/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --background: #f8fafc;
    --surface: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #7c3aed 100%);
    color: white;
    padding: 40px 0;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

header h1 i {
    margin-right: 15px;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Navigation Bar */
.tool-nav {
    background: var(--surface);
    padding: 20px 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.tool-nav .container {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    flex-wrap: wrap;
}

.nav-btn {
    background: transparent;
    border: 2px solid var(--border-color);
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.3s ease;
    white-space: nowrap;
    font-family: inherit;
}

.nav-btn i {
    margin-right: 8px;
}

.nav-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

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

/* Main Content Area */
main {
    padding: 40px 20px;
    min-height: calc(100vh - 400px);
}

main.editor-active {
    padding: 0;
    max-width: none;
}

main.editor-active .container {
    max-width: none;
    padding: 0;
}

.tool-section {
    display: none;
    background: var(--surface);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.3s ease;
}

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

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

/* Tool Header */
.tool-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.tool-header h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.tool-header h2 i {
    margin-right: 12px;
}

.tool-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.tool-content {
    margin-top: 20px;
}

/* Form Elements */
.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.input-group input[type="text"],
.input-group textarea,
.input-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
    background: white;
}

.input-group textarea {
    resize: vertical;
    font-family: 'Monaco', 'Courier New', monospace;
    min-height: 100px;
}

.input-group input:focus,
.input-group textarea:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Buttons */
button {
    font-family: inherit;
}

.primary-btn,
.secondary-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 10px 10px 10px 0;
}

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

.primary-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.secondary-btn {
    background: var(--secondary-color);
    color: white;
}

.secondary-btn:hover {
    background: #475569;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0;
}

/* QR Code Display */
.qr-display {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 20px 0;
    padding: 20px;
    background: var(--background);
    border-radius: 8px;
    min-height: 50px;
}

.qr-display canvas {
    border: 4px solid var(--primary-color);
    border-radius: 8px;
}

.qr-display img {
    border: 4px solid var(--primary-color);
    border-radius: 8px;
}

/* Upload Area */
.upload-area {
    text-align: center;
    padding: 20px;
}

/* Paste Area */
.paste-area {
    margin: 20px auto;
    padding: 40px 20px;
    border: 3px dashed var(--border-color);
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--background);
    max-width: 600px;
}

.paste-area:hover {
    border-color: var(--primary-color);
    background: #f0f4ff;
}

.paste-area:focus {
    outline: none;
    border-color: var(--primary-color);
    background: #f0f4ff;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.paste-area.active {
    border-color: var(--primary-color);
    background: #f0f4ff;
}

.paste-area i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    display: block;
}

.paste-area p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin: 0;
}

.paste-area strong {
    color: var(--primary-color);
    font-weight: 600;
}

#qr-preview {
    margin: 20px 0;
    text-align: center;
}

#qr-preview img {
    max-width: 400px;
    width: 100%;
    border: 2px solid var(--border-color);
    border-radius: 8px;
}

/* Result Box */
.result-box {
    background: var(--background);
    border: 2px solid var(--success-color);
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
    display: none;
}

.result-box.show {
    display: block;
}

.result-box h3 {
    color: var(--success-color);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.result-box p {
    margin: 8px 0;
    font-size: 1rem;
    line-height: 1.6;
}

.result-box .result-value {
    font-weight: 600;
    color: var(--primary-color);
    word-break: break-all;
}

/* Timestamp Converter Grid */
.converter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

/* World Clock Grid */
.clock-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    padding: 20px 0;
}

.clock-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, #7c3aed 100%);
    color: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    transition: transform 0.3s ease;
}

.clock-card:hover {
    transform: translateY(-5px);
}

.clock-card .city-name {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.clock-card .time {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 15px 0;
    font-family: 'Monaco', 'Courier New', monospace;
}

.clock-card .date {
    font-size: 1rem;
    opacity: 0.9;
}

.clock-card .timezone {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 8px;
}

/* Code Formatter */
.formatter-controls {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    align-items: center;
}

.formatter-controls label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 1rem;
}

.formatter-controls input[type="radio"] {
    cursor: pointer;
    width: 18px;
    height: 18px;
}

.formatter-controls select {
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
}

#code-output {
    background: #f1f5f9;
    font-family: 'Monaco', 'Courier New', monospace;
}

/* Monaco Code Editor - Full Screen */
#code-editor {
    padding: 0;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
}

.editor-fullscreen {
    height: calc(100vh - 200px);
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.editor-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: var(--surface);
    border-bottom: 2px solid var(--border-color);
    flex-wrap: wrap;
    gap: 15px;
}

.toolbar-left h2 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin: 0;
}

.toolbar-left h2 i {
    margin-right: 10px;
}

.toolbar-controls {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    align-items: center;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-group label {
    font-weight: 500;
    color: var(--text-primary);
    margin: 0;
    white-space: nowrap;
}

.control-group select {
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
    cursor: pointer;
    background: white;
}

.control-group .primary-btn,
.control-group .secondary-btn {
    margin: 0;
    padding: 8px 16px;
    font-size: 0.95rem;
}

.editor-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    flex: 1;
    overflow: hidden;
}

.editor-layout.editor-maximized {
    grid-template-columns: 1fr 50px;
}

.editor-layout.preview-maximized {
    grid-template-columns: 50px 1fr;
}

.editor-panel,
.preview-panel {
    display: flex;
    flex-direction: column;
    border: none;
    border-radius: 0;
    overflow: hidden;
    background: white;
    position: relative;
}

