/* ============================================================
   cloud-auth.css · 云端登录按钮 + 登录浮层
   全部颜色走 main.css 的主题变量，切主题不掉色
   ============================================================ */

/* ============================================================
   一、顶栏按钮
   ============================================================ */

.auth-btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:34px;
  padding:0 14px 0 12px;
  border-radius:999px;
  border:1px solid var(--line-a);
  background:linear-gradient(135deg,
      rgba(255,255,255,.055) 0%,
      rgba(var(--c2-rgb),.06) 100%);
  color:var(--muted);
  font-family:var(--zh);
  font-size:.74rem;
  letter-spacing:.1em;
  line-height:1;
  cursor:pointer;
  overflow:hidden;
  transition:color .4s var(--ease), border-color .4s var(--ease),
             box-shadow .4s var(--ease), transform .4s var(--ease);
}

/* 只在支持的设备上开磨砂，低端机/安卓旧版直接半透明纯色 */
@supports (backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px)){
  .auth-btn{
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
  }
}

/* 斜向流光：hover 时扫一遍 */
.auth-btn::before{
  content:"";
  position:absolute;
  top:-60%; left:-70%;
  width:46%; height:220%;
  background:linear-gradient(90deg,
      transparent,
      rgba(255,255,255,.16),
      transparent);
  transform:rotate(18deg);
  pointer-events:none;
  transition:left .7s var(--ease);
}
.auth-btn:hover::before{ left:130%; }

.auth-btn:hover{
  color:var(--c2-lt);
  border-color:var(--line-a2);
  transform:translateY(-1px);
  box-shadow:0 8px 24px -12px rgba(var(--c2-rgb),.6);
}

.auth-btn:active{ transform:translateY(0) scale(.985); }

/* 状态点 */
.auth-btn .ab-dot{
  width:6px; height:6px;
  border-radius:50%;
  flex:0 0 auto;
  background:var(--muted-2);
  box-shadow:0 0 0 0 rgba(var(--c2-rgb),0);
  transition:background .4s var(--ease), box-shadow .4s var(--ease);
}

/* 已登录：点变亮 + 呼吸 */
.auth-btn.on{
  color:var(--c2-lt);
  border-color:rgba(var(--c2-rgb),.42);
  background:linear-gradient(135deg,
      rgba(var(--c2-rgb),.13) 0%,
      rgba(var(--c1-rgb),.07) 100%);
}
.auth-btn.on .ab-dot{
  background:var(--c2-lt);
  animation:pulseDot 2.6s ease-in-out infinite;
}
@keyframes pulseDot{
  0%,100%{ box-shadow:0 0 0 0 rgba(var(--c2-rgb),.55); }
  50%    { box-shadow:0 0 0 5px rgba(var(--c2-rgb),0);   }
}

/* 兜底：顶栏都没有时悬在右上 */
.auth-btn--float{
  position:fixed;
  top:18px; right:18px;
  z-index:300;
}

/* 3D 顶栏里的按钮略小一号 */
.hud-right .auth-btn{
  height:32px;
  padding:0 12px 0 10px;
  font-size:.7rem;
}

@media (max-width:520px){
  .auth-btn{ height:30px; padding:0 11px 0 9px; font-size:.68rem; gap:6px; }
  .hud-right .auth-btn{ height:28px; padding:0 10px 0 8px; }
}

/* ============================================================
   二、浮层骨架
   ============================================================ */

body.auth-lock{ overflow:hidden; }

.auth-scrim{
  position:fixed;
  inset:0;
  z-index:9500;
  background:radial-gradient(ellipse at 50% 40%,
      rgba(0,0,0,.55) 0%,
      rgba(0,0,0,.82) 70%);
  opacity:0;
  visibility:hidden;
  transition:opacity .42s var(--ease), visibility .42s var(--ease);
}
@supports (backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px)){
  .auth-scrim{
    backdrop-filter:blur(6px);
    -webkit-backdrop-filter:blur(6px);
  }
}
.auth-scrim.on{ opacity:1; visibility:visible; }

