:root {
  --sky-0: #eaf7ff;
  --sky-1: #d6f0ff;
  --sky-2: #b9e4ff;
  --line: #6eb5dd;
  --ink: #083f68;
  --ink-soft: #0f5f92;
  --panel: rgba(255, 255, 255, 0.74);
  --panel-border: rgba(8, 63, 104, 0.2);
  --focus-ring: #ffb86b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, var(--sky-0), var(--sky-1) 45%, var(--sky-2));
  overflow-x: hidden;
}

body.modal-open {
  overflow: hidden;
}

.sky-bg,
.blueprint-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.sky-bg {
  display: none;
}

/* Rocket takeoff silhouette in the foreground background. */
.sky-bg::after {
  content: "";
  position: absolute;
  right: 7%;
  bottom: -30px;
  width: min(34vw, 360px);
  height: min(70vh, 620px);
  background:
    radial-gradient(ellipse at 50% 100%, rgba(255, 153, 0, 0.5), rgba(255, 153, 0, 0) 52%),
    linear-gradient(to top, rgba(255, 120, 0, 0.7), rgba(255, 120, 0, 0));
  clip-path: polygon(50% 0, 64% 14%, 70% 40%, 70% 72%, 83% 87%, 83% 97%, 61% 87%, 39% 87%, 17% 97%, 17% 87%, 30% 72%, 30% 40%, 36% 14%);
  filter: drop-shadow(0 20px 24px rgba(5, 49, 80, 0.28));
  opacity: 0.8;
  animation: launchPulse 2.8s ease-in-out infinite;
  transition: opacity 220ms ease, transform 220ms ease;
}

body.hide-launch-glow .sky-bg::after {
  opacity: 0;
  transform: translateY(28px) scale(0.94);
  animation: none;
}

.blueprint-overlay {
  z-index: -2;
  opacity: 0.85;
}

.blueprint-svg {
  width: 100%;
  height: 100%;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.9rem 1.2rem;
  backdrop-filter: blur(8px);
  background: rgba(234, 247, 255, 0.75);
  border-bottom: 1px solid rgba(8, 63, 104, 0.15);
}

.brand {
  font-family: "Orbitron", sans-serif;
  font-size: clamp(1.2rem, 2.8vw, 2rem);
  letter-spacing: 0.22rem;
  color: #032d4d;
  font-weight: 800;
}

.brand-stack {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-tagline {
  margin-top: 0.22rem;
  font-size: 0.67rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 700;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.header-profile {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(8, 63, 104, 0.18);
  border-radius: 999px;
  padding: 0.12rem 0.5rem 0.12rem 0.18rem;
  cursor: pointer;
  color: inherit;
  text-decoration: none;
  transition: background 160ms ease, transform 160ms ease;
}

.header-profile:visited,
.header-profile:hover,
.header-profile:active,
.header-profile:focus,
.header-profile:focus-visible {
  color: inherit;
  text-decoration: none;
}

.header-profile:hover {
  background: #fff;
  transform: translateY(-1px);
}

.header-avatar {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid rgba(8, 63, 104, 0.2);
  background: #e1f2ff;
}

.header-name {
  display: inline-block;
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--ink);
  max-width: 90px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.toolbar-btn,
.info-btn,
.close-btn,
.save-btn {
  border: 1px solid rgba(8, 63, 104, 0.22);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255,255,255,0.95) 0%, rgba(210,236,255,0.85) 100%);
  box-shadow: 0 2px 6px rgba(8,63,104,0.13), inset 0 1px 0 rgba(255,255,255,0.9);
  color: var(--ink);
  font-weight: 600;
  padding: 0.55rem 0.95rem;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.toolbar-btn:hover,
.info-btn:hover,
.close-btn:hover,
.save-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 14px rgba(8,63,104,0.18), inset 0 1px 0 rgba(255,255,255,0.9);
  background: linear-gradient(180deg, #ffffff 0%, #d0eaff 100%);
}

.toolbar-btn:active,
.info-btn:active,
.close-btn:active,
.save-btn:active {
  transform: translateY(0);
  box-shadow: 0 1px 3px rgba(8,63,104,0.1);
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.toolbar-btn:focus,
.toolbar-btn:focus-visible,
.toolbar-btn:-moz-focusring {
  outline: none;
}

.toolbar-btn::-moz-focus-inner {
  border: 0;
}

.info-btn {
  background: #0e6fa8;
  color: #fff;
  border-color: #0e6fa8;
}

main {
  position: relative;
  z-index: 1;
  padding: 2.3rem 1rem 3rem;
  max-width: 1080px;
  margin: 0 auto;
}

.hero h1 {
  margin: 0;
  font-family: "Orbitron", sans-serif;
  color: #0a3e66;
  font-size: clamp(2.1rem, 7vw, 4.2rem);
  text-transform: uppercase;
}

