/* ==========================================================================
   SpaceCalc — Planet Weight & Age Calculator
   Dev - Tejendra Bahubali | https://tej.new.tg
   Mobile-first, no frameworks, no build step.
   Sections:
     1. Tokens & reset
     2. Starfield background
     3. Header + language switch
     4. Page layout
     5. Input deck
     6. Report card (PNG export target)
     7. Body cards + CSS planets
     8. Action deck
     9. Footer (mandatory credits)
    10. Toasts
    11. Keyframes
    12. Capture state / reduced motion / print
   ========================================================================== */

/* ---------------------------------- 1. TOKENS ---------------------------------- */
:root {
  --font: "Trebuchet MS", "Segoe UI", "Noto Sans Devanagari", "Nirmala UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;

  --bg-deep: #05040f;
  --bg-mid: #0b0827;
  --bg-high: #150f3c;

  --ink: #f2f1ff;
  --ink-soft: #c3c0e8;
  --muted: #9b98c6;

  --neon-cyan: #4ff5e2;
  --neon-violet: #8b5cff;
  --neon-pink: #ff5ecd;
  --neon-lime: #b6ff5e;
  --neon-amber: #ffd166;

  --panel: rgba(18, 15, 48, 0.86);
  --line: rgba(139, 92, 255, 0.30);
  --line-soft: rgba(255, 255, 255, 0.11);

  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;

  --ring-shadow: 0 24px 60px -40px rgba(79, 245, 226, 0.55);
  --footer-space: 138px; /* keeps content clear of the fixed credits bar */
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(120% 90% at 12% -10%, #221a5e 0%, rgba(34, 26, 94, 0) 55%),
    radial-gradient(100% 80% at 92% 0%, #2a1150 0%, rgba(42, 17, 80, 0) 58%),
    radial-gradient(140% 100% at 50% 120%, #14104a 0%, rgba(20, 16, 74, 0) 62%),
    linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-mid) 46%, var(--bg-deep) 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img,
svg {
  max-width: 100%;
}

button {
  font-family: inherit;
}

:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 10px 16px;
  border-radius: 0 0 12px 0;
  background: var(--neon-cyan);
  color: #05040f;
  font-weight: 800;
  text-decoration: none;
}

.skip-link:focus {
  left: 0;
}

/* ------------------------------- 2. STARFIELD ------------------------------- */
.starfield {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.starfield__layer {
  position: absolute;
  inset: 0;
}

.starfield__glow {
  position: absolute;
  border-radius: 50%;
  opacity: 0.55;
  animation: drift 22s ease-in-out infinite alternate;
}

.starfield__glow--one {
  width: 62vw;
  height: 62vw;
  max-width: 640px;
  max-height: 640px;
  top: -18vw;
  left: -14vw;
  background: radial-gradient(circle, rgba(139, 92, 255, 0.42) 0%, rgba(139, 92, 255, 0) 68%);
}

.starfield__glow--two {
  width: 54vw;
  height: 54vw;
  max-width: 560px;
  max-height: 560px;
  top: 22vh;
  right: -18vw;
  background: radial-gradient(circle, rgba(255, 94, 205, 0.34) 0%, rgba(255, 94, 205, 0) 70%);
  animation-delay: -7s;
}

.starfield__glow--three {
  width: 70vw;
  height: 70vw;
  max-width: 700px;
  max-height: 700px;
  bottom: 2vh;
  left: 18vw;
  background: radial-gradient(circle, rgba(79, 245, 226, 0.20) 0%, rgba(79, 245, 226, 0) 70%);
  animation-delay: -13s;
}

.star {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, #ffffff 0%, rgba(214, 232, 255, 0.85) 42%, rgba(214, 232, 255, 0) 72%);
  animation: twinkle var(--dur, 4s) ease-in-out infinite alternate;
  animation-delay: var(--delay, 0s);
  opacity: var(--op, 0.9);
}

