/* =========================================================================
   Brain Clarity Website — Shared Styles
   ========================================================================= */

/* -- Reset --------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
img, svg { display: block; max-width: 100%; height: auto; }
button { font: inherit; cursor: pointer; border: none; background: none; }

/* -- Design Tokens ------------------------------------------------------- */
:root {
  /* Colors — Brain Clarity palette */
  --bg-primary: #0a0e1a;          /* Deep ink background */
  --bg-secondary: #111827;        /* Cards, sections */
  --bg-tertiary: #1f2937;         /* Elevated elements */
  --bg-light: #f9fafb;            /* Light sections */
  --bg-light-alt: #ffffff;        /* Pure white for legal pages */

  --text-primary: #f9fafb;        /* Main text on dark */
  --text-secondary: #d1d5db;      /* Subdued text on dark */
  --text-muted: #9ca3af;          /* Captions on dark */
  --text-dark: #111827;           /* Main text on light */
  --text-dark-secondary: #4b5563; /* Subdued text on light */

  --accent: #8b5cf6;              /* Primary purple — energy */
  --accent-soft: #a78bfa;
  --accent-glow: rgba(139, 92, 246, 0.25);

  --success: #10b981;
  --warning: #f59e0b;
  --border-dark: #374151;
  --border-light: #e5e7eb;

  /* Type */
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco,
    Consolas, monospace;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;

  /* Layout */
  --content-max: 1120px;
  --content-narrow: 760px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px var(--accent-glow);
}

/* -- Base ---------------------------------------------------------------- */
body {
  font-family: var(--font-system);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.container-narrow {
  width: 100%;
  max-width: var(--content-narrow);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

/* -- Navigation --------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-dark);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-5);
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}
.nav__logo {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-soft));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  color: #fff;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  list-style: none;
}
.nav__link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s;
}
.nav__link:hover { color: var(--text-primary); }
.nav__lang {
  display: flex;
  gap: var(--space-2);
  margin-left: var(--space-5);
  padding-left: var(--space-5);
  border-left: 1px solid var(--border-dark);
}
.nav__lang a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 4px 8px;
  border-radius: 4px;
  transition: all 0.2s;
}
.nav__lang a.is-active {
  color: var(--accent-soft);
  background: rgba(139, 92, 246, 0.1);
}
.nav__lang a:hover { color: var(--text-primary); }

/* -- Hero --------------------------------------------------------------- */
.hero {
  position: relative;
  padding: var(--space-9) 0 var(--space-9);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
  pointer-events: none;
}
.hero__content {
  position: relative;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}
.hero__eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-soft);
  margin-bottom: var(--space-5);
  padding: 6px 14px;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: 999px;
}
.hero__title {
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 800;
  margin-bottom: var(--space-5);
  background: linear-gradient(180deg, #fff 0%, #d1d5db 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero__subtitle {
  font-size: clamp(18px, 2.5vw, 22px);
  line-height: 1.5;
  color: var(--text-secondary);
  margin-bottom: var(--space-7);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
  align-items: center;
}

/* -- Buttons ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  white-space: nowrap;
}
.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-md), var(--shadow-glow);
}
.btn--primary:hover {
  background: var(--accent-soft);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}
.btn--secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-dark);
}
.btn--secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--accent);
}
.btn--store {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: 12px 22px;
  background: #000;
  color: #fff;
  border-radius: 10px;
  border: 1px solid #1f2937;
  font-weight: 500;
  text-decoration: none;
  font-size: 14px;
}
.btn--store:hover { border-color: var(--accent); }
.btn--store__icon { font-size: 22px; line-height: 1; }
.btn--store__label { display: flex; flex-direction: column; align-items: flex-start; line-height: 1.1; gap: 2px; }
.btn--store__hint { font-size: 10px; opacity: 0.7; }
.btn--store__store { font-size: 16px; font-weight: 600; }

/* -- Section base ------------------------------------------------------- */
.section {
  padding: var(--space-9) 0;
}
.section--light {
  background: var(--bg-light);
  color: var(--text-dark);
}
.section--light h2, .section--light h3 { color: var(--text-dark); }
.section--light p { color: var(--text-dark-secondary); }
.section__title {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--space-5);
}
.section__subtitle {
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-secondary);
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-8);
}
.section--light .section__subtitle { color: var(--text-dark-secondary); }

/* -- Feature Grid ------------------------------------------------------- */
.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-7);
}
.game-card {
  padding: var(--space-5);
  background: var(--bg-secondary);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  transition: all 0.2s;
}
.game-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.game-card__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.game-card__desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* -- Domains list (Brain Profile) -------------------------------------- */
.domains {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-7);
}
.domain {
  padding: var(--space-4);
  background: var(--bg-secondary);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  text-align: center;
}

