body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #333;
    height: 100vh;
    max-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
    color: #333;
    overflow: hidden; /* Prevent body scrolling */
}
.header {
    background-color: #333;
    color: white;
    padding: 0.5rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #444;
    flex-shrink: 0; /* Prevent header from shrinking */
}
.header-title-section {
    display: flex;
    align-items: center;
    gap: 15px; /* Space between title and timer */
}
.header-title {
    font-size: 1.25rem;
    font-weight: bold;
    margin: 0;
}
.header-controls {
    display: flex;
    align-items: center;
}
.timer {
    padding: 0.25rem 0.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 0.25rem;
    color: #fff;
    font-weight: 500;
    transition: background-color 0.3s, color 0.3s;
}
.btn-custom {
    background-color: #444;
    color: white;
    border: none;
    padding: 0.35rem 0.75rem;
    margin-left: 0.5rem;
    border-radius: 0.25rem;
}
.main-container {
    display: flex;
    flex: 1;
    height: calc(100vh - 49px); /* Subtract header height */
    max-height: calc(100vh - 49px);
    position: relative;
    overflow: hidden; /* Prevent scrollbars during resize */
}
.question-panel {
    width: 30%;
    min-width: 200px;
    max-width: 70%; /* Prevent panel from taking too much space */
    background-color: white;
    overflow-y: auto;
    padding: 0;
    display: flex;
    flex-direction: column;
    transition: width 0.05s ease; /* Smoother transitions when not dragging */
    will-change: width; /* Optimize for animations */
}
.vnc-panel {
    flex: 1;
    background-color: #f5f5f5;
    display: flex;
    flex-direction: column;
    min-width: 300px; /* Ensure VNC panel has enough space */
    overflow: hidden; /* Prevent overflow issues */
    max-height: 100%;
}
.question-nav {
    display: flex;
    padding: 0.5rem;
    background-color: #f5f5f5;
    border-bottom: 1px solid #ddd;
}
.nav-arrow {
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
}
.nav-arrow-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: #e9ecef;
}
.question-select {
    flex: 1;
    margin: 0 0.5rem;
}
.question-content {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
    transition: opacity 0.2s ease; /* Add smooth transition */
    max-height: calc(100vh - 95px); /* Header + Question Nav */
}
.info-box {
    background-color: #e3f2fd;
    border-radius: 0.25rem;
    padding: 1rem;
    margin: 1rem 0;
    display: flex;
    align-items: flex-start;
}
.info-icon {
    color: #0d6efd;
    font-size: 1.25rem;
    margin-right: 0.75rem;
}
.highlight {
    color: #d63384;
    font-weight: 500;
}
.code {
    font-family: monospace;
    background-color: #f8f9fa;
    padding: 0.2rem 0.5rem;
    border-radius: 0.25rem;
}
.terminal-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    max-height: 100%;
    overflow: hidden;
}
.terminal-iframe {
    flex: 1;
    border: none;
    width: 100%;
    height: 100%;
    background-color: #000;
    max-height: 100%;
}
.terminal-controls {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 100;
    display: flex;
    gap: 5px;
    opacity: 0.5;
    transition: opacity 0.3s ease;
}
.terminal-controls:hover {
    opacity: 1;
}
.terminal-controls .btn {
    backdrop-filter: blur(4px);
    background-color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
}
.loader {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    justify-content: center;
    align-items: center;
}
.spinner-border {
    width: 3rem;
    height: 3rem;
}
ul.requirements {
    padding-left: 1.5rem;
}
ul.requirements li {
    margin-bottom: 0.5rem;
}
.connection-status {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 5px 10px;
    border-radius: 4px;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    font-size: 12px;
    z-index: 100;
    opacity: 0;
    transition: opacity 0.5s;
}
.connection-status.show {
    opacity: 1;
}
.panel-divider {
    width: 8px;
    height: 100%;
    background-color: #ddd;
    cursor: col-resize;
    position: relative;
    transition: background-color 0.2s ease;
    z-index: 10;
    flex-shrink: 0;
}
.panel-divider:hover, .panel-divider.dragging {
    background-color: #1e88e5;
}
.panel-divider::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 4px;
    height: 30px;
    background-color: #999;
    border-radius: 2px;
}
.panel-divider:hover::after, .panel-divider.dragging::after {
    background-color: #fff;
}
/* Divider hint and tooltip */
.divider-hint {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none; /* Allow events to pass through */
    z-index: 11;
    width: 100px;
}
.panel-divider:hover .divider-hint {
    opacity: 1;
}
.divider-arrows {
    font-size: 16px;
    color: white;
    margin-bottom: 5px;
}
.divider-tooltip {
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    position: absolute;
    top: 25px;
}
/* Prevent text selection during dragging */
.no-select {
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}
/* Add a class for content transitions */
.content-fade {
    opacity: 0.6;
}
/* Question transition indicators */
.question-transition {
    position: relative;
}
.question-transition::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: #1e88e5;
    animation: pulseIndicator 1s ease-in-out;
}
@keyframes pulseIndicator {
    0% { opacity: 0; }
    50% { opacity: 1; }
    100% { opacity: 0; }
}
/* Inline code highlighting for text in single quotes */
.inline-code {
    background-color: rgba(0, 0, 0, 0.06);
    border-radius: 3px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85em;
    padding: 2px 4px;
    color: #d63384;
    cursor: pointer;
    transition: background-color 0.2s;
}

