:root,[data-theme=light]{--bg-base: #f4f4f8;--bg-surface: #ffffff;--bg-raised: #eeeef5;--bg-hover: #e6e6f0;--bg-active: #dddded;--accent: #7c3aed;--accent-light: #8b5cf6;--accent-dim: #5b21b6;--accent-glow: rgba(124, 58, 237, .18);--cyan: #0891b2;--cyan-dim: rgba(8, 145, 178, .15);--border: rgba(124, 58, 237, .12);--border-bright: rgba(124, 58, 237, .35);--border-subtle: rgba(0, 0, 0, .07);--text-primary: #1a1535;--text-secondary: #4b4672;--text-muted: #9390b0;--success: #059669;--error: #dc2626;--warning: #d97706;--info: #0891b2;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 20px;--shadow-sm: 0 1px 3px rgba(0,0,0,.08);--shadow-md: 0 4px 16px rgba(0,0,0,.1);--shadow-lg: 0 8px 32px rgba(0,0,0,.12);--shadow-glow: 0 0 20px var(--accent-glow);--transition: .15s cubic-bezier(.4,0,.2,1);--sidebar-w: 240px}[data-theme=dark]{--bg-base: #07070d;--bg-surface: #0f0f1c;--bg-raised: #14142a;--bg-hover: #1a1a35;--bg-active: #1e1e40;--accent: #7c3aed;--accent-light: #8b5cf6;--accent-dim: #5b21b6;--accent-glow: rgba(124, 58, 237, .3);--cyan: #06b6d4;--cyan-dim: rgba(6, 182, 212, .2);--border: rgba(139, 92, 246, .15);--border-bright: rgba(139, 92, 246, .4);--border-subtle: rgba(255, 255, 255, .06);--text-primary: #f0eeff;--text-secondary: #a5a0c8;--text-muted: #5e5a78;--success: #10b981;--error: #ef4444;--warning: #f59e0b;--info: #06b6d4;--shadow-sm: 0 1px 3px rgba(0,0,0,.4);--shadow-md: 0 4px 16px rgba(0,0,0,.5);--shadow-lg: 0 8px 32px rgba(0,0,0,.6)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{transition:background-color .25s ease,color .25s 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#7c3aed1a}.auth-logo{display:flex;align-items:center;gap:10px;margin-bottom:32px;justify-content:center}.auth-logo-icon{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--cyan));display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:var(--shadow-glow)}.auth-logo-text{font-size:22px;font-weight:700;letter-spacing:-.03em;background:linear-gradient(90deg,var(--accent-light),var(--cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.auth-title{font-size:20px;font-weight:700;margin-bottom:8px;text-align:center}.auth-sub{color:var(--text-secondary);text-align:center;margin-bottom:28px;font-size:14px}.auth-footer{text-align:center;margin-top:20px;color:var(--text-muted);font-size:13px}.auth-footer a{color:var(--accent-light);text-decoration:none;font-weight:500}.auth-footer a:hover{text-decoration:underline}.form-group{margin-bottom:16px}.form-label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.form-input{width:100%;padding:10px 14px;background:var(--bg-raised);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:14px;font-family:inherit;outline:none;transition:border-color var(--transition),box-shadow var(--transition)}.form-input:focus{border-color:var(--accent-light);box-shadow:0 0 0 3px #7c3aed33}.form-input::placeholder{color:var(--text-muted)}.form-error{color:var(--error);font-size:12px;margin-top:4px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border:1px solid transparent;border-radius:var(--radius-md);font-size:14px;font-weight:500;font-family:inherit;cursor:pointer;text-decoration:none;transition:all 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var(--transition);font-size:15px}.view-btn.active{background:var(--bg-raised);color:var(--accent-light)}.file-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}.file-grid.list-view{grid-template-columns:1fr;gap:4px}.file-card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);overflow:hidden;cursor:pointer;transition:all var(--transition);position:relative;-webkit-user-select:none;user-select:none}.file-card:hover{border-color:var(--border);box-shadow:var(--shadow-md)}.file-card.selected{border-color:var(--accent-light);box-shadow:0 0 0 2px var(--accent-glow);background:#7c3aed14}.file-card.dragging{opacity:.5}.file-card.drop-target{border-color:var(--accent);background:#7c3aed1a}.file-thumb{height:110px;display:flex;align-items:center;justify-content:center;background:var(--bg-raised);position:relative;overflow:hidden}.file-thumb 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