@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

        * { box-sizing: border-box; margin: 0; padding: 0; }

        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            background: #0d0d14;
            color: #e0e0ec;
            min-height: 100vh;
        }

        /* ===== NAV ===== */
        .tool-nav {
            background: rgba(13,13,20,0.9);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 14px 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid rgba(255,255,255,0.07);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .tool-nav a {
            color: #a5b4fc;
            text-decoration: none;
            font-weight: 500;
            font-size: 13px;
            letter-spacing: 0.3px;
            transition: color 0.2s;
        }
        .tool-nav a:hover { color: #fff; }
        .tool-nav .nav-title {
            color: #e0e0ec;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        /* ===== LAYOUT ===== */
        .main-content { padding: 36px 20px; }
        .container { max-width: 860px; margin: 0 auto; }

        h1 {
            text-align: center;
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 36px;
            letter-spacing: -0.5px;
        }

        /* ===== CHORD SELECTOR ===== */
        .chord-selector {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
            margin-bottom: 28px;
        }

        .chord-group {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.08);
            padding: 16px 18px;
            border-radius: 16px;
            text-align: center;
        }

        .chord-group h3 {
            margin: 0 0 12px 0;
            color: #a5b4fc;
            font-size: 11px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1.2px;
        }

        .chord-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            justify-content: center;
        }

        .chord-btn {
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.1);
            color: #c0c0d4;
            padding: 8px 13px;
            border-radius: 8px;
            cursor: pointer;
            font-family: inherit;
            font-size: 13px;
            font-weight: 500;
            transition: all 0.18s ease;
        }

        .chord-btn:hover {
            background: rgba(165,180,252,0.12);
            border-color: rgba(165,180,252,0.35);
            color: #fff;
            transform: translateY(-1px);
        }

        .chord-btn.active {
            background: #5b5ff0;
            border-color: #5b5ff0;
            color: #fff;
            box-shadow: 0 0 16px rgba(91,95,240,0.4);
        }

        /* ===== CHORD DISPLAY ===== */
        .chord-display {
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: 20px;
            padding: 32px 24px;
            text-align: center;
        }

        .chord-name {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 22px;
            letter-spacing: -1px;
        }

        /* ===== FRETBOARD ===== */
        .fretboard-container {
            display: inline-block;
            background: linear-gradient(160deg, #271606 0%, #1a0f04 50%, #271606 100%);
            padding: 22px 30px;
            border-radius: 16px;
            border: 3px solid #6b3e1a;
            box-shadow:
                inset 0 1px 0 rgba(255,200,100,0.08),
                inset 0 -1px 0 rgba(0,0,0,0.6),
                0 12px 40px rgba(0,0,0,0.7),
                0 0 0 1px rgba(255,255,255,0.04);
        }

        .string-names {
            display: grid;
            grid-template-columns: 40px repeat(6, 44px);
            margin-bottom: 8px;
        }

        .string-names span {
            text-align: center;
            font-weight: 600;
            color: #c8a050;
            font-size: 12px;
            letter-spacing: 0.5px;
        }

        .open-mute-row {
            display: grid;
            grid-template-columns: 40px repeat(6, 44px);
            margin-bottom: 4px;
            height: 28px;
        }

        .open-mute-row span {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: bold;
        }

        .open-mute-row .open { color: #34d399; }
        .open-mute-row .mute { color: #f87171; opacity: 0.85; }

        .nut {
            display: grid;
            grid-template-columns: 40px repeat(6, 44px);
            height: 8px;
            margin-bottom: 2px;
        }

        .nut .nut-bar {
            grid-column: 2 / 8;
            background: linear-gradient(180deg, #fffaf0 0%, #e8dfc0 40%, #c8b880 60%, #e8dfc0 100%);
            border-radius: 3px;
            box-shadow: 0 2px 6px rgba(0,0,0,0.6);
        }

        .fret-row {
            display: grid;
            grid-template-columns: 40px repeat(6, 44px);
            height: 52px;
            position: relative;
        }

        .fret-number {
            display: flex;
            align-items: center;
            justify-content: center;
            color: #4a4a60;
            font-size: 12px;
            font-weight: 600;
        }

        .string-cell {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            border-bottom: 1px solid rgba(120,80,40,0.4);
        }

