/* ==========================================================
   AI电商生图工具 · 用户端样式
   还原参考稿：紫色渐变主色 + 灰白三栏工作台
   字体：思源黑体（Noto Sans SC，自托管 woff2，见 /fonts/noto-sans-sc/font.css）
   ========================================================== */
:root{
  --brand:#7c3aed;
  --brand-2:#6d28d9;
  --brand-3:#a855f7;
  --grad:linear-gradient(135deg,#8b5cf6 0%,#7c3aed 55%,#6d28d9 100%);
  --grad-flat:linear-gradient(90deg,#7c3aed,#a855f7);
  --bg:#ffffff;
  --side-bg:#f2f3f5;
  --card:#ffffff;
  --line:#ececf1;
  --line-2:#e3e4ea;
  --txt:#1f2329;
  --txt-2:#6b7280;
  --txt-3:#9ca3af;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --shadow:0 1px 2px rgba(17,24,39,.04),0 4px 16px rgba(17,24,39,.05);
  --blue:#2563eb;
  /* FONT-V1：思源黑体（原楷体字体栈已整体替换，变量同步更名） */
  --font-sans:"Noto Sans SC","Source Han Sans SC","思源黑体","Noto Sans CJK SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:var(--font-sans);
  color:var(--txt);background:var(--bg);font-size:14px;line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:14px;color:var(--txt)}
a{color:inherit;text-decoration:none}
[hidden]{display:none!important}

/* ---------- 顶栏 ---------- */
.topbar{
  height:64px;display:flex;align-items:center;gap:14px;padding:0 20px;
  background:#fff;position:sticky;top:0;z-index:40;
  border-bottom:1px solid #f2f2f6;
}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand-logo{
  width:42px;height:42px;border-radius:12px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;flex:none;
  box-shadow:0 4px 12px rgba(124,58,237,.28);
}
.brand-text h1{font-size:20px;font-weight:700;letter-spacing:.3px;white-space:nowrap}
.brand-sub{font-size:11.5px;color:var(--txt-3);display:block;margin-top:-3px}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:9px}
.topnav-link{
  font-size:13px;color:var(--brand);background:#f3eefe;padding:7px 15px;border-radius:999px;
  font-weight:700;transition:.15s;
}
.topnav-link:hover{background:#ece2fd}
.icon-btn{
  width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:var(--txt-2);transition:.15s;
}
.icon-btn:hover{background:#f3f4f6;color:var(--brand)}
.user-chip{display:flex;align-items:center;gap:8px}
.credits-pill{
  display:flex;align-items:center;gap:6px;background:linear-gradient(135deg,#f5f3ff,#ede9fe);
  color:var(--brand-2);font-weight:700;font-size:13px;padding:7px 12px;border-radius:999px;
  cursor:pointer;border:1px solid #e9e2fb;
}
.user-name{font-size:13px;color:var(--txt-2);max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.btn-ghost{
  font-size:13px;padding:7px 14px;border-radius:10px;border:1px solid var(--line-2);
  color:var(--txt-2);transition:.15s;font-weight:500;
}
.btn-ghost:hover{border-color:#d7d9e0;color:var(--txt)}

/* ---------- 三栏布局 ---------- */
/* LAYOUT-V1：原「右栏」.inspector 整列已挪到界面左侧，栅格顺序变为
   功能选择(196) | 结果与通用选项(388) | 参数与上传(1fr) */
.layout{
  display:grid;grid-template-columns:196px 388px minmax(0,1fr);
  gap:14px;padding:0 16px 24px;align-items:start;min-height:calc(100vh - 64px);
}

