/* ===== ПЕРЕМЕННЫЕ ТЕМ ===== */
:root, [data-theme="light"] {
  --bg-rgb: 255,255,255;
  --green: #2B6E3C;
  --green-light: #3D9B51;
  --green-glow: rgba(43,110,60,0.1);
  --bg: #FFFFFF;
  --bg-alt: #F5F7FA;
  --bg-card: #FFFFFF;
  --bg-input: #F0F2F5;
  --text: #1A1D24;
  --text-muted: #5F6B7A;
  --border: rgba(0,0,0,0.08);
  --gradient: linear-gradient(135deg, #2B6E3C, #3D9B51);
  --tag-bg: rgba(43,110,60,0.07);
  --tag-border: rgba(43,110,60,0.15);
  --footer-bg: #1A1D24;
  --footer-text: #E6EDF3;
  color-scheme: light;
}

[data-theme="dark"] {
  --bg-rgb: 13,17,23;
  --green: #3D9B51;
  --green-light: #56B86B;
  --green-glow: rgba(61,155,81,0.18);
  --bg: #0D1117;
  --bg-alt: #161B22;
  --bg-card: #1E2736;
  --bg-input: #1C2330;
  --text: #E6EDF3;
  --text-muted: #8B949E;
  --border: rgba(61,155,81,0.12);
  --gradient: linear-gradient(135deg, #3D9B51, #56B86B);
  --tag-bg: rgba(61,155,81,0.1);
  --tag-border: rgba(61,155,81,0.25);
  --footer-bg: #0D1117;
  --footer-text: #E6EDF3;
  color-scheme: dark;
}

[data-theme="dark"] .btn-outline-light {
  color: #fff;
  border-color: rgba(255,255,255,0.5);
}

/* Общие стили */
body {
  padding-top: 72px;
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background 0.3s, color 0.3s;
  overflow-x: hidden;
}

/* Навбар */
.navbar {
  background: rgba(var(--bg-rgb), 0.88);
  backdrop-filter: blur(20px);
  transition: background 0.3s;
  border-bottom: 1px solid var(--border);
}
[data-theme="dark"] .navbar {
  background: rgba(13,17,23,0.85);
}
.navbar-brand .logo-badge {
  width: 42px;
  height: 42px;
  background: var(--gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 18px;
  color: #fff;
  box-shadow: 0 4px 20px rgba(43,110,60,0.35);
}
.logo-text {
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
}
.logo-text span { color: var(--green); }
.nav-link {
  color: var(--text-muted) !important;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-link:hover, .nav-link:focus {
  color: var(--text) !important;
}
.nav-link::after {
  content: '';
  display: block;
  width: 0;
  height: 2px;
  background: var(--green);
  transition: width 0.2s;
}
.nav-link:hover::after {
  width: 100%;
}
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
}
.theme-toggle:hover {
  background: var(--green-glow);
  border-color: var(--green);
}
[data-theme="light"] .icon-moon { display: inline; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="dark"] .icon-sun { display: inline; }
[data-theme="dark"] .icon-moon { display: none; }
.header-cta {
  white-space: nowrap;
}

/* Кнопки */
.btn-primary, .btn-success {
  background: var(--gradient) !important;
  border: none !important;
  box-shadow: 0 4px 12px rgba(43,110,60,0.3);
}
.btn-primary:hover, .btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(43,110,60,0.4);
}
.btn-outline-secondary {
  border-color: var(--border);
  color: var(--text);
}
.btn-outline-secondary:hover {
  background: var(--green-glow);
  border-color: var(--green);
  color: var(--green);
}

/* Hero */
.hero-section {
  position: relative;
  padding-top: 60px;
  background: radial-gradient(ellipse 80% 60% at 70% 40%, var(--green-glow) 0%, transparent 60%);
}
.hero-tag {
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--green);
}
.dot {
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  display: inline-block;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100%{ opacity: 1; transform: scale(1); }
  50%{ opacity: 0.5; transform: scale(1.3); }
}
.highlight {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-card {
  background: var(--tag-bg);
  border: 1px solid var(--border);
}
.stat-number {
  font-size: 28px;
  font-weight: 800;
  color: var(--green);
}
.stat-label {
  font-size: 12px;
  color: var(--text-muted);
}
.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.card-logo-icon {
  width: 44px;
  height: 44px;
  background: var(--gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 900;
  color: #fff;
}
.badge-official {
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--green);
}
.product-item {
  background: var(--bg-alt);
  border: 1px solid var(--border);
}
.product-item:hover {
  border-color: var(--green);
  background: var(--green-glow);
}

