/* css/style.css */

/* --- EV-Inspired Theme Variables --- */
:root {
    --bg-main: #f4f8f5;
    --bg-card: rgba(255, 255, 255, 0.96);
    --bg-hover: #edf5f1;
    --bg-input: rgba(255, 255, 255, 0.92);

    --text-main: #0a2416;
    --text-muted: #3f5f54;
    --text-light: #6a8b7f;

    --border-color: #d7e5dc;
    --border-hover: #bfd8c8;

    --accent-primary: #13ce74;
    --accent-hover: #0f9a56;
    --accent-strong: #0b6638;
    --accent-soft: #89e7ba;
    --accent-gradient: linear-gradient(135deg, #13ce74, #0f9a56);
    --accent-glow: rgba(19, 206, 116, 0.25);

    --accent-green: #13ce74;
    --accent-green-hover: #0f9a56;
    --accent-green-gradient: linear-gradient(135deg, #13ce74, #0f9a56);

    --shadow-sm: 0 1px 3px rgba(6, 55, 31, 0.08);
    --shadow-md: 0 6px 16px -6px rgba(6, 55, 31, 0.14);
    --shadow-lg: 0 14px 40px -24px rgba(6, 55, 31, 0.25);
    --shadow-hover: 0 18px 42px -26px rgba(6, 55, 31, 0.3);

    /* Layout Details */
    --radius-sm: 0;
    --radius-md: 0;
    --radius-lg: 0;
    --radius-full: 0;

    --transition-fast: 0.15s ease;
    --transition-smooth: 0.2s ease;
}

/* --- Base Resets & Typography --- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    background: linear-gradient(145deg, #f1f8f4 0%, #ffffff 36%, #edf5f1 100%);
    color: var(--text-main);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 12.5px;
    line-height: 1.5;
    margin: 0;
    padding-bottom: 60px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar for sleekness */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* --- Layout Structure --- */
.container {
    width: 98.5%;
    max-width: 2200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* --- Header --- */
header.container {
    padding: 0.95rem 16px;
    background: rgba(255, 255, 255, 0.88);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.8rem;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

header.container h1 {
    margin: 0 0 8px 0;
    font-size: 1.7rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-main);
    display: flex;
    align-items: center;
}

/* A sleek logo indicator */
header.container h1::before {
    content: "";
    display: inline-block;
    width: 26px;
    height: 26px;
    background: var(--accent-gradient);
    border-radius: var(--radius-sm);
    margin-right: 12px;
    box-shadow: 0 4px 12px var(--accent-glow);
}

header.container p.disclaimer {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 0 0 0 38px;
    font-weight: 400;
}

/* --- Main Layout --- */
.sim-container {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

/* --- Sidebar --- */
#sidebar {
    flex: 0 0 clamp(360px, 26vw, 430px);
    background: var(--bg-card);
    padding: 1.1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 24px;
    max-height: calc(100vh - 48px);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    /* Soften border */
    backdrop-filter: blur(10px);
}

#sidebar h2 {
    margin: 0;
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-main);
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    letter-spacing: -0.01em;
}

/* --- Form Controls --- */
label {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
    display: block;
}

select,
input[type="number"],
input[type="text"] {
    width: 100%;
    padding: 9px 10px;
    border: 1px solid var(--border-hover);
    border-radius: 0;
    font-family: inherit;
    font-size: 0.84rem;
    color: var(--text-main);
    background-color: var(--bg-input);
    transition: var(--transition-smooth);
    appearance: none;
    -webkit-appearance: none;
}

/* Custom Dropdown Arrow */
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%233f5f54'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 14px;
    padding-right: 36px;
    cursor: pointer;
}

select:focus,
input[type="number"]:focus {
    outline: none;
    border-color: var(--accent-primary);
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(19, 206, 116, 0.2);
}

select:hover,
input[type="number"]:hover {
    border-color: var(--accent-soft);
    background-color: #fff;
}

/* --- Abstract Action Button --- */
#runModelBtn {
    width: 100%;
    padding: 10px 12px;
    background: var(--accent-primary);
    color: #06371f;
    border: 1px solid var(--accent-hover);
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 12px rgba(19, 206, 116, 0.25);
}

#runModelBtn:hover {
    transform: translateY(-1px);
    background: #1be184;
    border-color: var(--accent-strong);
}

#runModelBtn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(19, 206, 116, 0.25);
}

/* --- Expandable Groups (Sidebar) --- */
.group {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    overflow: hidden;
    transition: var(--transition-smooth);
}

.group:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.group-title {
    margin: 0;
    padding: 10px 11px;
    font-size: 0.82rem;
    font-weight: 600;
    background: rgba(237, 245, 241, 0.85);
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition-fast);
}

.group-title:hover {
    background: var(--bg-hover);
}

/* Arrow rotation */
.group-title::after {
    content: "";
    width: 14px;
    height: 14px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%233f5f54'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    transition: transform var(--transition-smooth);
    transform: rotate(0deg);
}

.group-title.collapsed::after {
    transform: rotate(-90deg);
}

.group-content {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--transition-smooth);
    background: var(--bg-card);
}

.group-content.expanded {
    grid-template-rows: 1fr;
    border-top: 1px solid var(--border-color);
}

