#bg {
    position: fixed;
    inset: 0;
    background-image: linear-gradient(125deg, rgba(7, 34, 48, 0.68), rgba(7, 34, 48, 0.4)), url("../img/login_background.jpg");
    background-size: cover;
    background-position: center;
    filter: saturate(1.05);
    transform: scale(1.02);
}

body {
    margin: 0 !important;
    min-height: 100vh;
    padding: 20px;
    display: grid;
    place-items: center;
    overflow: hidden;
    font-family: "Be Vietnam Pro", "Noto Sans", "Segoe UI", Roboto, Arial, sans-serif;
    color: #0f172a;
}

.login-shell {
    position: relative;
    z-index: 1;
    width: min(430px, 92vw);
    animation: loginRise 0.45s ease-out;
}

.login-card {
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(255, 255, 255, 0.75);
    box-shadow: 0 22px 56px rgba(8, 47, 73, 0.25);
    border-radius: 24px;
    padding: 28px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.login-brand {
    text-align: center;
    margin-bottom: 18px;
}

.login-brand img {
    width: 56px;
    height: 56px;
    margin-bottom: 10px;
}

.login-brand h1 {
    margin: 0;
    font-family: "Be Vietnam Pro", "Noto Sans", "Segoe UI", Roboto, Arial, sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #0f172a;
}

.login-brand p {
    margin: 8px 0 0;
    font-size: 0.9rem;
    color: #4b5563;
}

.login-form {
    display: grid;
    gap: 12px;
}

.form-field {
    display: grid;
    gap: 6px;
}

.form-field label {
    font-size: 0.82rem;
    font-weight: 600;
    color: #334155;
}

.login-form input {
    width: 100%;
    border: 1.5px solid #cbd5e1;
    border-radius: 12px;
    padding: 11px 12px;
    background: #f8fafc;
    font-size: 0.93rem;
    color: #0f172a;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.login-form input::placeholder {
    color: #94a3b8;
}

.login-form input:focus {
    border-color: #0f766e;
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.12);
}

.form-submit {
    margin-top: 8px;
}

.login-btn {
    width: 100%;
    border: none;
    border-radius: 12px;
    padding: 11px 14px;
    background: linear-gradient(135deg, #14b8a6 0%, #0f766e 100%);
    color: #ffffff;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.16s ease, box-shadow 0.2s ease, filter 0.2s ease;
    box-shadow: 0 10px 24px rgba(15, 118, 110, 0.32);
}

.login-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 28px rgba(15, 118, 110, 0.35);
    filter: brightness(1.03);
}

.login-btn:active {
    transform: translateY(0);
}

@keyframes loginRise {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 540px) {
    body {
        padding: 14px;
    }

    .login-card {
        padding: 22px 18px;
        border-radius: 20px;
    }
}