:root{
  --bg:#ffffff; --surface:#f8fafd; --chip:#f0f4f9; --chip-hover:#e4e9f1;
  --line:#e0e3e7; --line2:#dadce0;
  --text:#202124; --muted:#5f6368; --brand:#1a73e8; --brand-dark:#1666cc;
  --danger:#d93025; --ok:#188038; --admin:#8430ce; --aff:#1a73e8;
  --shadow:0 1px 2px rgba(60,64,67,.15),0 1px 3px 1px rgba(60,64,67,.08);
  --radius:12px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:"Google Sans","Roboto",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  font-size:14px;line-height:1.5}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:none}

/* ---- top bar ---- */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:20px;
  padding:8px 22px;background:var(--bg);border-bottom:1px solid var(--line)}
.brand{font-size:20px;font-weight:500;color:var(--text);display:flex;align-items:center;gap:8px}
.brand:hover{text-decoration:none}
.topnav{margin-left:auto;display:flex;align-items:center;gap:20px;font-size:14px}
.topnav a{color:var(--muted);padding:6px 4px}
.topnav a:hover{color:var(--text)}
.who{color:var(--muted);display:flex;align-items:center;gap:8px}
.logout{color:var(--brand)!important}

/* ---- layout ---- */
.container{max-width:1160px;margin:0 auto;padding:22px 26px 80px}
.page-head{margin-bottom:20px}
.page-head h1{margin:6px 0 2px;font-size:22px;font-weight:500}
.page-head .muted{font-size:13px}
.back{font-size:13px;color:var(--muted);display:inline-block;margin-bottom:6px}
.back:hover{color:var(--brand)}
.muted{color:var(--muted)}
.empty{color:var(--muted);padding:40px;text-align:center;background:var(--surface);
  border-radius:var(--radius)}

/* section labels like Drive ("Folders" / "Files") */
.section-label{font-size:14px;font-weight:500;color:var(--text);margin:22px 0 12px}

.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;margin-bottom:20px}
.card h2{margin:0 0 14px;font-size:15px;font-weight:500}

/* ---- badges / pills ---- */
.badge{font-size:11px;text-transform:capitalize;letter-spacing:.2px;padding:2px 9px;
  border-radius:999px;color:#fff;font-weight:500}
.badge-admin{background:var(--admin)}
.badge-aff{background:var(--aff)}
.pill{display:inline-block;min-width:30px;text-align:center;background:var(--chip);
  border-radius:999px;padding:2px 10px;color:var(--muted);font-variant-numeric:tabular-nums}
.ok{color:var(--ok)}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--brand);color:#fff;border:0;
  border-radius:999px;padding:9px 20px;font-size:14px;font-weight:500;cursor:pointer;
  font-family:inherit;box-shadow:var(--shadow)}
.btn:hover{background:var(--brand-dark);text-decoration:none}
.btn-sm{display:inline-flex;align-items:center;gap:6px;background:var(--bg);color:var(--brand);
  border:1px solid var(--line2);border-radius:999px;padding:6px 14px;font-size:13px;
  font-weight:500;cursor:pointer;font-family:inherit}
.btn-sm:hover{background:var(--surface);text-decoration:none}
.btn-danger-sm{background:transparent;color:var(--danger);border:0;border-radius:8px;
  padding:8px 10px;font-size:13px;cursor:pointer;font-family:inherit;text-align:left;width:100%}
.btn-danger-sm:hover{background:#fce8e6}

/* ---- forms ---- */
.inline-form{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
input[type=text],input[type=password],select{
  background:var(--bg);border:1px solid var(--line2);color:var(--text);
  border-radius:8px;padding:10px 12px;font-size:14px;min-width:200px;font-family:inherit}
input:focus,select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 1px var(--brand)}
label{display:block;margin:10px 0;font-size:13px;color:var(--muted)}
label input{width:100%;margin-top:5px}

