:root {
  --bg: #f3f6fb;
  --bg-surface: #ffffff;
  --text-main: #111827;
  --text-muted: #617086;
  --card-border: rgba(15, 23, 42, 0.08);
  --soft-shadow: 0 10px 35px rgba(19, 53, 97, 0.09);
  --hero-gradient: radial-gradient(circle at 10% 20%, rgba(87, 149, 255, 0.18), transparent 38%),
                   radial-gradient(circle at 90% 10%, rgba(49, 219, 175, 0.16), transparent 33%),
                   linear-gradient(180deg, #f8fbff 0%, #eef4fb 100%);
  --brand-gradient: linear-gradient(130deg, #0a84ff 0%, #15b9d8 100%);
  --focus-ring: 0 0 0 0.2rem rgba(10, 132, 255, 0.25);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --bg-surface: #131b2b;
    --text-main: #ebf0ff;
    --text-muted: #9eacc4;
    --card-border: rgba(255, 255, 255, 0.1);
    --soft-shadow: 0 15px 45px rgba(0, 0, 0, 0.35);
    --hero-gradient: radial-gradient(circle at 10% 20%, rgba(50, 116, 229, 0.35), transparent 45%),
                     radial-gradient(circle at 90% 10%, rgba(15, 164, 182, 0.28), transparent 38%),
                     linear-gradient(180deg, #0e1626 0%, #0a111d 100%);
    --brand-gradient: linear-gradient(130deg, #2997ff 0%, #2ec7e8 100%);
    --focus-ring: 0 0 0 0.2rem rgba(41, 151, 255, 0.32);
  }

  .text-secondary {
    color: var(--text-muted) !important;
  }

  .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.2);
  }

  .navbar-toggler-icon {
    filter: invert(1);
  }
}

html,
body {
  font-family: "Manrope", sans-serif;
  background: var(--bg);
  color: var(--text-main);
}

body {
  min-height: 100vh;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1040;
  backdrop-filter: blur(8px);
  background: color-mix(in srgb, var(--bg-surface) 80%, transparent);
  border-bottom: 1px solid var(--card-border);
}

.navbar-brand,
.nav-link,
.footer-link {
  color: var(--text-main);
  text-decoration: none;
}

.nav-link:hover,
.footer-link:hover {
  color: #0a84ff;
}

.lang-select {
  border-radius: 999px;
  border: 1px solid var(--card-border);
  background-color: var(--bg-surface);
  color: var(--text-main);
}

.lang-select:focus {
  border-color: #0a84ff;
  box-shadow: var(--focus-ring);
}

.py-lg-6 {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.hero-section {
  background: var(--hero-gradient);
}

.hero-badge {
  background: rgba(10, 132, 255, 0.12);
  color: #0a84ff;
  border: 1px solid rgba(10, 132, 255, 0.2);
}

.btn-gradient {
  background: var(--brand-gradient);
  color: #fff;
  border: 0;
  box-shadow: var(--soft-shadow);
}

.btn-gradient:hover,
.btn-gradient:focus {
  color: #fff;
  transform: translateY(-1px);
}

.mockup-stack {
  position: relative;
  height: 360px;
}

.mockup-card {
  position: absolute;
  width: 44%;
  max-width: 230px;
  border-radius: 1.4rem;
  border: 1px solid var(--card-border);
  box-shadow: var(--soft-shadow);
  background: var(--bg-surface);
}

.mockup-left {
  left: 0;
  bottom: 20px;
  transform: rotate(-8deg);
}

.mockup-center {
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  z-index: 2;
}

.mockup-right {
  right: 0;
  bottom: 18px;
  transform: rotate(8deg);
}

.section-space {
  padding-top: 3.8rem;
  padding-bottom: 3.8rem;
}

.feature-card,
.step-card,
.screenshot-card,
.privacy-panel,
.policy-card {
  border-radius: 1.3rem;
  border: 1px solid var(--card-border);
  background: var(--bg-surface);
  box-shadow: var(--soft-shadow);
}

.feature-card,
.step-card {
  padding: 1.5rem;
}

.feature-icon {
  width: 2.8rem;
  height: 2.8rem;
  border-radius: 0.9rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.95rem;
  font-size: 1.3rem;
  color: #0a84ff;
  background: rgba(10, 132, 255, 0.12);
}

.step-number {
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.85rem;
  font-weight: 700;
  background: rgba(10, 132, 255, 0.12);
  color: #0a84ff;
}

.screenshot-card {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
}

.privacy-panel {
  padding: 2.2rem;
}

.footer {
  border-top: 1px solid var(--card-border);
  background: color-mix(in srgb, var(--bg-surface) 88%, transparent);
}

.policy-main {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.policy-card {
  padding: 2rem;
}

@media (max-width: 991.98px) {
  .mockup-stack {
    height: 300px;
    max-width: 440px;
    margin: 0 auto;
  }

  .mockup-card {
    width: 47%;
  }
}

@media (max-width: 575.98px) {
  .mockup-stack {
    height: 250px;
  }

  .mockup-card {
    width: 51%;
    max-width: 160px;
  }

  .feature-card,
  .step-card,
  .privacy-panel,
  .policy-card {
    border-radius: 1.05rem;
  }
}