:root {
    --primary-bg: #f4f4f4;
    --secondary-bg: #ffffff;
    --text-color: #1a1a1a;
    --accent-color: #007bff;
    --border-color: #ddd;
    --input-bg: #e9e9e9;
}

body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--primary-bg);
    overflow: hidden;
}

#main-container {
    display: flex;
    width: 100%;
    height: 100%;
}

#viewer-container {
    flex-grow: 1;
    height: 100%;
    position: relative;
}

#c {
    display: block;
    width: 100%;
    height: 100%;
}

#configurator-container {
    width: 350px;
    flex-shrink: 0;
    background-color: var(--secondary-bg);
    padding: 2rem;
    box-sizing: border-box;
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 1rem; /* Leicht reduziert für bessere Kompaktheit */
    box-shadow: -5px 0 15px rgba(0,0,0,0.05);
    overflow-y: auto;
    position: relative; /* Für die Positionierung von Overlays */
}

h1 {
    margin-top: 0;
    margin-bottom: 0; /* Abstand wird durch gap geregelt */
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.section-title {
    margin-top: 0.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    font-weight: bold;
    color: #333;
    font-size: 1.1rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-group label {
    font-weight: bold;
    font-size: 0.9rem; /* Leicht verkleinert */
}

.control-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 1rem;
    background-color: var(--input-bg);
    cursor: pointer;
}

/* Styling für Inputs mit Einheit (m) */
.input-with-unit {
    display: flex;
    align-items: center;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.input-with-unit input[type="number"] {
    flex-grow: 1;
    border: none;
    background: transparent;
    padding: 0.5rem;
    font-size: 1rem;
    width: 100%;
    -moz-appearance: textfield; /* Firefox */
}
.input-with-unit input[type="number"]::-webkit-outer-spin-button,
.input-with-unit input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}


.input-with-unit span {
    padding: 0 0.75rem;
    font-family: monospace;
    color: #666;
}

/* Styling für den Range-Slider */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    background: var(--input-bg);
    outline: none;
    border-radius: 4px;
    opacity: 0.9;
    transition: opacity .2s;
    margin-top: 0.5rem;
}

input[type="range"]:hover { opacity: 1; }

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent-color);
    cursor: pointer;
    border-radius: 50%;
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--accent-color);
    cursor: pointer;
    border-radius: 50%;
}

#distributionRatio-value {
    align-self: flex-end;
    font-family: monospace;
}

/* Styling für den Modus-Umschalter */
.input-toggle {
    display: flex;
    align-items: center;
}

.mode-switch {
    display: none; /* Checkbox verstecken */
}

.switch-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
    color: #555;
}

.switch {
    position: relative;
    display: inline-block;
    width: 34px;
    height: 20px;
    background-color: #ccc;
    border-radius: 20px;
    transition: background-color 0.2s;
    margin-right: 8px;
}

.switch::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: white;
    top: 2px;
    left: 2px;
    transition: transform 0.2s;
}

.mode-switch:checked + .switch-label .switch {
    background-color: var(--accent-color);
}

.mode-switch:checked + .switch-label .switch::after {
    transform: translateX(14px);
}

.sub-options {
    padding-left: 1rem;
    margin-top: 0.75rem;
    flex-direction: column;
    gap: 0.75rem;
    border-left: 2px solid #eee;
}

/* Responsive Design */
@media (max-width: 768px) {
    #main-container { flex-direction: column; }
    #configurator-container {
        width: 100%;
        height: auto;
        border-left: none;
        border-top: 1px solid var(--border-color);
        box-shadow: none;
    }
}

/* Lade-Overlay */
#loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(4px); /* Moderner "Frosted Glass"-Effekt */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
    opacity: 1;
    visibility: visible;
}

#loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none; /* Verhindert Interaktion, wenn unsichtbar */
}

.spinner {
    width: 60px;
    height: 60px;
    border: 6px solid rgba(0, 0, 0, 0.1);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* --- Konfigurationsseite --- */
.config-page-container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: var(--secondary-bg);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.config-page-container h1, .config-page-container h2 {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
    color: var(--text-color);
}

.form-container, .settings-container { display: none; }

.form-group { margin-bottom: 1.5rem; }

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    font-size: 0.9rem;
}

.form-group input[type="password"], 
.form-group input[type="number"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 1rem;
    background-color: var(--input-bg);
}

.button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    background-color: var(--accent-color);
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    text-align: center;
    text-decoration: none;
    transition: background-color 0.2s;
}

.button:hover {
    background-color: #005eb8; /* Etwas dunklerer Blauton */
}

.error-message {
    color: #d93025;
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.constraints-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.constraint-group .input-pair {
    display: flex;
    gap: 1rem;
}

.validation-error {
    color: #d93025;
    font-size: 0.85rem;
    margin-top: 0.25rem;
    padding-left: 0.2rem;
}

.config-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(3px);
    z-index: 20;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 1rem;
    border-radius: inherit;
    color: var(--text-color);
    font-weight: bold;
    flex-direction: column;
    transition: opacity 0.3s, visibility 0.3s;
    opacity: 1;
    visibility: visible;
}

.config-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.overlay-content {
    background-color: var(--secondary-bg);
    color: var(--text-color);
    padding: 2.5rem;
    border-radius: 12px;
    text-align: center;
    max-width: 400px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* New: Orientation Overlay */
#orientation-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8); /* Darker background */
    backdrop-filter: blur(5px); /* Stronger blur */
    justify-content: center; /* Use flex properties */
    align-items: center;
    z-index: 100; /* Higher z-index than loading overlay */
    color: white;
    text-align: center;
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
    opacity: 1;
    visibility: visible;
    /* Initially hidden by default, JS will toggle 'hidden' class */
    display: none; /* Default to hidden, media query will override */
}

#orientation-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    display: none !important; /* Ensure it's truly hidden when JS says so */
}

#orientation-overlay .overlay-content {
    background-color: rgba(255, 255, 255, 0.1); /* Slightly transparent white */
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    max-width: 80%;
}

#orientation-overlay h2 {
    margin-top: 0;
    font-size: 1.8rem;
    color: white;
}

#orientation-overlay p {
    font-size: 1.1rem;
    line-height: 1.5;
    color: #f0f0f0;
}

/* Show the overlay only on small screens in portrait mode */
@media (max-width: 768px) and (orientation: portrait) {
    #orientation-overlay {
        display: flex; /* Override default 'display: none' */
    }
}
}