/* ========================================
   TRANSPORT USAGE CARD (LINE + SETTINGS + PIES)
   ======================================== */

/* Outer card wrapping line chart, settings and pies */
.transport-usage-card {
    margin: 32px 0;
    padding: 16px 20px;
    border-radius: 16px;

    background: rgba(15, 15, 15, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45);
}

/* ========================================
   TOP ROW: LINE CHART + SETTINGS
   ======================================== */

.transport-usage-card__top {
    display: flex;
    gap: 20px;
    align-items: stretch;
    margin-bottom: 20px;
}

/* Line chart container */
.transport-usage-card__line {
    position: relative;
    flex: 1 1 auto;
    min-height: 320px;

    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(0, 0, 0, 0.4);

    padding: 24px 4px 0 4px; /* space for the title at the top */
}

/* SVG full-size inside the line chart box */
.transport-usage-card__line svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* Small title inside the line chart (top-right) */
.transport-usage-line__title {
    position: absolute;
    top: 6px;
    right: 10px;
    font-family: "ConsolasBold", monospace;
    font-size: 18px;
    color: #f2f3f4;
    opacity: 0.9;
    pointer-events: none;
}

/* Settings panel on the right */
.transport-usage-card__settings {
    flex: 0 0 260px;
    font-family: var(
        --font-sans,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        sans-serif
    );
    color: #f2f3f4;
}

.transport-usage-card__settings fieldset {
    height: 100%;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 4px 14px 4px;

    /* Slightly shorter than the chart for visual balance */
    margin: -10px 0;

    background: rgba(0, 0, 0, 0.55);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.transport-usage-card__settings legend {
    font-family: "ConsolasBold", monospace;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0 4px;
}

.transport-usage-card__note {
    margin: 0;
    font-size: 13px;
    line-height: 1.5;
    color: rgba(242, 243, 244, 0.9);
}

.transport-usage-card__note + .transport-usage-card__note {
    margin-top: 6px;
}

/* Generic field block: label + input */
.transport-usage-card__field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 14px;
}

/* Label text */
.transport-usage-card__field label,
.transport-usage-card__field-title {
    font-size: 13px;
    opacity: 0.9;
}

/* Inputs */
.transport-usage-card__field input[type="date"],
.transport-usage-card__field select {
    padding: 4px 6px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    background: rgba(10, 10, 10, 0.9);
    color: #f2f3f4;
    font-size: 13px;
}

/* Bar chart styling (used in line container) */
.transport-usage-bar__bar {
    opacity: 0.9;
    transition:
        opacity 0.15s ease,
        transform 0.15s ease;
}

.transport-usage-bar__bar:hover {
    opacity: 1;
    transform: translateY(-2px);
}

.transport-usage-bar__label {
    fill: #f2f3f4;
    font-size: 20px;
    font-weight: 600;
    text-anchor: middle;
    pointer-events: none;
}

.transport-usage-axis-label {
    fill: #f2f3f4;
    font-size: 16px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.transport-usage-mini__bar {
    opacity: 0.9;
}

.transport-usage-mini__bar:hover {
    opacity: 1;
}

/* Color theme radio options */
.transport-usage-card__color-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.transport-usage-card__color-option {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    cursor: pointer;
}

.transport-usage-card__color-option input {
    cursor: pointer;
}

/* Small color swatch */
.transport-usage-card__color-swatch {
    width: 14px;
    height: 14px;
    border-radius: 999px;
    border: 1px solid rgba(0, 0, 0, 0.7);
}

/* Example color themes */
.transport-usage-card__color-swatch--green {
    background: #1ad15b;
}
.transport-usage-card__color-swatch--blue {
    background: #00e5ff;
}
.transport-usage-card__color-swatch--magenta {
    background: #ff3bff;
}

/* ========================================
   BOTTOM ROW: FOUR PIE CHARTS
   ======================================== */

.transport-usage-card__pies {
    margin-top: 20px;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.transport-usage-card__legend {
    margin-top: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: #f2f3f4;
}

.transport-usage-card__legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.transport-usage-card__legend-swatch {
    width: 12px;
    height: 12px;
    border-radius: 3px;
    background: #f2f3f4;
}

.transport-usage-card__pie-total {
    margin-top: 6px;
    text-align: center;
    font-size: 16px;
    color: rgba(242, 243, 244, 0.85);
}

#chapter-walking .transport-usage-card__pies {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.transport-usage-card__share {
    margin-top: 20px;
}

.transport-usage-card__share-line {
    position: relative;
    min-height: 260px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(0, 0, 0, 0.4);
    padding: 24px 4px 0 4px;
}

.transport-usage-card__share-line svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* Container for one pie + legend */
.transport-usage-card__pie {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

/* Box that contains the pie chart itself */
.transport-usage-card__pie-chart-wrapper {
    position: relative;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(0, 0, 0, 0.5);
    padding: 4px;
}

/* Title inside the pie box, top-right */
.transport-usage-card__pie-title {
    position: absolute;
    top: 6px;
    right: 8px;
    font-family: "ConsolasBold", monospace;
    font-size: 14px;
    color: #f2f3f4;
    opacity: 0.9;
    pointer-events: none;
}

/* Area reserved for the pie SVG - square */
.transport-usage-card__pie-chart {
    width: 100%;
    aspect-ratio: 1 / 1;
}

/* SVG fills the pie chart area */
.transport-usage-card__pie-chart svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* Legend box below each pie */
.transport-usage-card__pie-legend {
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(0, 0, 0, 0.5);
    padding: 6px 8px;
    font-family: var(
        --font-sans,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        sans-serif
    );
    font-size: 11px;
    color: #e0e0e0;
}

/* One legend row */
.transport-usage-card__pie-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 2px;
}

/* Color dot in the legend */
.transport-usage-card__pie-legend-color {
    width: 10px;
    height: 10px;
    border-radius: 999px;
}

/* ========================================
   RESPONSIVE BEHAVIOUR
   ======================================== */

@media (max-width: 1000px) {
    .transport-usage-card__top {
        flex-direction: column;
    }

    .transport-usage-card__settings {
        flex: 0 0 auto;
    }
}

@media (max-width: 700px) {
    .transport-usage-card__pies {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 480px) {
    .transport-usage-card__pies {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   LINE CHART STYLING
   ======================================== */

.transport-usage-line__axis path,
.transport-usage-line__axis line {
    stroke: rgba(255, 255, 255, 0.35);
}

.transport-usage-line__axis text {
    fill: #e0e0e0;
    font-size: 16px;
}

.transport-usage-line__path {
    fill: none;
    stroke: #1ad15b;
    stroke-width: 2;
}

/* ========================================
   PIE TOOLTIP
   ======================================== */

.transport-usage-tooltip,
.walking-collisions-tooltip {
    position: absolute;
    pointer-events: none;
    background: rgba(0, 0, 0, 0.9);
    color: #f2f3f4;
    padding: 6px 8px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    font-size: 11px;
    z-index: 9999;
    opacity: 0;
}