/* /Applications/ServBay/www/servbay/olim/styles.css */
/* CBT OSN-K Simulator Premium Dark Mode Styling */

:root {
    --bg-app: #09090b;          /* Zinc 950 */
    --bg-card: #18181b;         /* Zinc 900 */
    --bg-card-hover: #27272a;   /* Zinc 800 */
    --bg-input: #0f0f11;
    --text-primary: #f4f4f5;    /* Zinc 100 */
    --text-secondary: #a1a1aa;  /* Zinc 400 */
    --text-muted: #71717a;      /* Zinc 500 */
    
    --color-primary: #6366f1;   /* Indigo 500 */
    --color-primary-hover: #4f46e5;
    --color-primary-glow: rgba(99, 102, 241, 0.15);
    
    --color-success: #10b981;   /* Emerald 500 */
    --color-success-hover: #059669;
    --color-success-glow: rgba(16, 185, 129, 0.15);
    
    --color-danger: #f43f5e;    /* Rose 500 */
    --color-danger-hover: #e11d48;
    --color-danger-glow: rgba(244, 63, 94, 0.15);
    
    --color-warning: #f59e0b;   /* Amber 500 */
    --color-warning-hover: #d97706;
    --color-warning-glow: rgba(245, 158, 11, 0.15);
    
    --border-color: #27272a;    /* Zinc 800 */
    --border-color-focus: #3f3f46;
    
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', "Courier New", Courier, monospace;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
    
    --font-scale: 1.0; /* Diubah secara dinamis melalui JS */
}

/* Reset & Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition: background-color 0.2s, border-color 0.2s;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-app);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

code, pre {
    font-family: var(--font-mono);
}

/* App Container and Pages */
.app-container {
    width: 100vw;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: stretch;
    position: relative;
}

.screen {
    display: none;
    width: 100%;
    animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.screen.active-screen {
    display: flex;
    flex-direction: column;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.98); }
    to { opacity: 1; transform: scale(1); }
}

/* Card and Common UI Components */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 2.5rem;
    max-width: 100%;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 9999px;
    background-color: var(--color-primary-glow);
    color: #a5b4fc; /* Indigo 300 */
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.badge-success {
    background-color: var(--color-success-glow);
    color: #6ee7b7; /* Emerald 300 */
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.6rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    outline: none;
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background-color: var(--bg-card-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--border-color-focus);
    border-color: var(--text-secondary);
}

.btn-danger {
    background-color: var(--color-danger);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(244, 63, 94, 0.3);
}

.btn-danger:hover {
    background-color: var(--color-danger-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(244, 63, 94, 0.4);
}

.btn-success {
    background-color: var(--color-success);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-success:hover:not(:disabled) {
    background-color: var(--color-success-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.4);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.btn-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-card-hover);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-weight: bold;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.btn-icon:hover {
    background-color: var(--border-color-focus);
    border-color: var(--text-secondary);
}

/* Input Fields */
.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.input-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.input-group input {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.8rem 1rem;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: all 0.2s;
}

.input-group input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.token-helper {
    font-weight: normal;
    font-size: 0.75rem;
    color: var(--text-muted);
}
.token-helper code {
    background-color: var(--bg-card-hover);
    padding: 0.1rem 0.3rem;
    border-radius: 4px;
    color: var(--color-primary);
}

/* Info Box */
.info-box {
    background-color: rgba(99, 102, 241, 0.05);
    border: 1px dashed rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin-bottom: 2rem;
}

.info-box h3 {
    font-size: 1rem;
    color: #a5b4fc;
    margin-bottom: 0.5rem;
}

.info-box ul {
    list-style-position: inside;
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.info-box ul ul {
    padding-left: 1.25rem;
    margin-top: 0.2rem;
    font-size: 0.85rem;
}

/* ================= WELCOME SCREEN ================= */
#welcome-screen {
    justify-content: center;
    align-items: center;
    background: radial-gradient(circle at top, #1e1b4b 0%, #09090b 100%); /* Deep Indigo to black */
    padding: 1.5rem;
}