.editor-panel {
    border-right: 2px solid var(--border-color);
}

.editor-panel.minimized,
.preview-panel.minimized {
    overflow: hidden;
}

.editor-panel.minimized #monaco-editor,
.preview-panel.minimized #preview-content {
    display: none;
}

.editor-panel.minimized .panel-header,
.preview-panel.minimized .panel-header {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    padding: 15px 10px;
    height: 100%;
}

.panel-header {
    background: var(--primary-color);
    color: white;
    padding: 12px 15px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.panel-title {
    display: flex;
    align-items: center;
    gap: 8px;
}

.panel-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.panel-action-btn,
.panel-toggle-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: 6px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background 0.3s ease;
}

.panel-action-btn:hover,
.panel-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.panel-toggle-btn i {
    transition: transform 0.3s ease;
}

.minimized .panel-toggle-btn i {
    transform: rotate(180deg);
}

#monaco-editor {
    flex: 1;
    width: 100%;
    overflow: hidden;
}

#preview-content {
    flex: 1;
    overflow: auto;
    padding: 20px;
    background: white;
}

/* Remove old editor controls styles */
.editor-controls {
    display: none;
}

/* Markdown Preview Styles */
#preview-content.markdown-preview {
    font-family: 'Inter', -apple-system, sans-serif;
    line-height: 1.8;
    color: var(--text-primary);
}

#preview-content.markdown-preview h1,
#preview-content.markdown-preview h2,
#preview-content.markdown-preview h3,
#preview-content.markdown-preview h4,
#preview-content.markdown-preview h5,
#preview-content.markdown-preview h6 {
    margin-top: 24px;
    margin-bottom: 16px;
    font-weight: 600;
    line-height: 1.25;
}

#preview-content.markdown-preview h1 {
    font-size: 2em;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

#preview-content.markdown-preview h2 {
    font-size: 1.5em;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

#preview-content.markdown-preview code {
    background: #f6f8fa;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.9em;
}

#preview-content.markdown-preview pre {
    background: #f6f8fa;
    padding: 16px;
    border-radius: 6px;
    overflow-x: auto;
}

#preview-content.markdown-preview pre code {
    background: none;
    padding: 0;
}

#preview-content.markdown-preview blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 16px;
    color: var(--text-secondary);
    margin: 16px 0;
}

#preview-content.markdown-preview table {
    border-collapse: collapse;
    width: 100%;
    margin: 16px 0;
}

#preview-content.markdown-preview table th,
#preview-content.markdown-preview table td {
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    text-align: left;
}

#preview-content.markdown-preview table th {
    background: var(--background);
    font-weight: 600;
}

#preview-content.markdown-preview img {
    max-width: 100%;
    height: auto;
}

#preview-content.markdown-preview a {
    color: var(--primary-color);
    text-decoration: none;
}

#preview-content.markdown-preview a:hover {
    text-decoration: underline;
}

/* HTML Preview */
#preview-content.html-preview {
    padding: 0;
}

#preview-content.html-preview iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Console Output */
#preview-content.console-output {
    background: #1e1e1e;
    color: #d4d4d4;
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    padding: 15px;
}

.console-line {
    margin: 4px 0;
    padding: 4px 8px;
    border-radius: 3px;
}

.console-line.log {
    color: #d4d4d4;
}

.console-line.error {
    color: #f48771;
    background: rgba(244, 135, 113, 0.1);
}

.console-line.warn {
    color: #dcdcaa;
    background: rgba(220, 220, 170, 0.1);
}

.console-line.info {
    color: #4fc1ff;
}

.console-line .console-time {
    color: #858585;
    margin-right: 8px;
}

/* Responsive Editor */
@media (max-width: 1024px) {
    .editor-layout {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 1fr;
    }
    
    .editor-layout.editor-maximized {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 50px;
    }
    
    .editor-layout.preview-maximized {
        grid-template-columns: 1fr;
        grid-template-rows: 50px 1fr;
    }
    
    .editor-panel {
        border-right: none;
        border-bottom: 2px solid var(--border-color);
    }
    
    .editor-panel.minimized .panel-header,
    .preview-panel.minimized .panel-header {
        writing-mode: horizontal-tb;
        text-orientation: mixed;
        padding: 12px 15px;
        height: auto;
    }
}

@media (max-width: 768px) {
    .editor-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .toolbar-left {
        text-align: center;
    }
    
    .toolbar-controls {
        flex-direction: column;
        width: 100%;
    }
    
    .control-group {
        width: 100%;
        justify-content: space-between;
    }
    
    .editor-fullscreen {
        height: calc(100vh - 250px);
    }
}


/* Footer */
footer {
    background: var(--text-primary);
    color: white;
    text-align: center;
    padding: 30px 0;
    margin-top: 60px;
}

footer p {
    margin: 0;
}

/* Error and Success Messages */
.error-message {
    background: #fee2e2;
    border: 2px solid var(--danger-color);
    color: var(--danger-color);
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.success-message {
    background: #d1fae5;
    border: 2px solid var(--success-color);
    color: var(--success-color);
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    header p {
        font-size: 1rem;
    }

    .tool-header h2 {
        font-size: 1.5rem;
    }

    .tool-nav .container {
        flex-direction: column;
    }

    .nav-btn {
        width: 100%;
        text-align: center;
    }

    .clock-card .time {
        font-size: 2rem;
    }

    #qr-preview img {
        max-width: 100%;
    }

    .converter-grid {
        grid-template-columns: 1fr;
    }

    .tool-section {
        padding: 20px;
    }

    main {
        padding: 20px 10px;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5rem;
    }

    .clock-card .time {
        font-size: 1.8rem;
    }

    .clock-card .city-name {
        font-size: 1.1rem;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}