/* Общие стили секций */
.section-tag {
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  display: inline-block;
  padding: 5px 16px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.accent {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.product-card, .service-card, .why-card, .update-card {
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid var(--border);
  background: var(--bg-card);
}
.product-card:hover, .service-card:hover, .why-card:hover, .update-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}
.pc-icon {
  width: 56px;
  height: 56px;
  background: var(--tag-bg);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--green);
}
.featured {
  border-color: var(--green) !important;
  position: relative;
}
.pc-tag {
  position: absolute;
  top: 15px;
  right: 15px;
  background: var(--gradient);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
}
.service-icon i {
  color: var(--green);
}
.bullet {
  color: var(--green);
}
/* Тарифы */
.popular {
  border: 2px solid var(--green) !important;
}
.popular-badge {
  background: var(--gradient);
  color: #fff;
}
/* CTA */
.cta-banner {
  background: linear-gradient(135deg, #2B6E3C, #1F5A2E, #3D9B51);
}
/* Футер */
footer {
  background: var(--footer-bg);
  color: var(--footer-text);
}
footer a {
  color: var(--footer-text);
  text-decoration: none;
}
footer a:hover {
  color: var(--green);
}
.social-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--footer-text);
  transition: all 0.2s;
}
.social-btn:hover {
  background: rgba(43,110,60,0.2);
  border-color: var(--green);
  color: var(--green);
}

/* Адаптация */
@media (max-width: 768px) {
  body {
    padding-top: 60px;
  }
  .hero-section {
    padding-top: 40px;
  }
  .hero-card {
    margin-top: 2rem;
  }
  .display-3 {
    font-size: calc(1.5rem + 3vw);
  }
  .display-5 {
    font-size: calc(1.2rem + 2vw);
  }
  .stat-number {
    font-size: 22px;
  }
  .stat-card {
    padding: 8px !important;
  }
  .container {
    padding-left: 10px !important;
    padding-right: 10px !important;
  }
}
@media (max-width: 480px) {
  body {
    padding-top: 56px;
  }
  .hero-section {
    padding-top: 20px;
  }
  .hero-actions .btn {
    width: 100%;
    margin-bottom: 10px;
  }
  .stats .col-4 {
    padding: 0 4px;
  }
  .stat-number {
    font-size: 18px;
  }
  .stat-label {
    font-size: 10px;
  }
  .product-card, .service-card, .why-card, .update-card {
    padding: 16px;
  }
  .cta-banner {
    padding: 32px 20px;
    text-align: center;
  }
  .cta-actions {
    flex-direction: column;
    gap: 10px;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .footer-links {
    text-align: center;
  }
}

/* ===== ТЁМНАЯ ТЕМА ===== */
[data-theme="dark"] .product-card,
[data-theme="dark"] .service-card,
[data-theme="dark"] .why-card,
[data-theme="dark"] .update-card,
[data-theme="dark"] .hero-card,
[data-theme="dark"] .stat-card,
[data-theme="dark"] .contact-form-card,
[data-theme="dark"] .card,
[data-theme="dark"] .list-group-item {
  color: var(--text);
  background-color: var(--bg-card);
}

[data-theme="dark"] .product-card .text-muted,
[data-theme="dark"] .service-card .text-muted,
[data-theme="dark"] .why-card .text-muted,
[data-theme="dark"] .update-card .text-muted,
[data-theme="dark"] .card-text,
[data-theme="dark"] .pc-desc,
[data-theme="dark"] .service-desc,
[data-theme="dark"] .why-text,
[data-theme="dark"] .update-plan-desc,
[data-theme="dark"] .update-features li,
[data-theme="dark"] .contact-info-text,
[data-theme="dark"] .form-label,
[data-theme="dark"] .form-text {
  color: var(--text-muted) !important;
}

[data-theme="dark"] .product-card .pc-name,
[data-theme="dark"] .service-card .service-title,
[data-theme="dark"] .why-card .why-title,
[data-theme="dark"] .update-card .update-plan-name,
[data-theme="dark"] .contact-info-title,
[data-theme="dark"] .form-title,
[data-theme="dark"] .card-title {
  color: var(--text);
}

[data-theme="dark"] .product-card .pc-price,
[data-theme="dark"] .update-price,
[data-theme="dark"] .product-price {
  color: var(--green-light);
}

[data-theme="dark"] .btn-outline-secondary {
  color: var(--text-muted);
  border-color: var(--border);
}
[data-theme="dark"] .btn-outline-secondary:hover {
  color: var(--green);
  background: var(--green-glow);
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
  background-color: var(--bg-input);
  color: var(--text);
  border-color: var(--border);
}
[data-theme="dark"] .form-control::placeholder {
  color: var(--text-muted);
}

/* Затемнение фона секций в тёмной теме */
[data-theme="dark"] #contacts,
[data-theme="dark"] #why,
[data-theme="dark"] #products {
  background-color: #0a0c10 !important;
}

/* Текст в контактах – светлее */
[data-theme="dark"] .contact-info-text,
[data-theme="dark"] #contacts .text-muted,
[data-theme="dark"] .contact-items .text-muted {
  color: #c9d1d9 !important;
}

/* Подзаголовки в тёмной теме – единый цвет */
[data-theme="dark"] .lead.text-muted {
  color: #8b949e !important;
}

/* Иконки в why-card – зелёные */
[data-theme="dark"] .why-card .bi {
  color: var(--green) !important;
}

/* Зелёная окантовка полей формы и карточки */
.form-control:focus,
.form-select:focus {
  border-color: var(--green) !important;
  box-shadow: 0 0 0 3px var(--green-glow) !important;
  outline: none;
}
.form-control,
.form-select {
  border-color: var(--border);
}
#contacts .card {
  border: 1px solid var(--green) !important;
  box-shadow: 0 4px 12px rgba(43,110,60,0.15);
}