.welcome-card {
    width: 100%;
    max-width: 580px;
}

.welcome-header {
    text-align: center;
    margin-bottom: 2rem;
}

.welcome-header h1 {
    font-size: 2.25rem;
    font-weight: 800;
    margin-top: 0.5rem;
    letter-spacing: -0.025em;
    background: linear-gradient(to right, #ffffff, #a5b4fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.welcome-header .subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-top: 0.25rem;
}

.welcome-footer {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

/* ================= CBT TEST ENVIRONMENT SCREEN ================= */
#cbt-screen {
    background-color: var(--bg-app);
    height: 100vh;
    max-height: 100vh;
    flex-direction: column;
}

/* Header CBT */
.cbt-header {
    height: 70px;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    z-index: 10;
}

.header-left, .header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.logo-box {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    user-select: none;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text h2 {
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.logo-text .sub-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    display: block;
    margin-top: -3px;
}

.text-resizer {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    border-left: 1px solid var(--border-color);
    padding-left: 1.25rem;
}

.font-size-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.header-user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.header-user-info .user-name {
    font-size: 0.9rem;
    font-weight: 600;
}

.connection-status {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    display: inline-block;
}

.dot.green {
    background-color: var(--color-success);
    box-shadow: 0 0 8px var(--color-success);
}

.timer-box {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--color-warning);
    min-width: 110px;
    justify-content: center;
}

/* CBT Main Layout (Split Pane) */
.cbt-main {
    flex: 1;
    display: flex;
    overflow: hidden;
    position: relative;
}

.pane {
    height: 100%;
    overflow-y: auto;
}

.question-pane {
    flex: 1;
    padding: 2rem 3rem;
}

/* SVG Icon Utilities */
.svg-icon-header {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    display: inline-block;
    vertical-align: middle;
}
.svg-icon-inline {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    display: inline-block;
    vertical-align: middle;
    margin-right: 4px;
}
.svg-icon-modal {
    width: 48px;
    height: 48px;
    stroke: var(--color-danger);
    display: inline-block;
}

/* Styling for relocated Daftar Soal card */
.question-pane .nav-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    margin-top: 3rem;
    margin-bottom: 2rem;
}

.question-pane .nav-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
}

.question-pane .question-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(48px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.question-pane .grid-item {
    aspect-ratio: 1;
    width: 100%;
    max-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-card-hover);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.question-pane .grid-item:hover {
    background-color: var(--border-color-focus);
    color: var(--text-primary);
}

.question-pane .grid-item.active {
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.3);
    color: var(--text-primary);
}

.question-pane .grid-item.answered {
    background-color: var(--color-success);
    border-color: var(--color-success);
    color: #ffffff;
}

.question-pane .grid-item.flagged {
    background-color: var(--color-warning);
    border-color: var(--color-warning);
    color: #ffffff;
}

.question-pane .nav-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.25rem;
}

.question-pane .nav-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.25rem;
}

/* Scrollbar Customization */
.pane::-webkit-scrollbar {
    width: 8px;
}
.pane::-webkit-scrollbar-track {
    background: transparent;
}
.pane::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
.pane::-webkit-scrollbar-thumb:hover {
    background: var(--border-color-focus);
}

/* Question Header & Body */
.question-header {
    margin-bottom: 1.5rem;
}

.question-badge {
    font-size: 0.8rem;
    color: var(--color-primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 0.35rem;
}

#question-title {
    font-size: 1.4rem;
    font-weight: 700;
}

.question-body {
    font-size: calc(1rem * var(--font-scale));
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

/* Code Blocks Styling in Questions */
.question-body pre {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin: 1.5rem 0;
    overflow-x: auto;
    box-shadow: var(--shadow-sm);
    position: relative;
}

/* C++ Terminal mimic */
.question-body pre::before {
    content: "";
    position: absolute;
    top: 10px;
    left: 12px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #fc5753;
    box-shadow: 15px 0 0 #fdbc40, 30px 0 0 #33c748;
}

.question-body code {
    font-size: calc(0.9rem * var(--font-scale));
    color: #e2e8f0;
    display: block;
    margin-top: 10px; /* offset for circles */
}

