@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700&family=Sora:wght@600;700&display=swap");

:root {
    --bg-color: #0c0e12;
    --card-bg: #15191f;
    --sidebar-bg: #12161c;
    --border-color: rgba(233, 238, 245, 0.15);
    --text-color: #edf1f5;
    --text-muted: #adb4bd;
    --accent: #1fc9c2;
    --hover: #ffc233;
    --header-bg: #0a0c10;
    --input-bg: #1b2028;
}

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

body {
    font-family: "Manrope", "Segoe UI", sans-serif;
    font-size: 1rem;
    line-height: 1.75;
    background-color: var(--bg-color);
    background-image:
        radial-gradient(145% 110% at 8% -18%, rgba(31, 201, 194, 0.04), transparent 62%),
        radial-gradient(115% 95% at 86% 0%, rgba(255, 194, 51, 0.03), transparent 66%);
    color: var(--text-color);
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: var(--card-bg);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: calc(100vh - 40px - 28px);
    min-height: 0;
}

.sidebar-toggle {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 8px 10px;
    display: none;
    align-items: center;
    justify-content: center;
    line-height: 0;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.sidebar-toggle:hover {
    background: rgba(31, 201, 194, 0.1);
    border-color: var(--accent);
    color: var(--accent);
}



.main-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    flex: 1;
    min-height: 0;
    transition: grid-template-columns 0.25s ease;
}

body.sidebar-open .main-content {
    grid-template-columns: 280px 1fr;
}

.sidebar {
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    overflow: hidden;
    min-width: 0;
    height: 100%;
}

.sidebar-inner {
    width: 280px;
    height: 100%;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
}

.sidebar-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-color);
    letter-spacing: 0.01em;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.control-section {
    margin-bottom: 25px;
}

.control-section h3 {
    font-family: "Sora", "Segoe UI", sans-serif;
    font-size: 11px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.section-header {
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    margin: -8px -8px 12px -8px;
    border-radius: 8px;
    transition: background 0.2s;
}

.section-header:hover {
    background: rgba(31, 201, 194, 0.08);
}

.toggle-icon {
    font-size: 10px;
    transition: transform 0.2s;
    display: inline-block;
    color: var(--accent);
}

.toggle-icon.collapsed {
    transform: rotate(-90deg);
}

.section-content {
    max-height: none;
    overflow: visible;
}

#about-content {
    font-size: 12px;
    line-height: 1.5;
    color: var(--text-muted);
    padding-bottom: 4px;
}

#about-content p {
    margin: 0 0 6px;
}

.section-content.collapsed {
    display: none;
}

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

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    cursor: pointer;
    padding: 5px 6px;
    border-radius: 6px;
    transition: background 0.2s;
    color: var(--text-color);
}

.checkbox-item:hover {
    background: rgba(31, 201, 194, 0.08);
}

input[type="checkbox"] {
    cursor: pointer;
    width: 15px;
    height: 15px;
    accent-color: var(--accent);
}

input[type="radio"] {
    cursor: pointer;
    accent-color: var(--accent);
}

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

.radio-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    cursor: pointer;
    color: var(--text-color);
}

input[type="range"] {
    accent-color: var(--accent);
    width: 100%;
    cursor: pointer;
    display: block;
}

.slider-group {
    margin-bottom: 12px;
}

.slider-label {
    font-size: 12px;
    display: block;
    margin-bottom: 4px;
}

label {
    color: var(--text-muted);
}

.chart-container {
    padding: 30px 30px 60px 30px;
    position: relative;
    height: 100%;
    overflow: hidden;
    background: var(--chart-bg);
    transition: background-color 0.3s;

    /* Light mode defaults */
    --chart-bg: #ffffff;
    --chart-text: #333333;
    --chart-text-muted: #666666;
    --chart-axis: #666666;
    --chart-grid: #e0e0e0;
    --chart-panel-bg: #ffffff;
    --chart-panel-border: #cccccc;
    --chart-shadow: rgba(0, 0, 0, 0.08);
}

.chart-container.dark {
    --chart-bg: #15191f;
    --chart-text: #edf1f5;
    --chart-text-muted: #adb4bd;
    --chart-axis: rgba(233, 238, 245, 0.35);
    --chart-grid: rgba(233, 238, 245, 0.07);
    --chart-panel-bg: #1f252e;
    --chart-panel-border: rgba(233, 238, 245, 0.15);
    --chart-shadow: rgba(0, 0, 0, 0.4);
}

svg {
    display: block;
    margin: 0 auto;
}

.axis path,
.axis line {
    stroke: var(--chart-axis);
    stroke-width: 1.5;
    shape-rendering: crispEdges;
}

.axis text {
    fill: var(--chart-text);
    font-size: 13px;
    font-family: "Manrope", "Segoe UI", sans-serif;
}

.particle-line {
    stroke: var(--chart-text);
    stroke-width: 0.75;
    stroke-dasharray: 5, 4;
    opacity: 0.15;
    pointer-events: none;
}

