* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary-color: #4361ee;
    --secondary-color: #3a0ca3;
    --accent-color: #7209b7;
    --light-color: #f8f9fa;
    --dark-color: #2b2d42;
    --success-color: #06d6a0;
    --warning-color: #ffd166;
    --danger-color: #ef476f;
    --text-color: #2b2d42;
    --text-light: #6c757d;
    --border-radius: 10px;
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

body {
    background-color: #f5f7fa;
    color: var(--text-color);
    line-height: 1.6;
    font-size: 16px;
}

.page-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}


header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    color: white;
    padding: 1.2rem 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 10;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.2);
}

.logo i {
    margin-right: 0.8rem;
    font-size: 2rem;
    animation: pulse 2s infinite;
}

h1 {
    font-size: 1.6rem;
    text-align: center;
    flex-grow: 1;
    margin: 0 1.5rem;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.2);
}

.header-controls {
    display: flex;
    gap: 0.8rem;
}

.control-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.control-btn:active {
    transform: translateY(0) scale(0.98);
}


.tema-info {
    background-color: white;
    padding: 2rem;
    margin: 1.5rem auto;
    max-width: 1400px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transform: translateY(0);
    transition: var(--transition);
}

.tema-info:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.tema-title {
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
}

.tema-title::after {
    content: '';
    display: block;
    width: 100px;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    margin: 1rem auto 0;
    border-radius: 3px;
}

.tema-title h2 {
    font-size: 2rem;
    color: var(--dark-color);
    margin-bottom: 0.8rem;
    line-height: 1.3;
}

.subtitle {
    color: var(--text-light);
    font-size: 1rem;
    margin-bottom: 0.3rem;
}

.tema-goals {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2.5rem;
}

.goal-card {
    display: flex;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 1.8rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

.goal-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.goal-card:nth-child(2) {
    border-left-color: var(--secondary-color);
}

.goal-card:nth-child(3) {
    border-left-color: var(--accent-color);
}

.goal-icon {
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-right: 1.2rem;
    display: flex;
    align-items: center;
}

.goal-card:nth-child(2) .goal-icon {
    color: var(--secondary-color);
}

.goal-card:nth-child(3) .goal-icon {
    color: var(--accent-color);
}

.goal-content h3 {
    color: var(--dark-color);
    margin-bottom: 0.8rem;
    font-size: 1.3rem;
}


.tabs-container {
    max-width: 1400px;
    margin: 1.5rem auto;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    position: relative;
}

.tab-buttons {
    display: flex;
    background-color: var(--light-color);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    overflow-x: auto;
    position: relative;
    z-index: 1;
}

.tab-buttons::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
}

.tab-btn {
    padding: 1.2rem 1.8rem;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.05rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    transition: var(--transition);
    white-space: nowrap;
    border-bottom: 3px solid transparent;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.tab-btn i {
    margin-right: 0.8rem;
    font-size: 1.3rem;
}

.tab-btn::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.tab-btn:hover {
    color: var(--primary-color);
    background-color: rgba(67, 97, 238, 0.05);
}

.tab-btn:hover::before {
    transform: translateX(0);
}

.tab-btn.active {
    color: var(--primary-color);
    background-color: rgba(67, 97, 238, 0.08);
}

.tab-btn.active::before {
    transform: translateX(0);
}


.tab-content {
    padding: 2rem;
}

.tab-pane {
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.tab-pane.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
    animation: fadeInUp 0.5s ease forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
}

.section-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100px;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    border-radius: 3px;
}

.section-header h3 {
    color: var(--dark-color);
    font-size: 1.8rem;
    position: relative;
    padding-left: 15px;
}

.section-header h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 5px;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
    border-radius: 3px;
}

.progress-indicator {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.progress-bar {
    width: 180px;
    height: 8px;
    background-color: #e9ecef;
    border-radius: 4px;
    margin-bottom: 0.6rem;
    position: relative;
    overflow: hidden;
}

.progress-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    border-radius: 4px;
    transition: width 1.5s ease;
}

