:root {
    --primary-color: #4361ee;
    --secondary-color: #3f37c9;
    --success-color: #4cc9f0;
    --background-bg: #f8f9fa;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --card-hover-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    background-color: var(--background-bg);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: #333;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)) !important;
}

.navbar-brand {
    font-weight: 700;
    letter-spacing: 0.5px;
}

.card {
    border: none;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--card-hover-shadow);
}

.card-header {
    background-color: white;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding: 1.25rem;
    font-weight: 600;
}

.btn {
    border-radius: 8px;
    padding: 0.5rem 1.25rem;
    font-weight: 500;
    transition: all 0.2s;
}

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

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

.form-control {
    border-radius: 8px;
    padding: 0.75rem;
    border: 1px solid #e0e0e0;
}

.form-control:focus {
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.15);
    border-color: var(--primary-color);
}

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

.fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}

/* Login Page Specific */
.login-card {
    margin-top: 3rem;
}

.login-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
    padding: 2rem !important;
}

/* Vant UI Customization overrides */
.van-nav-bar {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}
.van-nav-bar__title {
    color: white;
}