@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap";:root{--bg-primary:#111;--bg-secondary:#1a1a1a;--bg-tertiary:#222;--bg-card:#1a1a1a;--bg-card-hover:#222;--border-color:#2a2a2a;--border-subtle:#222;--text-primary:#f5f5f5;--text-secondary:#a3a3a3;--text-muted:#737373;--primary:#f59e0b;--primary-hover:#d97706;--primary-light:#f59e0b1f;--primary-border:#f59e0b40;--speaking-color:#f97316;--speaking-bg:#f973161a;--writing-color:#a78bfa;--writing-bg:#a78bfa1a;--reading-color:#38bdf8;--reading-bg:#38bdf81a;--listening-color:#60a5fa;--listening-bg:#60a5fa1a;--success:#22c55e;--success-bg:#22c55e1a;--warning:#eab308;--warning-bg:#eab3081a;--danger:#ef4444;--danger-bg:#ef44441a;--info:#3b82f6;--info-bg:#3b82f61a;--shadow-sm:0 1px 2px #00000026;--shadow-md:0 2px 8px #0000001f;--shadow-lg:0 4px 16px #00000026;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-full:9999px;--font-base:16px;--font-family:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;--transition:.15s ease}[data-theme=light]{--bg-primary:#fafafa;--bg-secondary:#fff;--bg-tertiary:#f5f5f5;--bg-card:#fff;--bg-card-hover:#fafafa;--border-color:#e5e5e5;--border-subtle:#f0f0f0;--text-primary:#171717;--text-secondary:#525252;--text-muted:#a3a3a3;--primary-light:#f59e0b14;--primary-border:#f59e0b33;--speaking-bg:#f973160f;--writing-bg:#a78bfa0f;--reading-bg:#38bdf80f;--listening-bg:#60a5fa0f;--success-bg:#22c55e0f;--warning-bg:#eab3080f;--danger-bg:#ef44440f;--info-bg:#3b82f60f;--shadow-sm:0 1px 2px #0000000a;--shadow-md:0 2px 8px #0000000f;--shadow-lg:0 4px 16px #00000014}[data-high-contrast=true]{--bg-primary:#000;--bg-secondary:#0a0a0a;--bg-tertiary:#171717;--bg-card:#0a0a0a;--bg-card-hover:#171717;--border-color:#525252;--border-subtle:#404040;--text-primary:#fff;--text-secondary:#e5e5e5;--text-muted:#a3a3a3;--primary:#fbbf24;--success:#4ade80;--danger:#f87171;--warning:#facc15}[data-font-size=small]{--font-base:14px}[data-font-size=medium]{--font-base:16px}[data-font-size=large]{--font-base:18px}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.001ms!important;animation-duration:.001ms!important}}[data-reduced-motion=true] *,[data-reduced-motion=true] :before,[data-reduced-motion=true] :after{transition-duration:.001ms!important;animation-duration:.001ms!important}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body{font-family:var(--font-family);font-size:var(--font-base);background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;line-height:1.6}.skip-link{background:var(--primary);color:#000;z-index:9999;border-radius:var(--radius-md);transition:top var(--transition);padding:.6rem 1rem;font-weight:600;text-decoration:none;position:absolute;top:-60px;left:1rem}.skip-link:focus{outline:2px solid var(--primary);outline-offset:2px;top:1rem}:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.app-container{flex-direction:column;min-height:100vh;display:flex}.main-content{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:2rem 1.5rem 3rem}@media (width<=640px){.main-content{padding:1.25rem 1rem 2rem}}.header{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);z-index:50;position:sticky;top:0}.nav-container{justify-content:space-between;align-items:center;gap:1rem;max-width:1200px;height:56px;margin:0 auto;padding:0 1.5rem;display:flex}.brand{color:var(--text-primary);cursor:pointer;align-items:center;gap:.6rem;font-size:1rem;font-weight:700;text-decoration:none;display:flex}.brand-badge{background-color:var(--primary);background:var(--primary);color:#111;border-radius:var(--radius-sm);letter-spacing:.5px;text-transform:uppercase;justify-content:center;align-items:center;padding:.2rem .55rem;font-size:.7rem;font-weight:800;line-height:1.2;display:inline-flex}.nav-links{align-items:center;gap:.25rem;list-style:none;display:flex}.nav-btn{color:var(--text-secondary);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition);background:0 