        .string-cell::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 2px;
            transform: translateX(-50%);
            background: linear-gradient(180deg, #9090a8 0%, #d8d8e8 40%, #d8d8e8 60%, #9090a8 100%);
            box-shadow: 0 0 3px rgba(200,200,220,0.15);
        }

        .string-cell.s6::before { width: 4.5px; background: linear-gradient(180deg, #b07018 0%, #e0a030 50%, #b07018 100%); box-shadow: 0 0 5px rgba(200,150,30,0.25); }
        .string-cell.s5::before { width: 3.5px; background: linear-gradient(180deg, #b07018 0%, #e0a030 50%, #b07018 100%); }
        .string-cell.s4::before { width: 3px;   background: linear-gradient(180deg, #c08828 0%, #d8a040 50%, #c08828 100%); }
        .string-cell.s3::before { width: 2px; }
        .string-cell.s2::before { width: 1.5px; }
        .string-cell.s1::before { width: 1px; }

        @keyframes dotPop {
            0%   { transform: scale(0) rotate(-45deg); opacity: 0; }
            70%  { transform: scale(1.12) rotate(3deg); opacity: 1; }
            100% { transform: scale(1) rotate(0deg); opacity: 1; }
        }

        .finger-dot {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: linear-gradient(145deg, #6366f1 0%, #4338ca 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 13px;
            z-index: 10;
            box-shadow:
                0 4px 14px rgba(99,102,241,0.55),
                inset 0 1px 2px rgba(255,255,255,0.25);
            border: 2px solid rgba(255,255,255,0.35);
            animation: dotPop 0.28s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
        }

        .finger-dot.barre {
            width: 100%;
            border-radius: 17px;
            position: absolute;
            left: 0;
            right: 0;
        }

        .fret-marker { position: absolute; right: -25px; color: #3a3a50; font-size: 12px; }

        .fret-row.has-marker::after {
            content: '●';
            position: absolute;
            right: -28px;
            color: #2a2a3a;
            font-size: 9px;
        }

        .chord-info {
            margin-top: 18px;
            padding: 16px 20px;
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(255,255,255,0.07);
            border-radius: 12px;
            text-align: left;
        }

        .chord-info h4 {
            color: #a5b4fc;
            margin: 0 0 10px 0;
            font-size: 11px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .finger-guide { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 10px; }
        .finger-item { display: flex; align-items: center; gap: 6px; font-size: 13px; color: #a0a0b8; }

        /* ===== LEGEND ===== */
        .legend {
            margin-top: 20px;
            padding: 14px 18px;
            background: rgba(255,255,255,0.02);
            border: 1px solid rgba(255,255,255,0.06);
            border-radius: 12px;
            font-size: 13px;
            color: #70708a;
        }

        .legend-title {
            color: #a5b4fc;
            margin-bottom: 10px;
            font-size: 11px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .legend-items { display: flex; flex-wrap: wrap; gap: 14px; }

        /* ===== PATTERN SECTION ===== */
        .pattern-section {
            margin-top: 48px;
            background: rgba(255,255,255,0.02);
            border: 1px solid rgba(255,255,255,0.07);
            border-radius: 24px;
            padding: 32px;
        }

        .pattern-section h2 {
            text-align: center;
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 22px 0;
            letter-spacing: -0.3px;
        }

        .pattern-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 4px;
            justify-content: center;
            margin-bottom: 28px;
            background: rgba(0,0,0,0.35);
            padding: 5px;
            border-radius: 14px;
            border: 1px solid rgba(255,255,255,0.06);
        }

        .pattern-tab {
            background: transparent;
            border: none;
            color: #70708a;
            padding: 8px 16px;
            border-radius: 9px;
            cursor: pointer;
            font-family: inherit;
            font-size: 13px;
            font-weight: 500;
            transition: all 0.2s;
            white-space: nowrap;
        }

        .pattern-tab:hover { color: #c0c0d8; background: rgba(255,255,255,0.06); }

        .pattern-tab.active {
            background: #5b5ff0;
            color: #fff;
            box-shadow: 0 2px 10px rgba(91,95,240,0.4);
        }

        @keyframes tabFadeIn {
            from { opacity: 0; transform: translateY(5px); }
            to   { opacity: 1; transform: translateY(0); }
        }

        .tab-content { display: none; }
        .tab-content.active { display: block; animation: tabFadeIn 0.22s ease; }

