body.light-mode{--bg-primary:#fff;--bg-secondary:#f8fafc;--bg-tertiary:#f1f5f9;--bg-gradient:radial-gradient(circle at 80% 20%, #f1f5f9 0%, #fff 70%);--bg-card:#ffffffe6;--bg-card-hover:#fff;--border-color:#0f172a14;--border-hover:#0f172a29;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#64748b;--glass-bg:#fffffff2;--glass-border:1px solid #0f172a14;--bg-trans-white-2:#0f172a05;--bg-trans-white-4:#0f172a0a;--bg-trans-white-5:#0f172a0d;--bg-trans-white-10:#0f172a1a;--bg-trans-white-12:#0f172a1f;--bg-trans-white-15:#0f172a26;--bg-trans-black-20:#0f172a0d;--accent-indigo-trans-2:#d2b12e05;--accent-indigo-trans-5:#d2b12e0d;--accent-indigo-trans-10:#d2b12e1a;--accent-indigo-trans-12:#d2b12e1f;--accent-indigo-trans-15:#d2b12e26;--accent-teal-trans-10:#14b8a61a;--accent-teal-trans-15:#14b8a626;--accent-violet-trans-5:#b5931b0d}:root{--bg-primary:#080808;--bg-secondary:#121212;--bg-tertiary:#1a1a1a;--bg-gradient:radial-gradient(circle at 80% 20%, #1a1a1a 0%, var(--bg-primary) 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var(--transition-normal);flex-direction:column;flex:1;display:flex}.main-wrapper.sidebar-collapsed{margin-left:var(--sidebar-collapsed-width)}.content-pane{padding:2rem;padding-bottom:calc(2rem + var(--toolbar-height));width:100%;max-width:1400px;animation:fadeIn var(--transition-fast) forwards;flex:1;margin:0 auto}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--bg-tertiary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.glass-panel{background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-blur);border:var(--glass-border);box-shadow:var(--glass-shadow);border-radius:16px}.card-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem;margin-bottom:2rem;display:grid}.btn{cursor:pointer;transition:all var(--transition-fast);border:1px solid 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#ffffff1a;min-height:80px;margin-top:1rem;font-size:5rem;font-weight:800;line-height:1}.tuner-cents-display{color:var(--text-secondary);font-size:1.1rem;font-weight:500}.tuner-cents-display.in-tune{color:var(--accent-teal);text-shadow:0 0 10px #14b8a666}.metronome-full-container{text-align:center;flex-direction:column;align-items:center;max-width:500px;margin:2rem auto;padding:3rem;display:flex}.metronome-large-display{font-family:var(--font-heading);color:var(--text-primary);margin-bottom:2rem;font-size:6rem;font-weight:800;line-height:1}.metronome-beat-indicator-container{gap:1.5rem;margin-bottom:3rem;display:flex}.metronome-beat-dot{border:1px solid var(--border-color);background:#ffffff0d;border-radius:50%;width:20px;height:20px;transition:all 80ms}.metronome-beat-dot.active{background:var(--accent-indigo);box-shadow:0 0 15px var(--accent-indigo);transform:scale(1.3)}.metronome-beat-dot.active.accented{background:var(--accent-violet);box-shadow:0 0 15px var(--accent-violet)}.key-selector{flex-wrap:wrap;justify-content:center;gap:.5rem;margin-bottom:2rem;display:flex}.key-btn{border:1px solid var(--border-color);cursor:pointer;transition:all var(--transition-fast);background:#ffffff05;border-radius:8px;padding:.5rem 1rem;font-size:.9rem;font-weight:600}.key-btn:hover,.key-btn.active{background:var(--accent-indigo);color:#fff;border-color:var(--accent-indigo)}.chords-grid{grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:1rem;margin-top:2rem;display:grid}.chord-button-card{background:var(--bg-card);border:var(--glass-border);cursor:pointer;transition:all var(--transition-fast);border-radius:16px;flex-direction:column;justify-content:center;align-items:center;padding:2rem 