:root {
    --primary: #d4af37;
    --secondary: #2c3e50;
    --bg: #f4f7f6;
    --white: #ffffff;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg);
    color: #333;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: var(--white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

header {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 2px solid var(--primary);
    padding-bottom: 15px;
}

h1 { color: var(--secondary); margin: 0; font-size: 1.8rem; }

.section {
    background: #fff;
    margin-bottom: 25px;
    padding: 20px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
}

.section h2 {
    font-size: 1.1rem;
    color: var(--primary);
    margin-top: 0;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.input-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

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

label { 
    font-weight: 600; 
    margin-bottom: 8px; 
    font-size: 0.9rem;
    color: var(--secondary); 
}

input, select {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 0.95rem;
}

input:focus, select:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 5px rgba(212, 175, 55, 0.3);
}

/* Cores indicativas para horários */
.border-ponta { border-left: 4px solid #e74c3c; } /* Vermelho */
.border-cheias { border-left: 4px solid #f39c12; } /* Laranja */
.border-vazio { border-left: 4px solid #27ae60; } /* Verde */

.btn-main {
    width: 100%;
    padding: 15px;
    background-color: var(--secondary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-main:hover { background-color: #34495e; }

.btn-pdf {
    margin-top: 20px;
    padding: 10px 20px;
    background-color: #95a5a6;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.results-area {
    margin-top: 40px;
    display: none;
    animation: fadeIn 0.5s;
}

.card-result {
    display: flex;
    justify-content: space-around;
    margin-bottom: 30px;
    text-align: center;
}

.price-box {
    padding: 20px;
    border-radius: 10px;
    width: 45%;
}

.gold-box { background-color: #fff9db; border: 2px solid var(--primary); }
.conc-box { background-color: #ecf0f1; border: 2px solid #bdc3c7; }

.big-price { font-size: 2.2rem; font-weight: bold; color: var(--secondary); }
.chart-container { height: 300px; width: 100%; }

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

@media (max-width: 600px) {
    .container { padding: 15px; }
    .card-result { flex-direction: column; gap: 15px; }
    .price-box { width: 100%; }
}