/* Variables CSS */
/* Variables CSS */
:root {
    --panel-bg: #ffffff;
    --zone-bg: #f8f9fa;
    --zone-border: #e9ecef;
    --header-bg: #ffffff;
    --tab-active-bg: #ffffff;
    --text-muted: #6c757d;
    --primary-color: #0d6efd;
    --border-radius: 0.5rem;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.08);
}

/* Importación de fuentes */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap");

/* Base Styles */
body {
    background: #eef1f4;
    min-height: 100vh;
    color: #212529;
    font-size: 14px;
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        sans-serif;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

body.loaded {
    opacity: 1;
}

/* Layout */
.container-narrow {
    max-width: 1000px;
    padding: 0;
}

.exam-zone {
    position: relative;
    background: #fff;
    border-radius: 1rem;
    padding: 0.25rem;
    margin-bottom: 1rem;
}

/* Controls Panel - Fixed at top */
.controls-panel {
    background: #fff;
    padding: 1.25rem;
    margin-bottom: 1.25rem;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--zone-border);
    position: sticky;
    top: 20px;
    z-index: 1020;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

/* Hide toggle button on desktop */
.controls-toggle {
    display: none;
}

/* Questions Area - Scrollable */
.questions-area {
    background: #fff;
    border-radius: var(--border-radius);
    border: 1px solid var(--zone-border);
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    min-height: 160px;
}

/* Empty state message */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #6c757d;
    font-size: 1.1rem;
    text-align: center;
    background: linear-gradient(to bottom, #f8f9fa, #fff);
    border-radius: var(--border-radius);
    border: 2px dashed #dee2e6;
}

.empty-state i {
    color: var(--primary-color);
}

.empty-state p:first-of-type {
    font-weight: 600;
    font-size: 1.1rem;
    color: #495057;
}

/* Content container */
.controls-wrapper {
    max-width: 100%;
    margin: 0 auto;
}

/* Card body fix */
.card-body {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
}

/* Questions Zone */
#examZone {
    padding: 0 1.25rem;
}

/* Result card */
#resultCard {
    margin: 1.25rem;
}

.exam-container {
    background: var(--panel-bg);
    border: 1px solid var(--zone-border);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

/* Header and Zones */
.header-zone {
    background: var(--header-bg);
    border: 1px solid var(--zone-border);
    border-radius: 1rem;
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.exam-zone {
    background: #fff;
    border: 1px solid var(--zone-border);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

/* Tabs */
.tabs-container {
    width: 100%;
    background: #fff;
    border: none;
    padding: 1.25rem;
}

.nav-tabs {
    margin: 0;
    padding: 0;
    border: none;
    display: flex;
    gap: 0.5rem;
    background: transparent;
}

.nav-tabs .nav-link {
    margin: 0;
    border: none;
    padding: 1rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: all 0.15s ease-in-out;
    position: relative;
    background: transparent;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-tabs .nav-link::before {
    content: attr(data-emoji);
    font-size: 1rem;
    flex-shrink: 0;
}

.nav-tabs .nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: transform 0.2s ease;
}

.nav-tabs .nav-link:hover {
    color: var(--primary-color);
}

.nav-tabs .nav-link.active {
    color: var(--primary-color);
    font-weight: 600;
}

.nav-tabs .nav-link.active::after {
    transform: scaleX(1);
}

.nav-tabs .nav-link:not(.active) {
    opacity: 0.85;
}

.nav-tabs .nav-link:not(.active):hover::after {
    transform: scaleX(0.3);
    background: var(--text-muted);
}

/* Disabled Tab States */
.nav-tabs .nav-link.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    position: relative;
}

.nav-tabs .nav-link.disabled:hover {
    color: var(--text-muted);
}

.nav-tabs .nav-link.disabled::before {
    content: "🔒";
    font-size: 0.9em;
    margin-right: 0.5rem;
    opacity: 0.7;
}

.nav-tabs .nav-link.disabled:hover::before {
    content: "🚫 Debes finalizar el examen actual";
    position: absolute;
    bottom: calc(100% + 5px);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(33, 37, 41, 0.95);
    color: white;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.nav-tabs .nav-link.disabled:hover::after {
    content: "";
    position: absolute;
    bottom: calc(100% + 3px);
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid rgba(33, 37, 41, 0.95);
    z-index: 1000;
}

