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

:root {
  --primary: #0D9488;
  --primary-dark: #0A7A70;
  --primary-light: #CCFBF1;
  --accent: #B87333;
  --bg: #FAFAF9;
  --bg-alt: #F5F5F4;
  --text: #1C1917;
  --text-light: #57534E;
  --text-lighter: #A8A29E;
  --white: #FFFFFF;
  --radius: 12px;
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
  --transition: 0.3s ease;
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'DM Serif Display', Georgia, serif;
  line-height: 1.2;
  color: var(--text);
}

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }

img { max-width: 100%; height: auto; }

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

section {
  padding: 100px 0;
}

/* === NAV === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 250, 249, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0,0,0,0.05);
  padding: 16px 0;
  transition: all var(--transition);
}

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

.nav-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 1.4rem;
  color: var(--text);
  font-weight: 400;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

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

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

.lang-switch {
  display: flex;
  gap: 8px;
  font-size: 0.8rem;
}

.lang-switch a {
  color: var(--text-lighter);
  padding: 4px 8px;
  border-radius: 4px;
  transition: all var(--transition);
}

.lang-switch a:hover,
.lang-switch a.active {
  color: var(--primary);
  background: var(--primary-light);
}

/* Mobile menu */
.nav-toggle { display: none; cursor: pointer; }
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: all var(--transition);
}

/* === HERO === */
.hero {
  padding: 160px 0 120px;
  background: linear-gradient(135deg, var(--bg) 0%, var(--primary-light) 100%);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(13,148,136,0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero h1 {
  font-size: 3.2rem;
  margin-bottom: 24px;
  max-width: 700px;
}

.hero h1 span { color: var(--primary); }

.hero p {
  font-size: 1.15rem;
  color: var(--text-light);
  max-width: 560px;
  margin-bottom: 40px;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(13,148,136,0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(13,148,136,0.4);
}

/* === SERVICES === */
.services { background: var(--white); }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.section-header p {
  color: var(--text-light);
  font-size: 1.05rem;
  max-width: 540px;
  margin: 0 auto;
}

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

.service-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 40px 32px;
  transition: all var(--transition);
  border: 1px solid transparent;
}

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

.service-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 24px;
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: 16px;
}

.service-card p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.service-card ul {
  list-style: none;
  padding: 0;
}

.service-card li {
  color: var(--text-light);
  font-size: 0.88rem;
  padding: 4px 0;
  padding-left: 20px;
  position: relative;
}

.service-card li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--primary);
}

/* === WHY === */
.why { background: var(--bg); }

.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.why-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: all var(--transition);
}

.why-card:hover {
  box-shadow: var(--shadow);
}

.why-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.why-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
}

.why-card p {
  color: var(--text-light);
  font-size: 0.9rem;
}

/* === CTA === */
.cta {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  text-align: center;
  padding: 80px 0;
}

.cta h2 {
  color: var(--white);
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.cta p {
  color: rgba(255,255,255,0.85);
  font-size: 1.05rem;
  max-width: 500px;
  margin: 0 auto 32px;
}

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

.btn-white:hover {
  background: var(--bg);
  color: var(--primary-dark);
  transform: translateY(-2px);
}

/* === FOOTER === */
.footer {
  background: var(--text);
  color: var(--text-lighter);
  padding: 40px 0;
  text-align: center;
  font-size: 0.85rem;
}

.footer a { color: var(--text-lighter); }
.footer a:hover { color: var(--white); }

/* === RESPONSIVE === */
@media (max-width: 968px) {
  .services-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2.4rem; }
  section { padding: 72px 0; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    padding: 24px;
    border-bottom: 1px solid rgba(0,0,0,0.05);
  }
  .hero { padding: 120px 0 80px; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
}