/* --- CSS Reset & Variables --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-main: #121214;
    --bg-sidebar: #1a1a1e;
    --bg-control: #26262b;
    --border-color: #323238;
    --text-primary: #f1f1f3;
    --text-secondary: #94949e;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
    
    --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-family);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* --- Top Header Navigation --- */
.app-header {
    background-color: var(--bg-sidebar);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.5rem;
    height: 60px;
    flex-shrink: 0;
}

.header-logo {
    font-size: 1.25rem;
    letter-spacing: -0.025em;
}

.header-logo span {
    color: var(--accent-color);
}

.header-nav, .header-legal {
    display: flex;
    gap: 1.25rem;
}

.nav-link, .legal-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-link:hover, .legal-link:hover {
    color: var(--text-primary);
}

.nav-link.active {
    color: var(--accent-color);
}

/* --- Main Layout Grid --- */
.app-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    height: calc(100vh - 60px);
    overflow: hidden;
}

/* --- Sidebar (Scrollable Controls) --- */
.sidebar {
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    position: relative;
}

.settings-section {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.section-title {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* --- Form Controls & Custom Dropdown --- */
.form-group {
    margin-bottom: 1rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.375rem;
}

.form-control {
    width: 100%;
    background-color: var(--bg-control);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 0.625rem;
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* KORREKTUR 2: Custom Dropdown Styling exakt passend zur Design-Line */
.custom-dropdown {
    position: relative;
    width: 100%;
    font-family: inherit;
}

.dropdown-trigger {
    width: 100%;
    background-color: var(--bg-control);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 0.625rem;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: border-color 0.2s ease;
}

.dropdown-trigger:hover {
    border-color: var(--text-secondary);
}

.custom-dropdown.open .dropdown-trigger {
    border-color: var(--accent-color);
}

.dropdown-arrow {
    font-size: 0.75rem;
    color: var(--text-secondary);
    transition: transform 0.2s ease;
}

.custom-dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 4px); /* Garantiert direkt unter dem Feld */
    left: 0;
    width: 100%;
    background-color: var(--bg-control);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: var(--shadow-sm);
    z-index: 100;
    max-height: 250px;
    overflow-y: auto;
    display: none;
    list-style: none;
    padding: 4px 0;
}

.custom-dropdown.open .dropdown-menu {
    display: block;
}

.dropdown-item {
    padding: 0.625rem;
    font-size: 0.95rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.dropdown-item:hover {
    background-color: var(--border-color);
    color: var(--accent-color);
}

.dropdown-item.active {
    background-color: var(--accent-color);
    color: #ffffff;
}

/* --- Sticky Download Area --- */
.download-zone {
    position: sticky;
    bottom: 0;
    margin-top: auto;
    background-color: var(--bg-sidebar);
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    z-index: 10;
}

.btn {
    display: block;
    width: 100%;
    border: none;
    border-radius: 6px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #ffffff;
}

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

/* --- Preview Stage (Right Side) --- */
.preview-stage {
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 2rem;
    align-items: center;
}

.seo-header {
    width: 100%;
    max-width: 800px;
    margin-bottom: 2rem;
    text-align: left;
}

.main-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.sub-text {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.5;
}

/* Container, der das Blatt hält (sorgt für Scrollbalken, falls der Bildschirm zu klein ist) */
.canvas-container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    box-sizing: border-box;
    background-color: #f0f0f0; /* Leicht grauer Hintergrund, damit sich das weiße A4-Blatt abhebt */
    overflow: auto;
    box-shadow: var(--shadow-sm);
    background: transparent !important;
}

/* Das eigentliche Canvas im A4-Format */
canvas {
    background: #ffffff;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15); /* Typischer "Blatt-Schatten" */
    
    /* Hier erzwingen wir das A4-Format im Browser */
    width: 100%;
    max-width: 800px; /* Kannst du anpassen (z.B. 210mm oder 794px für exakte Pixel-Präzision) */
    aspect-ratio: 1 / 1.4142; /* Exaktes A4-Verhältnis (Breite zu Höhe) */
    
    display: block;
}

#custom-lines-container {
    display: flex;
    flex-direction: column;
    margin-top: 0.5rem;
}

.custom-line-item {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.25rem 0; /* Vertikaler Abstand für klare Trennung */
}

/* Jede nachfolgende Linie bekommt eine feine, dezente Trennlinie nach oben */
.custom-line-item ~ .custom-line-item {
    border-top: 1px dashed var(--border-color);
}

.custom-line-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.custom-line-header h4 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    font-weight: 600;
}

.remove-line-btn {
    background: none;
    border: none;
    color: #ff4d4d;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0;
    transition: opacity 0.2s;
}

