/* Orbital Watch - static dashboard styling.
 *
 * Theme-aware: the OS preference is the default signal, and an explicit
 * data-theme stamp on :root wins in both directions.
 *
 * Status colours (good / warning / serious / critical) are reserved for source
 * health and geomagnetic state and are never reused as decoration. They always
 * ship alongside a text label and a shape glyph, so state is never carried by
 * colour alone.
 *
 * The two themes carry *different* status steps rather than one shared set.
 * The vivid steps that read well on the dark surface fall far below WCAG AA on
 * the light one -- amber at 1.79:1 is effectively invisible -- and light is the
 * default for anyone whose OS is not in dark mode. Badge text is 0.75rem, so
 * the 4.5:1 threshold applies, not the large-text 3:1. Each theme therefore
 * gets steps chosen for its own surface.
 */

:root {
  color-scheme: light;

  --surface-1: #fcfcfb;
  --page: #f9f9f7;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #66655f;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.1);

  /* Light-surface status ramp: darkened for contrast against #fcfcfb. */
  --status-good: #0a7a0a;
  --status-warning: #8a5b00;
  --status-serious: #a8451c;
  --status-critical: #b32222;

  /* Kp band fills. Kp is an ORDERED scale, so these are stepped for
     monotonically decreasing lightness (quiet lightest, severe darkest) on
     top of the conventional green/amber/red hues. Hue alone cannot carry
     this: adjacent bands measure ΔE 8.1 unsimulated and as little as 0.7
     under protanopia. Lightness ordering means the severity ranking survives
     any colour vision, and bar height carries the actual magnitude. */
  --fill-good: #4fae4f;
  --fill-warning: #b87a00;
  --fill-serious: #c0392b;
  --fill-critical: #8c1d15;

  --sans: system-ui, -apple-system, "Segoe UI", sans-serif;

  --radius: 10px;
  --gap: 1rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --surface-1: #1a1a19;
    --page: #0d0d0d;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #a3a199;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.1);
    --status-good: #35c635;
    --status-warning: #fab219;
    --status-serious: #ec835a;
    --status-critical: #f07b7b;
    --fill-good: #279227;
    --fill-warning: #c08a10;
    --fill-serious: #f07a4a;
    --fill-critical: #ffb3b3;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --surface-1: #1a1a19;
  --page: #0d0d0d;
  --text-primary: #ffffff;
  --text-secondary: #c3c2b7;
  --text-muted: #a3a199;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.1);
  --status-good: #35c635;
  --status-warning: #fab219;
  --status-serious: #ec835a;
  --status-critical: #f07b7b;
  --fill-good: #279227;
  --fill-warning: #c08a10;
  --fill-serious: #f07a4a;
  --fill-critical: #ffb3b3;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background: var(--page);
  color: var(--text-primary);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

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

.masthead {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.masthead h1 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.masthead .sub {
  margin: 0.15rem 0 0;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.masthead-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

#theme-toggle {
  background: var(--surface-1);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.35rem 0.7rem;
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
}

#theme-toggle:hover {
  color: var(--text-primary);
}

/* ------------------------------------------------------------- structure */

section {
  margin-top: 1.75rem;
}

h2 {
  margin: 0 0 0.15rem;
  font-size: 1rem;
  font-weight: 620;
  letter-spacing: -0.005em;
}

.section-note {
  margin: 0 0 0.75rem;
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}

.grid {
  display: grid;
  gap: var(--gap);
}

.grid-tiles {
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

/* ------------------------------------------------------------ stat tiles */

.tile .label {
  color: var(--text-secondary);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.tile .value {
  font-size: 1.9rem;
  font-weight: 600;
  line-height: 1.15;
  margin-top: 0.3rem;
}

.tile .value .unit {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-left: 0.15rem;
}

.tile .meta {
  margin-top: 0.35rem;
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* Provenance: every number says where it came from and how old it is. */
.provenance {
  color: var(--text-muted);
  font-size: 0.72rem;
  margin-top: 0.25rem;
}

