/* ============ 智汇AI 平台样式 ============ */
:root{
  --bg:#0b0f1a; --bg2:#0e1424; --panel:#121a2e; --panel2:#182238;
  --border:#243050; --border2:#2e3d63;
  --text:#e8ecf6; --muted:#8b93a7; --dim:#5d6577;
  --blue:#3b82f6; --purple:#8b5cf6; --cyan:#06b6d4; --green:#10b981;
  --red:#ef4444; --amber:#f59e0b;
  --grad:linear-gradient(135deg,#3b82f6,#8b5cf6);
  --radius:14px; --radius-sm:9px;
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:14.5px;overflow:hidden}
.hidden{display:none!important}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:#2a3757;border-radius:4px}
::-webkit-scrollbar-track{background:transparent}

/* ---------- 按钮 ---------- */
button{cursor:pointer;border:none;font-family:inherit;transition:.18s}
.btn-primary{background:var(--grad);color:#fff;padding:10px 22px;border-radius:var(--radius-sm);font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:7px;justify-content:center}
.btn-primary:hover{filter:brightness(1.12);transform:translateY(-1px);box-shadow:0 6px 20px rgba(99,102,241,.35)}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--border);padding:7px 14px;border-radius:var(--radius-sm)}
.btn-ghost:hover{color:var(--text);border-color:var(--border2);background:rgba(255,255,255,.04)}
.btn-danger{background:rgba(239,68,68,.12);color:#f87171;border:1px solid rgba(239,68,68,.35);padding:6px 12px;border-radius:8px;font-size:13px}
.btn-danger:hover{background:rgba(239,68,68,.25)}
.btn-sm{padding:6px 13px;font-size:13px;border-radius:8px}
.btn-block{width:100%;padding:12px}

/* ---------- 表单 ---------- */
input,select,textarea{width:100%;background:var(--bg2);border:1px solid var(--border);color:var(--text);border-radius:var(--radius-sm);padding:10px 13px;font-size:14px;font-family:inherit;outline:none;transition:.18s}
input:focus,select:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(59,130,246,.15)}
textarea{resize:vertical;min-height:90px;line-height:1.6}
label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px}
.form-group{margin-bottom:16px}

/* ---------- 登录页 ---------- */
.auth-page{display:flex;height:100vh}
.auth-left{flex:1.2;position:relative;display:flex;align-items:center;justify-content:center;background:radial-gradient(ellipse at 30% 20%,#16204a 0%,#0b0f1a 65%);overflow:hidden}
.auth-right{flex:1;display:flex;align-items:center;justify-content:center;background:var(--bg)}
.auth-brand{position:relative;z-index:2;max-width:480px;padding:40px}
.logo-big{font-size:64px;filter:drop-shadow(0 0 22px rgba(99,102,241,.6))}
.auth-brand h1{font-size:44px;margin:12px 0 8px;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:800;letter-spacing:2px}
.slogan{color:var(--muted);font-size:16px;margin-bottom:34px}
.feature-list{list-style:none}
.feature-list li{padding:11px 0;color:#c3cad9;font-size:15px;display:flex;gap:12px;align-items:center;border-bottom:1px dashed rgba(255,255,255,.06)}
.feature-list li span{font-size:19px}
.glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5}
.glow-1{width:340px;height:340px;background:#3b82f6;top:-80px;left:-60px}
.glow-2{width:280px;height:280px;background:#8b5cf6;bottom:-60px;right:10px}
.auth-card{width:min(400px,88%);background:var(--panel);border:1px solid var(--border);border-radius:20px;padding:36px 34px;box-shadow:0 24px 70px rgba(0,0,0,.45)}
.auth-card h2{font-size:25px;margin-bottom:6px}
.auth-sub{color:var(--muted);font-size:13.5px;margin-bottom:22px}
.tab-switch{display:flex;background:var(--bg2);border-radius:10px;padding:4px;margin-bottom:22px}
.tab-switch button{flex:1;padding:9px;background:transparent;color:var(--muted);border-radius:8px;font-size:14px;font-weight:600}
.tab-switch button.active{background:var(--grad);color:#fff}
.auth-tip{margin-top:16px;font-size:12.5px;color:var(--dim);text-align:center;line-height:1.7}
.captcha-row{display:flex;gap:10px;align-items:center}
.captcha-row input{flex:1;letter-spacing:3px;font-size:15px;text-transform:uppercase}
.captcha-img{height:46px;width:150px;border-radius:9px;cursor:pointer;border:1px solid var(--border);flex-shrink:0;user-select:none}
.captcha-img:hover{border-color:var(--blue)}
.captcha-img.loading{opacity:.4;pointer-events:none}

