/* ============================================
   Kindred — Marketing Site Styles
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #395e9f;
  --primary-dim: #2b5292;
  --primary-container: #a3c1ff;
  --secondary: #6b46c1;
  --secondary-container: #e9ddff;
  --tertiary: #006e40;
  --tertiary-container: #93fbba;
  --surface: #fbf8ff;
  --surface-dim: #d5d7ff;
  --surface-container: #edecff;
  --surface-container-low: #f4f2ff;
  --on-surface: #0015a4;
  --on-surface-variant: #2a40ff;
  --outline: #596aff;
  --outline-variant: #a3acff;
  --inverse-surface: #000340;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  color: var(--inverse-surface);
  background: var(--surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* --- Typography --- */
h1 { font-size: clamp(2.4rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
h3 { font-size: 1.25rem; font-weight: 700; line-height: 1.3; }
h1 em, h2 em { font-style: italic; color: var(--secondary); }

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 28px; border-radius: var(--radius-xl);
  font-family: inherit; font-weight: 700; font-size: 0.95rem;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  color: #fff; border: none; cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(107, 70, 193, 0.3); }
.btn-sm { padding: 8px 20px; font-size: 0.85rem; }
.btn-lg { padding: 16px 36px; font-size: 1rem; }
.btn-outline {
  background: transparent; color: var(--primary);
  border: 2px solid var(--outline-variant);
}
.btn-outline:hover { background: var(--surface-container); box-shadow: 0 4px 20px rgba(89, 106, 255, 0.12); }

.badge {
  display: inline-block; padding: 6px 16px; border-radius: 100px;
  background: var(--secondary-container); color: var(--secondary);
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.04em;
  text-transform: uppercase; margin-bottom: 16px;
}

/* --- Nav --- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 16px 0;
  background: rgba(251, 248, 255, 0.8);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(163, 172, 255, 0.15);
  transition: padding 0.3s;
}
.nav.scrolled { padding: 10px 0; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.25rem; color: var(--inverse-surface); }
.logo-icon { width: 32px; height: 32px; }
.nav-links { display: flex; gap: 32px; flex: 1; justify-content: center; }
.nav-links a { font-size: 0.9rem; font-weight: 600; color: var(--on-surface); opacity: 0.7; transition: opacity 0.2s; }
.nav-links a:hover { opacity: 1; }
.menu-toggle { display: none; background: none; border: none; cursor: pointer; width: 28px; height: 20px; position: relative; }
.menu-toggle span { display: block; width: 100%; height: 2px; background: var(--inverse-surface); position: absolute; left: 0; transition: 0.3s; }
.menu-toggle span:nth-child(1) { top: 0; }
.menu-toggle span:nth-child(2) { top: 9px; }
.menu-toggle span:nth-child(3) { top: 18px; }

.mobile-menu {
  display: none; position: fixed; top: 70px; left: 0; right: 0;
  background: rgba(251, 248, 255, 0.97); backdrop-filter: blur(20px);
  padding: 24px; flex-direction: column; gap: 16px; z-index: 99;
  border-bottom: 1px solid rgba(163, 172, 255, 0.15);
}
.mobile-menu a { font-size: 1.1rem; font-weight: 600; padding: 8px 0; }
.mobile-menu .btn { text-align: center; margin-top: 8px; }

/* --- Hero --- */
.hero {
  position: relative; padding: 160px 0 100px; overflow: hidden;
  min-height: 90vh; display: flex; align-items: center;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 20%, rgba(163, 193, 255, 0.3) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 60%, rgba(233, 221, 255, 0.35) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 50% 90%, rgba(147, 251, 186, 0.15) 0%, transparent 70%);
}
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; position: relative; }
.hero-text { max-width: 560px; }
.hero-sub { font-size: 1.15rem; color: var(--on-surface); opacity: 0.7; margin: 20px 0 32px; line-height: 1.7; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.social-proof { display: flex; align-items: center; gap: 12px; margin-top: 40px; font-size: 0.85rem; color: var(--on-surface); opacity: 0.6; }
.avatars { display: flex; }
.avatar-dot { width: 28px; height: 28px; border-radius: 50%; border: 2px solid var(--surface); margin-left: -8px; }
.avatar-dot:first-child { margin-left: 0; }

