/* ═══════════════════════════════════════
   Sci-Fi Medical / Body Explorer Theme
   ═══════════════════════════════════════ */

:root {
  --bg: #050d1a;
  --bg2: #070f1e;
  --card: #0d1f35;
  --cyan: #00e5ff;
  --purple: #b44fff;
  --green: #39ff14;
  --pink: #ff2d78;
  --muted: #7c9cbc;  /* αρκετά φωτεινό για να διαβάζεται (αντίθεση ≥ 4.5:1) */
  --text: #c8dff0;
  --text-bright: #e8f4ff;
  --border: rgba(0,229,255,0.2);
  --glow-cyan: 0 0 20px rgba(0,229,255,0.15);
  --glow-cyan-strong: 0 0 30px rgba(0,229,255,0.4);
  --glow-pink: 0 0 20px rgba(255,45,120,0.3);
  --glow-green: 0 0 20px rgba(57,255,20,0.3);
  --radius: 16px;
  --sidebar-w: 260px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  padding-top: 44px;
  overflow-x: hidden;
}

.orbitron { font-family: 'Orbitron', 'Comfortaa', monospace; letter-spacing: 0.05em; }

/* ── Particles ── */
.particles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particles span {
  position: absolute;
  display: block;
  border-radius: 50%;
  background: var(--cyan);
  opacity: 0;
  animation: float-particle 12s infinite;
}

.particles span:nth-child(1)  { width:4px; height:4px; left:10%; animation-delay:0s;   animation-duration:14s; }
.particles span:nth-child(2)  { width:3px; height:3px; left:22%; animation-delay:2s;   animation-duration:11s; background:var(--purple); }
.particles span:nth-child(3)  { width:5px; height:5px; left:35%; animation-delay:4s;   animation-duration:16s; }
.particles span:nth-child(4)  { width:2px; height:2px; left:48%; animation-delay:1s;   animation-duration:13s; background:var(--pink); }
.particles span:nth-child(5)  { width:4px; height:4px; left:60%; animation-delay:3s;   animation-duration:15s; }
.particles span:nth-child(6)  { width:3px; height:3px; left:72%; animation-delay:5s;   animation-duration:12s; background:var(--purple); }
.particles span:nth-child(7)  { width:5px; height:5px; left:85%; animation-delay:7s;   animation-duration:17s; }
.particles span:nth-child(8)  { width:2px; height:2px; left:15%; animation-delay:9s;   animation-duration:10s; background:var(--green); }
.particles span:nth-child(9)  { width:4px; height:4px; left:28%; animation-delay:11s;  animation-duration:14s; }
.particles span:nth-child(10) { width:3px; height:3px; left:42%; animation-delay:6s;   animation-duration:13s; background:var(--pink); }
.particles span:nth-child(11) { width:5px; height:5px; left:55%; animation-delay:8s;   animation-duration:16s; background:var(--purple); }
.particles span:nth-child(12) { width:2px; height:2px; left:68%; animation-delay:10s;  animation-duration:11s; }
.particles span:nth-child(13) { width:4px; height:4px; left:78%; animation-delay:0.5s; animation-duration:15s; background:var(--green); }
.particles span:nth-child(14) { width:3px; height:3px; left:90%; animation-delay:2.5s; animation-duration:12s; }
.particles span:nth-child(15) { width:6px; height:6px; left:5%;  animation-delay:4.5s; animation-duration:18s; background:var(--purple); }

@keyframes float-particle {
  0%   { bottom: -10px; opacity: 0; transform: translateX(0); }
  10%  { opacity: 0.6; }
  90%  { opacity: 0.3; }
  100% { bottom: 110vh; opacity: 0; transform: translateX(30px); }
}

/* ── Top Nav ── */
#top-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(5,13,26,0.95);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  min-height: 44px;
}

#top-nav a {
  color: var(--cyan);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 10px;
  font-size: 0.78rem;
  font-weight: 700;
  transition: all 0.2s;
  white-space: nowrap;
}

#top-nav a:hover { background: rgba(0,229,255,0.1); border-color: var(--cyan); box-shadow: var(--glow-cyan); }
#top-nav a.nav-active { background: rgba(0,229,255,0.15); border-color: var(--cyan); color: #fff; }