/* ---- Drive-style folder grid ---- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.folder-card{position:relative;background:var(--chip);border:1px solid transparent;
  border-radius:var(--radius);padding:14px 14px;display:flex;align-items:center;gap:12px;
  transition:background .15s}
.folder-card:hover{background:var(--chip-hover)}
.folder-link{color:var(--text);display:flex;align-items:center;gap:12px;flex:1;min-width:0}
.folder-link:hover{text-decoration:none}
.folder-icon{font-size:22px;flex-shrink:0}
.folder-body{min-width:0}
.folder-name{font-weight:500;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.folder-meta{color:var(--muted);font-size:12px;margin-top:2px}

/* ---- 3-dot menu (Drive style) ---- */
.menu{position:relative}
.menu>summary{list-style:none;cursor:pointer;width:32px;height:32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:18px;
  user-select:none}
.menu>summary::-webkit-details-marker{display:none}
.menu>summary:hover{background:rgba(60,64,67,.08)}
.menu-pop{position:absolute;right:0;top:36px;z-index:30;background:var(--bg);
  border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);
  min-width:220px;padding:6px}
.menu-pop .rename-form{display:flex;flex-direction:column;gap:6px;padding:8px}
.menu-pop .rename-form input{min-width:0;width:100%}
.menu-sep{height:1px;background:var(--line);margin:4px 0}

/* ---- tables (file list) ---- */
table.data{width:100%;border-collapse:collapse;font-size:14px}
table.data th{text-align:left;color:var(--muted);font-weight:500;font-size:12px;
  padding:8px 12px;border-bottom:1px solid var(--line)}
table.data tbody tr:hover{background:var(--surface)}
table.data td{padding:12px;border-bottom:1px solid var(--line);vertical-align:middle}
.file-title{display:flex;align-items:center;gap:12px}
.file-ico{font-size:18px;color:var(--brand)}
.center{text-align:center}
.nowrap{white-space:nowrap}
.actions{display:flex;gap:6px;align-items:center;justify-content:flex-end}

/* ---- messages ---- */
.success{background:#e6f4ea;border:1px solid #b7dfc0;color:#137333;
  padding:10px 14px;border-radius:8px;margin-bottom:16px;font-size:13px}
.error{background:#fce8e6;border:1px solid #f3c1bc;color:#c5221f;
  padding:10px 14px;border-radius:8px;margin-bottom:16px;font-size:13px}
.notice{color:var(--muted)}

/* ---- upload progress ---- */
.upload-list{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.upload-row{display:grid;grid-template-columns:1fr 180px 80px;gap:12px;align-items:center;font-size:13px}
.up-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.up-bar{background:var(--chip);border-radius:999px;height:6px;overflow:hidden}
.up-fill{background:var(--brand);height:100%;width:0;transition:width .2s}
.up-pct{text-align:right;color:var(--muted);font-variant-numeric:tabular-nums}
.up-done .up-fill{background:var(--ok)}
.up-error .up-pct{color:var(--danger)}

/* file input styled like a dropzone */
input[type=file]{display:block;margin-top:6px;font-size:13px;color:var(--muted);
  border:1px dashed var(--line2);border-radius:10px;padding:16px;width:100%;background:var(--surface)}

/* ---- auth pages ---- */
.auth-body{display:flex;min-height:100vh;align-items:center;justify-content:center;padding:20px;
  background:var(--surface)}
.auth-card{background:var(--bg);border:1px solid var(--line);border-radius:14px;
  padding:36px;width:100%;max-width:400px;box-shadow:var(--shadow)}
.auth-card h1{margin:0 0 6px;font-size:22px;font-weight:500}
.auth-card .btn{width:100%;justify-content:center;margin-top:10px}

details.reset{display:inline-block}
details.reset summary{list-style:none;cursor:pointer}
details.reset[open]{margin-top:6px}

.sitefoot{color:var(--muted);text-align:center;padding:24px;font-size:12px;border-top:1px solid var(--line)}