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

:root {
  --color-primary: #1a365d;
  --color-secondary: #d69e2e;
  --color-accent: #4a5568;
  --color-background: #fafafa;
  --color-surface: #ffffff;
  --color-text-primary: #2d3748;
  --color-text-secondary: #718096;
  
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Inter', sans-serif;
  
  --spacing-unit: 8px;
  --spacing-section-desktop: 80px;
  --spacing-section-mobile: 48px;
  --spacing-component: 24px;
  --spacing-card: 32px;
  
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
  
  --radius-card: 8px;
  --radius-button: 4px;
  
  --transition-default: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-background);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

h1 { font-size: 48px; }
h2 { font-size: 40px; }
h3 { font-size: 32px; }
h4 { font-size: 24px; }
h5 { font-size: 20px; }
h6 { font-size: 18px; }

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

a:hover {
  color: var(--color-secondary);
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-button);
  cursor: pointer;
  transition: all var(--transition-default);
  border: 2px solid transparent;
}

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

.btn-primary:hover {
  background-color: #142845;
  border-color: #142845;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

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

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

.card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: var(--spacing-card);
  transition: all var(--transition-default);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.form-input {
  width: 100%;
  height: 48px;
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 16px;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-button);
  background: white;
  transition: border-color var(--transition-default);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(26, 54, 93, 0.1);
}

.form-input.error {
  border-color: #e53e3e;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--color-text-primary);
}

.section {
  padding: var(--spacing-section-desktop) 0;
}

@media (max-width: 768px) {
  .section {
    padding: var(--spacing-section-mobile) 0;
  }
  
  h1 { font-size: 36px; }
  h2 { font-size: 28px; }
  h3 { font-size: 24px; }
}

.grid {
  display: grid;
  gap: var(--spacing-component);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.text-center { text-align: center; }
.text-secondary { color: var(--color-text-secondary); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}