.particle-label {
    font-size: 10px;
    fill: var(--chart-text);
    opacity: 0.4;
    pointer-events: none;
    font-family: "Manrope", "Segoe UI", sans-serif;
}

.sim-point {
    cursor: pointer;
    transition: opacity 0.2s;
}

.sim-point:hover {
    opacity: 0.7;
}

.tooltip {
    position: absolute;
    background: rgba(10, 12, 16, 0.95);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 12px;
    font-family: "Manrope", "Segoe UI", sans-serif;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
    z-index: 1000;
    max-width: 250px;
    line-height: 1.5;
}

.tooltip.visible {
    opacity: 1;
}

.tooltip.sticky {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent), 0 4px 12px rgba(0, 0, 0, 0.4);
}

.tooltip-link {
    display: block;
    margin-top: 8px;
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 11px;
}

.tooltip-link:hover {
    text-decoration: underline;
}

.legend-item {
    font-size: 11px;
    fill: var(--text-muted);
}

.survey-line {
    stroke: var(--chart-text-muted);
    stroke-width: 2;
    opacity: 0.4;
}

.survey-label {
    font-size: 12px;
    fill: var(--chart-text-muted);
    opacity: 0.8;
}

.suite-ring {
    fill: none;
    stroke-width: 1.5;
}

.mhd-field {
    fill: none;
    stroke-width: 1.5;
}

.emoji-text {
    font-size: 16px;
    pointer-events: none;
    user-select: none;
}

.emoji-image {
    pointer-events: none;
}

.rt-ring {
    fill: none;
    stroke-width: 1.5;
}

.highlight-star {
    fill: none;
    stroke-width: 2;
}

.legend-box {
    background: var(--chart-panel-bg);
    border: 1px solid var(--chart-panel-border);
    border-radius: 8px;
    padding: 7px 8px;
    font-size: 10px;
    font-family: "Manrope", "Segoe UI", sans-serif;
    max-height: 360px;
    overflow-y: auto;
    box-shadow: 0 2px 8px var(--chart-shadow);
}

.legend-title {
    font-family: "Sora", "Segoe UI", sans-serif;
    font-weight: 600;
    font-size: 10px;
    margin-bottom: 5px;
    color: var(--chart-text);
}

.legend-entry {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 2px;
    line-height: 1.25;
    cursor: pointer;
    border-radius: 3px;
    padding: 1px 3px;
    margin-left: -3px;
}

.legend-entry:hover {
    background: var(--chart-panel-border);
}

.legend-entry-active {
    background: var(--chart-panel-border);
}

.legend-entry-active .legend-name {
    font-weight: 600;
    color: var(--text-color);
}

.legend-number {
    font-weight: 600;
    min-width: 20px;
    color: var(--chart-text-muted);
}

.legend-name {
    color: var(--chart-text);
}

.point-label {
    font-size: 9px;
    font-weight: 600;
    fill: var(--chart-text);
    pointer-events: none;
    text-anchor: middle;
}

.chart-label {
    fill: var(--chart-text);
}

.icon-key {
    background: var(--chart-panel-bg);
    border: 1px solid var(--chart-panel-border);
    border-radius: 8px;
    padding: 10px;
    font-size: 11px;
    font-family: "Manrope", "Segoe UI", sans-serif;
    box-shadow: 0 2px 8px var(--chart-shadow);
}

.icon-key-title {
    font-family: "Sora", "Segoe UI", sans-serif;
    font-weight: 600;
    font-size: 12px;
    margin-bottom: 10px;
    color: var(--chart-text);
}

.icon-key-item {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.icon-key-item svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.icon-key-label {
    color: var(--chart-text-muted);
    font-size: 10px;
    flex: 1;
}

.icon-key-colorbar {
    margin-top: 6px;
}

.colorbar-label {
    font-size: 9px;
    color: var(--chart-text-muted);
    margin-bottom: 3px;
}

.colorbar-gradient {
    height: 10px;
    background: linear-gradient(to right, #f0f0f0, #ff8800, #cc2200);
    border-radius: 2px;
    border: 1px solid rgba(128, 128, 128, 0.3);
}

.chart-container:not(.dark) .colorbar-gradient {
    background: linear-gradient(to right, #000000, #ff8800, #cc2200);
}

.colorbar-ticks {
    display: flex;
    justify-content: space-between;
    font-size: 9px;
    color: var(--chart-text-muted);
    margin-top: 2px;
}

.icon-key-divider {
    border-top: 1px solid var(--chart-panel-border);
    margin: 6px 0;
}

/* ── Dual range slider ──────────────────────────────────────────── */
.year-range-display {
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 6px;
}

.dual-range-wrapper {
    position: relative;
    height: 20px;
    margin: 4px 0 12px;
}

.dual-range-track {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    height: 4px;
    background: var(--input-bg);
    border-radius: 2px;
    pointer-events: none;
}

