/* style.css - Sistema de Cotação de Moedas */

/* Variáveis CSS para facilitar manutenção */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
    --warning-color: #ffecb3;
    --background-light: #f5f5f5;
    --border-color: #ddd;
    --text-dark: #333;
    --text-light: #666;
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

/* Container principal */
.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    animation: fadeIn 0.5s ease-in;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.header p {
    font-size: 1.1em;
    opacity: 0.9;
}

/* Conteúdo principal */
.content {
    padding: 30px;
}

/* Tabela de cotações */
.quotation-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.quotation-table thead {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    color: white;
}

.quotation-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    font-size: 1.1em;
}

.quotation-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

.quotation-table tbody tr:hover {
    background-color: var(--background-light);
    transform: scale(1.01);
    transition: all 0.3s ease;
}

.quotation-table tbody tr:last-child td {
    border-bottom: none;
}

/* Destaque para moedas principais */
.highlight {
    background: linear-gradient(90deg, var(--warning-color) 0%, #fff3cd 100%);
    font-weight: 600;
}

.highlight:hover {
    background: linear-gradient(90deg, #ffe0a3 0%, #ffe8b3 100%) !important;
}

/* Estilos para valores monetários */
.currency-code {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 3px 8px;
    border-radius: 5px;
    font-size: 0.85em;
    margin-left: 8px;
}

.buy-value, .sell-value {
    font-weight: 600;
    font-size: 1.1em;
}

.buy-value {
    color: var(--success-color);
}

.sell-value {
    color: var(--danger-color);
}

/* Mensagem de erro */
.error-message {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    margin: 20px 0;
    border-left: 5px solid #dc3545;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.error-message strong {
    font-size: 1.2em;
    display: block;
    margin-bottom: 10px;
}

/* Botão de atualização */
.refresh-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 600;
    transition: all 0.3s ease;
    margin: 20px auto;
    box-shadow: var(--shadow-md);
}

.refresh-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

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

/* Container do botão */
.button-container {
    text-align: center;
    margin: 20px 0;
}

/* Informações de atualização */
.update-info {
    text-align: center;
    margin-top: 30px;
    padding: 20px;
    background: var(--background-light);
    border-radius: 10px;
    color: var(--text-light);
}

.update-time {
    font-weight: 600;
    color: var(--primary-color);
}

/* Footer */
.footer {
    background: var(--background-light);
    padding: 20px;
    text-align: center;
    color: var(--text-light);
    font-size: 0.9em;
    border-top: 1px solid var(--border-color);
}

/* Responsividade */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .header h1 {
        font-size: 1.8em;
    }
    
    .content {
        padding: 15px;
        overflow-x: auto;
    }
    
    .quotation-table {
        font-size: 0.9em;
    }
    
    .quotation-table th,
    .quotation-table td {
        padding: 10px;
    }
    
    .currency-code {
        display: inline;
        margin-left: 5px;
        font-size: 0.75em;
    }
}

@media (max-width: 480px) {
    .quotation-table {
        font-size: 0.8em;
    }
    
    .quotation-table th,
    .quotation-table td {
        padding: 8px;
    }
    
    .refresh-button {
        padding: 10px 20px;
        font-size: 0.9em;
    }
}

/* Loading spinner */
.loading {
    text-align: center;
    padding: 40px;
}

.loading::after {
    content: '';
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--secondary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Tooltip */
[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]:before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 0.8em;
    white-space: nowrap;
    display: none;
    z-index: 10;
}

[data-tooltip]:hover:before {
    display: block;
}