:root {
    --primary-color: #2a6496;
    --secondary-color: #50b3a2;
    --accent-color: #f7df1e;
    --dark-color: #0f2027;
    --light-color: #f8f9fa;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}

body {
    background: linear-gradient(135deg, var(--dark-color) 0%, #2c5364 100%);
    min-height: 100vh;
    padding-bottom: 2rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.card {
    border-radius: 1rem;
    background: rgba(255, 255, 255, 0.97);
    border: none;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-3px);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    font-weight: 500;
    border-radius: 0.5rem;
    padding: 0.6rem 1.2rem;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #1a5286;
    border-color: #1a5286;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    background: linear-gradient(90deg, var(--primary-color), #3a7ab3) !important;
}

.display-6 {
    letter-spacing: 0.1em;
    user-select: all;
    background-color: #f8f9fa;
    padding: 0.75rem;
    border-radius: 0.5rem;
    border: 1px dashed #dee2e6;
    position: relative;
}

.form-control:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.25rem rgba(80, 179, 162, 0.25);
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.alert-success {
    background-color: #d1e7dd;
    border-color: #badbcc;
    color: #0f5132;
}

.table {
    border-radius: 0.5rem;
    overflow: hidden;
}

.table-hover tbody tr:hover {
    background-color: rgba(80, 179, 162, 0.05);
}

.font-monospace {
    background-color: #f8f9fa;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
}

/* Animation for password display */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.alert-success {
    animation: fadeIn 0.5s ease-out;
}