0;border:none;align-items:center;gap:.35rem;padding:.45rem .75rem;font-family:inherit;font-size:.85rem;font-weight:500;display:flex}.nav-btn:hover{color:var(--text-primary);background:var(--bg-tertiary)}.nav-btn.active{color:var(--primary);background:var(--primary-light);font-weight:600}.nav-actions{align-items:center;gap:.5rem;display:flex}.badge-offline{background:var(--success-bg);color:var(--success);border-radius:var(--radius-full);border:1px solid #22c55e33;align-items:center;gap:.3rem;padding:.2rem .5rem;font-size:.7rem;font-weight:600;display:inline-flex}.badge-offline:before{content:"";background-color:var(--success);border-radius:50%;width:5px;height:5px}.icon-btn{background:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-secondary);border-radius:var(--radius-md);cursor:pointer;width:34px;height:34px;transition:all var(--transition);justify-content:center;align-items:center;font-family:inherit;font-size:.85rem;display:inline-flex}.icon-btn:hover{color:var(--primary);border-color:var(--primary-border);background:var(--primary-light)}.btn{border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition);border:none;justify-content:center;align-items:center;gap:.4rem;padding:.55rem 1.1rem;font-family:inherit;font-size:.875rem;font-weight:600;line-height:1.4;text-decoration:none;display:inline-flex}.btn-primary{background:var(--primary);color:#000}.btn-primary:hover{background:var(--primary-hover)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{border-color:var(--primary-border);background:var(--primary-light)}.btn-outline{color:var(--text-primary);border:1px solid var(--border-color);background:0 0}.btn-outline:hover{border-color:var(--primary-border);color:var(--primary)}.btn-sm{padding:.35rem .7rem;font-size:.8rem}.btn-lg{padding:.7rem 1.5rem;font-size:.95rem}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#dc2626}.btn-success{background:var(--success);color:#fff}.btn-success:hover{background:#16a34a}.btn:disabled{opacity:.4;cursor:not-allowed}.card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);transition:border-color var(--transition);padding:1.5rem}.card:hover{border-color:var(--primary-border)}.card-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.75rem;margin-bottom:1rem;display:flex}.card-title{color:var(--text-primary);align-items:center;gap:.4rem;font-size:1rem;font-weight:700;display:flex}.grid{gap:1rem;display:grid}.grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}@media (width<=900px){.grid-cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-cols-3{grid-template-columns:1fr}}@media (width<=640px){.grid-cols-2,.grid-cols-4{grid-template-columns:1fr}.nav-container{flex-wrap:wrap;height:auto;padding:.75rem 1rem}.nav-links{display:none}}.badge{border-radius:var(--radius-full);text-transform:capitalize;align-items:center;gap:.3rem;padding:.2rem .55rem;font-size:.75rem;font-weight:600;display:inline-flex}.badge-speaking{background:var(--speaking-bg);color:var(--speaking-color)}.badge-writing{background:var(--writing-bg);color:var(--writing-color)}.badge-reading{background:var(--reading-bg);color:var(--reading-color)}.badge-listening{background:var(--listening-bg);color:var(--listening-color)}.badge-easy{background:var(--success-bg);color:var(--success)}.badge-medium{background:var(--warning-bg);color:var(--warning)}.badge-hard{background:var(--danger-bg);color:var(--danger)}.test-runner{flex-direction:column;gap:1.25rem;display:flex}.test-header{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;padding:1rem 1.25rem;display:flex}.test-progress-bar{background:var(--bg-tertiary);border-radius:var(--radius-full);width:100%;height:4px;margin-top:.75rem;overflow:hidden}.test-progress-fill{background:var(--primary);height:100%;transition:width .3s}.timer-box{font-family:var(--font-mono);border-radius:var(--radius-md);background:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-primary);align-items:center;gap:.4rem;padding:.35rem .75rem;font-size:1.15rem;font-weight:700;display:flex}.timer-warning{color:var(--danger);border-color:var(--danger);background:var(--danger-bg)}.question-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);flex-direction:column;gap:1.25rem;padding:1.75rem;display:flex}.question-prompt{color:var(--text-primary);background:var(--bg-tertiary);border-radius:var(--radius-md);border-left:3px solid var(--primary);padding:1rem 1.25rem;font-size:1.05rem;line-height:1.7}.audio-control-panel{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;padding:.85rem 1rem;display:flex}.waveform-sim{align-items:center;gap:3px;height:28px;display:flex}.waveform-bar{background:var(--primary);border-radius:2px;width:3px;animation:1.2s ease-in-out infinite alternate soundwave}@keyframes soundwave{0%{height:4px}to{height:24px}}.recording-indicator{color:var(--danger);align-items:center;gap:.4rem;font-size:.85rem;font-weight:600;display:inline-flex}.recording-dot{background:var(--danger);border-radius:50%;width:8px;height:8px;animation:1s infinite alternate pulse-dot}@keyframes pulse-dot{0%{opacity:.4}to{opacity:1}}.textarea-editor{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);width:100%;min-height:200px;color:var(--text-primary);resize:vertical;transition:border-color var(--transition);padding:.85rem 1rem;font-family:inherit;font-size:.95rem;line-height:1.6}.textarea-editor:focus{border-color:var(--primary);outline:none}.word-count-bar{color:var(--text-muted);justify-content:space-between;margin-top:.4rem;font-size:.8rem;display:flex}.reorder-list{flex-direction:column;gap:.5rem;display:flex}.reorder-item{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:grab;transition:border-color var(--transition);justify-content:space-between;align-items:center;gap:.75rem;padding:.85rem 1rem;display:flex}.reorder-item:hover{border-color:var(--primary-border)}.inline-blank-select{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color);border-radius:var(--radius-sm);transition:border-color var(--transition);margin:0 .2rem;padding:.3rem .6rem;font-family:inherit;font-size:.9rem}.inline-blank-select:focus{border-color:var(--primary);outline:none}.choice-list{flex-direction:column;gap:.5rem;display:flex}.choice-item{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition);align-items:center;gap:.6rem;padding:.85rem 1rem;display:flex}.choice-item:hover{border-color:var(--primary-border)}.choice-item.selected{background:var(--primary-light);border-color:var(--primary)}.clickable-word{cursor:pointer;transition:background var(--transition);border-radius:3px;padding:.1rem .2rem}.clickable-word:hover{background:var(--primary-light)}.clickable-word.highlighted{background:var(--danger-bg);color:var(--danger);font-weight:600;text-decoration:underline}.score-indicator-correct{color:var(--success);align-items:center;gap:.2rem;font-weight:600;display:inline-flex}.score-indicator-incorrect{color:var(--danger);align-items:center;gap:.2rem;font-weight:600;display:inline-flex}.score-indicator-partial{color:var(--warning);align-items:center;gap:.2rem;font-weight:600;display:inline-flex}.modal-overlay{z-index:100;background:#0009;justify-content:center;align-items:center;padding:1rem;display:flex;position:fixed;inset:0}.modal-content{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);flex-direction:column;gap:1.25rem;width:100%;max-width:520px;padding:2rem;display:flex}.table-container{border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow-x:auto}.data-table{border-collapse:collapse;text-align:left;width:100%}.data-table