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

body {
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #f9fbff, #4f46e5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border-radius: 14px;
    padding: 28px;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.2);
}

.auth-title {
    font-size: 26px;
    margin-bottom: 8px;
}

.auth-subtitle {
    color: #6b7280;
    font-size: 14px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
}

.form-group input {
    width: 100%;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 14px;
}

.auth-btn {
    width: 100%;
    border: none;
    border-radius: 10px;
    padding: 11px 14px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    color: #fff;
    background: linear-gradient(135deg, #2563eb, #4f46e5);
    margin-top: 4px;
}

.auth-error {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
    border-radius: 8px;
    padding: 8px 10px;
    margin-bottom: 12px;
    font-size: 13px;
}

.auth-footer {
    margin-top: 16px;
    font-size: 14px;
    color: #6b7280;
    text-align: center;
}

.auth-footer a {
    color: #2563eb;
    text-decoration: none;
}