/* Phone mockup */
.hero-visual { position: relative; display: flex; justify-content: center; }
.phone-frame {
  width: 280px; border-radius: 36px; overflow: hidden;
  background: #fff; box-shadow: 0 25px 80px rgba(0, 3, 64, 0.15), 0 0 0 1px rgba(163, 172, 255, 0.15);
  position: relative;
}
.phone-screen { padding: 0; }
.mock-header {
  display: flex; align-items: center; gap: 12px;
  padding: 20px 20px 14px; background: linear-gradient(135deg, var(--secondary), var(--primary));
  color: #fff;
}
.mock-avatar { width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,0.25); }
.mock-name { font-weight: 700; font-size: 0.95rem; }
.mock-status { font-size: 0.75rem; opacity: 0.8; }
.mock-messages { padding: 16px; display: flex; flex-direction: column; gap: 8px; }
.mock-bubble {
  padding: 10px 14px; border-radius: 16px; max-width: 85%;
  font-size: 0.8rem; line-height: 1.4; position: relative;
}
.mock-bubble time { display: block; font-size: 0.6rem; opacity: 0.5; margin-top: 4px; }
.mock-bubble-them { background: var(--surface-container); align-self: flex-start; border-bottom-left-radius: 4px; }
.mock-bubble-me { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; align-self: flex-end; border-bottom-right-radius: 4px; }
.mock-bubble-me time { opacity: 0.7; }
.mock-input {
  display: flex; align-items: center; gap: 8px; padding: 12px 16px;
  border-top: 1px solid rgba(163, 172, 255, 0.15);
}
.mock-input-field {
  flex: 1; padding: 10px 16px; border-radius: 100px;
  background: var(--surface-container-low); font-size: 0.8rem; color: var(--outline-variant);
}
.mock-send {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  display: flex; align-items: center; justify-content: center;
}

.floating-card {
  position: absolute; display: flex; align-items: center; gap: 10px;
  padding: 12px 18px; border-radius: var(--radius-md);
  background: #fff; box-shadow: 0 8px 30px rgba(0, 3, 64, 0.1);
  font-size: 0.8rem; font-weight: 600;
  animation: float 6s ease-in-out infinite;
}
.card-shield { top: 15%; right: -20px; }
.card-lock { bottom: 20%; left: -30px; animation-delay: -3s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* --- Trust bar --- */
.trust-bar { padding: 48px 0; border-bottom: 1px solid rgba(163, 172, 255, 0.1); }
.trust-bar .container { text-align: center; }
.trust-bar p { font-size: 0.8rem; font-weight: 600; opacity: 0.4; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 20px; }
.trust-logos { display: flex; justify-content: center; gap: 48px; flex-wrap: wrap; }
.trust-logos span {
  font-size: 0.95rem; font-weight: 700; opacity: 0.3;
  letter-spacing: 0.02em;
}

/* --- Features --- */
.features { padding: 120px 0; }
.section-header { text-align: center; max-width: 600px; margin: 0 auto 64px; }
.section-header p { margin-top: 16px; font-size: 1.05rem; opacity: 0.6; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  padding: 36px; border-radius: var(--radius-lg);
  background: #fff; border: 1px solid rgba(163, 172, 255, 0.12);
  transition: transform 0.3s, box-shadow 0.3s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0, 3, 64, 0.08); }
.feature-highlight {
  background: linear-gradient(135deg, rgba(233, 221, 255, 0.3), rgba(163, 193, 255, 0.2));
  border-color: rgba(107, 70, 193, 0.15);
}
.feature-icon {
  width: 52px; height: 52px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.icon-purple { background: var(--secondary-container); color: var(--secondary); }
.icon-blue { background: rgba(163, 193, 255, 0.3); color: var(--primary); }
.icon-green { background: rgba(147, 251, 186, 0.3); color: var(--tertiary); }
.feature-card h3 { margin-bottom: 10px; }
.feature-card p { font-size: 0.9rem; opacity: 0.65; line-height: 1.6; }

