/* ============================================
   思弈云 - 统一认证页样式 auth.css
   适用于：登录（idc/dl.html）、重置密码（zhmm.html）
   依赖：main.css（提供色彩变量与基础排版）
   设计语言：直角 · 橙色主调 · 错峰进场 · 扫光按钮
   ============================================ */

.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:44px 20px 88px;position:relative;overflow:hidden}

/* ---------- 背景光斑 ---------- */
.auth-orb{position:absolute;border-radius:50%;filter:blur(110px);z-index:0;pointer-events:none}
.auth-orb--1{width:520px;height:520px;background:rgba(255,105,0,.08);top:-160px;right:-120px;animation:authFloat 16s ease-in-out infinite}
.auth-orb--2{width:380px;height:380px;background:rgba(255,105,0,.05);bottom:-120px;left:-140px;animation:authFloat 19s ease-in-out infinite;animation-delay:5s}
.auth-orb--3{width:220px;height:220px;background:rgba(15,23,42,.05);top:45%;left:38%;animation:authFloat 13s ease-in-out infinite;animation-delay:8s}
@keyframes authFloat{0%,100%{transform:translateY(0) rotate(0)}33%{transform:translateY(-26px) rotate(1deg)}66%{transform:translateY(-10px) rotate(-1deg)}}

/* ---------- 主卡片 ---------- */
.auth-card{position:relative;z-index:2;width:100%;max-width:940px;display:grid;grid-template-columns:1.05fr 1fr;background:var(--w);border:1px solid var(--c);box-shadow:0 30px 70px rgba(15,23,42,.14);animation:authUp .8s cubic-bezier(.22,.9,.32,1) both}
@keyframes authUp{from{opacity:0;transform:translateY(36px) scale(.985)}to{opacity:1;transform:translateY(0) scale(1)}}

/* ---------- 左侧品牌区 ---------- */
.auth-brand{position:relative;background:var(--k);color:#fff;padding:48px 42px 34px;display:flex;flex-direction:column;overflow:hidden;border-right:1px solid rgba(255,255,255,.06)}
.auth-brand::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--o),#ff9248);z-index:2}
.auth-brand::after{content:'';position:absolute;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(255,105,0,.2),transparent 70%);top:-120px;right:-120px;pointer-events:none}
.auth-brand-top{display:flex;align-items:center;gap:12px}
.auth-brand-top img{width:42px;height:42px;border-radius:4px;border:1px solid rgba(255,255,255,.18)}
.auth-brand-top .name{font-size:1.3rem;font-weight:800;letter-spacing:.02em;line-height:1.1}
.auth-brand-top .sub{font-size:.6rem;color:#64748b;letter-spacing:.3em;text-transform:uppercase;margin-top:4px}
.auth-brand h2{font-size:clamp(1.4rem,2.4vw,1.9rem);font-weight:900;line-height:1.3;letter-spacing:-.5px;margin:34px 0 12px}
.auth-brand h2 em{font-style:normal;color:var(--o)}
.auth-brand .lead{font-size:.85rem;color:#94a3b8;line-height:1.75;max-width:340px}
.auth-brand-features{list-style:none;margin-top:auto;padding-top:28px;display:flex;flex-direction:column;gap:9px}
.auth-brand-features li{display:flex;align-items:center;gap:12px;padding:11px 14px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);font-size:.82rem;color:#cbd5e1;transition:transform .3s ease,border-color .3s ease,background .3s ease}
.auth-brand-features li:hover{transform:translateX(6px);border-color:rgba(255,105,0,.55);background:rgba(255,105,0,.08)}
.auth-brand-features li i{color:var(--o);width:18px;text-align:center;font-size:.9rem}
.auth-brand-features li b{font-weight:600;color:#fff}
.auth-brand-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
.auth-brand-stats .num{font-size:1.45rem;font-weight:900;color:#fff;letter-spacing:-.5px}
.auth-brand-stats .num i{font-style:normal;color:var(--o);font-size:.9rem;margin-left:2px}
.auth-brand-stats .lab{font-size:.66rem;color:#64748b;letter-spacing:.08em;margin-top:2px}
.auth-brand-foot{margin-top:22px;padding-top:16px;border-top:1px solid rgba(255,255,255,.08);font-size:.62rem;color:#475569;letter-spacing:.04em}

/* ---------- 右侧表单区 ---------- */
.auth-form-side{padding:46px 42px;display:flex;flex-direction:column;justify-content:center;background:var(--w)}
.auth-back{display:inline-flex;align-items:center;gap:7px;font-size:.76rem;font-weight:600;color:var(--f);text-decoration:none;margin-bottom:20px;transition:color .2s ease,transform .2s ease;width:fit-content}
.auth-back:hover{color:var(--o);transform:translateX(-3px)}
.auth-eyebrow{font-size:.66rem;font-weight:800;letter-spacing:.24em;text-transform:uppercase;color:var(--o);margin-bottom:9px}
.auth-title{font-size:clamp(1.35rem,2.2vw,1.6rem);font-weight:900;color:var(--h);letter-spacing:-.4px;margin-bottom:7px}
.auth-desc{font-size:.82rem;color:var(--f);line-height:1.65;margin-bottom:24px}

