:root{--bg-deep: #0a0f1e;--bg-primary: #0f172a;--bg-card: rgba(255, 255, 255, .05);--bg-card-hover: rgba(255, 255, 255, .08);--bg-input: rgba(255, 255, 255, .07);--bg-glass: rgba(15, 23, 42, .85);--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #64748b;--accent: #3b82f6;--accent-hover: #2563eb;--accent-glow: rgba(59, 130, 246, .35);--success: #22c55e;--warning: #f59e0b;--danger: #ef4444;--reading: #8b5cf6;--listening: #06b6d4;--speaking: #f97316;--writing: #22c55e;--conversation: #ec4899;--border: rgba(255, 255, 255, .08);--border-hover: rgba(255, 255, 255, .14);--radius: 16px;--radius-sm: 10px;--radius-xs: 6px;--font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-display: "Space Grotesk", var(--font-body);--font-reading: "Georgia", "Times New Roman", serif;--duration-fast: .15s;--duration-normal: .3s;--duration-slow: .5s;--ease-out-expo: cubic-bezier(.16, 1, .3, 1);--ease-spring: cubic-bezier(.34, 1.56, .64, 1);--glow-accent: 0 0 24px rgba(59, 130, 246, .3);--glow-reading: 0 0 24px rgba(139, 92, 246, .3);--glow-listening: 0 0 24px rgba(6, 182, 212, .3);--glow-speaking: 0 0 24px rgba(249, 115, 22, .3);--glow-writing: 0 0 24px rgba(34, 197, 94, .3);--glow-conversation: 0 0 24px rgba(236, 72, 153, .3)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);background:linear-gradient(145deg,#0a0f1e,#0f172a 40%,#0a1628);background-attachment:fixed;color:var(--text-primary);min-height:100dvh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100dvh;display:flex;flex-direction:column}a{color:var(--accent);text-decoration:none}::selection{background:#3b82f64d}.page-title{font-family:var(--font-display);font-size:32px;font-weight:800;letter-spacing:-.025em;margin-bottom:24px}.section-title{font-family:var(--font-display);font-size:18px;font-weight:700;letter-spacing:-.01em;margin-bottom:12px}.score-big{font-family:var(--font-display);font-size:48px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums}.score-label{font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em}.container{max-width:800px;margin:0 auto;padding:0 16px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.card{background:var(--bg-card);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:transform var(--duration-normal) var(--ease-out-expo),box-shadow var(--duration-normal) var(--ease-out-expo),border-color var(--duration-normal)}.card:hover{border-color:var(--border-hover)}.card-lift:hover{transform:translateY(-3px);box-shadow:0 12px 40px #00000059}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border:none;border-radius:var(--radius-sm);font-family:var(--font-body);font-size:15px;font-weight:600;cursor:pointer;transition:all var(--duration-normal) var(--ease-out-expo);position:relative;overflow:hidden}.btn-primary{background:linear-gradient(135deg,var(--accent),#6366f1);color:#fff}.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--glow-accent)}.btn-primary:active{transform:translateY(0)}.btn-primary:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}.btn-outline{background:transparent;color:var(--text-primary);border:1px solid var(--border)}.btn-outline:hover{background:var(--bg-card-hover);border-color:var(--border-hover)}.btn-lg{padding:16px 32px;font-size:16px;border-radius:var(--radius)}.btn-reading{background:linear-gradient(135deg,var(--reading),#7c3aed);color:#fff}.btn-reading:hover{box-shadow:var(--glow-reading);transform:translateY(-1px)}.btn-listening{background:linear-gradient(135deg,var(--listening),#0891b2);color:#fff}.btn-listening:hover{box-shadow:var(--glow-listening);transform:translateY(-1px)}.btn-speaking{background:linear-gradient(135deg,var(--speaking),#ea580c);color:#fff}.btn-speaking:hover{box-shadow:var(--glow-speaking);transform:translateY(-1px)}.btn-writing{background:linear-gradient(135deg,var(--writing),#16a34a);color:#fff}.btn-writing:hover{box-shadow:var(--glow-writing);transform:translateY(-1px)}.btn-conversation{background:linear-gradient(135deg,var(--conversation),#db2777);color:#fff}.btn-conversation:hover{box-shadow:var(--glow-conversation);transform:translateY(-1px)}input,textarea,select{background:var(--bg-input);color:var(--text-primary);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 