/* Latex Inline and Display */
.katex {
    font-size: 1.05em;
}

/* CBT Table inside questions */
.cbt-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: calc(0.95rem * var(--font-scale));
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.cbt-table th, .cbt-table td {
    padding: 0.75rem 1rem;
    text-align: center;
    border: 1px solid var(--border-color);
}

.cbt-table th {
    background-color: var(--bg-card-hover);
    color: var(--text-primary);
    font-weight: 600;
}

.cbt-table td {
    background-color: var(--bg-card);
    color: var(--text-secondary);
}

/* Diagram Container for SVG graphics */
.diagram-container {
    display: flex;
    justify-content: center;
    margin: 1.5rem 0;
}

.svg-diagram {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    background-color: #121214;
}

.svg-diagram circle {
    transition: fill 0.3s, stroke 0.3s;
}

.svg-diagram text {
    user-select: none;
}

/* Choice Cards (Multiple Choice) */
.choice-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1rem;
    margin-bottom: 2rem;
}

.choice-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    position: relative;
    user-select: none;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.choice-card:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--border-color-focus);
}

.choice-card input[type="radio"] {
    display: none;
}

.choice-indicator {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s;
}

.choice-card.selected {
    border-color: var(--color-primary);
    background-color: var(--color-primary-glow);
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.1);
}

.choice-card.selected .choice-indicator {
    border-color: var(--color-primary);
    background-color: var(--color-primary);
}

.choice-card.selected .choice-indicator::after {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #ffffff;
}

.choice-text {
    font-size: calc(0.95rem * var(--font-scale));
    font-weight: 500;
}

/* Short Answer Input Field */
.short-answer-container {
    margin-top: 1rem;
    margin-bottom: 2rem;
}

.text-input {
    width: 100%;
    max-width: 450px;
    background-color: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.9rem 1.25rem;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 1.1rem;
    outline: none;
    transition: all 0.2s;
}

.text-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

.input-instruction {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Tutor Mode section */
.tutor-mode-section {
    border-top: 1px dashed var(--border-color);
    margin-top: 2.5rem;
    padding-top: 2rem;
}

.tutor-collapse-btn {
    width: 100%;
    background-color: rgba(245, 158, 11, 0.05);
    border: 1px solid rgba(245, 158, 11, 0.2);
    color: #f59e0b;
    border-radius: var(--radius-md);
    padding: 0.9rem 1.25rem;
    font-size: 0.95rem;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    outline: none;
}

.tutor-collapse-btn:hover {
    background-color: rgba(245, 158, 11, 0.1);
}

.tutor-collapse-btn .arrow-icon {
    font-size: 0.75rem;
    transition: transform 0.3s;
}

.tutor-collapse-btn.expanded .arrow-icon {
    transform: rotate(180deg);
}

.tutor-solution-content {
    display: none;
    animation: slideDown 0.3s ease-out;
    padding: 1.5rem;
    background-color: #121214;
    border: 1px solid var(--border-color);
    border-top: none;
    border-bottom-left-radius: var(--radius-md);
    border-bottom-right-radius: var(--radius-md);
}

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

.answer-key-box {
    background-color: var(--color-success-glow);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: #34d399; /* Emerald 400 */
    border-radius: var(--radius-sm);
    padding: 0.6rem 1rem;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    display: inline-block;
}

.discussion-box h5 {
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.discussion-box {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ================= RIGHT PANEL (NAVIGATION) ================= */
.nav-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.nav-header h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.grid-scroll-container {
    flex: 1;
    overflow-y: auto;
    margin-bottom: 1.5rem;
    padding-right: 0.25rem;
}

.question-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.6rem;
}

.grid-item {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-card-hover);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.grid-item:hover {
    background-color: var(--border-color-focus);
    color: var(--text-primary);
}

.grid-item.active {
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.3);
    color: var(--text-primary);
}

.grid-item.answered {
    background-color: var(--color-success);
    border-color: var(--color-success);
    color: #ffffff;
}

.grid-item.flagged {
    background-color: var(--color-warning);
    border-color: var(--color-warning);
    color: #ffffff;
}

.grid-item.flagged.answered {
    background-color: var(--color-warning);
    border-color: var(--color-warning);
    color: #ffffff;
}

