/* ===========================================================================
   purple_theme · 登录弹窗 (Neon Purple Wave · 紫霓虹电波三色版)
   设计 token (与 purple_theme 现有 #7200FF 主紫呼应):
     - 主渐变: linear-gradient(135deg, #7200FF 0%, #1beade 50%, #FF00C8 100%)
              主紫 → 霓青 → 紫粉 (从 purple_theme 原版 scrollbar #7200FF 出发)
     - 强调单色: #7200FF (主紫, 渐变起点) / #FF00C8 (紫粉) / #1beade (霓青中段)
     - 副紫调: #9b40ff (浅紫, 复用原版 scrollbar:hover 同款)
     - 纯黑基底: #000000 / #0A0212 (深紫黑) / #0d0418 (深紫黑输入)
     - 字体: Open Sans (主, 保留 purple_theme 原版) + Lato + Oswald (强调)
     - 圆角: 8-12px
=========================================================================== */
.auth-modal{position:fixed;inset:0;z-index:99999;display:flex;align-items:center;justify-content:center;font-family:'Open Sans','Lato','Helvetica Neue',Arial,sans-serif;}
.auth-modal[hidden]{display:none !important;}
.auth-modal *{box-sizing:border-box;}

/* ===== 主题霓虹蒙版 (站内所有弹窗共享) ===== */
.auth-backdrop{
	position:absolute;inset:0;
	background:
		radial-gradient(ellipse at 25% 15%, rgba(114,0,255,0.22), transparent 55%),
		radial-gradient(ellipse at 75% 85%, rgba(27,234,222,0.30), transparent 60%),
		radial-gradient(ellipse at 50% 50%, rgba(255,0,200,0.22), transparent 65%),
		rgba(0,0,0,0.92);
	backdrop-filter:blur(22px) saturate(170%);
	-webkit-backdrop-filter:blur(22px) saturate(170%);
	animation:auth-fade .3s ease;
}
@keyframes auth-fade{from{opacity:0}to{opacity:1}}

.auth-card{
	position:relative;width:100%;max-width:440px;margin:0 16px;padding:34px 34px 28px;
	background:linear-gradient(180deg,#0A0212 0%,#000000 100%);
	border-radius:14px;
	box-shadow:
		0 30px 80px rgba(0,0,0,.85),
		0 0 0 1px rgba(255,255,255,.04) inset;
	color:#F5F5F6;
	animation:auth-pop .32s cubic-bezier(.2,.9,.25,1.1);
	max-height:none;
	overflow:visible;
}
/* 卡片外圈渐变描边 (主紫→霓青→紫粉)
   inset:0 不撑大 card; 用 mask 做出"只显示边框"的渐变效果 */
.auth-card::before{
	content:"";
	position:absolute;inset:0;
	border-radius:14px;
	padding:2px;
	background:linear-gradient(135deg, #7200FF 0%, #1beade 50%, #FF00C8 100%);
	-webkit-mask:linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
	-webkit-mask-composite:xor;
	        mask-composite:exclude;
	pointer-events:none;
	opacity:.85;
}
@keyframes auth-pop{from{opacity:0;transform:translateY(14px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}

.auth-x{position:absolute;top:14px;right:16px;width:34px;height:34px;border:none;background:rgba(255,255,255,.06);color:#A0AEC8;border-radius:50%;font-size:22px;cursor:pointer;line-height:1;transition:all .18s;display:flex;align-items:center;justify-content:center;z-index:2;}
.auth-x:hover{background:linear-gradient(135deg,rgba(114,0,255,.42),rgba(255,0,200,.32));color:#fff;transform:rotate(90deg);}

.auth-brand{text-align:center;margin-bottom:20px;position:relative;z-index:1;}
.auth-logo{max-height:44px;max-width:160px;margin:0 auto 10px;display:block;filter:drop-shadow(0 2px 6px rgba(0,0,0,.7));}
.auth-logo-text{
	display:inline-block;font-size:24px;font-weight:800;
	background:linear-gradient(135deg, #7200FF 0%, #1beade 50%, #FF00C8 100%);
	-webkit-background-clip:text;background-clip:text;
	-webkit-text-fill-color:transparent;color:transparent;
	margin-bottom:6px;letter-spacing:.6px;
	font-family:'Oswald','Lato',sans-serif;text-transform:uppercase;
}
.auth-title{margin:6px 0 4px;font-size:22px;font-weight:700;color:#fff;letter-spacing:.2px;}
.auth-sub{margin:0;font-size:13px;color:#A0AEC8;line-height:1.55;}

