:root{--bg-primary: #0a0e17;--bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);--glass-bg: rgba(255, 255, 255, .03);--glass-border: rgba(255, 255, 255, .08);--glass-glow: 0 8px 32px 0 rgba(0, 0, 0, .37);--text-main: #f8fafc;--text-muted: #94a3b8;--accent-blue: #3b82f6;--accent-blue-hover: #2563eb;--accent-purple: #8b5cf6;--btn-know: rgba(16, 185, 129, .2);--btn-know-border: rgba(16, 185, 129, .5);--btn-hard: rgba(239, 68, 68, .2);--btn-hard-border: rgba(239, 68, 68, .5);--correct: #10b981;--incorrect: #ef4444}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Outfit,sans-serif;background:var(--bg-primary);background-image:var(--bg-gradient);color:var(--text-main);min-height:100vh;display:flex;justify-content:center;align-items:center;overflow:hidden}.app-container{width:100%;max-width:600px;height:100vh;position:relative;display:flex;flex-direction:column}.view{display:none;flex-direction:column;height:100%;width:100%;padding:1.5rem;animation:fadeIn .4s ease-out}.view.active{display:flex}.hidden{display:none!important}.glass-panel{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);box-shadow:var(--glass-glow);border-radius:24px}.login-card{width:100%;max-width:400px;padding:2.5rem 2rem;text-align:center;margin:auto}.login-card h1{font-size:2.5rem;font-weight:700;margin-bottom:.5rem;background:linear-gradient(to right,#60a5fa,#a78bfa);background-clip:text;-webkit-background-clip:text;color:transparent;-webkit-text-fill-color:transparent}.login-card p{color:var(--text-muted);margin-bottom:2rem;font-size:.95rem}.input-group,.input-group input{width:100%}.input-group{margin-bottom:1.5rem}.input-group input{padding:1rem 1.2rem;background:#0003;border:1px solid var(--glass-border);border-radius:12px;color:var(--text-main);font-family:inherit;font-size:1rem;outline:none;transition:all .2s ease}.input-group input:focus{border-color:var(--accent-purple);box-shadow:0 0 0 2px #8b5cf633}.primary-btn{width:100%;padding:1rem;background:linear-gradient(135deg,var(--accent-blue),var(--accent-purple));color:#fff;border:none;border-radius:12px;font-size:1.1rem;font-weight:600;cursor:pointer;transition:transform .2s,opacity .2s}.primary-btn:hover{transform:translateY(-2px);opacity:.9}.app-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;padding:.5rem 0}.user-info{display:flex;flex-direction:column;gap:4px}#user-display{font-weight:600;font-size:1.1rem}.progress-text,.daily-progress{font-size:.9rem;color:var(--accent-blue);font-weight:500}.icon-btn{background:#ffffff0d;border:1px solid var(--glass-border);color:var(--text-muted);padding:.5rem 1rem;border-radius:8px;cursor:pointer;font-family:inherit;transition:all .2s}.icon-btn:hover{background:#ffffff1a;color:var(--text-main)}.dashboard-menu{display:flex;flex-direction:column;gap:1.5rem;justify-content:center;flex-grow:1}.menu-btn{background:var(--glass-bg);border:1px solid var(--glass-border);padding:1.5rem;border-radius:20px;color:#fff;text-align:left;cursor:pointer;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.menu-btn h3{font-size:1.3rem;margin-bottom:.3rem}.menu-btn p{color:var(--text-muted);font-size:.95rem}.menu-btn:hover{transform:translateY(-3px);box-shadow:0 10px 30px #0003}.curriculum-btn h3{color:#818cf8}.curriculum-btn:hover{border-color:#818cf8}.notes-btn h3{color:#34d399}.notes-btn:hover{border-color:#34d399}.homework-btn h3{color:#fbbf24}.homework-btn:hover{border-color:#fbbf24}.verbs-btn h3{color:#f87171}.verbs-btn:hover{border-color:#f87171}.study-btn h3{color:var(--accent-blue)}.practice-btn h3{color:var(--accent-purple)}.content-area{flex-grow:1;width:100%;height:calc(100vh - 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