.auth-card{
  position:fixed;
  left:50%; top:50%;
  z-index:9501;
  width:min(392px, calc(100vw - 36px));
  max-height:calc(100vh - 56px);
  overflow-y:auto;
  overscroll-behavior:contain;
  padding:34px 30px 26px;
  border-radius:26px;
  border:1px solid var(--line-a);
  background:linear-gradient(160deg,
      rgba(var(--c2-rgb),.055) 0%,
      rgba(255,255,255,.022) 42%,
      rgba(0,0,0,.02) 100%),
    var(--panel-bg);
  box-shadow:
    0 60px 120px -40px rgba(0,0,0,.9),
    0 0 0 1px rgba(255,255,255,.045) inset,
    0 1px 0 rgba(255,255,255,.09) inset;
  opacity:0;
  visibility:hidden;
  transform:translate(-50%, -46%) scale(.96);
  transition:opacity .44s var(--ease), transform .44s var(--ease),
             visibility .44s var(--ease);
  scrollbar-width:thin;
  scrollbar-color:var(--line-a) transparent;
}
@supports (backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px)){
  .auth-card{
    backdrop-filter:blur(24px) saturate(150%);
    -webkit-backdrop-filter:blur(24px) saturate(150%);
  }
}
.auth-card::-webkit-scrollbar{ width:4px; }
.auth-card::-webkit-scrollbar-thumb{
  background:var(--line-a); border-radius:4px;
}

.auth-card.on{
  opacity:1;
  visibility:visible;
  transform:translate(-50%, -50%) scale(1);
}

/* 四角描金细线 */
.auth-card::before,
.auth-card::after{
  content:"";
  position:absolute;
  width:34px; height:34px;
  border:1px solid rgba(var(--c2-rgb),.32);
  pointer-events:none;
  opacity:.85;
}
.auth-card::before{
  top:10px; left:10px;
  border-right:0; border-bottom:0;
  border-radius:12px 0 0 0;
}
.auth-card::after{
  bottom:10px; right:10px;
  border-left:0; border-top:0;
  border-radius:0 0 12px 0;
}

/* 出错抖动 */
@keyframes authShake{
  0%,100%{ transform:translate(-50%,-50%) scale(1); }
  18%    { transform:translate(calc(-50% - 7px),-50%) scale(1); }
  38%    { transform:translate(calc(-50% + 6px),-50%) scale(1); }
  58%    { transform:translate(calc(-50% - 4px),-50%) scale(1); }
  78%    { transform:translate(calc(-50% + 3px),-50%) scale(1); }
}
.auth-card.shake{ animation:authShake .44s ease; }

/* 关闭 */
.auth-x{
  position:absolute;
  top:14px; right:14px;
  width:26px; height:26px;
  border-radius:50%;
  border:1px solid transparent;
  background:transparent;
  color:var(--muted-2);
  font-size:.62rem;
  line-height:1;
  cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  transition:.3s var(--ease);
  z-index:2;
}
.auth-x:hover{
  color:var(--c2-lt);
  border-color:var(--line-a);
  background:var(--surf);
  transform:rotate(90deg);
}

/* ============================================================
   三、标题区
   ============================================================ */

.auth-head{
  position:relative;
  text-align:center;
  padding-bottom:20px;
  margin-bottom:20px;
}

.auth-eyebrow{
  font-family:var(--serif);
  font-size:.6rem;
  letter-spacing:.42em;
  text-transform:uppercase;
  color:rgba(var(--c2-rgb),.72);
  margin-bottom:10px;
}

.auth-title{
  font-family:var(--zh);
  font-size:1.16rem;
  font-weight:600;
  letter-spacing:.06em;
  line-height:1.5;
  background:var(--title-grad-s);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  color:transparent;
}

.auth-sub{
  font-size:.66rem;
  letter-spacing:.05em;
  color:var(--muted-2);
  margin-top:8px;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  word-break:break-all;
}

/* 底部弧线：中段亮、两端隐 */
.auth-arc{
  position:absolute;
  left:50%; bottom:0;
  width:74%;
  height:1px;
  transform:translateX(-50%);
  background:linear-gradient(90deg,
      transparent,
      rgba(var(--c2-rgb),.5) 30%,
      rgba(var(--c1-rgb),.5) 70%,
      transparent);
}

/* ============================================================
   四、通用文字 / 基础控件
   ============================================================ */

.auth-note{
  font-size:.72rem;
  line-height:1.85;
  color:var(--muted);
  margin-bottom:18px;
}

.auth-cap{
  display:block;
  font-size:.6rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted-2);
  margin:14px 0 7px;
}

.auth-in{
  width:100%;
  padding:11px 13px;
  font-family:inherit;
  font-size:.78rem;
  color:var(--text);
  background:var(--surf);
  border:1px solid var(--line);
  border-radius:12px;
  outline:none;
  transition:border-color .3s var(--ease), background .3s var(--ease),
             box-shadow .3s var(--ease);
}
.auth-in:focus{
  border-color:rgba(var(--c2-rgb),.5);
  background:var(--surf-2);
  box-shadow:0 0 0 3px rgba(var(--c2-rgb),.10);
}
.auth-in::placeholder{ color:var(--muted-2); }