.hero p {
  max-width: 65ch;
  line-height: 1.55;
  font-size: clamp(1rem, 1.8vw, 1.2rem);
}

.hero-topics {
  margin: 0.25rem 0 0;
  color: var(--ink-soft);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.86rem;
}

.feature-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

.feature-pills .action-pill {
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  border: 1px solid rgba(8, 63, 104, 0.2);
  background: rgba(255, 255, 255, 0.68);
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
}

.feature-pills .action-pill:hover {
  background: #fff;
}

.content-grid {
  margin-top: 1.4rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.panel {
  display: none;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 1rem;
  box-shadow: 0 10px 24px rgba(4, 58, 95, 0.1);
  animation: fadeIn 360ms ease;
}

.panel.active {
  display: block;
}

.panel-link {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.panel-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(4, 58, 95, 0.14);
}

.modal {
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  max-width: 540px;
  width: calc(100% - 2rem);
  padding: 1rem 1rem 1.2rem;
  color: var(--ink);
  background: #f5fbff;
}

#infoDialog.modal,
#settingsDialog.modal,
#profileDialog.modal {
  width: 100vw;
  max-width: 100vw;
  height: 100vh;
  max-height: 100vh;
  margin: 0;
  border-radius: 0;
  padding: 1.1rem 1rem 1.4rem;
  overflow-y: auto;
  color: #e8f3ff;
  border-color: rgba(171, 214, 255, 0.32);
  background:
    linear-gradient(180deg, rgba(5, 15, 32, 0.7) 0%, rgba(7, 20, 40, 0.78) 100%),
    radial-gradient(circle at 14% 18%, rgba(170, 219, 255, 0.2) 0%, rgba(170, 219, 255, 0) 36%),
    url("https://upload.wikimedia.org/wikipedia/commons/c/cb/The_Blue_Marble_%28remastered%29.jpg") center/cover no-repeat;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.16), inset 0 -24px 44px rgba(47, 123, 190, 0.18);
}

#creditsDialog.modal {
  width: 100vw;
  max-width: 100vw;
  height: 100vh;
  max-height: 100vh;
  margin: 0;
  border-radius: 0;
  padding: 1.1rem 1rem 1.4rem;
  overflow-y: auto;
  color: #e8f3ff;
  border-color: rgba(171, 214, 255, 0.32);
  background:
    radial-gradient(circle at 82% 10%, rgba(110, 193, 255, 0.2) 0%, rgba(110, 193, 255, 0) 32%),
    radial-gradient(circle at 16% 88%, rgba(64, 139, 208, 0.28) 0%, rgba(64, 139, 208, 0) 42%),
    repeating-linear-gradient(145deg, rgba(174, 220, 255, 0.11) 0 1px, transparent 1px 18px),
    linear-gradient(180deg, #102746 0%, #0b1f3a 52%, #07172e 100%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.16), inset 0 -24px 44px rgba(47, 123, 190, 0.18);
}

#infoDialog.modal[open],
#settingsDialog.modal[open],
#profileDialog.modal[open],
#creditsDialog.modal[open] {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

#infoDialog h3,
#settingsDialog h3,
#profileDialog h3,
#creditsDialog h3 {
  color: #edf6ff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.45);
}

#settingsDialog label,
#settingsDialog #fontSizeLabel,
#profileDialog label,
#profileDialog .image-status,
#infoDialog ul {
  color: #dbeeff;
}

.text-size-simulation {
  position: static;
  margin-top: auto;
  align-self: center;
  padding: 0.42rem 0.95rem;
  border: 2px solid rgba(8, 63, 104, 0.5);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(208, 234, 255, 0.96) 100%);
  color: #07385b;
  font-family: "Orbitron", sans-serif;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1;
  box-shadow: 0 8px 22px rgba(6, 67, 106, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.95);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.7);
}

.modal::backdrop {
  background: rgba(5, 14, 28, 0.48);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal h3 {
  margin-top: 0;
  font-family: "Orbitron", sans-serif;
}

#creditsDialog h3 {
  color: #0a2f4d;
}

#creditsDialog p {
  color: #dbeeff;
  font-size: clamp(1.18rem, 2.8vw, 1.55rem);
  font-weight: 700;
  line-height: 1.65;
  background: rgba(8, 28, 52, 0.66);
  border: 1px solid rgba(171, 214, 255, 0.28);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
}

.credit-initial {
  font-family: "Orbitron", sans-serif;
  font-size: 1.12em;
  letter-spacing: 0.03em;
  color: #0a3e66;
}

.modal ul {
  line-height: 1.55;
}

#infoDialog h3 {
  font-size: clamp(2.1rem, 6.4vw, 4rem);
  line-height: 1.08;
  margin-bottom: 0.45rem;
}