16px;font-family:var(--font-body);font-size:15px;width:100%;outline:none;transition:border-color var(--duration-fast),box-shadow var(--duration-fast)}input:focus,textarea:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px #3b82f626}textarea{resize:vertical;min-height:120px;line-height:1.7}.input-group{position:relative}.input-group label{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:15px;pointer-events:none;transition:all var(--duration-fast)}.input-group input:focus+label,.input-group input:not(:placeholder-shown)+label{top:8px;font-size:11px;font-weight:600;color:var(--accent);transform:translateY(0)}.input-group input{padding-top:22px;padding-bottom:8px}.nav{position:fixed;bottom:0;left:0;right:0;background:var(--bg-glass);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-top:1px solid var(--border);display:flex;justify-content:space-around;padding:6px 0;padding-bottom:max(6px,env(safe-area-inset-bottom));z-index:100}.nav-item{display:flex;flex-direction:column;align-items:center;gap:3px;padding:6px 12px;color:var(--text-muted);font-size:10px;font-weight:600;letter-spacing:.02em;text-decoration:none;transition:color var(--duration-fast);position:relative}.nav-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.nav-item.active{color:var(--accent)}.nav-item.active:before{content:"";position:absolute;top:-6px;left:50%;transform:translate(-50%);width:24px;height:3px;border-radius:2px;background:var(--accent);box-shadow:0 0 8px var(--accent-glow)}.page{flex:1;padding:20px 16px;padding-bottom:calc(76px + env(safe-area-inset-bottom));animation:fadeSlideIn var(--duration-slow) var(--ease-out-expo)}@keyframes fadeSlideIn{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.skill-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 14px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.02em}.skill-badge.reading{background:#8b5cf626;color:var(--reading)}.skill-badge.listening{background:#06b6d426;color:var(--listening)}.skill-badge.speaking{background:#f9731626;color:var(--speaking)}.skill-badge.writing{background:#22c55e26;color:var(--writing)}.streak{display:flex;align-items:center;gap:8px;font-family:var(--font-display);font-size:28px;font-weight:800}.streak-flame{font-size:32px;filter:drop-shadow(0 0 8px rgba(249,115,22,.5));animation:flameGlow 2s ease-in-out infinite alternate}@keyframes flameGlow{0%{filter:drop-shadow(0 0 6px rgba(249,115,22,.3))}to{filter:drop-shadow(0 0 14px rgba(249,115,22,.6))}}.stepper{display:flex;align-items:center;gap:0;margin:12px 0}.stepper-step{display:flex;align-items:center;gap:0;flex:1}.stepper-dot{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;border:2px solid var(--border);color:var(--text-muted);background:var(--bg-primary);transition:all var(--duration-normal);flex-shrink:0}.stepper-dot.active{border-color:var(--accent);color:var(--accent);box-shadow:0 0 12px var(--accent-glow)}.stepper-dot.completed{border-color:var(--success);background:var(--success);color:#fff}.stepper-line{flex:1;height:2px;background:var(--border);position:relative}.stepper-line-fill{position:absolute;top:0;left:0;height:100%;background:var(--success);border-radius:1px;transition:width .8s var(--ease-out-expo)}.stepper-label{font-size:10px;color:var(--text-muted);text-align:center;margin-top:4px;font-weight:500}.chat-container{display:flex;flex-direction:column;gap:10px;flex:1;overflow-y:auto;padding-bottom:16px}.chat-bubble{max-width:82%;padding:12px 16px;border-radius:18px;line-height:1.6;font-size:15px;animation:bubbleIn