/* ── App Shell ── */
.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0,1fr);
  min-height: calc(100vh - 44px);
  position: relative;
  z-index: 1;
}

/* ── Sidebar ── */
.sidebar {
  position: sticky;
  top: 44px;
  height: calc(100vh - 44px);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px 12px;
  background: var(--bg2);
  border-right: 1px solid var(--border);
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: var(--bg2); }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(0,229,255,0.05);
  margin-bottom: 4px;
}

.brand-icon {
  font-size: 1.8rem;
  animation: pulse-brand 2s infinite;
  display: block;
}

@keyframes pulse-brand {
  0%,100% { transform: scale(1); filter: drop-shadow(0 0 4px var(--pink)); }
  50% { transform: scale(1.15); filter: drop-shadow(0 0 10px var(--pink)); }
}

.brand strong { display: block; font-family: 'Orbitron', 'Comfortaa', monospace; font-size: 0.75rem; color: var(--cyan); }
.brand small { display: block; color: var(--muted); font-size: 0.68rem; margin-top: 2px; }

.section-nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }

.nav-link {
  width: 100%;
  text-align: left;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 9px 12px;
  background: transparent;
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.nav-link:hover {
  background: rgba(0,229,255,0.07);
  border-color: var(--border);
  color: var(--cyan);
}

.nav-link.active {
  background: rgba(0,229,255,0.12);
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: var(--glow-cyan);
}

/* Mascot widget */
.mascot-widget {
  margin-top: auto;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(0,229,255,0.04);
  text-align: center;
}

.mascot-avatar { font-size: 2rem; display: block; margin-bottom: 4px; }
.mascot-name { font-family: 'Orbitron', 'Comfortaa', monospace; font-size: 0.65rem; color: var(--cyan); margin-bottom: 6px; }

.mascot-bubble {
  background: rgba(0,229,255,0.08);
  border: 1px solid var(--border);
  border-radius: 10px 10px 10px 2px;
  padding: 8px 10px;
  font-size: 0.75rem;
  color: var(--text);
  line-height: 1.4;
  transition: all 0.3s;
}

/* ── Main Content ── */
.main-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ── Section Screens ── */
.section-screen { display: none; animation: section-in 0.25s ease-out; }
.section-screen.active { display: block; }

@keyframes section-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.section-header { margin-bottom: 20px; }
.section-header h2 { font-size: clamp(1rem,2.5vw,1.4rem); color: var(--cyan); margin-bottom: 6px; }
.section-header p { color: var(--muted); font-size: 0.88rem; }

/* ── Glass Cards ── */
.glass-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--glow-cyan);
}

/* ── Buttons ── */
.cyan-btn {
  display: inline-block;
  background: transparent;
  border: 2px solid var(--cyan);
  border-radius: 10px;
  color: var(--cyan);
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.cyan-btn:hover {
  background: rgba(0,229,255,0.15);
  box-shadow: var(--glow-cyan-strong);
}

.pink-btn {
  display: inline-block;
  background: transparent;
  border: 2px solid var(--pink);
  border-radius: 10px;
  color: var(--pink);
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.pink-btn:hover { background: rgba(255,45,120,0.15); box-shadow: var(--glow-pink); }

.green-btn {
  display: inline-block;
  background: transparent;
  border: 2px solid var(--green);
  border-radius: 10px;
  color: var(--green);
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.green-btn:hover { background: rgba(57,255,20,0.15); box-shadow: var(--glow-green); }

/* ── Profile Section ── */
.profile-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.profile-card, .mission-card { display: flex; flex-direction: column; gap: 12px; }

.avatar-circle {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--purple), var(--cyan));
  display: grid;
  place-items: center;
  font-size: 2rem;
  font-weight: 900;
  color: #fff;
  box-shadow: var(--glow-cyan-strong);
}

.profile-card h3 { font-size: 1.1rem; color: var(--text-bright); margin: 0; }
.profile-card p { color: var(--muted); font-size: 0.85rem; margin: 0; }

