/* ===================================
   Tools Page Styles
   =================================== */

.tools-section {
    padding: calc(80px + 1rem) var(--spacing-md) 1rem;
    background: var(--bg-primary);
    min-height: calc(100vh - 80px);
}

/* Tools Index Page */
.tools-index {
    padding: calc(80px + 2rem) var(--spacing-md) var(--spacing-xl);
    background: var(--bg-primary);
    min-height: calc(100vh - 80px);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.tool-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 2rem;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition-base);
}

.tool-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.tool-card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tool-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.tool-card p {
    font-size: 0.9375rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* Tool Navigation */
.tool-nav {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    background: transparent;
    padding: 0;
    border-bottom: 1px solid var(--border-color);
}

.tool-nav-btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-base);
    font-family: var(--font-family);
    margin-bottom: -1px;
}

.tool-nav-btn:hover {
    color: var(--text-primary);
}

.tool-nav-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Tool Container */
.tool-container {
    display: none;
    background: transparent;
    padding: 0;
    height: calc(100vh - 140px);
}

.tool-container.active {
    display: block;
}

.tool-content {
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* Markdown Editor */
.markdown-editor-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    height: 100%;
}

.editor-panel,
.preview-panel {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: white;
    height: 100%;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 1rem;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.panel-title {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.panel-actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-base);
}

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

.action-btn svg {
    width: 16px;
    height: 16px;
}

/* Line Numbers Wrapper */
.line-numbers-wrapper {
    position: relative;
    flex: 1;
    display: flex;
    overflow: hidden;
}

.line-numbers {
    padding: 1rem 0.5rem 1rem 0.75rem;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text-light);
    text-align: right;
    user-select: none;
    white-space: pre;
    min-width: 3.5rem;
    flex-shrink: 0;
    overflow-y: auto;
    overflow-x: visible;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE and Edge */
    box-sizing: border-box;
    min-height: 100%;
}

.line-numbers::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}

.markdown-input {
    flex: 1;
    width: 100%;
    padding: 1rem;
    border: none;
    outline: none;
    resize: none;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text-primary);
    background: white;
    overflow-y: auto;
    overflow-x: auto;
}

.markdown-preview {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    background: white;
    color: var(--text-primary);
    line-height: 1.8;
    font-size: 0.9375rem;
}

.markdown-preview h1 {
    font-size: 2rem;
    font-weight: 800;
    margin: 1.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.markdown-preview h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 1.25rem 0 0.75rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid var(--border-color);
}

.markdown-preview h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 1rem 0 0.5rem;
}

.markdown-preview h4,
.markdown-preview h5,
.markdown-preview h6 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0.75rem 0 0.5rem;
}

.markdown-preview p {
    margin: 1rem 0;
}

.markdown-preview ul,
.markdown-preview ol {
    margin: 1rem 0;
    padding-left: 2rem;
}

.markdown-preview li {
    margin: 0.5rem 0;
}

.markdown-preview code {
    background: var(--bg-secondary);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace;
    font-size: 0.875em;
    color: var(--primary-color);
}

.markdown-preview pre {
    background: var(--bg-dark);
    color: #e2e8f0;
    padding: 1rem;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin: 1rem 0;
}

.markdown-preview pre code {
    background: transparent;
    padding: 0;
    color: inherit;
}

.markdown-preview blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 1rem;
    margin: 1rem 0;
    color: var(--text-light);
    font-style: italic;
}

.markdown-preview a {
    color: var(--primary-color);
    text-decoration: underline;
}

.markdown-preview a:hover {
    color: var(--primary-dark);
}

.markdown-preview table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.markdown-preview th,
.markdown-preview td {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    text-align: left;
}

.markdown-preview th {
    background: var(--bg-secondary);
    font-weight: 600;
}

.markdown-preview img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    margin: 1rem 0;
}

.markdown-preview hr {
    border: none;
    border-top: 2px solid var(--border-color);
    margin: 2rem 0;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--text-primary);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    z-index: 2000;
    animation: slideIn 0.3s ease-out;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    max-width: 400px;
}

.toast.success {
    background: #10b981;
}

.toast.error {
    background: #ef4444;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Image Format Validator & EXIF Viewer */
.image-format-container,
.exif-viewer-container,
.base64-image-container,
.color-converter-container,
.regex-container,
.json-validator-container,
.base64-container,
.uuid-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    height: 100%;
}

.upload-panel,
.info-panel {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: white;
    height: 100%;
}

.upload-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-sm);
    margin: 1rem;
    cursor: pointer;
    transition: var(--transition-base);
    background: var(--bg-primary);
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: var(--bg-secondary);
}

.upload-content {
    text-align: center;
}

.image-preview {
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    margin: 1rem;
    border-radius: var(--radius-sm);
}

.format-info {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    background: white;
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.format-details {
    padding: 0.5rem 0;
}

.info-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.5rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--bg-secondary);
}

.info-label {
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 150px;
    flex-shrink: 0;
}

.info-value {
    color: var(--text-primary);
    word-break: break-word;
    flex: 1;
}

.format-status {
    margin-bottom: 1rem;
}

.json-error {
    padding: 0.75rem 1rem;
    background: #ef444415;
    color: #ef4444;
    font-size: 0.875rem;
    border-top: 1px solid var(--border-color);
}

.json-output {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    background: var(--bg-dark);
    color: #e2e8f0;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Responsive Design */
@media (max-width: 968px) {
    .markdown-editor-container,
    .image-format-container,
    .exif-viewer-container,
    .base64-image-container,
    .color-converter-container,
    .regex-container,
    .json-validator-container,
    .base64-container,
    .uuid-container {
        grid-template-columns: 1fr;
    }
    
    .tool-container {
        height: auto;
        min-height: calc(100vh - 140px);
    }
    
    .editor-panel,
    .preview-panel,
    .upload-panel,
    .info-panel {
        min-height: 400px;
    }
}

@media (max-width: 768px) {
    .tool-nav {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .tool-nav-btn {
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    .tool-container {
        height: auto;
        min-height: calc(100vh - 140px);
    }
    
    .markdown-editor-container,
    .image-format-container,
    .exif-viewer-container,
    .base64-image-container,
    .color-converter-container,
    .regex-container,
    .json-validator-container,
    .base64-container,
    .uuid-container {
        gap: 0.75rem;
    }
    
    .editor-panel,
    .preview-panel,
    .upload-panel,
    .info-panel {
        min-height: 300px;
    }
    
    .info-row {
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .info-label {
        min-width: auto;
    }
    
    .toast {
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
        max-width: none;
    }
}