.grade-converter-ui{--color-primary: #6366f1;--color-primary-dark: #4f46e5;--color-success: #10b981;--color-warning: #f59e0b;--color-error: #ef4444;--color-bg-card: #fff;--color-bg-sub: #f8fafc;--color-border: #e2e8f0;--color-text: #1e293b;--color-text-muted: #64748b;--divider: 1px solid var(--color-border)}.theme-dark .grade-converter-ui{--color-bg-card: #1e293b;--color-bg-sub: #0f172a;--color-border: #334155;--color-text: #f1f5f9;--color-text-muted: #94a3b8}.grade-converter-container{max-width:800px;margin:0 auto;padding:1.5rem}.main-converter-card{background:var(--color-bg-card);border:2px solid var(--color-border);border-radius:1.5rem;display:flex;flex-direction:column}.section-header{padding:1.25rem 1.5rem;background:var(--color-bg-sub);border-bottom:var(--divider);display:flex;justify-content:space-between;align-items:center;gap:1rem}.header-main{display:flex;align-items:center;gap:.75rem}.section-title{font-size:.9rem;font-weight:900;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text);margin:0}.mode-toggle{display:flex;background:var(--color-bg-card);border:1px solid var(--color-border);padding:.25rem;border-radius:.75rem;gap:.25rem}.toggle-btn{display:flex;align-items:center;gap:.5rem;padding:.5rem .75rem;border-radius:.5rem;border:none;background:transparent;color:var(--color-text-muted);font-size:.75rem;font-weight:700;cursor:pointer;transition:all .2s}.toggle-btn.active{background:var(--color-text);color:var(--color-bg-card)}.converter-body{padding:1.5rem;border-bottom:var(--divider)}.selection-section{margin-bottom:1.5rem;padding-bottom:1.5rem;border-bottom:1px dashed var(--color-border)}.input-pane{display:none}.input-pane.active{display:block}.field-label{display:block;font-size:.7rem;font-weight:800;margin-bottom:.5rem;color:var(--color-text-muted);text-transform:uppercase}.field-control{width:100%;padding:.75rem 2.5rem .75rem 1rem;border-radius:.75rem;border:1px solid var(--color-border);background:var(--color-bg-sub);color:var(--color-text);font-size:1rem;font-weight:600;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 1rem center;background-size:1.25rem}.bulk-textarea{min-height:120px;font-size:.9rem}.bulk-stats{margin-top:1rem;display:flex;flex-direction:column;gap:.75rem;padding:1rem;background:var(--color-bg-sub);border:1px solid var(--color-border);border-radius:.75rem}.stats-main{display:flex;gap:1.5rem}.ignored-warning{display:flex;align-items:center;gap:.5rem;padding:.5rem .75rem;background:#fef2f2;color:var(--color-error);border-radius:.5rem;font-size:.7rem;font-weight:700}.stat-item{display:flex;flex-direction:column}.stat-label{font-size:.65rem;font-weight:700;color:var(--color-text-muted);text-transform:uppercase}.stat-value{font-size:1.1rem;font-weight:900;color:var(--color-primary)}.label-with-help{display:flex;align-items:center;gap:.5rem;margin-bottom:.5rem}.help-tooltip{color:var(--color-text-muted);cursor:help;display:flex;align-items:center;position:relative}.tooltip-content{position:absolute;bottom:calc(100% + 10px);left:0;transform:translateY(5px) scale(.95);background:#1e293b;color:var(--color-bg-card);padding:.75rem 1rem;border-radius:.75rem;font-size:.75rem;font-weight:500;width:240px;line-height:1.4;pointer-events:none;opacity:0;transition:all .2s cubic-bezier(.4,0,.2,1);z-index:9999;box-shadow:0 10px 15px -3px #0003}.help-tooltip:hover .tooltip-content{opacity:1;transform:translateY(0) scale(1)}.tooltip-content:after{content:"";position:absolute;top:100%;left:14px;border:6px solid transparent;border-top-color:#1e293b}.results-pane{padding:1.5rem}.pane-title{font-size:.75rem;font-weight:800;color:var(--color-text-muted);text-transform:uppercase;margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}.results-list{display:flex;flex-direction:column;gap:.75rem}.result-row{display:grid;grid-template-columns:140px 1fr 100px;align-items:center;padding:1rem;background:var(--color-bg-sub);border:1px solid var(--color-border);border-radius:1rem;gap:1.5rem}.target-info{font-weight:800}.progress-strip{height:10px;background:var(--color-border);border-radius:5px;position:relative;overflow:hidden}.progress-fill{height:100%;transition:width .5s ease}.pass-mark{position:absolute;top:0;bottom:0;width:2px;background:var(--color-text);opacity:.2}.grade-out{text-align:right;display:flex;flex-direction:column;cursor:copy}.grade-out .val{font-size:1.5rem;font-weight:900}.grade-out .lbl{font-size:.6rem;font-weight:700;color:var(--color-text-muted);text-transform:uppercase}.card-footer{padding:1.5rem;background:var(--color-bg-sub);border-top:var(--divider);display:flex;justify-content:center}.btn-download{display:flex;align-items:center;gap:.5rem;padding:.85rem 2rem;background:var(--color-primary);color:var(--color-bg-card);border:none;border-radius:1rem;font-weight:900;cursor:pointer}.empty-state{text-align:center;padding:3rem;color:var(--color-text-muted);font-weight:600}