:root {
    --primary: #06b6d4; /* Neon cyan */
    --primary-hover: #0891b2;
    --bg-color: #0f172a; /* Slate 900 */
    --card-bg: #1e293b; /* Slate 800 */
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: #334155;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
}

.container {
    max-width: 1000px;
    width: 100%;
    background: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.5), 0 4px 6px -4px rgb(0 0 0 / 0.5);
}

h1 {
    margin-top: 0;
    font-size: 32px;
    color: var(--text-main);
    letter-spacing: -0.5px;
    text-align: center;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 30px;
    align-items: flex-start; /* Fix jumping layout */
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    text-align: left;
    white-space: nowrap;
}

select, input[type="number"] {
    padding: 10px;
    background-color: #0f172a;
    color: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    outline: none;
    box-sizing: border-box;
    text-align: left;
    transition: border-color 0.2s, box-shadow 0.2s;
    width: 100%;
}

select:focus, input[type="number"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(6, 182, 212, 0.2);
}

/* Segmented Control */
.segmented-control {
    display: flex;
    background: #0f172a;
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    width: 100%;
}
.segmented-control input[type="radio"] {
    display: none;
}
.segmented-control label {
    flex: 1;
    text-align: center;
    padding: 10px;
    cursor: pointer;
    margin: 0;
    transition: background 0.2s, color 0.2s;
    font-weight: 500;
    font-size: 14px;
}
.segmented-control input[type="radio"]:checked + label {
    background: #06b6d4;
    color: #0f172a;
    font-weight: 700;
}
.control-group.disabled {
    opacity: 0.3;
    pointer-events: none;
}

.summary-cards {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    flex: 1;
    background: linear-gradient(145deg, #1e293b, #0f172a);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}

.card h3 {
    margin: 0;
    font-size: 16px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.card p {
    margin: 10px 0 0 0;
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    text-shadow: 0 2px 10px rgba(6, 182, 212, 0.3);
}

.chart-container {
    position: relative;
    height: 500px;
    width: 100%;
    background-color: #0f172a;
    border-radius: 8px;
    padding: 15px;
    border: 1px solid var(--border);
}

.noUi-connect {
    background: var(--primary) !important;
}
.noUi-handle {
    width: 20px !important;
    height: 20px !important;
    right: -10px !important; /* Centered based on width */
    top: -2px !important; /* Vertically centered */
    border-radius: 50%;
    background: #f8fafc;
    border: 2px solid var(--primary);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.5);
    cursor: grab;
}
.noUi-handle:active {
    cursor: grabbing;
}
.noUi-handle::before,
.noUi-handle::after {
    display: none;
}