1rem;display:flex}.chord-button-card:hover{background:var(--bg-card-hover);border-color:var(--accent-indigo);transform:translateY(-4px);box-shadow:0 8px 24px #d2b12e33}.chord-roman{text-transform:uppercase;color:var(--text-muted);margin-bottom:.5rem;font-size:.8rem;font-weight:700}.chord-symbol{font-family:var(--font-heading);margin-bottom:.5rem;font-size:1.8rem;font-weight:700}.chord-notes{color:var(--text-secondary);font-size:.75rem}.fretboard-container{width:100%;margin-bottom:2rem;padding:2rem 0;overflow-x:auto}.fretboard{background:#2b231d;border:4px solid #1c1613;border-radius:4px;flex-direction:column;justify-content:space-between;width:900px;height:200px;padding:10px 0;display:flex;position:relative;box-shadow:0 10px 30px #0009}.fret{background:linear-gradient(90deg,#999,#666,#999);width:4px;position:absolute;top:0;bottom:0}.string-row{align-items:center;height:20px;display:flex;position:relative}.string-wire{width:100%;height:var(--thickness,2px);pointer-events:none;background:linear-gradient(#ccc,#777,#ccc);position:absolute;left:0}.fret-note-trigger{cursor:pointer;z-index:10;background:0 0;border:2px solid #0000;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:.7rem;font-weight:700;transition:all .15s;display:flex;position:absolute;transform:translate(-12px)}.fret-note-trigger:hover{background:#ffffff26;border-color:#fff6}.fret-note-trigger.active{background:var(--accent-gradient);color:#fff;border-color:#fff;box-shadow:0 0 10px #b5931bcc}.fret-markers{pointer-events:none;width:100%;height:100%;position:absolute}.fret-marker-dot{background:#ffffff26;border-radius:50%;width:12px;height:12px;position:absolute;top:50%;left:50%;transform:translate(-6px,-6px)}.journey-layout{grid-template-columns:220px 1fr;gap:2.5rem;display:grid}@media (width<=768px){.journey-layout{grid-template-columns:1fr}}.journey-sidebar-nav{flex-direction:column;gap:.5rem;display:flex}.journey-nav-btn{text-align:left;cursor:pointer;color:var(--text-secondary);transition:all var(--transition-fast);background:0 0;border:none;border-radius:8px;padding:.75rem 1rem;font-size:.95rem;font-weight:500}.journey-nav-btn:hover,.journey-nav-btn.active{color:#fff;background:#ffffff0a}.journey-nav-btn.active{color:var(--accent-violet);background:#b5931b1a;font-weight:600}.faq-list{flex-direction:column;gap:1rem;display:flex}.faq-item{border:1px solid var(--border-color);background:var(--bg-card);border-radius:12px;overflow:hidden}.faq-question{cursor:pointer;-webkit-user-select:none;user-select:none;transition:background var(--transition-fast);justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;font-weight:600;display:flex}.header-profile:hover{background:var(--bg-card-hover)}.profile-dropdown{background:var(--bg-tertiary)!important;-webkit-backdrop-filter:blur(32px)!important;border:1px solid var(--border-hover)!important}.dropdown-item{width:100%;color:var(--text-primary);text-align:left;cursor:pointer;background:0 0;border:none;align-items:center;gap:.75rem;padding:.75rem 1.25rem;font-size:.95rem;transition:all .2s;display:flex}.dropdown-item:hover{background:var(--bg-card-hover)}.dropdown-item svg{color:var(--text-muted)}.dropdown-item:hover svg{color:var(--accent-teal)}.faq-question:hover{background:var(--bg-card-hover)}.faq-answer{color:var(--text-secondary);padding:0 1.5rem 1.25rem;font-size:.9rem;line-height:1.6}.form-group{flex-direction:column;gap:.5rem;margin-bottom:1.5rem;display:flex}.form-group