:root {
    /* Cores principais baseadas na USP */
    --azul-usp: #003366;
    --azul-claro: #0066cc;
    --verde-saude: #28a745;
    --verde-claro: #e8f5e9;
    --cinza-claro: #f8f9fa;
    --cinza-medio: #6c757d;
    --cinza-escuro: #343a40;
    --branco: #ffffff;
    --amarelo-destaque: #ffc107;
    --vermelho-destaque: #dc3545;

    /* Fontes */
    --fonte-principal: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --fonte-titulo: 'Georgia', serif;

    /* Espaçamentos */
    --espacamento-xs: 0.5rem;
    --espacamento-sm: 1rem;
    --espacamento-md: 1.5rem;
    --espacamento-lg: 2rem;
    --espacamento-xl: 3rem;

    /* Sombras */
    --sombra-leve: 0 2px 4px rgba(0,0,0,0.1);
    --sombra-media: 0 4px 6px rgba(0,0,0,0.1);
    --sombra-forte: 0 8px 25px rgba(0,0,0,0.15);

    /* Transições */
    --transicao-rapida: 0.2s ease;
    --transicao-normal: 0.3s ease;
    --transicao-lenta: 0.5s ease;
}

/* Reset e Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--fonte-principal);
    line-height: 1.6;
    color: var(--cinza-escuro);
    background-color: var(--cinza-claro);
    overflow-x: hidden;
}

/* Container principal */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.main-header {
    background: linear-gradient(135deg, var(--azul-usp) 0%, var(--azul-claro) 100%);
    color: var(--branco);
    padding: var(--espacamento-lg);
    box-shadow: var(--sombra-forte);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--espacamento-md);
}

.logo-usp {
    background: var(--branco);
    color: var(--azul-usp);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    box-shadow: var(--sombra-media);
}

.title-section h1 {
    font-size: 1.8rem;
    font-weight: bold;
    margin-bottom: 0.25rem;
    font-family: var(--fonte-titulo);
}

.title-section p {
    opacity: 0.9;
    font-size: 1rem;
}

.sync-section {
    display: flex;
    align-items: center;
    gap: var(--espacamento-sm);
    font-size: 0.9rem;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--verde-saude);
    animation: pulse 2s infinite;
}

.status-indicator.offline {
    background: var(--vermelho-destaque);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Dashboard */
.dashboard {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--espacamento-xl);
    display: flex;
    flex-direction: column;
    gap: var(--espacamento-xl);
}

/* Cards de Estatísticas */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--espacamento-lg);
}

.stat-card {
    background: var(--branco);
    border-radius: 15px;
    padding: var(--espacamento-lg);
    box-shadow: var(--sombra-media);
    display: flex;
    align-items: center;
    gap: var(--espacamento-md);
    transition: var(--transicao-normal);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--azul-usp);
}

.stat-card--success::before {
    background: var(--verde-saude);
}

.stat-card--warning::before {
    background: var(--amarelo-destaque);
}

.stat-card--info::before {
    background: var(--azul-claro);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--sombra-forte);
}

.stat-icon {
    font-size: 2.5rem;
    opacity: 0.8;
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 2.2rem;
    font-weight: bold;
    color: var(--azul-usp);
    margin-bottom: 0.25rem;
    line-height: 1;
    font-family: var(--fonte-titulo);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--cinza-medio);
    font-weight: 600;
}

/* Progresso */
.progress-section {
    background: var(--branco);
    border-radius: 15px;
    padding: var(--espacamento-lg);
    box-shadow: var(--sombra-media);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--espacamento-md);
}

.progress-header h3 {
    font-size: 1.3rem;
    color: var(--azul-usp);
    font-family: var(--fonte-titulo);
}

.progress-text {
    font-size: 0.9rem;
    color: var(--cinza-medio);
    font-weight: 600;
}

