:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #93c5fd;
  --secondary: #f8fafc;
  --accent: #10b981;
  --accent-dark: #059669;
  --text: #1f2937;
  --text-light: #6b7280;
  --white: #ffffff;
  --border: #e5e7eb;
  --shadow: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -1px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -2px rgba(0,0,0,.05);
  --transition: all 0.3s ease;
}

/* Reset / Base */
* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family:'Inter',sans-serif;
  color:var(--text);
  line-height:1.6;
  background:var(--white);
  overflow-x:hidden;
}
h1,h2,h3,h4 { font-weight:700; line-height:1.2; margin-bottom:1rem; }
h1 { font-size:2.5rem; }
h2 { font-size:2rem; }
h3 { font-size:1.5rem; }
p { margin-bottom:1.5rem; }
a { text-decoration:none; color:var(--primary); transition:var(--transition); }
a:hover { color:var(--primary-dark); }
.container { width:100%; max-width:1200px; margin:0 auto; padding:0 1.5rem; }
.btn { display:inline-block; padding:.75rem 1.5rem; border-radius:.375rem; font-weight:600; cursor:pointer; transition:var(--transition); text-align:center; }
.btn-primary { background:var(--primary); color:var(--white); border:none; }
.btn-primary:hover { background:var(--primary-dark); transform:translateY(-2px); box-shadow:var(--shadow-lg); }
.btn-outline { background:transparent; color:var(--primary); border:2px solid var(--primary); }
.btn-outline:hover { background:var(--primary); color:var(--white); }
.btn-light { background:var(--white); color:var(--primary); border:1px solid var(--border); }
.btn-light:hover { background:#f3f4f6; transform:translateY(-2px); }
.section { padding:5rem 0; }
.section-title { text-align:center; margin-bottom:3rem; }

/* Header */
.site-header {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  padding: 0.5rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1.5rem;
}
.logo {
  display: flex;
  align-items: center;
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--text);
  transition: transform 0.3s ease;
}
.logo:hover {
  transform: translateY(-1px);
}
.logo svg {
  margin-right: 0.5rem;
  transition: transform 0.3s ease;
}
.logo:hover svg {
  transform: rotate(5deg);
}
.nav-desktop {
  display: flex;
  align-items: center;
}
.nav-desktop .menu {
  display: flex;
  list-style: none;
  gap: 2rem;
  margin-right: 2rem;
}
.nav-link {
  color: var(--text);
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
}
.nav-link:hover::after {
  width: 100%;
}
.cta-desktop {
  display: flex;
  gap: 0.75rem;
}
.hamburger {
  display: none;
  padding: 0.5rem;
  cursor: pointer;
  background: transparent;
  border: none;
  outline: none;
}
.hamburger-box {
  width: 24px;
  height: 18px;
  display: inline-block;
  position: relative;
}
.hamburger-inner, .hamburger-inner::before, .hamburger-inner::after {
  width: 24px;
  height: 2px;
  background-color: var(--text);
  border-radius: 2px;
  position: absolute;
  transition: transform 0.3s ease;
}
.hamburger-inner::before, .hamburger-inner::after {
  content: "";
  display: block;
}
.hamburger-inner::before {
  top: -6px;
}
.hamburger-inner::after {
  bottom: -6px;
}
.nav-mobile {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 400px;
  height: 100vh;
  background: var(--white);
  box-shadow: var(--shadow-lg);
  transition: right 0.4s ease;
  z-index: 1001;
  padding: 2rem;
  display: flex;
  flex-direction: column;
}
.nav-mobile.open {
  right: 0;
}
.nav-mobile .menu {
  list-style: none;
  margin-top: 2rem;
}
.nav-mobile .menu li {
  margin-bottom: 1rem;
  opacity: 0;
  transform: translateX(20px);
  transition: all 0.4s ease;
}
.nav-mobile.open .menu li {
  opacity: 1;
  transform: translateX(0);
}
.nav-mobile.open .menu li:nth-child(1) { transition-delay: 0.1s; }
.nav-mobile.open .menu li:nth-child(2) { transition-delay: 0.15s; }
.nav-mobile.open .menu li:nth-child(3) { transition-delay: 0.2s; }
.nav-mobile.open .menu li:nth-child(4) { transition-delay: 0.25s; }
.close-menu {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text);
  transition: color 0.3s ease;
}
.close-menu:hover {
  color: var(--primary);
}
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
  z-index: 1000;
}
.overlay.open {
  opacity: 1;
  visibility: visible;
}