        .tab-content h3 {
            color: #fff;
            margin: 0 0 8px 0;
            font-size: 16px;
            font-weight: 600;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .tab-content p {
            color: #8888a0;
            margin: 0 0 18px 0;
            line-height: 1.65;
            font-size: 14px;
        }

        .pattern-box {
            background: rgba(255,255,255,0.03);
            border-radius: 14px;
            padding: 20px 22px;
            margin-bottom: 18px;
            border: 1px solid rgba(255,255,255,0.07);
            border-left: 3px solid #5b5ff0;
        }

        .pattern-box h4 {
            color: #a5b4fc;
            margin: 0 0 14px 0;
            font-size: 15px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .pattern-box h4::before { content: '▸'; color: #c8a050; }

        .pattern-diagram {
            background: rgba(0,0,0,0.45);
            padding: 16px 18px;
            border-radius: 10px;
            overflow-x: auto;
            font-family: 'Courier New', monospace;
            font-size: 13px;
            line-height: 1.8;
            color: #a8a8c0;
            margin: 0;
            border: 1px solid rgba(255,255,255,0.05);
        }

        /* ===== MINI FRETBOARD ===== */
        .mini-fretboard-container {
            display: inline-flex;
            flex-direction: column;
            align-items: center;
            margin: 10px;
            vertical-align: top;
        }

        .mini-fretboard-title {
            font-size: 12px;
            color: #c8a050;
            margin-bottom: 6px;
            font-weight: 600;
        }

        .mini-fretboard-subtitle {
            font-size: 11px;
            color: #50506a;
            margin-top: 4px;
        }

        .mini-fretboard {
            display: grid;
            grid-template-columns: 24px repeat(4, 36px);
            background: linear-gradient(160deg, #271606 0%, #1a0f04 100%);
            padding: 10px;
            border-radius: 8px;
            border: 2px solid #6b3e1a;
            box-shadow: 0 4px 14px rgba(0,0,0,0.5);
        }

        .mini-fretboard .string-label {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 10px;
            color: #c8a050;
            font-weight: 600;
        }

        .mini-fretboard .mini-nut {
            height: 5px;
            background: linear-gradient(180deg, #fffaf0 0%, #d4c896 100%);
            border-radius: 2px;
            grid-column: 2 / 6;
        }

        .mini-fretboard .mini-cell {
            width: 36px;
            height: 30px;
            border-bottom: 1px solid rgba(120,80,40,0.4);
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .mini-fretboard .mini-cell::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            transform: translateX(-50%);
            background: linear-gradient(180deg, #9090a8 0%, #d8d8e8 50%, #9090a8 100%);
        }

        .mini-fretboard .mini-cell.thick::before {
            width: 3px;
            background: linear-gradient(180deg, #b07018 0%, #e0a030 50%, #b07018 100%);
        }

        .mini-fretboard .mini-dot {
            width: 22px;
            height: 22px;
            background: linear-gradient(145deg, #6366f1 0%, #4338ca 100%);
            border-radius: 50%;
            z-index: 10;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 10px;
            font-weight: 700;
            box-shadow: 0 2px 8px rgba(99,102,241,0.45);
            border: 1.5px solid rgba(255,255,255,0.3);
        }

        .mini-fretboard .mini-dot.root {
            background: linear-gradient(145deg, #c8a050 0%, #a07830 100%);
            box-shadow: 0 2px 8px rgba(200,160,60,0.45);
        }

        .mini-fretboard .mini-open { color: #34d399; font-size: 14px; font-weight: bold; }

        .mini-fretboard .fret-num {
            grid-column: 2 / 6;
            display: flex;
            justify-content: space-around;
            font-size: 10px;
            color: #38385a;
            padding-top: 4px;
        }

        .triad-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin: 20px 0;
        }

        .triad-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 18px;
            margin: 20px 0;
            flex-wrap: wrap;
        }

        .triad-vs .vs-arrow { color: #c8a050; font-size: 22px; }

        /* ===== CHORD FLOW ===== */
        .chord-flow {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            margin: 16px 0;
        }

        .chord-flow .flow-chord {
            background: #5b5ff0;
            color: #fff;
            padding: 9px 16px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 15px;
            box-shadow: 0 3px 12px rgba(91,95,240,0.35);
            letter-spacing: 0.3px;
        }

