/* ═══════════════════════════════════════════════════════════════════════════════
   ASCII ART ENGINE - Styles
   ═══════════════════════════════════════════════════════════════════════════════ */

/* Main Studio Layout */
.ascii-art-studio {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 20px;
    margin: 20px 0;
    align-items: start;
}

/* Controls Panel */
.ascii-controls {
    position: sticky;
    top: 20px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
}

.ascii-controls-body {
    padding: 20px;
}

/* Input with Button */
.input-with-button {
    display: flex;
    gap: 8px;
}

.input-with-button input {
    flex: 1;
}

/* Mode Tabs */
.ascii-mode-tabs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    margin-top: 8px;
}

.ascii-mode-tab {
    background: rgba(var(--primary-rgb), 0.05);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 8px 12px;
    font-family: var(--ascii-font-family);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.ascii-mode-tab:hover {
    border-color: var(--primary-color);
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--text-primary);
    box-shadow: 0 0 8px rgba(var(--primary-rgb), 0.2);
}

.ascii-mode-tab.active {
    border-color: var(--primary-color);
    background: rgba(var(--primary-rgb), 0.2);
    color: var(--primary-color);
    box-shadow: 0 0 12px rgba(var(--primary-rgb), 0.4);
    text-shadow: 0 0 5px var(--primary-color);
}

/* Checkbox Label */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
    cursor: pointer;
}

.checkbox-label span {
    color: var(--text-secondary);
    font-size: 13px;
}

.checkbox-label input[type="checkbox"]:checked + span {
    color: var(--primary-color);
    text-shadow: 0 0 5px var(--primary-color);
}

/* Range Slider */
input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    cursor: pointer;
    border-radius: 50%;
    box-shadow: 0 0 8px var(--primary-color);
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    cursor: pointer;
    border-radius: 50%;
    border: none;
    box-shadow: 0 0 8px var(--primary-color);
}

input[type="range"]:hover::-webkit-slider-thumb {
    background: var(--torch-gold);
    box-shadow: 0 0 12px var(--torch-gold);
}

input[type="range"]:hover::-moz-range-thumb {
    background: var(--torch-gold);
    box-shadow: 0 0 12px var(--torch-gold);
}

/* Export Actions */
.ascii-export-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px dashed var(--border);
}

/* Preview Area */
.ascii-preview-area {
    min-height: 600px;
}

.ascii-preview-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 20px;
}

/* Image Preview */
.ascii-image-preview {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    padding: 15px;
    border-radius: 4px;
}

.ascii-preview-image {
    max-width: 100%;
    max-height: 500px;
    object-fit: contain;
    border: 1px solid var(--border);
    box-shadow: 0 0 20px rgba(var(--primary-rgb), 0.2);
}

/* ASCII Output */
.ascii-output-container {
    display: flex;
    flex-direction: column;
    min-height: 300px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border);
    padding: 15px;
    border-radius: 4px;
    overflow: auto;
}

.ascii-output {
    font-family: var(--ascii-font-family);
    font-size: 10px;
    line-height: 1;
    color: var(--primary-color);
    white-space: pre;
    overflow: auto;
    margin: 0;
    padding: 0;
    letter-spacing: 0;
    text-shadow: 0 0 3px var(--primary-color);
    max-height: 70vh;
}

.ascii-output:empty::before {
    content: 'ASCII output will appear here...';
    color: var(--text-secondary);
    font-size: 12px;
    white-space: normal;
    display: block;
    text-align: center;
    padding: 40px 20px;
}

/* Loading state */
.ascii-output .loading {
    color: var(--text-secondary);
    font-size: 14px;
    text-align: center;
    display: block;
    padding: 40px;
}

.ascii-output .loading::after {
    content: '...';
    animation: blink 1s infinite;
}

/* Error state */
.ascii-output .error {
    color: var(--red);
    font-size: 13px;
    text-align: center;
    display: block;
    padding: 40px 20px;
    border: 1px solid var(--red);
    text-shadow: 0 0 8px var(--red);
}

/* Scrollbar styling for output */
.ascii-output::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.ascii-output::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
}

