:root {
    /* Cores principais */
    --primary-bg: #0f172a;
    --secondary-bg: #1e293b;
    --accent-color: #3b82f6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --border-color: #334155;

    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-card: linear-gradient(145deg, #1e293b 0%, #334155 100%);

    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transições */
    --transition-fast: all 0.15s ease-in-out;
    --transition-normal: all 0.3s ease-in-out;
    --transition-slow: all 0.5s ease-in-out;

    /* Bordas */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
}

* {
    box-sizing: border-box;
}

body {
    background: var(--primary-bg);
    width: 100%;
    max-width: 100vw;
    text-align: center;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    margin: 0;
    padding: 0;
    color: var(--text-primary);
    line-height: 1.6;
}

/* Header e título */
.title {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    font-size: 3.5rem;
    font-weight: 800;
    margin: 2rem 0 1rem;
    text-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
}

.title.completed {
    background: var(--gradient-success);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Nome da Universidade */
.university-name {
    text-align: center;
    margin: 1rem 0 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.university-text {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.1em;
    text-shadow: var(--shadow-md);
}

.university-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.8;
}



/* Seção de Boas-vindas */
.welcome-section {
    margin: 2rem auto;
    max-width: 900px;
    padding: 0 1rem;
}

.welcome-card {
    background: var(--gradient-card);
    border-radius: var(--border-radius-lg);
    padding: 3rem 2rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    text-align: center;
    position: relative;
    overflow: hidden;
    animation: fadeIn 0.8s ease-out;
}

.welcome-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.welcome-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    margin-bottom: 1.5rem;
    color: white;
    box-shadow: var(--shadow-lg);
}

.welcome-title {
    color: var(--text-primary);
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.welcome-description strong {
    color: var(--accent-color);
    font-weight: 600;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.feature-item {
    background: var(--primary-bg);
    border-radius: var(--border-radius-md);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
    text-align: left;
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-md);
    color: white;
    margin-bottom: 1rem;
    flex-shrink: 0;
}

.feature-text h4 {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
}

.feature-text p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

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

.welcome-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0.05;
}

.cta-text {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 500;
    margin: 0;
    position: relative;
    z-index: 1;
}

/* Container do seletor de curso integrado */
.course-selector-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 2rem 0;
    padding: 0 1rem;
}

.course-selector-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
    max-width: 400px;
    justify-content: center;
}

/* Botão Home */
.home-button {
    background: var(--gradient-card);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 0.875rem;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.home-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-normal);
    z-index: -1;
}

.home-button:hover {
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--accent-color);
}

.home-button:hover::before {
    opacity: 0.1;
}

.home-button:active {
    transform: translateY(0);
}

/* Select Customizado */
.custom-select {
    position: relative;
    min-width: 300px;
    max-width: 400px;
}

.select-trigger {
    background: var(--gradient-card);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding-left: 1rem;
    padding-right: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    min-height: 3.5rem;
}

.select-trigger::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-normal);
    z-index: -1;
}

.select-trigger:hover {
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.select-trigger:hover::before {
    opacity: 0.1;
}

.select-trigger.active {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.select-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
}

.select-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 400;
    opacity: 0.8;
}

.selected-course-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    width: 100%;
    text-align: center;
}

.selected-course-info .course-name {
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1.3;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.selected-course-info .course-subtitle {
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.7;
}

/* Animações para transição suave */
.selected-course-info {
    opacity: 0;
    transform: translateY(-10px);
    transition: var(--transition-normal);
}

.select-icon {
    color: var(--text-secondary);
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.select-trigger.active .select-icon {
    transform: rotate(180deg);
    color: var(--accent-color);
}

.select-options {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--secondary-bg);
    border: 2px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    max-height: 400px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-normal);
    overflow: hidden;
}

.select-options.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.search-container {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.course-search {
    width: 100%;
    background: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.course-search:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.course-search::placeholder {
    color: var(--text-secondary);
}

.search-icon {
    position: absolute;
    right: 1.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
}

.options-list {
    max-height: 300px;
    overflow-y: auto;
}

.select-option {
    padding: 0.875rem 1rem;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition-fast);
    border-bottom: 1px solid rgba(51, 65, 85, 0.3);
    display: flex;
    align-items: center;
    position: relative;
}

.select-option:last-child {
    border-bottom: none;
}

.select-option:hover {
    background: var(--primary-bg);
    color: var(--accent-color);
    transform: translateX(4px);
}

