/*!
 * WU Graphs 2 - stylesheet (mobile first)
 * GNU General Public License v3 or later.
 *
 * Colours come from CSS custom properties set on <body> from config.php:
 * --wug-bg, --wug-text, --wug-accent.
 */

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

.wug {
  --wug-surface: #ffffff;
  --wug-muted: #64748b;
  --wug-border: #e2e8f0;
  --wug-soft: #eef2f6;
  --wug-radius: 14px;
  --wug-shadow: 0 1px 2px rgba(15, 23, 42, .05), 0 6px 20px rgba(15, 23, 42, .06);
  --wug-accent-soft: color-mix(in srgb, var(--wug-accent) 12%, transparent);
  margin: 0;
  background: var(--wug-bg);
  color: var(--wug-text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

.wug a {
  color: inherit;
}

.wug-app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 12px 24px;
  display: grid;
  gap: 14px;
}

.wug-embed .wug-app {
  padding: 8px 12px 12px;
}

/* ------------------------------------------------------------ header */

.wug-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.wug-header h1 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.2;
}

.wug-station {
  margin: 2px 0 0;
  color: var(--wug-muted);
  font-size: .9rem;
}

/* ------------------------------------------------------------ period selector (segmented) */

.wug-periods {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--wug-soft);
  border-radius: 12px;
}

.wug-periods a {
  flex: 1 1 0;
  min-width: 0;
  padding: 8px 6px;
  border-radius: 9px;
  text-align: center;
  text-decoration: none;
  font-weight: 600;
  font-size: .9rem;
  color: var(--wug-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background-color .15s, color .15s;
}

.wug-periods a:hover {
  color: var(--wug-text);
}

.wug-periods a.is-active {
  background: var(--wug-surface);
  color: var(--wug-accent);
  box-shadow: 0 1px 3px rgba(15, 23, 42, .12);
}

/* ------------------------------------------------------------ variable chips */

/* All the variables are always visible: the chips wrap onto several lines. */
.wug-vars {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.wug-vars a {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 11px 6px 9px;
  border: 1px solid var(--wug-border);
  border-radius: 999px;
  background: var(--wug-surface);
  text-decoration: none;
  font-size: .82rem;
  font-weight: 500;
  white-space: nowrap;
  transition: border-color .15s, background-color .15s, color .15s;
}

.wug-vars a:hover {
  border-color: var(--wug-accent);
}

.wug-vars a.is-active {
  background: var(--wug-accent);
  border-color: var(--wug-accent);
  color: #fff;
}

/* ------------------------------------------------------------ card */

.wug-card {
  background: var(--wug-surface);
  border: 1px solid var(--wug-border);
  border-radius: var(--wug-radius);
  box-shadow: var(--wug-shadow);
  padding: 14px 10px 8px;
  min-width: 0;
}

/* mobile: [title][refresh] / [date navigation] */
.wug-card-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas: "title refresh" "tools tools";
  align-items: center;
  gap: 10px;
  padding: 0 4px 6px;
}

.wug-title {
  grid-area: title;
  min-width: 0;
}

.wug-refresh {
  grid-area: refresh;
}

.wug-toolbar {
  grid-area: tools;
}

.wug-title h2 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.25;
}

.wug-title p {
  margin: 2px 0 0;
  color: var(--wug-muted);
  font-size: .9rem;
}

.wug-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}

.wug-datepick {
  position: relative;
  display: flex;
  gap: 6px;
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
}

/* ------------------------------------------------------------ calendar (day view) */

.wug-datebtn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 0 10px 0 12px;
  cursor: pointer;
  white-space: nowrap;
  text-align: left;
}

.wug-datebtn:hover,
.wug-datebtn[aria-expanded="true"] {
  border-color: var(--wug-accent);
}

.wug-datebtn .wug-icon {
  color: var(--wug-muted);
}

.wug-cal {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 100;
  width: 292px;
  max-width: calc(100vw - 24px);
  padding: 10px;
  background: var(--wug-surface);
  border: 1px solid var(--wug-border);
  border-radius: var(--wug-radius);
  box-shadow: 0 10px 30px rgba(15, 23, 42, .18);
}

.wug-cal[hidden] {
  display: none;
}

.wug-cal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4px;
  margin-bottom: 6px;
}

.wug-cal-nav,
.wug-cal-title,
.wug-cal-day,
.wug-cal-month {
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
  border-radius: 8px;
}

.wug-cal-nav {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.wug-cal-title {
  flex: 1;
  height: 34px;
  font-weight: 700;
  text-align: center;
}

.wug-cal-year {
  line-height: 34px;
  cursor: default;
}

.wug-cal-nav:hover:not(:disabled),
button.wug-cal-title:hover,
.wug-cal-day:hover:not(:disabled):not(.is-selected),
.wug-cal-month:hover:not(:disabled):not(.is-selected) {
  background: var(--wug-accent-soft);
  color: var(--wug-accent);
}

.wug-cal-nav:disabled,
.wug-cal-day:disabled,
.wug-cal-month:disabled {
  opacity: .3;
  cursor: default;
}

