/* Cyphora — Brand Styles */

:root {
  --color-primary: #4338CA;
  --color-primary-hover: #3730A3;
  --color-accent: #06B6D4;
  --color-bg: #0F172A;
  --color-surface: #1E293B;
  --color-surface-hover: #334155;
  --color-text: #F8FAFC;
  --color-text-muted: #94A3B8;
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --color-border: #334155;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  margin: 0;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; }
h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
h3 { font-size: 1.25rem; }

/* Nav */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background 0.3s;
}
.nav-container {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 1.5rem;
}
.nav-logo { display: flex; align-items: center; gap: 0.5rem; text-decoration: none; }
.nav-logo img { height: 32px; width: auto; }
.nav-logo span { font-weight: 700; font-size: 1.25rem; color: var(--color-text); }
.nav-links { display: flex; align-items: center; gap: 1.5rem; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  color: var(--color-text-muted); text-decoration: none;
  font-size: 0.9rem; font-weight: 500; transition: color 0.2s;
}
.nav-links a:hover { color: var(--color-text); }
.nav-cta {
  background: var(--color-primary); color: white !important;
  padding: 0.5rem 1.25rem; border-radius: 8px;
  font-weight: 600 !important; transition: background 0.2s;
}
.nav-cta:hover { background: var(--color-primary-hover); }

.mobile-menu-btn { display: none; background: none; border: none; color: var(--color-text); font-size: 1.5rem; cursor: pointer; }

/* Hero */
.hero {
  padding: 8rem 1.5rem 5rem;
  text-align: center;
  max-width: 900px; margin: 0 auto;
}
.hero-badge {
  display: inline-block; background: rgba(6, 182, 212, 0.1);
  color: var(--color-accent); font-size: 0.85rem; font-weight: 600;
  padding: 0.35rem 1rem; border-radius: 999px; margin-bottom: 1.5rem;
  border: 1px solid rgba(6, 182, 212, 0.2);
}
.hero h1 { margin: 0 0 1.25rem; }
.hero-gradient {
  background: linear-gradient(135deg, #818CF8, #06B6D4, #34D399);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.2rem; color: var(--color-text-muted);
  max-width: 640px; margin: 0 auto 2.5rem;
}
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.hero-actions + .hero-actions { margin-top: 1rem; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.75rem; border-radius: 10px;
  font-weight: 600; font-size: 1rem; text-decoration: none;
  transition: all 0.2s; cursor: pointer; border: none;
}
.btn-primary {
  background: var(--color-primary); color: white;
  box-shadow: 0 4px 14px rgba(67, 56, 202, 0.4);
}
.btn-primary:hover { background: var(--color-primary-hover); transform: translateY(-1px); }
.btn-secondary {
  background: transparent; color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover { background: var(--color-surface); }
.btn-accent {
  background: var(--color-accent); color: #0F172A;
}
.btn-accent:hover { filter: brightness(1.1); }
.btn-lg { padding: 0.9rem 2.25rem; font-size: 1.05rem; }

/* Sections */
.section {
  padding: 5rem 1.5rem;
  max-width: 1200px; margin: 0 auto;
}
.section-header {
  text-align: center; max-width: 700px; margin: 0 auto 4rem;
}
.section-header h2 { margin: 0 0 1rem; }
.section-header p { color: var(--color-text-muted); font-size: 1.1rem; }

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.feature-grid-4col {
  grid-template-columns: repeat(4, 1fr);
}
.feature-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 12px; padding: 2rem;
  transition: border-color 0.2s, transform 0.2s;
}
.feature-card:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.feature-card .icon {
  width: 48px; height: 48px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: 1.25rem;
}
.icon-indigo { background: rgba(67, 56, 202, 0.15); color: #818CF8; }
.icon-cyan { background: rgba(6, 182, 212, 0.15); color: #22D3EE; }
.icon-emerald { background: rgba(16, 185, 129, 0.15); color: #34D399; }
.icon-amber { background: rgba(245, 158, 11, 0.15); color: #FBBF24; }
.feature-card h3 { margin: 0 0 0.5rem; font-size: 1.1rem; }
.feature-card p { color: var(--color-text-muted); margin: 0; font-size: 0.95rem; }

/* Persona Cards */
.persona-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.persona-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 12px; padding: 2rem; text-align: center;
  transition: border-color 0.2s;
}
.persona-card:hover { border-color: var(--color-accent); }
.persona-card .persona-icon {
  width: 56px; height: 56px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin: 0 auto 1rem;
}
.persona-card h3 { margin: 0 0 0.5rem; }
.persona-card p { color: var(--color-text-muted); font-size: 0.9rem; margin: 0; }

