/* ═══ GERARMONÍA — Component Styles ═══ */

/* ─── Home ─────────────────────────────────────────── */
.home-view { display: flex; flex-direction: column; gap: 32px; }
.hero-section { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 40px 32px; background: var(--gradient-card); border: 1px solid var(--border-subtle); border-radius: var(--border-radius-lg); position: relative; overflow: hidden; }
.hero-section::before { content: ''; position: absolute; top: -50%; right: -20%; width: 400px; height: 400px; background: radial-gradient(circle, rgba(108,92,231,0.15) 0%, transparent 70%); pointer-events: none; }
.hero-title { font-family: var(--font-display); font-size: 1.8rem; font-weight: 800; line-height: 1.2; }
.hero-accent { background: var(--gradient-hero); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-subtitle { color: var(--text-secondary); margin-top: 8px; font-size: 1rem; }
.hero-cta { margin-top: 20px; padding: 12px 28px; background: var(--gradient-hero); color: white; border: none; border-radius: 30px; font-size: 0.95rem; font-weight: 600; cursor: pointer; transition: var(--transition-normal); font-family: var(--font-main); }
.hero-cta:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow); }
.hero-visual { flex-shrink: 0; }
.hero-chord-display { background: rgba(0,0,0,0.3); border: 1px solid var(--border-medium); border-radius: var(--border-radius); padding: 20px 28px; text-align: center; }
.hero-chord-name { display: block; font-family: var(--font-display); font-size: 2rem; font-weight: 800; color: var(--text-accent); }
.hero-chord-notes { display: flex; gap: 12px; justify-content: center; margin-top: 8px; font-weight: 700; font-size: 0.9rem; }

.home-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.stat-card { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 16px 8px; background: var(--gradient-card); border: 1px solid var(--border-subtle); border-radius: var(--border-radius); transition: var(--transition-fast); }
.stat-card:hover { border-color: var(--border-active); }
.stat-icon { font-size: 1.5rem; }
.stat-value { font-size: 1.3rem; font-weight: 800; font-family: var(--font-display); }
.stat-name { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }

.home-section-title { font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; margin-bottom: 12px; }
.module-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.module-card { padding: 20px; background: var(--gradient-card); border: 1px solid var(--border-subtle); border-radius: var(--border-radius); text-align: left; cursor: pointer; transition: var(--transition-normal); font-family: var(--font-main); color: var(--text-primary); }
.module-card:hover { border-color: var(--accent-primary); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.module-icon { font-size: 2rem; display: block; margin-bottom: 8px; }
.module-card h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 4px; }
.module-card p { font-size: 0.8rem; color: var(--text-secondary); }

@media (max-width: 768px) {
    .hero-section { flex-direction: column; text-align: center; padding: 24px 16px; }
    .hero-title { font-size: 1.4rem; }
    .home-stats { grid-template-columns: repeat(2, 1fr); }
    .module-grid { grid-template-columns: 1fr 1fr; }
}

/* ─── Fretboard View ───────────────────────────────── */
.fretboard-view { display: flex; flex-direction: column; gap: 16px; }
.fb-controls { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-start; }
.fb-control-group { display: flex; flex-direction: column; gap: 6px; }
.fb-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); font-weight: 600; }
.fb-note-selector { display: flex; flex-wrap: wrap; gap: 4px; }
.fb-root-btn { padding: 6px 10px; background: var(--bg-input); border: 1px solid var(--border-subtle); border-radius: 6px; color: var(--text-secondary); font-size: 0.8rem; font-weight: 600; cursor: pointer; transition: var(--transition-fast); font-family: var(--font-main); min-width: 36px; }
.fb-root-btn:hover { border-color: var(--accent-primary); color: var(--text-primary); }
.fb-root-btn.active { background: var(--accent-primary); color: white; border-color: var(--accent-primary); }
.fb-mode-selector { display: flex; gap: 4px; }
.fb-mode-btn { padding: 6px 14px; background: var(--bg-input); border: 1px solid var(--border-subtle); border-radius: 6px; color: var(--text-secondary); font-size: 0.8rem; font-weight: 500; cursor: pointer; transition: var(--transition-fast); font-family: var(--font-main); }
.fb-mode-btn.active { background: var(--accent-primary); color: white; border-color: var(--accent-primary); }
.fb-select { padding: 8px 12px; background: var(--bg-input); border: 1px solid var(--border-subtle); border-radius: 6px; color: var(--text-primary); font-size: 0.85rem; font-family: var(--font-main); outline: none; min-width: 160px; }
.fb-container { overflow-x: auto; -webkit-overflow-scrolling: touch; padding: 8px 0; }
.fretboard-svg { width: 100%; min-width: 700px; height: auto; }
.fret-number { fill: var(--text-muted); font-size: 10px; font-family: var(--font-main); }
.tuning-label { fill: var(--text-secondary); font-size: 12px; font-weight: 700; font-family: var(--font-main); }
.note-label { fill: #0a0e1a; font-weight: 700; font-family: var(--font-main); pointer-events: none; }
.note-dot.active { cursor: pointer; }
.note-dot.active:hover circle { opacity: 0.85; }
.fb-legend { padding: 8px 0; }
.legend-header { font-size: 0.85rem; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.legend-pills { display: flex; flex-wrap: wrap; gap: 6px; }
.legend-pill { padding: 4px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; border: 1px solid; white-space: nowrap; }