        .chord-flow .flow-chord.minor {
            background: #7c3aed;
            box-shadow: 0 3px 12px rgba(124,58,237,0.35);
        }

        .chord-flow .flow-chord.seventh {
            background: #b45309;
            box-shadow: 0 3px 12px rgba(180,83,9,0.35);
        }

        .chord-flow .flow-arrow { color: #c8a050; font-size: 18px; font-weight: bold; }

        /* ===== INFO TABLE ===== */
        .info-table {
            width: 100%;
            border-collapse: collapse;
            margin: 14px 0;
            font-size: 13px;
        }

        .info-table th {
            background: rgba(91,95,240,0.18);
            color: #a5b4fc;
            padding: 11px 14px;
            text-align: center;
            border: 1px solid rgba(255,255,255,0.06);
            font-weight: 600;
            font-size: 12px;
            letter-spacing: 0.5px;
        }

        .info-table td {
            padding: 9px 12px;
            text-align: center;
            border: 1px solid rgba(255,255,255,0.05);
            background: rgba(0,0,0,0.2);
            color: #b8b8cc;
        }

        .info-table tr:hover td {
            background: rgba(91,95,240,0.1);
            color: #e0e0f0;
        }

        /* ===== BADGES & HIGHLIGHTS ===== */
        .key-badge {
            display: inline-block;
            background: rgba(22,101,52,0.5);
            color: #86efac;
            padding: 3px 10px;
            border-radius: 20px;
            font-size: 11px;
            font-weight: 600;
            margin-right: 8px;
            border: 1px solid rgba(134,239,172,0.25);
        }

        .highlight       { color: #c8a050; font-weight: 600; }
        .highlight-red   { color: #f87171; font-weight: 600; }
        .highlight-green { color: #34d399; font-weight: 600; }
        .highlight-blue  { color: #a5b4fc; font-weight: 600; }

        /* ===== STEP LIST ===== */
        .step-list { list-style: none; padding: 0; margin: 14px 0; }

        .step-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 8px;
            padding: 13px 16px;
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(255,255,255,0.06);
            border-radius: 10px;
            line-height: 1.55;
            font-size: 14px;
            color: #b0b0c8;
        }

        .step-list .step-num {
            background: #5b5ff0;
            color: #fff;
            width: 24px;
            height: 24px;
            border-radius: 7px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 11px;
            flex-shrink: 0;
        }

        .step-list .step-content { flex: 1; }

        /* ===== TIP BOX ===== */
        .tip-box {
            background: rgba(200,160,50,0.07);
            border: 1px solid rgba(200,160,50,0.28);
            border-radius: 12px;
            padding: 16px 20px;
            margin-top: 18px;
            color: #c8a050;
            position: relative;
            font-size: 14px;
            line-height: 1.65;
        }

        .tip-box::before {
            content: '💡';
            position: absolute;
            top: -12px;
            left: 18px;
            background: #0d0d14;
            padding: 0 6px;
            font-size: 16px;
        }

        .tip-box b { color: #e0e0ec; }

        /* ===== COMPARE BOX ===== */
        .compare-box {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            gap: 12px;
            margin: 14px 0;
            padding: 16px;
            background: rgba(0,0,0,0.2);
            border: 1px solid rgba(255,255,255,0.06);
            border-radius: 12px;
        }

        .compare-box .compare-item {
            text-align: center;
            padding: 14px;
            background: rgba(255,255,255,0.04);
            border-radius: 8px;
            font-size: 14px;
        }

        .compare-box .compare-arrow { font-size: 22px; color: #c8a050; }

        /* ===== CAGED BUTTONS ===== */
        .caged-selector {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
            margin: 20px 0;
        }

        .caged-btn {
            background: rgba(255,255,255,0.05);
            border: 2px solid rgba(255,255,255,0.1);
            color: #c0c0d8;
            padding: 14px 22px;
            border-radius: 12px;
            cursor: pointer;
            font-family: inherit;
            font-size: 18px;
            font-weight: 700;
            transition: all 0.22s cubic-bezier(0.4,0,0.2,1);
            min-width: 76px;
            text-align: center;
            letter-spacing: 0.5px;
        }

