/* Base Styles */
:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --danger-color: #e74c3c;
    --success-color: #27ae60;
    --border-radius: 4px;
    --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
    padding: 0;
    margin: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Header Styles */
header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e1e4e8;
}

header h1 {
    color: var(--dark-color);
    margin-bottom: 0.5rem;
    font-size: 2.5rem;
}

header p.byline {
    color: var(--primary-color);
    font-weight: 500;
    font-size: 1.2rem;
    margin: 0.5rem 0 1rem 0;
    font-style: italic;
}

header p.byline a {
    color: var(--primary-color);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

header p.byline a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

header p {
    color: #7f8c8d;
    font-size: 1.1rem;
}

/* Tab Navigation */
.tab-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid #e1e4e8;
    padding-bottom: 0.5rem;
}

.tab-btn {
    padding: 0.6rem 1.2rem;
    background: none;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
    color: #555;
}

.tab-btn:hover {
    background-color: #f0f0f0;
}

.tab-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Tab Content */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

.tab-content h2 {
    color: var(--dark-color);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    text-align: center;
}

/* Tool Container */
.tool-container {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    margin-bottom: 2rem;
}

.input-group, .output-group {
    position: relative;
}

.code-input, .code-output {
    width: 100%;
    min-height: 200px;
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    resize: vertical;
    background-color: #f8f9fa;
}

.code-output {
    background-color: #f8f9fa;
    min-height: 150px;
    border-top: none;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}

.button-group {
    display: flex;
    gap: 0.5rem;
    padding: 0.75rem;
    background-color: #f8f9fa;
    border-bottom: 1px solid #eee;
}

button {
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

button:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
}

#sql-minify, #css-minify, #html-minify, #json-minify, #xml-minify, #yaml-minify,
#base64-encode, #base64-decode {
    background-color: var(--secondary-color);
}

#sql-clear, #css-clear, #html-clear, #json-clear, #xml-clear, #yaml-clear,
#base64-clear {
    background-color: var(--danger-color);
}

#sql-copy, #css-copy, #html-copy, #json-copy, #xml-copy, #yaml-copy,
#base64-copy {
    background-color: var(--dark-color);
    width: 100%;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

/* Footer */
footer {
    text-align: center;
    padding: 1.5rem;
    margin-top: 2rem;
    color: #7f8c8d;
    font-size: 0.9rem;
    border-top: 1px solid #e1e4e8;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem 0.5rem;
    }
    
    .tab-buttons {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 0.5rem;
        -webkit-overflow-scrolling: touch;
    }
    
    .tab-btn {
        white-space: nowrap;
        padding: 0.5rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .code-input, .code-output {
        min-height: 150px;
    }
}

/* CodeMirror Overrides */
.CodeMirror {
    height: auto;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: 'Fira Code', 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.5;
}

.CodeMirror-scroll {
    min-height: 200px;
}

/* Utility Classes */
.hidden {
    display: none;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--success-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* Loading Spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
    margin-right: 8px;
    vertical-align: middle;
}

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