/* ─── Chord Builder ────────────────────────────────── */
.chord-builder-panel { display: flex; flex-direction: column; gap: 20px; }
.cb-section { display: flex; flex-direction: column; gap: 8px; }
.cb-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); font-weight: 600; }
.cb-note-grid { display: flex; flex-wrap: wrap; gap: 4px; }
.cb-note-btn { padding: 8px 12px; background: var(--bg-input); border: 1px solid var(--border-subtle); border-radius: 8px; color: var(--text-secondary); font-size: 0.85rem; font-weight: 600; cursor: pointer; transition: var(--transition-fast); font-family: var(--font-main); min-width: 40px; }
.cb-note-btn:hover { border-color: var(--accent-warm); color: var(--text-primary); }
.cb-note-btn.active { background: rgba(255,215,0,0.15); color: var(--accent-warm); border-color: var(--accent-warm); }
.cb-type-grid { display: flex; flex-wrap: wrap; gap: 4px; }
.cb-type-btn { padding: 6px 12px; background: var(--bg-input); border: 1px solid var(--border-subtle); border-radius: 8px; color: var(--text-secondary); font-size: 0.8rem; font-weight: 500; cursor: pointer; transition: var(--transition-fast); font-family: var(--font-main); }
.cb-type-btn:hover { border-color: var(--accent-secondary); }
.cb-type-btn.active { background: rgba(0,206,201,0.15); color: var(--accent-secondary); border-color: var(--accent-secondary); }

.cb-info-card { background: var(--gradient-card); border: 1px solid var(--border-medium); border-radius: var(--border-radius); padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.cb-chord-name { display: flex; align-items: baseline; gap: 4px; }
.cb-chord-root { font-family: var(--font-display); font-size: 2rem; font-weight: 800; color: var(--accent-warm); }
.cb-chord-symbol { font-size: 1.2rem; color: var(--text-secondary); font-weight: 600; }
.cb-formula-label, .cb-notes-label { font-size: 0.8rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.cb-formula-value { font-size: 1rem; font-weight: 700; margin-left: 8px; }
.cb-notes-pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.cb-note-pill { display: flex; flex-direction: column; align-items: center; gap: 1px; padding: 6px 12px; border-radius: 8px; border: 1px solid; font-weight: 600; }
.pill-interval { font-size: 0.65rem; opacity: 0.8; }
.pill-name { font-size: 0.9rem; }
.cb-play-btn { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 20px; background: var(--gradient-hero); color: white; border: none; border-radius: 8px; font-size: 0.9rem; font-weight: 600; cursor: pointer; transition: var(--transition-normal); font-family: var(--font-main); align-self: flex-start; }
.cb-play-btn:hover { transform: scale(1.02); box-shadow: var(--shadow-glow); }
.cb-play-btn.playing { animation: pulse-btn 0.4s ease; }
@keyframes pulse-btn { 0% { transform: scale(1); } 50% { transform: scale(1.05); } 100% { transform: scale(1); } }
.cb-fretboard-container { overflow-x: auto; }

