/* ------------------------------------------------------------------
   ISS Orbital Tracker — Styles
   Aesthetic: deep space, phosphor cyan, editorial-meets-instrumentation
   ------------------------------------------------------------------ */

:root {
  /* Surfaces */
  --void: #04060a;
  --void-deep: #020305;
  --surface: rgba(255, 255, 255, 0.05);
  --surface-strong: rgba(255, 255, 255, 0.08);
  --hairline: rgba(255, 255, 255, 0.16);
  --hairline-strong: rgba(255, 255, 255, 0.26);

  /* Text */
  --ink: #f6f8fb;
  --ink-soft: #d8dde4;
  --ink-mute: #a4abb6;
  --ink-faint: #7d8593;

  /* Accents */
  --signal: #5cf2ff;          /* phosphor cyan */
  --signal-glow: rgba(92, 242, 255, 0.55);
  --signal-soft: rgba(92, 242, 255, 0.18);
  --warn: #ffb073;            /* warm amber */
  --live: #ff4f6e;            /* live red */
  --live-glow: rgba(255, 79, 110, 0.6);

  /* Type */
  --display: "Instrument Serif", "Cormorant Garamond", "Iowan Old Style", Georgia, serif;
  --ui: "Manrope", "Inter Tight", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "IBM Plex Mono", "SF Mono", ui-monospace, monospace;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

/* ---------- Reset ---------- */

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

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: var(--void);
  color: var(--ink);
  font-family: var(--ui);
  font-feature-settings: "ss01", "cv11", "tnum";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow: hidden;
}

body {
  /* Layered atmosphere behind canvas */
  background:
    radial-gradient(ellipse 90% 60% at 50% 110%, rgba(92, 242, 255, 0.08), transparent 60%),
    radial-gradient(ellipse 60% 50% at 50% -10%, rgba(180, 140, 255, 0.06), transparent 60%),
    var(--void);
  min-height: 100dvh;
}

a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--hairline-strong);
  transition: color 200ms var(--ease-out), border-color 200ms var(--ease-out);
}
a:hover { color: var(--signal); border-bottom-color: var(--signal); }
a:focus-visible {
  outline: 1px solid var(--signal);
  outline-offset: 3px;
  border-radius: 2px;
}

button { font: inherit; color: inherit; }
::selection { background: var(--signal-soft); color: var(--ink); }

/* ---------- Atmosphere ---------- */

.grain {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 50;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240' viewBox='0 0 240 240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' seed='3'/><feColorMatrix values='0 0 0 0 0.7  0 0 0 0 0.85  0 0 0 0 1  0 0 0 0.7 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-size: 240px 240px;
}

.vignette {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 49;
  background: radial-gradient(ellipse 80% 70% at 50% 50%, transparent 50%, rgba(0,0,0,0.55) 100%);
}

/* ---------- Canvas ---------- */

#globe {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100dvh;
  display: block;
  z-index: 0;
  cursor: grab;
  touch-action: none;
}
#globe:active { cursor: grabbing; }

/* ---------- Skip link ---------- */

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 100;
  padding: 8px 14px;
  background: var(--void-deep);
  border: 1px solid var(--hairline-strong);
  font: 500 12px/1 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.skip-link:focus { top: 16px; }

/* ---------- Header ---------- */

.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 10;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 28px;
  pointer-events: none;
}

.header > * { pointer-events: auto; }

.header__brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
  animation: fade-in 900ms 100ms var(--ease-out) both;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 11px 6px 9px;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  font: 600 10px/1 var(--mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  width: fit-content;
}

.status__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ink-mute);
  position: relative;
  flex: none;
}
.status__dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: inherit;
  opacity: 0.5;
  filter: blur(4px);
}
.status[data-status="live"] .status__dot { background: var(--live); }
.status[data-status="live"] .status__dot::after { background: var(--live); animation: pulse 1.6s ease-in-out infinite; }
.status[data-status="live"] { color: var(--ink); }
.status[data-status="error"] .status__dot { background: var(--warn); }
.status[data-status="connecting"] .status__dot { background: var(--signal); animation: dim 1.2s ease-in-out infinite; }

.brand {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-weight: 400;
  font-size: clamp(22px, 2.6vw, 34px);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.brand__mark {
  font: 600 0.55em/1 var(--mono);
  letter-spacing: 0.22em;
  padding: 7px 9px 6px;
  border: 1px solid var(--hairline-strong);
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: var(--signal);
  text-shadow: 0 0 18px var(--signal-glow);
}

.brand__sep { color: var(--ink-faint); font-weight: 300; }

.brand__name {
  font-family: var(--display);
  font-style: normal;
  font-weight: 400;
}
.brand__name em {
  font-style: italic;
  color: var(--ink-soft);
}