.wug-cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.wug-cal-wd {
  padding: 4px 0;
  text-align: center;
  font-size: .72rem;
  font-weight: 600;
  color: var(--wug-muted);
  text-transform: capitalize;
}

.wug-cal-day {
  height: 36px;
  font-size: .88rem;
}

.wug-cal-day.is-other {
  color: var(--wug-muted);
  opacity: .55;
}

.wug-cal-day.is-today {
  box-shadow: inset 0 0 0 1.5px var(--wug-accent);
}

.wug-cal-day.is-selected,
.wug-cal-month.is-selected {
  background: var(--wug-accent);
  color: #fff;
  font-weight: 700;
  opacity: 1;
}

.wug-cal-months {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}

.wug-cal-month {
  height: 42px;
  font-size: .88rem;
}

.wug-cal button:focus-visible {
  outline: 2px solid var(--wug-accent);
  outline-offset: 1px;
}

/* ------------------------------------------------------------ controls */

.wug-btn,
.wug-input,
.wug-select {
  height: 38px;
  border: 1px solid var(--wug-border);
  border-radius: 10px;
  background: var(--wug-surface);
  color: var(--wug-text);
  font: inherit;
  font-size: .92rem;
}

.wug-input,
.wug-select {
  padding: 0 10px;
  min-width: 0;
  flex: 1 1 auto;
}

.wug-select {
  padding-right: 6px;
}

.wug-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  cursor: pointer;
  text-decoration: none;
  transition: background-color .15s, border-color .15s, color .15s;
}

.wug-btn-icon {
  width: 38px;
  padding: 0;
  flex: 0 0 auto;
}

a.wug-btn:hover,
button.wug-btn:hover {
  border-color: var(--wug-accent);
  color: var(--wug-accent);
  background: var(--wug-accent-soft);
}

.wug-btn[aria-disabled="true"] {
  opacity: .35;
  cursor: default;
}

.wug-icon {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: 0 0 auto;
}

.wug a:focus-visible,
.wug-btn:focus-visible,
.wug-input:focus-visible,
.wug-select:focus-visible,
.wug-info summary:focus-visible {
  outline: 2px solid var(--wug-accent);
  outline-offset: 2px;
}

/* ------------------------------------------------------------ chart */

.wug-chart {
  width: 100%;
  height: clamp(280px, 62vh, var(--wug-chart-h, 420px));
  min-width: 0;
}

/* In an iframe the "viewport" is the iframe itself, whose height follows the
   content: the chart height depends on the width instead (no feedback loop). */
.wug-embed .wug-chart {
  height: clamp(260px, 75vw, var(--wug-chart-h, 420px));
}

.wug-alert {
  margin: 4px 4px 8px;
  padding: 10px 12px;
  border-radius: 10px;
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: #9a3412;
  font-size: .9rem;
}

.wug-alert p {
  margin: 0;
}

.wug-nojs {
  padding: 40px 16px;
  text-align: center;
  color: #b91c1c;
  font-weight: 600;
}

/* ------------------------------------------------------------ info + footer */

.wug-info {
  background: var(--wug-surface);
  border: 1px solid var(--wug-border);
  border-radius: var(--wug-radius);
  padding: 0 14px;
  font-size: .9rem;
}

.wug-info summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.wug-info summary::-webkit-details-marker {
  display: none;
}

.wug-info summary::after {
  content: "";
  margin-left: auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform .15s;
}

.wug-info[open] summary::after {
  transform: rotate(-135deg);
}

.wug-info ul {
  margin: 0 0 14px;
  padding-left: 20px;
  color: var(--wug-muted);
}

.wug-info li + li {
  margin-top: 4px;
}

.wug-footer {
  text-align: center;
  font-size: .78rem;
  color: var(--wug-muted);
}

.wug-footer a {
  color: inherit;
}

/* ------------------------------------------------------------ tablet / desktop */

@media (max-width: 380px) {
  .wug-periods a {
    font-size: .84rem;
    padding: 8px 2px;
  }

  .wug-select {
    padding: 0 4px;
    font-size: .88rem;
  }
}

@media (min-width: 640px) {
  .wug-app {
    padding: 24px 20px 32px;
    gap: 16px;
  }

  .wug-header h1 {
    font-size: 1.6rem;
  }

  .wug-vars {
    gap: 8px;
  }

  .wug-vars a {
    gap: 6px;
    padding: 7px 14px 7px 11px;
    font-size: .88rem;
  }

  .wug-card {
    padding: 18px 16px 10px;
  }

  .wug-card-head {
    grid-template-columns: minmax(0, 1fr) auto auto;
    grid-template-areas: "title tools refresh";
  }

  .wug-datepick {
    flex: 0 1 auto;
  }

  .wug-cal {
    left: auto;
    right: 0;
  }

  .wug-input {
    flex: 0 0 auto;
  }
}

@media (min-width: 900px) {
  .wug-periods {
    max-width: 520px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .wug * {
    transition: none !important;
  }
}

@media print {
  .wug-periods,
  .wug-vars,
  .wug-toolbar,
  .wug-info {
    display: none;
  }

  .wug-card {
    box-shadow: none;
    border: 0;
  }
}