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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary: #64748b;
  --dark: #0f172a;
  --light: #f8fafc;
  --gray: #e2e8f0;
  --white: #ffffff;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 4px 15px rgba(0,0,0,0.1);
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background: var(--white);
}

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

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

ul { list-style: none; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* === NAVBAR === */
.navbar {
  background: var(--white);
  border-bottom: 1px solid var(--gray);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
}

.nav-links {
  display: flex;
  gap: 25px;
}

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

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

.mobile-menu {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--dark);
}

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

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.hero-subtitle {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 30px;
}

/* === PAGE HEADER === */
.page-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 50px 0;
  text-align: center;
}

.page-header h1 {
  font-size: 2rem;
  margin-bottom: 10px;
}

/* === BUTTONS === */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  transition: all 0.2s;
  margin: 5px;
}

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

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

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

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

.section .btn-primary:hover {
  background: var(--primary-dark);
}

/* === SECTIONS === */
.section {
  padding: 60px 0;
}

.section-alt {
  background: var(--light);
}

.section h2 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  text-align: center;
}

.section > .container > p {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 25px;
  color: var(--secondary);
}

.section > .container > .btn {
  display: block;
  width: fit-content;
  margin: 20px auto 0;
}

/* === GRID === */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 25px;
  margin-top: 30px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin-top: 30px;
}

/* === CARDS === */
.card {
  background: var(--white);
  border: 1px solid var(--gray);
  border-radius: var(--radius);
  padding: 25px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s;
}

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

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.card h3 {
  margin-bottom: 10px;
  color: var(--dark);
}

.card p {
  color: var(--secondary);
  font-size: 0.95rem;
}

.card h2 a {
  color: var(--dark);
}

.card h2 a:hover {
  color: var(--primary);
}

/* === CONTENT === */
.content h2 {
  text-align: left;
  margin-top: 30px;
}

.content p {
  margin-bottom: 15px;
  color: var(--secondary);
}

.content ul {
  list-style: disc;
  padding-left: 25px;
  margin-bottom: 15px;
}

.content ul li {
  margin-bottom: 8px;
  color: var(--secondary);
}

.meta {
  color: var(--secondary);
  font-size: 0.85rem;
  margin-bottom: 10px;
}

/* === CONTACT FORM === */
.contact-form {
  margin-top: 20px;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 600;
  color: var(--dark);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px 15px;
  border: 1px solid var(--gray);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

/* === FOOTER === */
.footer {
  background: var(--dark);
  color: var(--gray);
  padding: 40px 0 20px;
}

.footer h3 {
  color: var(--white);
  margin-bottom: 15px;
}

.footer p, .footer a {
  color: var(--gray);
  font-size: 0.9rem;
}

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

.footer ul li {
  margin-bottom: 8px;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .mobile-menu { display: block; }

  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--gray);
    box-shadow: var(--shadow-lg);
  }

  .nav-links.active { display: flex; }

  .hero h1 { font-size: 1.8rem; }
  .hero-subtitle { font-size: 1rem; }

  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }

  .page-header h1 { font-size: 1.5rem; }
}