:root{
  --bg:#0d1117;--bg2:#161b22;--bg3:#21262d;--bg4:#2d333b;
  --border:#30363d;
  --blue:#2f81f7;--blue-h:#58a6ff;--blue-dim:#1f3a5f;--blue-dk:#1a4a8a;
  --txt:#e6edf3;--txt2:#8b949e;--txt3:#484f58;
  --green:#3fb950;--green-dim:#1a3a1e;
  --red:#f85149;--red-dim:#3a1a1a;
  --yellow:#d29922;--yellow-dim:#2e2200;
  --purple:#bc8cff;
  --r:8px;--r2:12px;--r3:16px;
  --shadow:0 8px 32px rgba(0,0,0,.5);
  --shadow-sm:0 2px 8px rgba(0,0,0,.3);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--txt);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-size:14px;line-height:1.5;min-height:100vh}
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.hidden{display:none!important}

/* ── BUTTONS ─────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:9px 16px;border-radius:var(--r);border:1px solid transparent;font-size:13px;font-weight:600;cursor:pointer;white-space:nowrap;text-decoration:none;background:none;color:inherit;line-height:1;transition:background .15s,border-color .15s,box-shadow .15s,transform .1s;position:relative}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn:not(:disabled):active{transform:scale(.97)}
.btn-primary{background:var(--blue);color:#fff;border-color:var(--blue)}
.btn-primary:not(:disabled):hover{background:var(--blue-h);border-color:var(--blue-h);box-shadow:0 4px 14px rgba(47,129,247,.4)}
.btn-secondary{background:var(--bg3);color:var(--txt);border-color:var(--border)}
.btn-secondary:not(:disabled):hover{background:var(--bg4);border-color:var(--txt3)}
.btn-success{background:var(--green-dim);color:var(--green);border-color:rgba(63,185,80,.2)}
.btn-success:not(:disabled):hover{background:#1f5730;box-shadow:0 4px 14px rgba(63,185,80,.2)}
.btn-danger{background:var(--red-dim);color:var(--red);border-color:rgba(248,81,73,.2)}
.btn-danger:not(:disabled):hover{background:#4a2020;box-shadow:0 4px 14px rgba(248,81,73,.2)}
.btn-warning{background:var(--yellow-dim);color:var(--yellow);border-color:rgba(210,153,34,.2)}
.btn-warning:not(:disabled):hover{background:#3a2b00;box-shadow:0 4px 14px rgba(210,153,34,.2)}
.btn-ghost{background:transparent;color:var(--txt2);border-color:transparent}
.btn-ghost:not(:disabled):hover{background:var(--bg3);color:var(--txt)}
.btn.active{background:var(--blue-dim);color:var(--blue-h);border-color:var(--blue-dk)}
.btn-sm{padding:6px 12px;font-size:12px}
.btn-xs{padding:4px 9px;font-size:11px}
.btn-full{width:100%;justify-content:center}
.btn-icon{padding:7px;width:34px;height:34px}

/* ── FORM ──────────────────────────────── */
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:12px;color:var(--txt2);margin-bottom:6px;font-weight:500}
.form-input{width:100%;padding:10px 13px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--r);color:var(--txt);font-size:13px;outline:none;transition:border-color .2s,box-shadow .2s}
.form-input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(47,129,247,.12)}
.form-input::placeholder{color:var(--txt3)}
.inline-input{background:transparent;border:1px solid transparent;border-radius:5px;color:var(--txt);font-size:13px;padding:3px 7px;outline:none;width:100%;transition:border-color .15s,background .15s}
.inline-input:hover,.inline-input:focus{border-color:var(--border);background:var(--bg3)}

