body {
    background-color: #222d40; /* Dunkles Blaugrau wie pentoma.de */
    margin: 0;
    padding: 20px 0;
}

/* Mindestbreite für fixes Layout */
html, body {
    min-width: 1150px;
    overflow-x: auto;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid red;
}

.validation-message {
    color: red;
}

#blazor-error-ui {
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

    #blazor-error-ui .dismiss {
        cursor: pointer;
        position: absolute;
        right: 0.75rem;
        top: 0.5rem;
    }

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.loading-progress {
    position: relative;
    display: block;
    width: 8rem;
    height: 8rem;
    margin: 20vh auto 1rem auto;
}

    .loading-progress circle {
        fill: none;
        stroke: #e0e0e0;
        stroke-width: 0.6rem;
        transform-origin: 50% 50%;
        transform: rotate(-90deg);
    }

        .loading-progress circle:last-child {
            stroke: #1b6ec2;
            stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
            transition: stroke-dasharray 0.05s ease-in-out;
        }

.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: bold;
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
}

    .loading-progress-text:after {
        content: var(--blazor-load-percentage-text, "Loading");
    }

code {
    color: #c02d76;
}

.tetracube-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
    background-color: #e8e8e8; /* Helles Grau (war white) */
    border: 2px solid #999;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.header {
    text-align: center;
    margin-bottom: 20px;
    margin-top: 0; /* ← Neu hinzufügen */
}

    .header h1 {
        margin-top: 10px; /* ← Neu hinzufügen, verringert oberen Abstand */
    }

.grid-row {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    justify-content: center; /* Zentriert die 5 Layer */
}

.layer-grid {
    flex-shrink: 0;
}

    .layer-grid h3 {
        text-align: center;
        margin: 0 0 10px 0;
        font-size: 16px;
    }

/* Button Grid Styles */
.button-grid {
    display: inline-block;
}

.button-row {
    display: flex;
    line-height: 0;
}

.grid-button {
    width: 25px;
    height: 25px;
    border: 1px solid #666;
    background-color: white;
    padding: 0;
    margin: 0;
    cursor: pointer;
}

    .grid-button:hover {
        background-color: #f0f0f0;
    }

    .grid-button.selected {
        background-color: #4CAF50;
    }

    .grid-button:disabled {
        cursor: not-allowed;
        opacity: 0.6;
    }

/* Short Manual Styles */
.short-manual {
    margin-top: 30px;
    padding: 15px;
    background-color: #f5f5f5;
    border: 1px solid #ccc;
    border-radius: 5px;
}

    .short-manual h3 {
        margin-top: 0;
        font-size: 18px;
    }

    .short-manual p {
        margin: 8px 0;
        line-height: 1.5;
    }

.control-row {
    display: flex;
    gap: 10px;
    margin-top: 10px;
    margin-bottom: 20px;
    justify-content: center; /* jetzt zentriert */
    align-items: flex-start;
}

/* Breiten für die 4 Bereiche in Zeile 2 */
.tetracubes-display {
    width: 250px; /* war 220px → +30px */
    height: 250px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}

.short-manual-section {
    width: 380px;
    height: 280px; /* von 250px → 280px */
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}

.short-manual {
    padding: 10px;
    background-color: #f5f5f5;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin-top: 0; /* von 5px → 0px */
    flex-grow: 1;
    overflow-y: auto;
}

    .short-manual p {
        margin: 6px 0;
        font-size: 13px;
        line-height: 1.4;
    }

.example-figures {
    width: 190px;
    height: 250px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center; /* ← DIESE ZEILE HINZUFÜGEN */
}

.controls {
    width: 180px;
    height: 250px; /* ← Neu: Feste Höhe */
    flex-shrink: 0;
    display: flex; /* ← Neu */
    flex-direction: column; /* ← Neu */
}

.tetracubes-display,
.example-figures,
.controls {
    flex-shrink: 0;
}

.control-row h3 {
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 16px;
    text-align: center; /* Zentriert die Überschriften */
}

/* Controls Styles */
.controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
}

/* Überschriften in der 2. Zeile - kein oberer Abstand */
.control-row h3 {
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 16px;
}

.field-counter {
    font-size: 32px;
    font-weight: bold;
    width: 120px;
    text-align: center;
    margin-top: -15px; /* war 0 → -10px zieht es nach oben */
}

    .field-counter.counter-valid {
        color: #2E7D32; /* Grün bei 32 */
    }

    .field-counter.counter-invalid {
        color: #D32F2F; /* Rot bei ≠ 32 */
    }

.control-button {
    width: 120px;
    height: 40px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    border: 2px solid #333;
    border-radius: 5px;
}

.reset-button {
    background-color: #222d40; /* wie andere Buttons */
    color: white;
}

    .reset-button:hover {
        background-color: #4a5f7f; /* heller beim Hover */
    }

.start-button {
    background-color: #4CAF50;
    color: white;
}

.reset-button:disabled,
.nav-button:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.start-button:hover {
    background-color: #45a049;
}

.solution-info {
    font-size: 14px;
    text-align: center;
    margin-top: 10px;
}

.navigation-buttons {
    display: flex;
    gap: 10px;
}

.nav-button {
    width: 55px;
    height: 35px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    border: 2px solid #333;
    background-color: white;
    border-radius: 5px;
}

    .nav-button:hover {
        background-color: #e0e0e0;
    }

/* Example Figures Styles */
.example-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 5px;
}

.example-button {
    width: 56px; /* war 50px → +6px */
    height: 56px; /* war 50px → +6px */
    padding: 3px; /* war 2px → +1px mehr Rand */
    cursor: pointer;
    border: 2px solid #333;
    background-color: white;
    border-radius: 3px;
}

    .example-button:disabled {
        cursor: not-allowed;
        opacity: 0.6;
    }

    .example-button:hover {
        background-color: #f0f0f0;
        border-color: #4CAF50;
    }

    .example-button img {
        width: 100%;
        height: 100%;
        object-fit: contain;
    }
/* Tetracubes Display Styles */
.tetracubes-image {
    width: 250px; /* war 220px → +30px */
    height: 187px; /* war 165px → proportional angepasst */
    display: flex;
    align-items: center;
    justify-content: center;
}

    .tetracubes-image img {
        max-width: 100%; /* Bild darf nicht breiter als Container */
        max-height: 100%; /* Bild darf nicht höher als Container */
        object-fit: contain;
    }

/* Start Button Zustände */
.start-button.start-disabled {
    background-color: #CCCCCC;
    cursor: not-allowed;
}

.start-button.start-ready {
    background-color: #4CAF50;
}

.start-button.start-running {
    background-color: #FFEB3B;
    color: #000;
}

.back-button {
    display: inline-block;
    background-color: #ffffff;
    color: #222d40;
    font-size: 18px;
    font-weight: bold;
    padding: 10px 26px;
    text-decoration: none;
    border: 2px solid #222d40;
    border-radius: 5px;
    transition: all 0.3s;
}

    .back-button:hover {
        background-color: #222d40;
        color: #ffffff;
        text-decoration: none;
    }

.back-icon {
    font-size: 24px;
    margin-right: 8px;
}