.dual-range-fill {
    position: absolute;
    top: 0;
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
}

.dual-range {
    position: absolute;
    width: 100%;
    top: 0;
    height: 100%;
    margin: 0;
    background: transparent;
    pointer-events: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
    display: block;
}

.dual-range::-webkit-slider-runnable-track {
    background: transparent;
}

.dual-range::-moz-range-track {
    background: transparent;
    border: none;
}

.dual-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    pointer-events: all;
    border: none;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
    margin-top: -5px;
}

.dual-range::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    pointer-events: all;
    border: none;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

/* ── Clear-all button ───────────────────────────────────────────── */
.select-clear-btns {
    display: flex;
    gap: 6px;
    margin-bottom: 10px;
}

.clear-btn {
    flex: 1;
    padding: 4px 8px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    font-size: 11px;
    text-align: center;
    cursor: pointer;
}

.clear-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ── Year animation controls ────────────────────────────────────── */
.year-controls {
    display: flex;
    gap: 8px;
    margin-top: 4px;
}

.year-btn {
    flex: 1;
    padding: 6px 0;
    background: var(--input-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    font-family: "Manrope", "Segoe UI", sans-serif;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.year-btn:hover {
    background: rgba(31, 201, 194, 0.1);
    border-color: var(--accent);
    color: var(--accent);
}

.year-display {
    font-size: 72px;
    font-weight: 700;
    font-family: "Sora", "Segoe UI", sans-serif;
    fill: var(--chart-text);
    pointer-events: none;
}

.icon-key-fill {
    fill: var(--chart-text);
}

.icon-key-stroke {
    stroke: var(--chart-text);
}

.family-group {
    margin-bottom: 12px;
}

.family-header {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    padding: 5px 6px;
    margin-bottom: 4px;
    border-radius: 6px;
    transition: background 0.2s;
}

.family-header:hover {
    background: rgba(31, 201, 194, 0.08);
}

.family-toggle {
    font-size: 10px;
    transition: transform 0.2s;
    display: inline-block;
    width: 12px;
    color: var(--accent);
}

.family-toggle.collapsed {
    transform: rotate(-90deg);
}

.family-checkbox {
    cursor: pointer;
    accent-color: var(--accent);
}

.family-name {
    font-weight: 600;
    font-size: 12px;
    color: var(--text-color);
    flex: 1;
}

.family-sims {
    margin-left: 20px;
    overflow: visible;
}

.family-sims.collapsed {
    display: none;
}

.sim-item {
    margin-bottom: 4px;
}

.download-section {
    padding: 20px 20px 0;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.reset-section {
    padding: 12px 20px 20px;
}

.reset-btn {
    display: block;
    width: 100%;
    padding: 8px 0;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-muted);
    font-size: 12px;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
}

.reset-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.download-select {
    width: 100%;
    padding: 10px 12px;
    background: var(--accent);
    color: #0c0e12;
    border: none;
    border-radius: 999px;
    font-family: "Manrope", "Segoe UI", sans-serif;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%230c0e12' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.download-select:hover {
    background-color: #ffc233;
}

.download-select option {
    background: var(--card-bg);
    color: var(--text-color);
}

/* ── Page footer ────────────────────────────────────────────────── */
.page-footer {
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    color: var(--text-muted);
    opacity: 0.6;
}

.page-footer a {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* ── Mobile warning overlay ─────────────────────────────────────── */
.mobile-warning {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: var(--card-bg);
    align-items: center;
    justify-content: center;
    padding: 32px;
}

.mobile-warning-box {
    max-width: 320px;
    text-align: center;
}

.mobile-warning-box p {
    color: var(--text-color);
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.mobile-warning-box button {
    padding: 10px 24px;
    background: transparent;
    border: 1px solid var(--accent);
    border-radius: 8px;
    color: var(--accent);
    font-size: 14px;
    cursor: pointer;
}

.mobile-warning-box button:hover {
    background: rgba(31, 201, 194, 0.1);
}

/* ── Sidebar overlay (mobile backdrop) ─────────────────────────── */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 150;
    cursor: pointer;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

/* ── Mobile layout ──────────────────────────────────────────────── */
@media (max-width: 768px) {
    /* Chart always fills the full width — sidebar is an overlay */
    body.sidebar-open .main-content {
        grid-template-columns: 1fr;
    }

    /* Sidebar becomes a fixed drawer */
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 280px;
        z-index: 200;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        overflow: hidden;
        border-right: 1px solid var(--border-color);
    }

    body.sidebar-open .sidebar {
        transform: translateX(0);
    }

    body.sidebar-open .sidebar-overlay {
        display: block;
    }

    .sidebar-toggle {
        display: flex;
        position: fixed;
        top: 12px;
        left: 12px;
        z-index: 500;
    }

    .mobile-warning {
        display: flex;
    }

    /* Prevent grid transition firing on mobile */
    .main-content {
        transition: none;
    }
}