/* ══════════════════════════════════════════════════════════
   电商图片直链库 · image.ruimiltd.com
   设计令牌对齐参考站（slate 深色头部 + amber 主色 + #f4f5f7 底）
   ══════════════════════════════════════════════════════════ */
:root{
  --bg:#f4f5f7;
  --header:#17202a;
  --slate-50:#f8fafc; --slate-100:#f1f5f9; --slate-200:#e2e8f0; --slate-300:#cbd5e1;
  --slate-400:#94a3b8; --slate-500:#64748b; --slate-600:#475569; --slate-700:#334155;
  --slate-800:#1e293b; --slate-900:#0f172a; --slate-950:#020617;
  --amber-50:#fffbeb; --amber-100:#fef3c7; --amber-200:#fde68a; --amber-300:#fcd34d;
  --amber-400:#fbbf24; --amber-500:#f59e0b; --amber-900:#78350f; --amber-950:#451a03;
  --red-50:#fef2f2; --red-700:#b91c1c;
  --r-sm:6px; --r:8px; --r-lg:10px; --r-xl:12px; --r-2xl:16px;
  --ring:0 0 0 3px rgba(251,191,36,.4);
  --shadow-sm:0 1px 2px 0 rgba(15,23,42,.05);
  --shadow-md:0 4px 6px -1px rgba(15,23,42,.07),0 2px 4px -2px rgba(15,23,42,.05);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--slate-900);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:14px; line-height:1.5;
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
}
.hidden{display:none !important}
.grow{flex:1}
h1,h2,h3,p,ul{margin:0}
ul{padding:0;list-style:none}
input,select,button,textarea{font:inherit;color:inherit}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}

/* ── 通用控件 ── */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:6px;
  height:36px; padding:0 16px; border-radius:var(--r); border:1px solid transparent;
  background:transparent; cursor:pointer; font-size:14px; font-weight:500; white-space:nowrap;
  transition:background-color .15s,border-color .15s,color .15s,box-shadow .15s;
}
.btn:focus-visible{outline:none;box-shadow:var(--ring)}
.btn svg{width:16px;height:16px;flex:none}
.btn-sm{height:32px;padding:0 12px;font-size:14px}
.btn-sm svg{width:16px;height:16px}
.btn-lg{height:44px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.btn-icon{width:36px;padding:0;flex:none}
.btn-outline{background:#fff;border-color:var(--slate-300);box-shadow:var(--shadow-sm)}
.btn-outline:hover{background:var(--slate-100)}
.btn-amber{background:var(--amber-400);color:var(--slate-950);font-weight:500}
.btn-amber:hover{background:var(--amber-300)}
.btn-amber:disabled,.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-danger{background:#fff;border-color:var(--slate-300);color:var(--red-700);box-shadow:var(--shadow-sm)}
.btn-danger:hover{background:#fef2f2;border-color:#fecaca}
.btn-danger:disabled{color:var(--slate-400)}
input[type=text],input[type=password],input:not([type]),select{
  width:100%; height:36px; min-width:0; padding:0 12px; border:1px solid var(--slate-300);
  border-radius:var(--r); background:#fff; font-size:14px;
  transition:border-color .15s,box-shadow .15s;
}
input::placeholder{color:var(--slate-400)}
input:focus,select:focus{outline:none;border-color:var(--amber-400);box-shadow:var(--ring)}
.select{height:32px;width:auto;min-width:150px;padding-right:28px;font-size:14px;cursor:pointer;
  appearance:none;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 8px center/14px;}
.fld-label{display:block;margin-bottom:6px;font-size:12px;font-weight:500;color:var(--slate-700)}
.hint{margin-top:6px;font-size:11px;line-height:1.45;color:var(--slate-400)}
.space-y>*+*{margin-top:12px}
.form-err{color:var(--red-700);font-size:12px;min-height:16px}
.row{display:flex;gap:8px}