/* Accordion */
.accordion-item {
    background: #fff;
    border: 1px solid var(--zone-border);
    border-radius: var(--border-radius);
    transition: all 0.2s ease-in-out;
    margin-bottom: 15px;
}

.accordion-item:hover {
    box-shadow: var(--shadow-sm);
}

.accordion-button {
    padding: 0.5rem 1.25rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: #2c3e50;
    background: #cfe2ff;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-button::after {
    margin-left: auto;
    width: 1rem;
    height: 1rem;
    background-size: 1rem;
    flex-shrink: 0;
}

.accordion-button:not(.collapsed) {
    color: var(--primary-color);
    background: #cfe2ff;
    box-shadow: none;
}

.accordion-body {
    padding: 1.25rem;
    font-size: 0.8125rem;
    line-height: 1.5;
    color: #3a4f63;
    background: #fff;
    border-top: 1px solid var(--zone-border);
}

/* Form Elements */
.form-check {
    position: relative;
    display: flex;
    align-items: center;
    margin: 0;
    min-height: 48px;
    padding: 0 0 0 16px;
    gap: 0;
    border-radius: 10px;
}

.form-check-input {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin: 0 12px 0 0;
    cursor: pointer;
    border-width: 2px !important;
    border-color: #cbd5e0 !important;
    transition: all 0.2s ease;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.form-check-input:checked {
    background-color: #0d6efd !important;
    border-color: #0d6efd !important;
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}

.form-check-label {
    position: relative;
    flex-grow: 1;
    margin-left: 0;
    border-radius: 10px;
    line-height: 1.6;
    transition: all 0.2s ease;
    cursor: pointer;
    color: #2d3748;
    display: flex;
    align-items: center;
    min-height: 48px;
    background-color: transparent;
    font-size: 14px;
    font-weight: 450;
}

/* Form States */
.form-check:hover {
    border-color: #0d6efd;
    box-shadow: 0 2px 8px rgba(13, 110, 253, 0.12);
    transform: translateY(-1px);
}

.form-check:has(.form-check-input:checked) {
    border-color: #0d6efd;
}

.form-check-input:checked ~ .form-check-label {
    color: #0d6efd;
    font-weight: 500;
}

.form-check-input:checked {
    background-color: #0d6efd !important;
    border-color: #0d6efd !important;
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}

.question-card.incorrect
    .form-check-input:checked
    + .form-check-label:not(.correct-answer) {
    background-color: #f8d7da;
}

/* Highlight correct answer after exam ends */
.form-check:has(.correct-answer) {
    background-color: #f0fdf4 !important;
    border-color: #22c55e !important;
}

.form-check-label.correct-answer {
    color: #166534 !important;
    font-weight: 500;
    position: relative;
}

.form-check-label.correct-answer::after {
    content: "✓ Correcta";
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #22c55e;
    font-weight: 600;
    font-size: 0.875rem;
    padding: 4px 10px;
    border-radius: 20px;
}

/* Highlight wrong answer chosen by user */
.form-check:has(.wrong-answer) {
    background-color: #fef2f2 !important;
}

.form-check-label.wrong-answer {
    color: #991b1b !important;
    font-weight: 500;
    position: relative;
}

.form-check-label.wrong-answer::after {
    content: "✗ Tu selección";
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #ef4444;
    font-weight: 600;
    font-size: 0.875rem;
    padding: 4px 10px;
    border-radius: 20px;
}

.form-check.hinted {
    background-color: #fefce8 !important;
    border-color: #eab308 !important;
    box-shadow: 0 2px 12px rgba(234, 179, 8, 0.15);
}

.form-check.hinted .form-check-label {
    color: green !important;
}

.form-check.hinted .form-check-label::after {
    content: "💡 Pista";
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #ca8a04;
    font-weight: 800;
    font-size: 0.875rem;
    border-radius: 20px;
}

.question-card.correct {
    border-left: 6px solid #198754;
}

.question-card.incorrect {
    border-left: 6px solid #dc3545;
}

.question-card.unanswered {
    border: 2px solid #ffc107;
    background-color: #fff9e6;
}

/* Controls and UI Elements */
.sticky-control {
    font-family: "Inter", sans-serif;
    transition: all 0.3s ease;
    border: 1px solid var(--zone-border);
}

