;
  transition: color .15s;
}
.footer-copy--copy a:hover { color: #94a3b8; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }
  .hero-sub { max-width: none; margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }

  .features-grid { grid-template-columns: 1fr; gap: 16px; }

  .screenshot-row, .screenshot-row--reverse {
    grid-template-columns: 1fr;
    direction: ltr;
    gap: 32px;
  }

  .privacy-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .privacy-icon { margin: 0 auto; }
  .privacy-stats { justify-content: center; }

  .footer-inner { justify-content: center; text-align: center; }
  .footer-logo { justify-content: center; }
  .footer-links { justify-content: center; }

  .plans-grid { grid-template-columns: 1fr; max-width: 420px; }
  .install-buttons { justify-content: center; }
}

@media (max-width: 600px) {
  .hero { padding: 60px 0 72px; }
  .features, .screenshots, .cta-final, .plans { padding: 72px 0; }
  .privacy { padding: 60px 0; }
  .btn-large { width: 100%; justify-content: center; }
  .privacy-stats { flex-direction: column; gap: 20px; }
  .install-buttons { flex-direction: column; }
  .install-buttons .btn, .install-buttons .btn-firefox { justify-content: center; }
}