@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=DM+Sans:ital,wght@0,400;0,500;1,400&display=swap');

:root {
  --bg: #0a0a0f;
  --bg-elevated: #13131a;
  --bg-card: #1a1a24;
  --fg: #e8e8ed;
  --fg-muted: #8b8b9e;
  --accent: #4ade80;
  --accent-dim: rgba(74, 222, 128, 0.12);
  --accent-glow: rgba(74, 222, 128, 0.25);
  --border: rgba(255, 255, 255, 0.06);
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── NAV ── */
.nav {
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}
.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--fg);
  letter-spacing: -0.02em;
}
.nav-logo span {
  color: var(--accent);
}
.nav-tag {
  font-size: 0.75rem;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 100px;
  font-family: var(--font-body);
}

/* ── HERO ── */
.hero {
  padding: 120px 0 80px;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.3;
}
.hero-eyebrow {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 24px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--fg);
  max-width: 800px;
  margin-bottom: 28px;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
}
.hero-sub {
  font-size: 1.2rem;
  color: var(--fg-muted);
  max-width: 560px;
  line-height: 1.7;
}

/* ── STAT BAR ── */
.stat-bar {
  padding: 60px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stat-bar .container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
}
.stat-item .stat-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-item .stat-label {
  font-size: 0.9rem;
  color: var(--fg-muted);
}

/* ── FEATURES ── */
.features {
  padding: 100px 0;
}
.features-header {
  margin-bottom: 64px;
}
.features-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.features-header p {
  color: var(--fg-muted);
  font-size: 1.1rem;
  max-width: 500px;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 36px;
  transition: border-color 0.2s;
}
.feature-card:hover {
  border-color: rgba(74, 222, 128, 0.2);
}
.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-dim);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 1.4rem;
}
.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.feature-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ── COMPARISON ── */
.comparison {
  padding: 100px 0;
  border-top: 1px solid var(--border);
}
.comparison h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
  text-align: center;
}
.comparison-table {
  max-width: 700px;
  margin: 0 auto;
}
.comparison-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.comparison-row:last-child {
  border-bottom: none;
}
.comp-label {
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-bottom: 4px;
}
.comp-old {
  color: var(--fg-muted);
  font-size: 1.1rem;
}
.comp-new {
  color: var(--accent);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
}

/* ── CLOSING ── */
.closing {
  padding: 120px 0 80px;
  text-align: center;
  position: relative;
}
.closing::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.15;
}
.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.closing p {
  color: var(--fg-muted);
  font-size: 1.1rem;
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── DEMO FORM ── */
.demo {
  padding: 100px 0;
  border-top: 1px solid var(--border);
  position: relative;
}
.demo::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.12;
}
.demo-header {
  text-align: center;
  margin-bottom: 56px;
}
.demo-eyebrow {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 16px;
}
.demo-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.demo-sub {
  color: var(--fg-muted);
  font-size: 1.05rem;
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
}
.demo-card {
  max-width: 680px;
  margin: 0 auto;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px;
}
.demo-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.demo-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}
.demo-field label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--fg);
  font-family: var(--font-display);
}
.demo-optional {
  font-weight: 400;
  color: var(--fg-muted);
  font-family: var(--font-body);
}
.demo-field input,
.demo-field textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  resize: vertical;
}
.demo-field input::placeholder,
.demo-field textarea::placeholder {
  color: var(--fg-muted);
  opacity: 0.6;
}
.demo-field input:focus,
.demo-field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.demo-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 8px;
  padding: 12px 16px;
  color: #f87171;
  font-size: 0.875rem;
  margin-bottom: 20px;
}
.demo-btn {
  width: 100%;
  background: var(--accent);
  color: #0a0f0a;
  border: none;
  border-radius: 10px;
  padding: 14px 24px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
}
.demo-btn:hover:not(:disabled) {
  opacity: 0.9;
  transform: translateY(-1px);
}
.demo-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
.demo-btn-spinner {
  letter-spacing: 4px;
  animation: pulse 1s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}
.demo-success {
  text-align: center;
  padding: 16px 0;
}
.demo-success-icon {
  width: 56px;
  height: 56px;
  background: var(--accent-dim);
  border: 1px solid rgba(74, 222, 128, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent);
  margin: 0 auto 24px;
}
.demo-success h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
  color: var(--fg);
}
.demo-success p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  max-width: 440px;
  margin: 0 auto 28px;
}
.demo-reset-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 20px;
  color: var(--fg-muted);
  font-family: var(--font-body);
  font-size: 0.875rem;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.demo-reset-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.demo-note {
  text-align: center;
  font-size: 0.82rem;
  color: var(--fg-muted);
  opacity: 0.65;
  margin-top: 24px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ── FOOTER ── */
footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}
footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--fg-muted);
}
.footer-built {
  font-size: 0.8rem;
  color: var(--fg-muted);
  opacity: 0.6;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .hero { padding: 80px 0 60px; }
  .stat-bar .container { grid-template-columns: 1fr; gap: 32px; }
  .features-grid { grid-template-columns: 1fr; }
  .comparison-row { grid-template-columns: 1fr; gap: 8px; }
  .closing { padding: 80px 0 60px; }
  footer .container { flex-direction: column; gap: 12px; text-align: center; }
  .demo-form-row { grid-template-columns: 1fr; }
  .demo-card { padding: 28px 24px; }
}