.auth-tabs{display:flex;gap:0;margin:22px 0 18px;padding:4px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:10px;}
.auth-tab{flex:1;padding:10px 0;background:transparent;border:none;color:#A0AEC8;font-size:13px;font-weight:600;cursor:pointer;border-radius:8px;transition:all .2s;font-family:inherit;}
.auth-tab:hover{color:#F5F5F6;}
.auth-tab.is-active{
	background:linear-gradient(135deg, #7200FF 0%, #1beade 50%, #FF00C8 100%);
	color:#fff;
	box-shadow:0 2px 12px rgba(114,0,255,.55);
}

.auth-google{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:12px 14px;background:#fff;color:#1f2937;border:none;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;transition:all .18s;box-shadow:0 1px 0 rgba(255,255,255,.15) inset,0 6px 18px rgba(0,0,0,.45);font-family:inherit;}
.auth-google:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.6);}
.auth-google:active{transform:translateY(0);}

.auth-divider{display:flex;align-items:center;gap:12px;margin:18px 0 16px;color:#6b7a90;font-size:11px;letter-spacing:1.4px;text-transform:uppercase;font-weight:600;}
.auth-divider::before,.auth-divider::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);}

.auth-form{display:none;flex-direction:column;gap:14px;}
.auth-form.is-active{display:flex;animation:auth-slide .3s ease;}
@keyframes auth-slide{from{opacity:0;transform:translateX(6px)}to{opacity:1;transform:translateX(0)}}

.auth-field{position:relative;}
.auth-field input{
	width:100%;padding:18px 14px 8px;
	font-size:16px; /* iOS 防缩放: 必须 >= 16px */
	background:#0d0418;
	border:1px solid rgba(255,255,255,.12);
	border-radius:10px;color:#fff;outline:none;
	transition:all .2s;font-family:inherit;
}
.auth-field input:focus{
	border-color:#7200FF;
	background:rgba(114,0,255,.10);
	box-shadow:0 0 0 3px rgba(114,0,255,.20);
}
.auth-field input::placeholder{color:transparent;}
/* label 默认在 input 内, 浮起后位于 input 顶部边框上, 用 ::before 做底色避免横穿边线 */
.auth-field label{
	position:absolute;left:14px;top:50%;transform:translateY(-50%);
	color:#7a8a9e;font-size:14px;pointer-events:none;
	transition:all .18s ease;
	padding:0 6px;
	z-index:1;
}
.auth-field label::before{
	content:"";position:absolute;inset:0;
	background:#0d0418;
	border-radius:2px;
	z-index:-1;
	opacity:0;
	transition:opacity .18s ease;
}
.auth-field input:focus+label,
.auth-field input:not(:placeholder-shown)+label{
	top:0;transform:translateY(-50%);
	left:10px;font-size:11px;font-weight:700;
	color:#7200FF;
}
.auth-field input:focus+label::before,
.auth-field input:not(:placeholder-shown)+label::before{
	opacity:1;
	background:#000000;
}
.auth-field input:-webkit-autofill,
.auth-field input:-webkit-autofill:focus{-webkit-text-fill-color:#fff !important;-webkit-box-shadow:0 0 0 1000px #0d0418 inset !important;caret-color:#fff;}

.auth-eye{position:absolute;right:10px;top:50%;transform:translateY(-50%);width:30px;height:30px;border:none;background:transparent;color:#7a8a9e;cursor:pointer;opacity:.7;font-size:16px;}
.auth-eye:hover{opacity:1;color:#7200FF;}

