/* ============================================================
   Apollo Missions — Main Stylesheet
   Dark space theme matching SpaceApp design language
   ============================================================ */

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:            #000008;
  --panel-bg:      rgba(4, 6, 22, 0.85);
  --panel-border:  rgba(255, 255, 255, 0.08);
  --text:          #ffffff;
  --text-high:     rgba(255, 255, 255, 0.92);
  --text-mid:      rgba(255, 255, 255, 0.62);
  --text-low:      rgba(255, 255, 255, 0.35);
  --accent:        #5082ff;
  --accent-dim:    rgba(80, 130, 255, 0.18);
  --btn-border:    rgba(255, 255, 255, 0.12);
  --radius-pill:   22px;
  --radius-card:   12px;
  --radius-sm:     8px;
  --ease:          cubic-bezier(0.4, 0, 0.2, 1);
  --header-h:      64px;
  --sidebar-w:     230px;
  --transition:    0.25s var(--ease);
  --nav-h:       44px;
}

html {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  height: 100%;
  overflow: hidden;
}

body {
  height: 100%;
  overflow: hidden;
}

/* --- Scrollbar Styling --- */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.28);
}

/* --- Star Background --- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(20, 40, 120, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 70%, rgba(10, 20, 80, 0.15) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 50%, rgba(0, 0, 20, 0.6) 0%, transparent 100%),
    var(--bg);
  pointer-events: none;
}

/* Procedural stars */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image:
    radial-gradient(1px 1px at 12% 18%, rgba(255,255,255,0.55) 0%, transparent 100%),
    radial-gradient(1px 1px at 34% 8%,  rgba(255,255,255,0.40) 0%, transparent 100%),
    radial-gradient(1px 1px at 56% 22%, rgba(255,255,255,0.60) 0%, transparent 100%),
    radial-gradient(1px 1px at 78% 5%,  rgba(255,255,255,0.45) 0%, transparent 100%),
    radial-gradient(1px 1px at 90% 33%, rgba(255,255,255,0.35) 0%, transparent 100%),
    radial-gradient(1px 1px at 6%  44%, rgba(255,255,255,0.50) 0%, transparent 100%),
    radial-gradient(1px 1px at 23% 58%, rgba(255,255,255,0.38) 0%, transparent 100%),
    radial-gradient(1px 1px at 45% 72%, rgba(255,255,255,0.52) 0%, transparent 100%),
    radial-gradient(1px 1px at 67% 88%, rgba(255,255,255,0.42) 0%, transparent 100%),
    radial-gradient(1px 1px at 83% 61%, rgba(255,255,255,0.58) 0%, transparent 100%),
    radial-gradient(1px 1px at 95% 79%, rgba(255,255,255,0.33) 0%, transparent 100%),
    radial-gradient(1px 1px at 11% 91%, rgba(255,255,255,0.47) 0%, transparent 100%),
    radial-gradient(1px 1px at 29% 37%, rgba(255,255,255,0.36) 0%, transparent 100%),
    radial-gradient(1px 1px at 52% 49%, rgba(255,255,255,0.53) 0%, transparent 100%),
    radial-gradient(1px 1px at 74% 14%, rgba(255,255,255,0.41) 0%, transparent 100%),
    radial-gradient(1px 1px at 88% 97%, rgba(255,255,255,0.60) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 40% 65%, rgba(200,220,255,0.45) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 62% 30%, rgba(200,220,255,0.38) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 18% 75%, rgba(200,220,255,0.42) 0%, transparent 100%),
    radial-gradient(2px 2px at 70% 50%,  rgba(220,235,255,0.28) 0%, transparent 100%);
  pointer-events: none;
}

/* ============================================================
   HEADER
   ============================================================ */
#header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: linear-gradient(180deg,
    rgba(4, 6, 22, 0.95) 0%,
    rgba(4, 6, 22, 0.82) 100%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--panel-border);
  box-shadow: 0 4px 32px rgba(0,0,0,0.5);
}

#header-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

#mission-badge {
  font-size: 32px;
  color: var(--accent);
  line-height: 1;
  filter: drop-shadow(0 0 8px rgba(80,130,255,0.6));
  animation: badge-pulse 3s ease-in-out infinite;
}

@keyframes badge-pulse {
  0%, 100% { filter: drop-shadow(0 0 8px rgba(80,130,255,0.6)); }
  50%       { filter: drop-shadow(0 0 16px rgba(80,130,255,0.9)); }
}

#title-block h1 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--text-high);
  line-height: 1.1;
}

#subtitle {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-low);
}

#mission-nav {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
  max-width: 55%;
}