.inline-code:hover {
    background-color: rgba(0, 0, 0, 0.12);
}

/* Improved spacing for question content */
.question-body {
    padding: 10px 0;
    max-height: calc(100vh - 200px);
    overflow-y: auto;
}

.question-body p {
    margin-bottom: 16px;
    line-height: 1.6;
}

.question-body ul, 
.question-body ol {
    margin-bottom: 16px;
    line-height: 1.5;
    padding-left: 25px;
}

.question-body li {
    margin-bottom: 8px;
}

.question-body .info-box {
    background-color: #f5f9ff;
    border-left: 4px solid #3498db;
    padding: 12px 15px;
    margin: 20px 0;
    border-radius: 4px;
}

.question-body .requirements {
    margin: 16px 0;
}

.ssh-terminal-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    background-color: #1E1E1E;
    padding: 5px;
    border-radius: 6px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    max-height: 100%;
    width: 100%; /* Ensure full width */
    max-width: 100%; /* Prevent overflow */
    box-sizing: border-box; /* Include padding in width calculation */
    overflow: hidden;
}

/* Remove Terminal window bar */
.ssh-terminal-container::before {
    display: none;
}

/* Remove Window title */
.ssh-terminal-container::after {
    display: none;
}

/* Remove Terminal window controls (macOS style) */
.ssh-terminal-container .terminal-controls::before {
    display: none;
}

.terminal {
    flex: 1;
    width: 100%;
    height: 100%;
    background-color: #1E1E1E;
    color: #F8F8F8;
    font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Menlo, Monaco, 'Courier New', monospace;
    padding: 10px;
    overflow: auto;
    border-radius: 6px;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
    max-height: 100%;
    max-width: 100%; /* Prevent overflow */
    box-sizing: border-box; /* Include padding in width calculation */
}

/* Hide scrollbar but keep functionality */
.terminal::-webkit-scrollbar {
    width: 0;
    height: 0;
    display: none;
}

.terminal {
    -ms-overflow-style: none;  /* IE and Edge */
    scrollbar-width: none;  /* Firefox */
}

/* Add to existing terminal-container styles */
.terminal-container, .ssh-terminal-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    max-height: 100%;
    overflow: hidden;
}

/* Make question action buttons stick to bottom */
.action-buttons-container {
    position: sticky;
    bottom: 0;
    background-color: white;
    padding: 10px 0;
    border-top: 1px solid #ddd;
    z-index: 10;
}

.timer-warning {
    background-color: rgba(220, 53, 69, 0.25);
    color: #ffc107;
    animation: pulseTimer 1.5s infinite alternate;
}

@keyframes pulseTimer {
    from { background-color: rgba(220, 53, 69, 0.25); }
    to { background-color: rgba(220, 53, 69, 0.5); }
}

/* Toast container customization */
.toast-container {
    z-index: 9999;
}

/* Toast customization */
.toast {
    min-width: 250px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border: none;
    opacity: 1 !important; /* Make sure toasts are fully visible */
}

.toast-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.toast.bg-warning {
    border-left: 4px solid #ffc107;
}

.toast.bg-danger {
    border-left: 4px solid #dc3545;
}

.review-mode-badge {
    background-color: #6c757d;
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.85rem;
    font-weight: bold;
    margin-left: 10px;
    display: inline-block;
    vertical-align: middle;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}