.auth-field-otp input{padding-right:110px;}
.auth-otp-btn{
	position:absolute;right:6px;top:50%;transform:translateY(-50%);
	padding:8px 14px;
	background:rgba(114,0,255,.16);color:#7200FF;
	border:1px solid rgba(114,0,255,.45);
	border-radius:6px;font-size:12px;font-weight:600;cursor:pointer;
	transition:all .18s;font-family:inherit;
}
.auth-otp-btn:hover:not(:disabled){
	background:linear-gradient(135deg,rgba(114,0,255,.28),rgba(255,0,200,.28));
	color:#fff;border-color:#FF00C8;
}
.auth-otp-btn:disabled{opacity:.5;cursor:not-allowed;}

.auth-row{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;margin-top:-4px;}
.auth-check{display:inline-flex;align-items:center;gap:7px;color:#A0AEC8;cursor:pointer;user-select:none;}
.auth-check input{width:15px;height:15px;accent-color:#7200FF;cursor:pointer;}
.auth-check-wide{margin-top:-2px;line-height:1.5;}
.auth-check-wide a{color:#1beade;text-decoration:none;font-weight:600;}
.auth-check-wide a:hover{text-decoration:underline;color:#FF00C8;}
.auth-link{color:#1beade;text-decoration:none;font-weight:600;}
.auth-link:hover{text-decoration:underline;color:#FF00C8;}

/* 主提交按钮: 紫霓虹冷渐变填充 + 内描边光晕 */
.auth-submit{
	width:100%;padding:14px 18px;
	background:linear-gradient(135deg, #7200FF 0%, #1beade 50%, #FF00C8 100%);
	background-size:200% 100%;background-position:0% 50%;
	color:#fff;border:none;border-radius:10px;
	font-size:14.5px;font-weight:800;cursor:pointer;
	margin-top:4px;letter-spacing:.7px;text-transform:uppercase;
	transition:all .35s ease;
	box-shadow:
		0 10px 24px -6px rgba(114,0,255,.55),
		0 0 0 1px rgba(255,255,255,.1) inset,
		0 0 18px rgba(27,234,222,.45);
	font-family:'Oswald','Lato',sans-serif;
}
.auth-submit:hover:not(:disabled){
	background-position:100% 50%;
	transform:translateY(-1px);
	box-shadow:
		0 14px 30px -6px rgba(255,0,200,.65),
		0 0 24px rgba(27,234,222,.35);
}
.auth-submit:active{transform:translateY(0);}
.auth-submit:disabled{opacity:.6;cursor:wait;}
.auth-submit.is-loading{color:transparent;position:relative;}
.auth-submit.is-loading::after{content:"";position:absolute;top:50%;left:50%;width:18px;height:18px;margin:-9px 0 0 -9px;border:2.5px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:auth-spin .7s linear infinite;}
@keyframes auth-spin{to{transform:rotate(360deg)}}

.auth-alt{margin:12px 0 0;text-align:center;font-size:13px;color:#A0AEC8;}
.auth-alt a{color:#1beade;text-decoration:none;font-weight:600;}
.auth-alt a:hover{text-decoration:underline;color:#FF00C8;}

.auth-toast{position:absolute;left:34px;right:34px;bottom:22px;padding:12px 16px;background:rgba(0,0,0,.97);border:1px solid rgba(114,0,255,.55);border-radius:8px;color:#fff;font-size:13px;text-align:center;box-shadow:0 10px 28px rgba(0,0,0,.7);animation:auth-toast-in .3s ease;}
.auth-toast.is-error{border-color:rgba(248,113,113,.55);background:rgba(40,14,14,.97);}
.auth-toast.is-success{border-color:rgba(74,222,128,.55);background:rgba(12,36,22,.97);}
@keyframes auth-toast-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* ===== 移动端适配 ===== */
@media (max-width: 480px){
  .auth-card{padding:26px 22px 22px;border-radius:12px;max-height:94vh;margin:0 12px;}
  .auth-card::before{border-radius:14px;}
  .auth-title{font-size:19px;}
  .auth-sub{font-size:12px;}
  .auth-toast{left:18px;right:18px;bottom:14px;}
  .auth-tab{padding:12px 0;}
  .auth-google,.auth-submit{padding:14px;}
  .auth-otp-btn{padding:10px 12px;}
  .auth-x{width:38px;height:38px;}
  .auth-form{gap:12px;}
}

@media (max-height: 600px){
  .auth-card{max-height:96vh;padding-top:20px;padding-bottom:20px;}
  .auth-brand{margin-bottom:14px;}
}