:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #16161f;
  --fg: #e4e4eb;
  --fg-muted: #8888a0;
  --fg-dim: #55556a;
  --accent: #ff2d55;
  --accent-glow: rgba(255, 45, 85, 0.15);
  --accent-secondary: #00e5a0;
  --border: #22222e;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

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

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 2rem 4rem;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.3;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 100%);
}

.hero-content {
  position: relative;
  max-width: 800px;
  text-align: center;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(255, 45, 85, 0.25);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.accent { color: var(--accent); }

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 600px;
  margin: 0 auto 3rem;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.stat { text-align: center; }

.stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--accent-secondary);
  margin-bottom: 0.3rem;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ---- PROBLEM ---- */
.problem {
  padding: 6rem 2rem;
  background: var(--bg-elevated);
}

.problem-content {
  max-width: 1000px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 3rem;
  text-align: center;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: border-color 0.2s;
}

.problem-card:hover {
  border-color: rgba(255, 45, 85, 0.3);
}

.problem-icon {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: 10px;
  color: var(--accent);
}

.problem-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--fg);
}

.problem-card p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ---- FEATURES ---- */
.features {
  padding: 6rem 2rem;
}

.features-content {
  max-width: 700px;
  margin: 0 auto;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.feature-row {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
}

.feature-row:last-child {
  border-bottom: none;
}

.feature-number {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  min-width: 32px;
  padding-top: 0.15rem;
}

.feature-detail h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-detail p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ---- HOW IT WORKS ---- */
.how-it-works {
  padding: 6rem 2rem;
  background: var(--bg-elevated);
}

.hiw-content {
  max-width: 600px;
  margin: 0 auto;
}

.hiw-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.hiw-step {
  display: flex;
  gap: 1.5rem;
  padding-bottom: 2.5rem;
}

.hiw-step:last-child { padding-bottom: 0; }

.step-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 20px;
}

.step-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
  flex-shrink: 0;
}

.step-line {
  width: 2px;
  flex-grow: 1;
  background: linear-gradient(to bottom, var(--accent), var(--border));
  margin-top: 0.5rem;
}

.step-info h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.step-info p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ---- CLOSING ---- */
.closing {
  padding: 8rem 2rem;
  text-align: center;
  position: relative;
}

.closing::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 45, 85, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.closing-content {
  position: relative;
  max-width: 650px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

.closing-sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* ---- FOOTER ---- */
.site-footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-brand {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
  color: var(--fg);
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--fg-dim);
}

/* ---- CTA BUTTON ---- */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.8rem 2rem;
  border-radius: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.15s;
  box-shadow: 0 0 24px rgba(255,45,85,0.3);
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }

/* ---- LANDING NAV ---- */
.landing-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem; height: 60px;
  background: rgba(10,10,15,0.9); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.landing-nav-brand {
  font-weight: 700; font-size: 1.1rem; color: var(--fg);
  text-decoration: none; display: flex; align-items: center; gap: 0.5rem;
}
.landing-nav-dot { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 8px var(--accent); }
.landing-nav-link {
  background: var(--accent); color: #fff; padding: 0.4rem 1.1rem;
  border-radius: 8px; font-size: 0.875rem; font-weight: 600;
  text-decoration: none; transition: opacity 0.2s;
}
.landing-nav-link:hover { opacity: 0.85; }

body.has-nav .hero { padding-top: 8rem; }

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .hero { padding: 4rem 1.5rem 3rem; }
  .hero-stats { gap: 1.5rem; }
  .stat-divider { display: none; }
  .stat-num { font-size: 1.3rem; }
  .problem, .features, .how-it-works { padding: 4rem 1.5rem; }
  .feature-row { flex-direction: column; gap: 0.5rem; }
  .feature-number { min-width: auto; }
  .closing { padding: 5rem 1.5rem; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.9rem; }
  .hero-sub { font-size: 1rem; }
  .hero-stats { flex-direction: column; gap: 1.5rem; }
  .problem-grid { grid-template-columns: 1fr; }
}