.business-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 12px 16px;
    background: rgba(24,28,35,0.85);
    backdrop-filter: blur(8px);
}

.business-nav {
    display: flex;
    gap: 12px;
}

.business-nav a {
    color: white;
    text-decoration: none;
    font-size: 1rem;
    padding: 8px 16px;
    border-radius: 20px;
    transition: all 0.2s;
    background: rgba(0, 0, 0, 0.15);
    font-weight: 500;
}

.business-nav a:hover {
    background: rgba(255, 255, 255, 0.1);
}

.business-nav a.active {
    background: rgba(255, 255, 255, 0.2);
}

.theme-toggle {
    position: static;
    z-index: 1100;
}

#themeSwitcher {
    background: rgba(0, 0, 0, 0.15);
    border: none;
    border-radius: 20px;
    padding: 8px 16px;
    font-size: 1rem;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s;
    font-weight: 500;
}

#themeSwitcher:hover {
    background: rgba(255,255,255,0.08);
}

/* Стили для светлой темы */
body.light-theme {
    background-color: #ffffff;
    color: #333333;
}

body.light-theme .hero-overlay {
    background: rgba(255, 255, 255, 0.8);
}

body.light-theme .business-header {
    background: rgba(255,255,255,0.95);
}

body.light-theme .business-nav a,
body.light-theme #themeSwitcher {
    color: #232733;
    background: rgba(0,0,0,0.08);
}

body.light-theme .business-nav a.active {
    background: rgba(0,0,0,0.15);
}

body.light-theme .business-nav a:hover,
body.light-theme #themeSwitcher:hover {
    background: rgba(0,0,0,0.12);
}

/* Базовые стили для темной темы */
body {
    background-color: #1a1a1a;
    color: #ffffff;
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
}

@media (max-width: 700px) {
    .business-header {
        flex-direction: row;
        align-items: center;
        padding: 8px 4vw;
        gap: 0;
    }
    .business-nav {
        gap: 4px;
    }
    .business-nav a, #themeSwitcher {
        font-size: 0.95rem;
        padding: 7px 10px;
        border-radius: 16px;
    }
}

@media (max-width: 480px) {
    .business-header {
        padding: 4px 2vw;
    }
    .business-nav a, #themeSwitcher {
        font-size: 0.9rem;
        padding: 6px 7px;
        border-radius: 14px;
    }
}

.vk-link {
  background: #0077FF !important;
  color: #fff !important;
  border: none !important;
}
.vk-link:hover {
  background: #005ecb !important;
  color: #fff !important;
}