/* ---------- 左 1：功能选择栏 ---------- */
.sidebar{
  background:var(--side-bg);border-radius:var(--r-lg);padding:13px 11px;
  position:sticky;top:76px;max-height:calc(100vh - 92px);overflow:auto;
}
.side-title{
  font-size:13px;color:var(--txt-2);display:flex;align-items:center;gap:6px;
  padding:3px 7px 10px;font-weight:700;
}
.dot{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block;flex:none}
.tool-menu{display:flex;flex-direction:column;gap:6px}
.tool-item{
  text-align:left;background:#fff;border-radius:var(--r-sm);padding:10px 11px;
  font-size:13px;color:#3f4450;font-weight:500;line-height:1.35;
  border:1px solid transparent;transition:.15s;position:relative;
}
.tool-item:hover{border-color:#e6dcfb;color:var(--brand-2)}
.tool-item.active{background:var(--grad);color:#fff;font-weight:700;box-shadow:0 6px 16px rgba(124,58,237,.32)}
.menu-skeleton{height:38px;border-radius:var(--r-sm);background:linear-gradient(90deg,#fff,#fafafa,#fff);background-size:200% 100%;animation:sk 1.2s infinite}
@keyframes sk{to{background-position:-200% 0}}
.sidebar-foot{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.side-card{
  display:block;width:100%;text-align:left;background:#fff;border-radius:var(--r-sm);
  padding:10px 11px;border:1px dashed #c9c2e8;
}
.side-card.ghost{border-style:solid;border-color:#e6e6ee}
.side-card b{display:block;font-size:13px;color:var(--brand-2)}
.side-card span{font-size:11.5px;color:var(--txt-3)}
.sidebar-mask{display:none}

/* ---------- 右：参数与上传主区 ---------- */
.board{min-width:0}
.panel{
  background:var(--card);border-radius:var(--r-lg);padding:20px;box-shadow:var(--shadow);
  border:1px solid #f4f4f8;
}
.panel.slim{padding:15px 16px;margin-bottom:14px}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:11px}
.panel-title{font-size:15px;font-weight:700;display:flex;align-items:center;gap:8px;margin-bottom:14px}
.panel.slim .panel-title{margin-bottom:0}
.panel-head .panel-title{margin-bottom:0}
.panel-title .opt{
  font-size:11px;color:var(--brand);background:#f3eefe;border-radius:6px;padding:2px 8px;
  font-weight:700;font-style:normal;
}
.tabbar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.tab{
  padding:7px 15px;border-radius:999px;font-size:13px;color:var(--txt-2);
  background:#f5f5f7;font-weight:500;transition:.15s;
}
.tab.active{background:var(--grad);color:#fff;font-weight:700}
.tab:hover:not(.active){background:#efedf5}

/* ---------- 上传框 ---------- */
.up-zone{
  border:1.5px dashed #ddd6f3;border-radius:var(--r-md);padding:24px 16px;text-align:center;
  background:#fcfbff;transition:.15s;cursor:pointer;
}
.up-zone:hover,.up-zone.drag{border-color:var(--brand);background:#f7f4ff}
.up-icon{
  width:46px;height:46px;border-radius:12px;background:#efe9fd;color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin:0 auto 10px;
}
.up-icon.sm{width:36px;height:36px;border-radius:10px;margin-bottom:8px}
.up-main{font-size:14px;color:#4b5563;font-weight:500}
.up-sub{font-size:12px;color:var(--txt-3);margin-top:4px}
.up-thumbs{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;justify-content:center}
.up-thumb{position:relative;width:64px;height:64px;border-radius:10px;overflow:hidden;border:1px solid var(--line)}
.up-thumb img{width:100%;height:100%;object-fit:cover}
.up-thumb .rm{
  position:absolute;top:2px;right:2px;width:18px;height:18px;border-radius:50%;
  background:rgba(0,0,0,.55);color:#fff;font-size:12px;line-height:18px;text-align:center;
}
.up-label{font-size:12.5px;font-weight:600;color:var(--txt-2);margin:2px 0 8px;display:block}

/* AI设计小上传 */
.mini-upload{
  border:1.5px dashed #ddd6f3;border-radius:var(--r-md);padding:18px 12px;text-align:center;
  background:#fcfbff;cursor:pointer;transition:.15s;margin-bottom:12px;
}
.mini-upload:hover{border-color:var(--brand);background:#f7f4ff}
.mini-upload p{font-size:12.5px;color:var(--txt-2)}
.mini-upload .up-thumbs{margin-top:10px}

