/* ============================================
   VARIÁVEIS CSS - TEMAS
   ============================================ */
:root {
    --cor-primaria: #667eea;
    --cor-secundaria: #764ba2;
    --cor-acento: #ff6b35;
    --cor-sucesso: #10b981;
    --cor-alerta: #f59e0b;
    --cor-erro: #ef4444;

    --bg-body: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-hover: #f5f7fa;
    --texto-principal: #1f2937;
    --texto-secundario: #6b7280;
    --borda: #e5e7eb;
    --sombra: 0 20px 60px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] {
    --bg-body: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
    --bg-card: #1f2937;
    --bg-input: #374151;
    --bg-hover: #4b5563;
    --texto-principal: #f9fafb;
    --texto-secundario: #d1d5db;
    --borda: #4b5563;
    --sombra: 0 20px 60px rgba(0, 0, 0, 0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-body);
    min-height: 100vh;
    padding: 1.25rem;
    line-height: 1.6;
    color: var(--texto-principal);
    transition: background 0.3s ease, color 0.3s ease;
}

.pular-conteudo {
    position: absolute;
    top: -40px;
    left: 0;
    background: #000;
    color: #fff;
    padding: 8px 16px;
    text-decoration: none;
    z-index: 10000;
    border-radius: 0 0 4px 0;
    font-weight: 600;
}

.pular-conteudo:focus {
    top: 0;
}

.container {
    max-width: 75rem;
    margin: 0 auto;
}

/* Toast */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: var(--bg-card);
    color: var(--texto-principal);
    padding: 16px 20px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    border-left: 4px solid var(--cor-primaria);
    max-width: 350px;
    animation: slideIn 0.3s ease, fadeOut 0.3s ease 4.7s;
    display: flex;
    align-items: center;
    gap: 12px;
}

.toast.sucesso {
    border-left-color: var(--cor-sucesso);
}

.toast.erro {
    border-left-color: var(--cor-erro);
}

.toast.alerta {
    border-left-color: var(--cor-alerta);
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }

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

@keyframes fadeOut {
    to {
        opacity: 0;
        transform: translateX(400px);
    }
}

/* Toolbar */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-card);
    padding: 12px 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: var(--sombra);
    flex-wrap: wrap;
    gap: 10px;
}

.toolbar-group {
    display: flex;
    gap: 8px;
    align-items: center;
}

.toolbar-btn {
    background: transparent;
    border: 2px solid var(--borda);
    border-radius: 8px;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 1rem;
    min-height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--texto-principal);
    transition: all 0.2s;
}

.toolbar-btn:hover,
.toolbar-btn:focus {
    border-color: var(--cor-primaria);
    background: var(--bg-hover);
    outline: 2px solid var(--cor-primaria);
    outline-offset: 2px;
}

.language-selector {
    position: relative;
}

.language-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-card);
    border: 2px solid var(--borda);
    border-radius: 8px;
    margin-top: 8px;
    box-shadow: var(--sombra);
    z-index: 100;
    min-width: 150px;
}

.lang-option {
    display: block;
    width: 100%;
    padding: 12px 16px;
    border: none;
    background: transparent;
    text-align: left;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--texto-principal);
    min-height: 44px;
}

.lang-option:hover,
.lang-option:focus {
    background: var(--bg-hover);
}

.lang-option:first-child {
    border-radius: 6px 6px 0 0;
}

.lang-option:last-child {
    border-radius: 0 0 6px 6px;
}

/* Header */
.header {
    text-align: center;
    color: #fff;
    margin-bottom: 2rem;
    padding: 1rem;
}

.header h1 {
    font-size: 2.25rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

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

/* Botão Ajuda */
.btn-ajuda {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3.5rem;
    height: 3.5rem;
    min-width: 44px;
    min-height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--cor-primaria) 0%, var(--cor-secundaria) 100%);
    color: #fff;
    border: none;
    font-size: 1.5rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    z-index: 90;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-ajuda:hover,
.btn-ajuda:focus {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    outline: 3px solid #fff;
    outline-offset: 2px;
}

/* Modais */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    align-items: center;
    justify-content: center;
    padding: 1rem;
    backdrop-filter: blur(4px);
}

