:root {
  /* Brand Colors */
  --primary: #c53429;
  --primary-hover: #a82a20;
  --secondary: #9aa0a6;
  --text: #333333;
  --text-light: #666666;
  --bg: #ffffff;
  --bg-alt: #f9f9f9;
  --border: #eeeeee;

  /* Spacing */
  --space-sm: 10px;
  --space-md: 20px;
  --space-lg: 40px;
  --space-xl: 80px;

  /* Typography */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  font-family: var(--font-main);
  color: var(--text);
  line-height: 1.6;
  background-color: var(--bg);
}

a {
  text-decoration: none;
  color: inherit;
  transition: 0.3s;
}

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* --- Header --- */
.header {
  position: sticky;
  top: 0;
  background: white;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  z-index: 1000;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo img {
  height: 50px;
}

.nav {
  display: flex;
  gap: var(--space-md);
}

.nav-link {
  font-weight: 500;
  color: var(--text);
}

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

.btn-cabinet {
  background: var(--primary);
  color: white;
  padding: 10px 20px;
  border-radius: 5px;
  font-weight: 600;
}

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

/* --- Hero --- */
.hero {
  padding: var(--space-xl) 0;
  background: linear-gradient(rgba(0,0,0,0.02), rgba(0,0,0,0.05));
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  color: var(--primary);
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-light);
  max-width: 800px;
  margin: 0 auto var(--space-lg);
}

.hero-btns {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
}

.btn-primary {
  background: var(--primary);
  color: white;
  padding: 15px 30px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 1.1rem;
}

.btn-secondary {
  border: 2px solid var(--primary);
  color: var(--primary);
  padding: 13px 28px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 1.1rem;
}

/* --- Sections --- */
section {
  padding: var(--space-xl) 0;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: var(--space-lg);
}

/* Programs Grid */
.programs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}

.program-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 15px;
  padding: var(--space-md);
  transition: 0.3s;
  text-align: center;
}

.program-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.program-card h3 {
  margin-bottom: var(--space-sm);
  color: var(--primary);
}

.program-card p {
  color: var(--text-light);
  margin-bottom: var(--space-md);
}

/* Footer */
.footer {
  background: #222;
  color: white;
  padding: var(--space-lg) 0;
  text-align: center;
}

.footer p {
  opacity: 0.7;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 2rem; }
  .nav { display: none; } /* управляется бургером, см. .nav-open */
}

/* --- Бургер-меню (мобильное) --- */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 10px;
}
.burger span {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--text);
  border-radius: 2px;
  transition: 0.3s;
}
@media (max-width: 768px) {
  .burger { display: flex; }
  .btn-cabinet { display: none; }
  .nav {
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    gap: 0;
    padding: 10px 0;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
  }
  .header { position: sticky; }
  .header-inner { position: relative; }
  .nav .nav-link { padding: 12px 20px; }
  .nav .nav-link:hover { background: var(--bg-alt); }
  .nav-open .nav { display: flex; }
}

/* --- Обратный звонок в шапке (инжектится site.js) --- */
.callback-link {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 8px 14px;
  border-radius: 20px;
  cursor: pointer;
  white-space: nowrap;
}
.callback-link:hover { background: var(--primary); color: #fff; }
@media (max-width: 768px) {
  .callback-link { display: none; }
}

/* --- Попапы --- */
.popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.popup-overlay.popup-open { display: flex; }
.popup {
  background: #fff;
  border-radius: 15px;
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--space-lg);
  position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.popup-close {
  position: absolute;
  top: 12px;
  right: 15px;
  background: none;
  border: 0;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--text-light);
  line-height: 1;
}
.popup-close:hover { color: var(--primary); }
.popup h3 {
  margin: 0 0 6px;
  color: var(--primary);
  font-size: 1.4rem;
}
.popup .popup-sub {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
}
.popup label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.9rem;
}
.popup input,
.popup select,
.popup textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  margin-bottom: var(--space-md);
}
.popup input:focus,
.popup select:focus,
.popup textarea:focus {
  outline: 2px solid var(--primary);
  outline-offset: -1px;
}
.popup .btn-primary { width: 100%; border: 0; cursor: pointer; }
.popup-result {
  display: none;
  text-align: center;
  padding: var(--space-md) 0;
  font-weight: 600;
}
.popup-result.show { display: block; }
.popup-result.ok { color: var(--success, #27ae60); }
.popup-result.err { color: var(--primary); }