/* ---------- 主布局 ---------- */
.app{display:flex;height:100vh}
.sidebar{width:225px;background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0}
.side-logo{padding:22px 20px;font-size:21px;font-weight:800;display:flex;align-items:center;gap:10px;letter-spacing:1px}
.side-logo span{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
#nav{flex:1;padding:6px 12px;overflow-y:auto}
#nav a{display:flex;align-items:center;gap:12px;padding:11.5px 14px;color:var(--muted);text-decoration:none;border-radius:10px;margin-bottom:3px;font-size:14.5px;position:relative}
#nav a svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
#nav a:hover{color:var(--text);background:rgba(255,255,255,.045)}
#nav a.active{color:#fff;background:linear-gradient(90deg,rgba(59,130,246,.18),rgba(139,92,246,.12));border:1px solid rgba(99,102,241,.35)}
.side-user{padding:14px;border-top:1px solid var(--border);display:flex;align-items:center;gap:11px}
.avatar{width:38px;height:38px;border-radius:11px;background:var(--grad);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;flex-shrink:0}
.u-info{flex:1;min-width:0}
.u-info b{display:block;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.u-info span{font-size:12px;color:var(--dim)}
#btn-logout{background:transparent;color:var(--dim);font-size:17px;padding:7px 10px;border-radius:8px}
#btn-logout:hover{color:var(--red);background:rgba(239,68,68,.1)}

.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{height:62px;display:flex;align-items:center;justify-content:space-between;padding:0 28px;border-bottom:1px solid var(--border);background:rgba(18,26,46,.6);backdrop-filter:blur(8px);flex-shrink:0}
.topbar h2{font-size:18px;font-weight:700}
.top-credit{background:linear-gradient(135deg,rgba(245,158,11,.15),rgba(245,158,11,.05));border:1px solid rgba(245,158,11,.4);color:#fbbf24;padding:7px 16px;border-radius:20px;font-size:13.5px;font-weight:600}
.top-credit b{font-size:15px}
.page{flex:1;overflow-y:auto;padding:26px 28px}

/* ---------- 通用组件 ---------- */
.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:22px;margin-bottom:18px}
.card h3{font-size:16px;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.stat-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:20px;position:relative;overflow:hidden}
.stat-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad)}
.stat-card .num{font-size:27px;font-weight:800;margin-top:4px}
.stat-card .lbl{color:var(--muted);font-size:13px}
.stat-card .ico{position:absolute;right:16px;top:16px;font-size:22px;opacity:.85}
table.tbl{width:100%;border-collapse:collapse;font-size:13.5px}
.tbl th{text-align:left;color:var(--dim);font-weight:600;padding:10px 12px;border-bottom:1px solid var(--border);font-size:12.5px;white-space:nowrap}
.tbl td{padding:11px 12px;border-bottom:1px solid rgba(36,48,80,.5);color:#c9d0e0;vertical-align:middle}
.tbl tr:hover td{background:rgba(255,255,255,.025)}
.tag{display:inline-block;padding:2.5px 10px;border-radius:12px;font-size:12px;font-weight:600}
.tag-admin{background:rgba(139,92,246,.15);color:#b79bff;border:1px solid rgba(139,92,246,.4)}
.tag-user{background:rgba(59,130,246,.13);color:#7ab0ff;border:1px solid rgba(59,130,246,.35)}
.tag-on{background:rgba(16,185,129,.14);color:#34d399;border:1px solid rgba(16,185,129,.35)}
.tag-off{background:rgba(239,68,68,.13);color:#f87171;border:1px solid rgba(239,68,68,.35)}
.tag-blue{background:rgba(6,182,212,.13);color:#4fd1e5;border:1px solid rgba(6,182,212,.35)}
.tag-amber{background:rgba(245,158,11,.13);color:#fbbf24;border:1px solid rgba(245,158,11,.35)}
.tag-purple{background:rgba(139,92,246,.13);color:#b79bff;border:1px solid rgba(139,92,246,.35)}
.empty{text-align:center;color:var(--dim);padding:44px 0;font-size:13.5px}
.toolbar{display:flex;gap:10px;align-items:center;margin-bottom:16px;flex-wrap:wrap}
.toolbar input,.toolbar select{width:auto}
.pager{display:flex;gap:8px;justify-content:center;margin-top:16px;align-items:center;color:var(--muted);font-size:13px}