var(--duration-normal) var(--ease-out-expo)}.chat-bubble.user{background:linear-gradient(135deg,var(--accent),#6366f1);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}.chat-bubble.assistant{background:var(--bg-card);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--border);color:var(--text-primary);align-self:flex-start;border-bottom-left-radius:4px}@keyframes bubbleIn{0%{opacity:0;transform:translateY(10px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}.typing-indicator{display:flex;gap:5px;padding:14px 18px;align-self:flex-start;background:var(--bg-card);border:1px solid var(--border);border-radius:18px 18px 18px 4px}.typing-indicator span{width:8px;height:8px;border-radius:50%;background:var(--text-muted);animation:typingBounce 1.4s ease-in-out infinite}.typing-indicator span:nth-child(2){animation-delay:.15s}.typing-indicator span:nth-child(3){animation-delay:.3s}@keyframes typingBounce{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-8px);opacity:1}}.mic-btn{width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,var(--conversation),#db2777);border:none;color:#fff;font-size:26px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--duration-normal) var(--ease-spring);position:relative;box-shadow:0 4px 20px #ec48994d}.mic-btn:hover{transform:scale(1.06)}.mic-btn:active{transform:scale(.97)}.mic-btn.recording{background:linear-gradient(135deg,var(--danger),#dc2626);box-shadow:0 4px 24px #ef444466}.mic-btn.recording:before{content:"";position:absolute;top:-10px;right:-10px;bottom:-10px;left:-10px;border-radius:50%;border:2px solid var(--danger);animation:micPulse 1.5s ease-out infinite}.mic-btn.recording:after{content:"";position:absolute;top:-20px;right:-20px;bottom:-20px;left:-20px;border-radius:50%;border:1px solid rgba(239,68,68,.3);animation:micPulse 1.5s ease-out .3s infinite}@keyframes micPulse{0%{transform:scale(1);opacity:.6}to{transform:scale(1.3);opacity:0}}.waveform{display:flex;align-items:center;justify-content:center;gap:3px;height:36px}.waveform span{width:3px;border-radius:2px;background:var(--conversation);animation:waveBar 1.2s ease-in-out infinite}.waveform span:nth-child(1){animation-delay:0s}.waveform span:nth-child(2){animation-delay:.1s}.waveform span:nth-child(3){animation-delay:.2s}.waveform span:nth-child(4){animation-delay:.3s}.waveform span:nth-child(5){animation-delay:.4s}@keyframes waveBar{0%,to{height:6px;opacity:.4}50%{height:28px;opacity:1}}.timer{font-family:var(--font-display);font-size:28px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--warning);text-shadow:0 0 12px rgba(245,158,11,.3)}.feedback-panel{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-top:20px;animation:feedbackReveal var(--duration-slow) var(--ease-out-expo)}@keyframes feedbackReveal{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.score-reveal{animation:scoreReveal .6s var(--ease-out-expo) forwards}@keyframes scoreReveal{0%{opacity:0;transform:translateY(24px) scale(.8)}to{opacity:1;transform:translateY(0) scale(1)}}.rubric-row{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid var(--border)}.rubric-bar{width:100px;height:5px;border-radius:3px;background:#ffffff0f;overflow:hidden}.rubric-bar-fill{height:100%;border-radius:3px;transform-origin:left;animation:barGrow .8s var(--ease-out-expo) forwards}@keyframes barGrow{0%{transform:scaleX(0)}}.correction{padding:10px 14px;margin:6px 0;border-radius:var(--radius-sm);background:#ef44440f;border-left:3px solid var(--danger);animation:fadeSlideIn var(--duration-normal) var(--ease-out-expo)}.correction .original{text-decoration:line-through;color:#ef4444cc}.correction .corrected{color:var(--success);font-weight:600}.option-btn{display:block;width:100%;text-align:left;padding:12px 16px;margin:5px 0;background:#ffffff08;color:var(--text-primary);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;font-size:14px;font-family:var(--font-body);transition:all