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

body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    font-family: Arial, Helvetica, sans-serif;
    background:
        linear-gradient(
            135deg,
            rgba(16, 83, 136, 0.08),
            rgba(64, 148, 87, 0.12)
        ),
        #f4f7f9;
    color: #24323d;
}

.login-container {
    width: 100%;
    max-width: 460px;
}

.login-box {
    width: 100%;
    padding: 42px 36px;
    background: #ffffff;
    border-radius: 22px;
    box-shadow: 0 20px 50px rgba(31, 53, 68, 0.14);
    text-align: center;
}

.logo {
    display: block;
    width: 190px;
    max-width: 80%;
    height: auto;
    margin: 0 auto 24px;
}

.login-box h1 {
    margin-bottom: 8px;
    font-size: 29px;
    line-height: 1.2;
    color: #18588a;
}

.login-box > p {
    margin-bottom: 30px;
    color: #66737d;
    font-size: 16px;
}

form {
    text-align: left;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
    color: #32434f;
}

input {
    width: 100%;
    margin-bottom: 20px;
    padding: 14px 15px;
    border: 1px solid #ccd7de;
    border-radius: 10px;
    background: #ffffff;
    color: #24323d;
    font-size: 16px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus {
    border-color: #27815c;
    outline: none;
    box-shadow: 0 0 0 4px rgba(39, 129, 92, 0.12);
}

button {
    width: 100%;
    margin-top: 4px;
    padding: 15px;
    border: 0;
    border-radius: 10px;
    background: linear-gradient(135deg, #18588a, #27815c);
    color: #ffffff;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 22px rgba(24, 88, 138, 0.22);
}

button:active {
    transform: translateY(0);
}

.error {
    margin-bottom: 20px;
    padding: 12px 14px;
    border-radius: 10px;
    background: #fdeaea;
    color: #a12626;
    text-align: left;
    font-size: 14px;
}

@media (max-width: 520px) {
    body {
        padding: 16px;
    }

    .login-box {
        padding: 32px 22px;
        border-radius: 18px;
    }

    .login-box h1 {
        font-size: 24px;
    }

    .logo {
        width: 160px;
    }
}