:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --dark-color: #1f2937;
    --light-color: #f9fafb;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--light-color);
}

/* Custom button styles */
.btn-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border: none;
    color: white;
    transition: transform 0.2s;
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
    color: white;
}

/* Card shadows */
.card {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    border: none;
}

.card:hover {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Navbar custom */
.navbar-dark {
    background: linear-gradient(135deg, var(--dark-color) 0%, #374151 100%) !important;
}

/* Auth pages */
.auth-wrapper {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
    max-width: 450px;
    width: 100%;
}

.logo-text {
    font-size: 2.5rem;
    font-weight: bold;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Form improvements */
.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* Dashboard stats */
.stat-card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    border-left: 4px solid var(--primary-color);
}

.stat-card h3 {
    color: var(--dark-color);
    font-size: 2rem;
    margin-bottom: 5px;
}

.stat-card p {
    color: #6b7280;
    margin-bottom: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .auth-card {
        margin: 20px;
        padding: 30px 20px;
    }
    
    .logo-text {
        font-size: 2rem;
    }
}