* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Inter', sans-serif;
    color: #fff;
    background:
        radial-gradient(circle at 20% 20%, rgba(255, 47, 91, .18), transparent 32%),
        radial-gradient(circle at 80% 20%, rgba(126, 87, 194, .20), transparent 35%),
        linear-gradient(135deg, #07080c 0%, #111522 50%, #050508 100%);
}

.login-container {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    padding: 56px;
    gap: 48px;
}

.brand-panel {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.brand-logo h1 {
    font-size: 86px;
    letter-spacing: 8px;
    margin: 0;
    font-weight: 800;
}

.brand-logo span {
    color: #ff365f;
    letter-spacing: 14px;
    font-size: 26px;
    font-weight: 700;
}

.brand-subtitle {
    margin-top: 28px;
    color: #b8bdcc;
    font-size: 20px;
}

.system-info {
    margin-top: 56px;
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
}

.info-box {
    min-width: 170px;
    padding: 18px 20px;
    border: 1px solid rgba(255,255,255,.12);
    background: rgba(255,255,255,.055);
    border-radius: 18px;
    backdrop-filter: blur(16px);
}

.info-box small {
    color: #9ea4b8;
}

.info-box strong {
    display: block;
    margin-top: 6px;
    font-size: 16px;
}

.login-panel {
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    width: 100%;
    max-width: 520px;
    padding: 46px;
    border-radius: 28px;
    border: 1px solid rgba(255,255,255,.14);
    background: rgba(12, 14, 24, .72);
    box-shadow: 0 30px 80px rgba(0,0,0,.45);
    backdrop-filter: blur(24px);
}

.login-icon {
    width: 88px;
    height: 88px;
    margin: 0 auto 28px;
    border-radius: 50%;
    border: 1px solid rgba(255,54,95,.45);
    display: grid;
    place-items: center;
    color: #ff365f;
    font-size: 34px;
}

.login-card h2 {
    text-align: center;
    font-size: 30px;
    margin: 0;
}

.login-card p {
    text-align: center;
    color: #aeb4c7;
    margin: 10px 0 34px;
}

.alert {
    background: rgba(255,54,95,.12);
    border: 1px solid rgba(255,54,95,.35);
    color: #ffd8df;
    padding: 14px 16px;
    border-radius: 14px;
    margin-bottom: 22px;
}

label {
    display: block;
    margin: 20px 0 9px;
    color: #f1f2f7;
    font-weight: 500;
}

input {
    width: 100%;
    height: 58px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,.13);
    background: rgba(255,255,255,.055);
    color: #fff;
    padding: 0 18px;
    font-size: 16px;
    outline: none;
}

input:focus {
    border-color: rgba(255,54,95,.7);
    box-shadow: 0 0 0 4px rgba(255,54,95,.12);
}

button {
    width: 100%;
    height: 62px;
    margin-top: 30px;
    border: 0;
    border-radius: 14px;
    cursor: pointer;
    color: #fff;
    font-size: 17px;
    font-weight: 800;
    letter-spacing: 1px;
    background: linear-gradient(135deg, #ff315f, #b51472);
    box-shadow: 0 14px 34px rgba(255,49,95,.28);
}

button:hover {
    transform: translateY(-1px);
}

.version {
    margin-top: 34px;
    text-align: center;
    color: #858ca0;
    font-size: 13px;
}

@media (max-width: 900px) {
    .login-container {
        grid-template-columns: 1fr;
        padding: 28px;
    }

    .brand-panel {
        text-align: center;
    }

    .brand-logo h1 {
        font-size: 56px;
    }

    .brand-logo span {
        font-size: 18px;
        letter-spacing: 9px;
    }

    .system-info {
        justify-content: center;
        margin-top: 30px;
    }

    .login-card {
        padding: 32px 24px;
    }
}

.btn-back{

    width:100%;

    height:56px;

    margin-top:12px;

    border:1px solid rgba(255,255,255,.12);

    background:transparent;

    color:#ffffff;

    border-radius:14px;

    cursor:pointer;

    transition:.2s;

    font-size:15px;

}

.btn-back:hover{

    background:rgba(255,255,255,.06);

}

.success{

    background:#e8f8ec;

    color:#1d7a38;

    border:1px solid #b7e2c1;

    padding:12px;

    border-radius:8px;

    margin-bottom:15px;

    text-align:center;

    font-weight:600;

}