/*
  Banxtel Landing - Custom Styles
  - Mobile-first
  - CSS variables
  - Flexbox/Grid layouts
*/

:root {
  --color-primary: #1976d2;
  --color-secondary: #64748b;
  --color-background: #f8fafc;
  --color-white: #ffffff;
  --color-text: #1e293b;
  --color-accent-green: #10b981;
  --color-accent-purple: #8b5cf6;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 20px rgba(2, 6, 23, 0.08);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 9999px;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  --container-max: 1200px;
  --container-pad: 1rem;

  --font-sans: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, 'Helvetica Neue', Arial, 'Apple Color Emoji', 'Segoe UI Emoji';
}

/* Breakpoints */
@media (min-width: 640px) {
  :root {
    --container-pad: 1.25rem;
  }
}

@media (min-width: 768px) {
  :root {
    --container-pad: 1.5rem;
  }
}

/* Reset & Base */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: var(--container-max);
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
  margin-left: auto;
  margin-right: auto;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 8px 12px;
  z-index: 100;
}
.skip-link:focus { top: 0; }

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.2; margin: 0 0 var(--spacing-sm); font-weight: 700; }
p { margin: 0 0 var(--spacing-sm); color: var(--color-secondary); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  z-index: 50;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-text);
}
.brand:hover { text-decoration: none; }

.nav__links {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__link {
  color: var(--color-text);
  font-weight: 600;
}
.nav__link:hover { color: var(--color-primary); text-decoration: none; }

/* Hero */
.hero {
  background: linear-gradient(180deg, var(--color-background), #ffffff);
}

.hero__content {
  min-height: calc(100vh - 64px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: var(--radius-lg);
  background: rgba(25, 118, 210, 0.08);
  color: var(--color-primary);
  font-weight: 600;
}
.badge__icon { color: var(--color-primary); }

.hero__title {
  margin-top: var(--spacing-lg);
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.02em;
}
.hero__title--accent { color: var(--color-primary); display: block; }

.hero__subtitle {
  margin-top: var(--spacing-md);
  font-size: 1.125rem;
  max-width: 60ch;
}

.hero__actions { margin-top: var(--spacing-lg); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 18px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 120ms ease, box-shadow 200ms ease, background 200ms ease;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}
.btn--primary:hover { transform: translateY(-1px); text-decoration: none; }
.btn--primary:active { transform: translateY(0); }

/* Section shared */
.section-title {
  text-align: center;
  font-size: 1.75rem;
  letter-spacing: -0.01em;
}
.section-subtitle {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
  max-width: 65ch;
}

/* Trust */
.trust { background: var(--color-background); padding: var(--spacing-2xl) 0; }
.trust__grid {
  margin-top: var(--spacing-xl);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.trust__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
}

.trust__icon {
  width: 48px;
  height: 48px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  color: var(--color-white);
}
.trust__icon--blue { background: var(--color-primary); }
.trust__icon--green { background: var(--color-accent-green); }
.trust__icon--purple { background: var(--color-accent-purple); }

.trust__heading { margin: 0; font-size: 1.125rem; }
.trust__desc { margin: 4px 0 0; max-width: 42ch; }

@media (min-width: 768px) {
  .trust__grid { grid-template-columns: repeat(3, 1fr); }
}

/* Contact */
.contact { background: var(--color-white); padding: var(--spacing-2xl) 0; }
.contact__grid {
  margin-top: var(--spacing-xl);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.card {
  background: var(--color-white);
  border: 1px solid rgba(2, 6, 23, 0.08);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--spacing-md);
}

.card__icon {
  width: 48px;
  height: 48px;
  border-radius: 999px;
  background: rgba(100, 116, 139, 0.08);
  color: var(--color-primary);
  display: grid;
  place-items: center;
}
.card__title { margin: 0 0 4px; font-size: 1rem; color: var(--color-text); }
.card__value { font-weight: 600; color: var(--color-primary); }

.contact__note {
  margin-top: var(--spacing-lg);
  text-align: center;
  color: var(--color-secondary);
}

@media (min-width: 768px) {
  .contact__grid { grid-template-columns: repeat(2, 1fr); }
}

/* Footer */
.site-footer {
  background: var(--color-text);
  color: #e2e8f0;
}
.footer__top { display: grid; gap: var(--spacing-xl); padding: var(--spacing-2xl) 0 var(--spacing-xl); grid-template-columns: 1fr; }
.footer__col { max-width: 60ch; }
.footer__brand { font-size: 1.5rem; margin: 0 0 var(--spacing-sm); color: #f8fafc; }
.footer__desc { color: #cbd5e1; }
.footer__badges { margin-top: var(--spacing-md); display: flex; gap: var(--spacing-sm); flex-wrap: wrap; }
.badge--outline { border: 1px solid #334155; color: #e2e8f0; padding: 6px 10px; border-radius: var(--radius-lg); font-weight: 600; }

.footer__heading { color: #f1f5f9; margin: 0 0 var(--spacing-sm); }
.footer__links { list-style: none; margin: 0; padding: 0; }
.footer__links a { color: #e2e8f0; }
.footer__links a:hover { color: #ffffff; text-decoration: none; }

.footer__divider { border: none; height: 1px; background: #334155; margin: 0; }

.footer__bottom { display: grid; gap: var(--spacing-sm); padding: var(--spacing-xl) 0 var(--spacing-2xl); }
.footer__copy, .footer__disclaimer, .footer__states { margin: 0; color: #cbd5e1; font-size: 0.75rem; }

@media (min-width: 768px) {
  .footer__top { grid-template-columns: 2fr 1fr; align-items: start; }
  .footer__bottom { grid-template-columns: 1fr 2fr 1fr; align-items: center; }
}

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 600ms ease, transform 600ms ease; }
.reveal.reveal--visible { opacity: 1; transform: translateY(0); }