/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg-base:      #0d0d0d;
    --bg-surface:   #111111;
    --bg-card:      #181818;
    --bg-hover:     #1f1f1f;
    --accent:       #e53e3e;
    --accent-dark:  #c53030;
    --text-primary: #f0f0f0;
    --text-secondary:#a0a0a0;
    --text-muted:   #555555;
    --border:       #1e1e1e;
    --border-light: #2a2a2a;
    --font-mono:    'Courier New', Courier, monospace;
    --transition:   0.25s ease;
}

html, body {
    height: 100%;
    background: var(--bg-base);
    color: var(--text-primary);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: #333; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #444; }

/* ===== NAVBAR ===== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(13,13,13,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 0 2.5rem;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #fff;
}

.navbar-brand span { color: var(--accent); }

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
}

.navbar-nav a {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    transition: color var(--transition);
}

.navbar-nav a:hover { color: #fff; }

.btn-login {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--accent) !important;
    border: 1px solid rgba(229,62,62,0.3);
    border-radius: 4px;
    padding: 0.4rem 1rem !important;
    transition: all var(--transition) !important;
}

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

/* ===== HERO WEEK SECTION ===== */
.week-hero {
    padding: 3.5rem 2.5rem 2rem;
    text-align: center;
    border-bottom: 1px solid var(--border);
    background: var(--bg-surface);
}

.week-label {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.35em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.75rem;
}

.week-title {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #fff;
    margin-bottom: 0.5rem;
}

.week-date-badge {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    padding: 0.25rem 1rem;
    border: 1px solid var(--border-light);
    border-radius: 20px;
}

/* ===== MAIN CONTENT GRID ===== */
.main-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    height: calc(100vh - 64px - 160px);
    min-height: 500px;
}

/* ===== SONG CONTENT PANEL ===== */
.song-panel {
    overflow-y: auto;
    padding: 3rem 3.5rem;
    border-right: 1px solid var(--border);
    transition: opacity var(--transition);
}

.song-panel.loading { opacity: 0.3; pointer-events: none; }

.song-panel-header { margin-bottom: 2.5rem; }

.song-panel-title {
    font-size: 2rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #fff;
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

.song-panel-artist {
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1.75rem;
}

.song-panel-divider {
    width: 48px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

/* ===== LYRICS CONTENT ===== */
.lyrics-content {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    color: #ccc;
}

.lyrics-content p,
.lyrics-content div {
    margin-bottom: 0;
    min-height: 1.4em;
}

/* Chord lines — detected automatically by JS */
.lyrics-content .chord-line {
    color: #b06010;          /* fallback if span not injected */
    margin-top: 0.9em;
    line-height: 1.3;
}

/* Individual chord tokens inside a chord line */
.lyrics-content .chord {
    color: #d4700f;          /* CifraClub orange-dark */
    font-weight: 700;
    font-size: 0.88rem;
    letter-spacing: 0.03em;
}

/* Lyric lines sit tight below their chord line */
.lyrics-content .lyric-line {
    margin-top: 0;
    line-height: 1.55;
    color: #ddd;
}

/* Section markers like [Refrão] [Verso] */
.lyrics-content .lyric-line:has-text('['),
.lyrics-content p:empty + p { margin-top: 1em; }

/* Bold used manually for chords still gets orange */
.lyrics-content strong {
    color: #d4700f;
    font-weight: 700;
}

.lyrics-content em { color: var(--text-secondary); }

.lyrics-content h1, .lyrics-content h2, .lyrics-content h3 {
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin: 1.5rem 0 0.5rem;
    font-family: var(--font-mono);
}

/* ===== SONG LIST SIDEBAR ===== */
.song-sidebar {
    overflow-y: auto;
    background: var(--bg-surface);
    display: flex;
    flex-direction: column;
}

.sidebar-title {
    padding: 1.25rem 1.5rem;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.song-list { flex: 1; }

.song-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: background var(--transition);
    border-left: 3px solid transparent;
    position: relative;
}

.song-item:hover { background: var(--bg-hover); }

.song-item.active {
    background: var(--bg-card);
    border-left-color: var(--accent);
}

.song-item-number {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    min-width: 22px;
    font-family: var(--font-mono);
}

.song-item.active .song-item-number { color: var(--accent); }

.song-item-info { flex: 1; min-width: 0; }

.song-item-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 0.2rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.song-item.active .song-item-title { color: #fff; }

.song-item-artist {
    font-size: 0.72rem;
    color: var(--text-muted);
    display: block;
}

.song-item-play {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
    opacity: 0;
    transition: opacity var(--transition);
}

