@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --white: #FFFFFF;
  --off-white: #F7F7F5;
  --black: #111111;
  --text-dark: #333333;
  --text-light: #737373;
  --border-gray: #E2E2E2;
  --accent: #111111;
  --radius: 8px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05);
  --container-width: 1100px;
}

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

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background-color: var(--white);
  color: var(--text-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.7;
}

/* ── Layout ───────────────────────────────────────────── */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 80px 0;
}

@media (max-width: 768px) {
  section {
    padding: 60px 0;
  }
}

/* ── Navigation ───────────────────────────────────────── */
nav {
  height: 72px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-gray);
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--black);
  letter-spacing: -0.6px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo svg {
  color: var(--black);
  stroke-width: 2.5;
}

.nav-links {
  display: flex;
  gap: 32px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
}

.nav-links a.active {
  color: var(--black);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--black);
}

/* ── Mobile Menu ─────────────────────────────────────── */
.mobile-menu {
  position: fixed;
  top: 72px;
  left: 0;
  width: 100%;
  background: var(--white);
  padding: 24px;
  border-bottom: 1px solid var(--border-gray);
  display: none;
  flex-direction: column;
  gap: 16px;
  z-index: 999;
  box-shadow: var(--shadow-md);
}

.mobile-menu a {
  font-size: 18px;
  font-weight: 600;
  color: var(--black);
  padding: 12px 0;
  border-bottom: 1px solid var(--off-white);
}

.mobile-menu.active {
  display: flex;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
}

/* ── Hero ─────────────────────────────────────────────── */
.hero {
  text-align: center;
  background: var(--off-white);
  border-bottom: 1px solid var(--border-gray);
  padding: 120px 0;
}

.hero h1 {
  font-size: 56px;
  font-weight: 800;
  color: var(--black);
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero p {
  font-size: 20px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 40px;
}

@media (max-width: 768px) {
  .hero h1 { font-size: 40px; }
  .hero p { font-size: 18px; }
}

/* ── Buttons ──────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid var(--border-gray);
  background: var(--white);
}

.btn-primary {
  background: var(--black);
  color: var(--white);
  border: none;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ── Features ─────────────────────────────────────────── */
.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  padding: 32px;
  border: 1px solid var(--border-gray);
  border-radius: 12px;
  background: var(--white);
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: var(--black);
}

.feature-icon {
  width: 40px;
  height: 40px;
  background: var(--off-white);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--black);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-light);
}

@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .features-grid { grid-template-columns: 1fr; }
}

/* ── Footer ───────────────────────────────────────────── */
footer {
  padding: 60px 0;
  border-top: 1px solid var(--border-gray);
  background: var(--off-white);
  color: var(--text-light);
  font-size: 14px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 24px;
}

@media (max-width: 640px) {
  .footer-content {
    flex-direction: column;
    gap: 24px;
    text-align: center;
  }
}

/* ── Typography Utilities ─────────────────────────────── */
.text-center { text-align: center; }
.mt-4 { margin-top: 16px; }
.mb-8 { margin-bottom: 32px; }

/* ── Content Pages ────────────────────────────────────── */
.content-page {
  max-width: 800px;
  margin: 60px auto;
}

.content-page h1 {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -1.5px;
  margin-bottom: 32px;
}

.content-page h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 40px 0 16px;
}

.content-page p {
  margin-bottom: 20px;
  color: var(--text-dark);
  text-align: justify;
}