:root {
    --bg: #06131a;
    --bg2: #102531;
    --card: rgba(7, 19, 26, 0.78);
    --line: rgba(255, 255, 255, 0.14);
    --text: #f3f6f8;
    --muted: #9db1bb;
    --accent: #f4b942;
    --accent-2: #7ad1c2;
    --danger: #ff7b72;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(244, 185, 66, 0.22), transparent 32%),
        radial-gradient(circle at bottom right, rgba(122, 209, 194, 0.18), transparent 34%),
        linear-gradient(135deg, var(--bg), var(--bg2));
}

.login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-card {
    width: min(100%, 420px);
    padding: 32px 28px;
    border-radius: 24px;
    background: var(--card);
    border: 1px solid var(--line);
    backdrop-filter: blur(16px);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.32);
}

.eyebrow {
    margin: 0 0 10px;
    color: var(--accent);
    letter-spacing: 0.22em;
    font-size: 12px;
    font-weight: 800;
}

h1 {
    margin: 0;
    font-size: 42px;
    line-height: 1;
}

.subcopy {
    margin: 14px 0 24px;
    color: var(--muted);
    line-height: 1.6;
}

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

.login-form label {
    font-size: 14px;
    color: var(--muted);
}

.login-form input {
    width: 100%;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
    border-radius: 14px;
    padding: 14px 16px;
    font-size: 16px;
}

.login-form button {
    margin-top: 6px;
    border: 0;
    border-radius: 14px;
    padding: 14px 16px;
    font-size: 16px;
    font-weight: 800;
    color: #071016;
    background: linear-gradient(135deg, var(--accent), #ffd978);
    cursor: pointer;
}

.login-form button:disabled {
    opacity: 0.7;
    cursor: wait;
}

.login-message {
    min-height: 22px;
    margin: 0;
    color: var(--danger);
    font-size: 14px;
}

.login-message.is-ok {
    color: var(--accent-2);
}

.login-hint {
    margin-top: 18px;
    color: var(--muted);
    font-size: 13px;
}

code {
    color: var(--accent);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (max-width: 520px) {
    .login-card {
        padding: 24px 20px;
    }

    h1 {
        font-size: 34px;
    }
}