/* ══════════════════════════════════════════════════════════════════════
   WindTabber — app.css
   Palette: forest green header · warm cream body · amber/terracotta accent
   ══════════════════════════════════════════════════════════════════════ */

/* ── Design tokens ───────────────────────────────────────────────────── */
:root {
  --bg:            #FAF7F2;
  --bg-card:       #FFFFFF;
  --bg-tinted:     #F3EEE5;
  --border:        #E2D9CE;
  --border-muted:  #EDE8E1;
  --text:          #1C1917;
  --text-muted:    #78716C;
  --text-light:    #A8A29E;
  --header-bg:     #1B3A2D;
  --header-fg:     #EEE8D8;
  --accent:        #E9A830;
  --primary:       #C27A2C;
  --primary-dark:  #A8641F;
  --primary-light: #FBF2E2;
  --secondary-bg:  #EDEBE5;
  --secondary-fg:  #3D3632;
  --danger:        #DC2626;
  --shadow-sm:     0 1px 3px rgba(28,25,23,.07), 0 1px 2px rgba(28,25,23,.04);
  --shadow-md:     0 4px 12px rgba(28,25,23,.10), 0 2px 4px rgba(28,25,23,.05);
  --shadow-lg:     0 8px 28px rgba(28,25,23,.13), 0 4px 8px rgba(28,25,23,.07);
  --radius:        10px;
  --radius-sm:     6px;
  --transition:    0.18s ease;
}

/* ── Reset & Base ────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); text-decoration: underline; }

/* ── Layout ──────────────────────────────────────────────────────────── */
.container {
    flex: 1;
    max-width: 1100px;
    margin: 0 auto;
    padding: 2.25rem 1.75rem;
}
.container-xl {
    flex: 1;
    max-width: 1440px;
    margin: 0 auto;
    padding: 2.25rem 1.75rem;
}

/* ── Header ──────────────────────────────────────────────────────────── */
.site-header {
    background: var(--header-bg);
    /* subtle horizontal staff lines */
    background-image: repeating-linear-gradient(
        transparent, transparent 17px,
        rgba(255,255,255,.045) 17px, rgba(255,255,255,.045) 18px
    );
    color: var(--header-fg);
    padding: 0 1.75rem;
    box-shadow: 0 2px 8px rgba(0,0,0,.25);
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header nav {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    gap: 1rem;
    height: 3.25rem;
}

.header-left {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    min-width: 0;
}

.header-center { justify-self: center; }

.header-right {
    justify-self: end;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-left .nav-brand { margin-right: 0; }
.header-center .nav-search { margin-left: 0; }

.site-header a { color: var(--header-fg); opacity: .85; transition: opacity var(--transition); }
.site-header a:hover { opacity: 1; color: var(--header-fg); text-decoration: none; }

.nav-brand {
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: -.5px;
    color: var(--accent) !important;
    opacity: 1 !important;
    margin-right: auto;
    display: flex;
    align-items: center;
    gap: .4rem;
}

/* Nav search */
.nav-search {
    display: flex;
    align-items: center;
    gap: .35rem;
}
.nav-search-input {
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 999px;
    color: var(--header-fg);
    font-size: .95rem;
    padding: .38rem 1rem;
    width: clamp(260px, 34vw, 520px);
    transition: background var(--transition), width .22s ease, border-color var(--transition);
}
.nav-search-input::placeholder { color: rgba(238,232,216,.5); }
.nav-search-input:focus {
    outline: none;
    background: rgba(255,255,255,.18);
    border-color: var(--accent);
    width: clamp(300px, 40vw, 620px);
}
.nav-search-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 700;
    color: rgba(238,232,216,.82);
    padding: .25rem .35rem;
    line-height: 1;
    opacity: .8;
    transition: opacity var(--transition);
}
.nav-search-btn:hover { opacity: 1; }

.nav-auth { display: flex; align-items: center; gap: 1rem; }
.nav-auth .nav-user { color: var(--text-light); font-size: .82rem; }

.lang-switch { display: flex; gap: .3rem; align-items: center; margin-left: .25rem; }
.lang-switch a { font-size: .72rem; font-weight: 700; color: var(--nav-text); padding: .1rem .3rem; border-radius: 3px; text-decoration: none; opacity: .55; transition: opacity .15s; }
.lang-switch a:hover { opacity: 1; }
.lang-switch a.lang-active { opacity: 1; border-bottom: 2px solid var(--accent); }

