/*
Guitar Practice System - Custom Styles
Dark, warm colour scheme with clean typography
*/

:root {
    --bg-body: #1a1a2e;
    --bg-surface: #16213e;
    --bg-card: #1e2a47;
    --bg-card-hover: #243352;
    --bg-input: #1a2440;
    --border-subtle: #2a3a5c;
    --border-strong: #3a4f7a;

    --text-primary: #e8e8f0;
    --text-secondary: #a0a8c0;
    --text-muted: #6b7694;

    --accent-primary: #6c9bce;
    --accent-primary-hover: #85b0dd;
    --accent-success: #5dab68;
    --accent-success-hover: #6fc07a;
    --accent-warning: #d4a843;
    --accent-warning-hover: #e0ba5a;
    --accent-danger: #c9555a;
    --accent-danger-hover: #d8686d;
    --accent-info: #5ba0b5;
    --accent-muted: #5a6480;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
}

/* ── Base ────────────────────────────────────────── */

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-body);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

main {
    flex: 1;
}

a {
    color: var(--accent-primary);
}
a:hover {
    color: var(--accent-primary-hover);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
}

.text-muted {
    color: var(--text-muted) !important;
}

code {
    color: var(--accent-info);
    background-color: rgba(91, 160, 181, 0.12);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    font-size: 0.88em;
}

hr {
    border-color: var(--border-subtle);
    opacity: 0.5;
}

/* ── Navigation ─────────────────────────────────── */

.navbar {
    background-color: var(--bg-surface) !important;
    border-bottom: 1px solid var(--border-subtle);
    padding: 0.6rem 0;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.2rem;
    color: var(--text-primary) !important;
    letter-spacing: 0.02em;
}

.navbar-nav .nav-link {
    color: var(--text-secondary) !important;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: color 0.15s, background-color 0.15s;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--text-primary) !important;
    background-color: rgba(108, 155, 206, 0.1);
}

/* ── Cards ──────────────────────────────────────── */

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-primary);
}

.card-header {
    background-color: rgba(0, 0, 0, 0.15);
    border-bottom: 1px solid var(--border-subtle);
    font-weight: 600;
}

.card-title {
    color: var(--text-primary);
}

.card-text {
    color: var(--text-secondary);
}

.card.border-success {
    border-color: var(--accent-success) !important;
}

.card.border-warning {
    border-color: var(--accent-warning) !important;
}

/* ── Module Cards (session planning) ────────────── */

.module-card {
    transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
    cursor: pointer;
    height: 100%;
}

.module-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    border-color: var(--border-strong);
}

.module-card.selected {
    border: 2px solid var(--accent-primary);
    background-color: rgba(108, 155, 206, 0.08);
}

/* ── Session Planning ───────────────────────────── */

.module-list {
    max-height: 60vh;
    overflow-y: auto;
}

.module-list::-webkit-scrollbar {
    width: 6px;
}
.module-list::-webkit-scrollbar-track {
    background: transparent;
}
.module-list::-webkit-scrollbar-thumb {
    background-color: var(--border-strong);
    border-radius: 3px;
}

.selected-modules-list {
    min-height: 200px;
    background-color: rgba(0, 0, 0, 0.15);
    border-radius: var(--radius-md);
    padding: 1rem;
}

.selected-module-item {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ── Practice Session ───────────────────────────── */

.practice-timer {
    font-size: 3.5rem;
    font-weight: 700;
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    text-align: center;
    color: var(--accent-primary);
    letter-spacing: 0.05em;
}

.module-instructions {
    background-color: rgba(212, 168, 67, 0.1);
    border-left: 3px solid var(--accent-warning);
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary);
}

.progress-indicator {
    height: 6px;
    background-color: rgba(255, 255, 255, 0.06);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-success));
    transition: width 0.4s ease;
    border-radius: 3px;
}

/* ── Rating Buttons ─────────────────────────────── */

.rating-btn-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.rating-btn {
    flex: 1;
    min-width: 120px;
    padding: 0.9rem;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    transition: transform 0.1s, box-shadow 0.15s;
}

.rating-btn:hover {
    transform: translateY(-1px);
}

.rating-btn.btn-success {
    background-color: var(--accent-success);
    border-color: var(--accent-success);
    color: #fff;
}
.rating-btn.btn-success:hover {
    background-color: var(--accent-success-hover);
}