/* --------------------------- 3. HEADER + LANGUAGE --------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 10px clamp(10px, 3vw, 20px);
  background: rgba(6, 5, 22, 0.74);
  border-bottom: 1px solid rgba(139, 92, 255, 0.22);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  max-width: 1080px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
}

.brand__logo {
  font-size: clamp(1.5rem, 6vw, 1.9rem);
  line-height: 1;
  filter: drop-shadow(0 0 10px rgba(79, 245, 226, 0.65));
  animation: floaty 5s ease-in-out infinite;
}

.brand__title {
  margin: 0;
  font-size: clamp(1.15rem, 4.6vw, 1.6rem);
  font-weight: 900;
  letter-spacing: 0.03em;
  color: #ffffff;
  text-shadow: 0 0 18px rgba(79, 245, 226, 0.55), 0 0 42px rgba(139, 92, 255, 0.45);
}

.brand__tagline {
  margin: 2px 0 0;
  font-size: clamp(0.58rem, 2.4vw, 0.68rem);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 7px;
}

/* --- sound on/off toggle --- */
.sound-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(11, 9, 35, 0.78);
  border: 1px solid rgba(79, 245, 226, 0.38);
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.16s ease;
}

.sound-toggle:hover {
  background: rgba(79, 245, 226, 0.12);
  transform: translateY(-1px);
}

.sound-toggle__icon {
  font-size: 0.92rem;
  line-height: 1;
}

.sound-toggle__eq {
  display: inline-flex;
  align-items: flex-end;
  gap: 2px;
  height: 12px;
}

.sound-toggle__eq i {
  display: block;
  width: 2px;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--neon-cyan), var(--neon-violet));
  transform-origin: bottom;
  animation: equalize 1.1s ease-in-out infinite alternate;
}

.sound-toggle__eq i:nth-child(2) {
  animation-delay: -0.35s;
}

.sound-toggle__eq i:nth-child(3) {
  animation-delay: -0.7s;
}

.sound-toggle[aria-pressed="false"] {
  border-color: rgba(255, 255, 255, 0.14);
  opacity: 0.72;
}

.sound-toggle[aria-pressed="false"] .sound-toggle__eq {
  display: none;
}

/* --- background music toggle (🎵) --- */
.music-toggle {
  position: relative;
  overflow: hidden;
  border-color: rgba(255, 94, 205, 0.40);
}

.music-toggle:hover {
  background: rgba(255, 94, 205, 0.14);
}

/* muted 🎵 gets a soft diagonal strike so it reads at a glance */
.music-toggle[aria-pressed="false"]::after {
  content: "";
  position: absolute;
  left: 5px;
  right: 5px;
  top: 50%;
  height: 2px;
  border-radius: 2px;
  background: var(--neon-pink);
  transform: rotate(-32deg);
}

/* gentle pulse while an ambient loop is actually sounding */
.music-toggle.is-playing .sound-toggle__icon {
  animation: musicBob 2.4s ease-in-out infinite;
}

/* --- language switch --- */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 4px;
  border-radius: 999px;
  background: rgba(11, 9, 35, 0.78);
  border: 1px solid rgba(139, 92, 255, 0.40);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.lang-switch__btn {
  border: 0;
  padding: 7px 10px;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.22s ease, color 0.22s ease, transform 0.18s ease;
}

.lang-switch__btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.lang-switch__btn.is-active {
  color: #08061e;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-violet));
  box-shadow: 0 8px 20px -10px var(--neon-cyan);
}

.lang-switch__divider {
  color: rgba(196, 192, 232, 0.45);
  font-size: 0.72rem;
}

/* ------------------------------- 4. LAYOUT ------------------------------- */
.page {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px clamp(10px, 3vw, 20px) var(--footer-space);
}

/* ----------------------------- 5. INPUT DECK ----------------------------- */
.input-deck {
  position: relative;
  padding: clamp(14px, 4vw, 22px);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(26, 22, 68, 0.94) 0%, rgba(11, 9, 34, 0.94) 100%);
  border: 1px solid var(--line);
  box-shadow: var(--ring-shadow), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  overflow: hidden;
}