.progress-bar {
    width: 100%;
    height: 20px;
    background: var(--cinza-claro);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--verde-saude), var(--azul-claro));
    border-radius: 10px;
    transition: width var(--transicao-lenta);
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Gráficos e Estatísticas */
.chart-section,
.turmas-section,
.health-indicators {
    background: var(--branco);
    border-radius: 15px;
    padding: var(--espacamento-lg);
    box-shadow: var(--sombra-media);
}

.chart-section h3,
.turmas-section h3,
.health-indicators h3 {
    font-size: 1.3rem;
    color: var(--azul-usp);
    margin-bottom: var(--espacamento-lg);
    font-family: var(--fonte-titulo);
}

.escola-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--espacamento-md);
}

.escola-stat {
    text-align: center;
    padding: var(--espacamento-md);
    background: var(--verde-claro);
    border-radius: 10px;
    transition: var(--transicao-normal);
}

.escola-stat:hover {
    transform: scale(1.05);
    box-shadow: var(--sombra-leve);
}

.escola-name {
    font-size: 0.9rem;
    color: var(--cinza-escuro);
    margin-bottom: var(--espacamento-xs);
    font-weight: 600;
}

.escola-count {
    font-size: 2rem;
    font-weight: bold;
    color: var(--verde-saude);
    font-family: var(--fonte-titulo);
}

/* Grid de Turmas */
.turmas-grid {
    display: grid;
    grid-template-columns: auto repeat(5, 1fr);
    gap: var(--espacamento-xs);
    max-width: 600px;
}

.turma-header {
    background: var(--azul-usp);
    color: var(--branco);
    padding: var(--espacamento-sm);
    text-align: center;
    font-weight: bold;
    border-radius: 5px;
    font-size: 0.9rem;
}

.turma-cell {
    background: var(--branco);
    border: 2px solid var(--cinza-claro);
    padding: var(--espacamento-sm);
    text-align: center;
    border-radius: 5px;
    font-weight: bold;
    color: var(--cinza-medio);
    transition: var(--transicao-rapida);
    cursor: pointer;
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.turma-cell:hover {
    border-color: var(--azul-usp);
    background: var(--verde-claro);
}

.turma-cell.has-data {
    background: var(--verde-saude);
    color: var(--branco);
    border-color: var(--verde-saude);
}

.turma-ano-label {
    background: var(--verde-saude);
    color: var(--branco);
    padding: var(--espacamento-sm);
    text-align: center;
    font-weight: bold;
    border-radius: 5px;
    font-size: 0.9rem;
}

/* Indicadores de Saúde */
.indicators-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--espacamento-lg);
}

.indicator {
    text-align: center;
    padding: var(--espacamento-md);
    background: var(--verde-claro);
    border-radius: 10px;
    border: 2px solid var(--verde-saude);
    transition: var(--transicao-normal);
}

.indicator:hover {
    transform: translateY(-3px);
    box-shadow: var(--sombra-leve);
}

.indicator-value {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--verde-saude);
    margin-bottom: 0.25rem;
    font-family: var(--fonte-titulo);
}

.indicator-label {
    font-size: 0.9rem;
    color: var(--cinza-escuro);
    font-weight: 600;
}

/* Botões de Ação */
.action-buttons {
    display: flex;
    justify-content: center;
    gap: var(--espacamento-lg);
    flex-wrap: wrap;
}

/* Botões */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--espacamento-xs);
    padding: var(--espacamento-sm) var(--espacamento-lg);
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transicao-normal);
    min-height: 50px;
    white-space: nowrap;
    box-shadow: var(--sombra-leve);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.btn--large {
    padding: var(--espacamento-md) var(--espacamento-xl);
    font-size: 1.1rem;
    min-height: 60px;
}

.btn--primary {
    background: linear-gradient(135deg, var(--azul-usp), var(--azul-claro));
    color: var(--branco);
}

.btn--primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--sombra-forte);
}

.btn--secondary {
    background: linear-gradient(135deg, var(--verde-saude), var(--azul-claro));
    color: var(--branco);
}