.rating-btn.btn-warning {
    background-color: var(--accent-warning);
    border-color: var(--accent-warning);
    color: #1a1a2e;
}
.rating-btn.btn-warning:hover {
    background-color: var(--accent-warning-hover);
}

.rating-btn.btn-danger {
    background-color: var(--accent-danger);
    border-color: var(--accent-danger);
    color: #fff;
}
.rating-btn.btn-danger:hover {
    background-color: var(--accent-danger-hover);
}

.rating-btn.btn-secondary {
    background-color: var(--accent-muted);
    border-color: var(--accent-muted);
    color: var(--text-primary);
}

/* ── Badges ─────────────────────────────────────── */

.badge.bg-success {
    background-color: var(--accent-success) !important;
}
.badge.bg-warning {
    background-color: var(--accent-warning) !important;
    color: #1a1a2e !important;
}
.badge.bg-danger {
    background-color: var(--accent-danger) !important;
}
.badge.bg-secondary {
    background-color: var(--accent-muted) !important;
    color: var(--text-primary) !important;
}
.badge.bg-info {
    background-color: var(--accent-info) !important;
    color: #fff !important;
}
.badge.bg-primary {
    background-color: var(--accent-primary) !important;
}

/* ── Difficulty Indicator ───────────────────────── */

.difficulty-badge {
    padding: 0.2rem 0.55rem;
    border-radius: 4px;
    font-size: 0.82rem;
    font-weight: 500;
}

.difficulty-1, .difficulty-2, .difficulty-3 {
    background-color: rgba(93, 171, 104, 0.15);
    color: var(--accent-success);
}

.difficulty-4, .difficulty-5, .difficulty-6 {
    background-color: rgba(212, 168, 67, 0.15);
    color: var(--accent-warning);
}

.difficulty-7, .difficulty-8, .difficulty-9, .difficulty-10 {
    background-color: rgba(201, 85, 90, 0.15);
    color: var(--accent-danger);
}

/* ── Module Progress ────────────────────────────── */

.progress-card {
    margin-bottom: 1rem;
}

.variant-badge {
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    font-size: 0.85rem;
}

/* ── Summary Stats ──────────────────────────────── */

.summary-stat {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
}

.summary-stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    display: block;
}

.summary-stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

/* ── Tables ─────────────────────────────────────── */

.table {
    color: var(--text-primary);
    --bs-table-bg: transparent;
    --bs-table-hover-bg: rgba(108, 155, 206, 0.06);
    border-color: var(--border-subtle);
}

.table thead th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-bottom-color: var(--border-subtle);
    padding-bottom: 0.75rem;
}

.table td {
    border-bottom-color: rgba(42, 58, 92, 0.5);
    vertical-align: middle;
    padding: 0.65rem 0.5rem;
}

/* ── Alerts ─────────────────────────────────────── */

.alert {
    border-radius: var(--radius-md);
    border-left-width: 3px;
    border: 1px solid;
}

.alert-warning {
    background-color: rgba(212, 168, 67, 0.08);
    border-color: rgba(212, 168, 67, 0.3);
    color: var(--accent-warning);
}

.alert-secondary {
    background-color: rgba(90, 100, 128, 0.1);
    border-color: rgba(90, 100, 128, 0.25);
    color: var(--text-secondary);
}

.alert-info {
    background-color: rgba(91, 160, 181, 0.08);
    border-color: rgba(91, 160, 181, 0.25);
    color: var(--accent-info);
}

.alert-success {
    background-color: rgba(93, 171, 104, 0.08);
    border-color: rgba(93, 171, 104, 0.25);
    color: var(--accent-success);
}

.alert-danger {
    background-color: rgba(201, 85, 90, 0.08);
    border-color: rgba(201, 85, 90, 0.25);
    color: var(--accent-danger);
}

.alert .btn-close {
    filter: invert(1) grayscale(100%) brightness(0.8);
}

.alert a,
.alert .alert-link {
    color: inherit;
    font-weight: 600;
}

/* ── Buttons ────────────────────────────────────── */

.btn-primary {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #fff;
}
.btn-primary:hover {
    background-color: var(--accent-primary-hover);
    border-color: var(--accent-primary-hover);
}