.input-deck::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-violet), var(--neon-pink));
}

.input-deck__title {
  margin: 0;
  font-size: clamp(1.05rem, 4vw, 1.3rem);
  font-weight: 900;
  letter-spacing: 0.01em;
  color: #fff;
}

.input-deck__subtitle {
  margin: 6px 0 0;
  max-width: 52ch;
  font-size: clamp(0.72rem, 2.9vw, 0.82rem);
  line-height: 1.55;
  color: var(--ink-soft);
}

.stats-form {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.field {
  min-width: 0;
}

.field__label {
  display: block;
  margin-bottom: 6px;
  font-size: clamp(0.66rem, 2.7vw, 0.74rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #b9b6e4;
}

.field__row {
  display: flex;
  align-items: stretch;
  gap: 8px;
}

.field__input {
  flex: 1 1 auto;
  min-width: 0;
  width: 100%;
  padding: 13px 14px;
  font-family: inherit;
  font-size: 1.02rem;
  font-weight: 800;
  color: #fff;
  background: rgba(4, 3, 18, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  appearance: none;
  -moz-appearance: textfield;
}

.field__input::-webkit-outer-spin-button,
.field__input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.field__input::placeholder {
  color: rgba(196, 192, 232, 0.42);
  font-weight: 600;
}

.field__input:hover {
  border-color: rgba(139, 92, 255, 0.45);
}

.field__input:focus {
  outline: none;
  border-color: var(--neon-cyan);
  background: rgba(6, 5, 24, 0.92);
  box-shadow: 0 0 0 3px rgba(79, 245, 226, 0.18);
}

.field__input.is-invalid {
  border-color: var(--neon-pink);
  box-shadow: 0 0 0 3px rgba(255, 94, 205, 0.18);
  animation: shake 0.42s ease-in-out;
}

.field__suffix {
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  border-radius: var(--radius-md);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.10);
  white-space: nowrap;
}

.field__error {
  margin: 6px 0 0;
  font-size: 0.7rem;
  font-weight: 700;
  color: #ff9ad9;
}

.unit-toggle {
  display: inline-flex;
  flex: none;
  gap: 3px;
  padding: 4px;
  border-radius: var(--radius-md);
  background: rgba(4, 3, 18, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.unit-toggle__btn {
  min-width: 46px;
  padding: 8px 10px;
  border: 0;
  border-radius: 11px;
  background: transparent;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease;
}

.unit-toggle__btn:hover {
  color: #fff;
}

.unit-toggle__btn.is-active {
  color: #08061e;
  background: linear-gradient(135deg, var(--neon-lime), var(--neon-cyan));
}

html[data-lang="hi"] .unit-toggle__btn {
  min-width: 58px;
  padding: 8px 7px;
  font-size: 0.7rem;
}

/* Calculate button */
.calc-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  margin-top: 4px;
  padding: 16px 18px;
  overflow: hidden;
  border: 0;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: clamp(0.94rem, 3.7vw, 1.08rem);
  font-weight: 900;
  letter-spacing: 0.01em;
  color: #07051c;
  cursor: pointer;
  background: linear-gradient(100deg, var(--neon-cyan) 0%, var(--neon-violet) 52%, var(--neon-pink) 100%);
  background-size: 180% 100%;
  box-shadow: 0 18px 40px -20px rgba(79, 245, 226, 0.85), inset 0 -3px 0 rgba(0, 0, 0, 0.18);
  animation: glowPulse 3s ease-in-out infinite, bgSlide 7s ease-in-out infinite alternate;
  transition: transform 0.16s ease, box-shadow 0.2s ease;
}

.calc-btn::after {
  content: "";
  position: absolute;
  top: 0;
  left: -60%;
  width: 45%;
  height: 100%;
  background: linear-gradient(100deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0));
  transform: skewX(-18deg);
  animation: shine 3.4s ease-in-out infinite;
  pointer-events: none;
}

