/* Reset & base - Financial industry dark theme (matches BitFree app) */
*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --bf-bg: #0a0a0a;
  --bf-bg-elevated: #141414;
  --bf-bg-card: #1a1a1a;
  --bf-bg-container: #1e1e1e;
  --bf-border: rgba(255, 255, 255, 0.08);
  --bf-border-subtle: rgba(255, 255, 255, 0.05);
  --bf-text: #ffffff;
  --bf-text-secondary: #a1a1aa;
  --bf-text-muted: #71717a;
  --bf-accent-green: #22c55e;
  --bf-accent-cta: #475569;
  --bf-accent-cta-hover: #64748b;
}

html {
  font-size: 18px;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  color: var(--bf-text);
  background: var(--bf-bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font: inherit;
}

/* Layout helpers */
.bf-container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.bf-section {
  padding: 80px 0;
  background: var(--bf-bg);
  color: var(--bf-text-secondary);
}

.bf-section-alt {
  background: var(--bf-bg-elevated);
}

.bf-section-reviewers {
  background: var(--bf-bg-elevated);
  border-top: 1px solid var(--bf-border);
  border-bottom: 1px solid var(--bf-border);
}
.bf-review-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}
.bf-review-card {
  padding: 16px 18px;
  border-radius: 14px;
  background: var(--bf-bg-container);
  border: 1px solid var(--bf-border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}
.bf-review-card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--bf-accent-green);
}
.bf-review-card p {
  margin: 0;
  font-size: 1rem;
  color: var(--bf-text-secondary);
  line-height: 1.5;
}
.bf-guideline-note {
  margin-top: 28px;
  padding: 18px 20px;
  border-radius: 14px;
  background: rgba(51, 65, 85, 0.2);
  border: 1px solid rgba(71, 85, 105, 0.4);
}
.bf-guideline-note p {
  margin: 0;
  font-size: 1rem;
  color: var(--bf-text-secondary);
  line-height: 1.6;
}

.bf-two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
  align-items: flex-start;
}

.bf-center {
  text-align: center;
}

.bf-section-intro {
  max-width: 640px;
  margin: 12px auto 40px;
  font-size: 1.1rem;
  color: var(--bf-text-secondary);
  line-height: 1.6;
}

/* Top disclaimer banner - prominent for reviewers */
.bf-disclaimer-banner {
  background: var(--bf-bg-container);
  color: var(--bf-text-secondary);
  padding: 14px 0;
  font-size: 1rem;
  text-align: center;
  border-bottom: 1px solid var(--bf-border);
}
.bf-disclaimer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 4px 6px;
}
.bf-disclaimer-banner strong {
  color: var(--bf-text);
}

/* Header */
.bf-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(10, 10, 10, 0.92);
  border-bottom: 1px solid var(--bf-border);
}

.bf-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
}

.bf-logo {
  display: inline-flex;
  align-items: center;
  color: var(--bf-text);
}

.bf-logo-img {
  height: 56px;
  width: auto;
  display: block;
  object-fit: contain;
}

.bf-nav {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 1rem;
}

.bf-nav-link {
  color: var(--bf-text-secondary);
  padding: 8px 10px;
  border-radius: 999px;
  transition: color 0.16s ease, background-color 0.16s ease;
}

.bf-nav-link:hover {
  color: var(--bf-text);
  background: var(--bf-bg-container);
}

.bf-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.bf-lang-toggle {
  border-radius: 999px;
  border: 1px solid var(--bf-border);
  background: var(--bf-bg-container);
  color: var(--bf-text);
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
}

.bf-lang-toggle:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

/* Buttons - Primary CTA uses purple/blue (matches app Top Up button) */
.bf-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: none;
  background: var(--bf-accent-cta);
  color: #fff;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.12s ease, background 0.12s ease,
    box-shadow 0.12s ease;
}

.bf-button:hover {
  transform: translateY(-1px);
  background: var(--bf-accent-cta-hover);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
}

.bf-button-sm {
  padding: 8px 14px;
  font-size: 13px;
}

.bf-button-ghost {
  background: transparent;
  color: var(--bf-text);
  border: 1px solid var(--bf-border);
  box-shadow: none;
}