/* ── AUTH ──────────────────────────────── */
#auth-section{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}
.auth-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r3);padding:44px;width:100%;max-width:420px;box-shadow:var(--shadow)}
.auth-logo{text-align:center;margin-bottom:28px}
.auth-logo i{font-size:44px;color:var(--blue);filter:drop-shadow(0 0 14px rgba(47,129,247,.5))}
.auth-logo h1{font-size:24px;font-weight:700;margin-top:12px}
.auth-logo p{color:var(--txt2);font-size:13px;margin-top:5px}
.auth-btns{display:flex;gap:10px;margin-top:20px}
#auth-msg{font-size:12px;color:var(--red);margin-top:10px;min-height:18px}

/* ── TOPBAR ──────────────────────────── */
.topbar{position:sticky;top:0;z-index:100;background:rgba(22,27,34,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);height:56px;padding:0 22px;display:flex;align-items:center;justify-content:space-between}
.topbar-brand{display:flex;align-items:center;gap:10px}
.topbar-brand i{color:var(--blue);font-size:20px}
.topbar-brand h1{font-size:17px;font-weight:700;letter-spacing:-.3px}
.topbar-right{display:flex;align-items:center;gap:8px}
.api-key-wrap{display:flex;align-items:center;gap:5px}
.api-key-badge{display:flex;align-items:center;gap:7px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--r);padding:6px 12px;font-family:monospace;font-size:11px;color:var(--yellow);cursor:pointer;max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;transition:border-color .15s,background .15s}
.api-key-badge:hover{border-color:var(--yellow);background:var(--bg4)}

/* ── LAYOUT ──────────────────────────── */
.app-layout{display:grid;grid-template-columns:240px 1fr;min-height:calc(100vh - 56px)}

/* ── SIDEBAR ─────────────────────────── */
.sidebar{background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow-y:auto;max-height:calc(100vh - 56px)}
.sidebar-nav{padding:12px 10px 8px;display:flex;flex-direction:column;gap:2px}
.nav-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--r);cursor:pointer;font-size:13px;font-weight:500;color:var(--txt2);border:1px solid transparent;transition:background .12s,color .12s}
.nav-item:hover{background:var(--bg3);color:var(--txt)}
.nav-item.active{background:var(--blue-dim);color:var(--blue-h);border-color:var(--blue-dk)}
.nav-item i{font-size:14px;width:16px;text-align:center}
.sidebar-divider{height:1px;background:var(--border);margin:8px 12px}
.sidebar-section{padding:8px 10px;flex:1;overflow-y:auto}
.sidebar-section-label{font-size:10px;font-weight:700;color:var(--txt3);text-transform:uppercase;letter-spacing:1px;padding:6px 8px 8px;display:flex;align-items:center;gap:6px}
.sidebar-add{display:flex;gap:6px;margin-bottom:8px}
.sidebar-add input{flex:1;padding:7px 10px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--r);color:var(--txt);font-size:12px;outline:none;transition:border-color .15s}
.sidebar-add input:focus{border-color:var(--blue)}
.sidebar-add input::placeholder{color:var(--txt3)}
#collection-list{list-style:none;display:flex;flex-direction:column;gap:2px}
.col-item{display:flex;align-items:center;justify-content:space-between;padding:7px 10px;border-radius:var(--r);cursor:pointer;border:1px solid transparent;transition:background .12s}
.col-item:hover{background:var(--bg3)}
.col-item.active{background:var(--blue-dim);border-color:var(--blue-dk)}
.col-item-l{display:flex;align-items:center;gap:8px;font-size:13px;min-width:0}
.col-item-l i{color:var(--blue);font-size:11px;flex-shrink:0}
.col-item-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.col-badge{font-size:10px;font-weight:600;background:var(--bg3);padding:2px 7px;border-radius:20px;color:var(--txt2);flex-shrink:0}
.col-item.active .col-badge{background:var(--blue-dk);color:#fff}
.col-empty{padding:10px 8px;font-size:12px;color:var(--txt3);display:flex;align-items:center;gap:7px}

/* ── CONTENT ─────────────────────────── */
.content-area{overflow-y:auto;height:calc(100vh - 56px);display:flex;flex-direction:column}
.page{display:none;flex:1;padding:22px;flex-direction:column;gap:20px}
.page.active{display:flex}