/* ── Page header ─────────────────────────────────────────────────────── */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -.5px;
}

.page-actions { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; }

/* ── Buttons ─────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .45rem 1.05rem;
    border-radius: 999px;
    font-size: .9rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); text-decoration: none; }
.btn:active { transform: translateY(0); }

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

.btn-secondary { background: var(--secondary-bg); color: var(--secondary-fg); border-color: var(--border); }
.btn-secondary:hover { background: var(--border); color: var(--text); }

.btn-link { background: none; border: none; color: var(--primary); cursor: pointer; font-size: inherit; padding: 0; font-weight: 500; }
.btn-link.danger { color: var(--danger); }
.btn-link:hover { text-decoration: underline; transform: none; box-shadow: none; }
.btn-sm { padding: .2rem .6rem; font-size: .8rem; }
.transpose-btn { margin-top: .4rem; }

/* ── Toggle switches ─────────────────────────────────────────────────── */
.octave-toggle {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    cursor: pointer;
    user-select: none;
    font-size: .85rem;
    font-weight: 600;
    color: var(--text-muted);
}
.octave-toggle input[type="checkbox"] {
    appearance: none;
    width: 2.6rem;
    height: 1.4rem;
    background: var(--border);
    border-radius: 999px;
    position: relative;
    cursor: pointer;
    transition: background var(--transition);
    flex-shrink: 0;
}
.octave-toggle input[type="checkbox"]::after {
    content: '';
    position: absolute;
    top: .15rem;
    left: .15rem;
    width: 1.1rem;
    height: 1.1rem;
    background: #fff;
    border-radius: 50%;
    transition: transform .2s;
    box-shadow: var(--shadow-sm);
}
.octave-toggle input[type="checkbox"]:checked { background: var(--primary); }
.octave-toggle input[type="checkbox"]:checked::after { transform: translateX(1.2rem); }

/* ── Forms ───────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.3rem; }
.form-group label {
    display: block;
    font-weight: 600;
    font-size: .9rem;
    margin-bottom: .35rem;
}
.form-control {
    width: 100%;
    padding: .55rem .85rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    background: var(--bg-card);
    color: var(--text);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(194,122,44,.15);
}
.form-hint { font-size: .8rem; color: var(--text-muted); margin-top: .3rem; display: block; line-height: 1.5; }
.field-error { color: var(--danger); font-size: .85rem; margin-top: .2rem; display: block; }
.form-actions { display: flex; gap: .75rem; margin-top: 1.75rem; }
.song-form {
    max-width: 640px;
    background: var(--bg-card);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}
.checkbox-label { display: flex; align-items: center; gap: .5rem; cursor: pointer; font-weight: 500; }

/* ── Song list ───────────────────────────────────────────────────────── */
.search-result-hint {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
    font-size: .9rem;
    padding: .6rem 1rem;
    background: var(--bg-tinted);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--accent);
}

.category-groups { display: flex; flex-direction: column; gap: 2.25rem; }

.category-group h2 {
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--text-muted);
    margin-bottom: 1rem;
    padding-bottom: .5rem;
    border-bottom: 2px solid var(--border);
    display: flex;
    align-items: center;
    gap: .5rem;
}


.song-list { list-style: none; display: flex; flex-direction: column; gap: .5rem; }

.song-item {
    background: var(--bg-card);
    border: 1px solid var(--border-muted);
    border-left: 4px solid var(--accent);
    border-radius: var(--radius);
    padding: .75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    transition: border-left-color var(--transition), background var(--transition);
}
.song-item:hover {
    background: var(--primary-light);
    border-left-color: var(--primary);
}

.song-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .2rem .5rem;
}

.song-name { font-weight: 600; font-size: 1rem; color: var(--text); }
.song-name:hover { color: var(--primary); text-decoration: none; }
.song-artist { color: var(--text-muted); font-size: .88rem; font-style: italic; }
.song-meta   { color: var(--text-light); font-size: .82rem; }
.song-actions {
    display: flex;
    gap: .5rem;
    align-items: center;
    white-space: nowrap;
    font-size: .85rem;
    flex-shrink: 0;
}
.song-actions a { color: var(--text-muted); font-weight: 500; transition: color var(--transition); }
.song-actions a:hover { color: var(--primary); text-decoration: none; }

