/* ============================================
   Algorific — Style System
   ============================================ */

:root {
  --bg-primary: #0B0F1A;
  --bg-secondary: #111827;
  --bg-card: #151C2C;
  --bg-card-hover: #1A2236;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(14, 165, 233, 0.3);
  --text-primary: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --accent-blue: #0EA5E9;
  --accent-blue-dim: rgba(14, 165, 233, 0.15);
  --accent-gold: #F59E0B;
  --accent-gold-dim: rgba(245, 158, 11, 0.15);
  --accent-green: #10B981;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.4);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* Utility */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.text-gradient {
  background: linear-gradient(135deg, var(--accent-blue) 0%, #38BDF8 50%, var(--accent-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================
   Navigation
   ============================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 16px 0;
  background: rgba(11, 15, 26, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em;
  display: flex; align-items: center; gap: 8px;
}
.logo-icon {
  color: var(--accent-blue);
  font-size: 1.4rem;
}
.nav-links {
  display: flex; align-items: center; gap: 32px;
}
.nav-links a {
  font-size: 0.875rem; font-weight: 500; color: var(--text-secondary);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text-primary); }
.nav-cta {
  background: var(--accent-blue-dim) !important;
  color: var(--accent-blue) !important;
  padding: 8px 16px; border-radius: var(--radius-sm);
  font-weight: 600 !important;
  transition: all var(--transition) !important;
}
.nav-cta:hover { background: rgba(14, 165, 233, 0.25) !important; }
.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  flex-direction: column; gap: 5px; padding: 4px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px; background: var(--text-primary);
  border-radius: 2px; transition: var(--transition);
}

/* ============================================
   Hero
   ============================================ */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}
.hero-canvas {
  position: absolute; inset: 0; width: 100%; height: 100%;
  opacity: 0.4;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(14, 165, 233, 0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 50%, rgba(245, 158, 11, 0.04) 0%, transparent 50%);
  pointer-events: none;
}
.hero-content {
  position: relative; z-index: 2;
  text-align: center; max-width: 800px;
}
.hero-badge {
  display: inline-block;
  padding: 6px 16px; border-radius: 100px;
  background: var(--accent-blue-dim);
  color: var(--accent-blue);
  font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.05em; text-transform: uppercase;
  margin-bottom: 24px;
  border: 1px solid rgba(14, 165, 233, 0.2);
}
.hero-title {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 900; line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary); line-height: 1.7;
  max-width: 600px; margin: 0 auto 40px;
}
.hero-ctas {
  display: flex; align-items: center; justify-content: center;
  gap: 16px; flex-wrap: wrap; margin-bottom: 48px;
}
.hero-stats {
  display: flex; align-items: center; justify-content: center; gap: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.stat { text-align: center; }
.stat-number {
  display: block; font-size: 1.5rem; font-weight: 800;
  color: var(--text-primary);
}
.stat-label {
  font-size: 0.75rem; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.08em; font-weight: 500;
}
.stat-divider {
  width: 1px; height: 32px;
  background: var(--border);
}
.hero-scroll-indicator {
  position: absolute; bottom: 32px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--text-muted); font-size: 0.75rem;
  animation: float 3s ease-in-out infinite;
}
.scroll-arrow {
  width: 20px; height: 20px; border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
}
@keyframes float { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: var(--radius-sm);
  font-size: 0.9rem; font-weight: 600;
  cursor: pointer; border: none;
  transition: all var(--transition);
  font-family: var(--font);
}
.btn-primary {
  background: var(--accent-blue);
  color: #fff;
  box-shadow: 0 0 20px rgba(14, 165, 233, 0.3);
}
.btn-primary:hover {
  background: #38BDF8;
  box-shadow: 0 0 30px rgba(14, 165, 233, 0.5);
  transform: translateY(-2px);
}
.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
  width: 100%; justify-content: center;
}
.btn-outline:hover {
  border-color: var(--accent-blue);
  background: var(--accent-blue-dim);
}

/* ============================================
   Sections
   ============================================ */
.section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-label {
  display: inline-block;
  font-size: 0.8rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--accent-blue);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800; line-height: 1.15;
  letter-spacing: -0.02em; margin-bottom: 16px;
}
.section-desc {
  font-size: 1.05rem; color: var(--text-secondary);
  max-width: 560px; margin: 0 auto;
}

/* ============================================
   Indicator Cards
   ============================================ */
.indicators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.indicator-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all var(--transition);
  position: relative;
  display: flex; flex-direction: column;
}
.indicator-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.indicator-card.featured {
  border-color: rgba(14, 165, 233, 0.2);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(14, 165, 233, 0.05) 100%);
}
.card-badge {
  display: inline-block; width: fit-content;
  padding: 4px 12px; border-radius: 100px;
  font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  margin-bottom: 16px;
}
.card-badge.premium {
  background: var(--accent-gold-dim);
  color: var(--accent-gold);
  border: 1px solid rgba(245, 158, 11, 0.2);
}
.card-badge.free {
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.2);
}
.card-badge.essentials {
  background: var(--accent-blue-dim);
  color: var(--accent-blue);
  border: 1px solid rgba(14, 165, 233, 0.2);
}
.card-badge.bundle {
  background: rgba(168, 85, 247, 0.1);
  color: #A855F7;
  border: 1px solid rgba(168, 85, 247, 0.2);
}
.card-icon { margin-bottom: 16px; }
.card-title {
  font-size: 1.15rem; font-weight: 700;
  line-height: 1.3; margin-bottom: 12px;
}
.card-desc {
  font-size: 0.9rem; color: var(--text-secondary);
  line-height: 1.6; margin-bottom: 16px; flex-grow: 1;
}
.card-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.tag {
  padding: 4px 10px; border-radius: 100px;
  font-size: 0.7rem; font-weight: 500;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.card-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.85rem; font-weight: 600;
  color: var(--accent-blue);
  transition: gap var(--transition);
}
.card-link:hover { gap: 10px; }

