/* Playground Header */
.playground-header {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.playground-header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.playground-header p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Playground Main */
.playground-main {
    padding: 60px 0;
    background: #f8fafc;
    min-height: calc(100vh - 200px);
}

.playground-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* Panel Styles */
.editor-panel,
.output-panel,
.memory-panel,
.status-panel {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: all 0.3s ease;
}

.editor-panel:hover,
.output-panel:hover,
.memory-panel:hover,
.status-panel:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.panel-header {
    background: #f8fafc;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0;
}

/* Editor Panel */
.editor-panel {
    grid-column: 1 / 2;
    grid-row: 1 / 2;
}

.editor-controls {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.btn-icon {
    margin-right: 0.5rem;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.9rem;
}

.editor-container {
    padding: 1.5rem;
}

#codeEditor {
    width: 100%;
    height: 300px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 1rem;
    font-family: 'JetBrains Mono', 'SF Mono', Monaco, monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    resize: vertical;
    background: #f8fafc;
    color: #1e293b;
    transition: border-color 0.3s ease;
}

#codeEditor:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.editor-info {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: #64748b;
}

/* Output Panel */
.output-panel {
    grid-column: 2 / 3;
    grid-row: 1 / 2;
}

.output-container {
    padding: 1.5rem;
    height: 300px;
}

.output-content {
    height: 100%;
    background: #1e293b;
    border-radius: 8px;
    padding: 1rem;
    font-family: 'JetBrains Mono', 'SF Mono', Monaco, monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    color: #e2e8f0;
    overflow-y: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.output-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: #64748b;
    text-align: center;
}

.output-placeholder span {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.output-placeholder p {
    margin: 0;
    font-size: 0.9rem;
}

/* Memory Panel */
.memory-panel {
    grid-column: 1 / 2;
    grid-row: 2 / 3;
}

.memory-info {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: #64748b;
}

.memory-container {
    padding: 1.5rem;
}

.memory-visualizer {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 1rem;
    background: #f8fafc;
    border-radius: 8px;
    min-height: 120px;
    align-items: center;
    justify-content: center;
}

.memory-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 2px solid #e2e8f0;
    border-radius: 6px;
    font-family: 'JetBrains Mono', 'SF Mono', Monaco, monospace;
    font-size: 0.8rem;
    font-weight: 600;
    transition: all 0.2s ease;
    background: white;
    color: #64748b;
}

.memory-cell.current {
    border-color: #6366f1;
    background-color: #f3e8ff;
    color: #6366f1;
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.memory-cell.non-zero {
    background-color: #e3f2fd;
    color: #1976d2;
    border-color: #bbdefb;
}

.memory-cell.zero {
    background-color: #f5f5f5;
    color: #9e9e9e;
    border-color: #e0e0e0;
}

/* Status Panel */
.status-panel {
    grid-column: 2 / 3;
    grid-row: 2 / 3;
}

.status-container {
    padding: 1.5rem;
}

.status-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: #64748b;
}

.status-icon {
    font-size: 1.2rem;
}

.execution-time {
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: #94a3b8;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 12px;
    max-width: 800px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    color: #1e293b;
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: #64748b;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: #f1f5f9;
    color: #1e293b;
}

.modal-body {
    padding: 1.5rem;
    max-height: 60vh;
    overflow-y: auto;
}

/* Examples Grid */
.examples-grid {
    display: grid;
    gap: 1rem;
}

.example-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.example-card:hover {
    border-color: #6366f1;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
}

.example-card h3 {
    color: #1e293b;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.example-card p {
    color: #64748b;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.example-card pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 1rem;
    border-radius: 6px;
    font-family: 'JetBrains Mono', 'SF Mono', Monaco, monospace;
    font-size: 0.8rem;
    overflow-x: auto;
    margin: 1rem 0;
}

.example-card button {
    background: #6366f1;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.example-card button:hover {
    background: #4f46e5;
    transform: translateY(-1px);
}

/* Help Section */
.help-section {
    padding: 80px 0;
    background: white;
}

.help-section h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #1e293b;
}

.commands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.command-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    text-align: center;
}

.command-card:hover {
    border-color: #6366f1;
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
}

.command-card h3 {
    color: #6366f1;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.command-card p {
    color: #64748b;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.command-card code {
    background: #1e293b;
    color: #e2e8f0;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-family: 'JetBrains Mono', 'SF Mono', Monaco, monospace;
    font-size: 0.9rem;
    display: inline-block;
}

/* Status Colors */
.status-success {
    color: #10b981 !important;
}

.status-error {
    color: #ef4444 !important;
}

.status-info {
    color: #3b82f6 !important;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .playground-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto auto;
    }
    
    .editor-panel {
        grid-column: 1 / 2;
        grid-row: 1 / 2;
    }
    
    .output-panel {
        grid-column: 1 / 2;
        grid-row: 2 / 3;
    }
    
    .memory-panel {
        grid-column: 1 / 2;
        grid-row: 3 / 4;
    }
    
    .status-panel {
        grid-column: 1 / 2;
        grid-row: 4 / 5;
    }
}

@media (max-width: 768px) {
    .playground-header h1 {
        font-size: 2rem;
    }
    
    .playground-header p {
        font-size: 1rem;
    }
    
    .editor-controls {
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .btn {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
    
    .memory-cell {
        width: 35px;
        height: 35px;
        font-size: 0.7rem;
    }
    
    .commands-grid {
        grid-template-columns: 1fr;
    }
    
    .help-section h2 {
        font-size: 2rem;
    }
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Custom Scrollbar */
.output-content::-webkit-scrollbar,
.modal-body::-webkit-scrollbar {
    width: 8px;
}

.output-content::-webkit-scrollbar-track,
.modal-body::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.output-content::-webkit-scrollbar-thumb,
.modal-body::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

.output-content::-webkit-scrollbar-thumb:hover,
.modal-body::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}