/* CODING PRACTICE SECTION */
.coding-practice-section {
    padding: 40px 60px;
    background: #f8fafc;
    min-height: calc(100vh - 200px);
}

.coding-practice-container {
    max-width: 1600px;
    margin: 0 auto;
}

.coding-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

/* Problem Panel */
.problem-panel {
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    border: 1px solid #e2e8f0;
    padding: 32px;
    overflow-y: auto;
    max-height: calc(100vh - 250px);
}

.problem-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid #e2e8f0;
}

.problem-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #0f172a;
    margin: 0;
}

.difficulty-badge {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.difficulty-badge.easy {
    background: #5dffbc;
    color: #0f5132;
}

.difficulty-badge.medium {
    background: #ffee5d;
    color: #856404;
}

.difficulty-badge.hard {
    background: #ff4482;
    color: white;
}

.problem-content h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: #0f172a;
    margin-top: 24px;
    margin-bottom: 12px;
}

.problem-content p {
    color: #1e293b;
    line-height: 1.7;
    margin-bottom: 16px;
}

.problem-content code {
    background: #f1f5f9;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    color: #6366f1;
}

.problem-content pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 16px 0;
}

.problem-content pre code {
    background: transparent;
    color: #e2e8f0;
    padding: 0;
}

.problem-content ul {
    margin: 16px 0;
    padding-left: 24px;
}

.problem-content li {
    color: #1e293b;
    margin-bottom: 8px;
    line-height: 1.6;
}

/* Editor Panel */
.editor-panel {
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    border: 1px solid #e2e8f0;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 250px);
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid #e2e8f0;
    background: #f8fafc;
    border-radius: 16px 16px 0 0;
}

.editor-header span {
    font-weight: 600;
    color: #1e293b;
}

.editor-actions {
    display: flex;
    gap: 8px;
}

.btn-run,
.btn-submit {
    padding: 8px 16px;
    border-radius: 6px;
    border: none;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.btn-run {
    background: white;
    color: #6366f1;
    border: 2px solid #6366f1;
}

.btn-run:hover {
    background: #f0f4ff;
}

.btn-submit {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
}

.btn-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

/* CodeMirror Editor - Custom Theme */
.CodeMirror {
    height: 400px;
    font-size: 14px;
    border-radius: 0;
    border: none;
    background: #ffffff !important;
    color: #000000 !important;
}

.CodeMirror-scroll {
    min-height: 400px;
}

/* Custom CodeMirror Theme to Match Website */
.CodeMirror-gutters {
    background: #f8fafc !important;
    border-right: 1px solid #e2e8f0 !important;
}

.CodeMirror-linenumber {
    color: #64748b !important;
}

.CodeMirror-cursor {
    border-left: 2px solid #6366f1 !important;
}

/* Syntax Highlighting - Custom Theme Matching Website */
.CodeMirror .cm-keyword { color: #6865f2 !important; font-weight: 600; }
.CodeMirror .cm-string { color: #000000 !important; }
.CodeMirror .cm-number { color: #64748b !important; }
.CodeMirror .cm-comment { color: #64748b !important; font-style: italic; }
.CodeMirror .cm-def { color: #6865f2 !important; }
.CodeMirror .cm-variable { color: #000000 !important; }
.CodeMirror .cm-variable-2 { color: #000000 !important; }
.CodeMirror .cm-operator { color: #6865f2 !important; }
.CodeMirror .cm-builtin { color: #6865f2 !important; }
.CodeMirror .cm-property { color: #6865f2 !important; }
.CodeMirror .cm-atom { color: #6865f2 !important; }
.CodeMirror .cm-tag { color: #6865f2 !important; }
.CodeMirror .cm-attribute { color: #000000 !important; }
.CodeMirror .cm-qualifier { color: #6865f2 !important; }
.CodeMirror .cm-header { color: #6865f2 !important; }
.CodeMirror .cm-link { color: #6865f2 !important; }
.CodeMirror .cm-error { color: #ff4482 !important; background: #fff5f7 !important; }

/* Output Panel */
.output-panel {
    border-top: 1px solid #e2e8f0;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 200px;
}

.output-header {
    padding: 12px 20px;
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
    font-weight: 600;
    color: #1e293b;
    font-size: 0.875rem;
}

.output-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    color: #1e293b;
    background: #f8fafc;
}

.output-content .success {
    color: #0f5132;
    font-weight: 600;
}

.output-content .error {
    color: #ff4482;
    font-weight: 600;
}

.output-content .test-case {
    margin: 12px 0;
    padding: 12px;
    background: white;
    border-radius: 8px;
    border-left: 3px solid #e2e8f0;
}

.output-content .test-case.passed {
    border-left-color: #5dffbc;
}

.output-content .test-case.failed {
    border-left-color: #ff4482;
}

/* Problems Sidebar */
.problems-sidebar {
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    border: 1px solid #e2e8f0;
    padding: 24px;
    max-height: calc(100vh - 250px);
    overflow-y: auto;
}

.problems-sidebar h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 16px;
}

.problems-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.problem-item {
    padding: 12px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.problem-item:hover {
    background: #f8fafc;
    border-color: #e2e8f0;
}

.problem-item.active {
    background: #f0f4ff;
    border-color: #6366f1;
}

.problem-item-title {
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 4px;
    font-size: 0.9rem;
}

.problem-item-difficulty {
    font-size: 0.75rem;
    color: #64748b;
}

/* Responsive */
@media (max-width: 1200px) {
    .coding-layout {
        grid-template-columns: 1fr;
    }
    
    .problems-sidebar {
        max-height: 300px;
    }
}

@media (max-width: 768px) {
    .coding-practice-section {
        padding: 40px 24px;
    }
    
    .problem-panel,
    .editor-panel {
        max-height: none;
    }
    
    .CodeMirror {
        height: 300px;
    }
}