/* Indicator subsections */
.indicators-subsection {
  text-align: center;
  margin-bottom: 2rem;
}
.subsection-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
.subsection-desc {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ============================================
   Pricing
   ============================================ */
.pricing-two-col {
  max-width: 720px;
  margin: 0 auto;
  grid-template-columns: 1fr 1fr !important;
}
.pricing { background: var(--bg-secondary); }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  display: flex; flex-direction: column;
  position: relative;
  transition: all var(--transition);
}
.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.pricing-card.popular {
  border-color: var(--accent-blue);
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.08) 0%, var(--bg-card) 40%);
}
.popular-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  padding: 4px 16px; border-radius: 100px;
  background: var(--accent-blue); color: #fff;
  font-size: 0.7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.05em; white-space: nowrap;
}
.pricing-tier {
  font-size: 0.85rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--text-muted);
  margin-bottom: 12px;
}
.pricing-price { margin-bottom: 8px; }
.price-amount {
  font-size: 2.8rem; font-weight: 900;
  letter-spacing: -0.03em;
}
.price-period {
  font-size: 0.9rem; color: var(--text-muted); font-weight: 400;
}
.pricing-desc {
  font-size: 0.9rem; color: var(--text-secondary);
  margin-bottom: 24px;
}
.pricing-features {
  display: flex; flex-direction: column; gap: 12px;
  margin-bottom: 32px; flex-grow: 1;
}
.pricing-features li {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.875rem; color: var(--text-secondary);
}

/* ============================================
   About
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px; align-items: center;
}
.about-photo-placeholder {
  width: 200px; height: 200px; border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 32px;
}
.about-credentials {
  display: flex; flex-direction: column; gap: 12px;
}
.credential {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; border-radius: var(--radius-sm);
  background: var(--bg-card); border: 1px solid var(--border);
  font-size: 0.9rem; font-weight: 500;
}
.about-text p {
  color: var(--text-secondary); margin-bottom: 16px;
  font-size: 1rem; line-height: 1.7;
}
.about-cta { margin-top: 24px; }

/* ============================================
   Social Proof
   ============================================ */
.social-proof { background: var(--bg-secondary); }
.proof-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px; margin-bottom: 48px;
}
.proof-card {
  text-align: center; padding: 40px 24px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius);
}
.proof-number { font-size: 3rem; margin-bottom: 8px; }
.proof-label {
  font-size: 1rem; font-weight: 600; margin-bottom: 4px;
}
.proof-sublabel { font-size: 0.8rem; color: var(--text-muted); }
.testimonials-placeholder { text-align: center; }
.testimonial-coming {
  padding: 40px; border-radius: var(--radius);
  background: var(--bg-card); border: 1px solid var(--border);
  max-width: 500px; margin: 0 auto;
}
.testimonial-coming p {
  font-style: italic; color: var(--text-secondary);
  font-size: 1rem; margin-bottom: 12px;
}
.testimonial-coming span { font-size: 0.85rem; color: var(--text-muted); }

/* ============================================
   Newsletter
   ============================================ */
.newsletter-inner {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 64px;
}
.newsletter-content p {
  color: var(--text-secondary); margin-top: 16px;
  font-size: 0.95rem; line-height: 1.7;
}
.form-group {
  display: flex; gap: 12px;
}
.form-input {
  flex: 1; padding: 14px 18px;
  background: var(--bg-primary); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-primary);
  font-size: 0.9rem; font-family: var(--font);
  transition: border-color var(--transition);
  outline: none;
}
.form-input:focus { border-color: var(--accent-blue); }
.form-input::placeholder { color: var(--text-muted); }
.form-btn { white-space: nowrap; }
.form-note {
  font-size: 0.8rem; color: var(--text-muted);
  margin-top: 12px;
}
.form-success {
  display: none; align-items: center; gap: 8px;
  margin-top: 16px; padding: 12px 16px;
  background: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: var(--radius-sm);
  font-size: 0.9rem; color: var(--accent-blue);
}
.form-success.visible { display: flex; }

/* ============================================
   Footer
   ============================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px; margin-bottom: 48px;
}
.footer-brand p {
  color: var(--text-muted); font-size: 0.875rem;
  line-height: 1.6; margin-top: 12px; max-width: 280px;
}
.footer-links h4 {
  font-size: 0.8rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--text-muted);
  margin-bottom: 16px;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  font-size: 0.9rem; color: var(--text-secondary);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--text-primary); }
.footer-bottom {
  padding-top: 32px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 0.8rem; color: var(--text-muted); }
.footer-disclaimer { font-style: italic; }

/* ============================================
   Animations
   ============================================ */
.fade-in {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1; transform: translateY(0);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    padding: 24px;
    gap: 16px;
  }
  .nav-toggle { display: flex; }
  .indicators-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; text-align: center; }
  .newsletter-inner {
    grid-template-columns: 1fr;
    padding: 40px 28px; gap: 32px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .hero-stats { gap: 20px; flex-wrap: wrap; }
}

@media (max-width: 600px) {
  .section { padding: 64px 0; }
  .pricing-grid, .pricing-two-col { grid-template-columns: 1fr !important; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .form-group { flex-direction: column; }
  .hero { padding: 100px 20px 60px; }
  .hero-ctas { flex-direction: column; width: 100%; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
}