.modal[aria-hidden="false"] {
    display: flex;
}

.modal-conteudo {
    background: var(--bg-card);
    border-radius: 1rem;
    max-width: 600px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    padding: 2rem;
    box-shadow: var(--sombra);
    animation: modalSlide 0.3s ease;
}

.modal-pequeno {
    max-width: 400px;
}

@keyframes modalSlide {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }

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

.modal-fechar {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    width: 2.5rem;
    height: 2.5rem;
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--texto-secundario);
    transition: background 0.2s;
}

.modal-fechar:hover,
.modal-fechar:focus {
    background: var(--bg-hover);
    outline: 2px solid var(--cor-primaria);
}

.modal-acoes {
    display: flex;
    gap: 12px;
    margin-top: 1.5rem;
    justify-content: flex-end;
}

.btn-confirmar,
.btn-cancelar {
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    min-height: 44px;
    border: none;
    transition: all 0.2s;
}

.btn-confirmar {
    background: var(--cor-erro);
    color: white;
}

.btn-confirmar:hover {
    background: #dc2626;
}

.btn-cancelar {
    background: var(--bg-hover);
    color: var(--texto-principal);
    border: 2px solid var(--borda);
}

.btn-cancelar:hover {
    background: var(--borda);
}

/* Compartilhamento */
.compartilhar-opcoes {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-compartilhar-opcao {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border: 2px solid var(--borda);
    border-radius: 10px;
    background: var(--bg-hover);
    color: var(--texto-principal);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    min-height: 44px;
}

.btn-compartilhar-opcao:hover,
.btn-compartilhar-opcao:focus {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-compartilhar-opcao .compartilhar-icone {
    font-size: 1.4rem;
}

.btn-compartilhar-opcao.whatsapp:hover,
.btn-compartilhar-opcao.whatsapp:focus {
    background: #25d366;
    color: white;
    border-color: #25d366;
}

.btn-compartilhar-opcao.telegram:hover,
.btn-compartilhar-opcao.telegram:focus {
    background: #0088cc;
    color: white;
    border-color: #0088cc;
}

/* Atalhos */
.atalhos-lista {
    display: grid;
    gap: 12px;
}

.atalho-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px;
    background: var(--bg-hover);
    border-radius: 8px;
}

.atalho-item kbd {
    background: var(--bg-card);
    border: 2px solid var(--borda);
    padding: 4px 12px;
    border-radius: 6px;
    font-family: monospace;
    font-weight: 600;
    min-width: 80px;
    text-align: center;
    box-shadow: 0 2px 0 var(--borda);
}

/* Seções */
.calculator-section,
.grafico-section,
.tabela-section,
.explicacao-section,
.ferramentas-section,
.meta-section,
.aporte-slider-section,
.comparador-section {
    background: var(--bg-card);
    border-radius: 1.25rem;
    padding: 2.5rem;
    box-shadow: var(--sombra);
    margin-bottom: 2rem;
}

/* Loader */
.form-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 1.25rem;
    text-align: center;
}

.loader-spinner {
    width: 3rem;
    height: 3rem;
    border: 4px solid var(--borda);
    border-top: 4px solid var(--cor-primaria);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1.25rem;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.loader-text {
    color: var(--texto-secundario);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 1.25rem;
}

.progress-container {
    width: 100%;
    max-width: 18.75rem;
    height: 0.5rem;
    background-color: var(--borda);
    border-radius: 0.625rem;
    overflow: hidden;
    margin-bottom: 0.625rem;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--cor-primaria) 0%, var(--cor-secundaria) 100%);
    width: 0%;
    border-radius: 0.625rem;
    transition: width 0.1s linear;
}

.progress-text {
    color: var(--cor-primaria);
    font-size: 0.875rem;
    font-weight: 600;
}

/* Formulário */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    position: relative;
}

label {
    margin-bottom: 0.5rem;
    color: var(--texto-principal);
    font-weight: 600;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    min-width: 20px;
    min-height: 20px;
    background: var(--cor-acento);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 12px;
    font-weight: 700;
    font-style: italic;
    font-family: Georgia, serif;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
}

.info-icon:hover,
.info-icon:focus {
    transform: scale(1.1);
    outline: 2px solid var(--cor-acento);
    outline-offset: 2px;
}

