/* ============================================
   ICO to ICNS Converter - macOS Theme
   Apple Blue: #007AFF | Sky: #5AC8FA
   ============================================ */

:root {
    --mac-blue: #007AFF;
    --mac-blue-dark: #0056B3;
    --mac-blue-light: #4DA3FF;
    --mac-sky: #5AC8FA;
    --mac-purple: #5856D6;
    --mac-pink: #FF2D55;
    --mac-green: #34C759;
    --mac-orange: #FF9500;
    --mac-gray: #8E8E93;
    --mac-gray-light: #F5F5F7;
    --mac-gray-dark: #1D1D1F;
    --mac-bg: #F5F5F7;
    --white: #FFFFFF;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
}

/* Tool Container */
.tool-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 30px 20px;
}

/* Header Section */
.tool-header {
    text-align: center;
    margin-bottom: 30px;
}

.tool-title-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 15px;
}

.tool-icon-wrapper {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.tool-icon-wrapper.mac-theme {
    background: linear-gradient(135deg, var(--mac-blue), var(--mac-sky));
    box-shadow: 0 4px 15px rgba(0, 122, 255, 0.3);
}

.tool-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--mac-gray-dark);
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
}

.tool-description {
    font-size: 1.1rem;
    color: var(--mac-gray);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Main Tool Area */
.tool-main {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 3rem;
    margin-bottom: 30px;
}

/* Upload Section */
.upload-section {
    margin-bottom: 25px;
}

.upload-area {
    border: 2px dashed var(--mac-blue);
    border-radius: var(--radius-md);
    padding: 50px 30px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.02), rgba(90, 200, 250, 0.02));
}

.upload-area:hover {
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.05), rgba(90, 200, 250, 0.05));
    border-color: var(--mac-blue-light);
}

.upload-area.drag-over {
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.1), rgba(90, 200, 250, 0.1));
    border-color: var(--mac-blue);
    border-style: solid;
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.upload-icon {
    color: var(--mac-blue);
    opacity: 0.8;
}

.upload-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--mac-gray-dark);
    margin: 0;
}

.upload-subtitle {
    color: var(--mac-gray);
    margin: 0;
}

.upload-hint {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--mac-gray);
    margin-top: 10px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 980px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--mac-blue), var(--mac-blue-dark));
    color: var(--white);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 122, 255, 0.4);
}

.btn-primary:disabled {
    background: var(--mac-gray);
    box-shadow: none;
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--mac-gray-light);
    color: var(--mac-gray-dark);
}

.btn-secondary:hover {
    background: #E8E8ED;
}

.btn-browse {
    margin-top: 10px;
}

/* Editor Section */
.editor-section {
    animation: fadeIn 0.4s ease;
}

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

/* Preview Panel */
.preview-panel {
    background: var(--mac-bg);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 25px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 10px;
}

.panel-header h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--mac-gray-dark);
    margin: 0;
}

.panel-header .file-info {
    font-size: 0.85rem;
    color: var(--mac-gray);
    background: var(--white);
    padding: 4px 12px;
    border-radius: 20px;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.preview-card {
    text-align: center;
}

.preview-mock {
    background: var(--white);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    padding: 15px;
    margin-bottom: 10px;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Finder Preview */
.finder-window {
    width: 100%;
    background: var(--mac-bg);
    border-radius: 8px;
    overflow: hidden;
    display: flex;
}

.finder-sidebar {
    width: 30%;
    background: rgba(0, 0, 0, 0.03);
    min-height: 80px;
}

.finder-content {
    flex: 1;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.finder-icon-item {
    text-align: center;
}

.finder-icon-item img {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    margin-bottom: 5px;
    background: var(--white);
}

.finder-icon-item span {
    display: block;
    font-size: 11px;
    color: var(--mac-gray-dark);
}

/* Dock Preview */
.dock-bar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 8px 12px;
    display: flex;
    gap: 8px;
    box-shadow: var(--shadow-md);
}

.dock-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
}

.dock-icon.placeholder {
    background: linear-gradient(135deg, #E8E8ED, #D1D1D6);
}

.dock-icon img,
img.dock-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--white);
}

/* Source Info Preview */
.source-info {
    flex-direction: column;
    padding: 20px;
}

.source-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
}

.source-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--mac-gray-dark);
}

.source-item strong {
    color: var(--mac-blue);
}

.preview-label {
    font-size: 0.85rem;
    color: var(--mac-gray);
    font-weight: 500;
}

/* Options Grid */
.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.option-card {
    background: var(--mac-bg);
    border-radius: var(--radius-md);
    padding: 20px;
}

.option-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    color: var(--mac-gray-dark);
}

