.riff-container {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
            padding-top: var(--sp-xl);
        }

        .session-hero {
            text-align: left;
            padding: var(--sp-lg);
            margin-bottom: var(--sp-lg);
            background: linear-gradient(135deg, rgba(129, 140, 248, 0.14), rgba(16, 185, 129, 0.08));
            border: 1px solid rgba(129, 140, 248, 0.2);
            border-radius: var(--r-lg);
        }

        .session-hero h2 {
            margin-bottom: 0.4rem;
        }

        .micro-win-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: var(--sp-md);
            margin: var(--sp-lg) 0;
        }

        .micro-win-card {
            text-align: left;
            padding: var(--sp-md);
            border-radius: var(--r-md);
            background: var(--bg-glass);
            border: 1px solid var(--border);
        }

        .micro-win-card .badge {
            margin-bottom: var(--sp-sm);
        }

        .warmup-panel {
            text-align: left;
            margin-top: var(--sp-lg);
            padding: var(--sp-lg);
            background: var(--bg-card);
            border-radius: var(--r-lg);
            border: 1px solid var(--border);
        }

        .warmup-list {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: var(--sp-sm);
            margin-top: var(--sp-md);
        }

        .warmup-chip {
            padding: var(--sp-sm);
            border-radius: var(--r-sm);
            background: var(--bg-glass);
            border: 1px solid var(--border);
            font-size: var(--text-sm);
        }

        .session-checklist {
            text-align: left;
            margin-top: var(--sp-lg);
            padding: var(--sp-lg);
            background: var(--bg-card);
            border-radius: var(--r-lg);
            border: 1px solid var(--border);
        }

        .checklist-items {
            display: flex;
            flex-direction: column;
            gap: var(--sp-sm);
            margin-top: var(--sp-md);
        }

        .checklist-item {
            display: flex;
            align-items: flex-start;
            gap: var(--sp-sm);
            padding: var(--sp-sm) var(--sp-md);
            border-radius: var(--r-sm);
            background: var(--bg-glass);
            border: 1px solid var(--border);
        }

        .check-bullet {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            border-radius: 999px;
            border: 2px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: var(--text-sm);
            margin-top: 1px;
        }

        .checklist-item.done .check-bullet {
            background: var(--success);
            border-color: var(--success);
            color: #fff;
        }

        .checklist-item.done {
            border-color: rgba(16, 185, 129, 0.3);
        }

        .coach-callout {
            margin-top: var(--sp-lg);
            padding: var(--sp-md) var(--sp-lg);
            border-radius: var(--r-md);
            background: linear-gradient(135deg, rgba(251, 191, 36, 0.12), rgba(129, 140, 248, 0.08));
            border: 1px solid rgba(251, 191, 36, 0.22);
            text-align: left;
        }

        .riff-visualizer {
            width: 100%;
            height: 160px;
            background: #1a1c23;
            border-radius: var(--r-lg);
            position: relative;
            margin: var(--sp-xl) 0;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
        }

        .fretboard-row {
            position: relative;
            width: 90%;
            height: 60px;
            display: flex;
            align-items: center;
        }

        .fret {
            position: absolute;
            top: 0; bottom: 0; width: 2px;
            background: #4a4d5e;
        }

        .string {
            position: absolute;
            left: 0; right: 0; height: 3px;
            background: #636c80;
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
        }

        .finger-target {
            position: absolute;
            width: 44px; height: 44px;
            border-radius: 50%;
            background: rgba(129, 140, 248, 0.15);
            border: 2px solid var(--accent);
            display: flex; align-items: center; justify-content: center;
            font-family: inherit; font-size: inherit;
            font-weight: 800; color: var(--text-accent);
            cursor: pointer; z-index: 10;
            transition: all 0.1s;
            transform: translate(-50%, 0);
            padding: 0;
        }

        .finger-target:hover { transform: translate(-50%, 0) scale(1.1); background: var(--accent-fill); color: white; }
        .finger-target:focus-visible, .piano-key:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        /* Piano Styles */
        .piano-row { display: flex; gap: 4px; }
        .piano-key { width: 50px; height: 120px; background: white; border-radius: 0 0 6px 6px; position: relative; border: 1px solid #ccc; cursor: pointer; transition: background 0.1s; font-family: inherit; font-size: inherit; padding: 0; }
        .piano-key:active { background: #eee; }
        .piano-target { position: absolute; bottom: 15px; left: 50%; transform: translateX(-50%); width: 24px; height: 24px; border-radius: 50%; border: 2px solid var(--accent); }

        .tab-box { display: flex; gap: var(--sp-sm); justify-content: center; margin-top: var(--sp-lg); flex-wrap: wrap; }
        .tab-note { width: 44px; height: 54px; background: var(--bg-card); border: 2px solid var(--border); border-radius: var(--r-sm); display: flex; align-items: center; justify-content: center; font-family: 'JetBrains Mono'; font-weight: 800; font-size: var(--text-xl); transition: all 0.2s; }
        .tab-note.active { background: var(--accent-glow); border-color: var(--accent); color: var(--text-accent); transform: translateY(-4px); box-shadow: 0 8px 16px rgba(129,140,248,0.2); }
        .tab-note.played { background: var(--success-soft); border-color: var(--success); color: var(--success-text); }
        .tab-note.preview-highlight { background: var(--accent); color: white; transform: scale(1.15) translateY(-4px); box-shadow: 0 0 16px var(--accent); }

        .celeb-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.95); z-index: 1000; display: none; align-items: center; justify-content: center; backdrop-filter: blur(8px); }
        .celeb-content { text-align: center; color: white; }

        /* Listen Mode feedback */
        .pitch-detected { font-family: 'JetBrains Mono', monospace; font-size: var(--text-lg); }
        .pitch-detected.correct { color: var(--success-text); }
        .pitch-detected.wrong { color: var(--error-text); }
        .pitch-detected.near { color: var(--warning-text); }
        .feedback-text { font-size: var(--text-sm); }
        .feedback-text.correct { color: var(--success-text); }
        .feedback-text.near { color: var(--warning-text); }
        .feedback-text.wrong { color: var(--error-text); }

        @media (max-width: 700px) {
            .micro-win-grid,
            .warmup-list {
                grid-template-columns: 1fr;
            }

            .session-hero,
            .warmup-panel,
            .session-checklist,
            .coach-callout {
                text-align: left;
            }
        }

        .detected-note { font-size: var(--text-2xl); margin-bottom: 0.3rem; }
        .listen-feedback { font-size: var(--text-base); color: var(--text-muted); }
        .downstroke-pattern { font-family: 'JetBrains Mono', monospace; font-size: var(--text-2xl); letter-spacing: 0.5rem; margin: var(--sp-sm) 0; }
        .celeb-title { font-size: var(--text-7xl); margin-bottom: 1rem; }
        .celeb-sub { font-size: var(--text-2xl); opacity: 0.9; }

        .piano-label { position: absolute; bottom: 5px; left: 50%; transform: translateX(-50%); font-size: 10px; color: #999; font-weight: bold; }