/* ── 登录 ── */
.login{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.login-card{
  width:100%;max-width:380px;background:#fff;border:1px solid var(--slate-200);
  border-radius:var(--r-2xl);box-shadow:var(--shadow-sm);padding:32px;
}
.login-logo{
  width:48px;height:48px;border-radius:var(--r-xl);background:var(--amber-400);color:var(--slate-950);
  display:grid;place-items:center;margin-bottom:16px;
}
.login-logo svg{width:26px;height:26px}
.login-card h1{font-size:18px;font-weight:600;letter-spacing:-.025em}
.login-sub{font-size:12px;color:var(--slate-500);margin:2px 0 22px}
.login-card label{display:block;margin-bottom:12px;font-size:12px;font-weight:500;color:var(--slate-700)}
.login-card input{margin-top:6px}
.login-err{color:var(--red-700);font-size:12px;min-height:18px;margin-bottom:6px}

/* ── 页头 ── */
.page{min-height:100vh}
.topbar{background:var(--header);color:#fff;border-bottom:1px solid var(--slate-800)}
.topbar-in{
  max-width:1500px;margin:0 auto;padding:16px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{width:40px;height:40px;border-radius:var(--r-xl);background:var(--amber-400);color:var(--slate-950);display:grid;place-items:center;flex:none}
.brand-logo svg{width:24px;height:24px}
.brand h1{font-size:18px;font-weight:600;letter-spacing:-.025em}
.brand p{font-size:12px;color:var(--slate-400);margin-top:1px}
.user-area{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--slate-300)}
.user-name{max-width:224px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.icon-btn{
  width:32px;height:32px;flex:none;display:inline-grid;place-items:center;border:0;border-radius:var(--r);
  background:transparent;color:var(--slate-300);cursor:pointer;transition:background-color .15s,color .15s;
}
.icon-btn svg{width:17px;height:17px}
.icon-btn:hover{background:rgba(255,255,255,.1);color:#fff}
.icon-btn.light{color:#fff;background:rgba(255,255,255,.12)}
.icon-btn.light:hover{background:rgba(255,255,255,.24)}

/* ── 布局 ── */
.layout{
  max-width:1500px;margin:0 auto;padding:24px 16px;
  display:grid;gap:24px;grid-template-columns:minmax(0,1fr);
}
@media(min-width:640px){.topbar-in,.layout{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){
  .layout{grid-template-columns:360px minmax(0,1fr);padding-left:32px;padding-right:32px}
}
.side{display:flex;flex-direction:column;gap:20px;min-width:0}

/* ── 卡片 ── */
.card{background:#fff;border:1px solid var(--slate-200);border-radius:var(--r-2xl);box-shadow:var(--shadow-sm);overflow:hidden}
.card-head{padding:16px 20px;border-bottom:1px solid var(--slate-100)}
.card-head h2{font-size:14px;font-weight:600}
.card-head p{margin-top:4px;font-size:12px;line-height:1.45;color:var(--slate-500)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:12px}

/* 文件夹列表 */
.folder-list{max-height:208px;overflow:auto;border:1px solid var(--slate-200);border-radius:var(--r-xl);padding:8px;display:flex;flex-direction:column;gap:4px}
.folder-item{
  display:flex;align-items:center;border-radius:var(--r-lg);
  transition:background-color .15s,color .15s;
}
.folder-item:hover{background:var(--slate-50)}
.folder-item.on{background:var(--slate-900);color:#fff}
.folder-pick{
  display:flex;align-items:center;gap:8px;min-width:0;flex:1;
  padding:8px 12px;border:0;border-radius:var(--r-lg);background:transparent;
  cursor:pointer;text-align:left;font-size:14px;color:inherit;
}
.folder-pick svg{width:16px;height:16px;flex:none;color:var(--slate-400)}
.folder-item.on .folder-pick svg{color:var(--amber-400)}
.folder-pick .fname{min-width:0;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.folder-pick .fcount{font-size:12px;opacity:.6;flex:none}
.folder-acts{display:none;gap:2px;flex:none;padding-right:8px}
.folder-item:hover .folder-acts{display:flex}
.folder-acts button{
  width:24px;height:24px;display:grid;place-items:center;border:0;border-radius:5px;
  background:transparent;color:var(--slate-400);cursor:pointer;
}
.folder-acts button:hover{background:var(--slate-200);color:var(--slate-800)}
.folder-item.on .folder-acts button{color:var(--slate-400)}
.folder-item.on .folder-acts button:hover{background:rgba(255,255,255,.18);color:#fff}
.folder-acts svg{width:13px;height:13px}

