* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", Arial, sans-serif;
}

body {
    min-height: 100vh;
    background: linear-gradient(135deg, #4f46e5, #9333ea);
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-card {
    background: #ffffff;
    width: 100%;
    max-width: 420px;
    padding: 35px;
    border-radius: 14px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.auth-card h2 {
    text-align: center;
    margin-bottom: 8px;
    font-size: 26px;
    color: #111827;
}

.auth-card p.subtitle {
    text-align: center;
    margin-bottom: 25px;
    color: #6b7280;
    font-size: 14px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 13px;
    margin-bottom: 6px;
    color: #374151;
}

.form-group input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
}

.form-group input:focus {
    border-color: #6366f1;
}

.auth-btn {
    width: 100%;
    padding: 13px;
    background: #4f46e5;
    border: none;
    border-radius: 8px;
    color: #ffffff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
}

.auth-btn:hover {
    background: #4338ca;
}

.auth-footer {
    margin-top: 18px;
    text-align: center;
    font-size: 14px;
}

.auth-footer a {
    color: #4f46e5;
    text-decoration: none;
    font-weight: 600;
}

.error {
    background: #fee2e2;
    color: #991b1b;
    padding: 10px;
    border-radius: 6px;
    font-size: 13px;
    margin-bottom: 15px;
}