.calc-btn:hover {
  transform: translateY(-2px) scale(1.006);
}

.calc-btn:active {
  transform: translateY(0) scale(0.994);
}

.calc-btn__emoji {
  font-size: 1.2em;
  line-height: 1;
  animation: floaty 2.6s ease-in-out infinite;
}

.calc-btn__text,
.calc-btn__emoji {
  position: relative;
  z-index: 1;
}

/* --------------------------- 6. REPORT CARD --------------------------- */
.report {
  position: relative;
  scroll-margin-top: 96px;
  margin-top: 18px;
  padding: clamp(14px, 4vw, 26px);
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(139, 92, 255, 0.38);
  background:
    radial-gradient(120% 72% at 50% -12%, rgba(139, 92, 255, 0.44) 0%, rgba(139, 92, 255, 0) 62%),
    radial-gradient(85% 55% at 102% 6%, rgba(79, 245, 226, 0.16) 0%, rgba(79, 245, 226, 0) 60%),
    radial-gradient(90% 60% at -6% 100%, rgba(255, 94, 205, 0.14) 0%, rgba(255, 94, 205, 0) 62%),
    linear-gradient(165deg, #0c0a2c 0%, #131044 48%, #060517 100%);
  box-shadow: 0 40px 90px -60px rgba(79, 245, 226, 0.75), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.report__stars {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.report__stars .rstar {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, #ffffff 0%, rgba(198, 220, 255, 0.9) 38%, rgba(198, 220, 255, 0) 72%);
  animation: twinkle var(--dur, 4.5s) ease-in-out infinite alternate;
  animation-delay: var(--delay, 0s);
  opacity: var(--op, 0.85);
}

.report__glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.report__glow--a {
  width: 320px;
  height: 320px;
  top: -140px;
  right: -110px;
  background: radial-gradient(circle, rgba(79, 245, 226, 0.20) 0%, rgba(79, 245, 226, 0) 70%);
}

.report__glow--b {
  width: 300px;
  height: 300px;
  bottom: -150px;
  left: -120px;
  background: radial-gradient(circle, rgba(255, 94, 205, 0.18) 0%, rgba(255, 94, 205, 0) 70%);
}

.report__inner {
  position: relative;
  z-index: 2;
}

.report__eyebrow {
  margin: 0 0 4px;
  font-size: clamp(0.55rem, 2.4vw, 0.64rem);
  font-weight: 800;
  letter-spacing: 0.30em;
  text-transform: uppercase;
  color: var(--neon-cyan);
}

.report__title {
  margin: 0;
  font-size: clamp(1.35rem, 6vw, 1.9rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 0.01em;
  color: #ffffff;
  text-shadow: 0 0 24px rgba(79, 245, 226, 0.42), 0 0 48px rgba(139, 92, 255, 0.35);
}

.report__subtitle {
  margin: 6px 0 0;
  font-size: clamp(0.7rem, 2.9vw, 0.82rem);
  line-height: 1.5;
  color: var(--ink-soft);
}

.report__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 12px;
}

.chip {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.16);
  font-size: clamp(0.68rem, 2.7vw, 0.78rem);
  font-weight: 800;
  color: #fff;
}

.chip__label {
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--muted);
}

.report__group {
  margin-top: 18px;
}

.group-title {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  font-size: clamp(0.9rem, 3.4vw, 1.02rem);
  font-weight: 900;
  letter-spacing: 0.01em;
  color: #e4e1ff;
}

.group-title::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, rgba(139, 92, 255, 0.65), rgba(139, 92, 255, 0));
}

.group-title__emoji {
  font-size: 1.05em;
  line-height: 1;
}

.pop-in-fast {
  animation: popIn 0.5s cubic-bezier(0.2, 0.9, 0.3, 1.28) both;
}

.report__note {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(255, 255, 255, 0.14);
  font-size: clamp(0.62rem, 2.5vw, 0.7rem);
  line-height: 1.55;
  color: #a9a6d4;
}

.report__note strong {
  color: #d6d3ff;
}

.report__credit {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  font-size: clamp(0.55rem, 2.2vw, 0.62rem);
  line-height: 1.65;
  color: #8f8cc0;
  overflow-wrap: anywhere;
}