/* ─── Lessons ──────────────────────────────────────── */
.lessons-list { display: flex; flex-direction: column; gap: 24px; }
.level-title { font-family: var(--font-display); font-size: 1rem; font-weight: 700; color: var(--accent-secondary); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 1px; }
.lessons-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; }
.lesson-card { display: flex; align-items: center; gap: 12px; padding: 14px 16px; background: var(--gradient-card); border: 1px solid var(--border-subtle); border-radius: var(--border-radius-sm); cursor: pointer; transition: var(--transition-normal); text-align: left; font-family: var(--font-main); color: var(--text-primary); position: relative; }
.lesson-card:hover { border-color: var(--accent-primary); transform: translateX(4px); }
.lesson-card.completed { border-color: rgba(46,204,113,0.3); }
.lesson-icon { font-size: 1.5rem; flex-shrink: 0; }
.lesson-card-title { font-size: 0.9rem; font-weight: 600; flex: 1; }
.lesson-meta { font-size: 0.7rem; color: var(--text-muted); }
.lesson-check { position: absolute; top: 8px; right: 8px; color: var(--accent-success); font-weight: 800; font-size: 0.8rem; }

.lesson-view { display: flex; flex-direction: column; gap: 20px; }
.lesson-back-btn { background: none; border: none; color: var(--text-secondary); font-size: 0.85rem; cursor: pointer; padding: 4px 0; font-family: var(--font-main); text-align: left; transition: var(--transition-fast); }
.lesson-back-btn:hover { color: var(--text-primary); }
.lesson-header { display: flex; align-items: center; gap: 12px; }
.lesson-icon-lg { font-size: 2.5rem; }
.lesson-title { font-family: var(--font-display); font-size: 1.4rem; font-weight: 800; flex: 1; }
.lesson-duration { font-size: 0.8rem; color: var(--text-muted); background: var(--bg-input); padding: 4px 10px; border-radius: 20px; }

.lesson-content { background: var(--gradient-card); border: 1px solid var(--border-subtle); border-radius: var(--border-radius); padding: 20px; line-height: 1.8; font-size: 0.95rem; }
.lesson-content p { margin-bottom: 12px; }
.lesson-content strong { color: var(--accent-warm); }
.lesson-highlight { background: rgba(108,92,231,0.12); border-left: 3px solid var(--accent-primary); padding: 10px 16px; border-radius: 0 8px 8px 0; font-weight: 600; font-size: 1rem; }
.lesson-list { list-style: none; display: flex; flex-direction: column; gap: 6px; padding-left: 4px; }
.lesson-list li { font-size: 0.9rem; }
.lesson-fretboard { overflow-x: auto; }

.lesson-exercise { background: var(--gradient-card); border: 1px solid rgba(255,215,0,0.2); border-radius: var(--border-radius); padding: 20px; }
.exercise-title { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.exercise-question { font-size: 0.95rem; margin-bottom: 16px; }
.exercise-options { display: flex; flex-wrap: wrap; gap: 8px; }
.exercise-opt-btn { padding: 10px 18px; background: var(--bg-input); border: 1px solid var(--border-subtle); border-radius: 8px; color: var(--text-primary); font-size: 0.9rem; cursor: pointer; transition: var(--transition-fast); font-family: var(--font-main); }
.exercise-opt-btn:hover:not(:disabled) { border-color: var(--accent-primary); }
.exercise-opt-btn.correct { background: rgba(46,204,113,0.2); border-color: var(--accent-success); color: var(--accent-success); }
.exercise-opt-btn.wrong { background: rgba(231,76,60,0.2); border-color: var(--accent-danger); color: var(--accent-danger); }
.exercise-feedback { margin-top: 12px; }
.feedback-correct { color: var(--accent-success); font-weight: 700; }
.feedback-wrong { color: var(--accent-danger); font-weight: 700; }

.lesson-nav { display: flex; justify-content: space-between; gap: 12px; }
.lesson-nav-btn { padding: 10px 20px; background: var(--bg-input); border: 1px solid var(--border-subtle); border-radius: 8px; color: var(--text-primary); font-size: 0.9rem; cursor: pointer; font-family: var(--font-main); transition: var(--transition-fast); }
.lesson-nav-btn:hover { border-color: var(--accent-primary); }
.lesson-nav-btn.primary { background: var(--accent-primary); border-color: var(--accent-primary); }

