/* ============================================
   JAMES FLOW — Website Stylesheet
   Design: Dark mode, Apple-inspired, clean
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

/* --- CSS Variables --- */
:root {
  --bg-primary: #09090b;
  --bg-secondary: #111113;
  --bg-card: #16161a;
  --bg-card-hover: #1c1c21;
  --bg-elevated: #1e1e23;
  --border-subtle: rgba(255,255,255,0.06);
  --border-medium: rgba(255,255,255,0.10);
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent: #2563eb;
  --accent-hover: #3b82f6;
  --accent-glow: rgba(37,99,235,0.15);
  --accent-soft: rgba(37,99,235,0.08);
  --success: #22c55e;
  --warning: #f59e0b;
  --pro-accent: #2563eb;
  --max-accent: #8b5cf6;
  --ultra-accent: #f59e0b;
  --font-display: 'Outfit', -apple-system, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, sans-serif;
  --section-y: clamp(80px, 10vw, 140px);
  --container-x: clamp(20px, 5vw, 80px);
  --container-max: 1200px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.2s var(--ease-out);
  --transition-medium: 0.4s var(--ease-out);
  --transition-slow: 0.6s var(--ease-out);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; display: block; }
button { font-family: var(--font-body); cursor: pointer; border: none; }

/* --- Container --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-x);
}

/* --- Section Base --- */
.section {
  padding: var(--section-y) 0;
  position: relative;
}
.section-divider {
  height: 1px;
  background: var(--border-subtle);
  max-width: var(--container-max);
  margin: 0 auto;
}

/* --- Typography --- */
.heading-xl {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5.5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}
.heading-lg {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.025em;
  color: var(--text-primary);
}
.heading-md {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.heading-sm {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.5vw, 1.35rem);
  font-weight: 600;
  line-height: 1.3;
}
.text-lg {
  font-size: clamp(1.1rem, 1.8vw, 1.3rem);
  line-height: 1.65;
  color: var(--text-secondary);
}
.text-md {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-secondary);
}
.text-sm {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--text-muted);
}
.text-center { text-align: center; }
.text-accent { color: var(--accent); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 0 var(--accent-glow), 0 2px 8px rgba(0,0,0,0.3);
}
.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 30px var(--accent-glow), 0 4px 16px rgba(0,0,0,0.4);
  transform: translateY(-1px);
}
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}
.btn-secondary:hover {
  background: var(--bg-card);
  border-color: rgba(255,255,255,0.16);
}
.btn-sm { padding: 10px 20px; font-size: 0.875rem; }
.btn-lg { padding: 18px 40px; font-size: 1.1rem; border-radius: var(--radius-lg); }
.btn-group { display: flex; gap: 12px; flex-wrap: wrap; }

/* --- Nav --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: all var(--transition-medium);
  background: transparent;
}
.nav.scrolled {
  background: rgba(9,9,11,0.85);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 0;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-x);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
}
.nav-logo img { width: 32px; height: 32px; border-radius: 8px; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}
.nav-links a:hover { color: var(--text-primary); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-lang {
  position: relative;
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}
.nav-lang:hover { color: var(--text-primary); background: var(--bg-card); }
.nav-mobile-toggle {
  display: none;
  background: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  padding: 8px;
}

/* --- Hero --- */
.hero { padding-top: 140px; padding-bottom: var(--section-y); position: relative; 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 70%);
  pointer-events: none;
}
.hero-content {
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--accent-soft);
  border: 1px solid rgba(37,99,235,0.2);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-hover);
  margin-bottom: 28px;
}
.hero-headline { margin-bottom: 24px; }
.hero-sub { max-width: 640px; margin: 0 auto 20px; }
.hero-bullets {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 24px;
  margin-bottom: 36px;
}
.hero-bullet {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}
.hero-bullet-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}
.hero-ctas { margin-bottom: 16px; justify-content: center; }
.hero-trust { font-size: 0.85rem; color: var(--text-muted); margin-top: 12px; }
.hero-screenshot {
  margin-top: 60px;
  position: relative;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.hero-screenshot img {
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 40px 80px rgba(0,0,0,0.5), 0 0 60px var(--accent-glow);
}
.hero-screenshot::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: 10%;
  right: 10%;
  height: 80px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  filter: blur(20px);
}