.report__credit a {
  color: #8ef7e7;
  text-decoration: none;
}

.report__empty {
  position: relative;
  z-index: 2;
  display: grid;
  justify-items: center;
  gap: 8px;
  padding: clamp(22px, 7vw, 40px) 12px;
  text-align: center;
}

.report__empty-icon {
  font-size: clamp(2.2rem, 9vw, 3rem);
  line-height: 1;
  animation: floaty 3.4s ease-in-out infinite;
}

.report__empty-title {
  margin: 0;
  font-size: clamp(1.05rem, 4.4vw, 1.3rem);
  font-weight: 900;
  color: #fff;
}

.report__empty-text {
  max-width: 38ch;
  margin: 0;
  font-size: clamp(0.72rem, 2.9vw, 0.84rem);
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ----------------------- 7. BODY CARDS + CSS PLANETS ----------------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.body-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  height: 100%;
  padding: 15px 9px 11px;
  border-radius: 16px;
  text-align: center;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.085) 0%, rgba(255, 255, 255, 0.022) 100%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 14px 30px -24px rgba(0, 0, 0, 0.95), inset 0 1px 0 rgba(255, 255, 255, 0.09);
}

/* Staggered reveal. app.js sets `animation-delay` per card (index * 0.1s),
   so the grid cascades in one body at a time. */
.pop-in {
  animation: popIn 0.62s cubic-bezier(0.2, 0.9, 0.3, 1.28) both;
}

.body-card::after {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  border-radius: 16px 16px 0 0;
  background: var(--accent, var(--neon-violet));
}

@media (hover: hover) {
  .body-card {
    transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease;
  }

  .body-card:hover {
    transform: translateY(-3px);
    border-color: rgba(79, 245, 226, 0.45);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.11) 0%, rgba(255, 255, 255, 0.03) 100%);
  }
}

.badge {
  position: absolute;
  top: -9px;
  right: 7px;
  z-index: 3;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: clamp(0.5rem, 2.1vw, 0.56rem);
  font-weight: 900;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
  color: #08061e;
  box-shadow: 0 6px 16px -8px rgba(0, 0, 0, 0.9);
}

.badge--heaviest {
  background: linear-gradient(90deg, #ffe29a, #ffa94d);
}

.badge--lightest {
  background: linear-gradient(90deg, #b8f7ff, #4ff5e2);
}

.badge--omg {
  background: linear-gradient(90deg, #ff8fd8, #ff2e63);
  color: #fff;
}

.badge--home {
  background: linear-gradient(90deg, #d8ff9a, #7cf7a8);
}

.planet-stage {
  display: grid;
  place-items: center;
  width: 100%;
  height: 70px;
  margin-top: 4px;
}

.card-title {
  margin: 0;
  font-size: clamp(0.82rem, 3.4vw, 0.95rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: #ffffff;
}

.card-stats {
  display: grid;
  gap: 5px;
  width: 100%;
  margin: 0;
}

.stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 5px;
  padding: 4px 7px;
  border-radius: 9px;
  background: rgba(4, 3, 16, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.stat__label {
  flex: none;
  font-size: clamp(0.5rem, 2vw, 0.57rem);
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: #9c99c4;
}

.stat__value {
  margin: 0;
  font-size: clamp(0.66rem, 2.8vw, 0.78rem);
  font-weight: 800;
  line-height: 1.25;
  color: #f4f3ff;
  text-align: right;
  overflow-wrap: anywhere;
}

.stat--meta {
  padding: 1px 7px;
  background: transparent;
  border-color: transparent;
}

.stat--meta .stat__label,
.stat--meta .stat__value {
  font-size: clamp(0.48rem, 1.9vw, 0.55rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: none;
  color: #918ec0;
}

.card-fact {
  margin: 0;
  font-size: clamp(0.56rem, 2.4vw, 0.63rem);
  line-height: 1.45;
  color: #b3b0dc;
  overflow-wrap: anywhere;
}