.tooltip-popover {
    position: absolute;
    top: 30px;
    left: 0;
    z-index: 100;
    margin-top: 8px;
}

.tooltip-conteudo {
    background: #2c3e50;
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.5;
    max-width: 280px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    position: relative;
}

.tooltip-seta {
    position: absolute;
    top: -8px;
    left: 20px;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid #2c3e50;
}

.tooltip-popover:not([hidden]) {
    display: block;
    animation: fadeIn 0.2s ease;
}

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

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

input,
select {
    padding: 0.75rem 1rem;
    border: 2px solid var(--borda);
    border-radius: 0.625rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    min-height: 44px;
    width: 100%;
    background: var(--bg-input);
    color: var(--texto-principal);
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--cor-primaria);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.input-exemplo {
    font-size: 0.75rem;
    color: var(--texto-secundario);
    margin-top: 0.25rem;
    font-style: italic;
}

.form-acoes {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn-calcular {
    flex: 1;
    min-width: 200px;
    padding: 1rem;
    background: linear-gradient(135deg, var(--cor-primaria) 0%, var(--cor-secundaria) 100%);
    color: #fff;
    border: none;
    border-radius: 0.625rem;
    font-size: 1.125rem;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    min-height: 44px;
}

.btn-calcular:hover,
.btn-calcular:focus {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
    outline: 3px solid #fff;
    outline-offset: -3px;
}

.btn-limpar {
    padding: 1rem 1.5rem;
    background: transparent;
    color: var(--cor-erro);
    border: 2px solid var(--cor-erro);
    border-radius: 0.625rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    min-height: 44px;
}

.btn-limpar:hover,
.btn-limpar:focus {
    background: var(--cor-erro);
    color: white;
}

/* Comparador */
.comparador-section {
    margin-top: 2rem;
}

.comparador-section h3 {
    margin-bottom: 1rem;
    color: var(--texto-principal);
}

.comparador-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.cenario-card {
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    border: 2px solid var(--borda);
    transition: transform 0.2s, box-shadow 0.2s;
}

.cenario-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.cenario-card.conservador {
    border-color: #10b981;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, transparent 100%);
}

.cenario-card.moderado {
    border-color: #f59e0b;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, transparent 100%);
}

.cenario-card.agressivo {
    border-color: #ef4444;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, transparent 100%);
}

.cenario-card h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--texto-principal);
}

.cenario-taxa {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--texto-secundario);
    margin-bottom: 0.5rem;
}

.cenario-resultado {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--cor-primaria);
}

/* Cards Resultado */
.resultado-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
    margin-top: 2rem;
}

.card {
    background: linear-gradient(135deg, var(--bg-hover) 0%, transparent 100%);
    padding: 1.5rem;
    border-radius: 0.9375rem;
    text-align: center;
    border: 2px solid var(--borda);
}

.card.destaque {
    border-color: var(--cor-primaria);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, transparent 100%);
    transform: scale(1.05);
}

.card-label {
    color: var(--texto-secundario);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.card-valor {
    color: var(--cor-primaria);
    font-size: 1.75rem;
    font-weight: 700;
}

/* Exportação */
.acoes-exportacao {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 1.5rem;
    justify-content: center;
}

.btn-exportar {
    padding: 10px 20px;
    background: var(--bg-hover);
    border: 2px solid var(--borda);
    border-radius: 8px;
    color: var(--texto-principal);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    min-height: 44px;
}

.btn-exportar:hover,
.btn-exportar:focus {
    background: var(--cor-primaria);
    color: white;
    border-color: var(--cor-primaria);
}

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

.grafico-header h2 {
    color: var(--texto-principal);
    font-size: 1.5rem;
}

.btn-fullscreen {
    background: var(--bg-hover);
    border: 2px solid var(--borda);
    border-radius: 8px;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 1.25rem;
    min-height: 44px;
    min-width: 44px;
    transition: all 0.2s;
}

.btn-fullscreen:hover,
.btn-fullscreen:focus {
    background: var(--cor-primaria);
    color: white;
}

.grafico-container {
    position: relative;
    height: 400px;
    margin-bottom: 2rem;
}

.grafico-container .btn-fullscreen {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 10;
}

.grafico-container.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    background: var(--bg-card);
    padding: 2rem;
}