.bf-button-ghost:hover {
  background: var(--bf-bg-container);
  border-color: rgba(255, 255, 255, 0.15);
}

.bf-store-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 999px;
  border: none;
  background: var(--bf-accent-cta);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: background 0.15s ease, transform 0.15s ease,
    box-shadow 0.15s ease;
}

.bf-store-button:hover {
  background: var(--bf-accent-cta-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
}

.bf-store-icon {
  width: 26px;
  height: 26px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #fff;
}

.bf-store-text {
  display: flex;
  flex-direction: column;
  font-size: 0.7rem;
  line-height: 1.2;
}

.bf-store-text span:last-child {
  font-size: 1rem;
  font-weight: 600;
}

/* Hero */
.bf-hero {
  padding-top: 96px;
}

.bf-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}

.bf-hero-copy h1 {
  margin: 10px 0 16px;
  font-size: 2.2rem;
  line-height: 1.2;
  color: var(--bf-text);
  letter-spacing: -0.03em;
}

.bf-hero-subtitle {
  margin: 0 0 24px;
  color: var(--bf-text-secondary);
  font-size: 1.1rem;
  line-height: 1.6;
}

.bf-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(34, 197, 94, 0.4);
  background: var(--bf-bg-container);
  color: var(--bf-accent-green);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.bf-hero-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.bf-store-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.bf-store-button-google .bf-store-icon-google {
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bf-availability {
  font-size: 0.95rem;
  color: var(--bf-text-muted);
}

.bf-hero-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.bf-card-mock {
  position: relative;
  width: 100%;
  max-width: 340px;
  aspect-ratio: 1.6 / 1;
  border-radius: 20px;
  padding: 20px 22px;
  background: linear-gradient(135deg, #1a1a1a 0%, #0f0f0f 100%);
  border: 1px solid var(--bf-border);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
  color: var(--bf-text);
  overflow: hidden;
}

.bf-card-mock::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(180deg, rgba(34, 197, 94, 0.15) 0%, transparent 100%);
  pointer-events: none;
}

.bf-card-top {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.bf-card-brand {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.bf-card-type {
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(34, 197, 94, 0.4);
  background: rgba(34, 197, 94, 0.15);
  color: var(--bf-accent-green);
}

.bf-card-number {
  position: relative;
  font-family: "SF Mono", ui-monospace, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
  letter-spacing: 0.25em;
  font-size: 18px;
  margin-bottom: 26px;
}

.bf-card-footer {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.bf-card-caption {
  font-size: 1rem;
  color: var(--bf-text-muted);
  text-align: center;
  max-width: 340px;
}

/* Lists & cards */
.bf-list {
  padding-left: 0;
  margin: 12px 0 0;
  list-style: none;
  color: var(--bf-text-secondary);
  font-size: 1.05rem;
}

.bf-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
}

.bf-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--bf-accent-green);
}

.bf-list-warning li::before {
  background: #f97316;
}

.bf-list-compact li {
  margin-bottom: 4px;
}

.bf-card {
  padding: 18px 18px 16px;
  border-radius: 16px;
  background: var(--bf-bg-container);
  color: var(--bf-text-secondary);
}

.bf-card-outline {
  border: 1px solid var(--bf-border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.bf-card h3 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 1.15rem;
  color: var(--bf-text);
}

.bf-card-note {
  margin-top: 12px;
  font-size: 1rem;
  color: var(--bf-text-muted);
}

.bf-small {
  font-size: 1rem;
  color: var(--bf-text-muted);
}

/* Steps */
.bf-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.bf-step {
  border-radius: 16px;
  padding: 16px 14px 14px;
  background: var(--bf-bg-container);
  border: 1px solid var(--bf-border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.bf-step-number {
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: var(--bf-accent-cta);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 10px;
}

.bf-step h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--bf-text);
}

.bf-step p {
  margin: 0;
  font-size: 1rem;
  color: var(--bf-text-secondary);
}

