:root{--primary:#1a365d;--secondary:#e53e3e;--accent:#edf2f7;--bg:#f7fafc;--text:#2d3748;--white:#fff;--glass:#fffc;--shadow:0 10px 15px -3px #0000001a, 0 4px 6px -2px #0000000d;--transition:all .3s ease}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg);color:var(--text);font-family:Outfit,Inter,system-ui,-apple-system,sans-serif;line-height:1.6;overflow-x:hidden}.container{max-width:1200px;margin:0 auto;padding:2rem}h1,h2,h3{color:var(--primary);font-weight:700}.card{background:var(--white);transition:var(--transition);cursor:pointer;border:1px solid #00000008;border-radius:1.5rem;padding:2.5rem;position:relative;overflow:hidden;box-shadow:0 4px 20px #0000000a}.card:hover{border-color:var(--secondary);transform:translateY(-8px);box-shadow:0 20px 40px #00000014}.practice-card:hover h3{color:var(--secondary)}.practice-card .btn{opacity:.8;transition:var(--transition)}.practice-card:hover .btn{opacity:1;transform:translateY(-2px)}.module-header{justify-content:flex-start;align-items:center;gap:1.5rem;margin-bottom:1.5rem;display:flex}.module-header h3{flex:1;line-height:1.2}.module-badge{background:linear-gradient(135deg, var(--primary) 0%, #2c5282 100%);color:var(--white);text-transform:uppercase;letter-spacing:.1em;border-radius:.75rem;flex-direction:column;align-items:center;padding:.5rem 1rem;font-size:.7rem;font-weight:800;line-height:1.2;display:flex;box-shadow:0 4px 12px #1a365d33}.module-badge span:last-child{margin-top:2px;font-size:1.1rem}.lesson-item{transition:var(--transition);background:var(--white);border:1px solid #0000000d!important}.lesson-item:hover{background:var(--bg);border-color:var(--secondary)!important}nav{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:100;background:#fffc;border-bottom:1px solid #0000000d;justify-content:space-between;align-items:center;padding:1.5rem 5%;display:flex;position:sticky;top:0}.logo{color:var(--primary);letter-spacing:-.02em;align-items:center;gap:.5rem;font-size:1.4rem;font-weight:800;display:flex}.logo span{color:var(--secondary);background:linear-gradient(to bottom right, var(--secondary), #c53030);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.btn{cursor:pointer;transition:var(--transition);letter-spacing:.01em;border:none;border-radius:.8rem;justify-content:center;align-items:center;gap:.5rem;padding:.8rem 1.8rem;font-family:inherit;font-size:.9rem;font-weight:700;display:inline-flex}.btn-primary{background:linear-gradient(135deg, var(--secondary) 0%, #c53030 100%);color:var(--white);box-shadow:0 4px 15px #e53e3e33}.btn-primary:hover{filter:brightness(1.1);transform:translateY(-2px);box-shadow:0 8px 25px #e53e3e4d}.btn-outline{background:var(--white);color:var(--primary);border:1px solid #0000001a;box-shadow:0 2px 5px #00000005}.btn-outline:hover{background:var(--bg);border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}.flashcard{perspective:1000px;width:100%;height:200px}.flashcard-inner{text-align:center;width:100%;height:100%;transform-style:preserve-3d;transition:transform .6s;position:relative}.flashcard.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{backface-visibility:hidden;border-radius:1rem;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;padding:1rem;display:flex;position:absolute}.flashcard-front{background:var(--white);color:var(--primary)}.flashcard-back{background:var(--primary);color:var(--white);transform:rotateY(180deg)}.progress-bar{background:#e2e8f0;border-radius:4px;width:100%;height:8px;margin:2rem 0}.progress-fill{background:var(--secondary);border-radius:4px;height:100%;transition:width .5s}.btn-speak{background:var(--white);cursor:pointer;width:40px;height:40px;transition:var(--transition);z-index:10;border:1px solid #0000001a;border-radius:50%;justify-content:center;align-items:center;font-size:1.2rem;display:flex;position:absolute;top:10px;right:10px;box-shadow:0 4px 6px #0000000d}.btn-speak:hover{background:var(--primary);color:var(--white);transform:scale(1.1)}.practice-screen{max-width:800px;margin:0 auto}.chat-container{flex-direction:column;gap:2rem;margin-bottom:3rem;display:flex}.chat-bubble{max-width:80%;box-shadow:var(--shadow);border-radius:1.5rem;padding:1.5rem;position:relative}.tutor-bubble{background:var(--white);border-bottom-left-radius:0;align-self:flex-start}.user-bubble{background:var(--primary);color:var(--white);border-bottom-right-radius:0;align-self:flex-end}.user-bubble.success{background:#38a169}.user-bubble.error{background:#e53e3e}.tutor-label,.user-label{text-transform:uppercase;opacity:.6;margin-bottom:.5rem;font-size:.8rem;font-weight:800}.french-text{color:var(--primary);margin-bottom:.5rem;font-size:1.5rem;font-weight:700}.translation-text{opacity:.7;font-size:1rem}.controls-area{text-align:center;margin-top:2rem}.btn-mic{background:var(--primary);color:var(--white);cursor:pointer;border:none;border-radius:50%;flex-direction:column;justify-content:center;align-items:center;gap:.5rem;width:120px;height:120px;font-family:inherit;font-weight:700;transition:all .3s cubic-bezier(.175,.885,.32,1.275);display:flex;box-shadow:0 10px 20px #1a365d4d}.btn-mic:hover{transform:scale(1.1)}.btn-mic.recording{background:#e53e3e;animation:1.5s infinite pulse}@keyframes pulse{0%{transform:scale(1);box-shadow:0 0 #e53e3eb3}70%{transform:scale(1.05);box-shadow:0 0 0 20px #e53e3e00}to{transform:scale(1);box-shadow:0 0 #e53e3e00}}.hint-container{text-align:center;color:#c53030;background:#fff5f5;border:1px solid #feb2b2;border-radius:.5rem;margin-top:1rem;padding:1rem}.success-area{animation:.5s ease-out slideUp}.success-msg{color:#38a169;margin-bottom:1.5rem;font-size:1.5rem;font-weight:800}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.btn-icon{cursor:pointer;background:0 0;border:1px solid #0000001a;border-radius:50%;justify-content:center;align-items:center;width:32px;height:32px;margin-top:.5rem;display:flex}.xp-fill{position:relative;overflow:hidden}.xp-fill:after{content:"";background:linear-gradient(90deg,#0000,#fff6,#0000);animation:2s infinite shine;position:absolute;inset:0}@keyframes shine{0%{transform:translate(-100%)}to{transform:translate(100%)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}