:root {
    --bg-color: #f4f4f9;
    --text-color: #333;
    --card-bg: #fff;
    --primary: #5c6bc0;
    --primary-hover: #3f51b5;
    --error: #e53935;
    --success: #43a047;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    max-width: 400px;
    width: 100%;
}

h1, h2, h3 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

input[type="text"], input[type="password"], input[type="number"], select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    box-sizing: border-box; 
    font-size: 16px;
}

button {
    width: 100%;
    padding: 12px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    margin-top: 1rem;
    transition: background 0.2s;
}

button:hover {
    background-color: var(--primary-hover);
}

.error-message {
    color: var(--error);
    text-align: center;
    margin-top: 1rem;
}

.logo {
    display: block;
    margin: 0 auto 1rem;
    max-width: 80px;
}