* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f4f6f9;
    color: #333;
}

.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-box {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    width: 400px;
    max-width: 90%;
}

.auth-box h2 {
    margin-bottom: 20px;
    text-align: center;
    color: #2c3e50;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
}

.btn {
    width: 100%;
    padding: 12px;
    background: #2c3e50;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 15px;
}

.btn:hover {
    background: #1a252f;
}

.alert {
    padding: 10px 15px;
    border-radius: 5px;
    margin-bottom: 15px;
    font-size: 14px;
}

.alert-danger {
    background: #fde2e2;
    color: #a94442;
}

.alert-success {
    background: #dff0d8;
    color: #3c763d;
}

.dashboard-container {
    max-width: 900px;
    margin: 40px auto;
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.stats-grid {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.stat-card {
    background: #2c3e50;
    color: #fff;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    flex: 1;
}

.stat-card h3 {
    font-size: 28px;
}