/* ---------- 步骤指示器（重置密码） ---------- */
.auth-steps{display:flex;align-items:center;gap:8px;margin-bottom:24px}
.auth-step{display:flex;align-items:center;gap:7px;font-size:.68rem;font-weight:700;color:var(--e);white-space:nowrap}
.auth-step .dot{width:22px;height:22px;display:flex;align-items:center;justify-content:center;background:var(--b);border:1px solid var(--c);font-size:.62rem;transition:all .3s ease}
.auth-step.active{color:var(--o)}
.auth-step.active .dot{background:var(--o);border-color:var(--o);color:#fff}
.auth-step.done{color:var(--g)}
.auth-step.done .dot{background:var(--h);border-color:var(--h);color:#fff}
.auth-step-line{flex:1;height:1px;background:var(--c);min-width:12px;transition:background .3s ease}
.auth-step-line.done{background:var(--o)}

/* ---------- 表单控件 ---------- */
.auth-field{margin-bottom:15px}
.auth-field label{display:block;font-size:.7rem;font-weight:700;color:var(--g);margin-bottom:7px;letter-spacing:.05em}
.auth-field input{width:100%;padding:12px 14px;font-size:.9rem;color:var(--h);background:var(--a);border:1px solid var(--c);outline:none;transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;font-family:inherit}
.auth-field input:focus{border-color:var(--o);background:#fff;box-shadow:0 0 0 3px var(--ot)}
.auth-field input::placeholder{color:var(--e)}
.auth-field input.invalid{border-color:#dc2626;box-shadow:0 0 0 3px rgba(220,38,38,.1)}
.auth-hint{font-size:.66rem;color:var(--e);margin-top:6px;line-height:1.5}
.auth-pass{position:relative}
.auth-pass input{padding-right:44px}
.auth-pass .eye{position:absolute;right:0;top:0;bottom:0;width:42px;border:none;background:none;color:var(--e);cursor:pointer;font-size:.85rem;transition:color .2s ease}
.auth-pass .eye:hover{color:var(--o)}
.auth-mailto{display:flex;align-items:center;gap:8px;padding:10px 12px;margin-bottom:15px;background:var(--a);border:1px solid var(--c);font-size:.78rem;color:var(--g)}
.auth-mailto i{color:var(--o)}
.auth-mailto b{font-weight:700;letter-spacing:.02em}
.auth-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:480px){.auth-row{grid-template-columns:1fr}}

/* ---------- Turnstile ---------- */
.auth-turnstile{margin:2px 0 14px;min-height:65px}

/* ---------- 提交按钮（扫光） ---------- */
.auth-submit{position:relative;overflow:hidden;width:100%;padding:13px 16px;margin-top:4px;background:var(--o);color:#fff;border:1px solid var(--o);font-size:.9rem;font-weight:700;font-family:inherit;cursor:pointer;transition:background .3s ease,transform .25s ease,box-shadow .25s ease}
.auth-submit:hover:not(:disabled){background:#e55d00;border-color:#e55d00;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,105,0,.32)}
.auth-submit:active:not(:disabled){transform:translateY(0);box-shadow:0 4px 12px rgba(255,105,0,.24)}
.auth-submit:disabled{background:var(--d);border-color:var(--d);cursor:not-allowed}
.auth-submit::after{content:'';position:absolute;top:0;left:-70%;width:45%;height:100%;background:linear-gradient(105deg,transparent,rgba(255,255,255,.4),transparent);transform:skewX(-22deg);transition:left .55s ease;pointer-events:none}
.auth-submit:hover:not(:disabled)::after{left:135%}

/* ---------- 次级按钮 ---------- */
.auth-btn-ghost{width:100%;padding:12px 16px;background:transparent;color:var(--g);border:1px solid var(--c);font-size:.85rem;font-weight:600;font-family:inherit;cursor:pointer;transition:all .25s ease}
.auth-btn-ghost:hover{border-color:var(--o);color:var(--o);background:var(--ot)}

/* ---------- 底部链接 ---------- */
.auth-links{display:flex;justify-content:space-between;align-items:center;margin-top:18px;font-size:.78rem}
.auth-links a{color:var(--f);text-decoration:none;font-weight:600;transition:color .2s ease}
.auth-links a:hover{color:var(--o)}
.auth-links .sep{color:var(--c);margin:0 10px}

/* ---------- 成功状态 ---------- */
.auth-success{text-align:center;padding:18px 0 6px}
.auth-success .ok-icon{width:66px;height:66px;margin:0 auto 18px;background:var(--ot);color:var(--o);display:flex;align-items:center;justify-content:center;font-size:1.8rem;animation:authPop .6s cubic-bezier(.34,1.56,.64,1) both}
@keyframes authPop{from{opacity:0;transform:scale(.4)}to{opacity:1;transform:scale(1)}}
.auth-success h3{font-size:1.25rem;font-weight:800;color:var(--h);margin-bottom:8px}
.auth-success p{font-size:.82rem;color:var(--f);line-height:1.7;margin-bottom:22px}

