/* ============================================================
   用户系统页面(登录 / 注册 / 个人中心)
   黑白高对比 · 电影感排版,独立于站点前台与管理后台
   ============================================================ */
:root {
  --u-bg: #0a0a0a;
  --u-bg2: #101010;
  --u-panel: #141414;
  --u-line: #262626;
  --u-line-hi: #3a3a3a;
  --u-fg: #f5f5f5;
  --u-dim: #9a9a9a;
  --u-faint: #6b6b6b;
  --u-accent: #ffffff;
  --u-err: #ff6b6b;
  --u-ok: #7ee2a8;
  --u-pend: #e8c46a;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
.u-body {
  margin: 0; min-height: 100vh; min-height: 100dvh;
  background: var(--u-bg); color: var(--u-fg);
  font: 15px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  letter-spacing: .01em;
}
a { color: inherit; text-decoration: none; }
img { display: block; }
.u-split { min-height: 100vh; min-height: 100dvh; display: grid; grid-template-columns: minmax(0, 1fr) minmax(420px, 1fr); }
.u-brand { position: relative; overflow: hidden; display: flex; align-items: center; padding: 8vw; border-right: 1px solid var(--u-line); background: radial-gradient(circle at 20% 30%, #1c1c1c 0, var(--u-bg) 48%); }
.u-brand::before { content: ''; position: absolute; inset: 0; opacity: .13; pointer-events: none; background-image: radial-gradient(#fff .6px, transparent .6px); background-size: 5px 5px; }
.u-brand-inner { position: relative; max-width: 560px; }
.u-logo { display: inline-flex; align-items: center; gap: 12px; color: var(--u-dim); }
.u-logo img { width: 30px; height: 30px; border-radius: 9px; object-fit: cover; border: 1px solid var(--u-line-hi); }
.u-logo-ring { position: relative; display: block; width: 44px; height: 44px; padding: 3px; border: 1px solid var(--u-line-hi); border-radius: 14px; background: linear-gradient(160deg, #1d1d1d, #0f0f0f); box-shadow: 0 6px 22px rgba(0,0,0,.4); }
.u-logo-ring img { width: 100%; height: 100%; border-radius: 11px; object-fit: cover; }
.u-logo-ring::after { content: ''; position: absolute; top: -3px; right: -3px; width: 9px; height: 9px; border-radius: 50%; background: var(--u-ok); border: 2px solid var(--u-bg); box-shadow: 0 0 10px var(--u-ok); }
.u-logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.u-logo-text b { color: var(--u-fg); font-size: 15px; letter-spacing: .06em; font-weight: 700; }
.u-logo-text i { color: var(--u-faint); font-style: normal; font-size: 10px; letter-spacing: .28em; text-transform: uppercase; }
.u-brand-mark { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 6px; }
.u-brand-live { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border: 1px solid var(--u-line); border-radius: 999px; color: var(--u-ok); font-size: 10px; letter-spacing: .2em; background: rgba(126,226,168,.05); }
.u-hero-title { margin: 78px 0 18px; font-size: clamp(34px, 4.6vw, 58px); line-height: 1.08; letter-spacing: .02em; font-weight: 800; }
.u-hero-sub { color: var(--u-dim); max-width: 390px; margin: 0; }
.u-hero-foot { margin-top: 58px; color: var(--u-faint); font-size: 12px; }
.u-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--u-ok); box-shadow: 0 0 12px var(--u-ok); margin-right: 5px; }
.u-form-side { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 20px; padding: 7vw; background: var(--u-bg2); }
.u-form-side-scroll { justify-content: flex-start; padding: 5vh 6vw; }
.u-card { width: min(100%, 480px); padding: 34px 34px 28px; border: 1px solid var(--u-line); border-radius: 8px; background: linear-gradient(145deg, #171717, #101010); box-shadow: 0 22px 80px rgba(0,0,0,.32); }
.u-card-center { text-align: center; }
.u-title { margin: 0; font-size: 30px; line-height: 1.2; letter-spacing: .02em; }
.u-title span { color: var(--u-faint); font-size: 12px; font-weight: 500; letter-spacing: .15em; }
.u-sub { color: var(--u-dim); margin: 11px 0 26px; }
.u-field { display: block; margin: 20px 0; }