/* --- How it works --- */
.how-it-works { padding: 120px 0; background: var(--surface-container-low); }
.steps { display: flex; flex-direction: column; gap: 48px; max-width: 800px; margin: 0 auto; }
.step {
  display: grid; grid-template-columns: auto 1fr 1fr; gap: 32px; align-items: center;
  padding: 36px; border-radius: var(--radius-lg);
  background: #fff; border: 1px solid rgba(163, 172, 255, 0.1);
}
.step-number {
  width: 52px; height: 52px; border-radius: 50%;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  color: #fff; font-weight: 800; font-size: 1.3rem;
  display: flex; align-items: center; justify-content: center;
}
.step-content h3 { margin-bottom: 8px; }
.step-content p { font-size: 0.9rem; opacity: 0.6; line-height: 1.6; }
.step-visual { display: flex; justify-content: center; }
.step-mockup {
  background: var(--surface-container-low); border-radius: var(--radius-md);
  padding: 16px; width: 100%; min-width: 200px;
}
.mockup-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px; border-radius: var(--radius-sm);
  background: #fff; margin-bottom: 8px;
}
.mockup-item:last-child { margin-bottom: 0; }
.mockup-avatar { width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0; }
.mockup-label { font-weight: 700; font-size: 0.85rem; }
.mockup-sublabel { font-size: 0.75rem; opacity: 0.5; font-family: monospace; }
.mockup-request { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; padding: 10px; background: #fff; border-radius: var(--radius-sm); }
.mockup-request .mockup-label { font-size: 0.8rem; flex: 1; min-width: 120px; }
.mockup-actions { display: flex; gap: 8px; }
.mockup-btn-approve { padding: 6px 14px; border-radius: 100px; background: var(--tertiary); color: #fff; font-size: 0.75rem; font-weight: 700; }
.mockup-btn-deny { padding: 6px 14px; border-radius: 100px; background: transparent; border: 1px solid rgba(163, 172, 255, 0.3); font-size: 0.75rem; font-weight: 600; opacity: 0.5; }
.mockup-chat-preview { display: flex; flex-direction: column; gap: 6px; }
.mini-bubble {
  padding: 8px 14px; border-radius: 14px; font-size: 0.8rem;
  max-width: 80%; line-height: 1.4;
}
.mini-bubble.left { background: #fff; align-self: flex-start; border-bottom-left-radius: 4px; }
.mini-bubble.right { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; align-self: flex-end; border-bottom-right-radius: 4px; }

/* --- Safety --- */
.safety { padding: 120px 0; }
.safety-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.safety-text h2 { margin-bottom: 16px; }
.safety-text > p { font-size: 1.05rem; opacity: 0.65; margin-bottom: 36px; line-height: 1.7; }
.safety-list { list-style: none; display: flex; flex-direction: column; gap: 20px; }
.safety-list li { display: flex; gap: 14px; align-items: flex-start; }
.safety-list li svg { flex-shrink: 0; margin-top: 2px; }
.safety-list strong { display: block; font-weight: 700; margin-bottom: 2px; }
.safety-list span { font-size: 0.9rem; opacity: 0.6; line-height: 1.5; }

.safety-visual { display: flex; flex-direction: column; align-items: center; }
.safety-diagram {
  display: flex; align-items: center; gap: 16px;
  padding: 40px 32px; border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(233, 221, 255, 0.2), rgba(163, 193, 255, 0.15));
  border: 1px solid rgba(163, 172, 255, 0.15);
  width: 100%;
}
.diagram-device, .diagram-server {
  flex: 1; text-align: center; padding: 20px; border-radius: var(--radius-md);
  background: #fff; border: 1px solid rgba(163, 172, 255, 0.15);
}
.diagram-label { font-size: 0.75rem; font-weight: 700; margin-bottom: 8px; opacity: 0.7; }
.diagram-key { font-size: 1.5rem; }
.diagram-cipher { font-family: monospace; font-size: 0.8rem; opacity: 0.4; letter-spacing: 0.1em; }
.diagram-line { flex: 0.5; display: flex; justify-content: center; }
.diagram-packet { font-size: 1.2rem; animation: slide 2s ease-in-out infinite; }
@keyframes slide {
  0%, 100% { transform: translateX(-4px); }
  50% { transform: translateX(4px); }
}
.diagram-caption { margin-top: 20px; font-size: 0.8rem; opacity: 0.5; text-align: center; }

/* --- FAQ --- */
.faq { padding: 120px 0; background: var(--surface-container-low); }
.faq-list { max-width: 700px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: #fff; border-radius: var(--radius-md);
  border: 1px solid rgba(163, 172, 255, 0.1);
  overflow: hidden;
}
.faq-item summary {
  padding: 20px 24px; font-weight: 700; font-size: 1rem;
  cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between;
  transition: background 0.2s;
}
.faq-item summary:hover { background: var(--surface-container-low); }
.faq-item summary::after {
  content: '+'; font-size: 1.4rem; font-weight: 400; color: var(--outline-variant);
  transition: transform 0.3s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item p { padding: 0 24px 20px; font-size: 0.9rem; opacity: 0.65; line-height: 1.7; }