.grafico-container.fullscreen .btn-fullscreen {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 10000;
}

.grafico-pizza-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid var(--borda);
}

.grafico-pizza-section h3 {
    text-align: center;
    margin-bottom: 1rem;
    color: var(--texto-principal);
}

.grafico-pizza-container {
    max-width: 400px;
    margin: 0 auto;
    height: 300px;
}

/* Tabela */
.tabela-wrapper {
    overflow-x: auto;
    border-radius: 0.625rem;
    border: 1px solid var(--borda);
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

th {
    background: linear-gradient(135deg, var(--cor-primaria) 0%, var(--cor-secundaria) 100%);
    color: #fff;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    white-space: nowrap;
}

td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--borda);
    color: var(--texto-principal);
}

tr:hover {
    background: var(--bg-hover);
}

.btn-carregar-mais {
    display: inline-block;
    width: 100%;
    padding: 0.75rem;
    background: linear-gradient(135deg, var(--cor-primaria) 0%, var(--cor-secundaria) 100%);
    color: #fff;
    border: none;
    border-radius: 0.625rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    margin-top: 1.25rem;
    min-height: 44px;
}

.btn-carregar-mais:hover,
.btn-carregar-mais:focus {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

/* Meta e Slider */
.meta-input-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 400px;
}

.btn-calcular-meta {
    padding: 12px 24px;
    background: var(--cor-sucesso);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    min-height: 44px;
    transition: all 0.2s;
}

.btn-calcular-meta:hover,
.btn-calcular-meta:focus {
    background: #059669;
}

.resultado-meta {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-hover);
    border-radius: 12px;
    border-left: 4px solid var(--cor-sucesso);
}

.slider-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.slider-container label {
    display: block;
    margin-bottom: 1rem;
    font-size: 1rem;
}

input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--borda);
    outline: none;
    -webkit-appearance: none;
    margin: 1rem 0;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--cor-primaria);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.slider-valor {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--cor-primaria);
    margin: 1rem 0;
}

.slider-resultado {
    padding: 1rem;
    background: var(--bg-hover);
    border-radius: 8px;
    margin-top: 1rem;
}

/* Explicação */
.explicacao-section h2 {
    color: var(--cor-primaria);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.explicacao-section p,
.explicacao-section ul {
    color: var(--texto-secundario);
    margin-bottom: 1rem;
}

.explicacao-section ul {
    margin-left: 1.5rem;
}

.formula {
    background: var(--bg-hover);
    padding: 1.25rem;
    border-radius: 0.625rem;
    margin: 1.25rem 0;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--texto-principal);
    border: 2px solid var(--borda);
    font-family: 'Courier New', monospace;
}

/* Ferramentas */
.ferramentas-section h2 {
    color: var(--texto-principal);
    margin-bottom: 1.25rem;
    font-size: 1.5rem;
}

.ferramentas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.ferramenta-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: var(--bg-hover);
    border: 2px solid var(--borda);
    border-radius: 1rem;
    text-decoration: none;
    color: var(--texto-principal);
    transition: all 0.3s;
    min-height: 120px;
    text-align: center;
}

.ferramenta-card:hover,
.ferramenta-card:focus {
    border-color: var(--cor-primaria);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
    outline: 3px solid var(--cor-primaria);
    outline-offset: 2px;
}

.ferramenta-icone {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.ferramenta-nome {
    font-weight: 600;
    font-size: 0.9375rem;
}

/* Anúncios e Footer */
.anuncio-container {
    margin: 2rem 0;
    text-align: center;
}

.footer {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 1rem;
    padding: 2rem;
    margin-top: 2rem;
    text-align: center;
}

[data-theme="dark"] .footer {
    background: rgba(31, 41, 55, 0.95);
}

.footer-links {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--cor-primaria);
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    border-radius: 0.25rem;
    transition: background 0.2s;
}

.footer-links a:hover,
.footer-links a:focus {
    background: rgba(102, 126, 234, 0.1);
    outline: 2px solid var(--cor-primaria);
    outline-offset: 2px;
}

.footer-copy {
    color: var(--texto-secundario);
    font-size: 0.875rem;
}

/* Tutorial */
.tutorial-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.tutorial-overlay[aria-hidden="false"] {
    display: flex;
}