/* 提示条 */
.alert{display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:var(--r-lg);font-size:12px}
.alert svg{width:14px;height:14px;flex:none}
.alert.red{background:var(--red-50);color:var(--red-700)}

/* 上传区 */
.dropzone{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  width:100%;min-height:176px;padding:20px;text-align:center;cursor:pointer;
  border:2px dashed var(--slate-300);border-radius:var(--r-xl);background:var(--slate-50);
  transition:border-color .15s,background-color .15s;
}
.dropzone:hover,.dropzone.over{border-color:var(--amber-400);background:rgba(255,251,235,.5)}
.dropzone:disabled{opacity:.55;cursor:not-allowed}
.dz-ico{width:34px;height:34px;color:var(--slate-400);margin-bottom:6px}
.dz-main{font-size:14px;font-weight:500}
.dz-sub{margin-top:4px;font-size:12px;color:var(--slate-500)}

/* 上传进度 */
.upl{display:flex;flex-direction:column;gap:6px}
.upl-text{font-size:12px;color:var(--slate-600)}
.upl-track{height:6px;background:var(--slate-100);border-radius:99px;overflow:hidden}
.upl-fill{height:100%;width:0;background:var(--amber-400);border-radius:99px;transition:width .2s}

/* 平台说明 */
.note{
  display:flex;gap:12px;padding:20px;border-radius:var(--r-2xl);
  border:1px solid var(--amber-200);background:var(--amber-50);
}
.note>svg{width:17px;height:17px;flex:none;color:var(--amber-900);margin-top:2px}
.note h3{font-size:13px;font-weight:600;color:var(--amber-950)}
.note ul{margin-top:8px;display:flex;flex-direction:column;gap:6px;font-size:12px;line-height:1.45;color:rgba(120,53,15,.78)}

/* ── 主区 ── */
.main-card{min-width:0}
.main-head{border-bottom:1px solid var(--slate-200);padding:16px}
.main-head-row{display:flex;flex-direction:column;gap:16px}
@media(min-width:1280px){.main-head-row{flex-direction:row;align-items:center;justify-content:space-between}}
@media(min-width:640px){.main-head{padding:20px}}
.main-stat{margin-left:4px;font-size:12px;font-weight:400;color:var(--slate-400)}
.head-title h2{font-size:14px;font-weight:600}
.main-sub{margin-top:4px;font-size:12px;color:var(--slate-500)}
.toolbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.move-group{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.main-head-row2{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-top:14px}
.chk{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--slate-600);cursor:pointer;user-select:none;white-space:nowrap}
.chk input{width:15px;height:15px;accent-color:var(--amber-500);cursor:pointer;margin:0}
.search{position:relative;display:flex;align-items:center;min-width:240px;flex:1;max-width:380px}
.search svg{position:absolute;left:10px;width:15px;height:15px;color:var(--slate-400);pointer-events:none}
.search input{padding-left:32px;height:32px;font-size:13px}