/* ---------- 字段 ---------- */
.field-block{margin-bottom:16px}
.field-label{font-size:13.5px;font-weight:700;display:flex;align-items:center;gap:7px;margin-bottom:9px}
.field-label .opt{font-size:11px;color:var(--txt-3);font-style:normal;font-weight:400}
.input{
  width:100%;height:42px;border:1.5px solid var(--line-2);border-radius:var(--r-sm);
  padding:0 13px;background:#fff;transition:.15s;outline:none;
}
.input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(124,58,237,.1)}
.input::placeholder{color:#b9bcc6}
textarea.ta{
  width:100%;border:1.5px solid var(--line-2);border-radius:var(--r-sm);padding:11px 13px;
  resize:vertical;outline:none;transition:.15s;min-height:64px;background:#fff;
}
textarea.ta:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(124,58,237,.1)}
.hint{font-size:11.5px;color:var(--txt-3);margin-top:6px}

/* ---------- 主按钮 ---------- */
.btn-primary{
  background:var(--grad);color:#fff;border-radius:var(--r-md);font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  transition:.15s;box-shadow:0 6px 18px rgba(124,58,237,.32);
}
.btn-primary:hover{filter:brightness(1.06)}
.btn-primary:disabled{opacity:.6;cursor:not-allowed;filter:none}
.btn-xl{width:100%;height:48px;font-size:15.5px;flex-direction:column;gap:1px;padding:8px}
.btn-xl small{font-size:11px;font-weight:400;opacity:.85}
.btn-block{width:100%;height:44px;font-size:15px}
.gen-hint{font-size:11.5px;color:var(--txt-3);text-align:center;margin-top:10px}
.spin{animation:rot 1s linear infinite}
@keyframes rot{to{transform:rotate(360deg)}}

/* ---------- 左 2：结果 + 内置模型 + 通用选项（原右栏） ---------- */
.inspector{min-width:0}
.result-card{
  border:1.5px dashed #ddd6f3;border-radius:var(--r-lg);background:#fdfcff;
  margin-bottom:14px;min-height:212px;overflow:hidden;
}
.result-empty{padding:38px 18px;text-align:center}
.empty-icon{
  width:58px;height:58px;border-radius:16px;background:#f1ebfe;color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin:0 auto 14px;
}
.empty-title{font-size:15px;font-weight:700;color:#4b5563}
.empty-desc{font-size:12.5px;color:var(--txt-3);margin-top:6px}
.result-body{padding:13px}
.result-imgs{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.result-imgs.solo{grid-template-columns:1fr}
.result-imgs img{
  width:100%;border-radius:var(--r-sm);display:block;background:#f6f6f9;
  aspect-ratio:1;object-fit:cover;cursor:zoom-in;
}
.result-meta{
  display:flex;flex-wrap:wrap;gap:6px;margin-top:11px;font-size:11.5px;color:var(--txt-2);
}
.tag{background:#f4f2fa;border-radius:6px;padding:3px 8px;color:#5b5470}
.tag.ok{background:#ecfdf5;color:#047857}
.tag.warn{background:#fffbeb;color:#b45309}
.result-actions{display:flex;gap:8px;margin-top:11px}
.mini-btn{
  flex:1;height:34px;border-radius:9px;border:1px solid var(--line-2);font-size:12.5px;
  color:var(--txt-2);font-weight:600;transition:.15s;background:#fff;
}
.mini-btn:hover{border-color:var(--brand);color:var(--brand)}
.mini-btn.primary{background:var(--grad);color:#fff;border:none;font-weight:700}
.mini-btn.primary:hover{filter:brightness(1.07);color:#fff}
.mini-btn:disabled{opacity:.55;cursor:not-allowed}
.mini-link{font-size:12px;color:var(--brand);font-weight:700}

