@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@300;400;500;600;700;800&display=swap";.landing-container{background:var(--bg-surface);min-height:100vh;color:var(--text-main);font-family:var(--font-main);flex-direction:column;display:flex;overflow-y:auto}.landing-nav{border-bottom:2px solid var(--primary-accent);justify-content:space-between;align-items:center;padding:1.5rem 4vw;display:flex}.logo-section{align-items:center;gap:1rem;display:flex}.logo-img{object-fit:contain;filter:drop-shadow(0 2px 4px #0000001a);width:32px;height:32px}.logo-section h1{letter-spacing:-.05em;text-transform:uppercase;font-size:1.7rem;font-weight:900}.nav-actions{align-items:center;gap:2rem;display:flex}.nav-link{letter-spacing:-.02em;cursor:pointer;color:var(--text-dim);font-size:1.05rem;font-weight:600;transition:all .2s}.nav-link:hover{color:var(--text-main);transform:translateY(-1px)}.nav-divider{background:#0000001a;border-radius:2px;width:2px;height:24px}.nav-login-btn{border:2px solid var(--primary-accent);color:var(--primary-accent);cursor:pointer;background:0 0;border-radius:40px;padding:.6rem 2rem;font-family:inherit;font-weight:700;transition:all .2s cubic-bezier(.23,1,.32,1)}.nav-login-btn:hover{background:var(--primary-accent);color:var(--bg-surface);transform:translateY(-2px);box-shadow:0 4px 15px #00000026}.landing-main{flex-direction:column;flex:1;align-items:center;padding:0 0 8rem;display:flex}.hero-wrapper{border-bottom:2px solid var(--primary-accent);justify-content:center;width:100%;padding:8rem 2rem;display:flex;position:relative;overflow:hidden}.hero-wrapper:after{content:"";background:radial-gradient(circle at center, transparent 60%, var(--bg-surface) 100%);z-index:0;pointer-events:none;position:absolute;inset:0}.hero-bg-img{object-fit:cover;z-index:0;filter:grayscale(10%)opacity(.3);pointer-events:none;width:100%;height:100%;position:absolute;top:0;left:0}.hero-section{z-index:1;text-align:center;flex-direction:column;align-items:center;gap:2rem;max-width:900px;display:flex;position:relative}.hero-badge{border:2px solid var(--primary-accent);background:var(--bg-deep);border-radius:40px;align-items:center;gap:.6rem;padding:.5rem 1.25rem;font-size:.95rem;font-weight:700;display:flex}.hero-title{letter-spacing:-.04em;color:var(--text-main);font-size:clamp(4rem,8vw,6.5rem);font-weight:900;line-height:1.05}.highlight-text{z-index:1;padding:0 .5rem;display:inline-block;position:relative}.highlight-text:after{content:"";z-index:-1;background:#e4e4e7;width:100%;height:24px;position:absolute;bottom:12px;left:0;transform:skew(-15deg)}.hero-subtitle{color:var(--text-dim);max-width:700px;font-size:1.4rem;font-weight:500;line-height:1.5}.hero-actions{margin-top:1.5rem}.primary-cta{background:var(--primary-accent);color:var(--bg-surface);border:2px solid var(--primary-accent);cursor:pointer;border-radius:50px;align-items:center;gap:1rem;padding:1.2rem 3rem;font-family:inherit;font-size:1.25rem;font-weight:800;transition:transform .2s cubic-bezier(.23,1,.32,1),box-shadow .2s;display:flex}.primary-cta:hover{transform:translateY(-4px);box-shadow:6px 6px #000}.features-section{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:3rem;width:100%;max-width:1100px;margin-top:8rem;display:grid}.feature-card{background:var(--bg-surface);border:3px solid var(--primary-accent);border-radius:16px;padding:2.5rem;transition:transform .3s cubic-bezier(.23,1,.32,1);box-shadow:4px 4px #000}.feature-card:hover{transform:translate(-4px,-4px);box-shadow:8px 8px #000}.f-icon{background:var(--primary-accent);width:64px;height:64px;color:var(--bg-surface);border-radius:12px;justify-content:center;align-items:center;margin-bottom:1.5rem;display:flex}.feature-card h3{margin-bottom:1rem;font-size:1.7rem;font-weight:800}.feature-card p{color:var(--text-dim);font-size:1.1rem;font-weight:500;line-height:1.6}.landing-footer{background:var(--bg-surface);border-top:2px solid var(--primary-accent);padding:6rem 4rem 2rem}.footer-content{border-bottom:1px solid #0000001a;flex-wrap:wrap;justify-content:space-between;gap:4rem;max-width:1200px;margin:0 