.btn-success {
    background-color: var(--accent-success);
    border-color: var(--accent-success);
    color: #fff;
}
.btn-success:hover {
    background-color: var(--accent-success-hover);
    border-color: var(--accent-success-hover);
}

.btn-warning {
    background-color: var(--accent-warning);
    border-color: var(--accent-warning);
    color: #1a1a2e;
}

.btn-secondary {
    background-color: var(--accent-muted);
    border-color: var(--accent-muted);
    color: var(--text-primary);
}

.btn-outline-primary {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}
.btn-outline-primary:hover {
    background-color: var(--accent-primary);
    color: #fff;
}

.btn-outline-secondary {
    color: var(--text-secondary);
    border-color: var(--border-strong);
}
.btn-outline-secondary:hover {
    background-color: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.btn-outline-danger {
    color: var(--accent-danger);
    border-color: var(--accent-danger);
}
.btn-outline-danger:hover {
    background-color: var(--accent-danger);
    color: #fff;
}

/* ── Forms ──────────────────────────────────────── */

.form-control,
.form-select {
    background-color: var(--bg-input);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
}

.form-control:focus,
.form-select:focus {
    background-color: var(--bg-input);
    border-color: var(--accent-primary);
    color: var(--text-primary);
    box-shadow: 0 0 0 2px rgba(108, 155, 206, 0.2);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
}

.form-text {
    color: var(--text-muted);
}

/* ── Modals ─────────────────────────────────────── */

.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
}

.modal-header {
    border-bottom-color: var(--border-subtle);
}

.modal-footer {
    border-top-color: var(--border-subtle);
}

.btn-close {
    filter: invert(1) grayscale(100%) brightness(0.8);
}

/* ── Footer ─────────────────────────────────────── */

footer {
    background-color: var(--bg-surface) !important;
    border-top: 1px solid var(--border-subtle);
}

footer .text-muted {
    color: var(--text-muted) !important;
}

/* ── Bootstrap bg-light override ────────────────── */

.bg-light {
    background-color: rgba(255, 255, 255, 0.03) !important;
}

.bg-dark {
    background-color: var(--bg-surface) !important;
}

.bg-primary {
    background-color: var(--accent-primary) !important;
}

/* ── Responsive ─────────────────────────────────── */

@media (max-width: 768px) {
    .practice-timer {
        font-size: 2.5rem;
    }

    .rating-btn {
        min-width: 100%;
    }

    .summary-stat-value {
        font-size: 2rem;
    }
}

/* ── Utility ────────────────────────────────────── */

.cursor-pointer {
    cursor: pointer;
}

.text-muted-light {
    color: var(--text-muted);
}

.border-start-thick {
    border-left-width: 3px !important;
}

.text-warning {
    color: var(--accent-warning) !important;
}

/* ── Track Selector ─────────────────────────────── */

.track-btn {
    min-width: 140px;
}

.form-check-input {
    background-color: var(--bg-input);
    border-color: var(--border-strong);
}

.form-check-input:checked {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.form-check-label {
    color: var(--text-secondary);
}

/* ── Fretboard Game ────────────────────────────── */

/* Wrapper and scrolling */
.fretboard-wrapper {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 1rem 0.5rem;
}

.fretboard-scroll {
    overflow-x: auto;
    padding-bottom: 0.5rem;
}

.fretboard-scroll::-webkit-scrollbar {
    height: 6px;
}
.fretboard-scroll::-webkit-scrollbar-track {
    background: transparent;
}
.fretboard-scroll::-webkit-scrollbar-thumb {
    background-color: var(--border-strong);
    border-radius: 3px;
}

/* Grid layout: label col + 25 fret cols, 7 rows (header + 6 strings) */
.fretboard {
    display: grid;
    grid-template-columns: 40px repeat(25, minmax(42px, 1fr));
    grid-template-rows: 24px repeat(6, 36px);
    gap: 0;
    min-width: 1100px;
    user-select: none;
}

/* Fret number header row */
.fb-fret-num {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
}

.fb-fret-num.fb-double-marker {
    color: var(--accent-primary);
    font-weight: 700;
}

/* String labels (left column) */
.fb-label {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.fb-label.fb-header {
    color: transparent;
}