var(--duration-normal) var(--ease-spring)}.option-btn:hover{background:#ffffff0f;border-color:var(--border-hover)}.option-btn.selected{background:#3b82f61f;border-color:var(--accent);color:#fff;transform:scale(1.01);box-shadow:0 0 0 1px var(--accent)}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.skeleton{background:linear-gradient(90deg,#ffffff0a 25%,#ffffff14,#ffffff0a 75%);background-size:200% 100%;animation:shimmer 1.5s ease-in-out infinite;border-radius:var(--radius-sm)}.skeleton-text{height:14px;margin:6px 0}.skeleton-title{height:28px;width:60%;margin-bottom:16px}.skeleton-card{height:120px;border-radius:var(--radius)}.skeleton-ring{width:80px;height:80px;border-radius:50%}.loading-center{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:48px;color:var(--text-secondary)}.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.stagger>*{opacity:0;animation:fadeSlideIn var(--duration-normal) var(--ease-out-expo) forwards}.stagger>*:nth-child(1){animation-delay:0ms}.stagger>*:nth-child(2){animation-delay:60ms}.stagger>*:nth-child(3){animation-delay:.12s}.stagger>*:nth-child(4){animation-delay:.18s}.stagger>*:nth-child(5){animation-delay:.24s}.stagger>*:nth-child(6){animation-delay:.3s}.stagger>*:nth-child(7){animation-delay:.36s}.stagger>*:nth-child(8){animation-delay:.42s}.login-bg{position:relative;min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px}.login-bg:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;background-image:linear-gradient(rgba(59,130,246,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(59,130,246,.04) 1px,transparent 1px);background-size:60px 60px;animation:gridDrift 25s linear infinite;pointer-events:none}@keyframes gridDrift{0%{transform:translate(0)}to{transform:translate(60px,60px)}}.login-card{background:var(--bg-card);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:20px;padding:40px 32px;width:100%;max-width:380px;animation:fadeSlideIn var(--duration-slow) var(--ease-out-expo)}.login-logo{width:64px;height:64px;margin:0 auto 24px;animation:logoGlow 3s ease-in-out infinite alternate}@keyframes logoGlow{0%{filter:drop-shadow(0 0 8px rgba(59,130,246,.3))}to{filter:drop-shadow(0 0 20px rgba(59,130,246,.6))}}.skill-card{display:flex;align-items:center;gap:14px;padding:18px 20px;border-radius:var(--radius);cursor:pointer;transition:all var(--duration-normal) var(--ease-out-expo);border:1px solid transparent;background:var(--bg-card)}.skill-card:hover{transform:translateY(-2px);border-color:var(--border-hover)}.skill-card.reading:hover{box-shadow:var(--glow-reading);border-color:#8b5cf64d}.skill-card.listening:hover{box-shadow:var(--glow-listening);border-color:#06b6d44d}.skill-card.speaking:hover{box-shadow:var(--glow-speaking);border-color:#f973164d}.skill-card.writing:hover{box-shadow:var(--glow-writing);border-color:#22c55e4d}.skill-card.conversation:hover{box-shadow:var(--glow-conversation);border-color:#ec48994d}.skill-card-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.skill-card-icon svg{width:24px;height:24px;stroke:#fff;fill:none;stroke-width:1.8}.skill-card-icon.reading{background:#8b5cf633}.skill-card-icon.listening{background:#06b6d433}.skill-card-icon.speaking{background:#f9731633}.skill-card-icon.writing{background:#22c55e33}.skill-card-icon.conversation{background:#ec489933}.passage-text{font-family:var(--font-reading);font-size:16px;line-height:1.9;color:var(--text-primary);letter-spacing:.01em}input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:6px;border-radius:3px;background:#ffffff14;outline:none;border:none;padding:0}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:var(--accent);cursor:pointer;box-shadow:0 0 8px var(--accent-glow);transition:transform var(--duration-fast)}input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.2)}@media(min-width:768px){.container{padding:0 24px}.page{padding:32px 24px}}