.option-header h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

/* Preset Buttons */
.preset-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.preset-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border: 1px solid #E5E5E5;
    border-radius: 980px;
    background: var(--white);
    color: var(--mac-gray-dark);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.preset-btn:hover {
    border-color: var(--mac-blue);
    color: var(--mac-blue);
}

.preset-btn.active {
    background: var(--mac-blue);
    border-color: var(--mac-blue);
    color: var(--white);
}

/* Size Checkboxes */
.size-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 10px;
}

.size-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--white);
    border: 1px solid #E5E5E5;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.size-checkbox:hover {
    border-color: var(--mac-blue);
}

.size-checkbox input {
    display: none;
}

.size-checkbox input:checked + .checkbox-mark {
    background: var(--mac-blue);
    border-color: var(--mac-blue);
}

.size-checkbox input:checked + .checkbox-mark::after {
    display: block;
}

.size-checkbox input:checked ~ span:last-child {
    color: var(--mac-blue);
    font-weight: 600;
}

.checkbox-mark {
    width: 16px;
    height: 16px;
    border: 2px solid #D1D1D6;
    border-radius: 4px;
    position: relative;
    transition: var(--transition);
}

.checkbox-mark::after {
    content: '';
    position: absolute;
    display: none;
    left: 4px;
    top: 1px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.size-info {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--mac-gray);
    margin-top: 5px;
}

/* Mac Options */
.mac-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 15px;
}

.checkbox-option {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.checkbox-option input {
    display: none;
}

.checkbox-option input:checked + .checkbox-mark {
    background: var(--mac-blue);
    border-color: var(--mac-blue);
}

.checkbox-option input:checked + .checkbox-mark::after {
    display: block;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--mac-gray-dark);
}

/* Padding Option */
.padding-option {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.padding-option label {
    font-size: 0.9rem;
    color: var(--mac-gray-dark);
    white-space: nowrap;
}

.padding-option select {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid #E5E5E5;
    border-radius: var(--radius-sm);
    background: var(--white);
    font-size: 0.9rem;
    color: var(--mac-gray-dark);
    cursor: pointer;
}

.padding-option select:focus {
    outline: none;
    border-color: var(--mac-blue);
}

/* Radio Options (Scaling) */
.scaling-options,
.color-options {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.radio-option:hover {
    background: rgba(0, 122, 255, 0.05);
}

.radio-option input {
    display: none;
}

.radio-mark {
    width: 18px;
    height: 18px;
    border: 2px solid #D1D1D6;
    border-radius: 50%;
    position: relative;
    transition: var(--transition);
    flex-shrink: 0;
}

.radio-option input:checked + .radio-mark {
    border-color: var(--mac-blue);
}

.radio-option input:checked + .radio-mark::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--mac-blue);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.radio-label {
    display: flex;
    flex-direction: column;
}

.radio-label strong {
    font-size: 0.9rem;
    color: var(--mac-gray-dark);
}

.radio-label small {
    font-size: 0.8rem;
    color: var(--mac-gray);
}

/* Enhancement Options */
.enhancement-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Action Bar */
.action-bar {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 25px;
}

/* Progress */
.progress-container {
    margin-top: 20px;
    text-align: center;
}

.progress-bar {
    height: 8px;
    background: var(--mac-bg);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress {
    height: 100%;
    background: linear-gradient(90deg, var(--mac-blue), var(--mac-sky));
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    font-size: 0.9rem;
    color: var(--mac-gray);
}

/* Results Section */
.results-section {
    text-align: center;
    padding: 30px 0;
}

.result-success {
    margin-bottom: 25px;
}

.result-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--mac-green), #2FB84E);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    color: var(--white);
}

.result-title {
    font-size: 1.5rem;
    color: var(--mac-gray-dark);
    margin: 0 0 5px;
}

.result-subtitle {
    color: var(--mac-gray);
    margin: 0;
}

.download-btn {
    background: linear-gradient(135deg, var(--mac-green), #2FB84E);
    color: var(--white);
    padding: 14px 32px;
    border-radius: 980px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(52, 199, 89, 0.3);
    transition: var(--transition);
    margin-bottom: 20px;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 199, 89, 0.4);
}

.result-details {
    display: flex;
    justify-content: center;
    gap: 30px;
    padding-top: 15px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.result-detail {
    text-align: center;
}

.result-detail span {
    display: block;
    font-size: 0.8rem;
    color: var(--mac-gray);
    margin-bottom: 4px;
}

.result-detail strong {
    font-size: 1rem;
    color: var(--mac-gray-dark);
}

/* Error Message */
.error-message {
    background: rgba(255, 45, 85, 0.1);
    color: var(--mac-pink);
    padding: 15px 20px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Related Tools */
.related-tools {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 20px;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.related-label {
    font-weight: 600;
    color: var(--mac-gray-dark);
}