.fb-label.fb-active-string {
    color: var(--accent-primary);
    text-shadow: 0 0 8px rgba(108, 155, 206, 0.4);
}

/* Individual fret cells */
.fb-cell {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid var(--border-subtle);
    background-color: var(--bg-card);
    cursor: pointer;
    transition: background-color 0.1s;
}

.fb-cell:hover {
    background-color: var(--bg-card-hover);
}

.fb-cell.fb-active-row {
    background-color: rgba(108, 155, 206, 0.06);
}

.fb-cell.fb-active-row:hover {
    background-color: rgba(108, 155, 206, 0.14);
}

/* Nut (fret 0) */
.fb-cell.fb-nut {
    border-right: 3px solid var(--text-secondary);
    background-color: rgba(255, 255, 255, 0.03);
}

/* String line through each cell */
.fb-string-line {
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(to bottom, #aaa, #888);
    border-radius: 1px;
    pointer-events: none;
    opacity: 0.5;
}

/* Clickable hit area (invisible, centered) */
.fb-hit {
    position: absolute;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    z-index: 2;
    pointer-events: none;
}

/* Feedback states */
.fb-cell.fb-correct {
    background-color: rgba(93, 171, 104, 0.35) !important;
    animation: fb-flash-correct 0.4s ease;
}

.fb-cell.fb-wrong {
    background-color: rgba(201, 85, 90, 0.35) !important;
    animation: fb-flash-wrong 0.3s ease;
}

.fb-cell.fb-correct-hint {
    background-color: rgba(108, 155, 206, 0.25) !important;
    box-shadow: inset 0 0 0 2px var(--accent-primary);
}

@keyframes fb-flash-correct {
    0%   { background-color: rgba(93, 171, 104, 0.7); transform: scale(1.05); }
    100% { background-color: rgba(93, 171, 104, 0.35); transform: scale(1); }
}

@keyframes fb-flash-wrong {
    0%   { background-color: rgba(201, 85, 90, 0.6); }
    50%  { background-color: rgba(201, 85, 90, 0.2); }
    100% { background-color: rgba(201, 85, 90, 0.35); }
}

/* Note label shown on feedback */
.fb-note-label {
    position: absolute;
    font-size: 0.7rem;
    font-weight: 700;
    color: #fff;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
    z-index: 3;
    pointer-events: none;
}

/* Challenge display */
.challenge-display {
    font-size: 1.8rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
}

.challenge-note {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--accent-warning);
    margin-right: 0.4rem;
    letter-spacing: -0.02em;
}

.challenge-string {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-left: 0.4rem;
}

/* String select buttons active state */
.string-select.active {
    background-color: var(--accent-primary) !important;
    border-color: var(--accent-primary) !important;
    color: #fff !important;
}

/* ── Fretboard Responsive ──────────────────────── */

@media (max-width: 768px) {
    .fretboard {
        grid-template-columns: 30px repeat(25, minmax(34px, 1fr));
        grid-template-rows: 20px repeat(6, 30px);
        min-width: 900px;
    }

    .challenge-note {
        font-size: 2.2rem;
    }

    .challenge-string {
        font-size: 1.5rem;
    }

    .challenge-display {
        font-size: 1.4rem;
    }
}

/* ── Recording Module ──────────────────────────── */

/* Status indicator */
.rec-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.rec-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--text-muted);
    display: inline-block;
}

.rec-dot-active {
    background-color: var(--accent-danger);
    animation: rec-pulse 1s ease-in-out infinite;
}

.rec-dot-done {
    background-color: var(--accent-success);
}

@keyframes rec-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%      { opacity: 0.4; transform: scale(1.3); }
}

/* Timer */
.rec-timer {
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    letter-spacing: 0.05em;
    text-align: center;
}

/* Visualiser */
.rec-visualiser-wrapper {
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.rec-visualiser {
    width: 100%;
    height: 80px;
    display: block;
}

/* Control buttons */
.rec-control-btn {
    min-width: 130px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

/* Audio player */
.rec-audio-player {
    width: 100%;
    border-radius: var(--radius-sm);
    background: transparent;
    filter: invert(0.85) hue-rotate(180deg);
}

/* ── Chord Teleprompter ────────────────────────── */

/* Chord tag input area */
.chord-tags-area {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    min-height: 38px;
    padding: 0.4rem;
    background-color: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
}