.select-option.selected {
    background: var(--accent-color);
    color: white;
    font-weight: 600;
}

.select-option.selected::after {
    content: '✓';
    position: absolute;
    right: 1rem;
    font-weight: bold;
}

.select-option.focused {
    background: var(--primary-bg);
    color: var(--accent-color);
    outline: 2px solid var(--accent-color);
    outline-offset: -2px;
}

.select-option.hidden {
    display: none;
}

/* Animação para lista vazia */
.no-results {
    padding: 2rem 1rem;
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
}

/* Select original escondido */
select {
    display: none !important;
}

/* Indicadores de progresso */
.progress-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 2rem 0;
    flex-wrap: nowrap;
    overflow-x: auto;
}

.progress-card {
    background: var(--gradient-card);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 140px;
    flex-shrink: 0;
    transition: var(--transition-normal);
    text-align: center;
}

.progress-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.progress-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-color);
    margin: 0;
}

.progress-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0.5rem 0 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Grid principal */
.container-grid {
    display: flex;
    justify-content: center;
    width: 100%;
    padding: 0 1rem;
}

.grid {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 1200px;
    gap: 2rem;
}

/* Título do Semestre */
.semester-title {
    background: var(--gradient-card);
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    position: relative;
    border: 1px solid var(--border-color);
    border-bottom: none;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Div das Disciplinas */
.semester {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--gradient-card);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-top: none;
    flex-wrap: wrap;
}

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

/* Nós das disciplinas */
.node {
    width: 120px;
    height: 80px;
    flex-shrink: 0;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    z-index: 1;
    background: var(--gradient-card);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.node::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-normal);
    z-index: -1;
}

.node:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-color);
}

.node:hover::before {
    opacity: 0.1;
}

.node[status="concluida"] {
    border-color: var(--success-color);
    background: var(--gradient-success);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.node[status="concluida"]:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.5);
}

.node[status="concluida"]>p {
    color: white;
    font-weight: 600;
}

.node>p {
    color: var(--text-primary);
    text-align: center;
    margin: 0;
    padding: 1rem 0.5rem;
    font-size: 0.8rem;
    font-weight: 500;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1.3;
}

/* Tooltip */
.tooltip {
    position: absolute;
    background: var(--secondary-bg);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
    font-size: 0.85rem;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    max-width: 250px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
    pointer-events: none;
    border: 1px solid var(--border-color);
}

.tooltip.show {
    opacity: 1;
    visibility: visible;
}

/* Container de conteúdo */
.container-content {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 1rem;
}

.container-content>h3 {
    margin: 2rem 0 1rem;
    color: var(--text-primary);
    text-align: center;
    font-size: 1.8rem;
    font-weight: 600;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.container-content>p {
    width: 100%;
    max-width: 800px;
    color: var(--text-secondary);
    text-align: justify;
    text-indent: 2rem;
    font-size: 0.8rem;
    line-height: 1.7;
}

/* Links */
a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition-normal);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-md);
    display: inline-block;
    margin: 0.5rem;
}

a:hover {
    color: var(--text-primary);
    background: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Canvas das conexões */
canvas {
    border: none;
    position: relative;
    z-index: 0;
    pointer-events: none;
    opacity: 0.8;
}

/* Melhora a visibilidade das conexões */
.node canvas {
    filter: drop-shadow(0 0 2px rgba(59, 130, 246, 0.3));
}

/* Conexões concluídas */
.node[status="concluida"] canvas {
    filter: drop-shadow(0 0 4px rgba(16, 185, 129, 0.5));
}

/* Responsividade */
@media screen and (max-width: 768px) {
    .title {
        font-size: 2.5rem;
        margin: 1rem 0;
    }

    .university-text {
        font-size: 2rem;
    }

    .university-subtitle {
        font-size: 0.8rem;
    }

    .course-selector-container {
        margin: 1rem;
        padding: 0 0.5rem;
    }

    .course-selector-header {
        max-width: 100%;
        gap: 0.75rem;
    }

    .home-button {
        padding: 0.75rem;
    }

    .selected-course-info .course-name {
        font-size: 1.1rem;
    }

    .welcome-card {
        padding: 2rem 1.5rem;
    }

    .welcome-title {
        font-size: 1.8rem;
    }

    .welcome-description {
        font-size: 1rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .feature-item {
        padding: 1rem;
    }