/* Hero Section */
.hero { padding:7rem 0 4rem; background:linear-gradient(180deg,#f7fbff 0%,#eef6ff 100%); }
.hero-grid { display:grid; grid-template-columns:1fr; gap:2rem; align-items:center; }
.kicker { font-weight:700; font-size:.9rem; color:var(--primary); margin-bottom:1rem; }
.hero-headline { font-size:2.2rem; font-weight:800; background:linear-gradient(90deg,#06102a,#2563eb); -webkit-background-clip:text; -webkit-text-fill-color:transparent; margin-bottom:1rem; }
.hero-lead { color:var(--text-light); margin-bottom:1.25rem; max-width:52ch; }
.hero-form { display:flex; gap:.75rem; max-width:560px; margin-bottom:1rem; }
.hero-email { flex:1; padding:.85rem 1rem; border-radius:12px; border:1px solid var(--border); }
.hero-cta-row { display:flex; gap:.75rem; margin-bottom:1rem; flex-wrap:wrap; }
.hero-trust { display:flex; align-items:center; gap:.75rem; color:var(--text-light); }
.hero-trust-logos { display:flex; gap:.5rem; flex-wrap:wrap; }
.trust-logo { background:rgba(0,0,0,0.05); padding:.25rem .6rem; border-radius:8px; font-weight:600; font-size:.85rem; }
.hero-right { display:flex; justify-content:center; }
.mockup { width:100%; max-width:500px; border-radius:16px; border:1px solid var(--border); box-shadow:var(--shadow-lg); padding:1rem; background:#fff; }
.mockup-header { display:flex; gap:8px; margin-bottom:.5rem; }
.mockup-header .dot { width:10px; height:10px; border-radius:50%; background:#d1d5db; }
.mockup-cards { position:relative; height:240px; }
.card { position:absolute; left:0; right:0; padding:1rem; background:#fff; border-radius:12px; box-shadow:var(--shadow); border:1px solid var(--border); transition:transform .5s, opacity .3s; }
.card-row { display:flex; justify-content:space-between; margin-bottom:.4rem; }
.card-sender { font-weight:600; }
.card-time { color:var(--text-light); font-size:.85rem; }
.card-sub { font-weight:600; margin-bottom:.4rem; }
.card-preview { color:var(--text-light); font-size:.9rem; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.card-1 { transform:translateY(0) scale(1); z-index:3; }
.card-2 { transform:translateY(20px) scale(.97); z-index:2; }
.card-3 { transform:translateY(40px) scale(.95); z-index:1; }
.mockup-footer { display:flex; justify-content:space-between; margin-top:1rem; border-top:1px solid var(--border); padding-top:.5rem; }
.metric { text-align:center; }
.metric-value { font-weight:700; color:var(--primary); }
.metric-label { font-size:.85rem; color:var(--text-light); }

/* Services Section */
.services {
  background: var(--white);
}
.services-intro {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 3rem;
}
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
.service-card {
  background: var(--secondary);
  border-radius: 12px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}
.service-icon {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}
.service-cta {
  margin-top: auto;
  padding-top: 1rem;
  color: var(--primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Stats Section */
.stats {
  background: linear-gradient(to right, var(--primary), var(--primary-dark));
  color: var(--white);
  padding: 4rem 0;
  text-align: center;
}
.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
.stat-item {
  padding: 1.5rem;
}
.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  display: block;
}
.stat-label {
  font-size: 1rem;
  opacity: 0.9;
}

/* Features Section */
.features { background:var(--secondary); }
.features-grid { display:grid; grid-template-columns:1fr; gap:2rem; }
.feature-card { background:#fff; border-radius:12px; padding:2rem; box-shadow:var(--shadow); transition:var(--transition); }
.feature-card:hover { transform:translateY(-5px); box-shadow:var(--shadow-lg); }
.feature-icon { width:60px; height:60px; border-radius:12px; background:var(--primary-light); color:var(--primary); display:flex; align-items:center; justify-content:center; margin-bottom:1rem; font-size:1.5rem; }

/* Detailed Features Section */
.detailed-features {
  background: var(--white);
}
.feature-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
  margin-bottom: 4rem;
}
.feature-detail:last-child {
  margin-bottom: 0;
}
.feature-content {
  order: 2;
}
.feature-visual {
  order: 1;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: #f9fafb;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-weight: 600;
}
.feature-list {
  list-style: none;
  margin: 1.5rem 0;
}
.feature-list li {
  margin-bottom: 0.75rem;
  padding-left: 1.5rem;
  position: relative;
}
.feature-list li:before {
  content: "✓";
  color: var(--accent);
  position: absolute;
  left: 0;
  font-weight: bold;
}

/* How It Works Section */
.how-it-works { background: var(--secondary); }
.steps { display:flex; flex-direction:column; gap:2rem; }
.step { text-align:center; }
.step-number { width:60px; height:60px; border-radius:50%; background:linear-gradient(to bottom right,var(--primary),var(--primary-dark)); color:#fff; display:flex; align-items:center; justify-content:center; font-weight:700; font-size:1.5rem; margin:0 auto 1rem; }

/* Use Cases Section */
.use-cases {
  background: var(--white);
}
.use-cases-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.use-case-tab {
  padding: 0.75rem 1.5rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
}
.use-case-tab.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.use-case-content {
  display: none;
}
.use-case-content.active {
  display: block;
}
.use-case-card {
  background: var(--white);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow);
}