.ascii-output::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    box-shadow: 0 0 5px var(--primary-color);
}

.ascii-output::-webkit-scrollbar-thumb:hover {
    background: var(--torch-gold);
    box-shadow: 0 0 8px var(--torch-gold);
}

/* File Input Styling */
input[type="file"] {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-primary);
    border: 1px dashed var(--primary-color);
    color: var(--text-primary);
    font-family: var(--ascii-font-family);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s ease;
}

input[type="file"]:hover {
    border-color: var(--torch-gold);
    background: rgba(var(--primary-rgb), 0.05);
    box-shadow: 0 0 10px rgba(var(--primary-rgb), 0.2);
}

input[type="file"]::file-selector-button {
    background: rgba(var(--primary-rgb), 0.1);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 6px 12px;
    margin-right: 10px;
    cursor: pointer;
    font-family: var(--ascii-font-family);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.2s ease;
}

input[type="file"]::file-selector-button:hover {
    background: rgba(var(--primary-rgb), 0.2);
    box-shadow: 0 0 8px rgba(var(--primary-rgb), 0.3);
    text-shadow: 0 0 4px var(--primary-color);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .ascii-art-studio {
        grid-template-columns: 350px 1fr;
    }

    .ascii-preview-body {
        grid-template-columns: 1fr;
    }

    .ascii-output {
        max-height: 500px;
    }
}

@media (max-width: 900px) {
    .ascii-art-studio {
        grid-template-columns: 1fr;
    }

    .ascii-controls {
        position: static;
        max-height: none;
    }

    .ascii-mode-tabs {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .ascii-mode-tabs {
        grid-template-columns: 1fr;
    }

    .ascii-export-actions {
        flex-direction: column;
    }

    .ascii-export-actions .btn {
        width: 100%;
    }

    .ascii-output {
        font-size: 8px;
    }
}

@media (max-width: 480px) {
    .ascii-art-studio {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .ascii-controls {
        position: static;
        padding: 10px;
    }

    .ascii-mode-tabs {
        grid-template-columns: 1fr;
    }

    .ascii-output {
        font-size: 6px;
        padding: 8px;
    }

    .ascii-export-actions {
        flex-direction: column;
    }

    .ascii-export-actions .btn {
        width: 100%;
    }
}

/* Animations */
@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.3; }
}

/* ASCII Art Zoom on Hover */
.ascii-output:hover {
    box-shadow: inset 0 0 20px rgba(var(--primary-rgb), 0.1);
}

/* Custom Select Dropdown */
select#ascii-ramp {
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

select#ascii-ramp option {
    background: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    padding: 8px;
}

/* Color Mode ASCII Output */
.ascii-output[data-mode="color"] {
    background: #000;
}

/* Braille Mode ASCII Output */
.ascii-output[data-mode="braille"] {
    font-size: 8px;
    letter-spacing: -1px;
}

/* Edge Detection Mode */
.ascii-output[data-mode="edges"] {
    color: var(--torch-gold);
    text-shadow: 0 0 5px var(--torch-gold);
}

/* Dithering Modes */
.ascii-output[data-mode="floyd"],
.ascii-output[data-mode="bayer"],
.ascii-output[data-mode="atkinson"] {
    color: var(--text-primary);
    text-shadow: 0 0 2px var(--primary-color);
}

/* Empty State Enhancement */
.ascii-image-preview .empty-state {
    text-align: center;
    padding: 60px 20px;
}

.ascii-image-preview .empty-state h3 {
    color: var(--primary-color);
    text-shadow: 0 0 8px var(--primary-color);
    margin-bottom: 15px;
    font-size: 16px;
    letter-spacing: 2px;
}

.ascii-image-preview .empty-state p {
    color: var(--text-secondary);
    font-size: 13px;
    margin: 0;
}

/* Convert Button Enhancement */
#ascii-convert-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

#ascii-convert-btn:not(:disabled):hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 0 20px rgba(var(--primary-rgb), 0.6);
}

/* Preview Grid Animation */
.ascii-preview-body {
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Success/Error Toast Integration */
.ascii-controls-body .btn-primary:active {
    animation: pulse 0.3s ease;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(0.95); }
}