.auth-ta{
  min-height:78px;
  resize:vertical;
  line-height:1.6;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:.68rem;
  word-break:break-all;
}

/* 主按钮 */
.auth-submit{
  position:relative;
  display:block;
  width:100%;
  margin-top:20px;
  padding:13px 18px;
  border:0;
  border-radius:13px;
  font-family:var(--zh);
  font-size:.8rem;
  font-weight:600;
  letter-spacing:.2em;
  cursor:pointer;
  color:var(--btn-ink);
  background:var(--btn-grad);
  overflow:hidden;
  box-shadow:0 10px 30px -12px var(--btn-glow);
  transition:transform .3s var(--ease), box-shadow .3s var(--ease),
             opacity .3s var(--ease);
}
.auth-submit span{
  position:relative;
  z-index:1;
}
.auth-submit::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,
      transparent 30%,
      rgba(255,255,255,.5) 50%,
      transparent 70%);
  transform:translateX(-120%);
  transition:transform .8s var(--ease);
}
.auth-submit:hover:not(:disabled)::after{ transform:translateX(120%); }
.auth-submit:hover:not(:disabled){
  transform:translateY(-1px);
  box-shadow:0 16px 38px -14px var(--btn-glow);
}
.auth-submit:active:not(:disabled){ transform:translateY(0) scale(.99); }

.auth-submit:disabled{ cursor:default; opacity:.72; }

/* 加载态：扫光循环 */
.auth-submit.busy{ pointer-events:none; }
.auth-submit.busy::after{
  transform:translateX(-120%);
  animation:authSweep 1.15s linear infinite;
  background:linear-gradient(120deg,
      transparent 30%,
      rgba(255,255,255,.55) 50%,
      transparent 70%);
}
@keyframes authSweep{
  to{ transform:translateX(120%); }
}

/* 成功态 */
.auth-submit.ok{
  background:linear-gradient(135deg,
      rgba(var(--c2-rgb),.9),
      rgba(var(--c1-rgb),.85));
  color:#fff;
}

/* 次级按钮 */
.auth-submit.ghost{
  color:var(--muted);
  background:transparent;
  border:1px solid var(--line-a);
  box-shadow:none;
  margin-top:11px;
  padding:11px 16px;
  font-weight:500;
  letter-spacing:.12em;
}
.auth-submit.ghost::after{ display:none; }
.auth-submit.ghost:hover:not(:disabled){
  color:var(--c2-lt);
  border-color:var(--line-a2);
  background:var(--surf);
  transform:none;
  box-shadow:none;
}

/* 文字链 */
.auth-link{
  display:block;
  width:100%;
  margin-top:14px;
  padding:6px 0;
  background:none;
  border:0;
  color:var(--muted-2);
  font-family:inherit;
  font-size:.66rem;
  letter-spacing:.1em;
  cursor:pointer;
  transition:color .3s var(--ease);
}
.auth-link:hover{ color:var(--c2); }

/* ============================================================
   五、浮动标签输入框（登录用）
   ============================================================ */

.auth-field{
  position:relative;
  display:block;
  margin-top:20px;
}

.auth-field input{
  width:100%;
  padding:19px 14px 8px;
  font-family:inherit;
  font-size:.82rem;
  color:var(--text);
  background:var(--surf);
  border:1px solid var(--line);
  border-radius:13px;
  outline:none;
  transition:border-color .3s var(--ease), background .3s var(--ease),
             box-shadow .3s var(--ease);
}

.auth-field input:focus{
  border-color:rgba(var(--c2-rgb),.55);
  background:var(--surf-2);
  box-shadow:0 0 0 3px rgba(var(--c2-rgb),.09);
}

/* 标签：默认当占位符压低，聚焦或有值时上浮 */
.auth-field > span{
  position:absolute;
  left:14px;
  top:50%;
  transform:translateY(-50%);
  font-size:.78rem;
  letter-spacing:.06em;
  color:var(--muted-2);
  pointer-events:none;
  transition:top .26s var(--ease), font-size .26s var(--ease),
             color .26s var(--ease), letter-spacing .26s var(--ease);
}

.auth-field input:focus + span,
.auth-field input:not(:placeholder-shown) + span{
  top:10px;
  font-size:.56rem;
  letter-spacing:.18em;
  color:rgba(var(--c2-rgb),.82);
}