.btn--secondary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--sombra-forte);
}

.btn--outline {
    background: var(--branco);
    color: var(--azul-usp);
    border: 2px solid var(--azul-usp);
}

.btn--outline:hover:not(:disabled) {
    background: var(--azul-usp);
    color: var(--branco);
    transform: translateY(-2px);
}

.btn-icon {
    font-size: 1.2rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    animation: fadeIn var(--transicao-normal);
    overflow-y: auto;
    padding: var(--espacamento-md);
}

.modal.show {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: var(--espacamento-xl);
}

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

.modal-content {
    background: var(--branco);
    border-radius: 15px;
    box-shadow: var(--sombra-forte);
    width: 100%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp var(--transicao-normal);
}

.modal-large {
    max-width: 1000px;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--espacamento-lg) var(--espacamento-xl);
    border-bottom: 2px solid var(--cinza-claro);
    background: var(--verde-claro);
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--azul-usp);
    font-family: var(--fonte-titulo);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--cinza-medio);
    cursor: pointer;
    padding: var(--espacamento-xs);
    border-radius: 50%;
    transition: var(--transicao-rapida);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: var(--cinza-claro);
    color: var(--azul-usp);
}

/* Formulário */
.evaluation-form {
    padding: var(--espacamento-xl);
}

.form-section {
    margin-bottom: var(--espacamento-xl);
}

.form-section h3 {
    font-size: 1.3rem;
    color: var(--azul-usp);
    margin-bottom: var(--espacamento-lg);
    padding-bottom: var(--espacamento-sm);
    border-bottom: 2px solid var(--azul-usp);
    font-family: var(--fonte-titulo);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--espacamento-md);
    margin-bottom: var(--espacamento-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-label {
    font-weight: 600;
    margin-bottom: var(--espacamento-xs);
    color: var(--azul-usp);
    font-size: 0.9rem;
}

.form-control {
    padding: var(--espacamento-sm);
    border: 2px solid var(--cinza-claro);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transicao-rapida);
    background: var(--branco);
    color: var(--cinza-escuro);
}

.form-control:focus {
    outline: none;
    border-color: var(--verde-saude);
    box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.1);
}

.form-control:invalid {
    border-color: var(--vermelho-destaque);
}

.form-control[readonly] {
    background: var(--verde-claro);
    color: var(--cinza-escuro);
    cursor: not-allowed;
    font-weight: 600;
}

.form-control.calculated {
    background: linear-gradient(135deg, var(--verde-claro), #cce5ff);
    border-color: var(--verde-saude);
    font-weight: bold;
    color: var(--azul-usp);
}

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

/* Radio Groups */
.radio-group {
    display: flex;
    gap: var(--espacamento-md);
    margin-top: var(--espacamento-xs);
}

.radio-label {
    display: flex;
    align-items: center;
    gap: var(--espacamento-xs);
    cursor: pointer;
    font-weight: 600;
    color: var(--cinza-escuro);
    padding: var(--espacamento-xs) var(--espacamento-sm);
    border-radius: 5px;
    transition: var(--transicao-rapida);
}

.radio-label:hover {
    background: var(--verde-claro);
}

.radio-label input[type="radio"] {
    margin: 0;
    accent-color: var(--verde-saude);
    transform: scale(1.2);
}

/* Ações do Formulário */
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--espacamento-md);
    padding-top: var(--espacamento-lg);
    border-top: 2px solid var(--cinza-claro);
    margin-top: var(--espacamento-xl);
}

/* Prévia da Planilha */
.preview-content {
    padding: var(--espacamento-xl);
}

.preview-info {
    margin-bottom: var(--espacamento-lg);
    text-align: center;
}

.preview-description {
    font-size: 1.1rem;
    color: var(--azul-usp);
    margin-bottom: var(--espacamento-sm);
}

.preview-count {
    font-size: 1rem;
    color: var(--cinza-medio);
    font-weight: 600;
}

