/* Basic reset and typography */
body {
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", Tahoma, Arial, sans-serif;
    color: #333;
    background: #fdfdfd;
    line-height: 1.6;
}
header {
    background: #f5f5f5;
    padding: 2rem 1rem 1.5rem;
    text-align: center;
    border-bottom: 2px solid #e0e0e0;
}
header h1 {
    margin: 0;
    font-size: 1.8rem;
    font-weight: 600;
}
header .eye {
    display: inline-block;
    position: relative;
    top: 0.1em;
}
header .tagline {
    margin: 0.5rem auto 0;
    max-width: 800px;
    font-size: 1rem;
    color: #555;
}
main {
    max-width: 900px;
    margin: 0 auto;
    padding: 1rem;
}
section {
    margin: 2.5rem 0;
}
section h2 {
    font-size: 1.5rem;
    margin: 0 0 0.5rem;
    color: #222;
    border-left: 4px solid #4a90e2;
    padding-left: 0.5rem;
}
section p {
    font-size: 0.95rem;
    margin: 0 0 1.2rem;
}
.chart {
    width: 100%;
    max-width: 100%;
    height: 420px;
    /* The chart will resize responsively via Plotly config */
}
#pareto-chart {
    height: 450px; /* slightly taller for clarity */
}
.logs {
    background: #111;
    color: #eee;
    font-family: "Courier New", Courier, monospace;
    padding: 1rem;
    margin-top: 0.5rem;
    max-height: 200px;
    overflow-y: auto;
    border-radius: 4px;
}
#toggle-logs {
    background: #4a90e2;
    color: #fff;
    border: none;
    padding: 0.5rem 0.8rem;
    font-size: 0.9rem;
    border-radius: 3px;
    cursor: pointer;
    margin-bottom: 0.5rem;
}
#toggle-logs:hover {
    background: #4078c0;
}
.hidden {
    display: none;
}

/* Tree search diagram */
#tree-container {
    width: 100%;
    height: 420px;
    margin-bottom: 1rem;
}
.node circle {
    fill: #1f77b4;
    stroke: #fff;
    stroke-width: 1.5px;
}
.node text {
    font-size: 0.8rem;
    fill: #333;
}
.link {
    fill: none;
    stroke: #555;
    stroke-width: 2px;
}
footer {
    text-align: center;
    font-size: 0.8rem;
    color: #888;
    padding: 1.5rem 0;
    background: #f5f5f5;
    border-top: 1px solid #e0e0e0;
}
footer a {
    color: inherit;
}

.current-guide {
    padding: 18px 24px;
    background: #edf4e4;
    border-bottom: 1px solid #c6d8b7;
    font-size: 0.86rem;
}
.current-guide a {
    display: inline-block;
    margin: 5px 8px 0 0;
}
#legacy-status {
    padding: 12px 24px;
    margin: 0;
}
button {
    min-height: 44px;
}
body {
    overflow-wrap: anywhere;
}
.chart {
    max-width: 100%;
}
#tree-container {
    overflow: auto;
}
details {
    margin: 20px;
}
td,
th {
    padding: 7px;
    text-align: left;
}
pre {
    white-space: pre-wrap;
}
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}