th,.data-table td{border-bottom:1px solid var(--border-color);padding:.7rem .85rem;font-size:.85rem}.data-table th{background:var(--bg-tertiary);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;font-size:.75rem;font-weight:600}.data-table tr:hover td{background:var(--bg-card-hover)}.data-table tr:last-child td{border-bottom:none}.footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);color:var(--text-muted);margin-top:auto;padding:1.5rem;font-size:.8rem}.footer-content{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;max-width:1200px;margin:0 auto;display:flex}code{background:var(--bg-tertiary);border-radius:var(--radius-sm);font-family:var(--font-mono);color:var(--primary);padding:.15rem .4rem;font-size:.8rem}kbd{background:var(--bg-tertiary);border:1px solid var(--border-color);font-family:var(--font-mono);border-radius:4px;padding:.15rem .4rem;font-size:.8rem}blockquote{border-left:3px solid var(--primary);color:var(--text-secondary);padding-left:1rem;font-style:italic}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.spin{animation:1s linear infinite spin}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.preloader-overlay{z-index:10000;opacity:1;background:#111 radial-gradient(circle at 50% 45%,#f59e0b14 0%,#0000 65%);justify-content:center;align-items:center;transition:opacity .5s cubic-bezier(.4,0,.2,1),transform .5s cubic-bezier(.4,0,.2,1);display:flex;position:fixed;inset:0}.preloader-fade-out{opacity:0;pointer-events:none;transform:scale(1.02)}.preloader-content{text-align:center;flex-direction:column;align-items:center;gap:1.25rem;width:100%;max-width:360px;padding:2rem 1.5rem;display:flex}.preloader-orbital-wrapper{justify-content:center;align-items:center;width:96px;height:96px;margin-bottom:.25rem;display:flex;position:relative}.preloader-orbit-ring{border:2px dashed #f59e0b59;border-radius:50%;animation:9s linear infinite spin;position:absolute;inset:0}.preloader-orbit-ring-reverse{border:2px solid #0000;border-color:#f59e0b #0000 #f59e0b59;border-radius:50%;animation:3.5s cubic-bezier(.4,0,.2,1) infinite spinReverse;position:absolute;inset:7px}.preloader-logo-core{background:#f59e0b1f;border:1px solid #f59e0b59;border-radius:12px;justify-content:center;align-items:center;width:52px;height:52px;animation:2s ease-in-out infinite alternate corePulse;display:flex;box-shadow:0 0 20px #f59e0b26}.preloader-brand-badge{color:#f59e0b;letter-spacing:.5px;font-size:1.15rem;font-weight:800}.preloader-title-group{flex-direction:column;align-items:center;gap:.25rem;display:flex}.preloader-status-text{color:var(--text-secondary);min-height:1.25rem;margin:0;font-size:.825rem}.preloader-bar-container{flex-direction:column;gap:.4rem;width:100%;display:flex}.preloader-bar-track{background:#ffffff14;border-radius:9999px;width:100%;height:5px;position:relative;overflow:hidden}.preloader-bar-fill{background:#f59e0b;border-radius:9999px;height:100%;transition:width .25s cubic-bezier(.4,0,.2,1);box-shadow:0 0 10px #f59e0b99}.preloader-progress-number{color:var(--text-muted);font-size:.725rem;font-family:var(--font-mono);justify-content:space-between;display:flex}.preloader-modules-row{flex-wrap:wrap;justify-content:center;gap:.4rem;margin-top:.35rem;display:flex}.preloader-module-pill{border:1px solid var(--border-color);color:var(--text-muted);background:#ffffff0a;border-radius:9999px;align-items:center;gap:.3rem;padding:.25rem .55rem;font-size:.72rem;font-weight:500;transition:all .3s;display:inline-flex}.preloader-module-pill.active{color:#f59e0b;background:#f59e0b1f;border-color:#f59e0b59}@keyframes spinReverse{0%{transform:rotate(360deg)}to{transform:rotate(0)}}@keyframes corePulse{0%{transform:scale(.96);box-shadow:0 0 10px #f59e0b1a}to{transform:scale(1.04);box-shadow:0 0 24px #f59e0b4d}}