/* ---------- Toast ---------- */
.auth-toast{position:fixed;top:24px;left:50%;transform:translateX(-50%) translateY(-14px);background:var(--k);color:#fff;padding:11px 26px;font-size:.8rem;font-weight:500;z-index:9999;opacity:0;transition:opacity .3s ease,transform .3s ease;pointer-events:none;box-shadow:0 12px 32px rgba(15,23,42,.28);max-width:calc(100vw - 40px);text-align:center}
.auth-toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.auth-toast.error{background:#dc2626}

/* ---------- 错峰进场 ---------- */
.auth-in{animation:authIn .55s ease both}
.d1{animation-delay:.06s}.d2{animation-delay:.13s}.d3{animation-delay:.2s}.d4{animation-delay:.27s}.d5{animation-delay:.34s}.d6{animation-delay:.41s}
@keyframes authIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}

/* ---------- 简洁单卡片模式（登录页） ---------- */
.auth-card--simple{max-width:410px;grid-template-columns:1fr;flex-direction:column;display:flex}
.auth-simple-head{text-align:center;padding:36px 36px 0}
.auth-simple-logo{width:52px;height:52px;margin:0 auto 16px;border-radius:5px;border:1px solid var(--c);box-shadow:0 6px 18px rgba(15,23,42,.08);display:block;animation:authPop .55s cubic-bezier(.34,1.56,.64,1) both}
.auth-simple-head h1{font-size:1.35rem;font-weight:900;color:var(--h);letter-spacing:-.4px;margin-bottom:6px}
.auth-simple-head .sub{font-size:.8rem;color:var(--f);line-height:1.6}
.auth-simple-form{padding:26px 36px 32px}
.auth-simple-form .auth-links{justify-content:center;margin-top:16px}
.auth-simple-back{position:absolute;top:16px;left:16px;display:inline-flex;align-items:center;gap:6px;font-size:.72rem;font-weight:600;color:var(--e);text-decoration:none;transition:color .2s ease,transform .2s ease;z-index:3}
.auth-simple-back:hover{color:var(--o);transform:translateX(-3px)}
.auth-divider{display:flex;align-items:center;gap:12px;margin:4px 0 0;font-size:.64rem;color:var(--e);letter-spacing:.08em}
.auth-divider::before,.auth-divider::after{content:'';flex:1;height:1px;background:var(--c)}

/* ---------- 注册页专用 ---------- */
.auth-field input.error{border-color:#dc2626;box-shadow:0 0 0 3px rgba(220,38,38,.1)}
.auth-guide{background:var(--a);border:1px solid var(--c);border-left:3px solid var(--o);padding:14px 16px;margin-bottom:15px;display:flex;flex-direction:column;gap:8px}
.auth-guide .g-title{font-size:.74rem;font-weight:800;color:var(--h);letter-spacing:.04em;display:flex;align-items:center;gap:7px}
.auth-guide .g-title i{color:var(--o)}
.auth-guide .g-item{display:flex;align-items:center;gap:9px;font-size:.76rem;color:var(--f);line-height:1.5}
.auth-guide .g-num{width:18px;height:18px;flex-shrink:0;background:var(--h);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.62rem;font-weight:700}
.auth-flex{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.auth-flex .auth-btn-ghost{width:100%}
@media(max-width:480px){.auth-flex{grid-template-columns:1fr}}
.auth-timer{font-size:.7rem;color:var(--o);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.06em;margin:8px 0 4px;min-height:1em}
.auth-agree{display:flex;align-items:flex-start;gap:9px;margin:14px 0 4px;cursor:pointer;user-select:none}
.auth-agree input{width:15px;height:15px;margin-top:2px;accent-color:var(--o);cursor:pointer;flex-shrink:0}
.auth-agree span{font-size:.72rem;color:var(--f);line-height:1.6}
.auth-agree a{color:var(--o);font-weight:600}
@media(max-width:480px){
  .auth-simple-head{padding:28px 24px 0}
  .auth-simple-form{padding:22px 24px 28px}
}

/* ---------- 响应式 ---------- */
@media(max-width:880px){
  .auth-wrap{padding:28px 16px 84px;align-items:flex-start}
  .auth-card{grid-template-columns:1fr;max-width:470px;margin:auto}
  .auth-brand{display:none}
  .auth-brand h2{margin:18px 0 8px;font-size:1.3rem}
  .auth-brand .lead{font-size:.78rem;max-width:100%}
  .auth-brand-features,.auth-brand-stats,.auth-brand-foot{display:none}
  .auth-form-side{padding:30px 26px 32px}
  .auth-title{font-size:1.3rem}
}

/* ---------- 减少动效偏好 ---------- */
@media(prefers-reduced-motion:reduce){
  .auth-card,.auth-in,.auth-orb,.auth-success .ok-icon{animation:none!important;transition:none!important}
  .auth-submit,.auth-field input,.auth-brand-features li,.auth-back,.auth-links a{transition:none!important}
  .auth-submit::after{display:none}
}