.song-meta-line { color: var(--text-muted); margin-top: .2rem; font-size: .9rem; }
.song-meta-line span + span::before { content: ' · '; color: var(--text-light); }
.song-description { color: var(--text-muted); margin-top: .5rem; font-size: .92rem; }

/* ── Staff notation ──────────────────────────────────────────────────── */
.staff-section {
    margin-top: 2rem;
    overflow-x: auto;
    display: flex;
    justify-content: center;
}

#staff-output, #staff-preview {
    background: var(--bg-card);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    display: inline-block;
    max-width: 100%;
    box-shadow: var(--shadow-sm);
}

.sheet-row { display: block; margin-bottom: .25rem; }
#staff-output.tabs-only .sheet-row svg { display: none; }
.diagram-strip { overflow: visible; }
.note-diagram { display: block; }

/* ── Ocarina SVG ─────────────────────────────────────────────────────── */
.ocarina-diagram { display: inline-flex; align-items: center; justify-content: center; }
.ocarina-img { width: 160px; height: auto; display: block; }
.ocarina-svg { width: 215px; height: 90px; display: block; }
.oc-body      { fill: white; stroke: black; stroke-width: 2.5; stroke-linejoin: round; }
.oc-blow-hole { fill: black; stroke: black; stroke-width: 1; }
.oc-separator { stroke: #aaa; stroke-width: 1; stroke-dasharray: 3 3; }
.oc-hole      { stroke: black; stroke-width: 2; }
.oc-hole.covered { fill: black; }
.oc-hole.open    { fill: white; }
.oc-label {
    font-family: system-ui, sans-serif;
    font-size: 11px;
    font-weight: 700;
    fill: black;
    text-anchor: middle;
    dominant-baseline: auto;
}

/* ── Tab grid ────────────────────────────────────────────────────────── */
.tab-grid { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.5rem; }
.tab-section h2 { margin-top: 1.5rem; margin-bottom: .5rem; }

/* ── Editor ──────────────────────────────────────────────────────────── */
.subtitle { color: var(--text-muted); margin-top: -.5rem; margin-bottom: 1.5rem; }

/* Toolbar */
.editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem 2rem;
    align-items: center;
    padding: .65rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 1.25rem;
    user-select: none;
}
.toolbar-group   { display: flex; align-items: center; gap: .5rem; }
.toolbar-label   { font-size: .78rem; font-weight: 600; color: var(--text-muted); white-space: nowrap; }
.btn-toolbar     { display: inline-flex; gap: .2rem; }
.btn-tool {
    background: var(--bg-tinted);
    border: 1.5px solid var(--border);
    color: var(--text);
    font-size: .82rem;
    padding: .2rem .65rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background .1s, border-color .1s, color .1s;
}
.btn-tool:hover  { background: var(--primary-light); border-color: var(--primary); }
.btn-tool.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* Staff canvas */
.staff-canvas {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow-x: auto;
    padding: .5rem 0 .5rem;
    user-select: none;
    cursor: crosshair;
}
.staff-canvas svg { display: block; }

/* ── Login page ──────────────────────────────────────────────────────── */
.login-wrap {
    max-width: 420px;
    margin: 4rem auto;
    background: var(--bg-card);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 2.25rem 2.5rem;
    box-shadow: var(--shadow-lg);
    text-align: center;
}
.login-wrap h1 { margin-bottom: 1.5rem; font-size: 1.75rem; font-weight: 800; }
.login-form { text-align: left; }
.login-form .form-actions { justify-content: stretch; margin-top: 1.5rem; }
.login-form .form-actions .btn { width: 100%; justify-content: center; padding: .65rem; }

/* ── Alerts ──────────────────────────────────────────────────────────── */
.alert {
    padding: .75rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: .9rem;
}
.alert-error   { background: #fff5f5; color: #9B1C1C; border: 1.5px solid #FCA5A5; }
.alert-warning { background: #FFFBEB; color: #92400E; border: 1.5px solid #FCD34D; }
.alert-info    { background: var(--primary-light); color: var(--primary-dark); border: 1.5px solid #F9D891; }