/* ── PANEL ───────────────────────────── */
.panel{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r3);overflow:hidden}
.panel-header{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--border);gap:12px;flex-wrap:wrap;min-height:54px}
.panel-title{font-size:14px;font-weight:600;display:flex;align-items:center;gap:9px}
.panel-title>i{color:var(--blue)}
.panel-actions{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.panel-body{padding:18px}

/* ── TABLE ───────────────────────────── */
.table-wrap{overflow-x:auto}
.data-table{width:100%;border-collapse:collapse;font-size:13px}
.data-table th{padding:10px 14px;text-align:left;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--txt2);background:var(--bg);border-bottom:1px solid var(--border);white-space:nowrap}
.data-table td{padding:10px 14px;border-bottom:1px solid var(--bg3);vertical-align:middle}
.data-table tr:last-child td{border-bottom:none}
.data-table tbody tr{transition:background .1s}
.data-table tbody tr:hover td{background:rgba(47,129,247,.04)}
.col-num{width:40px;color:var(--txt3);font-size:11px}
.col-meta{color:var(--txt3);font-size:11px;white-space:nowrap}
.col-act{width:90px}
.mono-sm{font-family:monospace;font-size:11px}
.ts{font-size:12px;color:var(--txt2)}
.cell-val{display:inline-block;max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:middle}
.row-actions{display:flex;justify-content:flex-end;gap:5px;opacity:0;transition:opacity .15s}
.data-table tbody tr:hover .row-actions{opacity:1}
.badge{display:inline-block;padding:2px 9px;border-radius:20px;font-size:11px;font-weight:600}
.badge-blue{background:var(--blue-dim);color:var(--blue-h)}

/* ── DRIVE / FILE MANAGER ───────────── */
.drive-toolbar{display:flex;align-items:center;gap:8px;padding:12px 20px;border-bottom:1px solid var(--border);flex-wrap:wrap}
.breadcrumb{display:flex;align-items:center;gap:4px;font-size:13px;flex:1;min-width:0;overflow:hidden}
.breadcrumb-item{color:var(--txt2);cursor:pointer;white-space:nowrap;transition:color .12s}
.breadcrumb-item:hover{color:var(--txt)}
.breadcrumb-item.current{color:var(--txt);font-weight:600;cursor:default}
.breadcrumb-sep{color:var(--txt3);font-size:11px}
.drive-actions{display:flex;align-items:center;gap:6px}
.view-toggle{display:flex;gap:2px;background:var(--bg3);padding:3px;border-radius:var(--r);border:1px solid var(--border)}
.view-toggle .btn{padding:5px 9px;border-radius:5px;font-size:12px}
.view-toggle .btn.active{background:var(--blue-dim);color:var(--blue-h)}
.drive-content{padding:14px 20px;flex:1;overflow-y:auto}

/* Drop overlay */
.drop-overlay{display:none;position:absolute;inset:0;background:rgba(47,129,247,.15);border:3px dashed var(--blue);border-radius:var(--r2);z-index:50;align-items:center;justify-content:center;font-size:18px;font-weight:600;color:var(--blue);gap:12px;pointer-events:none}
.drop-overlay.active{display:flex}
.drive-panel{position:relative;flex:1;display:flex;flex-direction:column}
/* Item drag-drop hedef */
.drop-target{background:var(--blue-dim)!important;outline:2px dashed var(--blue);outline-offset:-2px}

/* LIST VIEW */
.file-list-table{width:100%;border-collapse:collapse;font-size:13px}
.file-list-table th{padding:8px 12px;text-align:left;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.4px;color:var(--txt2);border-bottom:1px solid var(--border);white-space:nowrap;background:var(--bg)}
.file-list-table td{padding:9px 12px;border-bottom:1px solid var(--bg3);vertical-align:middle}
.file-list-table tr:last-child td{border-bottom:none}
.file-list-table tbody tr{cursor:pointer;transition:background .1s}
.file-list-table tbody tr:hover td{background:rgba(47,129,247,.05)}
.file-list-table tbody tr.selected td{background:var(--blue-dim)}
.file-row-name{display:flex;align-items:center;gap:10px}
.file-row-name i{font-size:16px;flex-shrink:0}
.file-row-actions{display:flex;justify-content:flex-end;gap:4px;opacity:0;transition:opacity .15s}
.file-list-table tbody tr:hover .file-row-actions{opacity:1}