.group-content-inner {
    overflow: hidden;
    padding: 16px;
}

/* Subgroups */
.sub-group {
    margin-bottom: 12px;
}

.sub-group:last-child {
    margin-bottom: 0;
}

.sub-group-title {
    font-size: 0.78rem;
    font-weight: 500;
    margin: 0 0 8px 0;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: color var(--transition-fast);
}

.sub-group-title:hover {
    color: var(--accent-primary);
}

.sub-group-title::before {
    content: "▸";
    font-size: 1.2em;
    margin-right: 6px;
    transition: transform var(--transition-fast);
}

.sub-group-title.expanded::before {
    transform: rotate(90deg);
    color: var(--text-main);
}

.sub-group-title.expanded {
    color: var(--text-main);
}

.sub-group-content {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--transition-smooth);
    padding-left: 12px;
    border-left: 2px solid var(--border-color);
    margin-left: 4px;
}

.sub-group-content.expanded {
    grid-template-rows: 1fr;
    margin-top: 8px;
    margin-bottom: 12px;
}

.sub-group-content-inner {
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Inputs in Sidebar */
.tech-input-container {
    background: var(--bg-input);
    padding: 12px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    transition: var(--transition-smooth);
}

.tech-input-container:hover {
    border-color: var(--border-hover);
    background: var(--bg-card);
    box-shadow: var(--shadow-sm);
}

.tech-input-container legend {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 8px;
}

.tech-behavior-selector,
.activity-growth-input {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
    min-width: 0;
}

.activity-growth-input {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.tech-behavior-selector label,
.activity-growth-input label {
    font-size: 0.68rem;
    margin: 0;
    text-transform: none;
    letter-spacing: 0.01em;
    min-width: 0;
}

.tech-behavior-selector select {
    width: 170px;
    max-width: 55%;
    min-width: 130px;
    padding: 6px 10px;
}

.activity-growth-input input {
    width: 86px;
    padding: 6px 10px;
}

/* Range Sliders */
input[type=range] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    background: transparent;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    height: 16px;
    width: 16px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: pointer;
    margin-top: -6px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: transform var(--transition-fast);
}

input[type=range]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 4px;
    cursor: pointer;
    background: var(--border-color);
    border-radius: var(--radius-full);
}

input[type=range]:focus {
    outline: none;
}

/* Checkboxes */
input[type="checkbox"] {
    accent-color: var(--accent-primary);
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* --- Content Area --- */
#content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 18px;
    min-width: 0;
}

#content h2 {
    margin: 0;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.02em;
}

/* Unified Filters Container Bar */
#chartViewSelectorContainer,
#subsectorSelector {
    background: var(--bg-card);
    padding: 10px 12px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-hover);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition-smooth);
}

#chartViewSelectorContainer:hover,
#subsectorSelector:hover {
    box-shadow: var(--shadow-lg);
}

#chartViewSelectorContainer label,
#subsectorSelector label {
    margin: 0;
    white-space: nowrap;
    font-size: 0.7rem;
    color: var(--text-muted);
}

#chartViewSelectorContainer select,
#subsectorSelector select {
    flex-grow: 1;
    max-width: 320px;
    height: 34px;
    padding: 0 10px;
    background: var(--bg-input);
    border: 1px solid var(--border-hover);
    border-radius: 0;
    font-weight: 500;
    color: var(--text-main);
}

#chartViewSelectorContainer select:focus,
#subsectorSelector select:focus {
    background: var(--bg-card);
    border-color: var(--accent-primary);
}

/* --- Chart Grids & Boxes --- */
.chart-section-heading {
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.01em;
}

.chart-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 24px;
}

.chart-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 18px;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    height: 430px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.chart-box:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    border-color: var(--border-hover);
}

.chart-box h3 {
    margin: 0 0 16px 0;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

/* For full width charts (like Sankey or Emissions) */
.chart-box.full-width {
    grid-column: 1 / -1;
    height: 500px;
}

.chart-container,
.chart-box canvas {
    flex-grow: 1;
    width: 100%;
    min-height: 0;
}

/* --- Sankey Specifics --- */
#sankeyControls {
    background: var(--bg-card);
    padding: 12px 14px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 24px;
}

#sankeyChart {
    width: 100%;
    height: 720px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 16px;
    transition: var(--transition-smooth);
}

#sankeyChart:hover {
    box-shadow: var(--shadow-hover);
}

/* --- Visual Editor --- */
.visual-editor-container {
    margin-top: 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
}

.canvas-wrapper {
    width: 100%;
    height: 130px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px dashed var(--border-hover);
    margin-bottom: 12px;
    cursor: crosshair;
}

.editor-controls label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4px;
    font-size: 0.66rem;
    color: var(--text-muted);
}

/* --- Footer --- */
footer {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: 4rem;
    border-top: 1px solid var(--border-color);
}

footer strong {
    color: var(--text-main);
}

/* --- Utilities --- */
.hidden {
    display: none !important;
}

/* --- Responsive --- */
@media screen and (max-width: 1200px) {
    .chart-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
}

@media screen and (max-width: 900px) {
    .sim-container {
        flex-direction: column;
    }

    #sidebar {
        width: 100%;
        flex: none;
        max-height: none;
        position: static;
    }

    .chart-grid {
        grid-template-columns: 1fr;
    }
}

/* --- Sankey Transitions --- */
.sankey-node,
.sankey-link {
    transition: opacity var(--transition-smooth), stroke-width var(--transition-fast);
}

.sankey-node:hover {
    cursor: pointer;
}

.sankey-link:hover {
    cursor: pointer;
}