.related-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.related-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--mac-bg);
    border-radius: 980px;
    color: var(--mac-gray-dark);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.related-link:hover {
    background: var(--mac-blue);
    color: var(--white);
}

/* Info Sections */
.info-sections {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.info-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 30px;
    position: relative;
    overflow: hidden;
}

.info-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

.info-card h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    color: var(--mac-gray-dark);
    margin: 0 0 20px;
}

/* Steps List */
.steps-list {
    counter-reset: step;
    list-style: none;
    padding: 0;
    margin: 0;
}

.steps-list li {
    position: relative;
    padding-left: 50px;
    margin-bottom: 18px;
    counter-increment: step;
    line-height: 1.6;
}

.steps-list li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 32px;
    height: 32px;
    background: var(--mac-blue);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
}

.steps-list li:last-child {
    margin-bottom: 0;
}

/* Tips Grid */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.tip-item {
    display: flex;
    gap: 15px;
}

.tip-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--white);
}

.tip-icon.mac-blue {
    background: linear-gradient(135deg, var(--mac-blue), var(--mac-sky));
}

.tip-icon.mac-purple {
    background: linear-gradient(135deg, var(--mac-purple), #AF52DE);
}

.tip-icon.mac-green {
    background: linear-gradient(135deg, var(--mac-green), #30D158);
}

.tip-icon.mac-orange {
    background: linear-gradient(135deg, var(--mac-orange), #FF9F0A);
}

.tip-content h4 {
    font-size: 1rem;
    color: var(--mac-gray-dark);
    margin: 0 0 5px;
}

.tip-content p {
    font-size: 0.9rem;
    color: var(--mac-gray);
    margin: 0;
    line-height: 1.5;
}

.tip-content a {
    color: var(--mac-blue);
    text-decoration: none;
}

.tip-content a:hover {
    text-decoration: underline;
}

/* Comparison Table */
.comparison-table {
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid #E5E5E5;
}

.comparison-row {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
}

.comparison-row.header {
    background: var(--mac-bg);
    font-weight: 600;
}

.comparison-row:not(.header):nth-child(odd) {
    background: rgba(0, 122, 255, 0.02);
}

.comparison-cell {
    padding: 12px 15px;
    font-size: 0.9rem;
    border-bottom: 1px solid #E5E5E5;
}

.comparison-row:last-child .comparison-cell {
    border-bottom: none;
}

.comparison-cell.ico {
    text-align: center;
    color: var(--mac-orange);
}

.comparison-cell.icns {
    text-align: center;
    color: var(--mac-blue);
}

.comparison-row.header .comparison-cell.ico,
.comparison-row.header .comparison-cell.icns {
    color: var(--mac-gray-dark);
}

/* FAQ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.faq-item {
    background: var(--mac-bg);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 15px 20px;
    background: transparent;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--mac-gray-dark);
    text-align: left;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--mac-blue);
}

.faq-question svg {
    transition: transform 0.3s ease;
    color: var(--mac-gray);
    flex-shrink: 0;
}

.faq-item.open .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 20px 15px;
    margin: 0;
    color: var(--mac-gray);
    line-height: 1.6;
}

.faq-answer a {
    color: var(--mac-blue);
    text-decoration: none;
}

.faq-answer a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .tool-container {
        padding: 20px 15px;
    }
    
    .tool-title {
        font-size: 1.8rem;
    }
    
    .tool-main {
        padding: 20px;
    }
    
    .upload-area {
        padding: 35px 20px;
    }
    
    .options-grid {
        grid-template-columns: 1fr;
    }
    
    .action-bar {
        flex-direction: column;
    }
    
    .action-bar .btn {
        width: 100%;
    }
    
    .related-tools {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .result-details {
        flex-direction: column;
        gap: 15px;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .tip-item {
        flex-direction: column;
        text-align: center;
    }
    
    .tip-icon {
        margin: 0 auto;
    }
    
    .comparison-row {
        grid-template-columns: 1fr;
    }
    
    .comparison-cell {
        text-align: left !important;
    }
    
    .comparison-row.header {
        display: none;
    }
    
    .comparison-cell::before {
        font-weight: 600;
        display: block;
        margin-bottom: 5px;
    }
    
    .comparison-cell.ico::before {
        content: 'ICO (Windows): ';
    }
    
    .comparison-cell.icns::before {
        content: 'ICNS (macOS): ';
    }
}

@media (max-width: 480px) {
    .preset-buttons {
        flex-direction: column;
    }
    
    .preset-btn {
        width: 100%;
        justify-content: center;
    }
    
    .size-checkboxes {
        flex-direction: column;
    }
    
    .size-checkbox {
        width: 100%;
        justify-content: flex-start;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .btn:hover,
    .download-btn:hover,
    .related-link:hover {
        transform: none;
    }
    
    .faq-question svg,
    .progress {
        transition: none;
    }
}