.tab-pane.active .progress-bar::before {
    width: 25%;
}

#tab2.active .progress-bar::before {
    width: 50%;
}

#tab3.active .progress-bar::before {
    width: 75%;
}

#tab4.active .progress-bar::before {
    width: 100%;
}

.progress-indicator span {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 500;
}


.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 992px) {
    .content-grid {
        grid-template-columns: 3fr 2fr;
    }
}


.accordion {
    margin-bottom: 2rem;
}

.accordion-item {
    margin-bottom: 1.2rem;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    background-color: white;
    transition: var(--transition);
}

.accordion-item:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.accordion-header {
    padding: 1.2rem 1.5rem;
    background-color: var(--light-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 500;
    color: var(--dark-color);
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

.accordion-header:hover {
    background-color: rgba(67, 97, 238, 0.05);
}

.accordion-item:nth-child(2) .accordion-header {
    border-left-color: var(--secondary-color);
}

.accordion-item:nth-child(3) .accordion-header {
    border-left-color: var(--accent-color);
}

.accordion-item:nth-child(4) .accordion-header {
    border-left-color: var(--success-color);
}

.accordion-header i:first-child {
    margin-right: 1rem;
    color: var(--primary-color);
    font-size: 1.2rem;
}

.accordion-item:nth-child(2) .accordion-header i:first-child {
    color: var(--secondary-color);
}

.accordion-item:nth-child(3) .accordion-header i:first-child {
    color: var(--accent-color);
}

.accordion-item:nth-child(4) .accordion-header i:first-child {
    color: var(--success-color);
}

.accordion-content {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.6s ease, padding 0.6s ease;
}

.accordion-item.active .accordion-content {
    padding: 1.8rem;
    max-height: 2000px; 
}

.accordion-item.active .accordion-header {
    background-color: rgba(67, 97, 238, 0.08);
}


.visual-content {
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 1.8rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.visual-content:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.visual-content h4 {
    color: var(--dark-color);
    margin-bottom: 1.5rem;
    text-align: center;
    position: relative;
    padding-bottom: 0.8rem;
}

.visual-content h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    border-radius: 3px;
}


.component-card {
    display: flex;
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.8rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

.component-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.component-card:nth-child(2) {
    border-left-color: var(--secondary-color);
}

.component-card:nth-child(3) {
    border-left-color: var(--accent-color);
}

.component-icon {
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-right: 1.2rem;
    display: flex;
    align-items: center;
}

.component-card:nth-child(2) .component-icon {
    color: var(--secondary-color);
}

.component-card:nth-child(3) .component-icon {
    color: var(--accent-color);
}

.component-content h4 {
    color: var(--dark-color);
    margin-bottom: 0.8rem;
    text-align: left;
    padding-bottom: 0;
}

.component-content h4::after {
    display: none;
}


.virtualization-types {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.virtualization-type {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.8rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border-top: 4px solid var(--primary-color);
}

.virtualization-type:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.virtualization-type:nth-child(2) {
    border-top-color: var(--secondary-color);
}

.virtualization-type:nth-child(3) {
    border-top-color: var(--accent-color);
}

.virtualization-type h4 {
    color: var(--dark-color);
    margin-bottom: 1rem;
    text-align: left;
    padding-bottom: 0.8rem;
    border-bottom: 2px solid rgba(0, 0, 0, 0.05);
    position: relative;
}

.virtualization-type h4::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 80px;
    height: 2px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
}

.virtualization-type:nth-child(2) h4::after {
    background: linear-gradient(to right, var(--secondary-color), var(--accent-color));
}

.virtualization-type:nth-child(3) h4::after {
    background: linear-gradient(to right, var(--accent-color), var(--primary-color));
}

.virtualization-type h5 {
    color: var(--dark-color);
    margin: 1rem 0 0.5rem;
}


.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.advantage-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.8rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.advantage-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.advantage-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1.2rem;
    box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
    transition: var(--transition);
}

.advantage-card:hover .advantage-icon {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(67, 97, 238, 0.4);
}