    .custom-select {
        min-width: 280px;
        max-width: 100%;
    }

    .select-options {
        max-height: 300px;
    }

    .options-list {
        max-height: 250px;
    }

    .progress-container {
        gap: 0.75rem;
        margin: 1.5rem 0;
    }

    .progress-card {
        min-width: 120px;
        padding: 0.75rem 1rem;
    }

    .progress-number {
        font-size: 1.5rem;
    }

    .progress-label {
        font-size: 0.8rem;
    }

    .semester-title {
        font-size: 1rem;
    }

    .semester {
        padding: 1rem;
        gap: 1rem;
    }

    .node {
        width: 100px;
        height: 70px;
    }

    .node>p {
        font-size: 0.7rem;
        padding: 0.5rem 0.25rem;
    }

    .container-content>h3 {
        font-size: 1.5rem;
    }

    .container-content>p {
        font-size: 0.9rem;
        text-indent: 1.5rem;
    }

    /* Footer Responsive - Tablet */
    .footer-content {
        /* padding: 2.5rem 1rem 1.5rem; */
    }

    .contact-links {
        gap: 1rem;
    }

    .contact-links a {
        width: 55px;
        height: 55px;
        /* padding: 0.875rem; */
    }



    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }
}

@media screen and (max-width: 480px) {
    .title {
        font-size: 2rem;
    }

    .university-text {
        font-size: 1.6rem;
    }

    .university-subtitle {
        font-size: 0.75rem;
    }

    .course-selector-container {
        margin: 0.5rem;
        padding: 0 0.25rem;
    }

    .course-selector-header {
        gap: 0.5rem;
    }

    .home-button {
        padding: 0.625rem;
    }

    .selected-course-info .course-name {
        font-size: 1rem;
    }

    .welcome-card {
        padding: 1.5rem 1rem;
        margin: 0.5rem;
    }

    .welcome-icon {
        width: 60px;
        height: 60px;
    }

    .welcome-title {
        font-size: 1.5rem;
    }

    .welcome-description {
        font-size: 0.95rem;
    }

    .feature-icon {
        width: 40px;
        height: 40px;
    }

    .feature-text h4 {
        font-size: 1rem;
    }

    .feature-text p {
        font-size: 0.85rem;
    }

    .cta-text {
        font-size: 1rem;
    }

    .semester-title {
        font-size: 0.8rem;
    }

    .semester {
        padding: 0.75rem;
        gap: 0.75rem;
    }

    .custom-select {
        min-width: 250px;
    }

    .select-trigger {
        font-size: 1rem;
    }

    .select-text {
        font-size: 1rem;
    }

    .search-container {
        padding: 0.75rem;
    }

    .course-search {
        padding: 0.625rem 2rem 0.625rem 0.75rem;
        font-size: 0.9rem;
    }

    .select-option {
        padding: 0.75rem;
        font-size: 0.95rem;
    }

    .node {
        width: 80px;
        height: 60px;
    }

    .node>p {
        font-size: 0.6rem;
        padding: 0.25rem;
    }

    .progress-container {
        gap: 0.5rem;
        margin: 1rem 0;
    }

    .progress-card {
        min-width: 90px;
        padding: 0.5rem 0.75rem;
    }

    .progress-number {
        font-size: 1.25rem;
    }

    .progress-label {
        font-size: 0.7rem;
        margin: 0.25rem 0 0;
    }

    /* Footer Responsive - Mobile */
    .footer {
        margin-top: 2rem;
    }

    .footer-content {
        /* padding: 2rem 1rem 1rem; */
    }

    .footer-section h4 {
        font-size: 1.1rem;
        /* margin-bottom: 1rem; */
    }

    .contact-links {
        gap: 0.75rem;
    }

    .contact-links a {
        width: 50px;
        height: 50px;
        padding: 0.75rem;
    }



    .occam-quote {
        padding: 1.25rem;
    }

    .occam-quote p {
        font-size: 0.85rem;
    }

    .quote-author {
        font-size: 0.75rem;
    }

    .footer-bottom {
        padding: 1rem;
    }

    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }

    .footer-bottom p {
        font-size: 0.8rem;
    }
}

/* Responsividade para dispositivos móveis em portrait */
@media screen and (max-width: 480px) and (orientation: portrait) {
    .progress-container {
        gap: 0.25rem;
        margin: 0.75rem 0;
    }

