:root {
    --primary:  #2c3e50;
    --secondary: #5D2E8C;
    --accent: #0088cc;
    --light: #f8f9fa;
    --dark: #343a40;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #e41e26;
}

* {
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.container {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
    width: 320px;
    text-align: center;
    border-left: 4px solid var(--primary);
}

h2 {
    margin-bottom: 1rem;
    color: var(--dark);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.3rem;
    font-weight: bold;
    color: #555;
}

.form-group input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ccc;
    border-radius: 5px;
}

.btn {
    width: 100%;
    padding: 0.6rem;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.2s ease-in-out;
    margin-bottom: 0.5rem;
}

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

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

.btn-toggle {
    background-color: var(--dark);
    color: white;
}

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

.footer {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: #888;
}