.advantage-content {
    text-align: center;
}

.advantage-content h4 {
    color: var(--dark-color);
    margin-bottom: 0.8rem;
    padding-bottom: 0;
}

.advantage-content h4::after {
    display: none;
}


.virtualization-diagram {
    margin-bottom: 2rem;
}

.diagram-container {
    text-align: center;
    margin-bottom: 1.5rem;
    overflow: hidden;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.diagram-container img {
    max-width: 100%;
    transition: transform 0.5s ease;
    display: block;
}

.diagram-container:hover img {
    transform: scale(1.05);
}

.diagram-description {
    background-color: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
}


.info-card {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    margin-bottom: 1.8rem;
    transition: var(--transition);
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.info-card-header {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    padding: 1.2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.info-card-header i {
    font-size: 1.5rem;
}

.info-card-header h4 {
    margin-bottom: 0;
    padding-bottom: 0;
    text-align: left;
}

.info-card-header h4::after {
    display: none;
}

.info-card-content {
    padding: 1.5rem;
}

.info-note {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background-color: rgba(67, 97, 238, 0.08);
    border-radius: var(--border-radius);
    margin-bottom: 1.8rem;
    border-left: 4px solid var(--primary-color);
}

.info-note i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.info-note.warning {
    background-color: rgba(255, 209, 102, 0.2);
    border-left-color: var(--warning-color);
}

.info-note.warning i {
    color: var(--warning-color);
}


.feature-list {
    list-style: none;
}

.feature-list li {
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem 0;
    transition: var(--transition);
}

.feature-list li:hover {
    transform: translateX(5px);
}

.feature-list li i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.numbered-list {
    padding-left: 1.8rem;
}

.numbered-list li {
    margin-bottom: 0.8rem;
    padding: 0.3rem 0;
}


.issue-card {
    display: flex;
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.8rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border-left: 4px solid var(--danger-color);
}

.issue-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.issue-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--danger-color), var(--accent-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-right: 1.5rem;
    flex-shrink: 0;
    box-shadow: 0 5px 15px rgba(239, 71, 111, 0.3);
}

.issue-content h4 {
    color: var(--dark-color);
    margin-bottom: 0.8rem;
    text-align: left;
    padding-bottom: 0;
}

.issue-content h4::after {
    display: none;
}


.timeline {
    position: relative;
    padding: 1.5rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    height: 100%;
    width: 3px;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
    border-radius: 3px;
}

.timeline-item {
    display: flex;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-date {
    width: 70px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 1.8rem;
    z-index: 1;
    box-shadow: 0 3px 10px rgba(67, 97, 238, 0.3);
    transition: var(--transition);
}

.timeline-item:hover .timeline-date {
    transform: scale(1.1);
    box-shadow: 0 5px 15px rgba(67, 97, 238, 0.4);
}

.timeline-content {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    flex-grow: 1;
    transition: var(--transition);
}

.timeline-item:hover .timeline-content {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.timeline-content h5 {
    color: var(--dark-color);
    margin-bottom: 0.8rem;
}


.maintenance-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.maintenance-step {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.8rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.maintenance-step:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.step-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(1350,0,0.1);
}

.step-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--success-color), var(--primary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1.2rem;
    box-shadow: 0 5px 15px rgba(6, 214, 160, 0.3);
    transition: var(--transition);
}

.maintenance-step:hover .step-icon {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(6, 214, 160, 0.4);
}

.step-content {
    text-align: center;
}

.step-content h5 {
    color: var(--dark-color);
    margin-bottom: 0.8rem;
}


.fs-objects {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.8rem;
}

.fs-object {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.8rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    display: flex;
    align-items: flex-start;
}

.fs-object:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.object-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-right: 1.5rem;
    flex-shrink: 0;
    box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
}

.fs-object:nth-child(2) .object-icon {
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
}

.fs-object:nth-child(3) .object-icon {
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
}

.fs-object:nth-child(4) .object-icon {
    background: linear-gradient(135deg, var(--success-color), var(--primary-color));
}