.tutorial-step {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    max-width: 500px;
    text-align: center;
    animation: tutorialSlide 0.5s ease;
}

@keyframes tutorialSlide {
    from {
        transform: scale(0.8);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

.tutorial-step h3 {
    color: var(--cor-primaria);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.tutorial-step p {
    color: var(--texto-secundario);
    margin-bottom: 1.5rem;
}

.tutorial-botoes {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.tutorial-btn {
    padding: 12px 24px;
    background: var(--cor-primaria);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    min-height: 44px;
    transition: all 0.2s;
}

.tutorial-btn.secondary {
    background: transparent;
    color: var(--texto-secundario);
    border: 2px solid var(--borda);
}

.tutorial-btn:hover,
.tutorial-btn:focus {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    outline: 2px solid var(--cor-primaria);
    outline-offset: 2px;
}

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

.hidden {
    display: none !important;
}

/* Responsivo */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

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

    .calculator-section,
    .grafico-section,
    .tabela-section,
    .explicacao-section,
    .ferramentas-section,
    .meta-section,
    .aporte-slider-section,
    .comparador-section {
        padding: 1.5rem;
    }

    .header h1 {
        font-size: 1.75rem;
    }

    .form-acoes {
        flex-direction: column;
    }

    .btn-calcular,
    .btn-limpar {
        width: 100%;
    }

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

    .card.destaque {
        transform: none;
    }

    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }

    .btn-ajuda {
        bottom: 1rem;
        right: 1rem;
        width: 3rem;
        height: 3rem;
    }
}

/* Impressão */
@media print {
    body {
        background: white !important;
        padding: 0;
    }

    .toolbar,
    .btn-ajuda,
    .anuncio-container,
    .btn-limpar,
    .acoes-exportacao,
    .btn-carregar-mais,
    .ferramentas-section,
    .tutorial-overlay,
    .comparador-section,
    .meta-section,
    .aporte-slider-section,
    [vw] {
        display: none !important;
    }

    .calculator-section,
    .grafico-section,
    .tabela-section,
    .explicacao-section {
        box-shadow: none;
        border: 1px solid #ddd;
        break-inside: avoid;
        margin-bottom: 1rem;
        padding: 1rem;
    }

    .card {
        border: 2px solid #ddd;
    }

    th {
        background: #667eea !important;
        color: white !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
}
/* ============================================
   TRAPÉZIO — ESTILOS ADICIONAIS
   ============================================ */

/* Toolbar brand */
.toolbar-brand {
    font-weight: 700;
    font-size: 1rem;
    color: var(--texto-principal);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

/* Seção calculadora H2 */
.calculator-section h2 {
    color: var(--texto-principal);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

/* Explicação layout em grid */
.explicacao-section {
    background: var(--bg-card);
    border-radius: 1.25rem;
    padding: 2.5rem;
    box-shadow: var(--sombra);
    margin-bottom: 2rem;
}

.explicacao-section h2 {
    color: var(--cor-primaria);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.explicacao-section h3 {
    color: var(--texto-principal);
    font-size: 1.1rem;
    margin: 1.25rem 0 0.5rem;
}

.explicacao-section p,
.explicacao-section ul {
    color: var(--texto-secundario);
    margin-bottom: 0.75rem;
    line-height: 1.7;
}

.explicacao-section ul {
    margin-left: 1.5rem;
}

.explicacao-section ul li {
    margin-bottom: 0.25rem;
}

.explicacao-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

@media (max-width: 768px) {
    .explicacao-grid {
        grid-template-columns: 1fr;
    }
}

/* Diagrama SVG */
.diagrama-container {
    background: var(--bg-hover);
    border-radius: 1rem;
    padding: 1rem;
    border: 2px solid var(--borda);
    display: flex;
    align-items: center;
    justify-content: center;
}

.diagrama-container svg {
    width: 100%;
    max-width: 320px;
    height: auto;
}

/* Resultado container */
#resultado-trapezio {
    margin-top: 1rem;
    padding: 1rem 1.25rem;
    border-radius: 0.75rem;
    font-weight: 600;
    display: none;
    animation: fadeIn 0.3s ease;
}

