:root {
  --bg-dark: #0a0f1c;
  --bg-card: #111827;
  --bg-accent: #0d1a2e;
  --fg: #e2e8f0;
  --fg-muted: #94a3b8;
  --fg-dim: #64748b;
  --accent: #f59e0b;
  --accent-glow: rgba(245, 158, 11, 0.15);
  --accent-secondary: #22d3ee;
  --border: rgba(148, 163, 184, 0.1);
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

html { scroll-behavior: smooth; }

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

/* ── HERO ── */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 6rem 2rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.hero-badge {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 2rem;
  padding: 0.4rem 1rem;
  background: var(--accent-glow);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: 2px;
  display: inline-block;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 1.5rem;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 3.5rem;
}

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

.stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: #fff;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--fg-dim);
  letter-spacing: 0.02em;
}

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

.hero-visual {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  width: 200px;
  height: 300px;
}

.route-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--accent), var(--accent-secondary), transparent);
}

.route-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.dot-1 { top: 10%; }
.dot-2 { top: 50%; background: var(--accent-secondary); box-shadow: 0 0 20px rgba(34, 211, 238, 0.3); }
.dot-3 { top: 90%; }

/* ── PROBLEM ── */
.problem {
  padding: 6rem 2rem;
  background: var(--bg-accent);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.problem-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 3rem;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.problem-card {
  padding: 2rem;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.problem-icon {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 1.25rem;
  letter-spacing: 0.05em;
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

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

/* ── FEATURES ── */
.features {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-rows {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.feature-row {
  display: flex;
  align-items: flex-start;
  gap: 2.5rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
}

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

.feature-number {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-secondary);
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: 4px;
  flex-shrink: 0;
}

.feature-content h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.5rem;
}

.feature-content p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.65;
  max-width: 700px;
}

/* ── CORRIDOR ── */
.corridor {
  padding: 6rem 2rem;
  background: var(--bg-accent);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.corridor-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.corridor-text h3 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 1.25rem;
  line-height: 1.2;
}

.corridor-text p {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.corridor-visual {
  display: flex;
  justify-content: center;
}

.corridor-line {
  position: relative;
  width: 3px;
  height: 250px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-secondary));
  border-radius: 2px;
}

.corridor-point {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.corridor-point::before {
  content: '';
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-accent);
  flex-shrink: 0;
}

.corridor-point span {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fg);
  white-space: nowrap;
  position: absolute;
  left: 2rem;
}

.point-top { top: 0; }
.point-top::before { background: var(--accent); }
.point-mid { top: 50%; transform: translate(-50%, -50%); }
.point-mid::before { background: #fff; }
.point-bottom { bottom: 0; }
.point-bottom::before { background: var(--accent-secondary); }

/* ── CLOSING ── */
.closing {
  padding: 8rem 2rem;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 600;
  color: #fff;
  line-height: 1.35;
  margin-bottom: 1.5rem;
}

.closing-sub {
  font-size: 1.1rem;
  color: var(--accent);
  font-family: var(--font-display);
  font-weight: 500;
  margin-bottom: 3rem;
}

/* ── CLOSING SIGNUP FORM ── */
.closing-form {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.75rem;
}

.form-row input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}

.form-row input::placeholder {
  color: var(--fg-dim);
}

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

.form-row input:nth-child(3) {
  grid-column: span 1;
}

.form-submit {
  background: var(--accent);
  color: #000;
  border: none;
  padding: 0.875rem;
  border-radius: 6px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: opacity 0.2s;
}

.form-submit:hover {
  opacity: 0.85;
}

.form-note {
  font-size: 0.8rem;
  color: var(--fg-dim);
  margin: 0;
}

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

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
}

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

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: 4rem 1.5rem 3rem;
  }

  .hero-visual {
    display: none;
  }

  .hero-stats {
    gap: 1.25rem;
  }

  .stat-divider {
    display: none;
  }

  .stat-num {
    font-size: 1.4rem;
  }

  .problem-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .problem, .features, .corridor {
    padding: 4rem 1.5rem;
  }

  .feature-row {
    flex-direction: column;
    gap: 1rem;
    padding: 2rem 0;
  }

  .corridor-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .corridor-visual {
    justify-content: flex-start;
    padding-left: 2rem;
  }

  .closing {
    padding: 5rem 1.5rem;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero-sub {
    font-size: 1rem;
  }

  .problem-card {
    padding: 1.5rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}