auto;padding-bottom:4rem;display:flex}.footer-brand{flex:1;min-width:300px;max-width:400px}.footer-brand .logo-section h2{text-transform:uppercase;letter-spacing:-.05em;color:var(--text-main);margin:0;font-size:1.5rem;font-weight:900}.footer-brand p{color:var(--text-dim);margin-top:1rem;font-size:1.05rem;font-weight:500;line-height:1.6}.footer-links{flex-wrap:wrap;gap:6rem;display:flex}.link-column{flex-direction:column;gap:1rem;display:flex}.link-column h4{color:var(--text-main);margin-bottom:.5rem;font-size:1.1rem;font-weight:800}.link-column span{color:var(--text-dim);cursor:pointer;font-weight:600;transition:all .2s}.link-column span:hover{color:var(--text-main);transform:translate(4px)}.footer-bottom{max-width:1200px;color:var(--text-dim);justify-content:space-between;align-items:center;margin:0 auto;padding-top:2rem;font-size:.95rem;font-weight:600;display:flex}.social-links{gap:1.5rem;display:flex}.social-links span{cursor:pointer;transition:color .2s}.social-links span:hover{color:var(--text-main)}.error-text{color:#ff4d4d;margin-top:1.5rem;font-size:1rem;font-weight:600}@media (width<=900px){.hero-title{font-size:clamp(3.5rem,8vw,4.5rem)}}@media (width<=768px){.landing-nav{padding:1.5rem 2rem}.nav-link,.nav-divider{display:none}.nav-actions{gap:1rem}.hero-wrapper{padding:6rem 1rem}.hero-title{font-size:clamp(3rem,10vw,4rem)}.hero-subtitle{font-size:1.15rem}.primary-cta{padding:1rem 2rem;font-size:1.1rem}.landing-footer{padding:4rem 2rem 2rem}.footer-links{gap:3rem}.footer-bottom{text-align:center;flex-direction:column;gap:1rem}}@media (width<=480px){.logo-section h1{font-size:1.4rem}.feature-card{padding:1.5rem}.footer-content{gap:3rem}.footer-links{flex-direction:column;gap:2rem}}.login-screen{background:var(--bg-deep);justify-content:center;align-items:center;width:100vw;height:100vh;display:flex;position:relative;overflow:hidden}.login-backdrop{background:radial-gradient(circle at center, var(--secondary-accent) 0%, transparent 60%);opacity:.1;filter:blur(100px);width:150%;height:150%;animation:20s infinite alternate bgFloat;position:absolute}@keyframes bgFloat{0%{transform:translate(-10%,-10%)rotate(0)}to{transform:translate(10%,10%)rotate(10deg)}}.login-card{text-align:center;z-index:10;border-radius:32px;width:100%;max-width:450px;padding:3.5rem;position:relative}.login-header h1{background:linear-gradient(135deg, #000, var(--primary-accent));-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:.5rem;font-family:Outfit,sans-serif;font-size:3rem}.login-logo-img{filter:drop-shadow(0 4px 12px #00000026);width:80px;height:80px;margin-bottom:1.5rem}.login-header p{color:var(--text-dim);margin-bottom:2.5rem;font-size:1rem}.google-btn{color:#000;cursor:pointer;background:#fff;border:none;border-radius:14px;justify-content:center;align-items:center;gap:1rem;width:100%;padding:1rem;font-size:1rem;font-weight:700;transition:all .3s;display:flex;box-shadow:0 4px 20px #ffffff1a}.google-btn:hover{transform:translateY(-2px);box-shadow:0 8px 30px #0003}.google-btn img{width:20px}.login-footer{color:var(--text-dim);margin-top:2rem;font-size:.75rem;line-height:1.5}.error-text{color:#ff4d4d;margin-top:1.5rem;font-size:.85rem}.back-btn{color:var(--text-main);cursor:pointer;z-index:20;background:0 0;border:none;align-items:center;gap:.5rem;font-size:1.05rem;font-weight:700;transition:transform .2s;display:flex;position:absolute;top:2rem;left:3rem}.back-btn:hover{transform:translate(-4px)}.voice-orb-container{flex-direction:column;justify-content:center;align-items:center;height:100%;padding:1rem;display:flex}.voice-orb{border:4px solid var(--primary-accent);cursor:pointer;background:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:130px;height:130px;transition:all .4s cubic-bezier(.23,1,.32,1);display:flex;position:relative;box-shadow:0 10px 30px #0000000d}.voice-orb:hover:not(:disabled){transform:scale(1.05);box-shadow:0 15px 40px #0000001a}.voice-orb.listening{background:var(--primary-accent);color:#fff;animation:2s ease-in-out infinite monochromeBreath}@keyframes monochromeBreath{0%,to{transform:scale(1);box-shadow:0 