.sticky-control.stuck {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Questions and Results spacing */
#examZone {
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
}

#resultCard {
    margin-bottom: 1.25rem;
}

/* Question card adjustments */
.question-card {
    margin-bottom: 1.25rem;
    background: #fff;
    border: 1px solid var(--zone-border);
    border-radius: var(--border-radius);
    padding: 0.3rem;
}

/* Lista de preguntas con numeración automática */
.question-list {
    margin: 0;
    padding-left: 1.5em;
    list-style-position: outside;
}

.question-list li {
    padding-left: 0.3em;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.question-list li::marker {
    font-weight: 600;
    color: inherit;
}

.question-list li strong {
    font-weight: 600;
}

.file-label {
    font-size: 0.9rem;
    color: #6c757d;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.file-label.success {
    color: #198754;
}

/* Options Container */
.options-container {
    padding-left: 10px;
    padding-top: 4px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* UI Components */
.eye-btn {
    color: var(--primary-color);
    cursor: pointer;
    opacity: 0.7;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: transparent;
}

.eye-btn:hover {
    opacity: 1;
    background: rgba(13, 110, 253, 0.1);
}

.eye-btn.active {
    color: var(--primary-color);
    opacity: 1;
    background: rgba(13, 110, 253, 0.15);
}

/* Difficulty badges */
.difficulty-badge {
    display: inline-flex;
    align-items: center;
    gap: 1px;
    background-color: rgba(0, 0, 0, 0.03);
}

.diff-dot {
    width: 8px;
    height: 8px;
    border-radius: 1px;
    display: inline-block;
}

.diff-flame {
    font-size: 12px;
    line-height: 1;
    display: inline-block;
    margin-left: 1px;
    animation: flicker 1.5s infinite alternate;
}

@keyframes flicker {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

.difficulty-easy .diff-dot {
    background-color: #198754;
}

.difficulty-medium .diff-dot {
    background-color: #fd7e14;
}

.difficulty-hard .diff-dot {
    background-color: #dc3545;
}

.difficulty-very-hard .diff-dot {
    background-color: #6f42c1;
}

/* KPI Cards */
.kpi {
    text-align: center;
}

.kpi-card {
    background: linear-gradient(to bottom, #ffffff, #fafbfc);
    border: 1px solid var(--zone-border);
    border-radius: var(--border-radius);
    padding: 0.75rem;
}

.kpi-value {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: 0.25rem;
}

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

.bank-info {
    animation: fadeIn 0.3s ease-in-out;
}

/* Additional components */
.accordion-body p {
    margin-bottom: 0.75rem;
    color: #3a4f63;
}

.accordion-body ul.exam-specs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.exam-content-summary {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--zone-border);
    font-size: 0.8125rem;
}

.exam-topics {
    display: inline;
    color: var(--text-muted);
}

/* Footer styles */
footer hr {
    opacity: 0.15;
}

footer .copyright {
    font-size: 0.7rem;
}

footer .trademark {
    font-size: 0.55rem;
    opacity: 0.75;
}

/* Estilos para el botón de resaltar pendientes */
#btnHighlightUnanswered.active {
    background-color: transparent !important;
    border-color: #ffc107 !important;
    color: #ffc107 !important;
    box-shadow: 0 0 0 0.2rem rgba(255, 193, 7, 0.25) !important;
}

#btnHighlightUnanswered.active:hover {
    background-color: rgba(255, 193, 7, 0.1) !important;
    border-color: #ffc107 !important;
    color: #ffc107 !important;
}

#btnHighlightUnanswered.active:focus {
    background-color: transparent !important;
    border-color: #ffc107 !important;
    color: #ffc107 !important;
    box-shadow: 0 0 0 0.2rem rgba(255, 193, 7, 0.25) !important;
}

/* Custom Modal/Alert System */
.custom-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeIn 0.2s ease-in-out;
}

.custom-modal {
    background: white;
    border-radius: 1rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 90%;
    overflow: hidden;
    animation: slideDown 0.3s ease-out;
}

.custom-modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e9ecef;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.custom-modal-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.custom-modal-icon.warning {
    background: #fff3cd;
    color: #856404;
}

