:root{--ink:#17212b;--muted:#687582;--line:#dce3e8;--surface:#fff;--soft:#f3f6f8;--brand:#0a2342;--accent:#d9e9f8;--success:#16754a;--danger:#b42318;--radius:8px;--shadow:0 18px 50px rgba(18,33,49,.12)}
*{box-sizing:border-box}
html{min-height:100%;background:#eef3f6}
body{min-height:100vh;margin:0;color:var(--ink);font-family:Inter,"Segoe UI",Arial,sans-serif;background:linear-gradient(135deg,#eef5fa 0,#f8fafb 48%,#edf1f3 100%)}
button,input,select{font:inherit}
a{color:inherit}
.app-shell{min-height:100vh;display:flex;flex-direction:column}
.topbar{height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 24px;border-bottom:1px solid rgba(10,35,66,.1);background:rgba(255,255,255,.76);backdrop-filter:blur(16px)}
.topbar-logo{width:180px;height:auto;display:block}
.topbar-actions{display:flex;align-items:center;gap:8px}
.icon-action,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;padding:0 14px;border:1px solid var(--line);border-radius:7px;background:#fff;color:var(--brand);font-weight:650;text-decoration:none;cursor:pointer;transition:.18s ease}
.icon-action:hover,.button:hover{border-color:#9fb3c7;background:#f8fbfd}
.icon-action .icon{font-size:18px;line-height:1}
.button.primary{border-color:var(--brand);background:var(--brand);color:#fff}
.button.danger{border-color:#f0c5c1;background:#fff7f6;color:var(--danger)}
.button.small{min-height:34px;padding:0 11px;font-size:13px}
.page{width:min(1060px,calc(100% - 32px));margin:auto;padding:36px 0}
.upload-panel{width:min(720px,100%);margin:0 auto;padding:36px;background:rgba(255,255,255,.9);border:1px solid rgba(10,35,66,.1);border-radius:var(--radius);box-shadow:var(--shadow)}
.eyebrow{margin:0 0 7px;color:#597087;font-size:12px;font-weight:750;text-transform:uppercase;letter-spacing:.08em}
h1{margin:0;color:var(--brand);font-size:34px;line-height:1.15;letter-spacing:0}
.lede{margin:9px 0 26px;color:var(--muted);line-height:1.55}
.drop-zone{display:flex;min-height:218px;flex-direction:column;align-items:center;justify-content:center;padding:28px;border:2px dashed #b8c8d7;border-radius:var(--radius);background:#f9fbfc;text-align:center;cursor:pointer;transition:.18s ease}
.drop-zone:hover,.drop-zone.is-dragging{border-color:var(--brand);background:#f0f6fb;transform:translateY(-1px)}
.drop-symbol{display:grid;width:52px;height:52px;place-items:center;margin-bottom:14px;border-radius:50%;background:var(--accent);color:var(--brand);font-size:28px;font-weight:400}
.drop-zone strong{font-size:18px}
.drop-zone span{margin-top:6px;color:var(--muted);font-size:14px}
.drop-zone input{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:650;color:#3d4c59}
.field input,.field select{width:100%;height:48px;padding:0 13px;border:1px solid #cfd8df;border-radius:7px;background:#fff;color:var(--ink);outline:none}
.field input:focus,.field select:focus{border-color:#6f91b0;box-shadow:0 0 0 3px rgba(111,145,176,.15)}
.signed-user{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border:1px solid #cfe4d9;border-radius:7px;background:#f4fbf7;color:#275d43;font-size:14px}
.upload-mode{display:grid;grid-template-columns:1fr 1fr;gap:5px;margin-bottom:14px;padding:4px;border:1px solid #d6e0e7;border-radius:8px;background:#f1f5f7}.upload-mode label{cursor:pointer}.upload-mode input{position:absolute;opacity:0;pointer-events:none}.upload-mode span{display:flex;align-items:center;justify-content:center;gap:8px;height:40px;border-radius:6px;color:#596a77;font-size:13px;font-weight:700}.upload-mode input:checked+span{background:#fff;color:#0a2342;box-shadow:0 2px 8px rgba(18,33,49,.1)}
.submit-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:20px}
.submit-row .button{min-width:190px}
.limit-note{color:var(--muted);font-size:12px}
.progress-wrap{display:none;margin-top:18px}.progress-wrap.is-visible{display:block}
.progress-track{height:8px;overflow:hidden;border-radius:4px;background:#e4e9ed}.progress-bar{width:0;height:100%;background:var(--brand);transition:width .15s}