/* 密码显隐 */
.auth-eye{
  position:absolute;
  right:10px;
  top:50%;
  transform:translateY(-50%);
  width:26px; height:26px;
  border-radius:50%;
  border:0;
  background:transparent;
  color:var(--muted-2);
  font-size:.72rem;
  line-height:1;
  cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  transition:.28s var(--ease);
}
.auth-eye:hover{ color:var(--c2); background:var(--surf); }
.auth-eye.on{ color:var(--c2); }

.auth-field.pw input{ padding-right:46px; }

/* ============================================================
   六、记住邮箱
   ============================================================ */

.auth-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:14px;
}

.auth-keep{
  display:inline-flex;
  align-items:center;
  gap:8px;
  cursor:pointer;
  user-select:none;
}

.auth-keep input{
  position:absolute;
  opacity:0;
  width:0; height:0;
}

.auth-keep i{
  width:15px; height:15px;
  border-radius:5px;
  border:1px solid var(--line-a);
  background:var(--surf);
  position:relative;
  flex:0 0 auto;
  transition:.28s var(--ease);
}

.auth-keep i::after{
  content:"";
  position:absolute;
  left:4.5px; top:1.5px;
  width:4px; height:8px;
  border:solid var(--btn-ink);
  border-width:0 1.6px 1.6px 0;
  transform:rotate(45deg) scale(0);
  transform-origin:center;
  transition:transform .24s var(--ease);
}

.auth-keep input:checked + i{
  background:var(--btn-grad);
  border-color:transparent;
}
.auth-keep input:checked + i::after{
  transform:rotate(45deg) scale(1);
}
.auth-keep input:focus-visible + i{
  box-shadow:0 0 0 3px rgba(var(--c2-rgb),.18);
}

.auth-keep span{
  font-size:.68rem;
  letter-spacing:.06em;
  color:var(--muted-2);
}

/* ============================================================
   七、提示语
   ============================================================ */

.auth-msg{
  margin-top:14px;
  min-height:1.2em;
  font-size:.68rem;
  line-height:1.6;
  letter-spacing:.03em;
  text-align:center;
  color:var(--muted-2);
  white-space:pre-wrap;
  transition:color .3s var(--ease);
}
.auth-msg.err{ color:#e8756f; }
.auth-msg.ok{ color:rgba(var(--c2-rgb),.95); }

/* ============================================================
   七点五、连不上云端的提示条
   ============================================================ */

.auth-warn{
  margin-bottom:16px;
  padding:11px 13px;
  border-radius:12px;
  border:1px solid rgba(232,117,111,.34);
  background:rgba(232,117,111,.09);
  color:#e8756f;
  font-size:.66rem;
  line-height:1.8;
  letter-spacing:.02em;
}

/* ============================================================
   八、已登录：账号面板
   ============================================================ */

.auth-me{
  display:flex;
  align-items:center;
  gap:14px;
  padding:4px 0 18px;
}

.auth-avatar{
  width:46px; height:46px;
  flex:0 0 auto;
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-family:var(--serif);
  font-size:1.16rem;
  font-weight:600;
  color:var(--btn-ink);
  background:var(--btn-grad);
  box-shadow:0 8px 22px -10px var(--btn-glow),
             inset 0 1px 0 rgba(255,255,255,.4);
}

.auth-me-txt{ min-width:0; }

.auth-me-email{
  font-size:.78rem;
  color:var(--text);
  letter-spacing:.02em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.auth-me-state{
  display:flex;
  align-items:center;
  gap:6px;
  margin-top:6px;
  font-size:.64rem;
  letter-spacing:.06em;
  color:var(--muted-2);
}
.auth-me-state i{
  width:5px; height:5px;
  border-radius:50%;
  background:var(--c2-lt);
  animation:pulseDot 2.6s ease-in-out infinite;
}

.auth-stat{
  padding:12px 14px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--surf);
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:.66rem;
  line-height:1.75;
  color:rgba(var(--c2-rgb),.9);
  white-space:pre-wrap;
  word-break:break-all;
}
.auth-stat.bad{ color:#e8756f; }

/* ============================================================
   九、小屏
   ============================================================ */

@media (max-width:520px){
  .auth-card{
    padding:30px 22px 22px;
    border-radius:22px;
    max-height:calc(100vh - 40px);
  }
  .auth-title{ font-size:1.06rem; }
  .auth-card::before,
  .auth-card::after{ width:26px; height:26px; }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion:reduce){
  .auth-btn::before,
  .auth-submit::after,
  .auth-card.shake{ animation:none; transition:none; }
  .auth-btn.on .ab-dot,
  .auth-me-state i{ animation:none; }
}