/* ---- the planet itself: pure CSS, html2canvas-friendly (no filters/masks) ---- */
.pl {
  position: relative;
  display: block;
  width: var(--pl-size, 56px);
  height: var(--pl-size, 56px);
  flex: none;
  border-radius: 50%;
}

.pl__surface {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  border-radius: 50%;
  background: radial-gradient(circle at 31% 26%, var(--c1, #fff) 0%, var(--c2, #999) 54%, var(--c3, #333) 100%);
}

.pl__shine {
  position: absolute;
  inset: 0;
  z-index: 3;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 22%, rgba(255, 255, 255, 0.55) 0%, rgba(255, 255, 255, 0.16) 26%, rgba(255, 255, 255, 0) 55%);
  pointer-events: none;
}

.pl__shade {
  position: absolute;
  inset: 0;
  z-index: 2;
  border-radius: 50%;
  background: radial-gradient(circle at 74% 78%, rgba(0, 0, 0, 0) 34%, rgba(3, 2, 12, 0.55) 92%);
  pointer-events: none;
}

.pl-band {
  position: absolute;
  left: -16%;
  width: 132%;
  border-radius: 50%;
}

.pl-spot {
  position: absolute;
  display: block;
}

.pl-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 0;
  border-style: solid;
  border-radius: 50%;
  transform-origin: center;
}

.pl-flare {
  position: absolute;
  inset: -22%;
  z-index: 0;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 200, 70, 0.55) 34%, rgba(255, 140, 0, 0.22) 55%, rgba(255, 120, 0, 0) 72%);
}

.pl--sun .pl__surface {
  background: radial-gradient(circle at 34% 30%, #fffdf3 0%, #ffe480 26%, #ffb03a 62%, #f4690b 100%);
}

.pl--earth .pl__surface {
  background: radial-gradient(circle at 31% 26%, #cdeeff 0%, #3d92e0 42%, #1a4fa8 74%, #0a2356 100%);
}

.pl--saturn {
  --pl-size: 54px;
}

.pl--sun {
  --pl-size: 62px;
}

/* --- report: tablet & desktop grid --- */
@media (max-width: 419px) {
  .site-header {
    padding: 8px 8px;
  }

  .header-tools {
    gap: 5px;
  }

  .sound-toggle {
    padding: 7px 8px;
  }

  .sound-toggle__eq {
    display: none;
  }

  .lang-switch {
    padding: 3px;
  }

  .lang-switch__btn {
    padding: 6px 8px;
    font-size: 0.68rem;
  }
}

@media (min-width: 420px) {
  .card-grid {
    gap: 12px;
  }

  .body-card {
    padding: 16px 11px 12px;
  }

  .planet-stage {
    height: 76px;
  }
}

@media (min-width: 700px) {
  .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .pl {
    --pl-size: 64px;
  }

  .pl.pl--saturn {
    --pl-size: 62px;
  }

  .pl.pl--sun {
    --pl-size: 72px;
  }

  .stat {
    padding: 5px 8px;
  }

  .planet-stage {
    height: 84px;
  }
}

@media (min-width: 1040px) {
  .card-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  :root {
    --footer-space: 100px;
  }

  .stats-form {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }

  .calc-btn {
    grid-column: 1 / -1;
  }
}

/* ------------------------------ 8. ACTION DECK ------------------------------ */
.action-deck {
  position: relative;
  margin-top: 18px;
  padding: clamp(14px, 4vw, 20px);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(19, 16, 52, 0.92), rgba(9, 8, 28, 0.94));
  border: 1px solid rgba(79, 245, 226, 0.22);
  box-shadow: 0 30px 70px -55px rgba(79, 245, 226, 0.9);
}

.action-deck__title {
  margin: 0;
  font-size: clamp(1rem, 4vw, 1.2rem);
  font-weight: 900;
  color: #fff;
}

.action-deck__subtitle {
  margin: 5px 0 0;
  font-size: clamp(0.7rem, 2.8vw, 0.8rem);
  line-height: 1.5;
  color: var(--ink-soft);
}