/* ─── Exercises ────────────────────────────────────── */
.ex-menu { display: flex; flex-direction: column; gap: 20px; }
.ex-stats-bar { display: flex; justify-content: center; gap: 24px; padding: 12px; background: var(--gradient-card); border: 1px solid var(--border-subtle); border-radius: var(--border-radius); }
.ex-stat { display: flex; flex-direction: column; align-items: center; }
.ex-stat-val { font-size: 1.2rem; font-weight: 800; font-family: var(--font-display); }
.ex-stat-label { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; }
.ex-menu-title { font-family: var(--font-display); font-size: 1rem; font-weight: 700; text-align: center; }
.ex-type-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; }
.ex-type-card { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 20px; background: var(--gradient-card); border: 1px solid var(--border-subtle); border-radius: var(--border-radius); cursor: pointer; transition: var(--transition-normal); font-family: var(--font-main); color: var(--text-primary); }
.ex-type-card:hover { border-color: var(--accent-primary); transform: translateY(-2px); }
.ex-type-card.random { border-color: rgba(255,215,0,0.2); }
.ex-type-icon { font-size: 2rem; }
.ex-type-name { font-size: 0.85rem; font-weight: 600; text-align: center; }

.ex-play { display: flex; flex-direction: column; gap: 16px; }
.ex-question-card { background: var(--gradient-card); border: 1px solid var(--border-medium); border-radius: var(--border-radius); padding: 20px; text-align: center; }
.ex-type-badge { font-size: 0.75rem; color: var(--text-muted); display: block; margin-bottom: 8px; }
.ex-question { font-size: 1.1rem; font-weight: 700; }
.ex-fretboard { overflow-x: auto; }
.ex-options { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.ex-option-btn { padding: 14px; background: var(--bg-input); border: 1px solid var(--border-subtle); border-radius: 10px; color: var(--text-primary); font-size: 0.9rem; font-weight: 600; cursor: pointer; transition: var(--transition-fast); font-family: var(--font-main); }
.ex-option-btn:hover:not(:disabled) { border-color: var(--accent-primary); background: rgba(108,92,231,0.1); }
.ex-option-btn.correct { background: rgba(46,204,113,0.2); border-color: var(--accent-success); color: var(--accent-success); }
.ex-option-btn.wrong { background: rgba(231,76,60,0.2); border-color: var(--accent-danger); color: var(--accent-danger); }
.ex-feedback { text-align: center; font-size: 1rem; min-height: 24px; }
.ex-next-btn { padding: 12px; background: var(--accent-primary); color: white; border: none; border-radius: 8px; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: var(--font-main); }
.ex-next-btn.hidden { display: none; }

/* ─── Progressions ─────────────────────────────────── */
.prog-panel { display: flex; flex-direction: column; gap: 20px; }
.prog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.prog-card { background: var(--gradient-card); border: 1px solid; border-radius: var(--border-radius); padding: 16px; display: flex; flex-direction: column; gap: 8px; transition: var(--transition-normal); }
.prog-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.prog-card-header { display: flex; align-items: center; gap: 8px; }
.prog-style-badge { padding: 2px 8px; border-radius: 20px; font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
.prog-card-title { font-size: 1rem; font-weight: 700; }
.prog-degrees { font-size: 0.85rem; color: var(--text-secondary); font-weight: 600; }
.prog-degree { color: var(--text-primary); }
.prog-chords-display { display: flex; flex-wrap: wrap; gap: 6px; }
.prog-chord-pill { background: var(--bg-input); padding: 4px 10px; border-radius: 6px; font-size: 0.8rem; font-weight: 600; }
.prog-feeling { font-size: 0.8rem; color: var(--text-muted); font-style: italic; }
.prog-card-actions { display: flex; gap: 8px; margin-top: 4px; }
.prog-play-btn, .prog-view-btn { padding: 6px 14px; background: var(--bg-input); border: 1px solid var(--border-subtle); border-radius: 6px; color: var(--text-secondary); font-size: 0.8rem; cursor: pointer; transition: var(--transition-fast); font-family: var(--font-main); }
.prog-play-btn:hover, .prog-view-btn:hover { border-color: var(--accent-primary); color: var(--text-primary); }

.prog-fretboard-area { background: var(--gradient-card); border: 1px solid var(--border-medium); border-radius: var(--border-radius); padding: 16px; }
.prog-fretboard-area.hidden { display: none; }
.prog-fb-title { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.prog-chord-nav { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.prog-nav-btn { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 8px 14px; background: var(--bg-input); border: 1px solid var(--border-subtle); border-radius: 8px; cursor: pointer; font-family: var(--font-main); color: var(--text-secondary); transition: var(--transition-fast); }
.prog-nav-btn:hover { border-color: var(--accent-primary); }
.prog-nav-btn.active { color: var(--text-primary); }
.prog-nav-degree { font-size: 0.7rem; font-weight: 700; }
.prog-nav-name { font-size: 0.85rem; font-weight: 600; }