/* 历史 */
.history-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;max-height:172px;overflow:auto}
.history-grid img{
  width:100%;aspect-ratio:1;object-fit:cover;border-radius:9px;background:#f6f6f9;
  cursor:pointer;border:1px solid #f0f0f4;
}
.muted{color:var(--txt-3);font-size:12.5px}

/* 分段控件 */
.seg{display:flex;background:#f4f4f7;border-radius:10px;padding:3px;gap:2px}
.seg-btn{
  flex:1;display:flex;align-items:center;justify-content:center;gap:6px;
  padding:8px 6px;border-radius:8px;font-size:12.5px;color:var(--txt-2);font-weight:600;
  transition:.15s;white-space:nowrap;
}
.seg-btn.active{background:var(--grad);color:#fff;font-weight:700;box-shadow:0 2px 8px rgba(124,58,237,.3)}
.seg-fill{width:100%}
.seg-hint{font-size:11px;color:var(--txt-3);margin:7px 0 13px;text-align:right}
.kv{margin-bottom:12px}
.kv-tight{margin-bottom:10px}
.kv label{display:block;font-size:12.5px;color:var(--txt-2);margin-bottom:6px;font-weight:600}
select.input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:34px}
.engine-note{font-size:11px;color:var(--txt-3);background:#faf9fe;border-radius:8px;padding:8px 10px;line-height:1.6}

/* ---------- 内置模型（平台统一提供） ---------- */
.builtin-block{
  background:#f4f8ff;border:1px solid #dbe8ff;border-radius:var(--r-md);
  padding:13px 13px 11px;margin-bottom:13px;
}
.builtin-block .field-label{margin-bottom:10px}
.builtin-list{display:flex;flex-direction:column;gap:7px}
.builtin-item{
  background:#fff;border:1px solid #e3ecfb;border-radius:9px;padding:8px 10px;
  position:relative;overflow:hidden;
}
.builtin-item:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,#1668ff,#00b4ff)}
.builtin-item b{font-size:12.5px;color:var(--txt);display:inline-block;padding-left:6px}
.builtin-item span{font-size:10.5px;color:#1668ff;font-weight:700;margin-left:6px;
  background:#e8f1ff;border-radius:5px;padding:1px 6px}
.builtin-item p{font-size:11px;color:var(--txt-3);margin:4px 0 0;padding-left:6px;line-height:1.55}
.api-state{font-size:11.5px;margin-top:9px;line-height:1.6;color:var(--txt-3);word-break:break-all}
.api-state.ok{color:#047857}
.api-state.err{color:#b91c1c}

/* ---------- 弹窗 ---------- */
.modal-mask{
  position:fixed;inset:0;background:rgba(17,12,32,.45);backdrop-filter:blur(3px);
  z-index:90;display:flex;align-items:center;justify-content:center;padding:20px;overflow:auto;
}
.modal{
  width:360px;max-width:100%;background:#fff;border-radius:18px;padding:22px;
  position:relative;box-shadow:0 24px 60px rgba(30,20,60,.3);
  animation:pop .18s ease;font-family:var(--font-sans);
}
.modal.wide{width:520px}
@keyframes pop{from{transform:scale(.96);opacity:0}}
.modal-x{
  position:absolute;top:12px;right:14px;font-size:20px;color:var(--txt-3);width:30px;height:30px;
  border-radius:8px;
}
.modal-x:hover{background:#f3f4f6;color:var(--txt)}
.auth-seg{margin-bottom:16px}
.form-err{font-size:12.5px;color:#dc2626;min-height:18px;margin:2px 0 8px}
.auth-tip{font-size:11.5px;color:var(--txt-3);text-align:center;margin-top:10px}

