/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  --lt-green-1:        #43e97b;
  --lt-green-2:        #38f9d7;
  --lt-green-primary:  #1fdf64;
  --lt-green-dark:     #17b651;
  --lt-purple:         #7c3aed;
  --lt-purple-light:   #a855f7;
  --lt-bg:             #f8f8f6;
  --lt-surface:        #ffffff;
  --lt-border:         #e5e5e3;
  --lt-text-primary:   #1a1a1a;
  --lt-text-secondary: #6b6b6b;
  --lt-text-muted:     #9ca3af;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --sp-1:  4px;
  --sp-2:  8px;
  --sp-3:  12px;
  --sp-4:  16px;
  --sp-5:  20px;
  --sp-6:  24px;
  --sp-8:  32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sp-16: 64px;
  --sp-20: 80px;
  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-full: 9999px;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md:   0 4px 12px rgba(0,0,0,.10), 0 2px 6px rgba(0,0,0,.06);
  --shadow-lift: 0 8px 24px rgba(0,0,0,.14), 0 4px 12px rgba(0,0,0,.08);
  --transition:  200ms ease;
}

/* ============================================================
   RESET
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--lt-bg);
  color: var(--lt-text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
ul, ol { list-style: none; }

/* ============================================================
   UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--sp-5);
}
@media (min-width: 768px)  { .container { padding: 0 var(--sp-8); } }
@media (min-width: 1200px) { .container { padding: 0 var(--sp-10); } }

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  text-align: center;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-4);
}
.section-subtitle {
  font-size: 1.125rem;
  color: var(--lt-text-secondary);
  text-align: center;
  max-width: 560px;
  margin: 0 auto var(--sp-12);
}

/* ============================================================
   BUTTON SYSTEM
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 14px var(--sp-6);
  border-radius: var(--radius-md);
  font-size: .9375rem;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  transition: transform var(--transition), box-shadow var(--transition),
              background-color var(--transition), color var(--transition);
}
.btn:hover  { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0);    box-shadow: none; }

.btn--primary {
  background: linear-gradient(135deg, var(--lt-green-1), var(--lt-green-2));
  color: #0d3320;
}
.btn--primary:hover { box-shadow: 0 8px 20px rgba(67, 233, 123, .4); }

.btn--ghost {
  background: transparent;
  color: var(--lt-text-primary);
  border: 2px solid transparent;
}
.btn--ghost:hover { background: rgba(0,0,0,.05); box-shadow: none; transform: none; }

.btn--outline {
  background: transparent;
  border: 2px solid var(--lt-border);
  color: var(--lt-text-primary);
}
.btn--outline:hover {
  border-color: var(--lt-green-primary);
  box-shadow: 0 4px 12px rgba(31, 223, 100, .2);
}

.btn--hero {
  background: var(--lt-text-primary);
  color: #ffffff;
  padding: 18px var(--sp-10);
  font-size: 1.0625rem;
  border-radius: var(--radius-full);
}
.btn--hero:hover { background: #333; box-shadow: 0 10px 28px rgba(0,0,0,.25); }

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

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 248, 246, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--lt-border);
  transition: box-shadow var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow-sm); }

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.navbar__logo-icon { flex-shrink: 0; }

.navbar__links { display: none; gap: var(--sp-2); }
@media (min-width: 768px) { .navbar__links { display: flex; align-items: center; } }

.navbar__link {
  padding: var(--sp-2) var(--sp-4);
  border-radius: var(--radius-sm);
  font-size: .9375rem;
  font-weight: 500;
  color: var(--lt-text-secondary);
  transition: color var(--transition), background var(--transition);
}
.navbar__link:hover { color: var(--lt-text-primary); background: rgba(0,0,0,.04); }

.navbar__actions { display: none; align-items: center; gap: var(--sp-3); }
@media (min-width: 640px) { .navbar__actions { display: flex; } }

.navbar__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--sp-2);
  border-radius: var(--radius-sm);
}
@media (min-width: 640px) { .navbar__hamburger { display: none; } }

.hamburger__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--lt-text-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.navbar__hamburger.is-open .hamburger__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__hamburger.is-open .hamburger__bar:nth-child(2) { opacity: 0; }
.navbar__hamburger.is-open .hamburger__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  background: var(--lt-surface);
  border-top: 1px solid var(--lt-border);
  padding: var(--sp-5);
}
.mobile-menu[hidden] { display: none; }
.mobile-menu nav { display: flex; flex-direction: column; gap: var(--sp-1); margin-bottom: var(--sp-5); }
.mobile-menu__link {
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-sm);
  font-weight: 500;
  color: var(--lt-text-secondary);
  transition: background var(--transition), color var(--transition);
}
.mobile-menu__link:hover { background: var(--lt-bg); color: var(--lt-text-primary); }
.mobile-menu__actions { display: flex; flex-direction: column; gap: var(--sp-3); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  padding: var(--sp-20) 0 var(--sp-16);
  min-height: 680px;
  display: flex;
  align-items: center;
}

.hero__blob {
  position: absolute;
  border-radius: var(--radius-full);
  filter: blur(80px);
  opacity: .35;
  pointer-events: none;
}
.hero__blob--1 {
  width: 600px; height: 600px;
  top: -200px; left: -100px;
  background: radial-gradient(circle, var(--lt-green-1), transparent 70%);
}
.hero__blob--2 {
  width: 500px; height: 500px;
  bottom: -150px; right: -80px;
  background: radial-gradient(circle, var(--lt-purple-light), transparent 70%);
}