#infoDialog ul {
  font-size: clamp(1.3rem, 3.3vw, 2.2rem);
  line-height: 1.48;
  margin: 0;
  padding-left: 1.25em;
  flex: 1;
  overflow-y: auto;
}

#infoDialog li + li {
  margin-top: 0.42em;
}

#profileDialog label,
#profileDialog input {
  display: block;
  width: 100%;
}

#profileDialog input[type="text"],
#profileDialog input[type="file"] {
  margin-top: 0.3rem;
  margin-bottom: 0.75rem;
  border-radius: 12px;
  border: 1px solid rgba(8, 63, 104, 0.2);
  padding: 0.55rem 0.65rem;
  background: #fff;
}

#profileDialog input[type="text"] {
  color: #eaf3ff;
  border-color: rgba(200, 220, 255, 0.25);
  background: linear-gradient(180deg, rgba(26, 44, 76, 0.95) 0%, rgba(10, 22, 42, 0.95) 100%);
}

#profileDialog input[type="text"]::placeholder {
  color: #b7cceb;
}

.image-status {
  display: block;
  margin-top: -0.35rem;
  margin-bottom: 0.6rem;
  color: var(--ink-soft);
  font-size: 0.8rem;
  font-weight: 600;
}

.profile-preview {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-top: 0.6rem;
  margin-bottom: 0.9rem;
}

#profileImage {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid rgba(8, 63, 104, 0.22);
  background: #e1f2ff;
  flex-shrink: 0;
}

.modal-actions {
  display: flex;
  gap: 0.6rem;
}

#infoDialog .close-btn,
#creditsDialog .close-btn,
#profileDialog .close-btn,
#profileDialog .modal-actions {
  margin-top: auto;
}

.video-modal {
  max-width: 960px;
}

.video-intro {
  margin-top: 0.2rem;
  margin-bottom: 0.9rem;
  line-height: 1.5;
}

.video-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-bottom: 0.9rem;
}

.video-card {
  border: 1px solid rgba(8, 63, 104, 0.2);
  border-radius: 12px;
  padding: 0.55rem;
  background: rgba(255, 255, 255, 0.58);
}

.video-card h4 {
  margin: 0 0 0.45rem;
  font-family: "Orbitron", sans-serif;
  font-size: 0.88rem;
  color: var(--ink);
}

.video-frame {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 10px;
  background: #000;
}

.video-actions {
  display: flex;
  gap: 0.45rem;
  margin-top: 0.55rem;
  flex-wrap: wrap;
}

.video-link-btn {
  text-decoration: none;
}

.settings-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-top: 0.4rem;
  margin-bottom: 0.5rem;
}

#bgColorInput {
  width: 44px;
  height: 32px;
  border: 1px solid rgba(8,63,104,0.2);
  border-radius: 8px;
  padding: 2px;
  cursor: pointer;
  background: #fff;
}

#fontSizeInput {
  flex: 1;
  min-width: 80px;
  accent-color: #0e6fa8;
  cursor: pointer;
}

#bgColorHex,
#fontSizeLabel {
  font-family: monospace;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.topic-nav {
  justify-content: space-between;
}

.topic-main {
  max-width: 1020px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

.topic-card {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(8, 63, 104, 0.2);
  border-radius: 18px;
  padding: 1.1rem;
  box-shadow: 0 12px 25px rgba(6, 67, 106, 0.12);
}

.topic-card h1 {
  margin: 0;
  font-family: "Orbitron", sans-serif;
  color: #083f68;
}

.topic-card p {
  line-height: 1.6;
  max-width: 70ch;
}

.topic-image {
  margin: 1rem 0 0;
  border: 1px solid rgba(8, 63, 104, 0.2);
  border-radius: 14px;
  overflow: hidden;
}

.topic-image svg {
  display: block;
  width: 100%;
  height: auto;
}

.topic-image img {
  display: block;
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.topic-image figcaption {
  padding: 0.35rem 0.7rem;
  font-size: 0.78rem;
  color: var(--ink-soft);
  background: rgba(234, 247, 255, 0.7);
}

.build-steps {
  margin-top: 1.4rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(8, 63, 104, 0.15);
}

.build-steps h2 {
  font-family: "Orbitron", sans-serif;
  font-size: 1.1rem;
  color: #083f68;
  margin-top: 0;
}

.build-steps ol {
  padding-left: 1.3rem;
  line-height: 1.7;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.build-steps li {
  background: rgba(234, 247, 255, 0.7);
  border-left: 3px solid #6eb5dd;
  padding: 0.5rem 0.75rem;
  border-radius: 0 10px 10px 0;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

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

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

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

/* ── Profile Page ──────────────────────────────────────── */
.profile-page-card {
  max-width: 520px;
  margin: 0 auto;
}

