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

:root {
  --bg: #F7F4EE;
  --surface: #FFFFFF;
  --surface-alt: #FCFAF6;
  --accent: #0A8F4D;
  --accent-hover: #0A6E3D;
  --accent-dark: #0A6E3D;
  --accent-pale: #E8F6EC;
  --text: #1A1A18;
  --text-secondary: #55554F;
  --border: #E5E0D5;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* === TYPOGRAPHY === */
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.1; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.5rem); font-weight: 700; line-height: 1.2; }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); font-weight: 600; }
p { color: var(--text-secondary); }

/* === LAYOUT === */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

section { padding: 80px 0; }

/* === FADE-IN ANIMATION === */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

/* === NAV === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(247,244,238,0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 20px;
  max-width: 1100px;
  margin: 0 auto;
}

.nav-logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--text); }

.nav-links a.nav-cta {
  background: var(--accent);
  color: var(--bg);
  padding: 8px 18px;
  border-radius: 6px;
  font-weight: 600;
  transition: background 0.2s;
}
.nav-links a.nav-cta:hover { background: var(--accent-hover); color: var(--bg); }

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 16px 20px 24px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  padding: 12px 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  transition: color 0.2s;
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a:hover { color: var(--text); }
.mobile-menu a.nav-cta {
  margin-top: 12px;
  background: var(--accent);
  color: var(--bg);
  text-align: center;
  padding: 12px;
  border-radius: 6px;
  border-bottom: none;
  font-weight: 700;
}

/* === BUTTONS === */
.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--bg);
  border-radius: 6px;
  padding: 12px 24px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: background 0.2s, transform 0.15s;
  font-family: 'Inter', sans-serif;
}
.btn:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  transition: border-color 0.2s, color 0.2s, transform 0.15s;
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }

.btn-full { width: 100%; text-align: center; }

/* === CARDS === */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
}

/* === GRID === */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* === SECTION HEADER === */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header h2 { margin-bottom: 12px; }
.section-header p { max-width: 560px; margin: 0 auto; }

/* === ACCENT TEXT === */
.accent { color: var(--accent); }

/* === FOOTER === */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
}
.footer p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.footer a { color: var(--accent); }
.footer a:hover { text-decoration: underline; }

/* === PAGE HEADER === */
.page-header {
  padding: 140px 0 80px;
  text-align: center;
}
.page-header h1 { margin-bottom: 16px; }
.page-header p { font-size: 1.1rem; max-width: 560px; margin: 0 auto; }

/* === RESPONSIVE === */
@media (min-width: 768px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1024px) {
  .container { padding: 0 40px; }
}

@media (max-width: 767px) {
  .burger { display: flex; }
  .nav-links { display: none; }
  section { padding: 60px 0; }
  .page-header { padding: 110px 0 60px; }
}