:root {
    --login-bg: #061019;
    --login-panel: rgba(8, 18, 30, 0.9);
    --login-line: rgba(109, 193, 255, 0.18);
    --login-text: #e4f1ff;
    --login-muted: #8ea9c5;
    --login-accent: #63d0ff;
    --login-accent-2: #4ee2a9;
    --login-danger: #ff8f8f;
    --login-shadow: 0 30px 90px rgba(0, 0, 0, 0.35);
}

* {
    box-sizing: border-box;
}

body,
html {
    margin: 0;
    min-height: 100%;
}

.login-body {
    min-height: 100vh;
    font-family: "IBM Plex Sans", "PingFang SC", sans-serif;
    color: var(--login-text);
    background:
        radial-gradient(circle at top left, rgba(99, 208, 255, 0.18), transparent 28%),
        radial-gradient(circle at bottom right, rgba(78, 226, 169, 0.14), transparent 26%),
        linear-gradient(135deg, #07111b 0%, #0a1723 48%, #061019 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.login-layout {
    width: min(1080px, 100%);
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(360px, 420px);
    gap: 24px;
}

.login-brand,
.login-panel {
    position: relative;
    border-radius: 28px;
    border: 1px solid var(--login-line);
    background: var(--login-panel);
    box-shadow: var(--login-shadow);
    overflow: hidden;
}

.login-brand {
    padding: 40px;
}

.login-brand::before,
.login-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(125deg, rgba(99, 208, 255, 0.08), transparent 35%, transparent 70%, rgba(78, 226, 169, 0.08));
}

.login-panel {
    padding: 32px;
}

.login-kicker {
    margin: 0 0 10px;
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--login-accent);
}

.login-brand h1,
.login-panel h2 {
    margin: 0;
}

.login-brand h1 {
    font-size: 48px;
    line-height: 1.04;
    max-width: 420px;
}

.login-brand p,
.login-panel-head p {
    color: var(--login-muted);
    line-height: 1.75;
}

.login-feature-list {
    margin: 28px 0 0;
    padding-left: 18px;
    color: var(--login-text);
    line-height: 2;
}

.login-panel-head {
    margin-bottom: 20px;
}

.login-error {
    margin-bottom: 16px;
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid rgba(255, 143, 143, 0.24);
    background: rgba(255, 143, 143, 0.12);
    color: #ffd4d4;
}

label {
    display: block;
    margin-bottom: 16px;
}

label span {
    display: block;
    margin-bottom: 8px;
    color: var(--login-muted);
}

input {
    width: 100%;
    border: 1px solid var(--login-line);
    border-radius: 16px;
    padding: 14px 16px;
    background: rgba(4, 11, 20, 0.82);
    color: var(--login-text);
    font: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus {
    outline: none;
    border-color: rgba(99, 208, 255, 0.55);
    box-shadow: 0 0 0 4px rgba(99, 208, 255, 0.12);
}

.captcha-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 132px;
    gap: 12px;
    align-items: center;
}

.captcha-image {
    width: 132px;
    height: 44px;
    border-radius: 14px;
    border: 1px solid var(--login-line);
    background: rgba(4, 11, 20, 0.82);
    cursor: pointer;
}

.login-submit {
    width: 100%;
    border: none;
    border-radius: 999px;
    padding: 14px 18px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    color: #04111b;
    background: linear-gradient(135deg, var(--login-accent), var(--login-accent-2));
    box-shadow: 0 16px 34px rgba(99, 208, 255, 0.22);
}

.login-entry-switch {
    margin-top: 18px;
    color: var(--login-muted);
    text-align: center;
    font-size: 14px;
}

.login-entry-switch a {
    margin-left: 8px;
    color: var(--login-accent);
    text-decoration: none;
    font-weight: 700;
}

.login-entry-switch a:hover {
    text-decoration: underline;
}

@media (max-width: 920px) {
    .login-layout {
        grid-template-columns: 1fr;
    }

    .login-brand h1 {
        font-size: 38px;
    }
}

@media (max-width: 560px) {
    .login-brand,
    .login-panel {
        padding: 24px;
        border-radius: 22px;
    }

    .login-brand h1 {
        font-size: 32px;
    }

    .captcha-row {
        grid-template-columns: 1fr;
    }

    .captcha-image {
        width: 100%;
    }
}