/* GRID VIEW */
.file-grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(148px,1fr))}
.grid-card{background:var(--bg3);border:1px solid var(--border);border-radius:var(--r2);overflow:hidden;cursor:pointer;transition:border-color .15s,transform .15s,box-shadow .15s;display:flex;flex-direction:column}
.grid-card:hover{border-color:var(--blue);transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.4)}
.grid-card.selected{border-color:var(--blue);background:var(--blue-dim)}
.grid-thumb-wrap{height:110px;display:flex;align-items:center;justify-content:center;background:var(--bg);overflow:hidden}
.grid-thumb-wrap img,.grid-thumb-wrap video{width:100%;height:100%;object-fit:cover}
.grid-icon{font-size:36px}
.grid-info{padding:8px 10px 6px;flex:1}
.grid-name{font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:block}
.grid-meta{font-size:11px;color:var(--txt2);margin-top:2px}
.grid-card-actions{display:flex;gap:4px;padding:0 8px 8px;opacity:0;transition:opacity .15s}
.grid-card:hover .grid-card-actions{opacity:1}

/* NEW BUTTON DROPDOWN */
.new-btn-wrap{position:relative}
.new-dropdown{display:none;position:absolute;top:calc(100% + 6px);left:0;background:var(--bg2);border:1px solid var(--border);border-radius:var(--r2);box-shadow:var(--shadow);min-width:180px;z-index:200;padding:4px}
.new-dropdown.open{display:block}
.new-dropdown-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--r);cursor:pointer;font-size:13px;color:var(--txt);transition:background .12s}
.new-dropdown-item:hover{background:var(--bg3)}
.new-dropdown-item i{width:16px;text-align:center;color:var(--txt2)}

/* Upload progress overlay */
.upload-progress-bar{height:3px;background:var(--blue);border-radius:2px;transition:width .3s;width:0}
.upload-progress-wrap{background:var(--bg3);border-radius:2px;overflow:hidden;margin-top:6px}

/* STORAGE PAGE */
.storage-page{max-width:600px;margin:0 auto;width:100%}
.storage-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r3);padding:28px}
.storage-card h3{font-size:16px;font-weight:700;margin-bottom:20px;display:flex;align-items:center;gap:9px}
.storage-card h3 i{color:var(--blue)}
.storage-bar-wrap{background:var(--bg3);border-radius:4px;height:10px;overflow:hidden;margin:12px 0 8px}
.storage-bar{height:100%;border-radius:4px;background:linear-gradient(90deg,var(--blue),var(--blue-h));transition:width .6s ease}
.storage-bar.warn{background:linear-gradient(90deg,var(--yellow),#f0a500)}
.storage-bar.full{background:linear-gradient(90deg,var(--red),#ff6b6b)}
.storage-stats{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px;margin-top:18px}
.storage-stat{background:var(--bg3);border-radius:var(--r2);padding:14px;text-align:center}
.storage-stat .val{font-size:20px;font-weight:700;color:var(--blue)}
.storage-stat .lbl{font-size:11px;color:var(--txt2);margin-top:4px}

/* EMPTY STATE */
.empty-state{text-align:center;padding:52px 20px;color:var(--txt3)}
.empty-state i{font-size:40px;margin-bottom:14px;display:block}
.empty-state p{font-size:13px}

