/* --- Punnett Square Calculator Tool Styles --- */
#punnett-visual-input-tool {
    --primary-bg: #ffffff;
    --secondary-bg: #f7f9fc;
    --border-color: #e1e4e8;
    --text-color: #24292e;
    --label-color: #586069;
    --accent-color: #2c6e49; /* A green for the genetics theme */
    --accent-hover: #4c956c;
    --error-color: #d73a49;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --border-radius: 8px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --input-cell-size: 60px;
    font-family: var(--font-family);
    color: var(--text-color);
}

.punnett-container-visual {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin: auto;
}

.settings-panel-visual, .results-panel-visual {
    background-color: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.panel-title { font-family: var(--font-family); margin-top: 0; margin-bottom: 0.5rem; font-size: 1.5em; font-weight: 600; color: var(--text-color); }
.panel-subtitle { font-family: var(--font-family); margin-top: 0; margin-bottom: 1.5rem; color: var(--label-color); font-size: 0.9em; }

/* Visual Input Grid */
#visual-input-grid { display: flex; margin-bottom: 2rem; }
.gamete-input-col { display: flex; flex-direction: column; gap: 5px; padding-top: calc(var(--input-cell-size) + 5px); }
.gamete-input-row { display: flex; gap: 5px; }
.gamete-input-cell { width: var(--input-cell-size); height: var(--input-cell-size); border: 2px dashed var(--border-color); border-radius: var(--border-radius); font-size: 1.5rem; font-weight: bold; text-align: center; background-color: #f7f9fc; transition: all 0.2s ease; }
.gamete-input-cell:focus { outline: none; border-color: var(--accent-color); background-color: #fff; box-shadow: 0 0 0 4px rgba(44, 110, 73, 0.2); }
.add-gamete-btn { width: var(--input-cell-size); height: var(--input-cell-size); border: 2px dashed var(--border-color); border-radius: var(--border-radius); background-color: transparent; cursor: pointer; color: var(--label-color); font-size: 2rem; line-height: 1; transition: all 0.2s ease; }
.add-gamete-btn:hover { border-color: var(--accent-hover); color: var(--accent-hover); background-color: #f0fdf4; }
.punnett-core-area { display: flex; flex-direction: column; gap: 5px; margin-left: 5px; }
.input-placeholder-grid { display: grid; gap: 5px; }
.placeholder-cell { width: var(--input-cell-size); height: var(--input-cell-size); background-color: #f1f1f1; border-radius: var(--border-radius); display: flex; justify-content: center; align-items: center; font-size: 2rem; color: var(--border-color); }

/* Trait Definitions */
.trait-definitions-container-visual { margin-top: 1rem; }
.trait-definition-section { border-left: 3px solid var(--accent-color); padding-left: 1rem; margin-top: 1.5rem; }
.trait-definition-title { font-weight: bold; margin-bottom: 1rem; }
.input-group { margin-bottom: 1rem; }
.input-group label { display: block; font-weight: 500; color: var(--label-color); margin-bottom: 0.5rem; }
.input-group-row { display: flex; gap: 1rem; flex-wrap: wrap; }
.input-group-row .input-group { flex: 1; min-width: 200px; }
#punnett-visual-input-tool input[type="text"], #punnett-visual-input-tool select { width: 100%; padding: 0.6rem; border: 1px solid var(--border-color); border-radius: var(--border-radius); font-size: 1rem; background-color: var(--secondary-bg); box-sizing: border-box; }
#punnett-visual-input-tool input[type="text"]:focus, #punnett-visual-input-tool select:focus { outline: none; border-color: var(--accent-color); box-shadow: 0 0 0 3px rgba(44, 110, 73, 0.2); }
#calculate-btn-visual { width: 100%; padding: 0.8rem; font-size: 1.1rem; font-weight: 600; color: #fff; background-color: var(--accent-color); border: none; border-radius: var(--border-radius); cursor: pointer; transition: background-color 0.2s; margin-top: 1rem; }
#calculate-btn-visual:hover { background-color: var(--accent-hover); }

/* Results */
.punnett-grid-container-visual { overflow-x: auto; padding-bottom: 1rem; }
.punnett-grid-result { border-collapse: collapse; text-align: center; margin-top: 1rem; width: 100%; }
.punnett-grid-result th, .punnett-grid-result td { border: 1px solid var(--border-color); padding: 0.5rem; min-width: 70px; height: 70px; font-size: 1.2rem; }
.punnett-grid-result th { background-color: var(--secondary-bg); font-weight: bold; }
.punnett-grid-result .top-left-corner { background-color: transparent; border: none; }
.results-columns { display: grid; grid-template-columns: 1fr; gap: 2rem; }
@media (min-width: 768px) { .results-columns { grid-template-columns: 1fr 1fr; } }
.results-section h3 { font-family: var(--font-family); color: var(--text-color); border-bottom: 1px solid var(--border-color); padding-bottom: 0.5rem; margin-bottom: 1rem; font-weight: 600; }
.results-table { width: 100%; border-collapse: collapse; font-size: 0.9em; }
.results-table th, .results-table td { border-bottom: 1px solid var(--border-color); padding: 0.75rem; text-align: left; }
.results-table th { font-weight: 600; background-color: var(--secondary-bg); }
.results-table tr:last-child td { border-bottom: none; }
.chart-bar-container { width: 100%; background-color: var(--secondary-bg); border-radius: var(--border-radius); overflow: hidden; height: 1.25em; margin-top: 0.25em; }
.chart-bar { height: 100%; background-color: var(--accent-color); transition: width 0.5s ease-in-out; }
.error-message { color: var(--error-color); background-color: rgba(215, 58, 73, 0.1); border: 1px solid var(--error-color); padding: 0.75rem; margin-top: 1rem; border-radius: var(--border-radius); display: none; }