.header__meta {
  animation: fade-in 900ms 200ms var(--ease-out) both;
}

.clock {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid var(--hairline);
}
.clock__label {
  font: 600 10px/1 var(--mono);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.clock__value {
  font: 500 16px/1 var(--mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  color: var(--ink);
}

/* ---------- HUD panels ---------- */

.hud {
  position: fixed;
  left: 0; right: 0;
  bottom: 56px;
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding: 0 28px;
  pointer-events: none;
}

.panel {
  pointer-events: auto;
  position: relative;
  padding: 16px 20px 18px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.015)),
    rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(28px) saturate(140%);
  -webkit-backdrop-filter: blur(28px) saturate(140%);
  border: 1px solid var(--hairline);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 24px 60px -30px rgba(0, 0, 0, 0.85);
  animation: rise 1100ms var(--ease-out) both;
}
.panel:nth-of-type(1) { animation-delay: 350ms; }
.panel:nth-of-type(2) { animation-delay: 450ms; }
.panel:nth-of-type(3) { animation-delay: 550ms; }

/* Corner ticks — subtle bracket detail */
.panel::before,
.panel::after {
  content: "";
  position: absolute;
  width: 10px; height: 10px;
  border: 1px solid var(--signal);
  opacity: 0.55;
}
.panel::before {
  top: -1px; left: -1px;
  border-right: none; border-bottom: none;
}
.panel::after {
  bottom: -1px; right: -1px;
  border-left: none; border-top: none;
}

.panel__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--hairline);
}

.panel__bracket {
  display: none; /* using ::before/::after corner ticks instead */
}

.panel__title {
  margin: 0;
  font: 400 14px/1 var(--display);
  font-style: italic;
  letter-spacing: 0.005em;
  color: var(--ink);
  flex: 1;
}

.panel__id {
  font: 600 9px/1 var(--mono);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 4px 8px;
  border: 1px solid var(--hairline);
  border-radius: 2px;
}

.metrics {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px 18px;
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.metric dt {
  font: 600 10px/1 var(--mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.metric dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
  min-width: 0;
}

.metric__value {
  font: 500 22px/1 var(--mono);
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  letter-spacing: -0.005em;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.metric__value.is-flash {
  animation: flash 600ms var(--ease-out);
}

.metric__unit {
  font: 500 10px/1 var(--mono);
  letter-spacing: 0.06em;
  color: var(--ink-mute);
  text-transform: lowercase;
}

/* ---------- Crew ---------- */

.crew {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
}

.crew__count {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-right: 16px;
  border-right: 1px dashed var(--hairline);
  min-width: 56px;
}

.crew__num {
  font: 500 32px/1 var(--mono);
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.crew__label {
  font: 600 9px/1 var(--mono);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.crew__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 5px;
  max-height: 92px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--hairline-strong) transparent;
}
.crew__list::-webkit-scrollbar { width: 4px; }
.crew__list::-webkit-scrollbar-track { background: transparent; }
.crew__list::-webkit-scrollbar-thumb { background: var(--hairline-strong); border-radius: 2px; }

.crew__list li {
  font: 400 12px/1.3 var(--ui);
  color: var(--ink-soft);
  letter-spacing: 0.005em;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.crew__list li::before {
  content: "";
  flex: none;
  width: 4px; height: 4px;
  background: var(--signal);
  box-shadow: 0 0 6px var(--signal-glow);
  margin-top: 5px;
}

.crew__placeholder {
  color: var(--ink-mute) !important;
  font-style: italic;
}
.crew__placeholder::before { display: none !important; }

.crew__list.is-error li {
  color: var(--ink-mute);
  font-style: italic;
}
.crew__list.is-error li::before { background: var(--warn); box-shadow: 0 0 6px rgba(255, 176, 115, 0.4); }

/* ---------- Live stream ---------- */

.live {
  position: fixed;
  top: 96px;
  right: 28px;
  z-index: 10;
  width: 320px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.015)),
    rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(28px) saturate(140%);
  -webkit-backdrop-filter: blur(28px) saturate(140%);
  border: 1px solid var(--hairline);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 24px 60px -30px rgba(0, 0, 0, 0.85);
  animation: rise 1100ms 600ms var(--ease-out) both;
}

.live::before,
.live::after {
  content: "";
  position: absolute;
  width: 10px; height: 10px;
  border: 1px solid var(--signal);
  opacity: 0.55;
}
.live::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.live::after  { bottom: -1px; right: -1px; border-left: none; border-top: none; }

.live__head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px 10px 12px;
  border-bottom: 1px dashed var(--hairline);
}