/* MODAL */
.modal-overlay{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;padding:20px;background:rgba(0,0,0,0);transition:background .22s ease;pointer-events:none}
.modal-overlay.open{background:rgba(0,0,0,.72);pointer-events:all}
.modal-overlay.closing{background:rgba(0,0,0,0);pointer-events:none}
.modal-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r3);width:100%;max-width:520px;max-height:92vh;display:flex;flex-direction:column;box-shadow:var(--shadow);opacity:0;transform:translateY(22px) scale(.96);transition:opacity .22s ease,transform .26s cubic-bezier(.34,1.5,.64,1);pointer-events:none}
.modal-overlay.open .modal-card{opacity:1;transform:translateY(0) scale(1);pointer-events:all}
.modal-overlay.closing .modal-card{opacity:0;transform:translateY(22px) scale(.96)}
.modal-card.modal-lg{max-width:860px}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border);flex-shrink:0}
.modal-header h3{font-size:15px;font-weight:600;display:flex;align-items:center;gap:9px}
.modal-close{background:none;border:none;color:var(--txt2);cursor:pointer;font-size:17px;padding:5px 7px;border-radius:6px;transition:background .12s,color .12s}
.modal-close:hover{background:var(--bg3);color:var(--txt)}
.modal-body{padding:20px;overflow-y:auto;flex:1}
.modal-footer{padding:14px 20px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:9px;flex-shrink:0}

/* Preview modal */
.preview-wrap{display:flex;align-items:center;justify-content:center;min-height:300px;background:var(--bg);border-radius:var(--r2);overflow:hidden}
.preview-wrap img{max-width:100%;max-height:70vh;border-radius:4px}
.preview-wrap video{max-width:100%;max-height:70vh;border-radius:4px}
.preview-wrap audio{width:100%}
.preview-icon{font-size:72px;padding:40px}
.preview-meta{display:flex;align-items:center;justify-content:space-between;padding:12px 4px 0;gap:12px;flex-wrap:wrap}
.preview-name-edit{display:flex;align-items:center;gap:8px;flex:1}
.preview-name-edit input{flex:1;padding:6px 10px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--r);color:var(--txt);font-size:13px;outline:none;transition:border-color .2s}
.preview-name-edit input:focus{border-color:var(--blue)}

/* JSON EDITOR */
.json-editor{width:100%;padding:13px;background:var(--bg);border:1px solid var(--border);border-radius:var(--r2);color:#7ee787;font-family:'Consolas','SF Mono',monospace;font-size:13px;resize:vertical;outline:none;line-height:1.75;transition:border-color .2s,box-shadow .2s}
.json-editor:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(47,129,247,.1)}
.hint-text{font-size:12px;color:var(--txt3);margin-bottom:9px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.err-text{font-size:12px;color:var(--red);margin-top:7px;min-height:17px}
kbd{background:var(--bg3);padding:1px 5px;border-radius:4px;font-size:11px;border:1px solid var(--border)}

/* CONFIRM */
.confirm-body{text-align:center;padding:12px 0 6px}
.confirm-body>i{font-size:40px;margin-bottom:14px;display:block}
.confirm-body p{font-size:14px}
.confirm-detail{font-size:12px;color:var(--txt2);margin-top:7px;line-height:1.5}

/* TOAST */
#toast{position:fixed;bottom:24px;right:24px;z-index:999;background:var(--bg3);border:1px solid var(--border);border-radius:var(--r2);padding:12px 18px;font-size:13px;display:flex;align-items:center;gap:9px;min-width:210px;max-width:360px;box-shadow:var(--shadow-sm);pointer-events:none;opacity:0;transform:translateY(60px);transition:opacity .25s ease,transform .3s cubic-bezier(.34,1.5,.64,1)}
#toast.show{opacity:1;transform:translateY(0)}
#toast.t-success i{color:var(--green)}
#toast.t-error i{color:var(--red)}
#toast.t-info i{color:var(--blue)}
#toast.t-warning i{color:var(--yellow)}

@media(max-width:768px){
  .app-layout{grid-template-columns:1fr}
  .sidebar{max-height:none;border-right:none;border-bottom:1px solid var(--border)}
  .topbar-brand h1{display:none}
}