/* --------------------------
   GLOBAL
---------------------------*/
body {
    background-color: #f3f4f6;
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
}

/* --------------------------
   CENTER SCREEN
---------------------------*/
.center-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* --------------------------
   LOGIN CARD
---------------------------*/
.login-card {
    background: white;
    width: 100%;
    max-width: 420px;
    padding: 32px;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
}

/* --------------------------
   TEXTBOX (ASP.NET)
---------------------------*/
.aspNetTextBox {
    width: 100%;
    border: 1px solid #d1d5db;
    padding: 10px 12px;
    border-radius: 8px;
    outline: none;
    transition: 0.2s;
}

.aspNetTextBox:focus {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

/* --------------------------
   ERROR MESSAGE
---------------------------*/
.validation-message {
    color: #dc2626;
    font-size: 13px;
    margin-top: 2px;
}

/* --------------------------
   LOGIN BUTTON
---------------------------*/
.login-btn {
    width: 100%;
    padding: 10px;
    background-color: #2563eb;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

.login-btn:hover {
    background-color: #1d4ed8;
}