.progress-status{display:flex;justify-content:space-between;margin-top:8px;color:var(--muted);font-size:13px}.progress-status.is-error{color:var(--danger)}
.version{padding:18px;text-align:center;color:#8a959e;font-size:11px}
.auth-card{width:min(460px,calc(100% - 32px));margin:auto;padding:32px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
.auth-card .topbar-logo{margin-bottom:30px}.auth-card h1{font-size:28px}.auth-card .field{margin-top:16px}.auth-card .button{width:100%;margin-top:20px}.message{margin:16px 0 0;padding:12px 14px;border-radius:7px;background:#fff4f2;color:var(--danger);font-size:14px}.message.success{background:#f1faf5;color:var(--success)}
.admin-page{width:min(1240px,calc(100% - 32px));margin:0 auto;padding:30px 0}
.admin-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:24px}.admin-heading h1{font-size:30px}.admin-heading p{margin:6px 0 0;color:var(--muted)}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:22px}.stat{padding:18px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.stat strong{display:block;color:var(--brand);font-size:25px}.stat span{color:var(--muted);font-size:13px}
.admin-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:20px;align-items:start}
.section{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden}.section-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid var(--line)}.section-head h2{margin:0;font-size:17px;color:var(--brand)}
.transfer{border-bottom:1px solid var(--line)}.transfer:last-child{border-bottom:0}.transfer-head{display:grid;grid-template-columns:minmax(180px,1fr) repeat(4,minmax(100px,auto));gap:14px;align-items:center;padding:14px 18px;background:#fafcfd;font-size:12px;color:var(--muted)}.transfer-head strong{display:block;color:var(--ink);font-size:14px}.transfer-actions{text-align:right}
.file-row{display:grid;grid-template-columns:54px minmax(160px,1fr) 100px auto;gap:14px;align-items:center;padding:12px 18px}.file-row+.file-row{border-top:1px solid #edf0f2}.file-preview{display:grid;width:48px;height:48px;place-items:center;overflow:hidden;border-radius:6px;background:#eef3f7;color:#456078;font-size:11px;font-weight:800;text-transform:uppercase;text-decoration:none}.file-preview img,.file-preview video{width:100%;height:100%;object-fit:cover}.file-name{min-width:0}.file-name strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}.file-name span{color:var(--muted);font-size:12px}.file-size{text-align:right;font-size:13px;font-weight:650}.file-tools{display:flex;align-items:center;justify-content:flex-end;gap:5px}
.file-type-icon{display:grid;width:48px;height:48px;grid-template-rows:1fr auto;place-items:center;padding:7px 5px 5px;border:1px solid #dce5ec;border-radius:7px;background:#eef3f7;color:#315673}.file-type-icon .ui-icon{width:19px!important;height:19px!important;max-width:19px!important;max-height:19px!important}.file-type-icon small{font-size:8px;font-weight:800;line-height:1;color:#536d82}.file-type-image{background:#eef8f2;color:#28704d}.file-type-video{background:#f5f0fa;color:#6b4488}.file-type-pdf,.file-type-document{background:#fff2f0;color:#a6382d}.file-type-sheet{background:#eef8f2;color:#28704d}.file-type-archive{background:#fff8e8;color:#8a651f}.file-type-cad{background:#edf4fb;color:#245c89}
.auth-link{display:block;margin:15px 0 0;text-align:center;color:#315673;font-size:13px;font-weight:650;text-decoration:none}.auth-link:hover{text-decoration:underline}
.admin-notice{margin:0 0 18px}.admin-tabs{display:flex;gap:4px;margin-bottom:20px;border-bottom:1px solid #cad5de}.admin-tabs a{padding:11px 16px;border-bottom:3px solid transparent;color:#5b6975;font-size:14px;font-weight:700;text-decoration:none}.admin-tabs a:hover{color:var(--brand)}.admin-tabs a.active{border-color:var(--brand);color:var(--brand)}
.filter-bar{display:flex;align-items:center;gap:5px;margin:-4px 0 18px}.filter-bar span{margin-right:5px;color:var(--muted);font-size:12px}.filter-bar a{padding:7px 11px;border:1px solid var(--line);border-radius:6px;background:#fff;color:#566572;font-size:12px;font-weight:650;text-decoration:none}.filter-bar a.active{border-color:var(--brand);background:var(--brand);color:#fff}