.preview-table-container {
    max-height: 400px;
    overflow: auto;
    border: 2px solid var(--cinza-claro);
    border-radius: 10px;
    margin-bottom: var(--espacamento-lg);
}

.preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.preview-table th {
    background: var(--azul-usp);
    color: var(--branco);
    padding: var(--espacamento-sm);
    text-align: left;
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
}

.preview-table td {
    padding: var(--espacamento-sm);
    border-bottom: 1px solid var(--cinza-claro);
    color: var(--cinza-escuro);
}

.preview-table tr:nth-child(even) {
    background: var(--verde-claro);
}

.preview-table tr:hover {
    background: rgba(40, 167, 69, 0.1);
}

.preview-actions {
    display: flex;
    justify-content: center;
    gap: var(--espacamento-lg);
}

/* Alertas */
.alerts-container {
    position: fixed;
    top: 100px;
    right: var(--espacamento-lg);
    z-index: 1100;
    max-width: 400px;
}

.alert {
    padding: var(--espacamento-md);
    border-radius: 10px;
    margin-bottom: var(--espacamento-sm);
    box-shadow: var(--sombra-forte);
    animation: slideInRight var(--transicao-normal);
    border-left: 4px solid;
    background: var(--branco);
    font-weight: 600;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.alert--success {
    border-color: var(--verde-saude);
    color: var(--verde-saude);
    background: var(--verde-claro);
}

.alert--error {
    border-color: var(--vermelho-destaque);
    color: var(--vermelho-destaque);
    background: #f8d7da;
}

.alert--warning {
    border-color: var(--amarelo-destaque);
    color: #856404;
    background: #fff3cd;
}

.alert--info {
    border-color: var(--azul-claro);
    color: var(--azul-usp);
    background: #cce5ff;
}

/* Responsividade */
@media (max-width: 768px) {
    .dashboard {
        padding: var(--espacamento-md);
        gap: var(--espacamento-lg);
    }

    .main-header {
        padding: var(--espacamento-md);
    }

    .header-content {
        flex-direction: column;
        gap: var(--espacamento-sm);
        text-align: center;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .escola-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .action-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .preview-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .turmas-grid {
        font-size: 0.8rem;
        gap: 2px;
    }

    .indicators-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .modal {
        padding: var(--espacamento-xs);
    }

    .modal-content {
        margin: 0;
    }

    .evaluation-form {
        padding: var(--espacamento-md);
    }

    .preview-content {
        padding: var(--espacamento-md);
    }

    .preview-table-container {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .title-section h1 {
        font-size: 1.4rem;
    }

    .stat-value {
        font-size: 1.8rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .escola-stats {
        grid-template-columns: 1fr;
    }

    .turmas-grid {
        font-size: 0.7rem;
        gap: 1px;
    }

    .turma-cell, .turma-header, .turma-ano-label {
        padding: var(--espacamento-xs);
        min-height: 35px;
    }

    .indicators-grid {
        grid-template-columns: 1fr;
    }

    .preview-table {
        font-size: 0.7rem;
    }

    .preview-table th,
    .preview-table td {
        padding: var(--espacamento-xs);
    }
}

/* Utilitários */
.hidden {
    display: none !important;
}

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

.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Loading spinner */
.loading-spinner {
    display: inline-block;
    width: 30px;
    height: 30px;
    border: 3px solid var(--cinza-claro);
    border-radius: 50%;
    border-top-color: var(--verde-saude);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Melhorias de acessibilidade */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles for better accessibility */
.btn:focus,
.form-control:focus,
.modal-close:focus {
    outline: 3px solid var(--amarelo-destaque);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .main-header,
    .action-buttons,
    .modal {
        display: none;
    }

    .dashboard {
        padding: 0;
    }

    .stat-card,
    .progress-section,
    .chart-section,
    .turmas-section,
    .health-indicators {
        box-shadow: none;
        border: 1px solid var(--cinza-claro);
        break-inside: avoid;
        margin-bottom: var(--espacamento-md);
    }
}