/* Legend dots */
.nav-legend {
    border-top: 1px solid var(--border-color);
    padding-top: 1.25rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.legend-item {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    background-color: var(--text-muted);
}

.legend-dot.current {
    border: 1.5px solid var(--color-primary);
    box-shadow: 0 0 4px var(--color-primary);
    background-color: transparent;
}

.legend-dot.answered {
    background-color: var(--color-success);
}

.legend-dot.flagged {
    background-color: var(--color-warning);
}

.legend-dot.empty {
    background-color: var(--bg-card-hover);
    border: 1px solid var(--border-color);
}

.nav-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* Footer Navigation Controls */
.cbt-footer {
    height: 70px;
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    z-index: 10;
}

.btn-flag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.8rem 1.6rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.btn-flag:hover {
    background-color: var(--bg-card-hover);
    color: var(--text-primary);
}

.btn-flag.active-flag {
    background-color: var(--color-warning-glow);
    border-color: var(--color-warning);
    color: var(--color-warning);
}

/* ================= SCREEN 3: SUMMARY & SUBMISSION ================= */
#summary-screen {
    justify-content: center;
    align-items: center;
    background-color: var(--bg-app);
    padding: 2.5rem;
}

.summary-card {
    width: 100%;
    max-width: 900px;
}

.summary-body {
    margin: 2rem 0;
}

.summary-grid-container {
    max-height: 380px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: #0c0c0e;
    margin-bottom: 1.5rem;
}

.summary-table {
    width: 100%;
    border-collapse: collapse;
}

.summary-table th, .summary-table td {
    padding: 0.9rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.summary-table th {
    background-color: var(--bg-card-hover);
    color: var(--text-primary);
    font-weight: 600;
    position: sticky;
    top: 0;
}

.summary-table td {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.summary-table tr:last-child td {
    border-bottom: none;
}

.status-tag {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: bold;
}

.status-tag.unanswered {
    background-color: var(--color-danger-glow);
    color: var(--color-danger);
}

.status-tag.answered {
    background-color: var(--color-success-glow);
    color: var(--color-success);
}

.status-tag.flagged {
    background-color: var(--color-warning-glow);
    color: var(--color-warning);
}

.warning-banner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background-color: var(--color-warning-glow);
    border: 1px solid rgba(245, 158, 11, 0.2);
    color: #fbbf24;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.warning-banner .warning-icon {
    font-size: 1.25rem;
}

.confirmation-section {
    padding: 0.5rem 0;
}

.confirm-checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.confirm-checkbox-label input[type="checkbox"] {
    display: none;
}

.custom-checkbox {
    width: 22px;
    height: 22px;
    border: 2px solid var(--text-secondary); /* Lighter border color for high visibility */
    border-radius: var(--radius-sm);
    display: inline-block;
    flex-shrink: 0;
    margin-top: 1px;
    position: relative;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.confirm-checkbox-label:hover .custom-checkbox {
    border-color: var(--color-success);
    box-shadow: 0 0 0 3px var(--color-success-glow);
}

.confirm-checkbox-label input[type="checkbox"]:checked + .custom-checkbox {
    background-color: var(--color-success);
    border-color: var(--color-success);
}

.confirm-checkbox-label input[type="checkbox"]:checked + .custom-checkbox::after {
    content: "✓";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #ffffff;
    font-size: 0.95rem; /* Larger and clearer checkmark */
    font-weight: 900;
}

.summary-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

/* ================= SCREEN 4: RESULTS & STATISTICS ================= */
#results-screen {
    justify-content: center;
    align-items: center;
    background-color: var(--bg-app);
    padding: 2.5rem;
}

.results-card {
    width: 100%;
    max-width: 900px;
}

.results-header {
    text-align: center;
    margin-bottom: 2rem;
}

.results-header h1 {
    font-size: 2rem;
    margin-top: 0.5rem;
}

.results-body {
    margin-bottom: 2.5rem;
}

.score-summary-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4rem;
    background-color: rgba(99, 102, 241, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
}

.score-circle-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.score-circle {
    width: 130px;
    height: 130px;
    border-radius: 50%;
    border: 6px solid var(--color-primary);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-input);
}