#resultado-trapezio.erro {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    border-left: 4px solid var(--cor-erro);
    color: var(--cor-erro);
}

/* Perguntas FAQ */
.perguntas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.pergunta-item {
    background: var(--bg-hover);
    border-radius: 0.75rem;
    border: 1px solid var(--borda);
    overflow: hidden;
}

.pergunta-item summary {
    padding: 1rem 1.25rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--texto-principal);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 44px;
    transition: background 0.2s;
}

.pergunta-item summary::-webkit-details-marker { display: none; }

.pergunta-item summary::after {
    content: '▸';
    color: var(--cor-primaria);
    transition: transform 0.2s;
    flex-shrink: 0;
    margin-left: 0.5rem;
}

.pergunta-item[open] summary::after {
    transform: rotate(90deg);
}

.pergunta-item summary:hover,
.pergunta-item summary:focus {
    background: var(--borda);
    outline: 2px solid var(--cor-primaria);
    outline-offset: -2px;
}

.pergunta-item p {
    padding: 1rem 1.25rem 1.25rem;
    color: var(--texto-secundario);
    line-height: 1.7;
    margin: 0;
    border-top: 1px solid var(--borda);
}

/* FAQ Modal items */
.faq-modal-item {
    margin-bottom: 0.75rem;
    border: 1px solid var(--borda);
    border-radius: 0.5rem;
    overflow: hidden;
}

.faq-modal-item summary {
    padding: 0.875rem 1rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--texto-principal);
    background: var(--bg-hover);
    list-style: none;
    min-height: 44px;
    display: flex;
    align-items: center;
}

.faq-modal-item summary::-webkit-details-marker { display: none; }

.faq-modal-item > p,
.faq-modal-item > ol,
.faq-modal-item > div {
    padding: 1rem;
    color: var(--texto-secundario);
    line-height: 1.7;
}

.faq-modal-item > ol {
    padding-left: 2rem;
}

.faq-modal-item > ol li {
    margin-bottom: 0.5rem;
}

/* Modal conteudo h2 */
.modal-conteudo h2 {
    font-size: 1.25rem;
    color: var(--cor-primaria);
    margin-bottom: 1.25rem;
    padding-right: 2rem;
}

/* Footer links */
.footer a {
    color: var(--cor-primaria);
    text-decoration: none;
}

.footer a:hover,
.footer a:focus {
    text-decoration: underline;
}

/* Ferramentas section H2 */
.ferramentas-section h2 {
    color: var(--texto-principal);
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
}

/* Dark mode SVG adapt */
[data-theme="dark"] .diagrama-container polygon {
    fill: rgba(102, 126, 234, 0.25);
}

/* Atalhos dentro da modal */
.atalhos-lista {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.atalho-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem 0;
    color: var(--texto-secundario);
}

.atalho-item kbd {
    background: var(--bg-card);
    border: 2px solid var(--borda);
    padding: 4px 12px;
    border-radius: 6px;
    font-family: monospace;
    font-weight: 600;
    min-width: 70px;
    text-align: center;
    box-shadow: 0 2px 0 var(--borda);
    color: var(--texto-principal);
    font-size: 0.85rem;
}

/* Estilos de toque para mobile */
@media (max-width: 480px) {
    .perguntas-grid {
        grid-template-columns: 1fr;
    }
    .ferramentas-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   LOSANGO — ESTILOS ESPECÍFICOS
   ============================================ */

/* Toolbar brand */
.toolbar-brand {
    font-weight: 700;
    font-size: 1rem;
    color: var(--texto-principal);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

/* Seção calculadora H2 */
.calculator-section h2 {
    color: var(--texto-principal);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

/* Seção explicação */
.explicacao-section {
    background: var(--bg-card);
    border-radius: 1.25rem;
    padding: 2.5rem;
    box-shadow: var(--sombra);
    margin-bottom: 2rem;
}

.explicacao-section h2 {
    color: var(--cor-primaria);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.explicacao-section h3 {
    color: var(--texto-principal);
    font-size: 1.1rem;
    margin: 1.25rem 0 0.5rem;
}

.explicacao-section p,
.explicacao-section ul {
    color: var(--texto-secundario);
    margin-bottom: 0.75rem;
    line-height: 1.7;
}