/* -- Pricing ------------------------------------------------------------ */
.pricing {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-7);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.plan {
  position: relative;
  padding: var(--space-7) var(--space-5);
  background: var(--bg-secondary);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
}
.plan--featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, var(--bg-secondary), rgba(139, 92, 246, 0.05));
  box-shadow: var(--shadow-glow);
}
.plan__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.plan__name {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}
.plan__price {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}
.plan__price small { font-size: 18px; font-weight: 500; color: var(--text-muted); }
.plan__trial {
  font-size: 14px;
  color: var(--accent-soft);
  margin-bottom: var(--space-5);
  font-weight: 500;
}
.plan__features {
  list-style: none;
  margin-top: var(--space-5);
  padding: 0;
}
.plan__features li {
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--border-dark);
  font-size: 15px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.plan__features li::before {
  content: '✓';
  color: var(--accent-soft);
  font-weight: 700;
}
.plan__features li:last-child { border-bottom: none; }

/* -- FAQ ---------------------------------------------------------------- */
.faq {
  max-width: 720px;
  margin: 0 auto;
}
.faq__item {
  border-bottom: 1px solid var(--border-light);
  padding: var(--space-5) 0;
}
.faq__item:first-child { padding-top: var(--space-4); }
.faq__question {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--text-dark);
}
.faq__answer {
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-dark-secondary);
}

/* -- Footer ------------------------------------------------------------- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-dark);
  padding: var(--space-8) 0 var(--space-6);
  margin-top: var(--space-9);
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}
.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  font-weight: 700;
  font-size: 18px;
}
.footer__tagline {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}
.footer__col-title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}
.footer__links { list-style: none; }
.footer__links li { margin-bottom: var(--space-2); }
.footer__links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}
.footer__links a:hover { color: var(--text-primary); }
.footer__bottom {
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: 13px;
  color: var(--text-muted);
}

/* -- Legal / Long-form Content ----------------------------------------- */
.legal {
  background: var(--bg-light-alt);
  color: var(--text-dark);
  min-height: 100vh;
}
.legal__container {
  max-width: var(--content-narrow);
  margin: 0 auto;
  padding: var(--space-8) var(--space-5) var(--space-9);
}
.legal h1 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: var(--space-2);
}
.legal__subtitle {
  font-size: 17px;
  color: var(--text-dark-secondary);
  margin-bottom: var(--space-7);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--border-light);
}
.legal h2 {
  font-size: 22px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  font-weight: 700;
  margin: var(--space-7) 0 var(--space-4);
  color: var(--text-dark);
}
.legal h3 {
  font-size: 17px;
  font-weight: 600;
  margin: var(--space-5) 0 var(--space-3);
  color: var(--text-dark);
}
.legal p {
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: var(--space-4);
  color: var(--text-dark-secondary);
}
.legal ul { padding-left: var(--space-5); margin-bottom: var(--space-4); }
.legal li { margin-bottom: var(--space-2); color: var(--text-dark-secondary); }
.legal li::marker { color: #9ca3af; }
.legal strong { color: var(--text-dark); font-weight: 600; }
.legal code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-light);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--text-dark);
}
.legal a { color: var(--accent); text-decoration: underline; }
.legal a:hover { color: var(--accent-soft); }
.legal__address {
  background: var(--bg-light);
  border-left: 3px solid var(--border-light);
  padding: var(--space-4) var(--space-5);
  margin: var(--space-3) 0 var(--space-5);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.legal__address p { margin: 0; line-height: 1.7; }
.legal__note {
  background: #fef3c7;
  border-left: 3px solid #f59e0b;
  padding: var(--space-4) var(--space-5);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-top: var(--space-7);
  font-size: 14px;
  color: #78350f;
}
.legal__note strong { color: #78350f; }
.legal__updated {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-light);
  font-size: 14px;
  color: var(--text-muted);
}

/* -- Responsive Adjustments -------------------------------------------- */
@media (max-width: 768px) {
  .nav__inner { height: 56px; }
  .nav__links { gap: var(--space-3); }
  .nav__lang { margin-left: var(--space-3); padding-left: var(--space-3); }
  .hero { padding: var(--space-7) 0; }
  .section { padding: var(--space-8) 0; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--space-5); }
  .footer__bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .nav__links li.nav__link-extra { display: none; }
  .footer__grid { grid-template-columns: 1fr; }
}

/* -- Print -------------------------------------------------------------- */
@media print {
  .nav, .footer, .hero__cta { display: none; }
  body { background: #fff; color: #000; }
  .legal { background: #fff; }
}