.nav-btn {
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--btn-border);
  background: transparent;
  color: var(--text-mid);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  white-space: nowrap;
}

.nav-btn:hover {
  border-color: rgba(255,255,255,0.28);
  color: var(--text-high);
  background: rgba(255,255,255,0.06);
}

.nav-btn.active {
  border-color: var(--mission-accent, var(--accent));
  color: var(--mission-accent, var(--accent));
  background: rgba(80,130,255,0.1);
}

/* ============================================================
   APP LAYOUT
   ============================================================ */
#app {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  z-index: 1;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
#sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: rgba(4, 6, 22, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-right: 1px solid var(--panel-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#overview-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  cursor: pointer;
  border-bottom: 1px solid var(--panel-border);
  transition: background var(--transition), color var(--transition);
  flex-shrink: 0;
}

#overview-nav-item:hover {
  background: rgba(80, 130, 255, 0.08);
}

#overview-nav-item.active {
  background: rgba(80, 130, 255, 0.12);
}

#overview-nav-icon {
  font-size: 20px;
  line-height: 1;
  filter: drop-shadow(0 0 6px rgba(80,130,255,0.5));
}

#sidebar-title {
  padding: 18px 18px 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--text-low);
  flex-shrink: 0;
  border-bottom: 1px solid var(--panel-border);
}

#mission-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

.mission-item {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 10px 16px 10px 20px;
  cursor: pointer;
  transition: background var(--transition);
  border-left: 3px solid transparent;
  margin: 1px 0;
}

.mission-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--item-accent, transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.mission-item:hover {
  background: rgba(255,255,255,0.04);
}

.mission-item:hover::before {
  opacity: 0.6;
}

.mission-item.active {
  background: rgba(255,255,255,0.07);
}

.mission-item.active::before {
  opacity: 1;
}

.mission-item-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-high);
  line-height: 1.2;
  transition: color var(--transition);
}

.mission-item.active .mission-item-name {
  color: var(--item-accent, var(--accent));
}

.mission-item-sub {
  font-size: 13px;
  color: var(--text-low);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mission-item-outcome {
  display: inline-block;
  margin-top: 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 1px 7px;
  border-radius: 4px;
  width: fit-content;
}

.outcome-success  { background: rgba(34,197,94,0.15);  color: #4ade80; }
.outcome-failure  { background: rgba(220,38,38,0.15);   color: #f87171; }
.outcome-partial  { background: rgba(234,179,8,0.15);   color: #facc15; }

/* ============================================================
   MAIN CONTENT
   ============================================================ */
#content {
  flex: 1;
  overflow-y: auto;
  padding: 28px 32px 48px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-width: 0;
}

/* ============================================================
   HIDDEN UTILITY
   ============================================================ */
.hidden { display: none !important; }

/* ============================================================
   PROGRAM OVERVIEW
   ============================================================ */
#program-overview {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

#overview-hero {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-card);
  padding: 48px 48px 44px;
  position: relative;
  overflow: hidden;
}

#overview-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), rgba(80,130,255,0.2));
}

#overview-hero::after {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(80,130,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}

#overview-eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 14px;
}

#overview-title {
  font-size: 52px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--text-high);
  line-height: 1.05;
  margin-bottom: 10px;
}

#overview-tagline {
  font-size: 20px;
  color: var(--text-mid);
  margin-bottom: 32px;
  letter-spacing: 0.02em;
}

#overview-quote {
  border-left: 2px solid var(--accent);
  padding-left: 20px;
  max-width: 680px;
  font-size: 18px;
  font-style: italic;
  color: var(--text-mid);
  line-height: 1.7;
}

#overview-quote cite {
  display: block;
  margin-top: 10px;
  font-size: 15px;
  font-style: normal;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-low);
}

/* Stats row */
#overview-stats-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.overview-stat {
  flex: 1;
  min-width: 120px;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-card);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.os-value {
  font-size: 35px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.02em;
}

.os-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-low);
}

/* Body: goals + timeline side by side */
#overview-body {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 20px;
  align-items: start;
}

#overview-goals-panel,
#overview-timeline-panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-card);
  padding: 28px 32px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.overview-section-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--text-low);
  margin-bottom: 16px;
}

#overview-goals-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#overview-goals-list li {
  padding-left: 16px;
  position: relative;
  font-size: 16px;
  color: var(--text-mid);
  line-height: 1.65;
}

#overview-goals-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 12px;
  top: 3px;
}

.overview-body-text {
  font-size: 16px;
  color: var(--text-mid);
  line-height: 1.7;
  margin-bottom: 12px;
}

/* Timeline */
#overview-timeline-list {
  display: flex;
  flex-direction: column;
}

