:root {
    --bg-dark: #0d1117; /* FIX: Preserve dark navy */
    --bg-card: #161b22; /* FIX: Preserve dark navy */
    --bg-card-hover: #27354a;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --border: #334155;
    --input-bg: #0d1117;
    --code-bg: #1e1e1e; /* FIX 1: VS Code dark gray */
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px 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);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background-color: var(--bg-card);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 1rem;
}

.nav-btn {
    background: none;
    border: 1px solid transparent;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 0.5rem;
    transition: all 0.2s;
}

.nav-btn:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
    border-color: #30363d;
}

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

.global-stats-bar {
    background-color: #0f172a;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    padding: 0.75rem 2rem;
    font-size: 0.85rem;
    font-weight: 500;
}

.global-stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.global-stat-item span {
    color: var(--text-primary);
    font-weight: 700;
}

/* Layout */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

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

/* Cards */
.card {
    background-color: var(--bg-card);
    border-radius: 1rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.add-question-card {
    padding: 28px;
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.card-header h3 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.section-title {
    margin: 2rem 0 1rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: flex;
    gap: 1rem;
}

.half {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

input[type="text"],
select,
textarea {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

#q-difficulty {
    max-width: 160px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.875rem;
}

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

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

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

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

.btn-purple {
    background-color: #7c6dfa;
    color: white;
}

.btn-purple:hover {
    background-color: #6a5ae0;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

.w-100 {
    width: 100%;
}

.mt-3 {
    margin-top: 1rem;
}

/* Badges */
.badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-easy { background-color: rgba(16, 185, 129, 0.2); color: #34d399; }
.badge-medium { background-color: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.badge-hard { background-color: rgba(239, 68, 68, 0.2); color: #f87171; }

.badge-correct { background-color: rgba(16, 185, 129, 0.2); color: #34d399; }
.badge-incorrect { background-color: rgba(239, 68, 68, 0.2); color: #f87171; }
.badge-pending { background-color: rgba(148, 163, 184, 0.2); color: #cbd5e1; }

.badge-subject { background-color: rgba(59, 130, 246, 0.2); color: #60a5fa; }
.badge-language { background-color: rgba(139, 92, 246, 0.2); color: #a78bfa; }

/* Student Identity */
.student-identity {
    background: linear-gradient(to right, var(--bg-card), #1e293b);
    border-left: 4px solid var(--primary);
}

/* Code Editor & Blocks */
.editor-section, .submitted-section {
    margin-top: 1.5rem;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
}

.editor-header {
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: flex-end;
}

.lang-select {
    width: auto;
    padding: 0.5rem;
    background-color: var(--bg-dark);
}

.code-editor {
    font-family: 'Fira Code', monospace;
    font-size: 14px;
    background-color: var(--code-bg);
    color: #e2e8f0;
    resize: vertical;
    min-height: 200px;
    border: none;
    padding: 1rem;
    line-height: 1.5;
    tab-size: 4;
    flex-grow: 1;
    outline: none;
}

.code-editor:focus {
    box-shadow: none;
}

/* FIX 1: Editor wrapper & line numbers */
.editor-wrapper {
    display: flex;
    background-color: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    overflow: hidden;
    position: relative;
    margin-bottom: 1rem;
}

.editor-wrapper:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary);
}

.line-numbers {
    padding: 1rem 0.5rem;
    text-align: right;
    color: #6e7681;
    border-right: 1px solid #2d2d2d;
    font-family: 'Fira Code', monospace;
    font-size: 14px;
    line-height: 1.5;
    user-select: none;
    min-width: 2.5rem;
    background-color: #1e1e1e;
    overflow: hidden;
}

.code-block-wrapper {
    position: relative;
    background-color: var(--code-bg);
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    margin: 1rem 0;
}

.btn-copy {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background-color: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 0.25rem;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

pre {
    margin: 0;
    padding: 1rem;
    overflow-x: auto;
}

pre::-webkit-scrollbar {
    height: 8px;
}

pre::-webkit-scrollbar-thumb {
    background-color: var(--border);
    border-radius: 4px;
}

pre code {
    font-family: 'Fira Code', monospace;
    font-size: 14px;
    color: #e2e8f0;
}

/* Review Tab */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--bg-card);
    border-radius: 1rem;
    padding: 1.5rem;
    text-align: center;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-primary { color: var(--primary); }

.review-question-section {
    margin-bottom: 3rem;
}

.review-q-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

.submission-count {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.answer-review-card {
    border-left: 4px solid var(--border);
}

.answer-review-card.status-correct { border-left-color: var(--success); }
.answer-review-card.status-incorrect { border-left-color: var(--danger); }
.answer-review-card.status-pending { border-left-color: var(--warning); }