        .caged-btn:hover {
            transform: translateY(-2px);
            background: rgba(91,95,240,0.14);
            border-color: rgba(91,95,240,0.4);
            box-shadow: 0 6px 20px rgba(0,0,0,0.3);
            color: #fff;
        }

        .caged-btn.active {
            background: linear-gradient(145deg, #5b5ff0 0%, #4338ca 100%);
            border-color: #5b5ff0;
            color: #fff;
            box-shadow: 0 0 20px rgba(91,95,240,0.45);
            transform: translateY(-1px);
        }

        .caged-btn .btn-label {
            display: block;
            font-size: 11px;
            color: #50506a;
            margin-top: 4px;
            font-weight: 400;
        }

        .caged-btn.active .btn-label { color: rgba(255,255,255,0.65); }

        .caged-display {
            margin-top: 22px;
            padding: 24px;
            background: rgba(0,0,0,0.2);
            border: 1px solid rgba(255,255,255,0.07);
            border-radius: 16px;
            text-align: center;
        }

        .caged-display-title {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        /* ===== CAGED FRETBOARD ===== */
        .caged-fretboard {
            display: inline-grid;
            grid-template-columns: 30px repeat(6, 50px);
            background: linear-gradient(160deg, #271606 0%, #1a0f04 50%, #271606 100%);
            padding: 14px 18px;
            border-radius: 14px;
            border: 3px solid #6b3e1a;
            box-shadow:
                inset 0 1px 0 rgba(255,200,100,0.06),
                0 8px 30px rgba(0,0,0,0.6);
        }

        .caged-fretboard .cf-label {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            color: #c8a050;
            font-weight: 600;
        }

        .caged-fretboard .cf-open-row { display: contents; }

        .caged-fretboard .cf-open {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 28px;
            font-size: 17px;
            font-weight: bold;
        }

        .caged-fretboard .cf-open.open { color: #34d399; }
        .caged-fretboard .cf-open.mute { color: #f87171; opacity: 0.85; }

        .caged-fretboard .cf-nut {
            grid-column: 2 / 8;
            height: 7px;
            background: linear-gradient(180deg, #fffaf0 0%, #e8dfc0 40%, #c8b880 60%, #e8dfc0 100%);
            border-radius: 3px;
            margin: 4px 0;
            box-shadow: 0 2px 4px rgba(0,0,0,0.5);
        }

        .caged-fretboard .cf-fret-row { display: contents; }

        .caged-fretboard .cf-fret-num {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            color: #4a4a60;
            font-weight: 600;
        }

        .caged-fretboard .cf-cell {
            width: 50px;
            height: 44px;
            border-bottom: 1px solid rgba(120,80,40,0.4);
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .caged-fretboard .cf-cell::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            transform: translateX(-50%);
            background: linear-gradient(180deg, #9090a8 0%, #d8d8e8 50%, #9090a8 100%);
        }

        .caged-fretboard .cf-cell.s6::before,
        .caged-fretboard .cf-cell.s5::before {
            width: 3.5px;
            background: linear-gradient(180deg, #b07018 0%, #e0a030 50%, #b07018 100%);
        }

        .caged-fretboard .cf-dot {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(145deg, #6366f1 0%, #4338ca 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            z-index: 10;
            box-shadow: 0 3px 12px rgba(99,102,241,0.45);
            border: 2px solid rgba(255,255,255,0.3);
        }

        .caged-fretboard .cf-dot.root {
            background: linear-gradient(145deg, #c8a050 0%, #a07830 100%);
            box-shadow: 0 3px 12px rgba(200,160,60,0.45);
        }

        .caged-fretboard .cf-barre {
            position: absolute;
            left: 4px;
            right: 4px;
            height: 28px;
            background: linear-gradient(145deg, #6366f1 0%, #4338ca 100%);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            z-index: 5;
            box-shadow: 0 3px 10px rgba(99,102,241,0.4);
            border: 2px solid rgba(255,255,255,0.25);
        }

        /* ===== CAGED INFO ===== */
        .caged-info {
            margin-top: 16px;
            text-align: left;
            background: rgba(255,255,255,0.03);
            padding: 14px 18px;
            border-radius: 10px;
            border: 1px solid rgba(255,255,255,0.07);
        }

        .caged-info p { margin: 7px 0; color: #8888a0; font-size: 13px; line-height: 1.55; }

