/* assets/css/style.css */
:root {
    --primary: #667eea;
    --secondary: #764ba2;
}

body {
    background: #f0f2f5;
    padding: 20px 0;
    min-height: 100vh;
}

.container {
    max-width: 960px;
}

.card {
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    margin-bottom: 20px;
    border: none;
    overflow: hidden;
}

.card-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 16px 24px;
    font-weight: 600;
    border: none;
}

.card-header i {
    margin-right: 8px;
}

.card-body {
    padding: 24px;
}

.btn-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border: none;
    transition: all 0.3s;
}

.btn-gradient:hover {
    color: white;
    opacity: 0.9;
    transform: translateY(-1px);
}

.navbar-custom {
    background: white;
    border-radius: 16px;
    padding: 8px 16px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    margin-bottom: 20px;
}

.loading {
    display: none;
    text-align: center;
    padding: 20px;
}