/* 网格 */
.grid{display:grid;gap:16px;grid-template-columns:minmax(0,1fr);padding:16px}
@media(min-width:640px){.grid{grid-template-columns:repeat(2,minmax(0,1fr));padding:20px}}
@media(min-width:1280px){.grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(min-width:1536px){.grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.card-item{
  position:relative;background:#fff;border:1px solid var(--slate-200);border-radius:var(--r-xl);
  overflow:hidden;transition:border-color .15s,box-shadow .15s;
}
.card-item:hover{border-color:var(--slate-300);box-shadow:var(--shadow-md)}
.card-item.on{border-color:var(--amber-400);box-shadow:0 0 0 1px var(--amber-400)}
.thumb{position:relative;display:block;width:100%;aspect-ratio:1/1;overflow:hidden;background:var(--slate-50);border:0;padding:0;cursor:pointer}
.thumb img{width:100%;height:100%;object-fit:contain;transition:transform .3s}
.card-item:hover .thumb img{transform:scale(1.03)}
.cbox{
  position:absolute;left:12px;top:12px;width:24px;height:24px;display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.85);border-radius:var(--r-sm);background:rgba(255,255,255,.9);
  box-shadow:var(--shadow-sm);color:transparent;transition:background-color .15s,color .15s;
}
.cbox svg{width:14px;height:14px}
.card-item.on .cbox{background:var(--amber-400);border-color:var(--amber-400);color:var(--slate-950)}
.zoom{
  position:absolute;right:10px;top:10px;width:26px;height:26px;display:grid;place-items:center;
  border:0;border-radius:var(--r-sm);background:rgba(15,23,42,.65);color:#fff;cursor:pointer;
  opacity:0;transition:opacity .15s;
}
.zoom svg{width:14px;height:14px}
.card-item:hover .zoom{opacity:1}
.card-meta{padding:12px}
.fname{font-size:13px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fmeta{margin-top:4px;display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--slate-400)}
.card-actions{margin-top:12px;display:grid;grid-template-columns:1fr 1fr;gap:8px}
.card-actions .btn{font-size:13px}

/* 空状态 / 加载更多 */
.empty{padding:64px 24px;text-align:center;color:var(--slate-400);font-size:13px}
.more-wrap{padding:0 20px 20px;display:flex;justify-content:center}

/* ── 拖拽遮罩 ── */
.drop-mask{position:fixed;inset:0;z-index:60;background:rgba(23,32,42,.72);display:grid;place-items:center}
.drop-inner{
  padding:40px 56px;border:2px dashed var(--amber-400);border-radius:var(--r-2xl);
  background:rgba(255,255,255,.08);color:#fff;font-size:16px;font-weight:500;
}

/* ── 预览 ── */
.viewer{position:fixed;inset:0;z-index:70;background:rgba(15,23,42,.92);display:flex;flex-direction:column}
.viewer-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;color:#fff;font-size:13px}
.viewer-bar span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60%}
.viewer img{flex:1;min-height:0;width:100%;object-fit:contain;padding:0 24px 24px}

/* ── 对话框 ── */
.modal{position:fixed;inset:0;z-index:80;background:rgba(15,23,42,.45);display:grid;place-items:center;padding:20px}
.dialog{width:100%;max-width:520px;background:#fff;border-radius:var(--r-2xl);box-shadow:0 20px 40px -12px rgba(15,23,42,.28);overflow:hidden}
.dialog.small{max-width:400px}
.dlg-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;border-bottom:1px solid var(--slate-100);font-size:14px;font-weight:600}
.dlg-x{width:28px;height:28px;border:0;border-radius:var(--r-sm);background:transparent;color:var(--slate-400);cursor:pointer;font-size:15px}
.dlg-x:hover{background:var(--slate-100);color:var(--slate-700)}
.dlg-body{padding:20px;font-size:13px;color:var(--slate-600);max-height:60vh;overflow:auto}
.dlg-body b{color:var(--slate-900)}
.dlg-foot{display:flex;justify-content:flex-end;gap:8px;padding:14px 20px;border-top:1px solid var(--slate-100);background:var(--slate-50)}

/* ── Toast ── */
.toast{
  position:fixed;left:50%;bottom:28px;transform:translateX(-50%);z-index:90;
  max-width:min(520px,92vw);padding:11px 18px;border-radius:var(--r-lg);
  background:var(--slate-900);color:#fff;font-size:13px;box-shadow:0 12px 28px -8px rgba(15,23,42,.5);
}
.toast.err{background:var(--red-700)}
.toast.ok{background:#065f46}