0 #0003}50%{transform:scale(1.1);box-shadow:0 0 0 20px #0000}}.voice-orb.thinking:after{content:"";border:2px solid #0000;border-top-color:var(--primary-accent);border-radius:50%;animation:1s linear infinite rotateThinking;position:absolute;inset:-8px}@keyframes rotateThinking{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.voice-orb.speaking{animation:.5s infinite alternate speakingRipple}@keyframes speakingRipple{0%{border-width:4px;transform:scale(1)}to{border-width:8px;transform:scale(1.05)}}.text-feedback{flex-direction:column;align-items:center;gap:.75rem;width:100%;min-height:80px;margin-top:1.5rem;display:flex}.status-text{color:#fff;text-transform:uppercase;letter-spacing:.3em;background:#000;border-radius:2px;padding:.4rem 1rem;font-size:.7rem;font-weight:900}.live-transcript{color:var(--primary-accent);text-align:center;max-width:100%;margin:0;padding:0 1rem;font-family:Outfit,sans-serif;font-size:1.1rem;font-weight:700;line-height:1.4}@media (width<=768px){.voice-orb{width:110px;height:110px}.voice-orb-container{padding:1.5rem 1rem}.text-feedback{min-height:60px;margin-top:1rem}.status-text{letter-spacing:.2em;padding:.35rem .8rem;font-size:.65rem}.live-transcript{font-size:1rem}}.chat-history{scroll-behavior:smooth;flex-direction:column;flex:1;gap:1.5rem;padding:1.5rem;display:flex;overflow-y:auto;-webkit-mask-image:linear-gradient(#0000,#000 5% 95%,#0000);mask-image:linear-gradient(#0000,#000 5% 95%,#0000)}.chat-empty{color:var(--text-dim);letter-spacing:.1em;text-transform:uppercase;opacity:.5;flex:1;justify-content:center;align-items:center;font-size:1rem;font-weight:500;display:flex}.message-wrapper{flex-direction:column;display:flex}.message-wrapper.user{align-items:flex-end}.message-wrapper.assistant{align-items:flex-start}.message-bubble{border-radius:4px;max-width:80%;padding:.75rem 1rem;font-size:.95rem;line-height:1.5}.message-wrapper.user .message-bubble{color:#fff;background:#000}.message-wrapper.assistant .message-bubble{color:#000;background:#f1f1f1;border-left:3px solid #000}.message-timestamp{color:#999;text-transform:uppercase;letter-spacing:.05em;margin-top:.4rem;font-size:.65rem;font-weight:800}.chat-history::-webkit-scrollbar{width:4px}.chat-history::-webkit-scrollbar-track{background:0 0}.chat-history::-webkit-scrollbar-thumb{background:#eee}.chat-history::-webkit-scrollbar-thumb:hover{background:#fff3}@media (width<=768px){.chat-history{padding:1.5rem}.message-wrapper{max-width:90%}}.modal-overlay{z-index:1000;box-sizing:border-box;background:#fffffff7;justify-content:center;align-items:center;width:100vw;height:100vh;padding:1.5rem;display:flex;position:fixed;top:0;left:0}.modal-content{box-sizing:border-box;background:#fff;border:4px solid #000;border-radius:0;flex-direction:column;width:100%;max-width:620px;max-height:90vh;padding:4rem;display:flex;position:relative;overflow:hidden;box-shadow:20px 20px #000}.modal-header{flex-shrink:0;margin-bottom:2rem}.modal-header h2{color:#000;letter-spacing:-.05em;text-transform:uppercase;margin:0;font-family:Outfit,sans-serif;font-size:2.5rem;font-weight:800}.dismiss-btn{color:#000;cursor:pointer;background:#fff;border:2px solid #000;border-radius:4px;justify-content:center;align-items:center;padding:.5rem;display:flex;position:absolute;top:1.5rem;right:1.5rem}.dismiss-btn:hover{color:#fff;background:#000}.modal-desc{color:#666;text-transform:uppercase;letter-spacing:.05em;flex-shrink:0;margin-bottom:2rem;font-size:1rem;font-weight:700;line-height:1.5}.lessons-grid{-webkit-overflow-scrolling:touch;flex-direction:column;flex:1;gap:1rem;margin-bottom:1.5rem;padding-right:.5rem;display:flex;overflow-y:auto}.lesson-card-pro{cursor:pointer;background:#fdfdfd;border:2px solid #000;border-radius:0;flex-shrink:0;align-items:center;gap:1.5rem;padding:1.5rem;transition:all .2s;display:flex}.lesson-card-pro:hover{color:#fff;background:#000;transform:translate(4px,4px);box-shadow:-4px -4px #eee}.card-emoji{flex-shrink:0;font-size:3rem}.card-info h3{color:inherit;margin:0 0 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