.student-info {
    display: flex;
    flex-direction: column;
}

.student-info .time {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.feedback-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.admin-note-input {
    min-height: 80px;
    margin-bottom: 1rem;
}

.action-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.mark-buttons {
    display: flex;
    gap: 0.5rem;
}

.admin-feedback {
    background-color: rgba(59, 130, 246, 0.1);
    border-left: 4px solid var(--primary);
    padding: 1rem;
    border-radius: 0 0.5rem 0.5rem 0;
    margin-top: 1rem;
}

.admin-feedback strong {
    color: var(--primary);
    display: block;
    margin-bottom: 0.5rem;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    background-color: var(--bg-card);
    border-radius: 1rem;
    border: 1px dashed var(--border);
}

.hint-container {
    margin-top: 1rem;
}

.hint-text {
    margin-top: 0.5rem;
    padding: 0.75rem;
    background-color: rgba(245, 158, 11, 0.1);
    border-radius: 0.5rem;
    color: #fbbf24;
    font-size: 0.875rem;
}

/* Toast Notifications */
#toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 9999;
}

.toast {
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    color: white;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease forwards;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.toast.fade-out {
    opacity: 0;
}

.toast-success { background-color: var(--success); }
.toast-error { background-color: var(--danger); }

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 3000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    padding: 2rem;
    border-radius: 1rem;
    width: 90%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}

.modal-content h3 {
    margin-bottom: 1rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.settings-section {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.settings-section h4 {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Nav Settings Icon */
.nav-settings {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.4rem 0.6rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s;
    margin-left: 0.5rem;
}

.nav-settings:hover {
    color: var(--text-primary);
    border-color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
}

/* Search and Filter */
.search-filter-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.search-input {
    flex: 2;
    min-width: 200px;
}

.topic-select {
    flex: 1;
    min-width: 150px;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    color: var(--text-primary);
    padding: 0.5rem;
    cursor: pointer;
}

.filter-btns {
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s;
}

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

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

/* Deadline & Flags */
.badge-overdue {
    background-color: rgba(239, 68, 68, 0.2);
    color: #f87171;
    border: 1px solid #ef4444;
}

.badge-deadline {
    background-color: rgba(148, 163, 184, 0.1);
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.flag-icon {
    color: #ef4444;
    font-size: 1.2rem;
    margin-left: 0.5rem;
}

.btn-help {
    background-color: rgba(239, 68, 68, 0.1);
    color: #f87171;
    border: 1px solid #ef4444;
    padding: 0.4rem 0.8rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.2s;
}

.btn-help:hover {
    background-color: #ef4444;
    color: white;
}

.btn-help.flagged {
    background-color: #ef4444;
    color: white;
}

/* Expected Output */
.expected-box {
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-top: 1rem;
}

.expected-box strong {
    color: var(--success);
    display: block;
    margin-bottom: 0.5rem;
}

/* Progress Tab */
.progress-header {
    text-align: center;
    margin-bottom: 2rem;
}

.xp-display {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    background: linear-gradient(135deg, #7c6dfa, #3b82f6);
    padding: 1.5rem 3rem;
    border-radius: 1rem;
    box-shadow: 0 10px 20px rgba(124, 109, 250, 0.3);
}

.xp-label {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    opacity: 0.9;
}

.xp-value {
    font-size: 3rem;
    font-weight: 800;
}

.subject-bars-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 1rem;
}

.subject-bar-item {
    width: 100%;
}

.subject-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.progress-track {
    width: 100%;
    height: 12px;
    background-color: var(--bg-dark);
    border-radius: 6px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(to right, var(--primary), #8b5cf6);
    transition: width 0.5s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-links {
        width: 100%;
        overflow-x: auto;
        padding-bottom: 0.5rem;
    }
    
    .global-stats-bar {
        overflow-x: auto;
        white-space: nowrap;
        justify-content: flex-start;
        padding: 0.75rem 1rem;
    }
    
    .badges {
        flex-wrap: wrap;
    }

}
/* Role Selector Overlay */
.role-selector-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-dark);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
}

.role-card-container {
    text-align: center;
    width: 90%;
    max-width: 800px;
}

.role-title {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.role-subtitle {
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.role-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.role-option-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 1.5rem;
    padding: 3rem 2rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.role-option-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
    background-color: var(--bg-card-hover);
}

.role-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    display: block;
}

.role-option-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.role-option-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

.role-option-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--primary), #8b5cf6);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.role-option-card:hover::after {
    transform: scaleX(1);
}

#switch-user-btn {
    border-color: var(--warning);
    color: var(--warning);
}

