/* =============================================
   BK666 Review — Premium Dark Affiliate Theme
   ============================================= */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-black: #000000;
  --bg-charcoal: #0d0d0d;
  --bg-card: #141414;
  --bg-card-hover: #1a1a1a;
  --gold: #FFCC00;
  --gold-dark: #e6b800;
  --gold-glow: rgba(255, 204, 0, 0.25);
  --text-primary: #f5f5f5;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --border: #222222;
  --border-gold: rgba(255, 204, 0, 0.35);
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.6);
  --transition: 0.25s ease;
  --max-width: 1140px;
  --header-height: 64px;
  --sticky-cta-height: 76px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  background-color: var(--bg-black);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: var(--sticky-cta-height);
}

a {
  color: var(--gold);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--text-primary);
}

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

/* ---- Header ---- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--header-height);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.site-brand:hover {
  color: var(--text-primary);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle span {
  position: relative;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle span::before { top: -7px; }
.nav-toggle span::after  { top: 7px; }

.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after  { top: 0; transform: rotate(-45deg); }

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 0.25rem;
}

.main-nav a {
  display: block;
  padding: 0.5rem 0.85rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--gold);
  background: rgba(255, 204, 0, 0.08);
}

/* ---- Main Content ---- */

main {
  flex: 1;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 3.5rem 0;
}

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

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--border-gold);
}

.section-subtitle {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gold);
  margin: 1.75rem 0 0.75rem;
}

.section p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.section p:last-child {
  margin-bottom: 0;
}

/* ---- Hero ---- */

.hero {
  background: linear-gradient(180deg, var(--bg-charcoal) 0%, var(--bg-black) 100%);
  padding: 4rem 0 3.5rem;
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.hero h1 span {
  color: var(--gold);
}

.hero-summary {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 2rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* ---- Buttons ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}

.btn-primary {
  background: var(--gold);
  color: var(--bg-black);
  border-color: var(--gold);
}

.btn-primary:hover {
  background: var(--gold-dark);
  border-color: var(--gold-dark);
  color: var(--bg-black);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--gold-glow);
}

.btn-outline {
  background: transparent;
  color: var(--gold);
  border-color: var(--gold);
}

.btn-outline:hover {
  background: rgba(255, 204, 0, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--gold-glow);
}

/* ---- Comparison Table ---- */

.comparison-wrapper {
  margin: 2rem 0;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-gold);
  overflow: hidden;
  background: var(--bg-card);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 204, 0, 0.06);
}

.comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.comparison-table caption {
  caption-side: top;
  padding: 0.85rem 1.25rem;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gold);
  background: rgba(255, 204, 0, 0.06);
  border-bottom: 1px solid var(--border-gold);
  text-align: left;
}

.comparison-table thead {
  background: linear-gradient(180deg, #1a1a1a 0%, var(--bg-card) 100%);
}

.comparison-table th {
  padding: 1rem 1.25rem;
  text-align: left;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gold);
  border-bottom: 2px solid var(--border-gold);
  border-right: 1px solid var(--border);
}

.comparison-table th:last-child {
  border-right: none;
}

.comparison-table td {
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  color: var(--text-secondary);
  background: var(--bg-charcoal);
  vertical-align: middle;
}

.comparison-table td:last-child {
  border-right: none;
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.comparison-table tbody tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.025);
}

.comparison-table tbody tr:nth-child(even) td.highlight {
  background: rgba(255, 204, 0, 0.04);
}

.comparison-table tbody tr:hover td {
  background: var(--bg-card-hover);
}

.comparison-table tbody tr:hover td.highlight {
  background: rgba(255, 204, 0, 0.08);
}

.comparison-table .highlight {
  color: var(--text-primary);
  font-weight: 600;
  background: rgba(255, 204, 0, 0.03);
  border-right: 1px solid var(--border-gold);
  width: 38%;
}

.comparison-table .cell-value {
  color: var(--text-primary);
  font-weight: 500;
}

/* ---- Badges ---- */

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.badge {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: rgba(255, 204, 0, 0.12);
  color: var(--gold);
  border: 1px solid var(--border-gold);
  border-radius: 999px;
}

/* ---- Pros & Cons Grid ---- */

.pros-cons-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.pros-cons-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.pros-cons-card h3 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  color: var(--gold);
}

.pros-cons-card ul {
  list-style: none;
}

.pros-cons-card li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.6rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.pros-cons-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
}

/* ---- FAQ Accordion ---- */

.faq-list {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-item:hover {
  border-color: var(--border-gold);
}

.faq-item[open] {
  border-color: var(--border-gold);
  box-shadow: 0 4px 16px rgba(255, 204, 0, 0.08);
}

.faq-question {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--gold);
  user-select: none;
  transition: background var(--transition);
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: "";
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(45deg);
  transition: transform var(--transition);
  margin-top: -4px;
}

.faq-item[open] .faq-question {
  background: rgba(255, 204, 0, 0.06);
  border-bottom: 1px solid var(--border);
}