        .caged-info .info-label {
            color: #a5b4fc;
            font-weight: 600;
            margin-right: 8px;
        }

        /* ===== CAGED POSITION ROW ===== */
        .caged-position-row {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 18px;
            flex-wrap: wrap;
        }

        .caged-position-item {
            background: rgba(255,255,255,0.04);
            padding: 10px 16px;
            border-radius: 10px;
            text-align: center;
            cursor: pointer;
            transition: all 0.2s;
            border: 2px solid rgba(255,255,255,0.08);
        }

        .caged-position-item:hover {
            border-color: rgba(91,95,240,0.4);
            background: rgba(91,95,240,0.1);
        }

        .caged-position-item.active {
            border-color: #5b5ff0;
            background: rgba(91,95,240,0.15);
            box-shadow: 0 0 12px rgba(91,95,240,0.25);
        }

        .caged-position-item .pos-form {
            font-weight: 700;
            color: #a5b4fc;
            font-size: 16px;
        }

        .caged-position-item .pos-fret {
            font-size: 11px;
            color: #50506a;
            margin-top: 3px;
        }

        /* ===== TRANSFORM CONTENT ===== */
        .transform-content { display: none; }
        .transform-content.active { display: block; }

        /* ===== MOBILE ===== */
        @media (max-width: 600px) {
            .main-content { padding: 20px 14px; }
            h1 { font-size: 21px; margin-bottom: 24px; }

            .fretboard-container { padding: 16px 18px; }

            .string-names { grid-template-columns: 30px repeat(6, 36px); }
            .string-names span { font-size: 11px; }

            .open-mute-row { grid-template-columns: 30px repeat(6, 36px); height: 24px; }
            .open-mute-row span { font-size: 15px; }

            .nut { grid-template-columns: 30px repeat(6, 36px); }

            .fret-row { grid-template-columns: 30px repeat(6, 36px); height: 44px; }
            .fret-number { font-size: 11px; }

            .finger-dot { width: 28px; height: 28px; font-size: 12px; }

            .chord-btn { padding: 7px 11px; font-size: 12px; }

            .pattern-section { padding: 20px 14px; }
            .pattern-tab { padding: 7px 11px; font-size: 12px; }
            .pattern-diagram { font-size: 11px; }

            .mini-fretboard { grid-template-columns: 20px repeat(4, 30px); padding: 8px; }
            .mini-fretboard .mini-cell { width: 30px; height: 26px; }
            .mini-fretboard .mini-dot { width: 20px; height: 20px; font-size: 10px; }
            .triad-group { gap: 8px; }

            .chord-flow .flow-chord { padding: 8px 12px; font-size: 13px; }

            .compare-box { grid-template-columns: 1fr; gap: 8px; }
            .compare-box .compare-arrow { transform: rotate(90deg); }

            .caged-btn { padding: 12px 16px; font-size: 15px; min-width: 60px; }
            .caged-fretboard { grid-template-columns: 25px repeat(6, 40px); }
            .caged-fretboard .cf-cell { width: 40px; height: 36px; }
            .caged-fretboard .cf-dot { width: 26px; height: 26px; font-size: 11px; }
        }