/* FAQ */
.bf-faq-list {
  max-width: 720px;
  margin: 24px auto 0;
}

.bf-faq-item {
  border-radius: 14px;
  border: 1px solid var(--bf-border);
  background: var(--bf-bg-container);
  margin-bottom: 10px;
  overflow: hidden;
}

.bf-faq-question {
  width: 100%;
  padding: 12px 16px;
  background: transparent;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--bf-text);
  cursor: pointer;
  text-align: left;
}

.bf-faq-question span:first-child {
  font-size: 1.05rem;
}

.bf-faq-icon {
  margin-left: 12px;
  font-size: 1.25rem;
  color: var(--bf-text-muted);
}

.bf-faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 16px;
  transition: max-height 0.2s ease, padding-bottom 0.2s ease;
}

.bf-faq-answer p {
  margin: 0 0 14px;
  font-size: 1rem;
  color: var(--bf-text-secondary);
}

.bf-faq-item.is-open .bf-faq-answer {
  max-height: 400px;
  padding-bottom: 12px;
}

.bf-faq-item.is-open .bf-faq-icon {
  transform: rotate(45deg);
}

/* Contact & footer */
.bf-footer {
  border-top: 1px solid var(--bf-border);
  background: var(--bf-bg);
  color: var(--bf-text-muted);
  padding: 18px 0;
}

.bf-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 1rem;
}

.bf-footer-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.bf-footer-logo {
  font-weight: 600;
  color: var(--bf-text);
}

.bf-footer-links {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.bf-footer-link {
  color: var(--bf-text-secondary);
}

.bf-footer-link:hover {
  color: var(--bf-text);
}

.bf-footer-disclaimer {
  color: var(--bf-text-muted);
}

/* Legal pages (Terms, Privacy) */
.bf-legal-page {
  padding-top: 48px;
  padding-bottom: 64px;
}
.bf-legal-page h1 {
  font-size: 1.75rem;
  margin: 0 0 10px;
  color: var(--bf-text);
}
.bf-legal-updated {
  font-size: 1rem;
  color: var(--bf-text-muted);
  margin: 0 0 32px;
}
.bf-legal-page section {
  margin-bottom: 28px;
}
.bf-legal-page h2 {
  font-size: 1.2rem;
  margin: 0 0 12px;
  color: var(--bf-text);
}
.bf-legal-page p,
.bf-legal-page li {
  font-size: 1.05rem;
  color: var(--bf-text-secondary);
  line-height: 1.65;
  margin: 0 0 10px;
}
.bf-legal-page ul {
  margin: 8px 0 14px;
  padding-left: 22px;
}
.bf-legal-page a {
  color: var(--bf-accent-cta);
  text-decoration: underline;
}
.bf-legal-page a:hover {
  color: var(--bf-accent-cta-hover);
}
.bf-legal-footer {
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--bf-border);
  font-size: 1rem;
  color: var(--bf-text-muted);
}

/* Typography */
h1,
h2,
h3 {
  font-weight: 600;
}

h2 {
  font-size: 1.5rem;
  margin: 0 0 14px;
  color: var(--bf-text);
}

h3 {
  font-size: 1.2rem;
  color: var(--bf-text);
}

p {
  line-height: 1.6;
}

/* Responsive */
@media (max-width: 960px) {
  .bf-header-inner {
    gap: 10px;
  }

  .bf-nav {
    display: none;
  }

  .bf-hero-inner {
    grid-template-columns: 1fr;
  }

  .bf-hero-copy {
    text-align: left;
  }

  .bf-hero {
    padding-top: 80px;
  }

  .bf-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .bf-two-column {
    grid-template-columns: 1fr;
  }

  .bf-review-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .bf-section {
    padding: 56px 0;
  }

  .bf-hero-inner {
    gap: 36px;
  }

  .bf-hero-copy h1 {
    font-size: 1.75rem;
  }

  .bf-badge {
    font-size: 10px;
  }

  .bf-steps {
    grid-template-columns: 1fr;
  }

  .bf-review-grid {
    grid-template-columns: 1fr;
  }

  .bf-disclaimer-banner {
    font-size: 0.95rem;
    padding: 14px 0;
  }

  .bf-footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}