:root {
  --bg: #08090d;
  --bg-soft: #0f1117;
  --card: #14161f;
  --card-border: #23263280;
  --text: #eef0f6;
  --text-dim: #a6a9bb;
  --text-faint: #6c6f82;
  --accent: #7c5cff;
  --accent-2: #22d3c8;
  --accent-grad: linear-gradient(135deg, #7c5cff 0%, #22d3c8 100%);
  --radius: 16px;
  --shadow: 0 8px 30px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.accent {
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.bg-glow {
  position: fixed;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 1200px;
  height: 800px;
  background: radial-gradient(ellipse at center, rgba(124,92,255,0.25) 0%, rgba(34,211,200,0.08) 40%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(8,9,13,0.7);
  border-bottom: 1px solid var(--card-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--text);
}

.logo-mark {
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: 1.3rem;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--text); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.btn-primary {
  background: var(--accent-grad);
  color: #0a0a0f;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(124,92,255,0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--card-border);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-small {
  padding: 9px 20px;
  font-size: 0.88rem;
}

/* Hero */
.hero {
  position: relative;
  z-index: 1;
  padding: 90px 24px 40px;
  text-align: center;
}

.badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--card-border);
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 24px;
  letter-spacing: -0.02em;
}

.hero-sub {
  max-width: 640px;
  margin: 0 auto 36px;
  color: var(--text-dim);
  font-size: 1.1rem;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 56px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats div {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  max-width: 160px;
}

.hero-stats strong {
  font-size: 1.8rem;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-stats span {
  font-size: 0.85rem;
  color: var(--text-faint);
  text-align: center;
}

/* Mock chat window */
.hero-mock {
  max-width: 720px;
  margin: 0 auto;
}

.mock-window {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  text-align: left;
}

.mock-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--card-border);
  background: var(--bg-soft);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.mock-title {
  margin-left: 10px;
  font-size: 0.85rem;
  color: var(--text-faint);
}

.mock-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.msg {
  padding: 14px 18px;
  border-radius: 14px;
  font-size: 0.92rem;
  max-width: 90%;
}

.msg-user {
  align-self: flex-end;
  background: var(--accent-grad);
  color: #0a0a0f;
  font-weight: 500;
}

.msg-ai {
  align-self: flex-start;
  background: var(--bg-soft);
  border: 1px solid var(--card-border);
  color: var(--text-dim);
}

.msg-ai strong {
  color: var(--text);
}

.msg-ai ol {
  margin: 10px 0;
  padding-left: 20px;
}

/* Trust */
.trust {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 60px 24px;
}

.trust-label {
  color: var(--text-faint);
  font-size: 0.9rem;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.trust-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.trust-tags span {
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--card-border);
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* Section head */
.section-head {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 48px;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  margin: 0 0 12px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.section-head p {
  color: var(--text-dim);
}

/* Features */
.features {
  position: relative;
  z-index: 1;
  padding: 60px 24px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 30px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.feature-card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.92rem;
}

/* How it works */
.how {
  position: relative;
  z-index: 1;
  padding: 60px 24px;
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 200px;
  max-width: 280px;
  text-align: center;
}

.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent-grad);
  color: #0a0a0f;
  font-weight: 800;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.step h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.step p {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin: 0;
}

.step-line {
  height: 2px;
  flex: 0 0 60px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  margin-top: 24px;
  opacity: 0.4;
}

/* Use cases */
.usecases {
  position: relative;
  z-index: 1;
  padding: 60px 24px;
}

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.usecase {
  background: var(--bg-soft);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}

.usecase-emoji {
  font-size: 1.8rem;
  display: block;
  margin-bottom: 10px;
}

.usecase h4 {
  margin: 0 0 6px;
  font-size: 1rem;
}

.usecase p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.88rem;
}

/* Waitlist */
.waitlist {
  position: relative;
  z-index: 1;
  padding: 70px 24px;
}

.waitlist-card {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 48px 40px;
  box-shadow: var(--shadow);
}

.waitlist-card h2 {
  margin: 0 0 12px;
  font-size: 1.8rem;
}

.waitlist-card p {
  color: var(--text-dim);
  margin: 0 0 28px;
}

.waitlist-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.waitlist-form input {
  flex: 1;
  min-width: 220px;
  padding: 13px 18px;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  background: var(--bg-soft);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
}

.waitlist-form input:focus {
  border-color: var(--accent);
}

.form-msg {
  min-height: 20px;
  margin: 16px 0 0;
  font-size: 0.9rem;
  font-weight: 600;
}

.form-msg.success { color: var(--accent-2); }
.form-msg.error { color: #ff6b6b; }

.waitlist-note {
  margin: 12px 0 0 !important;
  font-size: 0.8rem !important;
  color: var(--text-faint) !important;
  font-weight: 400 !important;
}

/* FAQ */
.faq {
  position: relative;
  z-index: 1;
  padding: 60px 24px 100px;
}

.faq-list {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

details {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 18px 22px;
}

summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

summary::-webkit-details-marker { display: none; }

summary::after {
  content: "+";
  float: right;
  color: var(--accent);
  font-weight: 700;
}

details[open] summary::after {
  content: "−";
}

details p {
  margin: 14px 0 0;
  color: var(--text-dim);
  font-size: 0.92rem;
}

/* Footer */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--card-border);
  padding: 48px 24px 24px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 32px;
}

.footer-brand {
  font-weight: 700;
}

.footer-brand p {
  margin: 8px 0 0;
  color: var(--text-faint);
  font-weight: 400;
  font-size: 0.88rem;
}

.footer-links {
  display: flex;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-links a:hover { color: var(--text); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  color: var(--text-faint);
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 8px;
}

/* Responsive */
@media (max-width: 860px) {
  .nav-links { display: none; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .usecase-grid { grid-template-columns: repeat(2, 1fr); }
  .step-line { display: none; }
}

@media (max-width: 560px) {
  .feature-grid { grid-template-columns: 1fr; }
  .usecase-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 64px; }
  .waitlist-card { padding: 36px 24px; }
}