:root {
    --primary: #3B82F6;
    --primary-hover: #2563EB;
    --success: #10B981;
    --text: #1F2937;
    --text-secondary: #6B7280;
    --border: #E5E7EB;
    --bg: #FAFAFA;
    --white: #FFFFFF;
}

/* Основні стилі */
body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Inter', 'Segoe UI', sans-serif;
}

h1, h2, h3, h4, h5 {
    color: var(--text);
    font-weight: 700;
}

/* Навбар — сучасний, чистий */
.navbar {
    background: var(--white) !important;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    padding: 1rem 0;
}

.navbar .navbar-brand {
    font-weight: 800;
    font-size: 1.75rem;
    color: var(--primary) !important;
}

.navbar .nav-link {
    color: var(--text) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 0.5rem;
    transition: all 0.2s;
}

.navbar .nav-link:hover {
    color: var(--primary) !important;
    background: rgba(59, 130, 246, 0.05);
}

/* Кнопки */
.btn-jumbo.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    font-weight: 600;
    border-radius: 0.75rem;
    padding: 0.75rem 1.5rem;
}

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

.btn-jumbo.btn-outline-primary {
    border-color: var(--primary);
    color: var(--primary);
    font-weight: 600;
    border-radius: 0.75rem;
}

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

/* Сайдбар */
.sidebar {
    background: white;
    border-right: 1px solid var(--border);
    min-height: 100vh;
    padding-top: 2rem;
    box-shadow: 2px 0 10px rgba(0,0,0,0.05);
}

.sidebar .nav-link {
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    margin: 0.25rem 1rem;
    font-weight: 500;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    background: rgba(59, 130, 246, 0.08);
    color: var(--primary);
}

/* Контент */
.main-content {
    padding: 2rem;
    min-height: calc(100vh - 80px);
}

/* Футер */
.footer {
    background: white;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 2rem 0;
    margin-top: auto;
}
.poll-card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    margin-bottom: 1.5rem;
    overflow: hidden;
    transition: transform 0.3s ease;
}
.poll-card:hover {
    transform: translateY(-1px);
}
.card-header {
    background-color: #f8f9fa;
    border-bottom: none;
    padding: 1.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: #2c3e50;
}