:root {
    --register-bg: #f4f1ea;
    --register-panel: rgba(255, 255, 255, 0.94);
    --register-line: rgba(27, 37, 33, 0.12);
    --register-text: #182019;
    --register-muted: #687067;
    --register-accent: #1d5a43;
    --register-danger: #b42318;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 16px;
    background:
        radial-gradient(circle at top, rgba(196, 179, 137, 0.18), transparent 30%),
        linear-gradient(180deg, #fbfaf7 0%, var(--register-bg) 100%);
    color: var(--register-text);
    font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

a,
a:hover {
    color: var(--register-accent);
    text-decoration: none;
}

.auth-card {
    width: min(440px, 100%);
    padding: 28px 24px;
    border: 1px solid rgba(255, 255, 255, 0.75);
    border-radius: 20px;
    background: var(--register-panel);
    box-shadow: 0 18px 48px rgba(36, 30, 17, 0.08);
    backdrop-filter: blur(10px);
}

.auth-card h1 {
    margin: 0 0 8px;
    font-size: 28px;
}

.auth-subtitle {
    margin: 0 0 18px;
    color: var(--register-muted);
    font-size: 14px;
    line-height: 1.7;
}

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

.auth-field {
    display: grid;
    gap: 6px;
    font-size: 13px;
    color: var(--register-muted);
}

.auth-field-tip {
    font-size: 12px;
    color: var(--register-muted);
    line-height: 1.5;
}

.auth-field input {
    width: 100%;
    min-height: 46px;
    padding: 0 14px;
    border: 1px solid var(--register-line);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.96);
    color: var(--register-text);
    font: inherit;
}

.auth-submit {
    min-height: 46px;
    border: 0;
    border-radius: 12px;
    background: var(--register-accent);
    color: #fff;
    font: inherit;
    cursor: pointer;
}

.auth-submit:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.auth-message {
    min-height: 20px;
    margin: 4px 0 0;
    font-size: 13px;
    color: var(--register-danger);
}

.auth-message.is-success {
    color: var(--register-accent);
}

.auth-footer {
    margin-top: 14px;
    font-size: 13px;
    color: var(--register-muted);
}

@media (max-width: 640px) {
    .auth-card {
        padding: 22px 18px;
        border-radius: 16px;
    }

    .auth-card h1 {
        font-size: 24px;
    }
}