.u-field span { display: block; color: var(--u-faint); font-size: 11px; text-transform: uppercase; letter-spacing: .14em; margin-bottom: 6px; }
.u-field input { width: 100%; padding: 11px 0; border: 0; border-bottom: 1px solid var(--u-line-hi); outline: 0; color: var(--u-fg); background: transparent; font: inherit; transition: border-color .2s; }
.u-field input:focus { border-color: var(--u-fg); }
.u-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 9px 18px; border: 1px solid transparent; border-radius: 999px; cursor: pointer; font: inherit; transition: transform .18s, opacity .18s, background .18s; }
.u-btn:hover { transform: translateY(-1px); }
.u-btn-primary { color: #0b0b0b; background: #f5f5f5; }
.u-btn-ghost { color: var(--u-fg); background: transparent; border-color: var(--u-line-hi); }
.u-btn-danger { color: #fff; background: #501e1e; border-color: #7b3030; }
form > .u-btn { width: 100%; margin-top: 12px; }
.u-alt { display: flex; justify-content: space-between; gap: 14px; margin-top: 20px; color: var(--u-dim); font-size: 13px; }
.u-link { color: var(--u-fg); border-bottom: 1px solid var(--u-line-hi); }
.u-link:hover { border-color: var(--u-fg); }
.u-tiny { color: var(--u-faint); font-size: 12px; }
.u-alert { padding: 11px 13px; border: 1px solid var(--u-line-hi); border-radius: 6px; font-size: 13px; }
.u-alert-err { color: var(--u-err); border-color: rgba(255,107,107,.34); background: rgba(255,107,107,.06); }
.u-alert-ok { color: var(--u-ok); border-color: rgba(126,226,168,.34); background: rgba(126,226,168,.06); }
.u-cap { margin: 24px 0 14px; }
.u-cap-track { position: relative; height: 48px; border: 1px solid var(--u-line-hi); border-radius: 999px; background: #0d0d0d; overflow: hidden; }
.u-cap-fill { position: absolute; inset: 0 auto 0 0; width: 0; background: rgba(255,255,255,.1); }
.u-cap-text { position: absolute; inset: 0; display: grid; place-items: center; color: var(--u-faint); font-size: 12px; }
.u-cap-knob { position: absolute; top: 4px; left: 4px; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; color: #111; background: #f5f5f5; cursor: grab; transition: box-shadow .2s; }
.u-cap-knob svg { width: 18px; height: 18px; }
.u-cap-knob.ok { color: #fff; background: var(--u-ok); }
.u-cap-knob.drag { cursor: grabbing; box-shadow: 0 0 0 4px rgba(255,255,255,.12); }
.u-cap-hint { margin: 7px 0 0; color: var(--u-faint); text-align: center; font-size: 12px; }
.u-mark { width: 54px; height: 54px; display: grid; place-items: center; margin: 0 auto 20px; border: 1px solid currentColor; border-radius: 50%; font-size: 26px; }
.u-mark.ok { color: var(--u-ok); }
.u-mark.no { color: var(--u-err); }
.u-avatar-row { display: flex; align-items: center; gap: 16px; margin: 0 0 18px; }
.u-av-big { width: 74px; height: 74px; border-radius: 20px; object-fit: cover; background: #191919; border: 1px solid var(--u-line-hi); }
.u-avatar-ctrl { flex: 1; min-width: 0; }
.u-avatar-ctrl .u-btn { width: auto; }
.u-users-title { margin: 0 0 16px; }
.u-users-title span { color: var(--u-faint); font-weight: 400; }
.u-users-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 9px; max-height: 300px; overflow: auto; }
.u-user-chip { min-width: 0; display: grid; grid-template-columns: 32px minmax(0,1fr); grid-template-rows: 18px 16px auto; column-gap: 9px; padding: 8px; border: 1px solid var(--u-line); border-radius: 8px; background: #111; }
.u-av { grid-row: 1 / span 2; width: 32px; height: 32px; overflow: hidden; border-radius: 10px; background: #222; }
.u-av img, .u-av-fb { width: 100%; height: 100%; object-fit: cover; display: flex; align-items: center; justify-content: center; }
.u-av-fb { color: var(--u-dim); font-size: 14px; }
.u-uname { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; }
.u-ustat { color: var(--u-ok); font-size: 10px; }