/* Pricing Cards */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem; align-items: start;
}
.pricing-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 16px; padding: 2rem; position: relative;
  transition: border-color 0.2s, transform 0.2s;
}
.pricing-card:hover { transform: translateY(-4px); }
.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), 0 8px 32px rgba(67, 56, 202, 0.2);
  transform: scale(1.03);
}
.pricing-card.featured:hover { transform: scale(1.03) translateY(-4px); }
.pricing-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--color-primary); color: white;
  font-size: 0.8rem; font-weight: 600; padding: 0.3rem 1rem; border-radius: 999px;
}
.pricing-header { text-align: center; margin-bottom: 1.5rem; }
.pricing-name { font-size: 1.1rem; font-weight: 700; margin: 0 0 0.25rem; }
.pricing-description { color: var(--color-text-muted); font-size: 0.85rem; margin: 0; }
.pricing-amount { text-align: center; margin-bottom: 1.5rem; }
.pricing-amount .price { font-size: 2.8rem; font-weight: 800; }
.pricing-amount .period { color: var(--color-text-muted); font-size: 0.9rem; }
.pricing-amount .price-yearly { display: none; }
.pricing-features { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.pricing-features li {
  padding: 0.5rem 0; font-size: 0.9rem; display: flex; align-items: center; gap: 0.5rem;
  border-top: 1px solid rgba(51, 65, 85, 0.5);
}
.pricing-features li .check { color: var(--color-success); font-weight: 700; }
.pricing-features li .dash { color: var(--color-text-muted); }
.pricing-cta { text-align: center; }
.pricing-cta .btn { width: 100%; justify-content: center; }

/* Toggle */
.billing-toggle {
  display: flex; align-items: center; justify-content: center; gap: 1rem;
  margin-bottom: 2.5rem;
}
.billing-toggle span { font-size: 0.95rem; color: var(--color-text-muted); }
.billing-toggle span.active { color: var(--color-text); font-weight: 600; }
.toggle-switch {
  position: relative; width: 50px; height: 28px; cursor: pointer;
}
.toggle-switch input { display: none; }
.toggle-slider {
  position: absolute; inset: 0; border-radius: 999px;
  background: var(--color-surface); border: 1px solid var(--color-border);
  transition: background 0.3s;
}
.toggle-slider::after {
  content: ''; position: absolute;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--color-primary); top: 3px; left: 3px;
  transition: transform 0.3s;
}
.toggle-switch input:checked + .toggle-slider::after { transform: translateX(22px); }
.toggle-switch input:checked + .toggle-slider { background: rgba(67, 56, 202, 0.2); }
.save-badge {
  font-size: 0.75rem; background: rgba(16, 185, 129, 0.15);
  color: var(--color-success); padding: 0.15rem 0.5rem; border-radius: 999px;
  font-weight: 600;
}

/* Feature table */
.comparison-table {
  width: 100%; border-collapse: collapse; margin-top: 3rem;
  font-size: 0.9rem;
}
.comparison-table th, .comparison-table td {
  padding: 0.75rem 1rem; text-align: center; border-bottom: 1px solid var(--color-border);
}
.comparison-table th:first-child, .comparison-table td:first-child { text-align: left; }
.comparison-table th { color: var(--color-text-muted); font-weight: 600; font-size: 0.85rem; }
.comparison-table .check-col { color: var(--color-success); font-weight: 700; }

/* Content sections */
.content-block {
  max-width: 800px; margin: 0 auto 4rem;
}
.content-block:last-child { margin-bottom: 0; }
.content-block h2 { margin: 0 0 1rem; }
.content-block h3 { margin: 2rem 0 0.75rem; color: var(--color-accent); }
.content-block p { color: var(--color-text-muted); margin: 0 0 1rem; }
.content-block ul { color: var(--color-text-muted); padding-left: 1.5rem; }
.content-block li { margin-bottom: 0.5rem; }

/* Architecture diagram */
.arch-diagram {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 12px; padding: 2rem; margin: 2rem 0;
  overflow-x: auto;
}
.arch-layer {
  border: 1px dashed var(--color-border); border-radius: 8px;
  padding: 1.25rem; margin-bottom: 1rem; text-align: center;
}
.arch-layer:last-child { margin-bottom: 0; }
.arch-layer-label {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--color-text-muted); margin-bottom: 0.75rem;
}
.arch-blocks { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }
.arch-block {
  background: rgba(67, 56, 202, 0.15); color: #A5B4FC;
  border: 1px solid rgba(67, 56, 202, 0.3);
  border-radius: 6px; padding: 0.5rem 1rem; font-size: 0.8rem; font-weight: 500;
}
.arch-divider {
  display: flex; align-items: center; gap: 0.5rem;
  color: var(--color-text-muted); font-size: 0.8rem;
  margin: 0.5rem 0;
}
.arch-divider::before, .arch-divider::after {
  content: ''; flex: 1; border-top: 1px solid var(--color-border);
}