.explicacao-section ul {
    margin-left: 1.5rem;
}

.explicacao-section ul li {
    margin-bottom: 0.25rem;
}

/* Layout em grid para explicação + diagrama */
.explicacao-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

@media (max-width: 768px) {
    .explicacao-grid {
        grid-template-columns: 1fr;
    }
}

/* Container do diagrama SVG */
.diagrama-container {
    background: var(--bg-hover);
    border-radius: 1rem;
    padding: 1rem;
    border: 2px solid var(--borda);
    display: flex;
    align-items: center;
    justify-content: center;
}

.diagrama-container svg {
    width: 100%;
    max-width: 320px;
    height: auto;
}

/* Resultado de erro inline */
#resultado-losango {
    margin-top: 1rem;
    padding: 1rem 1.25rem;
    border-radius: 0.75rem;
    font-weight: 600;
    display: none;
    animation: fadeIn 0.3s ease;
}

#resultado-losango.erro {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    border-left: 4px solid var(--cor-erro);
    color: var(--cor-erro);
}

/* FAQ grid */
.perguntas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.pergunta-item {
    background: var(--bg-hover);
    border-radius: 0.75rem;
    border: 1px solid var(--borda);
    overflow: hidden;
}

.pergunta-item summary {
    padding: 1rem 1.25rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--texto-principal);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 44px;
    transition: background 0.2s;
}

.pergunta-item summary::-webkit-details-marker { display: none; }

.pergunta-item summary::after {
    content: '▸';
    color: var(--cor-primaria);
    transition: transform 0.2s;
    flex-shrink: 0;
    margin-left: 0.5rem;
}

.pergunta-item[open] summary::after {
    transform: rotate(90deg);
}

.pergunta-item summary:hover,
.pergunta-item summary:focus {
    background: var(--borda);
    outline: 2px solid var(--cor-primaria);
    outline-offset: -2px;
}

.pergunta-item p {
    padding: 1rem 1.25rem 1.25rem;
    color: var(--texto-secundario);
    line-height: 1.7;
    margin: 0;
    border-top: 1px solid var(--borda);
}

/* FAQ items dentro da modal */
.faq-modal-item {
    margin-bottom: 0.75rem;
    border: 1px solid var(--borda);
    border-radius: 0.5rem;
    overflow: hidden;
}

.faq-modal-item summary {
    padding: 0.875rem 1rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--texto-principal);
    background: var(--bg-hover);
    list-style: none;
    min-height: 44px;
    display: flex;
    align-items: center;
}

.faq-modal-item summary::-webkit-details-marker { display: none; }

.faq-modal-item > p,
.faq-modal-item > ol,
.faq-modal-item > div {
    padding: 1rem;
    color: var(--texto-secundario);
    line-height: 1.7;
}

.faq-modal-item > ol {
    padding-left: 2rem;
}

.faq-modal-item > ol li {
    margin-bottom: 0.5rem;
}

/* Modal conteúdo h2 */
.modal-conteudo h2 {
    font-size: 1.25rem;
    color: var(--cor-primaria);
    margin-bottom: 1.25rem;
    padding-right: 2rem;
}

/* Footer links */
.footer a {
    color: var(--cor-primaria);
    text-decoration: none;
}

.footer a:hover,
.footer a:focus {
    text-decoration: underline;
}

/* Ferramentas section H2 */
.ferramentas-section h2 {
    color: var(--texto-principal);
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
}

/* Dark mode — adapta o preenchimento do losango SVG */
[data-theme="dark"] .diagrama-container polygon {
    fill: rgba(102, 126, 234, 0.25);
}

/* Atalhos dentro da modal */
.atalhos-lista {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.atalho-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem 0;
    color: var(--texto-secundario);
}

.atalho-item kbd {
    background: var(--bg-card);
    border: 2px solid var(--borda);
    padding: 4px 12px;
    border-radius: 6px;
    font-family: monospace;
    font-weight: 600;
    min-width: 70px;
    text-align: center;
    box-shadow: 0 2px 0 var(--borda);
    color: var(--texto-principal);
    font-size: 0.85rem;
}

/* Responsividade mobile */
@media (max-width: 480px) {
    .perguntas-grid {
        grid-template-columns: 1fr;
    }
    .ferramentas-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}