.u-ustat.off { color: var(--u-pend); }
.u-user-view { grid-column: 1 / -1; margin-top: 9px; padding: 6px 10px; border: 1px solid var(--u-line-hi); border-radius: 999px; background: transparent; color: var(--u-dim); font: inherit; font-size: 11px; letter-spacing: .08em; cursor: pointer; transition: color .18s, border-color .18s, background .18s; }
.u-user-view:hover { color: #0b0b0b; background: #f5f5f5; border-color: #f5f5f5; }

/* ---------- 用户信息弹窗 ---------- */
.u-modal-open { overflow: hidden; }
.u-user-modal { position: fixed; inset: 0; z-index: 60; display: flex; align-items: center; justify-content: center; padding: 22px; background: rgba(6,6,6,.72); backdrop-filter: blur(6px); opacity: 0; visibility: hidden; transition: opacity .26s, visibility .26s; }
.u-user-modal.show { opacity: 1; visibility: visible; }
.u-user-modal-panel { position: relative; width: min(100%, 420px); max-height: calc(100vh - 44px); overflow: auto; padding: 30px 28px 24px; border: 1px solid var(--u-line-hi); border-radius: 14px; background: linear-gradient(150deg, #181818, #0e0e0e); box-shadow: 0 30px 90px rgba(0,0,0,.6); transform: rotate(-6deg) scale(.9) translateY(14px); opacity: 0; transition: transform .4s cubic-bezier(.2,.9,.25,1.05), opacity .3s; }
.u-user-modal.show .u-user-modal-panel { transform: rotate(0) scale(1) translateY(0); opacity: 1; }
.u-user-modal-close { position: absolute; top: 12px; right: 14px; width: 32px; height: 32px; border: 1px solid var(--u-line-hi); border-radius: 50%; background: transparent; color: var(--u-dim); font-size: 18px; line-height: 1; cursor: pointer; transition: color .18s, border-color .18s; }
.u-user-modal-close:hover { color: var(--u-fg); border-color: var(--u-fg); }
.u-user-modal-head { display: flex; align-items: center; gap: 16px; }
.u-user-modal-head img { width: 68px; height: 68px; border-radius: 20px; object-fit: cover; border: 1px solid var(--u-line-hi); background: #181818; flex-shrink: 0; }
.u-user-modal-head h2 { margin: 2px 0 6px; font-size: 22px; letter-spacing: .03em; }
.u-user-modal-head .u-kicker { margin: 0 0 2px; }
.u-user-modal-status { display: inline-block; padding: 1px 9px; border-radius: 999px; font-size: 11px; }
.u-user-modal-status.ok { color: var(--u-ok); border: 1px solid rgba(126,226,168,.4); }
.u-user-modal-status.pending { color: var(--u-pend); border: 1px solid rgba(232,196,106,.4); }
.u-user-modal-info { margin: 24px 0 0; }
.u-user-modal-info > div { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding: 12px 0; border-top: 1px solid var(--u-line); }
.u-user-modal-info dt { color: var(--u-faint); font-size: 11px; text-transform: uppercase; letter-spacing: .14em; }
.u-user-modal-info dd { margin: 0; font-size: 14px; text-align: right; word-break: break-all; }

/* 个人中心 */
.u-page { min-height: 100vh; min-height: 100dvh; padding-bottom: 70px; background: var(--u-bg2); }
.u-topbar { position: sticky; top: 0; z-index: 30; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 5vw; border-bottom: 1px solid var(--u-line); background: rgba(12,12,12,.9); backdrop-filter: blur(8px); }
.u-nav { display: flex; align-items: center; gap: 20px; color: var(--u-dim); font-size: 13px; }
.u-nav a:hover { color: var(--u-fg); }
.u-profile { display: flex; align-items: center; gap: 18px; max-width: 760px; margin: 0 auto; padding: 42px 5vw 24px; }
.u-profile h1 { margin: 0 0 4px; font-size: 26px; letter-spacing: .02em; }
.u-profile .u-sub { margin: 0; }
.u-page > .u-alert { max-width: 760px; margin: 0 auto 16px; }
.u-card-flat { width: min(100%, 760px); margin: 18px auto; box-shadow: none; background: linear-gradient(145deg, #141414, #0f0f0f); }
.u-row2 { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 16px; align-items: end; }
.u-check { display: flex; align-items: center; gap: 8px; padding: 0 0 12px; color: var(--u-dim); font-size: 13px; white-space: nowrap; cursor: pointer; }
