:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #1a1a26;
  --fg: #e8e8ed;
  --fg-muted: #8888a0;
  --accent: #6c5ce7;
  --accent-light: #a29bfe;
  --accent-glow: rgba(108, 92, 231, 0.15);
  --green: #00d2a0;
  --green-muted: rgba(0, 210, 160, 0.12);
  --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; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* === HERO === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: 820px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.5px;
  color: var(--accent-light);
  background: var(--accent-glow);
  margin-bottom: 32px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero h1 .accent {
  background: linear-gradient(135deg, var(--accent-light), var(--green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lede {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 580px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

/* Mock interview card */
.hero-visual {
  margin-top: 20px;
}

.mock-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-align: left;
  max-width: 560px;
  margin: 0 auto;
}

.mock-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--fg-muted);
  font-weight: 500;
}

.mock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.mock-dot.green {
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}

.mock-body {
  padding: 24px 20px;
}

.mock-q {
  font-size: 1rem;
  color: var(--fg);
  font-style: italic;
  margin-bottom: 20px;
  padding-left: 16px;
  border-left: 3px solid var(--accent);
  line-height: 1.6;
}

.mock-feedback {
  background: var(--green-muted);
  border: 1px solid rgba(0, 210, 160, 0.2);
  border-radius: 8px;
  padding: 14px 16px;
}

.feedback-score {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--green);
  margin-bottom: 6px;
}

.feedback-note {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.55;
}

/* === HOW IT WORKS === */
.how {
  padding: 100px 24px;
  background: var(--bg-elevated);
}

.how-inner {
  max-width: 960px;
  margin: 0 auto;
}

.how h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: 64px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.step {
  padding: 0 8px;
}

.step-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 16px;
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}

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

/* === FEATURES === */
.features {
  padding: 100px 24px;
}

.features-inner {
  max-width: 960px;
  margin: 0 auto;
}

.features h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: 64px;
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: rgba(108, 92, 231, 0.3);
}

.feature-icon {
  font-size: 1.5rem;
  color: var(--accent-light);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.93rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* === CLOSING === */
.closing {
  padding: 120px 24px;
  text-align: center;
  background: var(--bg-elevated);
  position: relative;
}

.closing::before {
  content: '';
  position: absolute;
  bottom: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 210, 160, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 24px;
}

.closing-sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.75;
}

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

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
}

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

.footer-note a {
  color: var(--accent-light);
  text-decoration: none;
}

.footer-note a:hover {
  text-decoration: underline;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .steps {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

  .hero {
    padding: 60px 20px 40px;
    min-height: auto;
  }

  .how, .features, .closing {
    padding: 64px 20px;
  }

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

  .mock-card {
    margin: 0 -4px;
  }
}