:root {
    --brand-blue: #2A3A5E;
    --brand-blue-dark: #1E2A4A;
    --brand-gray-bg: #F0F2F5;
    --text-dark: #111827;
    --text-light: #6B7280;
    --border-color: #D1D5DB;
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--brand-gray-bg);
    color: var(--text-dark);
}

.loader {
    border: 4px solid #e5e7eb;
    border-top: 4px solid var(--brand-blue);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 40px auto;
}

.loader-small {
    border: 3px solid #e5e7eb;
    border-top: 3px solid var(--brand-blue);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.dock-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-in-out;
}

.chevron-icon { 
    transition: transform 0.3s ease-in-out; 
}

.expanded .chevron-icon { 
    transform: rotate(180deg); 
}