.remove-line-btn:hover {
    opacity: 0.8;
    text-decoration: underline;
}

/* Nutzt exakt dieselben Abstände wie deine statischen .form-row */
.custom-line-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Verhält sich jetzt exakt wie deine globalen .form-control Elemente */
.form-control.custom-line-input {
    width: 100%;
    height: 38px;
    background-color: var(--bg-control); /* Identisch zu den oberen statischen Inputs */
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 0.625rem;
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

select.form-control.custom-line-input {
    padding-top: 0;
    padding-bottom: 0;
    padding-left: 0.5rem;
    padding-right: 1.75rem; /* Platz für den nativen Dropdown-Pfeil */
    line-height: 36px;      /* Zentriert den Text exakt vertikal */
    vertical-align: middle;
}

.form-control.custom-line-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* Farbpicker nahtlos eingepasst */
.form-control.custom-line-input.color-input {
    padding: 2px;
    cursor: pointer;
}

.custom-dropdown.inline-dropdown {
    width: 100%;
}

/* Stellt sicher, dass das Dropdown-Menü über den nachfolgenden Inputs schwebt */
.custom-dropdown.inline-dropdown .dropdown-menu {
    position: absolute;
    top: calc(100% + 2px);
    left: 0;
    width: 100%;
    z-index: 110; /* Höher als der Rest der Sidebar */
    background-color: var(--bg-control);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.6);
}

/* Verhindert Text-Clipping durch Zuweisung flexiblerer Innenabstände */
.custom-dropdown.inline-dropdown .dropdown-trigger {
    padding: 0.625rem 0.5rem;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.custom-dropdown.inline-dropdown .dropdown-item {
    padding: 0.5rem;
    font-size: 0.9rem;
}

/* Damit das absolute Menü korrekt verankert wird */
.custom-line-grid .form-group-compact {
    position: relative;
}

.settings-section input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background-color: var(--bg-control);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    display: inline-grid;
    place-content: center;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
}

.settings-section input[type="checkbox"]:checked {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

.settings-section input[type="checkbox"]:checked::before {
    content: "✓";
    font-size: 10px;
    color: #ffffff;
    font-weight: bold;
}

/* --- Music Section Core Custom Styles --- */
#music-clef-dropdown-container {
    position: relative;
    width: 100%;
}

#music-clef-dropdown-container .dropdown-trigger {
    background-color: var(--bg-control);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.625rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

#music-clef-dropdown-container .dropdown-trigger:hover {
    border-color: var(--accent-color);
}

#music-clef-dropdown-container .dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    width: 100%;
    z-index: 150; /* Garantiert freies Schweben über den Elementen */
    background-color: var(--bg-control);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.6);
    list-style: none;
    padding: 0.25rem 0;
    margin: 0;
}

/* Öffnen-Zustand des Musik-Dropdowns */
#music-clef-dropdown-container.open .dropdown-menu {
    display: block;
}

#music-clef-dropdown-menu .dropdown-item {
    padding: 0.625rem 0.75rem;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.95rem;
    transition: background-color 0.15s;
}

#music-clef-dropdown-menu .dropdown-item:hover {
    background-color: var(--accent-color);
    color: #ffffff;
}

#musicGrandGap {
    width: 100%;
    background-color: var(--bg-control);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.625rem 0.75rem;
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

#musicGrandGap:focus {
    border-color: var(--accent-color);
    outline: none;
}

/* --- Mobile Optimierung (Handy Hochformat) --- */
.mobile-only {
    display: none;
}

.desktop-only {
    display: block;
}
.mobile-menu-btn {
    display: none;
}

.mobile-menu-container {
    display: flex;
    gap: 1.25rem;
}

@media (max-width: 768px) {
    .mobile-only {
        display: block;
        padding: 0.25rem 1rem; /* Deutlich kleineres Padding */
        background-color: var(--bg-main);
        height: 50px; /* Gleiche Höhe wie der Header */
        display: flex;
        flex-direction: column;
        justify-content: center;
        overflow: hidden; /* Verhindert, dass langer Text das Layout sprengt */
        margin-bottom: 0;
    }

    .mobile-only .main-title {
        font-size: 1.3rem; /* Viel kleinere Schrift */
        margin-bottom: 0;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .mobile-only .sub-text {
        display: none; /* Subtext auf dem Handy komplett ausblenden, um Platz zu sparen */
    }
    
    .desktop-only {
        display: none;
    }

    .mobile-menu-container {
        display: none; 
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: var(--bg-sidebar);
        flex-direction: column;
        padding: 1rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border-color);
        z-index: 1000;
        text-align: center;
    }

    .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        color: var(--text-primary);
        font-size: 1.5rem;
        cursor: pointer;
    }

    .app-container {
        display: block; 
        height: calc(100vh - 60px);
    }

    /* Sidebar 45% */
    .sidebar {
        height: 55%; 
        overflow-y: auto;
        border-right: none;
        border-bottom: 2px solid var(--border-color);
    }

    /* Vorschau 55% - Hintergrund beibehalten (Dark Mode) */
    .preview-stage {
        height: 45%; 
        background-color: var(--bg-main); /* Hier wieder Dark Mode statt grau */
        padding: 1rem;
        overflow-y: auto;
    }