.custom-modal-icon.info {
    background: #cfe2ff;
    color: #084298;
}

.custom-modal-icon.success {
    background: #d1e7dd;
    color: #0f5132;
}

.custom-modal-icon.error {
    background: #f8d7da;
    color: #842029;
}

.custom-modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    color: #212529;
}

.custom-modal-body {
    padding: 1.5rem;
    font-size: 0.9375rem;
    line-height: 1.6;
    color: #495057;
}

.custom-modal-footer {
    padding: 1rem 1.5rem;
    background: #f8f9fa;
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

.custom-modal-button {
    padding: 0.5rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.custom-modal-button.primary {
    background: #0d6efd;
    color: white;
}

.custom-modal-button.primary:hover {
    background: #0b5ed7;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(13, 110, 253, 0.3);
}

.custom-modal-button.secondary {
    background: #6c757d;
    color: white;
}

.custom-modal-button.secondary:hover {
    background: #5c636a;
}

.custom-modal-button.danger {
    background: #dc3545;
    color: white;
}

.custom-modal-button.danger:hover {
    background: #bb2d3b;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
}

.custom-modal-button.outline {
    background: transparent;
    border: 1px solid #dee2e6;
    color: #495057;
}

.custom-modal-button.outline:hover {
    background: #f8f9fa;
}

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

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

@keyframes slideDown {
    from {
        transform: translateY(-30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Responsive styles for mobile only (not tablet) */
@media (max-width: 768px) {
    .container-narrow {
        padding: 0 0.5rem;
        margin-top: 0.5rem !important;
        margin-bottom: 0.5rem !important;
    }

    .exam-zone {
        border-radius: 0.75rem;
        margin-bottom: 0.25rem;
    }

    /* Mobile tabs: show full names with icons and allow wrapping */
    .nav-tabs {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.15rem; /* Reduced gap between tabs */
    }

    .nav-tabs .nav-item {
        flex: 1;
        max-width: calc(50% - 0.075rem); /* 2 tabs per row */
        display: flex;
    }

    .nav-tabs .nav-link {
        padding: 0.4rem 0.6rem;
        font-size: 0.7rem;
        white-space: nowrap;
        min-width: 0;
        flex: 1;
        width: 100%;
        display: flex;
        align-items: center;
        gap: 0.25rem;
    }

    .nav-tabs .nav-link::before {
        content: attr(data-emoji);
        font-size: 0.8rem;
        flex-shrink: 0;
    }

    /* Ensure active tab underline spans full width in mobile and tablet */
    .nav-tabs .nav-link.active::after {
        left: 0 !important;
        right: 0 !important;
        width: auto !important;
        transform: none !important;
    }

    .accordion-button:focus,
    .accordion-button:active,
    .accordion-button:focus-visible {
        outline: none !important;
        box-shadow: none !important;
        border: none !important;
    }

    .controls-panel {
        padding: 0.5rem;
        margin-bottom: 0.25rem;
        top: 5px;
        transition: all 0.3s ease;
    }

    .controls-panel.minimized .controls-content {
        display: none;
    }

    .controls-panel.minimized {
        padding: 0.25rem 0.5rem;
    }

    .controls-toggle {
        display: block !important;
        text-align: center;
        padding: 0.15rem;
        cursor: pointer;
        color: #6c757d;
        font-size: 0.65rem;
        user-select: none;
    }

    .controls-toggle i {
        font-size: 0.65rem;
        transition: transform 0.3s ease;
    }

    .controls-panel.minimized .controls-toggle i {
        transform: rotate(180deg);
    }

    .header-zone {
        padding: 0.75rem 0.5rem;
        margin-bottom: 0.25rem;
        text-align: left;
    }

    /* Header content alignment for mobile */
    .header-zone .text-center {
        text-align: left !important;
    }

    /* Logo also left-aligned on mobile/tablet */
    .header-zone .mb-2 {
        text-align: left !important;
    }

    /* Reduce logo size on mobile */
    .header-zone img {
        width: 120px !important;
        height: auto !important;
    }

    .question-card {
        margin-left: 0;
        margin-right: 0;
        margin-bottom: 0.75rem !important;
    }

    .question-card .card-body {
        padding: 0.6rem 0.5rem !important;
    }

    /* Reducir tamaño de letra en tarjetas de preguntas */
    .question-card .card-body strong {
        font-size: 0.85rem !important;
        line-height: 1.35 !important;
    }

