/* Layout Algorithm Comparison Lab - vis-network MicroSim
   ====================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: aliceblue;
}

/* Container + network canvas ------------------------------------------ */
.container {
    position: relative;
    width: 100%;
    height: 100vh;
}

#network {
    width: 100%;
    height: 100%;
    background-color: aliceblue;
}

/* Title -------------------------------------------------------------- */
.title {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 18px;
    font-weight: bold;
    color: #1a3a6c;
    background-color: rgba(240, 248, 255, 0.85);
    padding: 3px 12px;
    white-space: nowrap;
    z-index: 10;
}

/* Legend ------------------------------------------------------------- */
.legend {
    position: absolute;
    top: 44px;
    left: 10px;
    padding: 6px 8px;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    z-index: 10;
}

.legend-item {
    display: flex;
    align-items: center;
    margin: 3px 0;
    font-size: 11px;
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    margin-right: 6px;
    border: 2px solid #333;
    flex-shrink: 0;
}

.color-cluster-a { background-color: #4c8bf5; }
.color-cluster-b { background-color: #34a853; }
.color-bridge    { background-color: #fbbc04; }
.color-pinned    { background-color: #ffffff; border-color: #d93025; }
.pin-glyph { font-size: 11px; }

/* Right panel -------------------------------------------------------- */
.right-panel {
    position: absolute;
    top: 44px;
    right: 10px;
    width: 260px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 10;
}

.panel-card {
    background-color: rgba(255, 255, 255, 0.97);
    border-radius: 8px;
    padding: 12px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.12);
}

.panel-title {
    font-weight: bold;
    font-size: 13px;
    color: #1a3a6c;
    margin-bottom: 8px;
}

/* Toggle (Layout Mode) ---------------------------------------------- */
.toggle-row {
    display: flex;
    gap: 0;
    margin-bottom: 10px;
    border: 2px solid #4c8bf5;
    border-radius: 6px;
    overflow: hidden;
}

.toggle-btn {
    flex: 1;
    padding: 8px 6px;
    font-size: 12px;
    font-weight: bold;
    border: none;
    background-color: #ffffff;
    color: #4c8bf5;
    cursor: pointer;
    transition: background-color 0.15s, color 0.15s;
}

.toggle-btn.active {
    background-color: #4c8bf5;
    color: #ffffff;
}

.toggle-btn:not(.active):hover {
    background-color: #e8f0fe;
}

/* Labelled selects --------------------------------------------------- */
.ctl-label {
    display: block;
    font-size: 12px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.ctl-label select {
    display: block;
    width: 100%;
    margin-top: 4px;
    padding: 6px;
    font-size: 12px;
    font-weight: normal;
    border: 1px solid #bbb;
    border-radius: 4px;
    background-color: #fff;
    cursor: pointer;
}

.ctl-label.disabled {
    color: #aaa;
}

.ctl-label select:disabled {
    background-color: #f0f0f0;
    color: #aaa;
    cursor: not-allowed;
}

/* Buttons ------------------------------------------------------------ */
.btn-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.btn {
    padding: 8px 12px;
    font-size: 12px;
    font-weight: bold;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
}

.btn-primary {
    background-color: #4c8bf5;
    color: white;
}

.btn-primary:hover { background-color: #3b78e7; }

.btn-primary.active {
    background-color: #d93025;
}

.btn-primary.active:hover { background-color: #c5221f; }

.btn-secondary {
    background-color: #757575;
    color: white;
}

.btn-secondary:hover { background-color: #616161; }

.status-line {
    margin-top: 8px;
    font-size: 11px;
    color: #555;
    text-align: center;
    font-style: italic;
}

/* Scenario card ------------------------------------------------------ */
.scenario-card {
    border-left: 4px solid #fbbc04;
}

.scenario-text {
    font-size: 12.5px;
    line-height: 1.5;
    color: #222;
    min-height: 54px;
    margin-bottom: 8px;
}

.btn-scenario {
    width: 100%;
    background-color: #fbbc04;
    color: #333;
}

.btn-scenario:hover { background-color: #f0b400; }

.scenario-hint {
    margin-top: 8px;
    font-size: 11px;
    color: #777;
    line-height: 1.4;
}

/* Responsive: stack the panel below the graph on narrow screens ------ */
@media (max-width: 720px) {
    .right-panel {
        position: static;
        width: auto;
        margin: 8px;
        top: auto;
        right: auto;
    }
    .container {
        height: auto;
    }
    #network {
        height: 62vh;
        min-height: 380px;
    }
    .title { font-size: 15px; }
    .legend { font-size: 10px; }
}