.users-layout,.user-detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:20px;align-items:start}.admin-user-list{display:flex;flex-direction:column}.admin-user-row{display:grid;grid-template-columns:minmax(220px,1fr) 100px 120px 24px;gap:16px;align-items:center;padding:14px 18px;border-bottom:1px solid #edf0f2;text-decoration:none}.admin-user-row:last-child{border-bottom:0}.admin-user-row:hover{background:#f7fafc}.admin-user-row strong{display:block;font-size:13px}.admin-user-row span{display:block;margin-top:2px;color:var(--muted);font-size:11px}.admin-user-row .row-arrow{margin:0;color:#46627a;font-size:24px;text-align:right}.mail-warning{margin-bottom:14px;padding:10px 11px;border:1px solid #efd8a6;border-radius:6px;background:#fff9ea;color:#73591f;font-size:12px;line-height:1.45}.user-overview dl{margin:0;padding:4px 18px 18px}.user-overview dt{margin-top:14px;color:var(--muted);font-size:11px;text-transform:uppercase}.user-overview dd{margin:3px 0 0;overflow-wrap:anywhere;font-size:13px;font-weight:650}.user-overview form{padding:0 18px 18px}.user-overview .button{width:100%}
.account-storage-settings{margin:0 18px 18px;padding:16px;border:1px solid var(--line);border-radius:7px;background:#f8fafb}.account-storage-settings h3{margin:0 0 10px;color:var(--brand);font-size:15px}.account-storage-settings p{margin:0;color:var(--muted);font-size:12px;line-height:1.5}.account-storage-settings form{padding:0}.account-storage-settings .field{margin:12px 0}.setting-toggle{display:flex;align-items:center;gap:9px;font-size:13px;font-weight:650}.setting-toggle input{width:17px;height:17px;accent-color:var(--brand)}
.expiration-dialog{width:min(430px,calc(100% - 30px));padding:0;border:0;border-radius:8px;box-shadow:0 24px 70px rgba(0,0,0,.24)}.expiration-dialog::backdrop{background:rgba(19,31,43,.38)}.expiration-dialog header{display:flex;align-items:center;justify-content:space-between;padding:17px 20px;border-bottom:1px solid #e2e7eb}.expiration-dialog h2{margin:0;color:var(--brand);font-size:18px}.expiration-dialog form>div{padding:20px}.expiration-dialog footer{display:flex;justify-content:flex-end;gap:8px;padding:13px 20px;border-top:1px solid #e2e7eb;background:#f8fafb}.expiration-dialog select{width:100%;height:44px;padding:0 11px;border:1px solid #ccd6dd;border-radius:6px}.drive-close{border:0;background:transparent;color:#637481;font-size:20px;cursor:pointer}
.mail-settings{width:min(850px,100%);border:1px solid var(--line);border-radius:8px;background:#fff;overflow:hidden;box-shadow:0 6px 20px rgba(18,33,49,.05)}.mail-settings .section-head{padding:18px 22px}.mail-settings .section-head p{margin:5px 0 0;color:var(--muted);font-size:12px}.settings-source{padding:6px 9px;border-radius:5px;background:#eaf3fa;color:#315d7d;font-size:11px;font-weight:700}.mail-settings-form{padding:22px}.settings-grid{display:grid;grid-template-columns:minmax(0,2fr) 110px 150px;gap:15px}.settings-host{min-width:0}.settings-wide{grid-column:1/-1}.mail-settings-form .field small{color:var(--muted);font-size:11px}.mail-settings-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px;padding-top:18px;border-top:1px solid #e5eaee}.settings-updated{margin-top:12px;color:var(--muted);font-size:11px;text-align:right}
.invite-box{padding:18px}.invite-box .field{margin-bottom:12px}.invite-box .button{width:100%}.invite-link{margin-top:14px;padding:11px;border:1px solid #cfe4d9;border-radius:7px;background:#f4fbf7;color:#275d43;word-break:break-all;font-size:12px}
.user-list{border-top:1px solid var(--line)}.user-item{padding:12px 18px;border-bottom:1px solid #edf0f2}.user-item:last-child{border-bottom:0}.user-item strong{display:block;font-size:13px}.user-item span{color:var(--muted);font-size:12px}
.empty{padding:34px;text-align:center;color:var(--muted)}