.u-check input { accent-color: #f5f5f5; }
.u-actions { display: flex; gap: 12px; margin-top: 18px; }
.u-actions .u-btn { width: auto; }
.u-btn-sm { min-height: 32px; padding: 5px 13px; font-size: 12px; }
.u-empty { color: var(--u-faint); font-size: 13px; padding: 16px 0; }
.u-card-users { background: linear-gradient(145deg, #141414, #0e0e0e); }
.u-split-center { align-items: center; }
.u-split-center .u-form-side { justify-content: center; }

/* 个人中心统计块 */
.u-stats { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; max-width: 760px; margin: 0 auto 6px; padding: 0 5vw; }
.u-stat { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 14px 10px; border: 1px solid var(--u-line); border-radius: 10px; background: linear-gradient(145deg, #141414, #0f0f0f); transition: border-color .18s, transform .18s; }
.u-stat:hover { border-color: var(--u-line-hi); transform: translateY(-2px); }
.u-stat b { color: var(--u-fg); font-size: 20px; letter-spacing: .02em; }
.u-stat i { color: var(--u-faint); font-style: normal; font-size: 11px; letter-spacing: .12em; }

/* 用户聊天 */
.chat-wrap { max-width: 760px; margin: 0 auto; padding: 8px 5vw 70px; }
.chat-wrap .u-card-flat { width: 100%; margin: 0; }
.chat-list { max-height: calc(100vh - 320px); min-height: 220px; overflow-y: auto; padding: 6px 2px 6px 0; scroll-behavior: smooth; }
.chat-list::-webkit-scrollbar { width: 6px; }
.chat-list::-webkit-scrollbar-thumb { background: #2c2c2c; border-radius: 3px; }
.chat-msg { display: flex; align-items: flex-start; gap: 10px; padding: 9px 4px; border-radius: 10px; }
.chat-msg:hover { background: rgba(255,255,255,.03); }
.chat-av { flex-shrink: 0; width: 34px; height: 34px; overflow: hidden; border-radius: 10px; background: #1d1d1d; border: 1px solid var(--u-line-hi); display: flex; align-items: center; justify-content: center; color: var(--u-dim); font-size: 14px; }
.chat-av img { width: 100%; height: 100%; object-fit: cover; }
.chat-main { flex: 1; min-width: 0; }
.chat-head { display: flex; align-items: baseline; gap: 8px; }
.chat-name { color: var(--u-dim); font-size: 12px; letter-spacing: .04em; }
.chat-msg.mine .chat-name { color: var(--u-fg); }
.chat-time { color: var(--u-faint); font-size: 11px; }
.chat-text { margin-top: 2px; font-size: 14px; line-height: 1.6; word-break: break-word; white-space: pre-wrap; }
.chat-del { flex-shrink: 0; align-self: center; padding: 3px 10px; border: 1px solid var(--u-line); border-radius: 999px; background: transparent; color: var(--u-faint); font: inherit; font-size: 11px; opacity: 0; cursor: pointer; transition: opacity .18s, color .18s, border-color .18s; }
.chat-msg:hover .chat-del { opacity: 1; }
.chat-del:hover { color: var(--u-err); border-color: rgba(255,107,107,.4); }
.chat-form { display: flex; align-items: center; gap: 10px; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--u-line); }
.chat-me { flex-shrink: 0; width: 34px; height: 34px; overflow: hidden; border-radius: 10px; border: 1px solid var(--u-line-hi); background: #1d1d1d; display: flex; align-items: center; justify-content: center; color: var(--u-dim); font-size: 14px; }
.chat-me img { width: 100%; height: 100%; object-fit: cover; }
.chat-form input[type="text"] { flex: 1; min-width: 0; padding: 10px 0; border: 0; border-bottom: 1px solid var(--u-line-hi); outline: 0; color: var(--u-fg); background: transparent; font: inherit; transition: border-color .2s; }
.chat-form input[type="text"]:focus { border-color: var(--u-fg); }
.chat-form .chat-send { width: auto; margin-top: 0; flex-shrink: 0; min-height: 38px; padding: 7px 20px; font-size: 13px; }
@media (max-width: 520px) { .chat-del { opacity: 1; } .u-stats { grid-template-columns: repeat(3, minmax(0,1fr)); gap: 8px; } .chat-form .chat-send { padding: 7px 14px; } }