.profile-page-display {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin: 0.8rem 0 0;
}

.profile-page-avatar-wrap {
  flex-shrink: 0;
}

.profile-page-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(8, 63, 104, 0.22);
  background: #e1f2ff;
  display: block;
}

.profile-page-name {
  margin: 0;
  font-family: "Orbitron", sans-serif;
  font-size: 1.3rem;
  color: #083f68;
}

.profile-page-sub {
  margin: 0.2rem 0 0;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.profile-divider {
  border: none;
  border-top: 1px solid rgba(8, 63, 104, 0.12);
  margin: 1rem 0;
}

.profile-form {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.profile-form-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.profile-form-field label {
  font-weight: 600;
  font-size: 0.9rem;
}

.profile-form-field input[type="text"],
.profile-form-field input[type="file"] {
  border-radius: 12px;
  border: 1px solid rgba(8, 63, 104, 0.2);
  padding: 0.55rem 0.65rem;
  background: #fff;
  font-family: inherit;
}

.profile-form-field input[type="file"] {
  color: transparent;
  font-size: 0;
  border-color: rgba(200, 220, 255, 0.25);
  background: linear-gradient(180deg, rgba(26, 44, 76, 0.95) 0%, rgba(10, 22, 42, 0.95) 100%);
  cursor: pointer;
}

.profile-form-field input[type="file"]::file-selector-button {
  color: #eaf3ff;
  font-size: 0.92rem;
  font-family: inherit;
  font-weight: 600;
  border: 0;
  background: transparent;
  padding: 0;
  margin-right: 0.55rem;
  cursor: pointer;
}

#profileDialog input[type="file"] {
  color: transparent;
  font-size: 0;
  border-color: rgba(200, 220, 255, 0.25);
  background: linear-gradient(180deg, rgba(26, 44, 76, 0.95) 0%, rgba(10, 22, 42, 0.95) 100%);
  cursor: pointer;
}

#profileDialog input[type="file"]::file-selector-button {
  color: #eaf3ff;
  font-size: 0.92rem;
  font-family: inherit;
  font-weight: 600;
  border: 0;
  background: transparent;
  padding: 0;
  margin-right: 0.55rem;
  cursor: pointer;
}

.profile-form-field input[type="text"] {
  color: #eaf3ff;
  border-color: rgba(200, 220, 255, 0.25);
  background: linear-gradient(180deg, rgba(26, 44, 76, 0.95) 0%, rgba(10, 22, 42, 0.95) 100%);
}

.profile-form-field input[type="text"]::placeholder {
  color: #b7cceb;
}

/* ── Fun Facts ─────────────────────────────────────────── */
.fun-facts-section {
  margin-top: 3rem;
  padding-top: 2rem;
}

.fun-facts-heading {
  font-family: "Orbitron", sans-serif;
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  color: #0a3e66;
  margin: 0 0 1.5rem;
}

.fun-facts-group {
  margin-bottom: 2rem;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(8, 63, 104, 0.14);
  border-radius: 16px;
  padding: 1rem 1.1rem 1.1rem;
  box-shadow: 0 6px 18px rgba(6, 67, 106, 0.08);
}

.scroll-reveal {
  opacity: 0;
  transform: translateY(26px) scale(0.985);
  transition: opacity 520ms ease, transform 520ms ease;
  will-change: opacity, transform;
}

.scroll-reveal.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.facts-category {
  margin: 0 0 0.75rem;
  font-family: "Orbitron", sans-serif;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.facts-rockets { color: #b84500; }
.facts-boats   { color: #0b6090; }
.facts-drones  { color: #2a6b2a; }

.facts-list {
  margin: 0;
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  line-height: 1.6;
}

.facts-list li {
  background: rgba(234, 247, 255, 0.65);
  border-left: 3px solid #6eb5dd;
  padding: 0.45rem 0.7rem;
  border-radius: 0 10px 10px 0;
}

.landing-main {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.landing-card {
  width: min(92vw, 640px);
  border: 1px solid rgba(8, 63, 104, 0.18);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.76);
  backdrop-filter: blur(7px);
  box-shadow: 0 16px 34px rgba(6, 67, 106, 0.16);
  text-align: center;
  padding: 2rem 1.2rem 2.2rem;
}

.landing-brand {
  margin: 0;
  font-family: "Orbitron", sans-serif;
  font-size: clamp(2.3rem, 9vw, 5rem);
  letter-spacing: 0.2em;
  color: #032d4d;
}

.landing-subtitle {
  margin: 0.6rem 0 1.2rem;
  font-size: clamp(0.95rem, 2.5vw, 1.2rem);
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
}