.song-item.active .song-item-play { opacity: 1; }
.song-item:hover .song-item-play { opacity: 0.4; }

/* ===== EMPTY STATE ===== */
.empty-week {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    text-align: center;
    padding: 3rem;
}

.empty-week-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    opacity: 0.2;
}

.empty-week h2 {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.empty-week p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== LOGIN PAGE ===== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-base);
    padding: 2rem;
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 2.5rem;
}

.login-brand {
    text-align: center;
    margin-bottom: 2.5rem;
}

.login-brand-name {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #fff;
}

.login-brand-name span { color: var(--accent); }

.login-brand-sub {
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.15em;
    margin-top: 0.4rem;
}

.form-group { margin-bottom: 1.25rem; }

.form-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: 4px;
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: border-color var(--transition);
    outline: none;
}

.form-control:focus { border-color: var(--accent); }
.form-control.is-invalid { border-color: #f56565; }

.invalid-feedback {
    font-size: 0.75rem;
    color: #f56565;
    margin-top: 0.4rem;
}

.btn-primary {
    display: block;
    width: 100%;
    padding: 0.85rem;
    background: var(--accent);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    border-radius: 4px;
    transition: background var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary:hover { background: var(--accent-dark); }

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.form-check input { accent-color: var(--accent); }

.form-check label {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.back-link {
    display: block;
    text-align: center;
    margin-top: 1.25rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    transition: color var(--transition);
}

.back-link:hover { color: var(--text-secondary); }

/* ===== WEEKS INDEX PAGE ===== */
.weeks-page { min-height: calc(100vh - 64px); }

.weeks-hero {
    padding: 4rem 2rem 3rem;
    text-align: center;
    border-bottom: 1px solid var(--border);
    background: var(--bg-surface);
}

.weeks-sub {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 0.6rem;
}

/* ===== TRACKLIST LAYOUT ===== */
.tracklist-wrapper {
    max-width: 860px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

.tracklist-section {
    margin-bottom: 3rem;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border-light);
    border-top: none;
}

.tracklist {
    border-left: 1px solid var(--border-light);
    border-right: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
    border-radius: 0 0 6px 6px;
    overflow: hidden;
}

/* Week section header */
.tracklist-week-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.1rem 1.5rem;
    background: #1a1a1a;
    border: 1px solid var(--border-light);
    border-radius: 6px 6px 0 0;
    border-bottom: 2px solid var(--accent);
}

.tracklist-week-info {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.tracklist-week-icon {
    color: var(--accent);
    font-size: 0.8rem;
}

.tracklist-week-label {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.tracklist-week-date {
    font-size: 1.4rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.04em;
}

.tracklist-view-all {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    text-decoration: none;
    opacity: 0.7;
    transition: opacity var(--transition);
}

.tracklist-view-all:hover { opacity: 1; }

/* Individual track row */
.track-row {
    display: flex;
    align-items: center;
    padding: 1.1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    background: #111;
    transition: background var(--transition);
    gap: 1.25rem;
}

.track-row:last-child { border-bottom: none; }

.track-row:hover { background: var(--bg-hover); }

.track-play {
    font-size: 0.6rem;
    color: var(--text-muted);
    transition: color var(--transition);
    flex-shrink: 0;
    width: 16px;
}

.track-row:hover .track-play { color: var(--accent); }

.track-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    min-width: 0;
}

.track-number {
    font-size: 0.7rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-muted);
    flex-shrink: 0;
    min-width: 22px;
}

.track-meta {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    min-width: 0;
}

.track-title {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #e0e0e0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-row:hover .track-title { color: #fff; }

.track-artist {
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.03em;
}

.track-actions {
    flex-shrink: 0;
    display: flex;
    gap: 0.5rem;
}

.track-btn {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 0.45rem 1rem;
    border-radius: 3px;
    border: 1px solid;
    transition: all var(--transition);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.track-btn-primary {
    color: var(--accent);
    border-color: rgba(229,62,62,0.35);
    background: transparent;
}

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

/* ===== BACK BUTTON (week page) ===== */
.back-to-weeks {
    display: inline-block;
    margin: 1rem 0 0.5rem;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.4rem 0.75rem;
    border: 1px solid var(--border-light);
    border-radius: 4px;
    transition: all var(--transition);
    white-space: nowrap;
}

.back-to-weeks:hover {
    color: #fff;
    border-color: #444;
    background: var(--bg-hover);
}

/* Bottom back link in sidebar */
.sidebar-back-link {
    display: block;
    padding: 1rem 1.5rem;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    border-top: 1px solid var(--border);
    margin-top: auto;
    transition: color var(--transition);
    flex-shrink: 0;
}