/* Testimonials Section */
.testimonials { background: var(--secondary); }
.testimonial-wrap { display:flex; align-items:center; gap:1rem; position:relative; }
.test-prev, .test-next { background:var(--white); border:1px solid var(--border); border-radius:50%; width:40px; height:40px; cursor:pointer; transition:var(--transition); }
.test-prev:hover, .test-next:hover { background:var(--primary); color:#fff; }
.testimonial-viewport { overflow:hidden; flex:1; }
.testimonial-track { display:flex; transition:transform .5s ease; }
.testimonial-slide { flex:0 0 100%; padding:1rem; }
.testimonial-card { background:#fff; border-radius:12px; padding:2rem; box-shadow:var(--shadow); border:1px solid var(--border); position:relative; }
.quote-mark { font-size:3rem; color:var(--primary-light); position:absolute; top:10px; left:10px; }
.testimonial-text { font-size:1.1rem; margin:1.5rem 0; color:var(--text); }
.testimonial-meta { display:flex; align-items:center; gap:1rem; }
.author-avatar { width:50px; height:50px; border-radius:50%; background:linear-gradient(to bottom right,var(--primary-light),var(--primary)); color:#fff; display:flex; align-items:center; justify-content:center; font-weight:700; }
.author-info { flex:1; }
.author-name { font-weight:700; }
.author-role { font-size:.9rem; color:var(--text-light); }
.testimonial-dots { display:flex; justify-content:center; gap:.5rem; margin-top:1rem; }
.testimonial-dots button { width:10px; height:10px; border-radius:50%; border:none; background:#d1d5db; cursor:pointer; }
.testimonial-dots button.active { background:var(--primary); }

/* Integrations Section */
.integrations-enhanced {
  background: var(--white);
}
.integrations-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.integration-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition);
}
.integration-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.integration-icon {
  width: 50px;
  height: 50px;
  border-radius: 8px;
  background: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--primary);
  flex-shrink: 0;
}
.integration-info {
  flex: 1;
}
.integration-name {
  font-weight: 600;
  margin-bottom: 0.25rem;
}
.integration-desc {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* Final CTA */
.cta-strip {
  background:linear-gradient(to right,var(--primary),var(--primary-dark));
  color:#fff;
  padding:4rem 0;
  text-align:center;
}
.cta-strip h2 { margin-bottom:1rem; }
.cta-strip p { margin-bottom:2rem; opacity:.9; }

/* Footer */
footer {
  background:#111827;
  color:#fff;
  padding:4rem 0 2rem;
}
.footer-grid {
  display:grid;
  grid-template-columns:1fr;
  gap:2rem;
  margin-bottom:2rem;
}
.footer-brand .logo {
  display:flex;
  align-items:center;
  font-weight:800;
  font-size:1.25rem;
  color:#fff;
  margin-bottom:1rem;
}
.footer-brand .logo svg { margin-right:.5rem; }
.footer-tagline { color:#9ca3af; font-size:.95rem; max-width:280px; }
.footer-column h3 { margin-bottom:1rem; font-size:1.1rem; font-weight:600; }
.footer-links { list-style:none; }
.footer-links li { margin-bottom:.5rem; }
.footer-links a { color:#d1d5db; transition:var(--transition); }
.footer-links a:hover { color:#fff; }
.newsletter-form {
  display:flex;
  margin-top:.75rem;
  background:#1f2937;
  border-radius:.5rem;
  overflow:hidden;
}
.newsletter-input {
  flex:1;
  padding:.75rem 1rem;
  border:none;
  background:transparent;
  color:#fff;
}
.newsletter-input::placeholder { color:#9ca3af; }
.newsletter-btn {
  background:var(--primary);
  border:none;
  padding:0 1rem;
  color:#fff;
  cursor:pointer;
  transition:var(--transition);
}
.newsletter-btn:hover { background:var(--primary-dark); }
.footer-bottom {
  border-top:1px solid #1f2937;
  padding-top:1rem;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:.5rem;
  font-size:.9rem;
  color:#9ca3af;
}
.footer-bottom-links {
  display:flex;
  gap:.5rem;
}
.footer-bottom-links a { color:#9ca3af; }
.footer-bottom-links a:hover { color:#fff; }

/* Responsive */
@media (max-width: 768px) {
  .nav-desktop {
    display: none;
  }
  .hamburger {
    display: block;
  }
  .header-container {
    padding: 0 1rem;
  }
}
@media(min-width:768px){
  .hero-grid{grid-template-columns:1fr 1fr;}
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 2fr); }
  .features-grid{grid-template-columns:repeat(2,1fr);}
  .steps{flex-direction:row;}
  .feature-detail { grid-template-columns: 1fr 1fr; }
  .feature-detail.reverse .feature-content { order: 2; }
  .feature-detail.reverse .feature-visual { order: 1; }
  .integrations-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns:repeat(2,1fr); }
  .footer-bottom { flex-direction:row; justify-content:space-between; }
}
@media(min-width:1024px){
  .services-grid { grid-template-columns: repeat(3, 1fr); }
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .features-grid{grid-template-columns:repeat(3,1fr);}
  .integrations-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid{grid-template-columns:repeat(4,1fr);}
}