.landing-explore-btn {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 155px;
  min-height: 48px;
  border-radius: 999px;
  border: 1px solid rgba(118, 43, 24, 0.75);
  background: linear-gradient(180deg, #e76d2d 0%, #c44c16 100%);
  box-shadow: 0 5px 13px rgba(88, 33, 17, 0.38), inset 0 1px 0 rgba(255,255,255,0.35);
  color: #fff4ec;
  font-weight: 700;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.landing-explore-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 9px 18px rgba(88, 33, 17, 0.46), inset 0 1px 0 rgba(255,255,255,0.38);
}

.mars-landing {
  background:
    #050505
    url("assets/mars-landing.jpg")
    center center / 112% auto no-repeat;
}

.mars-landing .sky-bg {
  background:
    radial-gradient(circle at 52% 52%, rgba(255, 123, 72, 0.16), rgba(255, 123, 72, 0) 38%),
    linear-gradient(to bottom, rgba(15, 8, 7, 0.18), rgba(15, 8, 7, 0.48));
}

.mars-landing .sky-bg::after {
  display: none;
}

.mars-landing .landing-card {
  background: rgba(34, 18, 12, 0.62);
  border-color: rgba(255, 166, 123, 0.35);
}

.mars-landing .landing-brand,
.mars-landing .landing-subtitle {
  color: #ffe5d2;
}

.space-theme {
  background:
    linear-gradient(to bottom, rgba(2, 6, 16, 0.5), rgba(2, 6, 16, 0.72)),
    url("https://upload.wikimedia.org/wikipedia/commons/c/cb/The_Blue_Marble_%28remastered%29.jpg") center/cover no-repeat;
  background-color: #060a16;
  color: #eaf3ff;
}

.space-theme .sky-bg {
  display: none;
}

.space-theme .sky-bg::after {
  display: none;
}

.space-theme .top-nav {
  background: rgba(7, 16, 36, 0.78);
  border-bottom-color: rgba(205, 224, 255, 0.18);
}

.space-theme .brand,
.space-theme .brand-tagline,
.space-theme .header-name,
.space-theme .hero h1,
.space-theme .hero p,
.space-theme .hero-topics,
.space-theme .topic-card h1,
.space-theme .topic-card p,
.space-theme .build-steps h2,
.space-theme .build-steps li,
.space-theme .fun-facts-heading,
.space-theme .archive-subtitle,
.space-theme .rocket-kicker,
.space-theme .rocket-detail-panel h2,
.space-theme .rocket-blueprint-panel h2,
.space-theme .profile-page-name,
.space-theme .profile-page-sub,
.space-theme .profile-form-field label,
.space-theme .panel h2,
.space-theme .panel p {
  color: #eaf3ff;
}

.space-theme .facts-list li {
  color: #0a1a2e;
}

.space-theme .header-profile,
.space-theme .panel,
.space-theme .topic-card,
.space-theme .build-steps li,
.space-theme .fun-facts-group,
.space-theme .nasa-archive-section,
.space-theme .rocket-detail-panel,
.space-theme .rocket-blueprint-panel,
.space-theme .modal {
  background: rgba(8, 20, 44, 0.68);
  border-color: rgba(200, 220, 255, 0.2);
}

.space-theme .toolbar-btn,
.space-theme .info-btn,
.space-theme .close-btn,
.space-theme .save-btn,
.space-theme .feature-pills .action-pill {
  color: #eaf3ff;
  border-color: rgba(200, 220, 255, 0.24);
  background: linear-gradient(180deg, rgba(26, 44, 76, 0.92) 0%, rgba(10, 22, 42, 0.92) 100%);
}

.space-theme .rocket-archive-btn {
  color: #eaf3ff;
  border-color: rgba(200, 220, 255, 0.24);
  background:
    linear-gradient(180deg, rgba(26, 44, 76, 0.85) 0%, rgba(10, 22, 42, 0.85) 100%),
    radial-gradient(circle at 12% 18%, rgba(255, 255, 255, 0.85) 0 1px, transparent 2px),
    radial-gradient(circle at 28% 34%, rgba(255, 255, 255, 0.6) 0 1px, transparent 2px),
    radial-gradient(circle at 44% 14%, rgba(255, 255, 255, 0.72) 0 1px, transparent 2px),
    radial-gradient(circle at 62% 28%, rgba(255, 255, 255, 0.62) 0 1px, transparent 2px),
    radial-gradient(circle at 78% 16%, rgba(255, 255, 255, 0.85) 0 1px, transparent 2px),
    radial-gradient(circle at 86% 38%, rgba(255, 255, 255, 0.56) 0 1px, transparent 2px),
    radial-gradient(circle at 18% 62%, rgba(255, 255, 255, 0.62) 0 1px, transparent 2px),
    radial-gradient(circle at 35% 72%, rgba(255, 255, 255, 0.52) 0 1px, transparent 2px),
    radial-gradient(circle at 58% 64%, rgba(255, 255, 255, 0.7) 0 1px, transparent 2px),
    radial-gradient(circle at 74% 74%, rgba(255, 255, 255, 0.56) 0 1px, transparent 2px),
    linear-gradient(180deg, #02050d 0%, #050a16 100%);
}