.action-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.action-grid .button{width:100%;margin:0}.action-icon{font-size:18px;line-height:1}.ui-icon{width:18px;height:18px;display:block;flex:none}.button .ui-icon,.icon-action .ui-icon{width:17px;height:17px}
.transfer-list{min-width:0}.list-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;padding:0 2px}.list-heading h2{margin:0;color:var(--brand);font-size:17px}.list-heading span{color:var(--muted);font-size:13px}
.transfer-card{margin-bottom:12px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;box-shadow:0 4px 14px rgba(18,33,49,.04)}.transfer-card:last-child{margin-bottom:0}.transfer-card-head{display:grid;grid-template-columns:minmax(170px,1fr) auto auto;gap:18px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line);background:#f8fafb}.transfer-owner{min-width:0}.transfer-owner strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}.transfer-owner span{display:block;margin-top:3px;color:var(--muted);font-size:11px}.transfer-meta{display:flex;align-items:center;gap:22px;color:var(--muted);font-size:11px}.transfer-meta span{white-space:nowrap}.transfer-meta strong{display:block;margin-bottom:2px;color:var(--ink);font-size:13px}.transfer-tools{display:flex;align-items:center;justify-content:flex-end;gap:5px}.tool-button{display:grid;width:36px;height:36px;place-items:center;padding:0;border:1px solid var(--line);border-radius:6px;background:#fff;color:#315673;text-decoration:none;cursor:pointer;transition:.15s ease}.tool-button:hover{border-color:#9fb3c7;background:#eef5fa;color:var(--brand)}.tool-button.compact{width:32px;height:32px}.tool-button.compact .ui-icon{width:16px;height:16px}.tool-button.danger{border-color:#efcbc7;color:var(--danger)}.tool-button.danger:hover{border-color:#e6a8a1;background:#fff1ef}.tool-button-form{margin:0}.account-content{width:min(1080px,calc(100% - 32px));margin:0 auto;padding:30px 0}.account-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px}.account-head p{margin:6px 0 0;color:var(--muted)}
@media(max-width:1120px){.admin-grid,.users-layout,.user-detail-layout{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr 1fr}}
@media(max-width:860px){.transfer-card-head{grid-template-columns:1fr auto}.transfer-meta{grid-column:1/-1;grid-row:2}.transfer-tools{grid-column:2;grid-row:1}.file-row{grid-template-columns:48px minmax(0,1fr) auto}.file-tools{grid-column:2/-1}.file-size{grid-column:3;grid-row:1;text-align:right}}
@media(max-width:620px){.topbar{padding:0 14px}.topbar-logo{width:145px}.icon-action{padding:0 10px}.icon-action .label{display:none}.page{width:min(100% - 20px,720px);padding:18px 0}.upload-panel{padding:22px 16px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.submit-row{align-items:stretch;flex-direction:column-reverse}.submit-row .button{width:100%}.stats{grid-template-columns:1fr}.admin-heading,.account-head{align-items:flex-start;flex-direction:column}.file-row{grid-template-columns:44px minmax(0,1fr) auto;padding:11px 12px;gap:10px}.file-preview{width:42px;height:42px}.topbar-actions{gap:5px}.transfer-card-head{grid-template-columns:1fr;padding:13px 12px}.transfer-meta{grid-column:1;grid-row:auto;gap:13px;flex-wrap:wrap}.transfer-tools{grid-column:1;grid-row:auto;justify-content:flex-start}.action-grid{grid-template-columns:1fr}.list-heading{padding:0}.account-content,.admin-page{width:min(100% - 20px,1080px)}.admin-tabs{overflow-x:auto}.admin-tabs a{flex:none;padding:10px 12px}.filter-bar{align-items:flex-start;flex-wrap:wrap}.admin-user-row{grid-template-columns:minmax(0,1fr) 70px 20px}.admin-user-row>:nth-child(3){display:none}.settings-grid{grid-template-columns:1fr}.settings-wide{grid-column:auto}.mail-settings-form{padding:16px}.mail-settings-actions{align-items:stretch;flex-direction:column}.mail-settings-actions .button{width:100%}}
.tool-button:disabled{opacity:.38;cursor:not-allowed}.tool-button:disabled:hover{border-color:var(--line);background:#fff;color:#315673}