/* ── Empty state ─────────────────────────────────────────────────────── */
.empty-state {
    background: var(--bg-card);
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 3rem 2rem;
    text-align: center;
    color: var(--text-muted);
}


/* ── Badges ──────────────────────────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: .18em .55em;
    font-size: .72rem;
    font-weight: 700;
    border-radius: 999px;
    vertical-align: middle;
    letter-spacing: .03em;
}
.badge-draft { background: #FEF3C7; color: #92400E; border: 1px solid #FCD34D; }

/* ── Footer ──────────────────────────────────────────────────────────── */
.site-footer {
    background: var(--header-bg);
    background-image: repeating-linear-gradient(
        transparent, transparent 17px,
        rgba(255,255,255,.03) 17px, rgba(255,255,255,.03) 18px
    );
    color: rgba(238,232,216,.6);
    padding: 1.1rem 1.75rem;
}
.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.footer-feedback {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    flex: 1 1 420px;
}
.footer-brand { font-weight: 700; color: var(--accent); font-size: .9rem; }
.footer-links { display: flex; gap: 1.25rem; margin-left: auto; }
.footer-links a { color: rgba(238,232,216,.55); font-size: .85rem; transition: color var(--transition); }
.footer-links a:hover { color: var(--header-fg); text-decoration: none; }

/* ── Legal pages ─────────────────────────────────────────────────────── */
.contact-hidden {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    background: var(--bg-tinted);
    border: 1.5px dashed var(--border);
    border-radius: var(--radius-sm);
    padding: .15rem .6rem;
    cursor: pointer;
    font-size: .875rem;
    color: var(--text-muted);
    user-select: none;
    transition: background var(--transition), border-color var(--transition);
}
.contact-hidden:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary-dark); }

.legal-page { max-width: 800px; }
.legal-page h1 { font-size: 2rem; font-weight: 800; margin-bottom: 1.75rem; }
.legal-page h2 {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 2.25rem 0 .6rem;
    padding-bottom: .4rem;
    border-bottom: 2px solid var(--border);
}
.legal-page h3 { font-size: .97rem; margin: 1.25rem 0 .4rem; font-weight: 600; }
.legal-page p, .legal-page ul { color: var(--text-muted); margin-bottom: .85rem; }
.legal-page ul { padding-left: 1.5rem; }
.legal-page li { margin-bottom: .4rem; }
.legal-note {
    background: #FFFBEB;
    border: 1.5px solid #FCD34D;
    border-radius: var(--radius-sm);
    padding: .65rem 1rem;
    margin-bottom: 1.5rem;
    font-size: .9rem;
    color: #92400E;
}
.legal-page h3 { font-size: .97rem; margin: 1.25rem 0 .4rem; font-weight: 600; }
.legal-page p, .legal-page ul { color: var(--text-muted); margin-bottom: .85rem; }
.legal-page ul { padding-left: 1.5rem; }
.legal-page li { margin-bottom: .4rem; }
.legal-note {
    background: #FFFBEB;
    border: 1.5px solid #FCD34D;
    border-radius: var(--radius-sm);
    padding: .65rem 1rem;
    margin-bottom: 1.5rem;
    font-size: .9rem;
    color: #92400E;
}

/* ── Error page ──────────────────────────────────────────────────────── */
.error-page { text-align: center; padding: 5rem 1rem; }
.error-code {
    font-size: 7rem;
    font-weight: 900;
    color: var(--border);
    line-height: 1;
    letter-spacing: -.05em;
}
.error-title { font-size: 1.75rem; font-weight: 700; margin: .5rem 0 1rem; }
.error-message { color: var(--text-muted); margin-bottom: 2rem; }

/* ── Print ───────────────────────────────────────────────────────────── */
@media print {
    .site-header, .site-footer,
    .page-actions, .octave-toggle,
    .nav-search, .btn { display: none !important; }

    body { background: #fff; }

    .staff-section { zoom: 0.75; justify-content: flex-start; }
    .sheet-row { break-inside: avoid; page-break-inside: avoid; }
    svg, .note-diagram { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}