:root {
    --bg-main: #f4f6f9;
    --bg-card: #ffffff;
    --border-main: #dadce0;
    --text-main: #202124;
    --text-muted: #5f6368;
    --accent: #1a73e8;
    --error: #d93025;
}
body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.login-box {
    background-color: var(--bg-card);
    border: 1px solid var(--border-main);
    padding: 30px;
    border-radius: 8px;
    width: 380px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    text-align: center;
}
.input-group {
    margin-bottom: 18px;
    text-align: left;
}
.input-group label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 6px;
}
.input-field {
    width: 100%;
    height: 38px;
    padding: 0 10px;
    background-color: #ffffff;
    border: 1px solid var(--border-main);
    color: var(--text-main);
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 14px;
}
.input-field:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 0 2px rgba(26,115,232,0.2);
}
.btn-login {
    width: 100%;
    height: 38px;
    background-color: var(--accent);
    border: 1px solid var(--accent);
    color: #ffffff;
    font-weight: bold;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.btn-login:hover {
    background-color: #1557b0;
    border-color: #1557b0;
}
.alert {
    padding: 10px;
    border-radius: 4px;
    font-size: 13px;
    margin-bottom: 15px;
    text-align: left;
}
.alert.error {
    background-color: #fce8e6;
    border: 1px solid var(--error);
    color: var(--error);
}