.mode-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--muted);
}

.mode-btn {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 12px;
  background: transparent;
  color: var(--text);
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.mode-btn.active-mode {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(0,229,255,0.1);
}

.turn-display { font-size: 0.85rem; color: var(--text); }
.turn-display strong { color: var(--cyan); }

.switch-btn {
  display: inline-block;
  border: 1px solid var(--purple);
  border-radius: 8px;
  padding: 4px 10px;
  background: transparent;
  color: var(--purple);
  font-size: 0.78rem;
  cursor: pointer;
  margin-top: 6px;
  font-family: inherit;
  transition: all 0.2s;
}

.switch-btn:hover { background: rgba(180,79,255,0.15); }

.mission-card h3 { font-size: 0.85rem; color: var(--cyan); margin: 0; }
.mission-card p { color: var(--muted); font-size: 0.83rem; margin: 0; }

.mission-items { display: flex; flex-direction: column; gap: 6px; }

.mission-item {
  padding: 7px 12px;
  border-radius: 8px;
  background: rgba(0,229,255,0.04);
  border: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--muted);
  transition: all 0.3s;
}

.mission-item.done {
  border-color: var(--green);
  color: var(--green);
  background: rgba(57,255,20,0.07);
}

/* ── Body Explorer ── */
.explorer-layout {
  display: grid;
  grid-template-columns: minmax(240px,320px) minmax(0,1fr);
  gap: 16px;
  align-items: start;
}

.body-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
  background: linear-gradient(180deg, rgba(0,229,255,0.03) 0%, rgba(180,79,255,0.03) 100%);
}

.body-svg { width: 100%; max-width: 280px; height: auto; }

.body-outline {
  fill: rgba(13,31,53,0.8);
  stroke: rgba(0,229,255,0.3);
  stroke-width: 2;
  pointer-events: none;
}

.body-area {
  fill: rgba(0,229,255,0.08);
  stroke: rgba(0,229,255,0.35);
  stroke-width: 2;
  cursor: pointer;
  transition: fill 0.25s, stroke 0.25s, filter 0.25s;
}

.body-area:hover {
  fill: rgba(0,229,255,0.25);
  stroke: var(--cyan);
  filter: drop-shadow(0 0 8px var(--cyan));
}

.body-area.selected {
  fill: rgba(0,229,255,0.35);
  stroke: var(--cyan);
  filter: drop-shadow(0 0 12px var(--cyan));
}

/* Heart pulse */
.heart-area {
  animation: heartbeat 1.4s infinite;
  transform-origin: 130px 175px;
}

.heart-area:hover, .heart-area.selected {
  fill: rgba(255,45,120,0.4);
  stroke: var(--pink);
  filter: drop-shadow(0 0 10px var(--pink));
}

@keyframes heartbeat {
  0%,100% { transform: scale(1); }
  25%      { transform: scale(1.06); }
  40%      { transform: scale(0.97); }
  55%      { transform: scale(1.1); }
}

/* Lung breathe */
.lung-area { animation: lung-breathe 3s infinite ease-in-out; transform-origin: 130px 155px; }

@keyframes lung-breathe {
  0%,100% { transform: scale(0.95); opacity: 0.7; }
  50%     { transform: scale(1.05); opacity: 1; }
}

.svg-label { fill: rgba(200,223,240,0.8); font-size: 13px; pointer-events: none; }

/* Discovery Panel */
.discovery-panel {
  min-height: 380px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.discovery-idle {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: 12px;
  text-align: center;
}

.scan-icon { font-size: 3rem; filter: drop-shadow(0 0 10px var(--cyan)); }

.discovery-idle h3 { font-size: 0.85rem; color: var(--cyan); }
.discovery-idle p { color: var(--muted); font-size: 0.83rem; max-width: 220px; }

.scan-lines {
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  animation: scan 2s infinite;
  border-radius: 2px;
}

@keyframes scan {
  0%   { transform: scaleX(0); opacity: 0; }
  50%  { transform: scaleX(1); opacity: 1; }
  100% { transform: scaleX(0); opacity: 0; }
}