    .progress-card {
        min-width: 70px;
        padding: 0.4rem 0.5rem;
    }

    .progress-number {
        font-size: 1rem;
    }

    .progress-label {
        font-size: 0.6rem;
        margin: 0.2rem 0 0;
        line-height: 1.2;
    }
}

/* Rodapé */
.footer {
    background: var(--secondary-bg);
    border-top: 1px solid var(--border-color);
    margin-top: 1rem;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.footer-section h4 {
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 600;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Contact Links */
.contact-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.contact-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-normal);
    padding: 1rem;
    background: var(--gradient-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    width: 60px;
    height: 60px;
}

.contact-links a:hover {
    color: var(--accent-color);
    transform: translateY(-3px) scale(1.1);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.contact-links svg {
    color: var(--accent-color);
    flex-shrink: 0;
}



/* Footer Bottom */
.footer-bottom {
    background: var(--primary-bg);
    border-top: 1px solid var(--border-color);
    padding: 0.75rem 0.5rem;
}

.footer-bottom-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    gap: 0.5rem;
}

.footer-bottom p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.footer-tech {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.tech-stack {
    color: var(--accent-color);
    font-weight: 500;
}

/* Animações */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--secondary-bg);
    border-radius: 4px;
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--success-color);
}

/* Modal de Aviso */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    padding: 1rem;
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--secondary-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 100%;
    transform: scale(0.9) translateY(20px);
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.modal-overlay.show .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    background: var(--gradient-primary);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
}

.modal-icon {
    color: white;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.modal-title {
    color: white;
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    flex: 1;
}

.modal-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.modal-body {
    padding: 2rem 1.5rem 1.5rem;
}

.modal-message {
    color: var(--text-secondary);
    margin: 0 0 1.5rem;
    font-size: 1rem;
    line-height: 1.6;
    text-align: center;
}

.prerequisites-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.prerequisite-item {
    background: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: var(--transition-fast);
}

.prerequisite-item:hover {
    border-color: var(--accent-color);
    transform: translateX(4px);
}

.prerequisite-icon {
    color: var(--warning-color);
    flex-shrink: 0;
}

.prerequisite-text {
    color: var(--text-primary);
    font-weight: 500;
    margin: 0;
}

.modal-footer {
    padding: 1rem 1.5rem 1.5rem;
    display: flex;
    justify-content: center;
}

/* Botões */
.btn {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: var(--border-radius-md);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
    min-width: 120px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

/* Responsividade do Modal */
@media screen and (max-width: 768px) {
    .modal {
        max-width: 90vw;
        margin: 1rem;
    }

    .modal-header {
        padding: 1rem;
    }

    .modal-title {
        font-size: 1.3rem;
    }

    .modal-body {
        padding: 1.5rem 1rem 1rem;
    }

    .modal-footer {
        padding: 1rem 1rem 1.5rem;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
}

@media screen and (max-width: 480px) {
    .modal-header {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }

    .modal-title {
        font-size: 1.2rem;
    }

    .modal-icon {
        width: 40px;
        height: 40px;
    }

    .prerequisite-item {
        padding: 0.75rem;
    }
}

/* Loading Overlay */
.loading-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.loading-content {
    text-align: center;
    color: var(--text-primary);
}

.loading-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
    gap: 0.5rem;
}

.spinner-ring {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-color);
    animation: loadingPulse 1.5s ease-in-out infinite;
}

.spinner-ring:nth-child(1) {
    animation-delay: 0s;
}

.spinner-ring:nth-child(2) {
    animation-delay: 0.3s;
}

.spinner-ring:nth-child(3) {
    animation-delay: 0.6s;
}

@keyframes loadingPulse {

    0%,
    80%,
    100% {
        transform: scale(0.8);
        opacity: 0.5;
    }

    40% {
        transform: scale(1.2);
        opacity: 1;
    }
}

.loading-text {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.loading-subtext {
    font-size: 1rem;
    color: var(--text-secondary);
    opacity: 0.8;
}

/* Responsividade do Loading */
@media screen and (max-width: 768px) {
    .loading-text {
        font-size: 1.3rem;
    }

    .loading-subtext {
        font-size: 0.9rem;
    }

    .spinner-ring {
        width: 10px;
        height: 10px;
    }
}

@media screen and (max-width: 480px) {
    .loading-text {
        font-size: 1.2rem;
    }

    .loading-subtext {
        font-size: 0.85rem;
    }

    .spinner-ring {
        width: 8px;
        height: 8px;
    }
}