    .question-card .small {
        font-size: 0.7rem !important;
    }

    /* Ajustar sangrado de preguntas en móvil */
    .question-card .card-body > div:has(strong) {
        padding-left: 1.8em !important;
        text-indent: -1.8em !important;
    }

    .options-container {
        padding-left: 0 !important;
        padding-right: 0 !important;
    }

    .form-check {
        padding-left: 0.2rem !important;
        padding-right: 0.2rem !important;
        gap: 2px!important;
    }

    .form-check.hinted {
        font-weight: 800 !important;
    }

    .form-check-label {
        font-size: 0.80rem !important;
        line-height: 1.1 !important;
        padding-right: 20px !important;
    }

    body {
        padding: 0;
    }

    /* KPIs en una sola línea horizontal ultra-compacta */
    .kpi-row {
        display: flex !important;
        flex-direction: row !important;
        gap: 0.2rem;
        margin-bottom: 0.4rem !important;
    }

    .kpi-row .col-md-4 {
        flex: 1;
        max-width: none !important;
        padding: 0 !important;
    }

    .kpi-card {
        padding: 0.3rem 0.2rem !important;
        min-height: auto !important;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    /* Ocultar títulos de KPI en móvil */
    .kpi-label {
        display: none !important;
    }

    .kpi-value {
        font-size: 0.75rem !important;
        font-weight: 600 !important;
        line-height: 1.2;
        text-align: center;
        margin-bottom: 0 !important;
    }

    .kpi-value .h5 {
        font-size: 0.8rem !important;
    }

    .kpi-value .text-muted {
        font-size: 0.6rem !important;
    }

    /* Ocultar información extra del primer KPI */
    .kpi .text-muted.small {
        display: none !important;
    }

    /* Temporizador más compacto en móvil */
    #timer {
        font-size: 0.8rem !important;
        line-height: 1.2 !important;
    }

    /* Ocultar texto "Restante" del temporizador */
    .kpi:nth-child(3) .text-muted {
        display: none !important;
    }

    /* Botones de control en 1 sola línea */
    .btn-group-controls {
        display: grid !important;
        grid-template-columns: 1.5fr 1.5fr 1.5fr 2.5fr 2.5fr;
        gap: 0.2rem;
    }

    .btn-group-controls > div {
        grid-column: span 1;
    }

    .btn-group-controls .btn {
        font-size: 0.75rem !important;
        padding: 0.3rem 0.2rem !important;
        white-space: nowrap;
        line-height: 1.1;
        font-weight: 600 !important;
    }

    .btn-group-controls .btn i {
        display: none;
    }

    /* Barra de progreso en móvil */
    .progress {
        height: 0.4rem !important;
    }

    /* Reducir espacio en card del panel */
    .controls-panel .card-body {
        padding-top: 0 !important;
        padding-right: 0.25rem !important;
        padding-left: 0.25rem !important;
        padding-bottom: 0 !important;
    }

    /* Empty state más compacto en móvil */
    .empty-state {
        font-size: 0.8rem !important;
        min-height: 100px !important;
        padding: 0.8rem !important;
    }

    .empty-state i {
        font-size: 1.8rem !important;
    }

    .empty-state p:first-of-type {
        font-size: 0.85rem !important;
    }

    .empty-state p {
        font-size: 0.7rem !important;
        margin-bottom: 0.25rem !important;
    }

    /* Respuestas correctas/incorrectas: solo iconos en móvil */
    .form-check-label.correct-answer::after {
        content: "✓" !important;
        right: -5px !important;
        font-size: 1rem !important;
        background-color: transparent!important;
    }

    .form-check-label.wrong-answer::after {
        content: "✗" !important;
        right: -5px !important;
        font-size: 1rem !important;
        background-color: transparent!important;
    }

    /* Reducir padding horizontal del examZone */
    #examZone {
        padding: 0 0.5rem !important;
        margin-top: 0.5rem !important;
        margin-bottom: 0.5rem !important;
    }

    .questions-area {
        min-height: 0 !important;
    }
}

/* Tablet portrait specific adjustments (820x1180) - now applies to tablets only */
@media (min-width: 769px) and (max-width: 820px) and (max-height: 1200px) {
    .btn-group-controls {
        grid-template-columns: 1fr 1fr 1fr 3fr 3fr !important;
    }
}