.tl-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--panel-border);
  cursor: pointer;
  transition: background var(--transition);
  border-radius: 6px;
  padding: 10px 8px;
  margin: 0 -8px;
}

.tl-item:last-child {
  border-bottom: none;
}

.tl-item:hover {
  background: rgba(255,255,255,0.04);
}

.tl-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 5px;
}

.tl-info {
  flex: 1;
  min-width: 0;
}

.tl-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-high);
  letter-spacing: 0.04em;
}

.tl-sub {
  font-size: 13px;
  color: var(--text-low);
  margin-top: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tl-outcome {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 2px 7px;
  border-radius: 4px;
  flex-shrink: 0;
  align-self: center;
}

.tl-outcome.SUCCESS { background: rgba(34,197,94,0.15); color: #4ade80; }
.tl-outcome.FAILURE { background: rgba(220,38,38,0.15);  color: #f87171; }
.tl-outcome.PARTIAL { background: rgba(234,179,8,0.15);  color: #facc15; }

/* CTA */
#overview-cta {
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-low);
  padding: 8px 0 4px;
}

/* ============================================================
   MISSION HERO
   ============================================================ */
#mission-hero {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-card);
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
  flex-shrink: 0;
  transition: border-color var(--transition);
}

#mission-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--mission-accent, var(--accent));
  opacity: 0.8;
  transition: background var(--transition);
}

#mission-number {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--mission-accent, var(--accent));
  margin-bottom: 6px;
  transition: color var(--transition);
}

#mission-name {
  font-size: 35px;
  font-weight: 700;
  color: var(--text-high);
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin-bottom: 10px;
}

#mission-dates {
  font-size: 15px;
  color: var(--text-mid);
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

#outcome-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

#outcome-badge.SUCCESS {
  background: rgba(34,197,94,0.12);
  border: 1px solid rgba(74,222,128,0.3);
  color: #4ade80;
}
#outcome-badge.FAILURE {
  background: rgba(220,38,38,0.12);
  border: 1px solid rgba(248,113,113,0.3);
  color: #f87171;
}
#outcome-badge.PARTIAL {
  background: rgba(234,179,8,0.12);
  border: 1px solid rgba(250,204,21,0.3);
  color: #facc15;
}

#mission-info {
  width: 100%;
}

/* Crew list — horizontal row along the bottom of the hero */
#crew-list {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 10px;
  width: 100%;
}

.crew-member {
  flex: 1 1 200px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  transition: background var(--transition);
}

.crew-member:hover {
  background: rgba(255,255,255,0.07);
}

.crew-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-high);
}

.crew-role {
  font-size: 13px;
  color: var(--mission-accent, var(--accent));
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-top: 1px;
  transition: color var(--transition);
}

.crew-bio {
  font-size: 13px;
  color: var(--text-low);
  margin-top: 4px;
  line-height: 1.4;
}

/* ============================================================
   VISUALIZATION SECTION
   ============================================================ */
#visualization-section {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-card);
  flex-shrink: 0;
  transition: border-color var(--transition);
  overflow: visible;
}

#viz-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--panel-border);
  background: rgba(4, 6, 22, 0.5);
}

#viz-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--text-low);
}

.viz-hint {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-low);
}

#viz-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.viz-btn {
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--btn-border);
  background: transparent;
  color: var(--text-mid);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.07em;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  font-family: inherit;
  white-space: nowrap;
}

#btn-play {
  min-width: 90px;
}

.viz-btn:hover {
  border-color: var(--mission-accent, var(--accent));
  color: var(--mission-accent, var(--accent));
  background: rgba(80,130,255,0.08);
}

.viz-btn.playing {
  border-color: var(--mission-accent, var(--accent));
  color: var(--mission-accent, var(--accent));
  background: rgba(80,130,255,0.12);
}

#phase-display {
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--btn-border);
  font-size: 13px;
  color: var(--text-mid);
  letter-spacing: 0.06em;
  width: 200px;
  text-align: center;
  transition: color var(--transition);
  min-height: 24px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#flight-time {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--btn-border);
  min-height: 24px;
}

.ft-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--text-low);
}

#ft-value {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--mission-accent, var(--accent));
  font-variant-numeric: tabular-nums;
  transition: color var(--transition);
}

#moon-site-label {
  text-align: center;
  padding: 10px 24px 6px;
  border-bottom: 1px solid var(--panel-border);
}

#moon-site-label .msl-name {
  font-size: 23px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--mission-accent, var(--accent));
}

#moon-site-label .msl-site {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text-mid);
  margin-top: 2px;
}