.action-deck__buttons {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-family: inherit;
  font-size: clamp(0.76rem, 3.1vw, 0.86rem);
  font-weight: 900;
  letter-spacing: 0.07em;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.2s ease, background 0.2s ease, opacity 0.2s ease;
}

.action-btn--primary {
  color: #07051c;
  background: linear-gradient(100deg, var(--neon-cyan) 0%, var(--neon-violet) 100%);
  box-shadow: 0 18px 36px -22px rgba(79, 245, 226, 0.95);
}

.action-btn--ghost {
  color: var(--neon-cyan);
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(79, 245, 226, 0.48);
}

.action-btn:hover {
  transform: translateY(-2px);
}

.action-btn:active {
  transform: translateY(0) scale(0.993);
}

.action-btn:disabled {
  opacity: 0.6;
  cursor: progress;
  transform: none;
}

.action-btn.is-busy .action-btn__icon {
  animation: spin 1.1s linear infinite;
}

@media (min-width: 560px) {
  .action-deck__buttons {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
}

/* ----------------------------- 9. SITE FOOTER ----------------------------- */
.site-footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 60;
  padding: 7px 12px calc(7px + env(safe-area-inset-bottom));
  text-align: center;
  background: linear-gradient(180deg, rgba(7, 6, 26, 0.82) 0%, rgba(4, 3, 16, 0.98) 100%);
  border-top: 1px solid rgba(139, 92, 255, 0.30);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.site-footer__credit {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  gap: 1px 7px;
  margin: 0;
  font-size: clamp(0.56rem, 2.35vw, 0.68rem);
  line-height: 1.55;
  color: #c6c3ea;
  overflow-wrap: anywhere;
}

.site-footer__credit a {
  color: #7ef7e6;
  text-decoration: none;
  border-bottom: 1px dotted rgba(126, 247, 230, 0.5);
}

.site-footer__credit a:hover {
  color: #ffffff;
}

.site-footer__sep {
  color: rgba(196, 192, 232, 0.45);
}

.site-footer__sub {
  margin: 2px 0 0;
  font-size: clamp(0.52rem, 2.2vw, 0.6rem);
  letter-spacing: 0.05em;
  color: #8f8cc0;
}

/* -------------------------------- 10. TOASTS -------------------------------- */
.toast-stack {
  position: fixed;
  left: 50%;
  bottom: calc(var(--footer-space) - 12px + env(safe-area-inset-bottom));
  z-index: 90;
  display: grid;
  gap: 8px;
  width: min(92vw, 430px);
  transform: translateX(-50%);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 11px 14px;
  border-radius: 14px;
  font-size: clamp(0.72rem, 2.9vw, 0.82rem);
  font-weight: 700;
  line-height: 1.4;
  color: #f4f3ff;
  background: linear-gradient(160deg, rgba(26, 21, 70, 0.98), rgba(10, 8, 32, 0.98));
  border: 1px solid rgba(79, 245, 226, 0.45);
  box-shadow: 0 22px 44px -22px rgba(0, 0, 0, 0.95);
  animation: toastIn 0.3s cubic-bezier(0.2, 0.9, 0.3, 1.3) both, toastOut 0.34s ease-in 3.1s forwards;
}

.toast--warn {
  border-color: rgba(255, 94, 205, 0.55);
}

.toast__icon {
  font-size: 1.15rem;
  line-height: 1;
}

/* canvas-confetti paints its own fixed canvas — keep it out of the way */
.confetti-canvas,
#confetti-fallback-canvas {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
  pointer-events: none !important;
  z-index: 120 !important;
}

#confetti-fallback-canvas {
  display: block;
}

.noscript {
  position: relative;
  z-index: 5;
  margin: 20px auto;
  max-width: 520px;
  padding: 14px 18px;
  border-radius: 14px;
  background: #241a4e;
  border: 1px solid var(--neon-pink);
  color: #fff;
  text-align: center;
}