/* ---------------------------------------------------------------- status */

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* The glyph is a shape as well as a colour, so the state survives greyscale,
 * colour-blindness, and forced-colors mode. The text label is always present. */
.status .glyph {
  font-size: 0.9em;
  line-height: 1;
}

.status-fresh {
  color: var(--status-good);
}
.status-stale {
  color: var(--status-serious);
}
/* Geomagnetic "elevated" -- warning tier, distinct from the health scale. */
.status-elevated {
  color: var(--status-warning);
}
.status-failed {
  color: var(--status-critical);
}
.status-unknown {
  color: var(--text-muted);
}

/* --------------------------------------------------------------- banners */

.banner {
  border: 1px solid var(--border);
  border-left-width: 4px;
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  background: var(--surface-1);
}

.banner h3 {
  margin: 0 0 0.3rem;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.banner p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.87rem;
}

.banner ul {
  margin: 0.6rem 0 0;
  padding-left: 1.1rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.banner li {
  margin-bottom: 0.2rem;
}

.banner-quiet {
  border-left-color: var(--status-good);
}
.banner-elevated {
  border-left-color: var(--status-warning);
}
.banner-storm {
  border-left-color: var(--status-critical);
}
.banner-unknown {
  border-left-color: var(--text-muted);
}

/* ---------------------------------------------------------------- tables */

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

thead th {
  text-align: left;
  font-weight: 600;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  padding: 0 0.6rem 0.45rem;
  border-bottom: 1px solid var(--grid);
  white-space: nowrap;
}

tbody td {
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--grid);
  white-space: nowrap;
}

tbody tr:last-child td {
  border-bottom: none;
}

.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.name {
  font-weight: 550;
}

.dim {
  color: var(--text-muted);
}

.group-tag {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.05rem 0.4rem;
}

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

.chart-wrap {
  overflow-x: auto;
}

svg {
  display: block;
  max-width: 100%;
}

.chart-caption {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-top: 0.4rem;
}

/* ------------------------------------------------------------ health rows */

.health-row {
  display: grid;
  grid-template-columns: minmax(180px, 1.4fr) auto minmax(200px, 2fr);
  gap: 0.6rem 1rem;
  align-items: start;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--grid);
}

.health-row:last-child {
  border-bottom: none;
}

.health-name {
  font-weight: 550;
  font-size: 0.87rem;
}

.health-url {
  color: var(--text-muted);
  font-size: 0.72rem;
  word-break: break-all;
}

.health-detail {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.health-when {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
}

.thresholds {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--grid);
}

/* ------------------------------------------------------------- empty/err */

.empty {
  color: var(--text-secondary);
  font-size: 0.87rem;
  padding: 0.75rem 0;
}

.error-box {
  border-left: 4px solid var(--status-critical);
}

footer {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.78rem;
}

footer a {
  color: var(--text-secondary);
}

@media (max-width: 620px) {
  .health-row {
    grid-template-columns: 1fr;
  }
  .tile .value {
    font-size: 1.6rem;
  }
}


/* -------------------------------------------------------- added elements */

.chart-card {
  margin-top: 1rem;
}

/* The Kp chart scrolls rather than shrinks on narrow screens. Letterboxing an
 * 896x220 viewBox into a ~288px phone column renders the 10px axis labels at
 * roughly 3px, which is less usable than a horizontal scroll. */
.chart-wrap svg {
  max-width: none;
}

.banner .why {
  margin-top: 0.7rem;
}

.banner .why summary {
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.banner .why p {
  margin-top: 0.5rem;
}

/* Available to screen readers, removed from the visual layout. Used for the
 * table captions, which name each table without adding visible chrome. */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* The scroll regions are focusable so they can be scrolled by keyboard, which
 * means they need a visible focus ring. */
:focus-visible {
  outline: 2px solid var(--status-good);
  outline-offset: 2px;
  border-radius: 4px;
}

.table-scroll:focus-visible,
.chart-wrap:focus-visible {
  outline-offset: -2px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}