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

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f4f7f7;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    width: 100%;
    padding: 20px;
}

.login-card {
    width: 100%;
    max-width: 420px;
    margin: auto;
    background: #ffffff;
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.08);
}

.logo-area {
    text-align: center;
    margin-bottom: 35px;
}

.logo-circle {
    width: 75px;
    height: 75px;
    border-radius: 18px;
    background: #50A6A7;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    font-weight: bold;
    margin: 0 auto 15px;
}

.logo-area h1 {
    color: #2c3e3e;
    font-size: 28px;
    margin-bottom: 5px;
}

.logo-area p {
    color: #7a8585;
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 7px;
    color: #3c4949;
    font-size: 14px;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    height: 46px;
    padding: 0 14px;
    border: 1px solid #d9e2e2;
    border-radius: 8px;
    outline: none;
    font-size: 15px;
    transition: 0.2s;
}

.form-group input:focus {
    border-color: #50A6A7;
    box-shadow: 0 0 0 3px rgba(80, 166, 167, 0.12);
}

.btn-login {
    width: 100%;
    height: 48px;
    border: none;
    border-radius: 8px;
    background: #50A6A7;
    color: #ffffff;
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.2s;
}

.btn-login:hover {
    background: #438f90;
}

.alert-error {
    background: #fff1f1;
    color: #b42318;
    border: 1px solid #ffd4d4;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}