:root{color-scheme:dark;--bg:#0b1020;--panel:#121a2f;--panel-border:#24304d;--text:#e8edf8;--muted:#93a0bd;--accent:#5b8cff;--accent-soft:rgba(91,140,255,0.12);--danger:#ff6b7a;--success:#3dd68c}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:radial-gradient(circle at top,#152040 0,var(--bg) 45%);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}.app-shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{border-right:1px solid var(--panel-border);background:rgba(8,12,24,.85);padding:24px 16px}.sidebar-brand{font-weight:700;letter-spacing:.04em;margin-bottom:24px}.sidebar-nav{display:grid;grid-gap:8px;gap:8px}.sidebar-link{padding:10px 12px;border-radius:10px;color:var(--muted)}.sidebar-link.active,.sidebar-link:hover{background:var(--accent-soft);color:var(--text)}.main-content{padding:28px}.page-header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px}.page-title{margin:0;font-size:1.5rem}.page-subtitle{margin:6px 0 0;color:var(--muted)}.card{background:rgba(18,26,47,.92);border:1px solid var(--panel-border);border-radius:16px;padding:20px}.login-page{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:min(420px,100%)}.form-field{display:grid;grid-gap:8px;gap:8px;margin-bottom:16px}.form-field label{color:var(--muted);font-size:.9rem}.form-field input{width:100%;border:1px solid var(--panel-border);background:#0d1428;color:var(--text);border-radius:10px;padding:12px 14px}.btn{border:0;border-radius:10px;padding:11px 16px;cursor:pointer;font-weight:600}.btn-primary{background:var(--accent);color:white}.btn-secondary{background:#1b2642;color:var(--text);border:1px solid var(--panel-border)}.btn:disabled{opacity:.6;cursor:not-allowed}.error-banner{background:rgba(255,107,122,.12);border:1px solid rgba(255,107,122,.35);color:#ffb3bc;border-radius:10px}.error-banner,.success-banner{padding:10px 12px;margin-bottom:16px}.success-banner{background:rgba(61,214,140,.12);border:1px solid rgba(61,214,140,.35);color:#a8f5cf;border-radius:10px}.symbol-board{display:grid;grid-template-columns:1fr 1fr;grid-gap:20px;gap:20px}.symbol-column{min-height:520px;display:flex;flex-direction:column;gap:12px}.symbol-column-header{display:flex;align-items:center;justify-content:space-between;gap:12px}.symbol-column-title{margin:0;font-size:1.05rem}.symbol-count{color:var(--muted);font-size:.85rem}.symbol-list{flex:1 1;overflow:auto;display:grid;grid-gap:8px;gap:8px;align-content:start;min-height:420px;padding:12px;border-radius:14px;border:1px dashed var(--panel-border);background:rgba(9,14,28,.65)}.symbol-list.drop-active{border-color:var(--accent);background:var(--accent-soft)}.symbol-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border-radius:12px;border:1px solid var(--panel-border);background:#10182d;cursor:-webkit-grab;cursor:grab}.symbol-item.dragging{opacity:.5}.symbol-item-main{min-width:0}.symbol-item-name{font-weight:600}.symbol-item-desc{color:var(--muted);font-size:.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.toolbar{display:flex;gap:10px;align-items:center}.search-input{min-width:240px;border:1px solid var(--panel-border);background:#0d1428;color:var(--text);border-radius:10px;padding:10px 12px}@media (max-width:960px){.app-shell,.symbol-board{grid-template-columns:1fr}}