/* --- Proof Section --- */
.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.proof-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-medium);
}
.proof-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-medium);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.3);
}
.proof-card-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-soft);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
  font-size: 1.2rem;
}
.proof-card-title { margin-bottom: 10px; }
.proof-card-img {
  margin-top: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}
.proof-card-img img { width: 100%; }

/* --- Pain Section --- */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 40px 0 32px;
}
.pain-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 22px 24px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  transition: border-color var(--transition-fast);
}
.pain-item:hover { border-color: var(--border-medium); }
.pain-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--warning);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.pain-text { font-size: 0.95rem; line-height: 1.55; color: var(--text-secondary); }
.pain-close { max-width: 600px; margin: 0 auto; }

/* --- Mechanism Section --- */
.steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-top: 48px;
}
.step {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-medium);
}
.step:hover {
  border-color: var(--border-medium);
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 50%;
  margin-bottom: 16px;
}
.step-title { margin-bottom: 10px; }
.step-img {
  margin-top: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}
.step-img img { width: 100%; }

/* --- Comparison Section --- */
.comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}
.comparison-table th,
.comparison-table td {
  padding: 16px 20px;
  text-align: center;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.9rem;
}
.comparison-table th {
  background: var(--bg-elevated);
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.85rem;
}
.comparison-table th:first-child,
.comparison-table td:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--text-secondary);
}
.comparison-table th:last-child,
.comparison-table td:last-child {
  background: var(--accent-soft);
  color: var(--text-primary);
  font-weight: 500;
}
.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table td { color: var(--text-muted); }
.check { color: var(--success); font-weight: 700; }
.dash { color: var(--text-muted); opacity: 0.4; }

/* --- Use Cases Section --- */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.usecase-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--transition-medium);
}
.usecase-card:hover {
  border-color: var(--border-medium);
  transform: translateY(-2px);
}
.usecase-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-soft);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.1rem;
}
.usecase-title { margin-bottom: 8px; }

/* --- Pricing Section --- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
  align-items: start;
}
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  position: relative;
  transition: all var(--transition-medium);
}
.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 40px var(--accent-glow);
}
.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  background: var(--accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.pricing-name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 4px;
}
.pricing-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.pricing-price { margin-bottom: 24px; }
.pricing-amount {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}
.pricing-currency { font-size: 1.2rem; font-weight: 500; color: var(--text-muted); }
.pricing-period { font-size: 0.85rem; color: var(--text-muted); }
.pricing-features {
  list-style: none;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.45;
}
.pricing-features li::before {
  content: '\2713';
  color: var(--success);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
.pricing-cta { width: 100%; }
.pricing-note {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}

/* --- FAQ Section --- */
.faq-list {
  max-width: 760px;
  margin: 40px auto 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}
.faq-item.open { border-color: var(--border-medium); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: none;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast);
}
.faq-question:hover { color: var(--accent-hover); }
.faq-arrow {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
  color: var(--text-muted);
  flex-shrink: 0;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-medium), padding var(--transition-medium);
}
.faq-item.open .faq-answer { max-height: 300px; }
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* --- CTA Final Section --- */
.cta-final {
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-final::before {
  content: '';
  position: absolute;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}
.cta-final-content { position: relative; z-index: 1; }
.cta-final .heading-lg { margin-bottom: 16px; }
.cta-final .text-lg { max-width: 540px; margin: 0 auto 32px; }

/* --- Footer --- */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--border-subtle);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); font-size: 0.85rem; }
.footer-links a:hover { color: var(--text-primary); }
.footer-copy { color: var(--text-muted); font-size: 0.85rem; }

/* --- Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .proof-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }
  .hero { padding-top: 110px; }
  .proof-grid { grid-template-columns: 1fr; }
  .pain-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .usecases-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }
  .comparison-table { font-size: 0.8rem; }
  .comparison-table th,
  .comparison-table td { padding: 12px 10px; }
  .hero-bullets { flex-direction: column; align-items: center; }
  .btn-group { flex-direction: column; align-items: stretch; }
  .btn-group .btn { text-align: center; }
  .footer-inner { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .heading-xl { font-size: 2rem; }
  .heading-lg { font-size: 1.7rem; }
  .comparison-table th:nth-child(2),
  .comparison-table th:nth-child(3),
  .comparison-table th:nth-child(4),
  .comparison-table td:nth-child(2),
  .comparison-table td:nth-child(3),
  .comparison-table td:nth-child(4) { display: none; }
}