/* ------------------------------- 11. KEYFRAMES ------------------------------- */
@keyframes twinkle {
  from {
    opacity: calc(var(--op, 0.85) * 0.35);
  }

  to {
    opacity: var(--op, 0.85);
  }
}

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }

  to {
    transform: translate3d(2%, 3%, 0) scale(1.08);
  }
}

@keyframes floaty {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-6px);
  }
}

@keyframes popIn {
  0% {
    opacity: 0;
    transform: translateY(18px) scale(0.8);
  }

  62% {
    opacity: 1;
    transform: translateY(-2px) scale(1.03);
  }

  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes musicBob {
  0%,
  100% {
    transform: translateY(0) rotate(-4deg);
  }

  50% {
    transform: translateY(-2px) rotate(4deg);
  }
}

@keyframes equalize {
  from {
    transform: scaleY(0.3);
  }

  to {
    transform: scaleY(1);
  }
}

@keyframes glowPulse {
  0%,
  100% {
    box-shadow: 0 18px 40px -20px rgba(79, 245, 226, 0.85), inset 0 -3px 0 rgba(0, 0, 0, 0.18);
  }

  50% {
    box-shadow: 0 20px 46px -16px rgba(255, 94, 205, 0.75), inset 0 -3px 0 rgba(0, 0, 0, 0.18);
  }
}

@keyframes bgSlide {
  from {
    background-position: 0% 50%;
  }

  to {
    background-position: 100% 50%;
  }
}

@keyframes shine {
  0%,
  62% {
    left: -60%;
  }

  100% {
    left: 130%;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }

  20% {
    transform: translateX(-6px);
  }

  40% {
    transform: translateX(6px);
  }

  60% {
    transform: translateX(-4px);
  }

  80% {
    transform: translateX(4px);
  }
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.96);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes toastOut {
  to {
    opacity: 0;
    transform: translateY(-8px) scale(0.98);
  }
}

/* --------------------- 12. CAPTURE / REDUCED MOTION / PRINT --------------------- */
/* html2canvas must see the final, unanimated state of every card. */
#space-report-card.is-capturing,
#space-report-card.is-capturing * {
  animation: none !important;
  transition: none !important;
}

#space-report-card.is-capturing .body-card,
#space-report-card.is-capturing .pop-in {
  opacity: 1 !important;
  transform: none !important;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-delay: 0ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media print {
  @page {
    margin: 10mm;
  }

  html,
  body {
    background: #06051a !important;
    min-height: 0;
  }

  /* Print ONLY the report card: chrome, decks, footer, toasts and any
     confetti canvas are dropped. */
  .starfield,
  .site-header,
  .input-deck,
  .action-deck,
  .site-footer,
  .toast-stack,
  .skip-link,
  .noscript,
  .sound-toggle,
  .music-toggle,
  .confetti-canvas,
  #confetti-fallback-canvas {
    display: none !important;
  }

  .page {
    max-width: none;
    margin: 0;
    padding: 0;
  }

  .report {
    margin: 0;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    overflow: visible;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
    gap: 8px;
  }

  .body-card {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
    break-inside: avoid;
    page-break-inside: avoid;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .report,
  .report * {
    animation: none !important;
    transition: none !important;
  }

  .report .body-card,
  .report .group-title {
    opacity: 1 !important;
    transform: none !important;
  }

  .report__group {
    margin-top: 12px;
  }

  .body-card {
    gap: 5px;
    padding: 11px 7px 8px;
  }

  .planet-stage {
    height: 58px;
  }

  .pl {
    --pl-size: 46px;
  }

  .pl.pl--saturn {
    --pl-size: 44px;
  }

  .pl.pl--sun {
    --pl-size: 50px;
  }

  .stat {
    padding: 3px 6px;
  }

  .card-fact {
    font-size: 0.55rem;
    line-height: 1.35;
  }

  .pl,
  .pl__surface,
  .pl__shine,
  .pl__shade,
  .pl-band,
  .pl-spot,
  .pl-ring,
  .pl-flare {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}