.space-theme .rocket-archive-btn span,
.space-theme #bgColorHex,
.space-theme #fontSizeLabel,
.space-theme .image-status {
  color: #d5e6ff;
}

.space-theme .facts-rockets,
.space-theme .facts-boats,
.space-theme .facts-drones {
  color: #f3f7ff;
}

.space-theme .blueprint-svg text {
  fill: rgba(255, 255, 255, 0.95) !important;
}

.space-theme .blueprint-svg path,
.space-theme .blueprint-svg line,
.space-theme .blueprint-svg circle,
.space-theme .blueprint-svg rect,
.space-theme .blueprint-svg ellipse {
  stroke: rgba(255, 255, 255, 0.65) !important;
}

.space-theme .modal::backdrop {
  background: rgba(4, 10, 22, 0.56);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.space-theme .nasa-archive-section {
  background: #08142c;
}

.space-theme #creditsDialog h3,
.earth-home #creditsDialog h3 {
  color: #f1f7ff;
}

.space-theme #creditsDialog p,
.earth-home #creditsDialog p {
  color: #f1f7ff;
  background: rgba(12, 30, 58, 0.9);
  border-color: rgba(200, 220, 255, 0.25);
}

.earth-home {
  background:
    url("https://upload.wikimedia.org/wikipedia/commons/c/cb/The_Blue_Marble_%28remastered%29.jpg") center/cover no-repeat;
  background-color: #06101a;
  color: #f2f7ff;
}

.earth-home .sky-bg {
  display: none;
}

.earth-home .sky-bg::after {
  display: none;
}

.earth-home .blueprint-overlay {
  display: none;
}

.earth-home .hero h1,
.earth-home .hero p,
.earth-home .hero-topics,
.earth-home .fun-facts-heading,
.earth-home .archive-subtitle,
.earth-home .panel h2,
.earth-home .panel p,
.earth-home .nasa-archive-section h2,
.earth-home .rocket-archive-btn span {
  color: #f2f7ff;
}

.earth-home .brand,
.earth-home .brand-tagline,
.earth-home .header-name {
  color: #f2f7ff;
}

.earth-home .header-profile {
  gap: 0.45rem;
}

.earth-home .top-nav {
  background: rgba(5, 14, 28, 0.66);
  border-bottom-color: rgba(203, 225, 255, 0.22);
}

.earth-home .toolbar-btn,
.earth-home .close-btn,
.earth-home .save-btn,
.earth-home .info-btn,
.earth-home .feature-pills .action-pill {
  color: #f2f7ff;
  border-color: rgba(203, 225, 255, 0.26);
  background: linear-gradient(180deg, rgba(24, 48, 78, 0.76) 0%, rgba(8, 25, 46, 0.76) 100%);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.26);
}

.earth-home .header-profile,
.earth-home .panel,
.earth-home .fun-facts-group,
.earth-home .nasa-archive-section,
.earth-home .facts-list li {
  background: rgba(7, 23, 44, 0.64);
  border-color: rgba(203, 225, 255, 0.2);
}

.earth-home .fun-facts-group,
.earth-home .facts-list li {
  background: rgba(5, 18, 38, 0.82);
  backdrop-filter: blur(2px);
}

.earth-home .nasa-archive-section {
  background: #07172c;
}

.earth-home .facts-rockets,
.earth-home .facts-boats,
.earth-home .facts-drones,
.earth-home .facts-list li,
.earth-home .archive-subtitle {
  color: #eaf3ff;
}

.earth-home .facts-category,
.earth-home .facts-list li {
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.55);
}

.earth-home .facts-list li {
  border-left-color: #8dc2ff;
}

.earth-home .rocket-archive-btn {
  background:
    linear-gradient(180deg, rgba(13, 33, 58, 0.82) 0%, rgba(7, 24, 46, 0.82) 100%),
    radial-gradient(circle at 12% 18%, rgba(255, 255, 255, 0.85) 0 1px, transparent 2px),
    radial-gradient(circle at 28% 34%, rgba(255, 255, 255, 0.6) 0 1px, transparent 2px),
    radial-gradient(circle at 44% 14%, rgba(255, 255, 255, 0.72) 0 1px, transparent 2px),
    radial-gradient(circle at 62% 28%, rgba(255, 255, 255, 0.62) 0 1px, transparent 2px),
    radial-gradient(circle at 78% 16%, rgba(255, 255, 255, 0.85) 0 1px, transparent 2px),
    radial-gradient(circle at 86% 38%, rgba(255, 255, 255, 0.56) 0 1px, transparent 2px),
    radial-gradient(circle at 18% 62%, rgba(255, 255, 255, 0.62) 0 1px, transparent 2px),
    radial-gradient(circle at 35% 72%, rgba(255, 255, 255, 0.52) 0 1px, transparent 2px),
    radial-gradient(circle at 58% 64%, rgba(255, 255, 255, 0.7) 0 1px, transparent 2px),
    radial-gradient(circle at 74% 74%, rgba(255, 255, 255, 0.56) 0 1px, transparent 2px),
    linear-gradient(180deg, #02050d 0%, #050a16 100%);
  border-color: rgba(203, 225, 255, 0.24);
}