#flight-canvas {
  display: block;
  width: 100%;
  height: clamp(400px, 55vh, 620px);
  background: transparent;
  cursor: grab;
  border-radius: 0 0 var(--radius-card) var(--radius-card);
}

#flight-canvas:active {
  cursor: grabbing;
}

/* ============================================================
   DETAILS SECTION (Stats + Summary)
   ============================================================ */
#details-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  flex-shrink: 0;
}

#mission-stats,
#mission-summary {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-card);
  padding: 22px 24px;
}

.stats-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--text-low);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--panel-border);
}

#stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 16px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 12px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.stat-item:hover {
  background: rgba(255,255,255,0.06);
}

.stat-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-low);
  text-transform: uppercase;
}

.stat-value {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-high);
  line-height: 1.2;
}

.stat-unit {
  font-size: 12px;
  color: var(--text-low);
  margin-top: 1px;
}

#summary-objectives,
#summary-results {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-mid);
}

#summary-objectives {
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--panel-border);
}

#summary-results {
  color: rgba(255,255,255,0.55);
}

/* ============================================================
   GALLERY SECTION
   ============================================================ */
#gallery-section {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-card);
  padding: 22px 24px;
  flex-shrink: 0;
}

#gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 4px;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4/3;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--panel-border);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.gallery-item:hover {
  transform: scale(1.03);
  border-color: rgba(255,255,255,0.2);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  z-index: 2;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: filter var(--transition);
}

.gallery-item:hover img {
  filter: brightness(1.1);
}

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px 10px 8px;
  background: linear-gradient(transparent, rgba(0,0,10,0.85));
  font-size: 13px;
  color: rgba(255,255,255,0.8);
  line-height: 1.3;
  opacity: 0;
  transition: opacity var(--transition);
}

.gallery-item:hover .gallery-caption {
  opacity: 1;
}

#gallery-loading {
  text-align: center;
  padding: 32px;
  color: var(--text-low);
  font-size: 15px;
  letter-spacing: 0.08em;
}

/* Loading animation */
#gallery-loading.loading::after {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--panel-border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
  margin-left: 8px;
}

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

/* ============================================================
   LIGHTBOX
   ============================================================ */
#lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 10, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  animation: fadeIn 0.2s var(--ease);
}

#lightbox.hidden {
  display: none;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

#lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--panel-border);
  color: var(--text-mid);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 17px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  font-family: inherit;
}

#lightbox-close:hover {
  background: rgba(255,255,255,0.14);
  color: var(--text-high);
}

#lightbox-img {
  max-width: 88vw;
  max-height: 76vh;
  object-fit: contain;
  border-radius: var(--radius-card);
  box-shadow: 0 32px 96px rgba(0,0,0,0.8);
  animation: scaleIn 0.25s var(--ease);
}

@keyframes scaleIn {
  from { transform: scale(0.92); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}

#lightbox-caption {
  font-size: 16px;
  color: var(--text-mid);
  max-width: 600px;
  text-align: center;
  padding: 0 24px;
}

/* ============================================================
   MISSION TRANSITION ANIMATION
   ============================================================ */
.mission-transition {
  animation: missionFadeIn 0.35s var(--ease);
}

@keyframes missionFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   NAV TYPE BADGES
   ============================================================ */
.type-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-left: 6px;
  vertical-align: middle;
}

.type-GROUND        { background: rgba(204,51,0,0.18);   color: #ff6644; }
.type-EARTH_ORBIT   { background: rgba(68,136,255,0.15); color: #77aaff; }
.type-LUNAR_ORBIT   { background: rgba(68,170,255,0.15); color: #88ccff; }
.type-LUNAR_LANDING { background: rgba(255,170,0,0.15);  color: #ffcc44; }
.type-ABORT_RETURN  { background: rgba(255,102,34,0.15); color: #ff8855; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
  :root {
    --sidebar-w: 200px;
  }
  #details-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  :root {
    --sidebar-w: 0px;
    --header-h: 56px;
  }
  #sidebar {
    display: none;
  }
  #content {
    padding: 16px 16px 32px;
    gap: 16px;
  }
  #gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  #stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  #mission-nav {
    display: none;
  }
  #flight-canvas {
    height: clamp(300px, 45vh, 450px);
  }
}

@media (max-width: 560px) {
  #gallery-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   UTILITY
   ============================================================ */
.hidden { display: none !important; }

.fade-enter {
  opacity: 0;
  transform: translateY(6px);
}
.fade-enter-active {
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

/* ── Global nav bar offset (44px) ─────────────────────────────────────────── */
#header { top: var(--nav-h); }
#app    { top: calc(var(--nav-h) + var(--header-h)); }