/* ---------- 自检面板 ---------- */
.diag-h{font-size:17px;font-weight:700}
.diag-sub{font-size:12.5px;color:var(--txt-2);margin:6px 0 12px}
.diag-progress{height:5px;border-radius:99px;background:#f1f0f6;overflow:hidden;margin-bottom:14px}
.diag-progress span{display:block;height:100%;width:0;background:var(--grad-flat);border-radius:99px;transition:width .25s ease}
.diag-list{display:flex;flex-direction:column;gap:8px;max-height:52vh;overflow:auto;padding-right:2px}
.diag-item{
  display:flex;gap:10px;align-items:flex-start;border:1px solid #f0f0f5;border-radius:11px;
  padding:10px 12px;background:#fdfdff;
}
.diag-item.pass{background:#f5fdf9;border-color:#d8f0e5}
.diag-item.warn{background:#fffdf4;border-color:#f4e9c8}
.diag-item.fail{background:#fff7f7;border-color:#f6d9d9}
.diag-ico{
  width:20px;height:20px;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;
  font-size:12px;color:#fff;font-weight:700;margin-top:1px;
}
.diag-item.pass .diag-ico{background:#10b981}
.diag-item.warn .diag-ico{background:#f59e0b}
.diag-item.fail .diag-ico{background:#ef4444}
.diag-item.run .diag-ico{background:#a78bfa}
.diag-body{min-width:0;flex:1}
.diag-name{font-size:13px;font-weight:700;display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.diag-ms{font-size:10.5px;color:var(--txt-3);font-weight:400}
.diag-msg{font-size:12px;color:var(--txt-2);margin-top:3px;word-break:break-word}
.diag-fix{font-size:11.5px;color:#6d28d9;margin-top:4px;background:#f5f2fe;border-radius:7px;padding:5px 8px}
.diag-foot{display:flex;gap:9px;margin-top:16px}
.diag-foot .mini-btn{flex:none;padding:0 18px}

/* ---------- Toast ---------- */
.toast{
  position:fixed;left:50%;bottom:36px;transform:translateX(-50%);z-index:99;
  background:#1f2329;color:#fff;font-size:13.5px;padding:11px 18px;border-radius:12px;
  box-shadow:0 10px 30px rgba(0,0,0,.25);max-width:88vw;animation:up .2s ease;
}
.toast.err{background:#b91c1c}
.toast.ok{background:#047857}
@keyframes up{from{transform:translate(-50%,8px);opacity:0}}

/* 图片预览 */
.lightbox{
  position:fixed;inset:0;background:rgba(10,8,20,.86);z-index:100;
  display:flex;align-items:center;justify-content:center;padding:30px;cursor:zoom-out;
}
.lightbox img{max-width:100%;max-height:100%;border-radius:12px}

/* ---------- 响应式 ---------- */
.menu-toggle{display:none}
@media (max-width:1240px){
  .layout{grid-template-columns:186px 340px minmax(0,1fr)}
  .history-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1080px){
  /* LAYOUT-V1：两列时让功能选择竖栏跨两行，第二列依次放「通用选项栏」和「参数主区」，
     不能让 .inspector 用 grid-column:1/-1 整行铺开，否则主区会被挤到 186px 那一列 */
  .layout{grid-template-columns:186px minmax(0,1fr)}
  .sidebar{grid-row:1 / span 2}
  .inspector{grid-column:2;display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:start}
  .board{grid-column:2}
  .result-card{margin-bottom:0}
}
@media (max-width:820px){
  .menu-toggle{display:flex}
  .layout{grid-template-columns:1fr;padding:0 10px 20px;gap:12px}
  .sidebar{
    position:fixed;left:0;top:0;bottom:0;width:270px;z-index:80;border-radius:0;
    transform:translateX(-100%);transition:.22s;max-height:none;grid-row:auto;
  }
  .sidebar.open{transform:none}
  .sidebar-mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:70}
  .sidebar-mask.show{display:block}
  .inspector{grid-column:auto;grid-template-columns:1fr}
  .board{grid-column:auto}
  .brand-text h1{font-size:16px}
  .topnav-link{display:none}
  .panel{padding:16px}
  .up-zone{padding:20px 12px}
  .modal.wide{width:100%}
}