.sidebar-back-link:hover { color: var(--accent); }

/* ===== NAVBAR MOBILE MENU ===== */
.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.4rem;
    background: none;
    border: none;
}

.navbar-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-secondary);
    border-radius: 2px;
    transition: all var(--transition);
}

.navbar-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar-toggle.open span:nth-child(2) { opacity: 0; }
.navbar-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== RESPONSIVE — TABLET (≤900px) ===== */
@media (max-width: 900px) {
    .weeks-hero { padding: 2.5rem 1.25rem 2rem; }
    .tracklist-wrapper { padding: 2rem 1rem; }
    .tracklist-week-header { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
    .back-to-weeks { position: static; transform: none; margin: 1rem 1.25rem 0; display: inline-block; }
    /* Navbar */
    .navbar { padding: 0 1.25rem; position: relative; flex-wrap: wrap; height: auto; min-height: 60px; }
    .navbar-toggle { display: flex; }

    .navbar-nav {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        padding: 0.75rem 0 1rem;
        gap: 0.25rem;
        border-top: 1px solid var(--border);
    }

    .navbar-nav.open { display: flex; }
    .navbar-nav a { width: 100%; padding: 0.6rem 0; font-size: 0.8rem; }
    .btn-login { border: none !important; padding: 0.6rem 0 !important; }

    /* Week hero */
    .week-hero { padding: 2rem 1.25rem 1.5rem; }
    .week-title { font-size: 1.5rem; }

    /* Main grid — stack vertically */
    .main-grid {
        grid-template-columns: 1fr;
        height: auto;
    }

    /* Song panel */
    .song-panel {
        padding: 1.75rem 1.25rem;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .song-panel-title { font-size: 1.5rem; }

    /* Sidebar: scrollable strip below */
    .song-sidebar { max-height: 340px; }

    .song-item { padding: 1rem 1.25rem; }
}

/* ===== RESPONSIVE — MOBILE (≤600px) ===== */
@media (max-width: 600px) {
    .tracklist-wrapper { padding: 1.25rem 0.75rem; }
    .track-row { padding: 0.9rem 0.5rem; gap: 0.75rem; }
    .track-info { gap: 0.75rem; }
    .track-btn { padding: 0.4rem 0.6rem; font-size: 0.6rem; }

    /* Week hero */
    .week-hero { padding: 1.5rem 1rem 1.25rem; }
    .week-title { font-size: 1.2rem; letter-spacing: 0.04em; }
    .week-label { font-size: 0.6rem; }
    .week-date-badge { font-size: 0.7rem; padding: 0.2rem 0.75rem; }

    /* Song panel */
    .song-panel { padding: 1.25rem 1rem; }
    .song-panel-title { font-size: 1.2rem; }
    .song-panel-artist { font-size: 0.75rem; margin-bottom: 1.25rem; }

    /* Lyrics */
    .lyrics-content { font-size: 0.82rem; line-height: 2.1; }

    /* Sidebar */
    .song-sidebar { max-height: 280px; }
    .sidebar-title { padding: 1rem; }
    .song-item { padding: 0.85rem 1rem; gap: 0.75rem; }
    .song-item-title { font-size: 0.8rem; }
    .song-item-artist { font-size: 0.68rem; }

    /* Login */
    .login-card { padding: 2rem 1.25rem; }

    /* Empty state */
    .empty-week { padding: 2rem 1rem; }
}

/* ===== AUTO-SCROLL BAR ===== */
.autoscroll-bar {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 200;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(20,20,20,0.95);
    border: 1px solid #2a2a2a;
    border-radius: 50px;
    padding: 0.55rem 1.1rem;
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 24px rgba(0,0,0,0.5);
    transition: opacity 0.3s;
    user-select: none;
}

.autoscroll-toggle {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
    transition: background 0.2s;
}
.autoscroll-toggle:hover { background: var(--accent-dark); }

.autoscroll-label {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #999;
    white-space: nowrap;
}

.autoscroll-speeds {
    display: flex;
    gap: 0.3rem;
}

.speed-btn {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.3rem 0.65rem;
    border-radius: 20px;
    background: #1e1e1e;
    color: #888;
    border: 1px solid #2a2a2a;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}
.speed-btn:hover { color: #ddd; border-color: #444; }
.speed-btn.active {
    background: #d4700f;
    color: #fff;
    border-color: #d4700f;
}

@media (max-width: 600px) {
    .autoscroll-bar { bottom: 1rem; padding: 0.5rem 0.85rem; gap: 0.5rem; }
    .autoscroll-label { display: none; }
    .speed-btn { padding: 0.25rem 0.5rem; font-size: 0.65rem; }
}