.faq-item[open] .faq-question::after {
  transform: rotate(-135deg);
  margin-top: 4px;
}

.faq-answer {
  padding: 0 1.5rem 1.25rem;
}

.faq-answer p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq-answer a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.faq-answer a:hover {
  color: var(--text-primary);
}

/* ---- Page Header (inner pages) ---- */

.page-header {
  background: var(--bg-charcoal);
  padding: 3rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.page-header h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.1rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.page-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ---- Steps List ---- */

.steps-list {
  list-style: none;
  counter-reset: steps;
  margin: 1.5rem 0;
}

.steps-list li {
  counter-increment: steps;
  position: relative;
  padding: 1.25rem 1.25rem 1.25rem 3.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
}

.steps-list li::before {
  content: counter(steps);
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  background: var(--gold);
  color: var(--bg-black);
  font-weight: 800;
  font-size: 0.85rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---- Contact Card ---- */

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 1.5rem 0;
}

.contact-card dl {
  display: grid;
  gap: 1rem;
}

.contact-card dt {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.contact-card dd {
  color: var(--text-secondary);
  margin-left: 0;
}

.notice-box {
  background: rgba(255, 204, 0, 0.06);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.notice-box strong {
  color: var(--gold);
}

/* ---- CTA Banner ---- */

.cta-banner {
  text-align: center;
  padding: 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  margin: 2rem 0;
}

.cta-banner p {
  margin-bottom: 1.25rem;
}

/* ---- Footer ---- */

.site-footer {
  background: var(--bg-charcoal);
  border-top: 1px solid var(--border);
  padding: 2.5rem 0 1.5rem;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.footer-disclaimer {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.footer-disclaimer a {
  color: var(--gold);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.footer-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.85rem;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(255, 204, 0, 0.1);
  color: var(--gold);
  border: 1px solid var(--border-gold);
  border-radius: 999px;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
  font-size: 0.85rem;
}

.footer-links a {
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--gold);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
  width: 100%;
  text-align: center;
  margin-top: 1rem;
}

/* ---- Sticky Bottom CTA ---- */

.sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(0, 0, 0, 0.97);
  backdrop-filter: blur(14px);
  border-top: 2px solid var(--border-gold);
  padding: 0.85rem 1.25rem;
  box-shadow: 0 -6px 28px rgba(0, 0, 0, 0.85);
}

.sticky-cta-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  gap: 0.75rem;
}

.sticky-cta .btn-sticky {
  flex: 1;
  padding: 0.9rem 1rem;
  font-size: 0.88rem;
  min-height: 48px;
}

.sticky-cta .btn-outline.btn-sticky:hover {
  color: var(--gold);
}

/* ---- Responsive ---- */

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .main-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.98);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }

  .main-nav.open {
    max-height: 320px;
  }

  .main-nav ul {
    flex-direction: column;
    padding: 0.75rem 1.25rem 1rem;
  }

  .main-nav a {
    padding: 0.75rem 1rem;
  }

  .pros-cons-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 3rem 0 2.5rem;
  }

  .section {
    padding: 2.5rem 0;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .comparison-wrapper {
    border-width: 1px;
    background: transparent;
    box-shadow: none;
    overflow: visible;
  }

  .comparison-table,
  .comparison-table thead,
  .comparison-table tbody,
  .comparison-table tr,
  .comparison-table th,
  .comparison-table td {
    display: block;
    width: 100%;
  }

  .comparison-table caption {
    border: 2px solid var(--border-gold);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    margin-bottom: 0;
  }

  .comparison-table thead {
    display: none;
  }

  .comparison-table tbody tr {
    margin-bottom: 1rem;
    border: 2px solid var(--border-gold);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-card);
    box-shadow: var(--shadow);
  }

  .comparison-table tbody tr:last-child {
    margin-bottom: 0;
  }

  .comparison-table tbody td {
    border: none;
    border-bottom: 1px solid var(--border);
    padding: 0.9rem 1.15rem;
    background: var(--bg-charcoal);
  }

  .comparison-table tbody td.highlight {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border-gold);
    background: rgba(255, 204, 0, 0.08);
    color: var(--gold);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.7rem 1.15rem;
  }

  .comparison-table tbody td:last-child {
    border-bottom: none;
  }

  .comparison-table tbody tr:nth-child(even) td,
  .comparison-table tbody tr:nth-child(even) td.highlight {
    background: var(--bg-charcoal);
  }

  .comparison-table tbody tr:nth-child(even) td.highlight {
    background: rgba(255, 204, 0, 0.08);
  }

  .comparison-table tbody tr:hover td,
  .comparison-table tbody tr:hover td.highlight {
    background: var(--bg-charcoal);
  }

  .sticky-cta {
    padding: 0.75rem 1rem;
  }

  .sticky-cta .btn-sticky {
    font-size: 0.82rem;
    padding: 0.85rem 0.75rem;
  }
}