/* ---------- 工作台 ---------- */
.hero{background:linear-gradient(120deg,rgba(59,130,246,.16),rgba(139,92,246,.12));border:1px solid rgba(99,102,241,.35);border-radius:18px;padding:30px 32px;margin-bottom:20px;position:relative;overflow:hidden}
.hero::after{content:"⚡";position:absolute;right:36px;top:50%;transform:translateY(-50%);font-size:80px;opacity:.12}
.hero h2{font-size:24px;margin-bottom:8px}
.hero p{color:var(--muted)}
.feat-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:22px;cursor:pointer;transition:.2s}
.feat-card:hover{transform:translateY(-4px);border-color:rgba(99,102,241,.5);box-shadow:0 14px 34px rgba(0,0,0,.35)}
.feat-card .fico{width:46px;height:46px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-size:23px;margin-bottom:14px}
.feat-card h4{font-size:15.5px;margin-bottom:6px}
.feat-card p{color:var(--muted);font-size:12.8px;line-height:1.6}

/* ---------- 对话 ---------- */
.chat-wrap{display:flex;gap:16px;height:calc(100vh - 62px - 52px);margin:-26px -28px}
.chat-sessions{width:225px;border-right:1px solid var(--border);background:var(--bg2);padding:14px 10px;overflow-y:auto;flex-shrink:0}
.sess-item{padding:10px 13px;border-radius:9px;cursor:pointer;color:var(--muted);font-size:13px;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;position:relative}
.sess-item:hover{background:rgba(255,255,255,.04);color:var(--text)}
.sess-item.active{background:rgba(59,130,246,.14);color:#9ec2ff;border:1px solid rgba(59,130,246,.3)}
.chat-main{flex:1;display:flex;flex-direction:column;min-width:0}
.chat-scroll{flex:1;overflow-y:auto;padding:24px 30px}
.msg{display:flex;gap:12px;margin-bottom:20px;max-width:860px}
.msg .m-avatar{width:35px;height:35px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}
.msg.user .m-avatar{background:linear-gradient(135deg,#2563eb,#4f46e5)}
.msg.ai .m-avatar{background:var(--grad)}
.bubble{background:var(--panel);border:1px solid var(--border);border-radius:4px 14px 14px 14px;padding:12px 16px;line-height:1.75;font-size:14.5px;overflow-wrap:break-word;min-width:0}
.msg.user .bubble{background:linear-gradient(135deg,#2563eb,#4f46e5);border:none;border-radius:14px 4px 14px 14px;color:#fff}
.bubble pre{background:#0a0e19;border:1px solid var(--border);border-radius:8px;padding:13px;overflow-x:auto;margin:9px 0;font-size:13px}
.bubble code{background:rgba(255,255,255,.08);padding:2px 6px;border-radius:5px;font-size:13px}
.bubble pre code{background:none;padding:0}
.bubble h1,.bubble h2,.bubble h3{margin:10px 0 6px;font-size:15.5px}
.bubble ul{padding-left:20px;margin:7px 0}
.bubble p{margin:5px 0}
.typing-cursor::after{content:"▍";color:var(--blue);animation:blink .8s infinite}
@keyframes blink{50%{opacity:0}}
.chat-input-bar{padding:14px 26px 18px;border-top:1px solid var(--border);background:var(--bg2)}
.chat-input-row{display:flex;gap:12px;align-items:flex-end}
.chat-input-row textarea{flex:1;min-height:52px;max-height:150px}
.chat-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.chat-meta select{width:auto;padding:6px 10px;font-size:13px}

/* ---------- 生图 ---------- */
.img-result{min-height:280px;display:flex;align-items:center;justify-content:center;background:radial-gradient(ellipse at center,rgba(99,102,241,.06),transparent);border-radius:var(--radius);border:1px dashed var(--border2)}
.img-result img{max-width:100%;max-height:560px;border-radius:12px;box-shadow:0 16px 46px rgba(0,0,0,.5)}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.gallery .g-item{position:relative;border-radius:10px;overflow:hidden;cursor:pointer;aspect-ratio:1;border:1px solid var(--border)}
.gallery .g-item img{width:100%;height:100%;object-fit:cover;transition:.25s}
.gallery .g-item:hover img{transform:scale(1.07)}
.spin{width:36px;height:36px;border:3px solid var(--border2);border-top-color:var(--blue);border-radius:50%;animation:rot .8s linear infinite;margin:0 auto 14px}
@keyframes rot{to{transform:rotate(360deg)}}
.loading-box{text-align:center;color:var(--muted);padding:60px 0}
.loading-box .slogan-line{font-size:13.5px}