.earth-home .blueprint-svg text {
  fill: rgba(255, 255, 255, 0.9) !important;
}

.earth-home .blueprint-svg path,
.earth-home .blueprint-svg line,
.earth-home .blueprint-svg circle,
.earth-home .blueprint-svg rect,
.earth-home .blueprint-svg ellipse {
  stroke: rgba(255, 255, 255, 0.34) !important;
}

.earth-home .modal {
  background: rgba(8, 20, 44, 0.9);
  border-color: rgba(200, 220, 255, 0.22);
  color: #eaf3ff;
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.4);
}

.earth-home .modal h3,
.earth-home .modal p,
.earth-home .modal li,
.earth-home .modal label,
.earth-home .modal strong,
.earth-home .modal small {
  color: #eaf3ff;
}

.earth-home .modal input[type="text"],
.earth-home .modal input[type="file"],
.earth-home .modal .settings-row {
  color: #eaf3ff;
}

.earth-home .modal input[type="text"],
.earth-home .modal input[type="file"] {
  background: rgba(12, 30, 58, 0.95);
  border-color: rgba(200, 220, 255, 0.25);
}

.earth-home .modal input[type="file"]::file-selector-button {
  border: 1px solid rgba(200, 220, 255, 0.25);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(26, 44, 76, 0.95) 0%, rgba(10, 22, 42, 0.95) 100%);
  color: #eaf3ff;
  padding: 0.3rem 0.65rem;
  margin-right: 0.6rem;
  cursor: pointer;
}

.earth-home .modal #bgColorHex,
.earth-home .modal #fontSizeLabel,
.earth-home .modal .image-status {
  color: #d5e6ff;
}

.earth-home .modal::backdrop {
  background: rgba(5, 14, 28, 0.56);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.byline-credit {
  position: fixed;
  right: 0.8rem;
  bottom: 0.7rem;
  margin: 0;
  color: #0a4f7f;
  font-size: 0.8rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(8, 63, 104, 0.15);
  border-radius: 999px;
  padding: 0.28rem 0.6rem;
}

.nasa-archive-section {
  margin-top: 2.2rem;
  padding: 1.2rem;
  border-radius: 18px;
  border: 1px solid rgba(8, 63, 104, 0.16);
  background: #f5fbff;
  box-shadow: 0 8px 20px rgba(6, 67, 106, 0.09);
}

.archive-subtitle {
  margin: 0.1rem 0 1rem;
  color: var(--ink-soft);
  line-height: 1.55;
}

.rocket-button-grid {
  display: grid;
  gap: 0.7rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.rocket-archive-btn {
  text-decoration: none;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: stretch;
  min-height: 0;
  border-radius: 12px;
  border: 1px solid rgba(8, 63, 104, 0.2);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.94) 0%, rgba(203,232,255,0.86) 100%),
    radial-gradient(circle at 12% 18%, rgba(255, 255, 255, 0.85) 0 1px, transparent 2px),
    radial-gradient(circle at 28% 34%, rgba(255, 255, 255, 0.6) 0 1px, transparent 2px),
    radial-gradient(circle at 44% 14%, rgba(255, 255, 255, 0.72) 0 1px, transparent 2px),
    radial-gradient(circle at 62% 28%, rgba(255, 255, 255, 0.62) 0 1px, transparent 2px),
    radial-gradient(circle at 78% 16%, rgba(255, 255, 255, 0.85) 0 1px, transparent 2px),
    radial-gradient(circle at 86% 38%, rgba(255, 255, 255, 0.56) 0 1px, transparent 2px),
    radial-gradient(circle at 18% 62%, rgba(255, 255, 255, 0.62) 0 1px, transparent 2px),
    radial-gradient(circle at 35% 72%, rgba(255, 255, 255, 0.52) 0 1px, transparent 2px),
    radial-gradient(circle at 58% 64%, rgba(255, 255, 255, 0.7) 0 1px, transparent 2px),
    radial-gradient(circle at 74% 74%, rgba(255, 255, 255, 0.56) 0 1px, transparent 2px),
    linear-gradient(180deg, #02050d 0%, #050a16 100%);
  color: var(--ink);
  font-weight: 700;
  padding: 0;
  overflow: hidden;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.rocket-archive-btn::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -18px;
  transform: translateX(-50%);
  width: 140px;
  height: 140px;
  background: none !important;
  filter: blur(0.4px);
  pointer-events: none;
  z-index: 1;
  display: none !important;
  opacity: 0 !important;
}

