/* Calculadora de Porcentagem Didática - Estilos CSS */

/* Reset e base */
.calculadora-porcentagem-container {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    color: #333;
    position: relative;
    overflow: hidden;
}

.calculadora-porcentagem-container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
    pointer-events: none;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

/* Tema claro */
.tema-claro {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.tema-claro .calc-header,
.tema-claro .calc-content,
.tema-claro .calc-historico {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

/* Tema escuro */
.tema-escuro {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
}

.tema-escuro .calc-header,
.tema-escuro .calc-content,
.tema-escuro .calc-historico {
    background: rgba(44, 62, 80, 0.95);
    backdrop-filter: blur(10px);
    color: #ecf0f1;
}

/* Header */
.calc-header {
    text-align: center;
    padding: 30px 20px;
    border-radius: 15px;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.calc-titulo {
    font-size: 2.2em;
    font-weight: 700;
    margin: 0 0 10px 0;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.calc-subtitulo {
    font-size: 1.1em;
    color: #666;
    margin: 0;
    opacity: 0.8;
}

.tema-escuro .calc-subtitulo {
    color: #bdc3c7;
}

/* Abas */
.calc-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
    justify-content: center;
}

.calc-tab {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    padding: 12px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    color: white;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    font-size: 0.9em;
    position: relative;
    overflow: hidden;
}

.calc-tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.calc-tab:hover::before {
    left: 100%;
}

.calc-tab:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.calc-tab.active {
    background: linear-gradient(45deg, #667eea, #764ba2);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
    transform: translateY(-2px);
}

/* Conteúdo */
.calc-content {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
    backdrop-filter: blur(10px);
}

.calc-tab-content {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.calc-tab-content.active {
    display: block;
}

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

.calc-tab-content h4 {
    color: #667eea;
    font-size: 1.4em;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 600;
}

/* Formulário */
.calc-form {
    margin-bottom: 30px;
}

.calc-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 25px;
}

@media (max-width: 600px) {
    .calc-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}

.calc-field {
    display: flex;
    flex-direction: column;
}

.calc-field label {
    font-weight: 600;
    margin-bottom: 8px;
    color: #555;
    font-size: 0.95em;
}

.tema-escuro .calc-field label {
    color: #bdc3c7;
}

.input-group {
    display: flex;
    align-items: center;
    background: white;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
}

.input-group:focus-within {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.input-group input {
    flex: 1;
    border: none;
    padding: 15px;
    font-size: 1.1em;
    outline: none;
    background: transparent;
    color: #333;
}

.input-group input::placeholder {
    color: #aaa;
}

.input-addon {
    padding: 15px;
    background: #f8f9fa;
    color: #667eea;
    font-weight: 600;
    border-left: 1px solid #e1e5e9;
    min-width: 50px;
    text-align: center;
}

.tema-escuro .input-group {
    background: #34495e;
    border-color: #4a5f7a;
}

.tema-escuro .input-group input {
    color: #ecf0f1;
}

.tema-escuro .input-addon {
    background: #2c3e50;
    color: #3498db;
    border-left-color: #4a5f7a;
}

/* Botões */
.calc-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-bottom: 25px;
}

.btn-calcular,
.btn-limpar,
.btn-limpar-historico {
    padding: 15px 30px;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    text-transform: none;
}

.btn-calcular {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-calcular:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-limpar,
.btn-limpar-historico {
    background: #f8f9fa;
    color: #666;
    border: 2px solid #e1e5e9;
}

.btn-limpar:hover,
.btn-limpar-historico:hover {
    background: #e9ecef;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* Resultado */
.calc-resultado {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    font-size: 1.2em;
    font-weight: 600;
    margin-top: 20px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    display: none;
    animation: slideIn 0.5s ease-out;
}

.calc-resultado.show {
    display: block;
}

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

.resultado-valor {
    font-size: 1.5em;
    font-weight: 700;
    margin: 10px 0;
}

.resultado-explicacao {
    font-size: 0.9em;
    opacity: 0.9;
    margin-top: 10px;
    line-height: 1.4;
}

/* Explicações */
.calc-explicacao {
    background: #f8f9fa;
    border-left: 4px solid #667eea;
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
}

.tema-escuro .calc-explicacao {
    background: #2c3e50;
    border-left-color: #3498db;
}

.calc-explicacao h5 {
    color: #667eea;
    margin-bottom: 15px;
    font-size: 1.1em;
}

.tema-escuro .calc-explicacao h5 {
    color: #3498db;
}

.calc-explicacao p {
    margin-bottom: 15px;
    line-height: 1.6;
    color: #666;
}

.tema-escuro .calc-explicacao p {
    color: #bdc3c7;
}

.formula,
.exemplo {
    background: white;
    padding: 15px;
    border-radius: 8px;
    margin: 10px 0;
    border: 1px solid #e1e5e9;
    font-family: 'Courier New', monospace;
}

.tema-escuro .formula,
.tema-escuro .exemplo {
    background: #34495e;
    border-color: #4a5f7a;
    color: #ecf0f1;
}

/* Histórico */
.calc-historico {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 25px;
    position: relative;
    z-index: 1;
    backdrop-filter: blur(10px);
}

.calc-historico h4 {
    color: #667eea;
    margin-bottom: 20px;
    font-size: 1.3em;
    text-align: center;
}

.tema-escuro .calc-historico h4 {
    color: #3498db;
}

#historico-lista {
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: 15px;
}

.historico-item {
    background: #f8f9fa;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 10px;
    border-left: 3px solid #667eea;
    font-size: 0.9em;
    animation: slideInRight 0.3s ease-out;
}

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

.tema-escuro .historico-item {
    background: #34495e;
    border-left-color: #3498db;
    color: #ecf0f1;
}

.historico-vazio {
    text-align: center;
    color: #999;
    font-style: italic;
    padding: 20px;
}

.tema-escuro .historico-vazio {
    color: #7f8c8d;
}

.btn-limpar-historico {
    width: 100%;
    margin-top: 10px;
}

/* Responsividade */
@media (max-width: 768px) {
    .calculadora-porcentagem-container {
        margin: 10px;
        padding: 15px;
    }
    
    .calc-titulo {
        font-size: 1.8em;
    }
    
    .calc-tabs {
        flex-direction: column;
        align-items: center;
    }
    
    .calc-tab {
        width: 100%;
        max-width: 300px;
    }
    
    .calc-content,
    .calc-historico {
        padding: 20px;
    }
    
    .calc-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-calcular,
    .btn-limpar {
        width: 100%;
        max-width: 200px;
    }
}

/* Animações de loading */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Tooltips */
.tooltip {
    position: relative;
    cursor: help;
}

.tooltip::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.8em;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    z-index: 1000;
}

.tooltip:hover::before {
    opacity: 1;
}

/* Efeitos visuais adicionais */
.calc-field:hover .input-group {
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.1);
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(102, 126, 234, 0); }
    100% { box-shadow: 0 0 0 0 rgba(102, 126, 234, 0); }
}

@media (max-width: 600px) {
  .calc-content {
    padding: 10px !important;
  }
  .calc-field,
  .input-group {
    width: 100% !important;
    min-width: 0 !important;
    box-sizing: border-box;
  }
  .input-group input,
  .input-addon {
    font-size: 1em;
    padding: 12px !important;
  }
}