.score-circle .score-num {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary);
}

.score-circle .score-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: bold;
    text-transform: uppercase;
}

.score-raw {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stats-panel {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.stat-card {
    background-color: var(--bg-card-hover);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem 2rem;
    min-width: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-num {
    font-size: 1.75rem;
    font-weight: 800;
}

.stat-num.correct {
    color: var(--color-success);
}

.stat-num.incorrect {
    color: var(--color-danger);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: bold;
}

/* Category Performance Bars */
.category-section {
    margin-bottom: 2.5rem;
}

.category-section h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 1rem;
    border-left: 3px solid var(--color-primary);
    padding-left: 0.75rem;
}

.category-bars {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.category-bar-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.category-bar-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 600;
}

.category-bar-label .label-text {
    color: var(--text-primary);
}

.category-bar-label .label-score {
    color: var(--color-primary);
}

.bar-track {
    height: 10px;
    background-color: var(--bg-input);
    border-radius: 9999px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.bar-fill {
    height: 100%;
    background: linear-gradient(to right, var(--color-primary), #818cf8);
    border-radius: 9999px;
    width: 0%;
    transition: width 1s ease-out;
}

/* Review Section */
.review-toggle-header {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    margin-bottom: 1.5rem;
}

.review-toggle-header h3 {
    font-size: 1.05rem;
    font-weight: 700;
}

.review-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.review-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
}

.review-item.correct-item {
    border-left: 4px solid var(--color-success);
}

.review-item.incorrect-item {
    border-left: 4px solid var(--color-danger);
}

.review-item.empty-item {
    border-left: 4px solid var(--text-muted);
}

.review-q-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

.review-badge {
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: 700;
}

.review-badge.correct {
    background-color: var(--color-success-glow);
    color: #34d399;
}

.review-badge.incorrect {
    background-color: var(--color-danger-glow);
    color: #f43f5e;
}

.review-badge.empty {
    background-color: var(--bg-card-hover);
    color: var(--text-secondary);
}

.review-user-ans {
    margin: 1rem 0;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
}

.review-user-ans span {
    font-weight: bold;
}

.review-user-ans.user-correct span {
    color: var(--color-success);
}

.review-user-ans.user-incorrect span {
    color: var(--color-danger);
}

.review-solution-box {
    margin-top: 1.5rem;
    padding: 1.25rem;
    background-color: #121214;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.review-solution-box h5 {
    color: var(--text-primary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.results-footer {
    display: flex;
    justify-content: center;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
}

/* ================= MODAL DIALOGS ================= */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(5px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: 1.5rem;
    animation: fadeInModal 0.25s ease-out;
}

.modal-overlay.active-modal {
    display: flex;
}

@keyframes fadeInModal {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 2rem;
    width: 100%;
    max-width: 440px;
    animation: zoomInModal 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes zoomInModal {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.modal-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.modal-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

.error-text {
    font-size: 0.8rem;
    color: var(--color-danger);
    display: none;
    margin-top: 0.25rem;
}

/* Warning Warning Card (Anti Cheat) */
.warning-card {
    text-align: center;
    border: 2px solid var(--color-danger);
}

.modal-icon-header {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.warning-count-box {
    background-color: var(--color-danger-glow);
    color: #fda4af; /* Rose 300 */
    border: 1px dashed rgba(244, 63, 94, 0.3);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.warning-count {
    color: var(--color-danger);
    font-size: 1.4rem;
}

/* ================= RESPONSIVE LAYOUTS ================= */
@media (max-width: 992px) {
    .cbt-header {
        padding: 0 1rem;
    }
    
    .question-pane {
        padding: 1.25rem 1.5rem;
    }
    
    .score-summary-row {
        flex-direction: column;
        gap: 2rem;
    }
}

@media (max-width: 576px) {
    .welcome-card, .summary-card, .results-card {
        padding: 1.5rem;
    }
    
    .cbt-footer {
        padding: 0 1rem;
    }
    
    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.875rem;
    }
    
    .btn-flag {
        padding: 0.6rem 1.2rem;
    }
    
    .question-pane .nav-card {
        padding: 1.25rem;
    }
}