.object-content h4 {
    color: var(--dark-color);
    margin-bottom: 0.8rem;
    text-align: left;
    padding-bottom: 0;
}

.object-content h4::after {
    display: none;
}


.fs-structures {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.8rem;
}

.fs-structure {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.8rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.fs-structure:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.fs-structure h5 {
    color: var(--dark-color);
    margin-bottom: 1.2rem;
    text-align: center;
    position: relative;
    padding-bottom: 0.8rem;
}

.fs-structure h5::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    border-radius: 3px;
}

.structure-image {
    text-align: center;
    margin-bottom: 1.2rem;
    overflow: hidden;
    border-radius: var(--border-radius);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.structure-image img {
    max-width: 100%;
    transition: transform 0.5s ease;
    display: block;
}

.structure-image:hover img {
    transform: scale(1.05);
}


.file-types-table {
    width: 100%;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
}

.table-row {
    display: flex;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.table-row:hover {
    background-color: rgba(67, 97, 238, 0.05);
}

.table-row:last-child {
    border-bottom: none;
}

.table-row.header {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    font-weight: 500;
}

.table-row.header:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.table-cell {
    padding: 1rem;
    flex: 1;
}


.task-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.8rem;
    margin-bottom: 1.8rem;
}

.task-step {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.8rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.task-step:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.task-step h5 {
    color: var(--dark-color);
    margin-bottom: 1.2rem;
    border-bottom: 2px solid rgba(0, 0, 0, 0.05);
    padding-bottom: 0.8rem;
    position: relative;
}

.task-step h5::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 80px;
    height: 2px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
}


.calculator-tasks {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.8rem;
    margin-bottom: 1.8rem;
}

.calculator-task {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.8rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.calculator-task:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}


.task-form {
    background-color: rgba(67, 97, 238, 0.05);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-top: 1.5rem;
    border-left: 4px solid var(--primary-color);
}

.task-form h5 {
    margin-bottom: 1.2rem;
    color: var(--dark-color);
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.6rem;
    font-weight: 500;
    color: var(--dark-color);
}

.form-input, .form-textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-input:focus, .form-textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
    outline: none;
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.task-submit-btn, .report-btn {
    padding: 0.8rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    display: inline-block;
    text-align: center;
    box-shadow: 0 3px 10px rgba(67, 97, 238, 0.3);
}

.task-submit-btn:hover, .report-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(67, 97, 238, 0.4);
}

.task-submit-btn:active, .report-btn:active {
    transform: translateY(0);
}


.report-template {
    background-color: rgba(67, 97, 238, 0.05);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    border-left: 4px solid var(--primary-color);
}

.report-template p {
    margin-bottom: 0.8rem;
}


.navigation-controls {
    display: flex;
    justify-content: space-between;
    max-width: 1400px;
    margin: 1.8rem auto;
    padding: 0 2rem;
}

.nav-btn {
    padding: 1rem 1.8rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-weight: 500;
    box-shadow: 0 3px 10px rgba(67, 97, 238, 0.3);
}

.nav-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(67, 97, 238, 0.4);
}

.nav-btn:active {
    transform: translateY(0);
}


footer {
    background: linear-gradient(135deg, var(--dark-color), var(--secondary-color));
    color: white;
    padding: 2rem 0;
    margin-top: auto;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    transition: var(--transition);
    opacity: 0.8;
}

.footer-links a:hover {
    color: white;
    opacity: 1;
    transform: translateY(-3px);
}


@media (max-width: 768px) {
    .tab-buttons {
        flex-wrap: wrap;
    }

    .tab-btn {
        flex: 1 0 calc(50% - 1rem);
        justify-content: center;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }

    .navigation-controls {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-btn {
        width: 100%;
        justify-content: center;
    }
}


@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.pulse {
    animation: pulse 2s infinite;
}


.responsive-img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
}

.image-container {
    margin-bottom: 1.8rem;
}

.image-caption {
    text-align: center;
    font-size: 0.95rem;
    color: var(--text-light);
    margin-top: 0.8rem;
}