/* Trust signals */
.trust-strip {
  display: flex; gap: 2rem; justify-content: center; flex-wrap: wrap;
  padding: 2rem 0;
}
.trust-item {
  text-align: center;
}
.trust-item .trust-number { font-size: 1.8rem; font-weight: 800; color: var(--color-accent); }
.trust-item .trust-label { font-size: 0.85rem; color: var(--color-text-muted); }

/* Footer */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 3rem 1.5rem 2rem;
}
.footer-container {
  max-width: 1200px; margin: 0 auto;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 2rem;
}
.footer-brand { max-width: 300px; }
.footer-brand p { color: var(--color-text-muted); font-size: 0.9rem; }
.footer-links { display: flex; gap: 3rem; flex-wrap: wrap; }
.footer-links h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--color-text-muted); margin: 0 0 0.75rem; }
.footer-links ul { list-style: none; padding: 0; margin: 0; }
.footer-links a { color: var(--color-text); text-decoration: none; font-size: 0.9rem; line-height: 2; }
.footer-links a:hover { color: var(--color-accent); }
.footer-bottom {
  max-width: 1200px; margin: 2rem auto 0; padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  font-size: 0.85rem; color: var(--color-text-muted);
}

/* Download page */
.download-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 16px; padding: 3rem; text-align: center; max-width: 500px;
  margin: 2rem auto;
}
.download-card .platform-icon { font-size: 3rem; margin-bottom: 0.5rem; }
.download-card .version { color: var(--color-text-muted); font-size: 0.9rem; margin-bottom: 1.5rem; }
.quick-steps { max-width: 600px; margin: 0 auto; }
.quick-step {
  display: flex; gap: 1rem; align-items: flex-start; margin-bottom: 1.5rem;
}
.quick-step .step-num {
  width: 36px; height: 36px; border-radius: 50%; background: var(--color-primary);
  display: flex; align-items: center; justify-content: center; font-weight: 700;
  font-size: 0.9rem; flex-shrink: 0;
}
.quick-step h4 { margin: 0 0 0.25rem; }
.quick-step p { color: var(--color-text-muted); margin: 0; font-size: 0.9rem; }

/* Blog cards */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}
.blog-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 12px; overflow: hidden;
  transition: border-color 0.2s;
}
.blog-card:hover { border-color: var(--color-accent); }
.blog-card-content { padding: 1.5rem; }
.blog-card .category {
  font-size: 0.8rem; color: var(--color-accent); font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.05em; margin-bottom: 0.5rem;
}
.blog-card h3 { margin: 0 0 0.5rem; font-size: 1.15rem; }
.blog-card p { color: var(--color-text-muted); font-size: 0.9rem; margin: 0 0 1rem; }
.blog-card .date { font-size: 0.8rem; color: var(--color-text-muted); }

/* Three-step visual */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem; margin: 2rem 0;
}
.step {
  text-align: center; position: relative;
}
.step-num-lg {
  width: 64px; height: 64px; border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 800; margin: 0 auto 1rem;
}

/* Comparison split */
.comparison-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem; margin: 2rem 0;
}
.comp-bad {
  background: rgba(239, 68, 68, 0.08); border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: 12px; padding: 1.5rem;
}
.comp-good {
  background: rgba(16, 185, 129, 0.08); border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 12px; padding: 1.5rem;
}
.comp-bad h4 { color: var(--color-error); margin: 0 0 0.5rem; }
.comp-good h4 { color: var(--color-success); margin: 0 0 0.5rem; }

/* Mobile */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--color-surface); border-bottom: 1px solid var(--color-border);
    padding: 1rem 1.5rem; gap: 0.75rem;
  }
  .mobile-menu-btn { display: block; }
  .hero { padding: 6rem 1rem 3rem; }
  .section { padding: 3rem 1rem; }
  .feature-grid-4col { grid-template-columns: repeat(2, 1fr); }
  .pricing-card.featured { transform: none; }
  .pricing-card.featured:hover { transform: translateY(-4px); }
  .comparison-split { grid-template-columns: 1fr; }
  .comparison-table { font-size: 0.75rem; }
  .comparison-table th, .comparison-table td { padding: 0.5rem 0.6rem; }
  .footer-container { flex-direction: column; }
  .steps { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: center; }
}

/* Animations */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.6s, transform 0.6s; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Enterprise card */
.enterprise-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 16px; padding: 2rem; margin-top: 1.5rem;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
}