@media (max-width: 520px) { .u-users-grid { grid-template-columns: 1fr; } .u-row2 { grid-template-columns: 1fr; } .u-user-modal-panel { transform: rotate(-3deg) scale(.94) translateY(10px); } }
.u-profile { display: flex; align-items: center; gap: 18px; margin-bottom: 26px; }
.u-profile-info h1 { font-size: 26px; margin: 0; letter-spacing: .04em; }
.u-profile-info .u-sub { margin: 4px 0 0; }
.u-av-lg { width: 64px; height: 64px; border-radius: 22px; border: 1px solid var(--u-line-hi); overflow: hidden; display: flex; align-items: center; justify-content: center; font-size: 24px; background: #191919; }
.u-av-lg img { width: 100%; height: 100%; object-fit: cover; }
.u-dm { display: flex; align-items: center; justify-content: space-between; gap: 14px; border: 1px solid var(--u-line); border-radius: 12px; padding: 12px 16px; margin: 0 0 10px; background: #101010; }
.u-dm-main { min-width: 0; }
.u-dm-text { font-size: 14.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.u-dm-meta { display: flex; gap: 10px; align-items: center; margin-top: 4px; }
.u-dm-ops { display: flex; gap: 8px; flex-shrink: 0; }
.u-dm-thumb { display: block; width: 40px; height: 40px; object-fit: cover; border-radius: 8px; border: 1px solid var(--u-line); float: left; margin: 0 10px 2px 0; }
.u-file { padding: 8px 0 !important; font-size: 12.5px; color: var(--u-dim); }
.u-file::file-selector-button { margin-right: 10px; padding: 6px 12px; border: 1px solid var(--u-line-hi); border-radius: 8px; background: #191919; color: var(--u-fg); font: inherit; font-size: 12.5px; cursor: pointer; transition: border-color .2s; }
.u-file::file-selector-button:hover { border-color: var(--u-fg); }
.u-edit-img { margin: 6px 0 4px; }
.u-edit-img img { display: block; max-width: 160px; max-height: 120px; border-radius: 10px; border: 1px solid var(--u-line); margin-bottom: 8px; }
.u-inline { display: inline-flex; }
.u-tag { font-size: 11px; padding: 1px 8px; border-radius: 999px; letter-spacing: .05em; }
.u-tag.ok { color: var(--u-ok); border: 1px solid rgba(126,226,168,.4); }
.u-tag.no { color: var(--u-err); border: 1px solid rgba(255,107,107,.4); }
.u-tag.pend { color: var(--u-pend); border: 1px solid rgba(232,196,106,.4); }
.u-tag.warn { color: var(--u-err); border: 1px solid rgba(255,107,107,.4); }
.u-banned-page .u-form-side { align-items: center; }
.u-banned-card { position: relative; overflow: hidden; }
.u-banned-card::before { content: ''; position: absolute; inset: 0; pointer-events: none; background: repeating-linear-gradient(135deg, transparent 0 18px, rgba(255,107,107,.035) 18px 19px); }
.u-kicker { margin: 0 0 10px; color: var(--u-err); font-size: 11px; letter-spacing: .22em; font-weight: 700; }
.u-banned-signal { display: flex; gap: 7px; margin: 0 auto 22px; justify-content: center; }
.u-banned-signal span { display: block; width: 10px; height: 10px; border-radius: 50%; background: var(--u-err); box-shadow: 0 0 18px rgba(255,107,107,.75); animation: uAlarm 1s ease-in-out infinite; }
.u-banned-signal span:nth-child(2) { animation-delay: .16s; }
.u-banned-signal span:nth-child(3) { animation-delay: .32s; }
.u-banned-actions { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-top: 24px; position: relative; }
@keyframes uAlarm { 0%,100% { opacity: .32; transform: scale(.82); } 50% { opacity: 1; transform: scale(1.12); } }
@media (prefers-reduced-motion: reduce) { .u-banned-signal span { animation: none; opacity: 1; } }
@media (max-width: 880px) { .u-split { grid-template-columns: 1fr; } .u-brand { border-right: 0; border-bottom: 1px solid var(--u-line); padding: 8vh 8vw 6vh; } .u-hero-foot { margin-top: 30px; } .u-form-side { padding: 6vh 6vw 8vh; } .u-card { padding: 26px 22px 22px; } }
@media (prefers-reduced-motion: reduce) { .u-card, .u-dot { animation: none; } }