/* BrainForge — futureati.app shared stylesheet */
/* Mobile-first, Material Design 3 inspired, no frameworks */

:root {
  --bg:           #0f0f0f;
  --bg-surface:   #1a1a1a;
  --bg-surface-2: #242424;
  --border:       #2e2e2e;
  --text-primary: #f0f0f0;
  --text-secondary: #a0a0a0;
  --accent:       #4fc3f7;
  --accent-dark:  #0288d1;
  --accent-hover: #81d4fa;
  --danger:       #ef5350;
  --success:      #66bb6a;
  --radius:       12px;
  --radius-sm:    6px;
  --font:         -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono:    'SF Mono', 'Cascadia Code', 'Fira Code', Consolas, monospace;
  --max-width:    900px;
  --header-h:     60px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ── Links ── */
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

/* ── Header / Nav ── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 15, 15, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.5px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.brand-name span {
  color: var(--accent);
}

nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

nav a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
  text-decoration: none;
}

nav a:hover,
nav a.active {
  color: var(--text-primary);
  background: var(--bg-surface-2);
  text-decoration: none;
}

/* ── Main content ── */
main {
  flex: 1;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ── Hero ── */
.hero {
  padding: 80px 20px 64px;
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(79, 195, 247, 0.12);
  border: 1px solid rgba(79, 195, 247, 0.3);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 20px;
}

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

.hero-tagline {
  font-size: clamp(1.05rem, 2.5vw, 1.3rem);
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 16px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #0a0a0a;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 12px 28px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #0a0a0a;
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  text-decoration: none;
  transition: border-color 0.15s, color 0.15s;
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.coming-soon-note {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ── Section ── */
.section {
  padding: 64px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 40px;
}

/* ── Feature grid ── */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 540px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 780px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s, background 0.2s;
}

.feature-card:hover {
  border-color: rgba(79, 195, 247, 0.4);
  background: var(--bg-surface-2);
}

.feature-icon {
  font-size: 1.6rem;
  margin-bottom: 14px;
  display: block;
}

.feature-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ── Three Laws box ── */
.three-laws {
  background: var(--bg-surface);
  border: 1px solid rgba(79, 195, 247, 0.25);
  border-radius: var(--radius);
  padding: 32px;
  margin-top: 40px;
}

.three-laws h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.law-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.law-item:last-child {
  margin-bottom: 0;
}

.law-num {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  background: rgba(79, 195, 247, 0.15);
  border: 1px solid rgba(79, 195, 247, 0.35);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
}

.law-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.law-text strong {
  color: var(--text-primary);
}

/* ── Contact strip ── */
.contact-strip {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 40px 20px;
  text-align: center;
}

.contact-strip h2 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.contact-strip p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.contact-strip a.email-link {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
}

/* ── Footer ── */
footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 28px 20px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

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

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px 16px;
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.footer-links a:hover {
  color: var(--accent);
  text-decoration: none;
}

.footer-copy {
  color: #555;
}

/* ── Content pages (privacy, terms, support) ── */
.page-hero {
  padding: 52px 20px 36px;
  max-width: var(--max-width);
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.page-hero .meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.content-body {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 20px 80px;
}

.content-body h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 36px 0 12px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.content-body h2:first-child {
  border-top: none;
  margin-top: 0;
}

.content-body h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  margin: 24px 0 8px;
}

.content-body p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.7;
}

.content-body ul,
.content-body ol {
  margin: 0 0 14px 24px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.content-body li {
  margin-bottom: 6px;
}

.content-body strong {
  color: var(--text-primary);
  font-weight: 600;
}

.content-body a {
  color: var(--accent);
}

/* ── FAQ accordion-style list ── */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: border-color 0.2s;
}

.faq-item:hover {
  border-color: rgba(79, 195, 247, 0.3);
}

.faq-q {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.faq-a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Divider ── */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

/* ── Utility ── */
.text-accent { color: var(--accent); }
.text-muted  { color: var(--text-secondary); }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }

/* ── Responsive nav collapse for small screens ── */
@media (max-width: 480px) {
  nav a {
    padding: 6px 8px;
    font-size: 0.8rem;
  }
  .brand-name {
    font-size: 1rem;
  }
  .hero {
    padding: 52px 16px 44px;
  }
}