.live__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--live);
  flex: none;
  position: relative;
}
.live__dot::after {
  content: "";
  position: absolute; inset: -4px;
  border-radius: 50%;
  background: var(--live);
  filter: blur(4px);
  animation: pulse 1.6s ease-in-out infinite;
}

.live__title {
  margin: 0;
  font: 400 14px/1 var(--display);
  font-style: italic;
  flex: 1;
  color: var(--ink);
}

.live__id {
  font: 600 9px/1 var(--mono);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.live__viewport {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #000;
}

.live__viewport iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.live__poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 20px;
  background:
    radial-gradient(ellipse 80% 70% at 50% 40%, rgba(36, 86, 130, 0.55), transparent 70%),
    radial-gradient(ellipse 60% 60% at 30% 80%, rgba(24, 50, 90, 0.4), transparent 70%),
    #04060a;
  border: 0;
  cursor: pointer;
  color: var(--ink);
  text-align: center;
  transition: filter 200ms var(--ease-out);
}
.live__poster:hover { filter: brightness(1.15); }
.live__poster:focus-visible {
  outline: 1px solid var(--signal);
  outline-offset: -3px;
}

.live__play {
  width: 40px;
  height: 40px;
  color: var(--ink);
  filter: drop-shadow(0 0 12px var(--signal-glow));
  transition: transform 200ms var(--ease-out);
}
.live__poster:hover .live__play { transform: scale(1.08); }

.live__caption {
  font: 400 14px/1.2 var(--display);
  font-style: italic;
  color: var(--ink);
}

.live__sub {
  font: 500 9px/1.4 var(--mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* Hide on tablet/mobile to keep first paint light + avoid layout chaos */
@media (max-width: 1100px) {
  .live { display: none; }
}

/* ---------- Cue ---------- */

.cue {
  position: fixed;
  bottom: 220px;
  right: 28px;
  z-index: 5;
  display: none;
  align-items: center;
  gap: 10px;
  font: 500 10px/1 var(--mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  animation: fade-in 1500ms 1500ms var(--ease-out) both;
}
.cue__line {
  width: 36px;
  height: 1px;
  background: var(--hairline-strong);
}

@media (hover: hover) and (min-width: 900px) {
  .cue { display: inline-flex; }
}

/* ---------- Footer ---------- */

.footer {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 10;
  padding: 16px 28px 18px;
  text-align: center;
  pointer-events: none;
}
.footer p { pointer-events: auto; display: inline; }

.footer__credit {
  margin: 0;
  font: 400 12px/1.6 var(--ui);
  letter-spacing: 0.01em;
  color: var(--ink-soft);
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.6);
}
.footer__credit a {
  color: var(--ink);
  border-bottom-color: var(--hairline-strong);
}
.footer__sep {
  margin: 0 10px;
  color: var(--ink-faint);
}

/* ---------- Noscript ---------- */

.noscript {
  position: fixed; inset: 0;
  display: grid;
  place-items: center;
  background: var(--void);
  z-index: 100;
  padding: 20px;
  text-align: center;
}

/* ---------- Animations ---------- */

@keyframes fade-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.4; }
  50% { transform: scale(2.2); opacity: 0; }
}

@keyframes dim {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

@keyframes flash {
  0% { color: var(--signal); text-shadow: 0 0 12px var(--signal-glow); }
  100% { color: var(--ink); text-shadow: none; }
}

/* ---------- Responsive ---------- */

/* Tablet — collapse to 2 columns; crew slides under, taking full width */
@media (max-width: 1024px) {
  .hud {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: auto;
  }
  .panel--crew { grid-column: 1 / -1; }
  .crew__list { max-height: 60px; }
}

@media (max-width: 720px) {
  .header {
    padding: 16px 18px;
    flex-direction: column;
    gap: 12px;
  }
  .header__meta { align-self: flex-end; }

  .brand { font-size: 22px; }

  .hud {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 0 16px;
    bottom: 64px;
  }
  .panel--crew { grid-column: auto; }

  .panel { padding: 14px 16px 16px; }
  .metrics { gap: 12px 14px; }
  .metric__value { font-size: 18px; }
  .crew__num { font-size: 26px; }
  .crew__list { max-height: 78px; }

  .footer { padding: 14px 16px; }
  .footer__credit { font-size: 11px; }
  .footer__sep { display: block; height: 0; margin: 4px 0; }
}

@media (max-width: 420px) {
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric:nth-child(3) { grid-column: 1 / -1; }
}

/* Tall and narrow — keep panels at bottom but let canvas breathe */
@media (max-height: 600px) {
  .hud { bottom: 48px; }
  .footer { padding: 10px 18px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}