.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-12);
  align-items: center;
}
@media (min-width: 900px) { .hero__inner { grid-template-columns: 1fr 1fr; } }

.hero__headline {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: var(--sp-5);
}
.hero__subheadline {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--lt-text-secondary);
  max-width: 480px;
  margin-bottom: var(--sp-8);
  line-height: 1.6;
}
.hero__cta-group {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--sp-3);
}
.hero__cta-note { font-size: .875rem; color: var(--lt-text-muted); }

.hero__visual { display: flex; justify-content: center; }
.hero__mockup {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lift);
  padding: var(--sp-8) var(--sp-6);
  width: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
  transform: rotate(2deg);
}
.mockup__avatar {
  width: 80px; height: 80px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--lt-green-1), var(--lt-green-2));
}
.mockup__name { font-weight: 700; color: var(--lt-text-primary); font-size: .9375rem; }
.mockup__btn {
  width: 100%;
  padding: 14px;
  border-radius: var(--radius-md);
  background: var(--lt-bg);
  border: 1px solid var(--lt-border);
  text-align: center;
  font-size: .875rem;
  font-weight: 500;
  color: var(--lt-text-secondary);
}

/* ============================================================
   FEATURES
   ============================================================ */
.features {
  padding: var(--sp-20) 0;
  background: var(--lt-surface);
}
.features__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
}
@media (min-width: 640px) { .features__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .features__grid { grid-template-columns: repeat(3, 1fr); } }

.feature-card {
  padding: var(--sp-8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--lt-border);
  background: var(--lt-surface);
  transition: transform var(--transition), box-shadow var(--transition);
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.feature-card__icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  background: rgba(31, 223, 100, .1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-5);
}
.feature-card__title { font-size: 1.125rem; font-weight: 700; margin-bottom: var(--sp-3); }
.feature-card__desc { color: var(--lt-text-secondary); line-height: 1.65; font-size: .9375rem; }

/* ============================================================
   PRICING
   ============================================================ */
.pricing { padding: var(--sp-20) 0; background: var(--lt-bg); }
.pricing__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
  align-items: start;
}
@media (min-width: 768px) { .pricing__grid { grid-template-columns: repeat(3, 1fr); align-items: stretch; } }

.pricing-card {
  position: relative;
  background: var(--lt-surface);
  border: 1px solid var(--lt-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
  height: 100%;
}
.pricing-card--featured {
  border-color: var(--lt-green-primary);
  box-shadow: 0 0 0 1px var(--lt-green-primary), var(--shadow-md);
  transform: scale(1.03);
  z-index: 1;
}
@media (max-width: 767px) { .pricing-card--featured { transform: none; } }

.pricing-card__badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--lt-green-1), var(--lt-green-2));
  color: #0d3320;
  font-size: .75rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing-card__name { font-size: 1.125rem; font-weight: 700; margin-bottom: var(--sp-2); }
.pricing-card__price { display: flex; align-items: baseline; gap: var(--sp-1); }
.price__amount { font-size: 2.5rem; font-weight: 800; letter-spacing: -0.03em; }
.price__period { color: var(--lt-text-muted); font-size: .875rem; }
.pricing-card__tagline { color: var(--lt-text-secondary); font-size: .875rem; }

.pricing-card__features { display: flex; flex-direction: column; gap: var(--sp-3); flex: 1; }
.pricing-card__features li { display: flex; align-items: center; gap: var(--sp-3); font-size: .9375rem; }
.check { color: var(--lt-green-primary); font-weight: 700; flex-shrink: 0; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--lt-text-primary); color: #fff; }
.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-10);
  padding-top: var(--sp-16);
  padding-bottom: var(--sp-10);
}
@media (min-width: 768px) { .footer__inner { grid-template-columns: 2fr 3fr auto; align-items: start; } }

.footer__logo { color: #fff; margin-bottom: 0; }
.footer__tagline { margin-top: var(--sp-3); color: rgba(255,255,255,.55); font-size: .875rem; }

.footer__links { display: flex; gap: var(--sp-10); flex-wrap: wrap; }
.footer__col { display: flex; flex-direction: column; gap: var(--sp-3); }
.footer__col-title {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: rgba(255,255,255,.45);
  margin-bottom: var(--sp-1);
}
.footer__link { font-size: .9rem; color: rgba(255,255,255,.7); transition: color var(--transition); }
.footer__link:hover { color: #fff; }

.footer__social { display: flex; gap: var(--sp-3); align-items: flex-start; }
.social-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.7);
  transition: background var(--transition), color var(--transition);
}
.social-icon:hover { background: rgba(255,255,255,.2); color: #fff; }

.footer__bottom { border-top: 1px solid rgba(255,255,255,.1); padding: var(--sp-6) 0; }
.footer__bottom-inner {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  align-items: center;
  text-align: center;
}
@media (min-width: 640px) {
  .footer__bottom-inner { flex-direction: row; justify-content: space-between; text-align: left; }
}
.footer__copy { font-size: .875rem; color: rgba(255,255,255,.45); }
.footer__legal { display: flex; gap: var(--sp-5); }
.footer__legal a { font-size: .875rem; color: rgba(255,255,255,.45); transition: color var(--transition); }
.footer__legal a:hover { color: rgba(255,255,255,.75); }