:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --fg: #f0f0f5;
  --fg-muted: #8a8a9a;
  --accent: #4ade80;
  --accent-glow: rgba(74, 222, 128, 0.15);
  --border: rgba(255, 255, 255, 0.06);
  --radius: 12px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', 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;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.2;
}

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

/* Hero */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  background: radial-gradient(ellipse at 50% 0%, var(--accent-glow) 0%, transparent 60%);
  text-align: center;
}

.hero-inner {
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--accent);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--fg-muted);
  max-width: 600px;
  margin: 0 auto 48px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-top: 4px;
}

/* Problem */
.problem {
  padding: 120px 24px;
  background: var(--bg);
}

.problem-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 64px;
  text-align: center;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.problem-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
}

.problem-icon {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 20px;
  opacity: 0.8;
}

.problem-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

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

/* Services */
.services {
  padding: 120px 24px;
  background: var(--bg-elevated);
}

.services-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.services h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 64px;
  text-align: center;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px 48px;
}

.service-item {
  position: relative;
  padding-left: 0;
}

.service-num {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 12px;
  opacity: 0.7;
}

.service-item h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.service-item p {
  color: var(--fg-muted);
  font-size: 0.92rem;
}

/* How */
.how {
  padding: 120px 24px;
  background: var(--bg);
}

.how-inner {
  max-width: 700px;
  margin: 0 auto;
}

.how h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 64px;
  text-align: center;
}

.how-steps {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.step {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.step-marker {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent);
}

.step-content h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.step-content p {
  color: var(--fg-muted);
  font-size: 0.92rem;
}

/* Closing */
.closing {
  padding: 140px 24px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 100%, var(--accent-glow) 0%, transparent 50%);
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 24px;
}

.closing-text {
  color: var(--fg-muted);
  font-size: 1.1rem;
  margin-bottom: 40px;
}

.closing-tagline {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--accent);
}

/* Hero CTA */
.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 56px;
}

.hero-btn {
  display: inline-block;
  padding: 16px 36px;
  background: var(--accent);
  color: #0a0a0f;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius);
  letter-spacing: -0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 0 32px var(--accent-glow);
}

.hero-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 40px rgba(74, 222, 128, 0.35);
}

.hero-cta-note {
  font-size: 0.82rem;
  color: var(--fg-muted);
}

/* Demo Section */
.demo {
  padding: 80px 24px 120px;
  background: var(--bg-elevated);
  position: relative;
}

.demo::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 80px;
  background: linear-gradient(to bottom, transparent, var(--border));
}

.demo-inner {
  max-width: 900px;
  margin: 0 auto;
}

.demo-header {
  text-align: center;
  margin-bottom: 56px;
}

.demo-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-top: 16px;
  margin-bottom: 16px;
}

.demo-sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 560px;
  margin: 0 auto;
}

.demo-card {
  background: #0d0d14;
  border: 1px solid rgba(74, 222, 128, 0.15);
  border-radius: 16px;
  padding: 40px 48px;
  box-shadow: 0 0 60px rgba(74, 222, 128, 0.04);
}

.demo-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group--wide {
  grid-column: 1 / -1;
  max-width: 50%;
}

.form-group label {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.form-group input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s ease;
  -webkit-appearance: none;
}

.form-group input::placeholder {
  color: #444455;
}

.form-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.demo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 16px;
  margin-top: 8px;
  background: var(--accent);
  color: #0a0a0f;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
  box-shadow: 0 0 24px var(--accent-glow);
}

.demo-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 32px rgba(74, 222, 128, 0.3);
}

.demo-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.demo-disclaimer {
  text-align: center;
  color: var(--fg-muted);
  font-size: 0.8rem;
  margin-top: 12px;
}

/* Spinner */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(0,0,0,0.3);
  border-top-color: #0a0a0f;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-right: 8px;
  vertical-align: middle;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.demo-btn-spinner {
  display: inline-flex;
  align-items: center;
}

/* Results */
.demo-results {
  margin-top: 56px;
}

.results-header {
  text-align: center;
  margin-bottom: 40px;
}

.results-badge {
  display: inline-block;
  padding: 5px 14px;
  border: 1px solid rgba(74, 222, 128, 0.4);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.results-header h3 {
  font-size: clamp(1.2rem, 3vw, 1.7rem);
  font-family: var(--font-display);
  font-weight: 600;
}

.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.result-block {
  background: #0d0d14;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
}

.result-block--posts {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.result-block-label {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

/* Calendar rows */
.cal-row {
  display: grid;
  grid-template-columns: 90px 90px 120px 1fr;
  gap: 8px;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
}

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

.cal-day {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.82rem;
}

.cal-platform {
  font-weight: 600;
  font-size: 0.82rem;
}

.cal-type {
  color: var(--fg-muted);
  font-size: 0.8rem;
}

.cal-topic {
  color: var(--fg);
  font-size: 0.83rem;
}

/* Posts */
.post-card {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.post-card:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.post-platform {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.post-caption {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--fg);
  margin-bottom: 12px;
}

.post-hashtags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.hashtag {
  font-size: 0.76rem;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 3px 10px;
  border-radius: 100px;
  font-weight: 500;
}

/* Results CTA */
.results-cta {
  margin-top: 48px;
  padding: 40px;
  text-align: center;
  background: linear-gradient(135deg, rgba(74,222,128,0.08), rgba(74,222,128,0.03));
  border: 1px solid rgba(74,222,128,0.2);
  border-radius: 16px;
}

.results-cta-text {
  font-size: 1.1rem;
  color: var(--fg);
  margin-bottom: 24px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-btn {
  display: inline-block;
  padding: 16px 36px;
  background: var(--accent);
  color: #0a0a0f;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  border-radius: var(--radius);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 0 24px var(--accent-glow);
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 32px rgba(74, 222, 128, 0.3);
}

/* Error */
.demo-error {
  margin-top: 20px;
  padding: 16px 20px;
  border: 1px solid rgba(255, 80, 80, 0.3);
  border-radius: var(--radius);
  color: #ff6060;
  font-size: 0.9rem;
  text-align: center;
}

/* Footer */
.footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
}

.footer-email {
  color: var(--fg-muted);
  font-size: 0.9rem;
}

/* Mobile */
@media (max-width: 768px) {
  .hero {
    min-height: 80vh;
    padding: 60px 20px;
  }

  .hero-stats {
    gap: 32px;
  }

  .problem, .services, .how, .closing {
    padding: 80px 20px;
  }

  .step {
    gap: 16px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .demo-card {
    padding: 28px 24px;
  }

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

  .form-group--wide {
    max-width: 100%;
  }

  .results-grid {
    grid-template-columns: 1fr;
  }

  .cal-row {
    grid-template-columns: 80px 80px 1fr;
    grid-template-rows: auto auto;
  }

  .cal-topic {
    grid-column: 1 / -1;
    color: var(--fg-muted);
  }

  .results-cta {
    padding: 28px 20px;
  }
}