/* =========================================================
   小涵互联 · 登录 / 注册 / 找回密码 统一视觉（auth.css）
   依赖 theme.css 的 --xh-* token 与 nav.css 的统一导航
   ========================================================= */

body.auth-body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(1100px 620px at 12% -8%, rgba(var(--xh-primary-rgb), .22), transparent 62%),
        radial-gradient(900px 520px at 92% 6%, rgba(var(--xh-primary-2-rgb), .20), transparent 60%),
        var(--xh-bg, #070b16);
    color: var(--xh-text, #eaf1ff);
    font-family: var(--xh-font, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif);
    display: flex;
    flex-direction: column;
}

/* 背景光斑 */
.auth-body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(var(--xh-w), var(--xh-w), var(--xh-w), .022) 1px, transparent 1px),
        linear-gradient(90deg, rgba(var(--xh-w), var(--xh-w), var(--xh-w), .022) 1px, transparent 1px);
    background-size: 46px 46px;
    mask-image: radial-gradient(circle at 50% 20%, #000 30%, transparent 78%);
    -webkit-mask-image: radial-gradient(circle at 50% 20%, #000 30%, transparent 78%);
}

.auth-main {
    position: relative;
    z-index: 1;
    flex: 1 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 34px 20px 42px;
}

/* ---------------- 外壳 ---------------- */
.auth-shell {
    width: 100%;
    max-width: 980px;
    display: grid;
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
    border-radius: 24px;
    overflow: hidden;
    background: linear-gradient(180deg, rgba(20, 29, 48, .82), rgba(12, 18, 31, .92));
    border: 1px solid var(--xh-line-strong, rgba(var(--xh-w), var(--xh-w), var(--xh-w), .16));
    box-shadow: 0 40px 90px rgba(var(--xh-k), var(--xh-k), var(--xh-k), .55), 0 0 0 1px rgba(var(--xh-w), var(--xh-w), var(--xh-w), .03) inset;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

/* ---------------- 左侧品牌区 ---------------- */
.auth-brand {
    position: relative;
    padding: 42px 38px;
    display: flex;
    flex-direction: column;
    gap: 22px;
    background:
        radial-gradient(520px 320px at 8% 0%, rgba(var(--xh-primary-rgb), .34), transparent 68%),
        radial-gradient(420px 320px at 100% 100%, rgba(var(--xh-primary-2-rgb), .30), transparent 66%),
        linear-gradient(160deg, rgba(24, 35, 60, .92), rgba(11, 16, 28, .96));
    overflow: hidden;
}

.auth-brand::after {
    content: "";
    position: absolute;
    width: 320px;
    height: 320px;
    right: -130px;
    bottom: -140px;
    border-radius: 50%;
    border: 1px solid rgba(var(--xh-w), var(--xh-w), var(--xh-w), .10);
    box-shadow: 0 0 0 42px rgba(var(--xh-w), var(--xh-w), var(--xh-w), .03), 0 0 0 88px rgba(var(--xh-w), var(--xh-w), var(--xh-w), .02);
    pointer-events: none;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.brand-mark img {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    object-fit: cover;
    border: 1px solid rgba(var(--xh-w), var(--xh-w), var(--xh-w), .18);
    background: rgba(var(--xh-w), var(--xh-w), var(--xh-w), .06);
    box-shadow: 0 10px 26px rgba(var(--xh-k), var(--xh-k), var(--xh-k), .35);
}

.brand-mark .brand-text b {
    display: block;
    font-size: 17px;
    letter-spacing: .3px;
}

.brand-mark .brand-text span {
    display: block;
    font-size: 12px;
    color: var(--xh-muted, #8fa2c2);
}

.auth-brand h1 {
    margin: 0;
    font-size: 26px;
    line-height: 1.35;
    letter-spacing: .2px;
    font-weight: 700;
    background: linear-gradient(120deg, #ffffff, #b9cdff 62%, #cbb8ff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.auth-brand .brand-sub {
    margin: -8px 0 0;
    font-size: 13.5px;
    line-height: 1.7;
    color: var(--xh-text-2, #c7d6f2);
}

.brand-points {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.brand-points li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    line-height: 1.6;
    color: var(--xh-text-2, #c7d6f2);
}

.brand-points .dot {
    flex: 0 0 auto;
    width: 18px;
    height: 18px;
    margin-top: 1px;
    border-radius: 50%;
    background: rgba(var(--xh-primary-rgb), .16);
    border: 1px solid rgba(var(--xh-primary-rgb), .45);
    position: relative;
}