.chord-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.25rem 0.6rem;
    background-color: var(--accent-primary);
    color: #fff;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
}

.chord-tag-x {
    cursor: pointer;
    opacity: 0.7;
    font-size: 1rem;
    line-height: 1;
}

.chord-tag-x:hover {
    opacity: 1;
}

/* Beat dots */
.beat-dots {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.beat-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--border-strong);
    transition: background-color 0.1s, transform 0.1s;
}

.beat-dot-active {
    background-color: var(--accent-primary);
}

.beat-dot-accent {
    background-color: var(--accent-warning);
    transform: scale(1.3);
}

/* Teleprompter scroll area */
.chord-teleprompter {
    overflow: hidden;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 2rem 0;
    position: relative;
}

/* Left/right fade masks */
.chord-teleprompter::before,
.chord-teleprompter::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 120px;
    z-index: 2;
    pointer-events: none;
}

.chord-teleprompter::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-surface), transparent);
}

.chord-teleprompter::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-surface), transparent);
}

/* The track that slides */
.chord-track {
    display: flex;
    gap: 1rem;
    padding: 0 50%;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
}

/* Individual chord cards */
.chord-card {
    flex-shrink: 0;
    width: 140px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-subtle);
    background-color: var(--bg-card);
    transition: all 0.35s ease;
}

.chord-card-name {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-secondary);
    transition: all 0.35s ease;
}

/* Active chord */
.chord-card-active {
    border-color: var(--accent-warning);
    background-color: rgba(212, 168, 67, 0.12);
    transform: scale(1.15);
    box-shadow: 0 0 30px rgba(212, 168, 67, 0.2);
}

.chord-card-active .chord-card-name {
    font-size: 2.6rem;
    color: var(--accent-warning);
}

/* Past chords */
.chord-card-past {
    opacity: 0.35;
}

/* Next chords */
.chord-card-next {
    opacity: 0.6;
}

/* ── Chord Teleprompter Responsive ─────────────── */

@media (max-width: 768px) {
    .chord-card {
        width: 100px;
        height: 90px;
    }

    .chord-card-name {
        font-size: 1.5rem;
    }

    .chord-card-active .chord-card-name {
        font-size: 2rem;
    }

    .chord-teleprompter::before,
    .chord-teleprompter::after {
        width: 60px;
    }
}

/* ── Module Management ─────────────────────────── */

.module-manage-card {
    transition: border-color 0.15s;
}

.module-manage-card:hover {
    border-color: var(--border-strong);
}

.chord-tag-sm {
    display: inline-block;
    padding: 0.1rem 0.4rem;
    background-color: rgba(108, 155, 206, 0.15);
    color: var(--accent-primary);
    border-radius: 3px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-left: 0.2rem;
}

.variant-row input {
    font-size: 0.85rem;
}

.btn-check:checked + .btn-outline-primary {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #fff;
}

/* ── Strumming Pattern Display ─────────────────── */

.strum-pattern-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 3px;
    padding: 0.6rem 0;
    margin-bottom: 0.5rem;
}

.strum-slot {
    width: 30px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 5px;
    font-size: 1.2rem;
    font-weight: 700;
    opacity: 0.35;
    transition: all 0.08s ease;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid transparent;
}

.strum-slot-active {
    opacity: 1;
    background: rgba(212, 168, 67, 0.18);
    border-color: var(--accent-warning);
    transform: scale(1.25);
    box-shadow: 0 0 8px rgba(212, 168, 67, 0.25);
}

.strum-slot-down {
    color: var(--accent-success);
}

.strum-slot-up {
    color: var(--accent-primary);
}

.strum-slot-rest {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Divider between beat groups (every 2 eighth notes) */
.strum-slot-divider {
    width: 1px;
    height: 20px;
    background: var(--border-subtle);
    margin: 0 4px;
}

/* Responsive strum slots */
@media (max-width: 576px) {
    .strum-slot {
        width: 24px;
        height: 32px;
        font-size: 1rem;
    }
    .strum-slot-divider {
        margin: 0 2px;
    }
}

/* ── Strum Prompter (large slots for practice view) ───── */
.strum-prompter-main {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    padding: 1.5rem 0;
    flex-wrap: wrap;
}