    .download-zone {
        position: sticky;
        bottom: 0;
        background-color: var(--bg-sidebar);
        padding: 1rem;
        z-index: 200;
        border-top: 1px solid var(--border-color);
    }

    .settings-section:last-of-type {
        padding-bottom: 80px;
    }

    .header-nav, .header-legal {
        flex-direction: column;
        gap: 0.75rem;
    }
}


.unit-toggle-container {
    display: flex;
    margin-top: 1rem;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.unit-btn {
    flex: 1;
    padding: 0.5rem;
    background-color: var(--bg-control);
    color: var(--text-secondary); /* Gräulich/inaktiv */
    border: none;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.unit-btn.active {
    background-color: var(--accent-color); /* Dominante Farbe */
    color: #ffffff;
}

.unit-btn:not(.active):hover {
    background-color: var(--border-color);
    color: var(--text-primary);
}

/* Custom Stepper Buttons für Text-Inputs */
.input-stepper {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.input-stepper .form-control {
    padding-right: 24px !important;
}

.stepper-buttons {
    position: absolute;
    right: 4px;
    top: 3px;
    bottom: 3px;
    width: 18px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1px;
    z-index: 5;
}

.stepper-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    height: calc(50% - 1px);
    background: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 7px;
    cursor: pointer;
    padding: 0;
    border-radius: 2px;
    user-select: none;
}

.stepper-btn:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

/* --- Preview Stage --- */
.preview-stage {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-main);
    overflow: hidden;
    position: relative;
}

.canvas-container {
    background: #ffffff;
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: center;
    align-items: center;
    width: fit-content;
    margin-bottom: 3rem; /* Spürbarer Abstand nach unten, bevor die Links kommen */
}

#preview-canvas {
    display: block;
    max-width: 100%;
    height: auto !important; /* Verhindert Verzerrungen beim Skalieren */
}

/* Der Scroll-Container bewegt Überschrift, PDF und Links gemeinsam */
.preview-scroll-container {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

/* Dieser Wrapper sorgt dafür, dass Header, PDF und Links IMMER perfekt bündig stehen */
.preview-content-wrapper {
    width: 100%;
    max-width: 794px; /* Exakte Breite der A4-Vorschau */
    display: flex;
    flex-direction: column;
    align-items: flex-start; /* Richtet alles strikt linksbündig aus */
}

/* SEO-Header Anpassungen (Größer auf Desktop & exakt bündig) */
.preview-content-wrapper .seo-header {
    width: 100%;
    margin-bottom: 1.5rem;
}

.preview-content-wrapper .main-title {
    font-size: 2.5rem; /* Deutlich größer und fetter für große Bildschirme */
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.preview-content-wrapper .sub-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Canvas Container komplett transparent - kein falscher weißer Kasten mehr! */


/* Der weiße Hintergrund liegt JETZT NUR NOCH auf dem Papier selbst */
#preview-canvas {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto !important;
    background-color: #ffffff; /* Nur das Blatt ist weiß */
    border-radius: 4px;
}

/* --- Bot & SEO Links Grid (Exakt 3 Spalten, 2 Zeilen & absolut linksbündig) --- */
.bot-links-grid {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* 3 Spalten */
    grid-template-rows: repeat(2, auto);    /* 2 Zeilen */
    gap: 1rem 2rem;
}

.bot-links-grid a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-decoration: none;
    font-family: monospace;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bot-links-grid a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* Responsive Handling für mobile Geräte */
@media (max-width: 768px) {
    .preview-scroll-container {
        padding: 1.5rem 1rem;
    }
    .preview-content-wrapper .main-title {
        font-size: 1.8rem;
    }
    .bot-links-grid {
        grid-template-columns: 1fr; /* Auf Mobile untereinander */
        gap: 0.75rem;
    }
}

/* --- Download Modal Overlay --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.75); /* Dunkler, transparenter Hintergrund */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999; /* Über allem anderen */
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

/* Wenn das Modal aktiv ist */
.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* Modal Box */
.modal-content {
    background-color: var(--bg-sidebar); /* #1a1a1e */
    border: 1px solid var(--border-color); /* #323238 */
    border-radius: 8px;
    padding: 2rem;
    width: 90%;
    max-width: 420px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transform: translateY(-20px);
    transition: transform 0.25s ease;
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

/* Grüner Haken oder Icon */
.modal-icon {
    width: 50px;
    height: 50px;
    background-color: rgba(59, 130, 246, 0.1); /* Leicht transparentes Blau aus deinen Variablen */
    color: var(--accent-color); /* #3b82f6 */
    border: 2px solid var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1.25rem auto;
}

.modal-content h2 {
    color: var(--text-primary); /* #f1f1f3 */
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.modal-content p {
    color: var(--text-secondary); /* #94949e */
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
}

/* Close Button nutzt deine primäre Button-Struktur */
.modal-content .btn-primary {
    width: 100%;
    padding: 0.75rem;
    font-weight: 600;
}