.brand-points .dot::after {
    content: "";
    position: absolute;
    inset: 4px;
    border-radius: 50%;
    background: var(--xh-primary-grad, linear-gradient(120deg, #4f8cff, #7a5cff));
}

.brand-notice {
    margin-top: auto;
    padding: 12px 14px;
    border-radius: var(--xh-radius, 14px);
    border: 1px solid rgba(255, 180, 84, .28);
    background: rgba(255, 180, 84, .08);
    color: #ffd9a8;
    font-size: 12.2px;
    line-height: 1.65;
    max-height: 132px;
    overflow: auto;
}

/* ---------------- 右侧表单区 ---------------- */
.auth-card {
    padding: 40px 38px 34px;
    background: rgba(9, 14, 25, .55);
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.card-head h2 {
    margin: 0 0 6px;
    font-size: 22px;
    letter-spacing: .2px;
}

.card-head p {
    margin: 0;
    font-size: 13px;
    color: var(--xh-muted, #8fa2c2);
}

/* 登录方式切换 */
.auth-tabs {
    display: flex;
    gap: 4px;
    padding: 4px;
    border-radius: var(--xh-radius-pill, 999px);
    background: rgba(var(--xh-w), var(--xh-w), var(--xh-w), .05);
    border: 1px solid var(--xh-line, rgba(var(--xh-w), var(--xh-w), var(--xh-w), .09));
}

.auth-tab {
    flex: 1 1 0;
    height: 34px;
    border: 0;
    border-radius: var(--xh-radius-pill, 999px);
    background: transparent;
    color: var(--xh-muted, #8fa2c2);
    font-size: 13px;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: background .18s, color .18s, box-shadow .18s;
}

.auth-tab:hover { color: var(--xh-text, #eaf1ff); }

.auth-tab.active {
    color: #fff;
    background: var(--xh-primary-grad, linear-gradient(120deg, #4f8cff, #7a5cff));
    box-shadow: 0 8px 20px rgba(var(--xh-primary-rgb), .28);
}

/* 表单 */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.field > span {
    font-size: 12.5px;
    color: var(--xh-muted, #8fa2c2);
    letter-spacing: .2px;
}

.field-box {
    display: flex;
    align-items: center;
    gap: 10px;
    height: 46px;
    padding: 0 12px;
    border-radius: var(--xh-radius, 14px);
    border: 1px solid var(--xh-line-strong, rgba(var(--xh-w), var(--xh-w), var(--xh-w), .16));
    background: rgba(var(--xh-w), var(--xh-w), var(--xh-w), .04);
    transition: border-color .18s, box-shadow .18s, background .18s;
}

.field-box:focus-within {
    border-color: rgba(var(--xh-primary-rgb), .75);
    background: rgba(var(--xh-primary-rgb), .07);
    box-shadow: var(--xh-ring, 0 0 0 4px rgba(var(--xh-primary-rgb), .14));
}

.field-box .ico {
    width: 17px;
    height: 17px;
    flex: 0 0 auto;
    fill: var(--xh-faint, #5d6f8f);
    transition: fill .18s;
}

.field-box:focus-within .ico { fill: var(--xh-primary, #4f8cff); }

.field-box input {
    flex: 1 1 auto;
    min-width: 0;
    height: 100%;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--xh-text, #eaf1ff);
    font-size: 14px;
    font-family: inherit;
}

.field-box input::placeholder { color: var(--xh-faint, #5d6f8f); }

.field-box .eye {
    flex: 0 0 auto;
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 8px;
    background: transparent;
    cursor: pointer;
    color: var(--xh-faint, #5d6f8f);
}

.field-box .eye .ico { fill: currentColor; }
.field-box .eye.on { color: var(--xh-primary, #4f8cff); }

/* 验证码行 */
.code-row {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.code-row .field-box { flex: 1 1 auto; }

.code-btn {
    flex: 0 0 auto;
    min-width: 112px;
    height: 46px;
    padding: 0 14px;
    border-radius: var(--xh-radius, 14px);
    border: 1px solid rgba(var(--xh-primary-rgb), .45);
    background: rgba(var(--xh-primary-rgb), .12);
    color: #cfe0ff;
    font-size: 13px;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: background .18s, color .18s, opacity .18s;
    white-space: nowrap;
}

