/* Styles for Gravel Calculator */
.calcufacil-gravel_calculator.calcufacil-container {
    max-width: 850px; margin: 25px auto; background: #FEFBF5; padding: 25px;
    border-radius: 10px; box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    display: flex; flex-direction: row; flex-wrap: wrap; gap: 30px;
    font-family: 'Arial', sans-serif; border: 1px solid #D2B48C; /* Tan */
    box-sizing: border-box;
}
.calcufacil-gravel_calculator.calcufacil-container *,
.calcufacil-gravel_calculator.calcufacil-container *::before,
.calcufacil-gravel_calculator.calcufacil-container *::after { box-sizing: border-box; }

.calcufacil-gravel_calculator h2 {
    width: 100%; text-align: center; color: #8B4513; /* SaddleBrown */
    margin-top:0; margin-bottom: 20px; font-size: 1.6em;
}
.calcufacil-gravel_calculator h3 {
    color: #A0522D; /* Sienna */ font-size: 1.2em; margin-top: 20px; margin-bottom: 15px;
    border-bottom: 1px solid #F5DEB3; padding-bottom: 5px;
}
.calcufacil-gravel_calculator .calcufacil-left.calculator-form {
    flex: 1.3; min-width: 350px; padding: 20px; background-color: #fff;
    border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); border: 1px solid #FFEBCD;
}
.calcufacil-gravel_calculator .calcufacil-right.results {
    flex: 1; min-width: 300px; background: #FAF0E6; /* Linen */
    padding: 25px; border-radius: 8px; border: 1px solid #F5DEB3; /* Wheat */
    box-shadow: 0 2px 8px rgba(0,0,0,0.05); display: flex; flex-direction: column;
    justify-content: flex-start; align-items: center;
}

.calcufacil-gravel_calculator .input-group { margin-bottom: 15px; }
.calcufacil-gravel_calculator label {
    display: block; font-weight: 600; color: #8B4513;
    margin-bottom: 6px; font-size: 0.95em;
}
.calcufacil-gravel_calculator input[type="text"],
.calcufacil-gravel_calculator select {
    width: 100%; padding: 10px 12px; border: 1px solid #D2B48C;
    border-radius: 5px; font-size: 1em; background: #FFF8DC; font-family: sans-serif;
}
.calcufacil-gravel_calculator input[type="text"]:focus,
.calcufacil-gravel_calculator select:focus {
    border-color: #A0522D; box-shadow: 0 0 0 2px rgba(139, 69, 19, 0.2); outline: none;
}
.calcufacil-gravel_calculator .small-note { font-size: 0.8em; color: #A0522D; margin-top:3px; line-height: 1.3;}


.calcufacil-gravel_calculator button[type="submit"] {
    background-color: #A0522D; color: #fff; padding: 12px 25px;
    border: none; border-radius: 5px; cursor: pointer; font-size: 1.05em;
    width: 100%; transition: background-color 0.3s ease; font-weight: 600; margin-top:15px;
}
.calcufacil-gravel_calculator button[type="submit"]:hover { background-color: #8B4513; }

/* Results Styling */
.calcufacil-gravel_calculator .results-header h2 { color: #8B4513; margin-bottom: 20px; font-size: 1.4em; }
.calcufacil-gravel_calculator .initial-message {
    text-align: center; color: #8B4513; font-style: italic; padding: 20px;
    background-color: #FAF0E6; border: 1px dashed #D2B48C; border-radius: 5px; width:100%;
}
.calcufacil-gravel_calculator .calculation-summary { width: 100%; margin-bottom: 20px; text-align:center;}
.calcufacil-gravel_calculator p.result-note { font-size: 0.9em; color: #8B4513; margin-top:5px;}

.calcufacil-gravel_calculator .main-result {
    display: flex; justify-content: space-between; align-items: center;
    background-color: #F5DEB3; padding: 10px 15px; border-radius: 4px;
    border: 1px solid #DEB887; font-size: 1.05em; color: #8B4513;
    margin-bottom: 8px; width: 100%;
}
.calcufacil-gravel_calculator .main-result.final-result {
    background-color: #8B4513; color: #fff; font-size: 1.3em;
    padding: 15px 20px; border-color: #A0522D; margin-top:10px; font-weight: bold;
}
.calcufacil-gravel_calculator .main-result span:first-child { text-align:left; padding-right:10px; }
.calcufacil-gravel_calculator .main-result span:last-child { font-weight: bold; text-align:right; }

.calcufacil-gravel_calculator .errors {
    color: #C62828; background-color: #FFEBEE; border: 1px solid #FFCDD2;
    padding: 10px 15px; border-radius: 4px; margin: 15px 0; text-align: center; width:100%;
}
.calcufacil-gravel_calculator .errors ul { list-style: none; padding: 0; margin: 0; }

.calcufacil-gravel_calculator .disclaimer-box.info {
    padding: 15px; background-color: #FFF5EE;
    border: 1px solid #FFEBCD; border-left: 5px solid #D2B48C;
    border-radius: 8px; font-size: 0.85em; color: #A0522D; width:100%;
}
.calcufacil-gravel_calculator .disclaimer-box.info h4 {
    color: #8B4513; font-size: 1.1em; margin-top: 0; margin-bottom: 10px;
}
.calcufacil-gravel_calculator .disclaimer-box.info ul { list-style: disc; margin-left: 20px; padding-left: 0; line-height: 1.6; }

/* Responsive */
@media (max-width: 768px) {
    .calcufacil-gravel_calculator.calcufacil-container { flex-direction: column; gap: 20px; padding: 15px; }
    .calcufacil-gravel_calculator .calcufacil-left.calculator-form,
    .calcufacil-gravel_calculator .calcufacil-right.results { min-width: unset; width: 100%; }
}