.organ-name { font-family: 'Orbitron', 'Comfortaa', monospace; font-size: 1.1rem; color: var(--cyan); }
.organ-emoji { font-size: 3rem; display: block; margin: 8px 0; filter: drop-shadow(0 0 12px var(--cyan)); }
.mascot-tag {
  display: inline-block;
  background: rgba(180,79,255,0.15);
  border: 1px solid var(--purple);
  border-radius: 20px;
  padding: 3px 10px;
  font-size: 0.75rem;
  color: var(--purple);
}

.organ-desc { color: var(--text); font-size: 0.88rem; line-height: 1.6; }
.organ-fact {
  background: rgba(0,229,255,0.07);
  border-left: 3px solid var(--cyan);
  padding: 8px 12px;
  border-radius: 0 8px 8px 0;
  font-size: 0.83rem;
  color: var(--text);
}

.collected-badge {
  display: inline-block;
  background: rgba(57,255,20,0.15);
  border: 1px solid var(--green);
  border-radius: 8px;
  padding: 4px 12px;
  font-size: 0.78rem;
  color: var(--green);
}

/* Journey Station Map */
.journey-map-container { padding: 16px 20px; }

.station-progress-bar {
  height: 4px;
  background: rgba(0,229,255,0.1);
  border-radius: 2px;
  margin-bottom: 14px;
  overflow: hidden;
}

.station-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  border-radius: 2px;
  transition: width 0.5s ease;
  width: 0%;
}

.station-map {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px,1fr));
  gap: 8px;
}

.station-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  background: rgba(0,229,255,0.03);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.station-card:hover { border-color: var(--cyan); box-shadow: var(--glow-cyan); }

.station-card.completed {
  border-color: var(--green);
  background: rgba(57,255,20,0.06);
  box-shadow: var(--glow-green);
}

.station-icon { font-size: 1.4rem; display: block; margin-bottom: 4px; }
.station-name { font-size: 0.7rem; color: var(--text); font-weight: 700; display: block; }
.station-check { color: var(--green); font-size: 0.9rem; }

/* ── Organs Drag & Drop ── */
.builder-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.organ-palette {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.organ-piece {
  border: 2px solid var(--border);
  border-radius: 12px;
  background: rgba(0,229,255,0.05);
  padding: 14px 10px;
  text-align: center;
  cursor: grab;
  transition: all 0.2s;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  touch-action: none;
  user-select: none;
  position: relative;
}

.organ-piece .piece-emoji { font-size: 1.8rem; display: block; margin-bottom: 4px; }
.organ-piece:hover { border-color: var(--cyan); box-shadow: var(--glow-cyan); color: var(--cyan); transform: translateY(-2px); }
.organ-piece.dragging { opacity: 0.5; transform: scale(0.95); }
.organ-piece.placed { opacity: 0.3; pointer-events: none; }

.body-drop-zone {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.drop-slot {
  min-height: 70px;
  border: 2px dashed var(--border);
  border-radius: 12px;
  background: rgba(0,229,255,0.03);
  display: flex;
  align-items: center;
  padding: 12px 16px;
  gap: 10px;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}

.drop-slot.drag-over {
  border-color: var(--cyan);
  background: rgba(0,229,255,0.1);
  box-shadow: var(--glow-cyan);
}

.drop-slot.correct {
  border-color: var(--green) !important;
  border-style: solid !important;
  background: rgba(57,255,20,0.1) !important;
  box-shadow: var(--glow-green) !important;
}

.drop-slot.wrong { animation: slot-shake 0.4s ease; }

@keyframes slot-shake {
  0%,100% { transform: translateX(0); }
  20%  { transform: translateX(-6px); }
  40%  { transform: translateX(6px); }
  60%  { transform: translateX(-4px); }
  80%  { transform: translateX(4px); }
}

.slot-label { font-size: 0.85rem; font-weight: 700; color: var(--text); }
.slot-hint { font-size: 0.72rem; color: var(--muted); margin-left: auto; }
.slot-success { font-size: 0.8rem; color: var(--green); font-weight: 700; margin-left: auto; }

