/* ===========================
   RESET & BASE
   =========================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #6c47ff;
  --color-primary-dark: #5235d4;
  --color-primary-light: #ede9ff;
  --color-accent: #ff6b35;
  --color-dark: #0f0f1a;
  --color-dark-2: #1a1a2e;
  --color-text: #2d2d3a;
  --color-text-muted: #6b6b80;
  --color-border: #e8e8f0;
  --color-bg: #fafafa;
  --color-white: #ffffff;
  --font: 'Inter', system-ui, sans-serif;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
  --shadow-lg: 0 20px 60px rgba(108,71,255,0.15);
  --transition: 0.2s ease;
}

html {
  scroll-behavior: smooth;
}

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

img {
  display: block;
  max-width: 100%;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* ===========================
   LAYOUT
   =========================== */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===========================
   TYPOGRAPHY
   =========================== */
h1, h2, h3 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
}

/* ===========================
   BUTTONS
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  box-shadow: 0 8px 24px rgba(108,71,255,0.35);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary-light);
}

.btn--sm {
  padding: 8px 20px;
  font-size: 0.875rem;
}

.btn--full {
  width: 100%;
}

.btn--white {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.btn--white:hover {
  background: var(--color-primary-light);
}

.btn--outline-white {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.5);
}

.btn--outline-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-white);
}

/* ===========================
   HEADER
   =========================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 68px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-dark);
  flex-shrink: 0;
}

.logo span {
  color: var(--color-primary);
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.nav__link {
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: background var(--transition), color var(--transition);
}

.nav__link:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ===========================
   HERO
   =========================== */
.hero {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-2) 60%, #2d1b69 100%);
  padding: 100px 0 80px;
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108,71,255,0.3) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  text-align: center;
  position: relative;
}

.hero__badge {
  display: inline-block;
  background: rgba(108,71,255,0.2);
  border: 1px solid rgba(108,71,255,0.4);
  color: #c4b5fd;
  padding: 6px 18px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 28px;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: var(--color-white);
  margin-bottom: 20px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.hero__title span {
  background: linear-gradient(90deg, #a78bfa, #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.7);
  max-width: 560px;
  margin: 0 auto 40px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero__stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 40px;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat strong {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-white);
}

.stat span {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
}

/* ===========================
   SECTION HEADER
   =========================== */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 12px;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

/* ===========================
   FEATURES
   =========================== */
.features {
  padding: 96px 0;
  background: var(--color-white);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.feature-card {
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--color-primary-light);
}

.feature-card__icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

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

/* ===========================
   PRICING
   =========================== */
.pricing {
  padding: 96px 0;
  background: var(--color-bg);
}

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  align-items: start;
}

.plan-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition);
}

.plan-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.plan-card--featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.02);
}

.plan-card--featured:hover {
  transform: scale(1.02) translateY(-4px);
}

.plan-card__badge {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.plan-card__header h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.plan-card__price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 8px;
}

.price__currency {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.price__value {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--color-dark);
  line-height: 1;
}

.price__period {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.plan-card__header p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

.plan-card__features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.plan-card__features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.925rem;
  color: var(--color-text);
}

.plan-card__features li::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* ===========================
   CTA
   =========================== */
.cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, #4f35c7 100%);
  padding: 96px 0;
}

.cta__inner {
  text-align: center;
}

.cta__inner h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  color: var(--color-white);
  margin-bottom: 16px;
}

.cta__inner p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 40px;
}

.cta__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===========================
   FOOTER
   =========================== */
.footer {
  background: var(--color-dark);
  padding: 40px 0;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.footer p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.4);
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 24px;
    gap: 4px;
  }

  .nav.nav--open {
    display: flex;
  }

  .nav__link {
    width: 100%;
    padding: 10px 14px;
  }

  .header__inner .btn--primary {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    padding: 72px 0 60px;
  }

  .hero__stats {
    gap: 32px;
  }

  .features__grid,
  .pricing__grid {
    grid-template-columns: 1fr;
  }

  .plan-card--featured {
    transform: none;
  }

  .plan-card--featured:hover {
    transform: translateY(-4px);
  }
}

@media (max-width: 480px) {
  .hero__actions,
  .cta__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }
}