.code-btn:hover:not(:disabled) { background: rgba(var(--xh-primary-rgb), .22); color: #fff; }
.code-btn:disabled { opacity: .55; cursor: not-allowed; }

/* 行内辅助 */
.row-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.check {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 12.5px;
    color: var(--xh-text-2, #c7d6f2);
    cursor: pointer;
    user-select: none;
}

.check input {
    width: 15px;
    height: 15px;
    accent-color: var(--xh-primary, #4f8cff);
}

.link-muted {
    font-size: 12.5px;
    color: var(--xh-muted, #8fa2c2);
    text-decoration: none;
    transition: color .16s;
}

.link-muted:hover { color: var(--xh-primary, #4f8cff); }

/* 主按钮 */
.btn-primary {
    height: 48px;
    border: 0;
    border-radius: var(--xh-radius, 14px);
    background: var(--xh-primary-grad, linear-gradient(120deg, #4f8cff, #7a5cff));
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 2px;
    font-family: inherit;
    cursor: pointer;
    box-shadow: 0 16px 34px rgba(var(--xh-primary-rgb), .30);
    transition: transform .16s var(--xh-ease, ease), box-shadow .16s, opacity .16s;
}

.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 20px 42px rgba(var(--xh-primary-rgb), .38); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: .6; cursor: not-allowed; transform: none; }

.btn-line {
    height: 46px;
    border-radius: var(--xh-radius, 14px);
    border: 1px solid var(--xh-line-strong, rgba(var(--xh-w), var(--xh-w), var(--xh-w), .16));
    background: rgba(var(--xh-w), var(--xh-w), var(--xh-w), .05);
    color: var(--xh-text, #eaf1ff);
    font-size: 14px;
    font-family: inherit;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background .18s;
}

.btn-line:hover { background: rgba(var(--xh-w), var(--xh-w), var(--xh-w), .09); }

/* 提示条 */
.alert {
    padding: 11px 13px;
    border-radius: var(--xh-radius-sm, 10px);
    font-size: 12.8px;
    line-height: 1.6;
    border: 1px solid transparent;
}

.alert-error {
    color: #ffd0d8;
    background: rgba(255, 107, 129, .12);
    border-color: rgba(255, 107, 129, .32);
}

.alert-ok {
    color: #c9ffe9;
    background: rgba(61, 220, 151, .10);
    border-color: rgba(61, 220, 151, .30);
}

.alert-info {
    color: #d5e3ff;
    background: rgba(var(--xh-primary-rgb), .10);
    border-color: rgba(var(--xh-primary-rgb), .28);
}

.switch-line {
    margin: 2px 0 0;
    font-size: 13px;
    color: var(--xh-muted, #8fa2c2);
    text-align: center;
}

.switch-line a {
    color: var(--xh-primary, #4f8cff);
    text-decoration: none;
    font-weight: 600;
}

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

.auth-foot {
    flex: 0 0 auto;
    padding: 16px 20px 26px;
    text-align: center;
    font-size: 12px;
    color: var(--xh-faint, #5d6f8f);
}

.auth-foot a { color: var(--xh-muted, #8fa2c2); text-decoration: none; }
.auth-foot a:hover { color: var(--xh-primary, #4f8cff); }

/* 隐藏/显示表单面板 */
.auth-pane[hidden] { display: none !important; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 860px) {
    .auth-shell { grid-template-columns: 1fr; max-width: 520px; border-radius: 20px; }
    .auth-brand { padding: 26px 24px 22px; gap: 14px; }
    .auth-brand h1 { font-size: 21px; }
    .brand-points { gap: 8px; }
    .auth-brand::after { display: none; }
    .brand-notice { margin-top: 4px; }
    .auth-card { padding: 26px 22px 24px; }
}

@media (max-width: 420px) {
    .auth-main { padding: 18px 12px 26px; }
    .auth-card { padding: 22px 16px 20px; }
    .code-btn { min-width: 96px; padding: 0 10px; font-size: 12px; }
}

/* 注册页 · 协议勾选（版本号随后台当前生效版本渲染） */
.agree-check { align-items: flex-start; line-height: 1.6; }
.agree-check a { color: var(--xh-primary, #3b82f6); text-decoration: none; }
.agree-check a:hover { text-decoration: underline; }
.agree-check .ver { font-style: normal; opacity: .55; font-size: 11px; margin-left: 2px; }