.rocket-archive-btn::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 86px;
  background:
    radial-gradient(circle at 12% 18%, rgba(255, 255, 255, 0.48) 0 1px, transparent 2px),
    radial-gradient(circle at 28% 34%, rgba(255, 255, 255, 0.36) 0 1px, transparent 2px),
    radial-gradient(circle at 44% 14%, rgba(255, 255, 255, 0.42) 0 1px, transparent 2px),
    radial-gradient(circle at 62% 28%, rgba(255, 255, 255, 0.34) 0 1px, transparent 2px),
    radial-gradient(circle at 78% 16%, rgba(255, 255, 255, 0.46) 0 1px, transparent 2px),
    linear-gradient(180deg, rgba(2, 6, 16, 0.2) 0%, rgba(2, 6, 16, 0.42) 100%);
  pointer-events: none;
  z-index: 1;
}

.rocket-archive-btn img {
  position: relative;
  z-index: 2;
  display: block;
  width: 100%;
  height: 86px;
  object-fit: cover;
  object-position: 0% 100%;
  background-color: #02050d;
  border-bottom: 1px solid rgba(8, 63, 104, 0.14);
  filter: saturate(1.05) contrast(1.12) brightness(1.08);
  transition: transform 180ms ease;
}

.rocket-archive-btn span {
  position: relative;
  z-index: 2;
  display: block;
  text-align: center;
  padding: 0.45rem 0.65rem;
  font-size: 0.88rem;
}

.rocket-archive-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(8, 63, 104, 0.17);
}

.rocket-archive-btn:hover img {
  transform: scale(1.025);
}

.rocket-kicker {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  color: var(--ink-soft);
  font-weight: 700;
}

.rocket-detail-grid {
  margin-top: 1rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.rocket-detail-panel {
  background: rgba(234, 247, 255, 0.62);
  border: 1px solid rgba(8, 63, 104, 0.12);
  border-radius: 14px;
  padding: 0.8rem;
}

.rocket-detail-panel h2 {
  margin-top: 0;
  font-family: "Orbitron", sans-serif;
  font-size: 1rem;
  color: #0a3e66;
}

.rocket-blueprint-panel {
  margin-top: 1rem;
  border: 1px solid rgba(8, 63, 104, 0.16);
  border-radius: 14px;
  background: rgba(234, 247, 255, 0.58);
  padding: 0.7rem;
}

.rocket-blueprint-panel h2 {
  margin-top: 0;
  font-family: "Orbitron", sans-serif;
  font-size: 1.05rem;
}

.rocket-blueprint {
  display: block;
  width: 100%;
  height: auto;
}

.page-end-note {
  margin: 0 0 1rem;
  text-align: center;
  font-size: 0.96rem;
  font-weight: 600;
  color: #f2f7ff;
  opacity: 0.9;
}

.space-theme .rocket-blueprint text {
  fill: rgba(255, 255, 255, 0.95) !important;
}

.space-theme .rocket-blueprint path,
.space-theme .rocket-blueprint line,
.space-theme .rocket-blueprint circle,
.space-theme .rocket-blueprint rect,
.space-theme .rocket-blueprint ellipse {
  stroke: rgba(255, 255, 255, 0.75) !important;
}

.space-theme .rocket-blueprint path[d] {
  stroke: rgba(255, 255, 255, 0.75) !important;
}

.space-theme .rocket-blueprint pattern path {
  stroke: rgba(255, 255, 255, 0.25) !important;
}

@media (max-width: 760px) {
  .top-nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .brand-group {
    width: 100%;
    justify-content: space-between;
  }

  .toolbar {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .toolbar-btn,
  .info-btn,
  .close-btn,
  .save-btn {
    width: 100%;
    text-align: center;
    padding: 0.62rem 0.7rem;
  }

  .feature-pills {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .feature-pills .action-pill {
    text-align: center;
  }

  .topic-main,
  main {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  .topic-image img {
    height: 260px;
  }

  .modal {
    width: calc(100% - 1rem);
    max-height: 86vh;
    overflow: auto;
  }

  .settings-row {
    flex-wrap: wrap;
  }

  .settings-row .save-btn {
    width: auto;
  }

  .info-btn {
    align-self: flex-end;
  }

  .sky-bg::after {
    opacity: 0.45;
    right: -14%;
  }

}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .scroll-reveal,
  .scroll-reveal.is-visible {
    opacity: 1 !important;
    transform: none !important;
  }
}