.builder-feedback {
  margin-top: 12px;
  min-height: 36px;
  font-size: 0.88rem;
  font-weight: 700;
  text-align: center;
  padding: 8px;
  border-radius: 8px;
  transition: all 0.3s;
}

.builder-feedback.success { color: var(--green); background: rgba(57,255,20,0.08); }
.builder-feedback.error   { color: var(--pink); background: rgba(255,45,120,0.08); }
.builder-feedback.celebrate { color: var(--cyan); background: rgba(0,229,255,0.08); }

/* ── Senses ── */
.senses-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.sense-btn {
  border: 2px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  padding: 18px 10px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  color: var(--text);
  position: relative;
  overflow: hidden;
}

.sense-btn:hover {
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
  transform: translateY(-3px);
}

.sense-btn.active {
  border-color: var(--cyan);
  background: rgba(0,229,255,0.12);
  box-shadow: var(--glow-cyan-strong);
  color: var(--cyan);
}

.sense-emoji { font-size: 2rem; display: block; margin-bottom: 8px; }
.sense-name  { font-size: 0.78rem; font-weight: 700; display: block; }

.sense-detail {
  padding: 16px 20px;
}

.sense-detail-inner { display: flex; gap: 14px; align-items: flex-start; }
.sense-detail-emoji { font-size: 2.5rem; flex-shrink: 0; }
.sense-detail h3 { font-family: 'Orbitron', 'Comfortaa', monospace; font-size: 0.85rem; color: var(--cyan); margin-bottom: 4px; }
.sense-detail .sense-organ { font-size: 0.78rem; color: var(--purple); margin-bottom: 6px; }
.sense-detail p { font-size: 0.85rem; color: var(--text); }

.senses-progress {
  text-align: center;
  font-family: 'Orbitron', 'Comfortaa', monospace;
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 12px;
}

.senses-progress #sensesCount { color: var(--cyan); font-size: 1.2rem; }

/* ── Digestion ── */
.digestion-card { display: flex; flex-direction: column; gap: 20px; align-items: center; }

.digestion-steps {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
}

.dig-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 16px;
  border: 2px solid var(--border);
  border-radius: 12px;
  background: rgba(0,229,255,0.03);
  transition: all 0.4s;
  min-width: 80px;
}

.dig-step.active {
  border-color: var(--cyan);
  background: rgba(0,229,255,0.15);
  box-shadow: var(--glow-cyan-strong);
  transform: scale(1.08);
}

.step-icon { font-size: 1.8rem; }
.step-name { font-size: 0.72rem; font-weight: 700; color: var(--text); text-align: center; }
.dig-arrow { font-size: 1.2rem; color: var(--muted); }

.food-traveler {
  font-size: 2rem;
  position: relative;
  height: 48px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 0 20px;
  overflow: hidden;
}

.food-traveler span {
  display: inline-block;
  animation: none;
  transition: transform 0.8s ease;
  filter: drop-shadow(0 0 8px var(--green));
}

.digestion-info {
  text-align: center;
  font-size: 0.88rem;
  color: var(--text);
  min-height: 24px;
  font-weight: 600;
}

/* ── Habits ── */
.habits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px,1fr));
  gap: 14px;
}

.habit-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  padding: 18px;
  text-align: center;
  box-shadow: var(--glow-cyan);
  transition: all 0.2s;
}

.habit-card.done {
  border-color: var(--green);
  box-shadow: var(--glow-green);
}

.habit-emoji { font-size: 2.2rem; display: block; margin-bottom: 8px; }
.habit-name  { font-weight: 700; font-size: 0.88rem; color: var(--text-bright); display: block; margin-bottom: 6px; }
.habit-tip   { font-size: 0.75rem; color: var(--muted); display: block; margin-bottom: 12px; }

/* ── Collections ── */
.collections-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px,1fr));
  gap: 12px;
}

.collection-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  padding: 16px;
  text-align: center;
  box-shadow: var(--glow-cyan);
  transition: all 0.3s;
}

.collection-card.earned {
  border-color: var(--cyan);
  background: rgba(0,229,255,0.06);
}