        /* ===== SONG SEARCH ===== */
        .song-search-bar {
            position: relative;
            margin-bottom: 20px;
        }
        .song-search-bar::before {
            content: '🎵';
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 15px;
            pointer-events: none;
            z-index: 1;
        }
        .song-search-bar input {
            width: 100%;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: 12px;
            padding: 13px 18px 13px 44px;
            color: #e0e0ec;
            font-family: inherit;
            font-size: 15px;
            outline: none;
            transition: all 0.2s;
        }
        .song-search-bar input::placeholder { color: #50506a; }
        .song-search-bar input:focus {
            border-color: #5b5ff0;
            background: rgba(255,255,255,0.08);
            box-shadow: 0 0 0 3px rgba(91,95,240,0.18);
        }
        .song-filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 20px;
        }
        .filter-tag {
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            color: #70708a;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.18s;
        }
        .filter-tag:hover { color: #c0c0d8; background: rgba(255,255,255,0.08); }
        .filter-tag.active {
            background: #5b5ff0;
            border-color: #5b5ff0;
            color: #fff;
        }
        .song-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 14px;
        }
        .song-card {
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(255,255,255,0.07);
            border-radius: 16px;
            padding: 18px 20px;
            transition: border-color 0.2s, background 0.2s;
            cursor: default;
        }
        .song-card:hover {
            border-color: rgba(91,95,240,0.35);
            background: rgba(91,95,240,0.05);
        }
        .song-card-header {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 10px;
            margin-bottom: 12px;
        }
        .song-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
        }
        .song-artist {
            font-size: 12px;
            color: #60607a;
            margin-top: 3px;
        }
        .song-difficulty {
            flex-shrink: 0;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 9px;
            border-radius: 20px;
        }
        .diff-초급   { background: rgba(52,211,153,0.15); color: #34d399; border: 1px solid rgba(52,211,153,0.25); }
        .diff-초중급 { background: rgba(251,191,36,0.12); color: #fbbf24; border: 1px solid rgba(251,191,36,0.25); }
        .diff-중급   { background: rgba(248,113,113,0.12); color: #f87171; border: 1px solid rgba(248,113,113,0.25); }
        .diff-고급   { background: rgba(167,139,250,0.12); color: #a78bfa; border: 1px solid rgba(167,139,250,0.25); }
        .song-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 12px;
            font-size: 12px;
        }
        .song-meta-item {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: 6px;
            padding: 3px 9px;
            color: #9090a8;
        }
        .song-meta-item b { color: #c8a050; }
        .song-chords {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 5px;
            margin-bottom: 12px;
        }
        .song-chord-btn {
            background: rgba(91,95,240,0.12);
            border: 1px solid rgba(91,95,240,0.3);
            color: #a5b4fc;
            padding: 5px 11px;
            border-radius: 7px;
            font-size: 13px;
            font-weight: 700;
            cursor: pointer;
            font-family: inherit;
            transition: all 0.18s;
        }
        .song-chord-btn:hover {
            background: #5b5ff0;
            border-color: #5b5ff0;
            color: #fff;
            transform: translateY(-1px);
        }
        .song-chord-arrow {
            color: #40405a;
            font-size: 12px;
        }
        .song-tip {
            font-size: 12px;
            color: #60607a;
            line-height: 1.55;
            padding-top: 10px;
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        .song-tip b { color: #c8a050; }
        .song-no-result {
            text-align: center;
            padding: 40px 20px;
            color: #40405a;
            font-size: 14px;
            grid-column: 1 / -1;
        }
        @media (max-width: 600px) {
            .song-grid { grid-template-columns: 1fr; }
        }

        /* ===== CHORD SEARCH ===== */
        .chord-search {
            position: relative;
            margin-bottom: 28px;
        }

        .chord-search-wrap {
            position: relative;
        }

        .chord-search-wrap::before {
            content: '🔍';
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 16px;
            pointer-events: none;
            z-index: 1;
        }

        .chord-search input {
            width: 100%;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: 14px;
            padding: 14px 18px 14px 46px;
            color: #e0e0ec;
            font-family: inherit;
            font-size: 15px;
            outline: none;
            transition: all 0.2s;
        }

        .chord-search input::placeholder { color: #50506a; }

        .chord-search input:focus {
            border-color: #5b5ff0;
            background: rgba(255,255,255,0.08);
            box-shadow: 0 0 0 3px rgba(91,95,240,0.18);
        }

        .search-suggestions {
            display: none;
            position: absolute;
            top: calc(100% + 6px);
            left: 0;
            right: 0;
            background: #14141f;
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: 12px;
            overflow: hidden;
            z-index: 200;
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
        }

        .search-suggestions.visible { display: block; }

        .suggestion-item {
            padding: 11px 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: background 0.12s;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }

        .suggestion-item:last-child { border-bottom: none; }
        .suggestion-item:hover, .suggestion-item.focused { background: rgba(91,95,240,0.18); }

        .suggestion-name {
            font-weight: 700;
            font-size: 15px;
            color: #fff;
            min-width: 56px;
        }

        .suggestion-desc {
            font-size: 12px;
            color: #60607a;
        }

        .suggestion-tag {
            margin-left: auto;
            font-size: 11px;
            color: #5b5ff0;
            background: rgba(91,95,240,0.15);
            padding: 2px 8px;
            border-radius: 6px;
            font-weight: 600;
        }

        .search-not-found {
            padding: 16px;
            color: #50506a;
            font-size: 13px;
            text-align: center;
        }