.strum-prompter-slot {
    width: 48px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.04);
    opacity: 0.4;
    transition: all 0.12s ease;
}

.strum-prompter-slot.strum-slot-active {
    opacity: 1;
    background: rgba(212, 168, 67, 0.18);
    transform: scale(1.25);
    box-shadow: 0 0 12px rgba(212, 168, 67, 0.3);
}

.strum-prompter-divider {
    width: 2px;
    height: 36px;
    background: rgba(255, 255, 255, 0.08);
    align-self: center;
}

@media (max-width: 576px) {
    .strum-prompter-slot {
        width: 36px;
        height: 48px;
        font-size: 1.4rem;
    }
}

/* ── Song Library ─────────────────────────────────────── */

/* Song cards */
.song-card {
    transition: border-color 0.15s;
}
.song-card:hover {
    border-color: var(--border-strong);
}

/* Status badges */
.status-learning {
    background-color: rgba(212, 168, 67, 0.15);
    color: var(--accent-warning);
    padding: 0.2rem 0.55rem;
    border-radius: 4px;
    font-size: 0.82rem;
    font-weight: 500;
}
.status-can_play {
    background-color: rgba(93, 171, 104, 0.15);
    color: var(--accent-success);
    padding: 0.2rem 0.55rem;
    border-radius: 4px;
    font-size: 0.82rem;
    font-weight: 500;
}
.status-mastered {
    background-color: rgba(108, 155, 206, 0.15);
    color: var(--accent-primary);
    padding: 0.2rem 0.55rem;
    border-radius: 4px;
    font-size: 0.82rem;
    font-weight: 500;
}

/* Chord chart display */
.chord-chart-section {
    margin-bottom: 1.5rem;
}
.chord-chart-section-name {
    font-weight: 600;
    color: var(--accent-warning);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.chord-line {
    margin-bottom: 0.8rem;
}
.chord-line-chords {
    font-family: 'Courier New', monospace;
    color: var(--accent-primary);
    font-weight: 700;
    white-space: pre;
    font-size: 0.95rem;
    line-height: 1.3;
}
.chord-line-lyrics {
    white-space: pre;
    color: var(--text-primary);
    line-height: 1.4;
}

/* Section builder in forms */
.section-block {
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-bottom: 1rem;
    background-color: rgba(0, 0, 0, 0.1);
}
.section-line-row {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    align-items: flex-start;
}

/* Status filter tabs */
.song-status-tabs .btn {
    opacity: 0.6;
    transition: opacity 0.15s, border-bottom-color 0.15s;
}
.song-status-tabs .btn.active {
    opacity: 1;
    border-bottom: 2px solid var(--accent-primary);
}

/* Import file dropzone */
.import-dropzone {
    border: 2px dashed var(--border-strong);
    border-radius: var(--radius-md);
    padding: 2rem 1.5rem;
    cursor: pointer;
    transition: border-color 0.15s, background-color 0.15s;
}
.import-dropzone:hover,
.import-dropzone-active {
    border-color: var(--accent-primary);
    background-color: rgba(108, 155, 206, 0.06);
}

/* ── Authentication ────────────────────────────────── */

.auth-container {
    margin-top: 3rem;
}

.auth-container .card {
    background: var(--bg-card);
    border-color: var(--border);
}

.auth-container h2 {
    color: var(--text-primary);
}

.auth-container .form-label {
    color: var(--text-secondary);
}

.auth-container .form-text {
    color: var(--text-muted);
}

.auth-container a {
    color: var(--accent-primary);
}

/* ── Song Visibility & Ownership ──────────────────── */

.song-owner {
    color: var(--text-muted);
    font-style: italic;
}

/* ── Song Tags ─────────────────────────────────────── */
.song-tag-badge {
    background-color: rgba(138, 110, 200, 0.18);
    color: #a88cd6;
    padding: 0.15rem 0.5rem;
    border-radius: 3px;
    font-size: 0.78rem;
    font-weight: 500;
    margin-right: 0.2rem;
}

.tag-chips-area {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    min-height: 2rem;
}

.tag-remove {
    cursor: pointer;
    margin-left: 0.3rem;
    opacity: 0.6;
}
.tag-remove:hover { opacity: 1; }