label{color:var(--text-secondary);font-size:.9rem;font-weight:500}.form-control{border:1px solid var(--border-color);width:100%;color:var(--text-primary);transition:border-color var(--transition-fast);background:#ffffff08;border-radius:10px;outline:none;padding:.75rem 1rem}.form-control:focus{border-color:var(--accent-indigo);background:#ffffff0d}textarea.form-control{resize:vertical;min-height:120px}.active-tool-indicator-badge{color:var(--accent-rose);background:#f43f5e26;border:1px solid #f43f5e4d;border-radius:12px;align-items:center;gap:.5rem;padding:.25rem .75rem;font-size:.75rem;font-weight:600;display:flex}.welcome-banner{justify-content:space-between;align-items:center;gap:1.5rem;margin-bottom:2rem;padding:2rem;display:flex}.continue-banner{align-items:center;gap:1.5rem;margin-bottom:2rem;padding:1.5rem;display:flex}.continue-banner img{object-fit:cover;border-radius:8px;flex-shrink:0;width:120px;height:auto}.continue-banner-body{flex:1;min-width:0}.continue-banner-btn{flex-shrink:0}.tuner-grid{grid-template-columns:1.5fr 1fr;align-items:start;gap:2rem;display:grid}.bpm-adjust-row{flex-wrap:wrap;justify-content:center;align-items:center;gap:1rem;margin-bottom:2rem;display:flex}.bpm-large-text{text-align:center;min-width:120px;font-size:2rem;font-weight:800}.chord-stats-bar{justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1.5rem;display:flex}@media (width<=768px){.sidebar{transition:transform var(--transition-normal), width var(--transition-normal)}.sidebar.collapsed{transform:translate(-100%);width:var(--sidebar-width)!important}.sidebar:not(.collapsed){transform:translate(0);width:var(--sidebar-width)!important}.main-wrapper,.main-wrapper.sidebar-collapsed{margin-left:0!important}.sidebar-backdrop{-webkit-backdrop-filter:blur(4px);z-index:95;background:#0000008c;width:100vw;height:100vh;position:fixed;top:0;left:0}.audio-toolbar{padding:0 1rem;left:0!important}.accessibility-btn,.theme-toggle-text,.stat-label{display:none!important}.search-box{cursor:pointer;border-radius:50%;justify-content:center;width:40px;height:40px;padding:0;overflow:hidden}.search-box input{opacity:0;width:0;padding:0;transition:width .3s,opacity .3s}.search-box:focus-within{border-radius:10px;justify-content:flex-start;width:180px;padding:0 .8rem;overflow:visible}.search-box:focus-within input{opacity:1;width:100%}.instrument-bar-minimal{-webkit-overflow-scrolling:touch;gap:.5rem;padding:.75rem 1rem;flex-wrap:nowrap!important;overflow-x:auto!important}.instrument-bar-minimal::-webkit-scrollbar{display:none!important}.instrument-options-container{flex-wrap:nowrap!important;overflow-x:visible!important}.tuner-grid{grid-template-columns:1fr;gap:1.5rem}}@media (width<=600px){.continue-banner{flex-direction:column;align-items:stretch;gap:1rem}.continue-banner img{width:100%;height:150px}.continue-banner-btn{width:100%}.chord-stats-bar{text-align:center;flex-direction:column;align-items:stretch;gap:1rem}.chord-stats-bar div{flex-direction:column;align-items:center;display:flex}.toolbar-left{display:none!important}.audio-toolbar{justify-content:center}}@media (width<=550px){.welcome-banner{text-align:center;flex-direction:column;align-items:stretch}.welcome-banner div{flex-direction:column;justify-content:center;align-items:center;display:flex}}@media (width<=500px){.audio-toolbar .bpm-slider{display:none!important}}@media (width<=480px){.bpm-adjust-row{gap:.5rem}.bpm-adjust-row .btn{padding:.4rem .6rem!important;font-size:.8rem!important}.bpm-large-text{min-width:80px;font-size:1.5rem}}