:root {
  --color-primary: #5B5CE9;
  --color-primary-dark: #4a4bd4;
  --color-text: #1F2937;
  --color-text-muted: #6B7280;
  --color-bg: #FFFFFF;
  --color-bg-subtle: #F5F5F7;
  --color-border: #E5E7EB;
  --radius: 16px;
  --font: 'DM Sans', system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 28px;
  max-width: 1100px;
  margin: 0 auto;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 24px;
}

.nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

.nav a:hover {
  color: var(--color-primary);
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px 28px 80px;
}

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 40px 20px 60px;
  }
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 28px;
  max-width: 420px;
}

@media (max-width: 768px) {
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary);
  color: white !important;
  padding: 14px 24px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: background 0.2s;
}

.cta-button:hover {
  background: var(--color-primary-dark);
}

.cta-icon {
  font-size: 1.1rem;
}

.hero-note {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

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

.phone-mockup {
  width: 260px;
  height: 520px;
  background: linear-gradient(145deg, #2d2d2d 0%, #1a1a1a 100%);
  border-radius: 36px;
  padding: 12px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: var(--color-bg-subtle);
  border-radius: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mockup-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Features */
.features {
  background: var(--color-bg-subtle);
  padding: 80px 28px 100px;
}

.features h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 48px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  background: white;
  padding: 28px;
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

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

/* CTA section */
.cta-section {
  text-align: center;
  padding: 80px 28px 100px;
}

.cta-section h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.cta-button-large {
  padding: 16px 32px;
  font-size: 1.1rem;
}

/* Footer */
.footer {
  background: var(--color-bg-subtle);
  padding: 32px 28px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.footer a {
  color: var(--color-primary);
  text-decoration: none;
}

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

.footer p {
  margin-bottom: 4px;
}

.footer p:last-child {
  margin-bottom: 0;
}