/* ---------- PPT ---------- */
.slide-preview{background:#fff;border-radius:10px;aspect-ratio:16/9;padding:8% 7%;color:#22283a;box-shadow:0 12px 40px rgba(0,0,0,.4);position:relative;overflow:hidden}
.slide-preview .sp-bar{position:absolute;top:0;left:0;right:0;height:16%;display:flex;align-items:center;padding:0 5%;background:var(--sp-primary,#1f4e9d);color:#fff;font-weight:800;font-size:clamp(10px,2.2vw,15px)}
.slide-preview .sp-num{position:absolute;right:5%;top:3.2%;font-size:9px;opacity:.8;color:#fff}
.slide-preview ul{margin-top:17%;list-style:none}
.slide-preview li{background:var(--sp-light,#e8f1fa);border-radius:7px;padding:3% 4%;margin-bottom:6%;font-size:clamp(8px,1.8vw,13px);border-left:4px solid var(--sp-accent,#2e8be0);color:#333}
.style-opt{border:2px solid var(--border);border-radius:10px;padding:9px 4px;text-align:center;cursor:pointer;font-size:13px;transition:.15s}
.style-opt:hover{border-color:var(--border2)}
.style-opt.active{border-color:var(--blue);background:rgba(59,130,246,.1);color:#93c0ff;font-weight:700}
.style-dot{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:5px;vertical-align:-1px}

/* ---------- 写作 ---------- */
.scene-tabs{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:18px}
.scene-tab{padding:8px 16px;background:var(--bg2);border:1px solid var(--border);border-radius:20px;color:var(--muted);font-size:13.5px}
.scene-tab.active{background:var(--grad);border-color:transparent;color:#fff;font-weight:600}
.result-box{background:#0a0e19;border:1px solid var(--border);border-radius:var(--radius-sm);padding:18px;line-height:1.85;white-space:pre-wrap;font-size:14.5px;max-height:640px;overflow-y:auto}

/* ---------- Toast ---------- */
#toast-wrap{position:fixed;top:20px;right:20px;z-index:999;display:flex;flex-direction:column;gap:10px}
.toast{background:var(--panel2);border:1px solid var(--border2);border-left:4px solid var(--blue);border-radius:10px;padding:13px 18px;min-width:260px;max-width:420px;box-shadow:0 10px 34px rgba(0,0,0,.5);animation:tin .25s;font-size:13.5px}
.toast.err{border-left-color:var(--red)}.toast.ok{border-left-color:var(--green)}
@keyframes tin{from{transform:translateX(40px);opacity:0}}

/* ---------- 管理后台 ---------- */
.admin-tabs{display:flex;gap:6px;margin-bottom:20px;border-bottom:1px solid var(--border);padding-bottom:0}
.admin-tabs button{background:transparent;padding:11px 18px;color:var(--muted);font-size:14px;border-bottom:2px solid transparent;margin-bottom:-1px}
.admin-tabs button.active{color:#9ec2ff;border-bottom-color:var(--blue);font-weight:700}
.bar-chart{display:flex;align-items:flex-end;gap:14px;height:170px;padding:10px 6px 0}
.bar-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:7px;height:100%;justify-content:flex-end}
.bar-col .bar{width:70%;max-width:52px;border-radius:6px 6px 0 0;background:linear-gradient(180deg,#8b5cf6,#3b82f6);min-height:3px;position:relative}
.bar-col .bar span{position:absolute;top:-20px;left:50%;transform:translateX(-50%);font-size:11px;color:#9ec2ff;white-space:nowrap}
.bar-col .bl{font-size:11px;color:var(--dim)}
.code-chip{font-family:Consolas,monospace;background:rgba(6,182,212,.1);border:1px dashed rgba(6,182,212,.45);color:#4fd1e5;padding:7px 12px;border-radius:8px;font-size:13px;display:inline-block;margin:4px}
.search-input{width:240px!important}

@media (max-width:1100px){.g4{grid-template-columns:1fr 1fr}.g3{grid-template-columns:1fr 1fr}.chat-sessions{display:none}}