/* --- CTA --- */
.cta { padding: 120px 0; }
.cta-card {
  text-align: center; padding: 80px 40px; border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--inverse-surface), #0a1a5e);
  color: #fff;
}
.cta-card h2 { color: #fff; margin-bottom: 16px; }
.cta-card p { opacity: 0.7; margin-bottom: 32px; font-size: 1.05rem; }
.cta-form { display: flex; gap: 12px; justify-content: center; max-width: 480px; margin: 0 auto; }
.cta-form input {
  flex: 1; padding: 16px 24px; border-radius: var(--radius-xl);
  border: 1px solid rgba(255,255,255,0.15); background: rgba(255,255,255,0.08);
  color: #fff; font-family: inherit; font-size: 0.95rem;
  outline: none; transition: border-color 0.2s;
}
.cta-form input::placeholder { color: rgba(255,255,255,0.4); }
.cta-form input:focus { border-color: rgba(255,255,255,0.4); }
.cta-form .btn { background: #fff; color: var(--inverse-surface); flex-shrink: 0; }
.cta-form .btn:hover { box-shadow: 0 8px 30px rgba(255,255,255,0.2); }
.cta-note { font-size: 0.8rem; opacity: 0.4; margin-top: 16px; }

/* --- Footer --- */
.footer { padding: 80px 0 0; border-top: 1px solid rgba(163, 172, 255, 0.1); }
.footer-inner { display: grid; grid-template-columns: 1.5fr 2fr; gap: 60px; }
.footer-brand p { margin-top: 12px; font-size: 0.9rem; opacity: 0.5; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer-links h4 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; opacity: 0.4; margin-bottom: 16px; }
.footer-links a { display: block; font-size: 0.9rem; opacity: 0.6; padding: 4px 0; transition: opacity 0.2s; }
.footer-links a:hover { opacity: 1; }
.footer-bottom {
  margin-top: 48px; padding: 24px 0;
  border-top: 1px solid rgba(163, 172, 255, 0.1);
  font-size: 0.8rem; opacity: 0.4;
}

/* --- Responsive --- */
@media (max-width: 968px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-text { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .social-proof { justify-content: center; }
  .hero-visual { margin-top: 40px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .safety-grid { grid-template-columns: 1fr; }
  .safety-visual { margin-top: 40px; }
  .footer-inner { grid-template-columns: 1fr; }
  .step { grid-template-columns: auto 1fr; }
  .step-visual { display: none; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav .btn { display: none; }
  .menu-toggle { display: block; }
  .mobile-menu.open { display: flex; }
  .features-grid { grid-template-columns: 1fr; }
  .hero { padding: 130px 0 60px; min-height: auto; }
  .phone-frame { width: 240px; }
  .floating-card { display: none; }
  .cta-form { flex-direction: column; }
  .cta-card { padding: 48px 24px; }
  .safety-diagram { flex-direction: column; }
  .diagram-line { transform: rotate(90deg); }
  .step { grid-template-columns: 1fr; text-align: center; }
  .step-number { margin: 0 auto; }
}

/* --- Animations --- */
@media (prefers-reduced-motion: no-preference) {
  .feature-card,
  .step,
  .faq-item,
  .safety-list li {
    opacity: 0; transform: translateY(20px);
    animation: fadeUp 0.6s ease forwards;
  }
  .feature-card:nth-child(1) { animation-delay: 0.05s; }
  .feature-card:nth-child(2) { animation-delay: 0.1s; }
  .feature-card:nth-child(3) { animation-delay: 0.15s; }
  .feature-card:nth-child(4) { animation-delay: 0.2s; }
  .feature-card:nth-child(5) { animation-delay: 0.25s; }
  .feature-card:nth-child(6) { animation-delay: 0.3s; }
  .step:nth-child(1) { animation-delay: 0.05s; }
  .step:nth-child(2) { animation-delay: 0.15s; }
  .step:nth-child(3) { animation-delay: 0.25s; }
  .safety-list li:nth-child(1) { animation-delay: 0.05s; }
  .safety-list li:nth-child(2) { animation-delay: 0.1s; }
  .safety-list li:nth-child(3) { animation-delay: 0.15s; }
  .safety-list li:nth-child(4) { animation-delay: 0.2s; }
}

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}