:root {
  --bg: #0a0a0c;
  --bg-elevated: #13131a;
  --bg-card: #1a1a24;
  --fg: #e8e6e3;
  --fg-dim: #8a8a96;
  --accent: #c4f04d;
  --accent-dim: #a3cc3a;
  --border: #2a2a36;
  --radius: 12px;
  --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);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* --- NAV --- */
.nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 32px;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--fg);
  letter-spacing: -0.02em;
}

/* --- HERO --- */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 32px 80px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-dim);
  max-width: 520px;
  line-height: 1.7;
}

.hero-visual {
  width: 100%;
}

/* --- TERMINAL --- */
.terminal {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
  font-size: 0.85rem;
}

.terminal-bar {
  display: flex;
  gap: 8px;
  padding: 14px 18px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.terminal-body {
  padding: 20px;
  line-height: 1.9;
}

.terminal-body .line { color: var(--fg-dim); }
.terminal-body .prompt { color: var(--accent); margin-right: 8px; }
.terminal-body .accent { color: var(--accent); }
.terminal-body .dim { opacity: 0.55; padding-left: 20px; }

/* --- PROBLEM --- */
.problem {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 32px;
  border-top: 1px solid var(--border);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 80px;
  align-items: start;
}

.problem-text h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.problem-text p {
  color: var(--fg-dim);
  font-size: 1.05rem;
  margin-bottom: 16px;
  line-height: 1.7;
}

.problem-stats {
  display: flex;
  flex-direction: column;
  gap: 40px;
  padding-top: 16px;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--fg-dim);
  margin-top: 6px;
}

/* --- HOW --- */
.how {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 32px;
  border-top: 1px solid var(--border);
}

.how-header {
  margin-bottom: 64px;
}

.how-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.how-sub {
  font-size: 1.1rem;
  color: var(--fg-dim);
  max-width: 560px;
}

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

.step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  align-items: start;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}

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

.step-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  opacity: 0.4;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.step-content p {
  color: var(--fg-dim);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 600px;
}

/* --- FEATURES --- */
.features {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 32px;
  border-top: 1px solid var(--border);
}

.features-header {
  margin-bottom: 56px;
}

.features-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: var(--accent);
}

.feature-icon {
  font-size: 1.6rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

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

/* --- CLOSING --- */
.closing {
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 32px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.closing-content {
  max-width: 640px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin-bottom: 20px;
}

.closing p {
  color: var(--fg-dim);
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 12px;
}

.closing-tagline {
  color: var(--accent) !important;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem !important;
  letter-spacing: 0.02em;
  margin-top: 24px !important;
}

/* --- FOOTER --- */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px;
}

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

.footer-brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--fg);
}

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

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .hero { padding: 24px 20px 60px; gap: 40px; }
  .hero h1 { font-size: 2.4rem; }
  .hero-sub { font-size: 1rem; }
  
  .problem { padding: 64px 20px; }
  .problem-grid { grid-template-columns: 1fr; gap: 48px; }
  
  .how { padding: 64px 20px; }
  .how-header { margin-bottom: 40px; }
  .step { grid-template-columns: 56px 1fr; gap: 16px; }
  .step-num { font-size: 2rem; }
  
  .features { padding: 64px 20px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { padding: 28px; }
  
  .closing { padding: 80px 20px; }
  
  .nav { padding: 20px; }
  .footer { padding: 24px 20px; }
  .footer-content { flex-direction: column; gap: 8px; text-align: center; }
  
  .terminal { font-size: 0.75rem; }
  .terminal-body { padding: 16px; }
  .stat-number { font-size: 2.4rem; }
}
/* --- DEMO BOX --- */
.nav-login {
  margin-left: auto;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--fg-dim);
  text-decoration: none;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: color 0.2s, border-color 0.2s;
}
.nav-login:hover { color: var(--fg); border-color: var(--accent); }

.demo-box {
  margin-top: 32px;
  max-width: 680px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.2s;
}

.demo-form {}
.demo-input-row {
  display: flex;
  gap: 12px;
  align-items: stretch;
}

.demo-input {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 14px 18px;
  outline: none;
  transition: border-color 0.2s;
}
.demo-input:focus { border-color: var(--accent); }
.demo-input::placeholder { color: var(--fg-dim); opacity: 0.6; }

.demo-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #0a0a0c;
  border: none;
  border-radius: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 14px 20px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s, opacity 0.2s;
}
.demo-btn:hover:not(:disabled) { background: var(--accent-dim); }
.demo-btn:disabled { opacity: 0.7; cursor: not-allowed; }
.demo-btn-spinner {
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.demo-hint {
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--fg-dim);
  opacity: 0.7;
}

.demo-error {
  margin-top: 10px;
  font-size: 0.875rem;
  color: #ff6b6b;
  padding: 10px 14px;
  background: rgba(255, 107, 107, 0.08);
  border: 1px solid rgba(255, 107, 107, 0.2);
  border-radius: 8px;
}

/* --- PROGRESS --- */
.demo-loading {
  margin-top: 28px;
  padding: 24px;
  background: var(--bg-card);
  border-radius: 10px;
}

.demo-progress { display: flex; flex-direction: column; gap: 16px; }

.progress-step {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.875rem;
  color: var(--fg-dim);
  opacity: 0.5;
  transition: opacity 0.3s;
}
.progress-step.active { opacity: 1; color: var(--fg); }
.progress-step.done { opacity: 0.7; }

.step-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
  transition: background 0.3s;
}
.progress-step.active .step-dot { background: var(--accent); box-shadow: 0 0 8px rgba(196, 240, 77, 0.5); }
.progress-step.done .step-dot { background: var(--accent); opacity: 0.5; }

/* --- RESULTS --- */
.demo-results { margin-top: 24px; }

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.results-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}
.results-time {
  font-size: 0.8rem;
  color: var(--fg-dim);
}

.results-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.results-col {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}

.results-col-title {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-dim);
  margin-bottom: 14px;
}

.brief-items { display: flex; flex-direction: column; gap: 10px; }

.brief-item { display: flex; flex-direction: column; gap: 2px; }

.brief-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.brief-value {
  font-size: 0.875rem;
  color: var(--fg);
  line-height: 1.5;
}

.email-preview {}
.email-subject {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--fg);
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.email-body {
  font-size: 0.875rem;
  color: var(--fg-dim);
  line-height: 1.7;
  white-space: pre-wrap;
}

/* --- CTA --- */
.demo-cta {
  margin-top: 20px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: 10px;
  text-align: center;
}
.demo-cta p {
  margin: 0;
  color: var(--fg);
  font-size: 0.95rem;
}
.demo-cta a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}
.demo-cta a:hover { text-decoration: underline; }

.demo-rate {
  display: flex;
  justify-content: center;
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--fg-dim);
}

/* --- RESPONSIVE --- */
@media (max-width: 600px) {
  .demo-input-row { flex-direction: column; }
  .demo-btn { justify-content: center; }
  .results-split { grid-template-columns: 1fr; }
}