@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "PingFang SC", "Noto Sans SC", sans-serif;
    color: #f4f7fb;
    background:
        radial-gradient(circle at top left, rgba(61, 126, 255, 0.28), transparent 32%),
        radial-gradient(circle at bottom right, rgba(32, 187, 45, 0.18), transparent 28%),
        linear-gradient(135deg, #0b1117 0%, #101923 52%, #0e141b 100%);
}

.login-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
}

.login-card {
    width: min(480px, 100%);
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 28px;
    background: rgba(13, 20, 28, 0.86);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(18px);
}

.login-brand {
    display: flex;
    gap: 18px;
    align-items: center;
    justify-content: center;
}

.login-logo {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    object-fit: contain;
    background: rgba(255, 255, 255, 0.04);
    padding: 10px;
}

.login-brand h1 {
    margin: 0;
    font-size: 30px;
    line-height: 1.2;
    text-align: center;
}

.login-form {
    margin-top: 32px;
    display: grid;
    gap: 16px;
}

.field {
    display: grid;
    gap: 8px;
}

.field span {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.68);
}

.field input {
    width: 100%;
    height: 52px;
    padding: 0 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.04);
    color: #fff;
    outline: none;
}

.field input:focus {
    border-color: rgba(61, 126, 255, 0.8);
    box-shadow: 0 0 0 3px rgba(61, 126, 255, 0.18);
}

.login-btn {
    height: 54px;
    border: 0;
    border-radius: 16px;
    background: linear-gradient(135deg, #3d7eff 0%, #26b0ff 100%);
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
}

.login-feedback {
    margin-top: 18px;
    padding: 14px 16px;
    border-radius: 14px;
    background: rgba(255, 122, 89, 0.15);
    color: #ffd7ca;
    line-height: 1.6;
}

@media (max-width: 640px) {
    .login-shell {
        padding: 20px;
    }

    .login-card {
        padding: 24px;
        border-radius: 22px;
    }

    .login-brand {
        align-items: flex-start;
        flex-direction: column;
    }
}