#switch-user-btn:hover {
    background-color: rgba(245, 158, 11, 0.1);
    border-color: var(--warning);
}


/* FIX 2: Delete popover */
.kebab-menu {
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-secondary);
    padding: 0 0.5rem;
    line-height: 1;
}
.kebab-menu:hover {
    color: var(--text-primary);
}
.delete-wrapper {
    position: relative;
    display: inline-block;
}
.delete-popover {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    background-color: var(--bg-card);
    border: 1px solid var(--danger);
    padding: 1rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-lg);
    z-index: 10;
    width: 250px;
}
.delete-popover p {
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}
.delete-popover .btn-group {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* FIX 3: Validation */
.char-counter {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
    text-align: right;
    display: block;
}
.char-counter.limit-near {
    color: var(--danger);
}
.error-shake {
    animation: shake 0.4s cubic-bezier(.36,.07,.19,.97) both;
    border-color: var(--danger) !important;
}
@keyframes shake {
  10%, 90% { transform: translate3d(-1px, 0, 0); }
  20%, 80% { transform: translate3d(2px, 0, 0); }
  30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
  40%, 60% { transform: translate3d(4px, 0, 0); }
}



/* FIX 7: Empty state */
.empty-illustration {
    width: 150px;
    margin: 0 auto 1rem;
    opacity: 0.8;
}

/* FIX 8: Keyboard hint */
.kbd-hint {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-left: 0.5rem;
}

/* Fix 4: Circular Progress Ring */
.progress-ring {
    width: 120px;
    height: 120px;
    margin: 0 auto;
}
.progress-ring-circle {
    transition: stroke-dashoffset 0.5s ease-out;
    transform: rotate(-90deg);
    transform-origin: 50% 50%;
}
.streak-box {
    text-align: center;
    background: rgba(245, 158, 11, 0.1);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--warning);
    margin-bottom: 1.5rem;
}
.streak-box span {
    display: block;
    font-size: 2rem;
    color: var(--warning);
    font-weight: 700;
}

/* Activity Calendar */
.activity-calendar-container {
    overflow-x: auto;
    padding-bottom: 0.5rem;
}

.calendar-wrapper {
    display: flex;
    gap: 8px;
    align-items: flex-end;
}

.calendar-labels {
    display: grid;
    grid-template-rows: repeat(7, 12px);
    gap: 4px;
    font-size: 10px;
    color: var(--text-secondary);
    line-height: 12px;
    text-align: right;
    margin-bottom: 4px; /* Align with grid bottom margin if any */
}

.calendar-grid {
    display: grid;
    grid-template-rows: repeat(7, 12px);
    grid-auto-flow: column;
    gap: 4px;
    width: max-content;
}

.calendar-day {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    transition: transform 0.1s;
}

.calendar-day:hover {
    transform: scale(1.2);
    z-index: 10;
}

.calendar-day.level-0 { background-color: #1e293b; }
.calendar-day.level-1 { background-color: #0e4429; }
.calendar-day.level-2 { background-color: #006d32; }
.calendar-day.level-3 { background-color: #26a641; }
.calendar-day.level-4 { background-color: #39d353; }

.calendar-legend {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 1rem;
    justify-content: flex-end;
}
.calendar-legend span {
    margin: 0 4px;
}

/* Folder Grouping for Questions */
.folder-group {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 1rem;
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.folder-header {
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    background-color: rgba(0,0,0,0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.25rem;
    font-weight: 600;
    transition: background-color 0.2s;
    user-select: none;
    border-bottom: 1px solid transparent;
}

.folder-header:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

details.folder-group[open] .folder-header {
    border-bottom: 1px solid var(--border);
    background-color: rgba(59, 130, 246, 0.1);
}

.folder-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.folder-content {
    padding: 1.5rem;
    padding-bottom: 0;
    background-color: var(--bg-dark);
}

/* Terminal Output Styling */
.terminal-output {
    background-color: #1e1e1e;
    border: 1px solid #333;
    border-radius: 0.5rem;
    overflow: hidden;
    font-family: 'Consolas', 'Monaco', monospace;
}

.terminal-header {
    background-color: #2d2d2d;
    padding: 0.5rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: #888;
    border-bottom: 1px solid #333;
}

.terminal-output pre {
    padding: 1rem;
    margin: 0;
    color: #d4d4d4;
    font-size: 0.9rem;
    white-space: pre-wrap;
    max-height: 200px;
    overflow-y: auto;
}

.btn-close-terminal {
    background: none;
    border: none;
    color: #888;
    cursor: pointer;
    font-size: 1.2rem;
    line-height: 1;
}

.btn-close-terminal:hover {
    color: #fff;
}