.collection-card.locked { opacity: 0.35; filter: grayscale(1); }

.coll-icon  { font-size: 2rem; display: block; margin-bottom: 6px; }
.coll-name  { font-size: 0.78rem; font-weight: 700; color: var(--text); display: block; margin-bottom: 2px; }
.coll-type  { font-size: 0.68rem; color: var(--muted); }

/* ── Progress ── */
.progress-container { display: flex; flex-direction: column; gap: 14px; }

.progress-section {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  padding: 16px 20px;
  box-shadow: var(--glow-cyan);
}

.progress-label { font-family: 'Orbitron', 'Comfortaa', monospace; font-size: 0.75rem; color: var(--cyan); margin-bottom: 8px; display: flex; justify-content: space-between; }
.progress-label span:last-child { color: var(--text); }

.progress-bar {
  height: 8px;
  background: rgba(0,229,255,0.1);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  border-radius: 4px;
  transition: width 0.6s ease;
}

.total-progress {
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan-strong);
}

.total-percent {
  font-family: 'Orbitron', 'Comfortaa', monospace;
  font-size: 2rem;
  color: var(--cyan);
  text-align: center;
  display: block;
  margin: 8px 0;
}

/* ── Collect animation ── */
@keyframes collect-pop {
  0%   { transform: scale(0.5) rotate(-10deg); opacity: 0; }
  60%  { transform: scale(1.2) rotate(5deg); opacity: 1; }
  100% { transform: scale(1) rotate(0); opacity: 1; }
}

.collect-anim { animation: collect-pop 0.4s ease-out; }

/* ── Celebration banner ── */
.celebrate-banner {
  position: fixed;
  top: 60px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--card), rgba(0,229,255,0.15));
  border: 2px solid var(--cyan);
  border-radius: 14px;
  padding: 14px 24px;
  font-family: 'Orbitron', 'Comfortaa', monospace;
  font-size: 0.9rem;
  color: var(--cyan);
  box-shadow: var(--glow-cyan-strong);
  z-index: 200;
  animation: banner-in 0.3s ease-out, banner-out 0.4s ease-in 3s forwards;
  white-space: nowrap;
}

@keyframes banner-in {
  from { transform: translateX(-50%) translateY(-20px); opacity: 0; }
  to   { transform: translateX(-50%) translateY(0); opacity: 1; }
}

@keyframes banner-out {
  from { transform: translateX(-50%) translateY(0); opacity: 1; }
  to   { transform: translateX(-50%) translateY(-20px); opacity: 0; }
}

/* ── Προσβασιμότητα ── */
/* Ορατό περίγραμμα όταν κάτι έχει focus από το πληκτρολόγιο (Tab) */
.station-card:focus-visible,
.organ-piece:focus-visible,
.drop-slot:focus-visible,
.body-area:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 2px;
}
/* Όργανο που διάλεξες με κλικ/πληκτρολόγιο και περιμένει να μπει σε θέση */
.organ-piece.picked { border-color: var(--cyan); box-shadow: var(--glow-cyan-strong); color: var(--cyan); }

/* Αν ο υπολογιστής ζητά «λιγότερη κίνηση», σταματάμε τα κινούμενα εφέ
   (σωματίδια, καρδιά που χτυπά, πνεύμονες που αναπνέουν κ.λπ.) */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .particles { display: none; }
}

/* ── Responsive ── */
@media (max-width: 1000px) {
  .explorer-layout { grid-template-columns: 1fr; }
  .builder-layout  { grid-template-columns: 1fr; }
  .profile-grid    { grid-template-columns: 1fr; }
  .senses-grid     { grid-template-columns: repeat(3,1fr); }
}

@media (max-width: 760px) {
  :root { --sidebar-w: 200px; }
  body { padding-top: 80px; }
  .senses-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 600px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar   { position: static; height: auto; flex-direction: row; flex-wrap: wrap; padding: 10px; }
  .sidebar .mascot-widget { display: none; }
  .section-nav { flex-direction: row; flex-wrap: wrap; }
  .nav-link { width: auto; }
  .senses-grid { grid-template-columns: repeat(2,1fr); }
  .station-map { grid-template-columns: repeat(3,1fr); }
}