/* ============================================================
   MYCELIUM NETWORK — Stylesheet
   Aesthetic: Organic bioluminescent dark world
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;600;900&family=Crimson+Pro:ital,wght@0,300;0,400;1,300;1,400&display=swap');

:root {
  --bg-deep:      #050a06;
  --bg-mid:       #0a1210;
  --bg-surface:   #0f1c18;
  --bg-panel:     #0d1914;
  --bg-card:      #112015;

  --glow-green:   #3dffa0;
  --glow-teal:    #2eecd2;
  --glow-amber:   #f5a623;
  --glow-purple:  #c778fa;
  --glow-red:     #ff5c5c;

  --text-bright:  #e8f5ef;
  --text-mid:     #8ab89a;
  --text-dim:     #3d6b50;

  --border:       rgba(61, 255, 160, 0.12);
  --border-glow:  rgba(61, 255, 160, 0.35);

  --font-display: 'Cinzel', serif;
  --font-body:    'Crimson Pro', serif;

  --spore-color:  var(--glow-green);
  --panel-radius: 8px;
}

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

html, body {
  height: 100%;
  background: var(--bg-deep);
  color: var(--text-bright);
  font-family: var(--font-body);
  font-size: 16px;
  overflow: hidden;
}

/* ─── Animated Background ─────────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 80%, rgba(61,255,160,0.04) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 20%, rgba(46,236,210,0.03) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 50% 50%, rgba(10,20,18,0.8) 0%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}

/* ─── Layout ──────────────────────────────────────────────── */
#app {
  position: relative;
  display: grid;
  grid-template-columns: 260px 1fr 280px;
  grid-template-rows: 56px 1fr;
  height: 100vh;
  z-index: 1;
  gap: 0;
}

/* ─── Header ──────────────────────────────────────────────── */
#header {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(5, 10, 6, 0.9);
  backdrop-filter: blur(8px);
}

.header-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--glow-green);
  text-shadow: 0 0 20px rgba(61,255,160,0.5);
}

.header-subtitle {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.78rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.header-stats {
  display: flex;
  gap: 24px;
}

.hstat {
  text-align: right;
}
.hstat-label {
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-transform: uppercase;
  font-family: var(--font-display);
}
.hstat-value {
  font-size: 1rem;
  color: var(--glow-green);
  font-family: var(--font-display);
  font-weight: 600;
  text-shadow: 0 0 12px rgba(61,255,160,0.4);
}

/* ─── Left Panel: Upgrades ────────────────────────────────── */
#panel-left {
  border-right: 1px solid var(--border);
  background: var(--bg-panel);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-title {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  text-transform: uppercase;
  padding: 12px 16px 10px;
  border-bottom: 1px solid var(--border);
}

.upgrade-list {
  flex: 1;
  overflow-y: auto;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.upgrade-list::-webkit-scrollbar { width: 3px; }
.upgrade-list::-webkit-scrollbar-track { background: transparent; }
.upgrade-list::-webkit-scrollbar-thumb { background: var(--text-dim); border-radius: 2px; }

.upgrade-card {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--panel-radius);
  background: var(--bg-card);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, transform 0.1s;
  position: relative;
  overflow: hidden;
}
.upgrade-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(61,255,160,0.05) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.2s;
}
.upgrade-card:hover::before { opacity: 1; }
.upgrade-card.affordable {
  border-color: rgba(61,255,160,0.3);
}
.upgrade-card.affordable:hover {
  border-color: var(--glow-green);
  transform: translateX(2px);
}
.upgrade-card.not-affordable {
  opacity: 0.5;
  cursor: not-allowed;
}

.upgrade-name {
  font-family: var(--font-display);
  font-size: 0.72rem;
  color: var(--glow-green);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}
.upgrade-cost {
  font-size: 0.7rem;
  color: var(--glow-amber);
  font-family: var(--font-display);
  margin-bottom: 4px;
}
.upgrade-desc {
  font-size: 0.72rem;
  color: var(--text-mid);
  line-height: 1.4;
  font-style: italic;
}

/* ─── Center Panel: Main Game ─────────────────────────────── */
#panel-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0;
  overflow: hidden;
  position: relative;
}

/* Network visualization canvas */
#network-canvas {
  position: absolute;
  inset: 0;
  opacity: 0.6;
  pointer-events: none;
}

.center-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 20px;
}

/* Spore Counter */
.spore-display {
  text-align: center;
}
.spore-count {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--glow-green);
  text-shadow:
    0 0 30px rgba(61,255,160,0.6),
    0 0 60px rgba(61,255,160,0.2);
  letter-spacing: -0.02em;
  line-height: 1;
}
.spore-label {
  font-family: var(--font-body);
  font-style: italic;
  color: var(--text-mid);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  margin-top: 4px;
}
.spore-rate {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 6px;
  letter-spacing: 0.08em;
}

/* The Spore Button */
.spore-btn-wrap {
  position: relative;
}

#spore-btn {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 2px solid rgba(61,255,160,0.3);
  background: radial-gradient(circle at 40% 35%,
    rgba(61,255,160,0.18) 0%,
    rgba(61,255,160,0.04) 50%,
    transparent 70%
  );
  cursor: pointer;
  position: relative;
  transition: transform 0.08s, border-color 0.2s, box-shadow 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  overflow: hidden;
  box-shadow:
    0 0 40px rgba(61,255,160,0.1),
    inset 0 0 30px rgba(61,255,160,0.05);
}

#spore-btn::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  background: conic-gradient(
    rgba(61,255,160,0.4) 0deg,
    transparent 60deg,
    transparent 300deg,
    rgba(61,255,160,0.4) 360deg
  );
  animation: rotate 4s linear infinite;
  z-index: -1;
}

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

#spore-btn:hover {
  transform: scale(1.05);
  border-color: rgba(61,255,160,0.6);
  box-shadow: 0 0 60px rgba(61,255,160,0.2), inset 0 0 40px rgba(61,255,160,0.08);
}
#spore-btn:active {
  transform: scale(0.95);
}

.btn-icon {
  font-size: 2.6rem;
  line-height: 1;
  filter: drop-shadow(0 0 8px rgba(61,255,160,0.5));
}
.btn-label {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--text-mid);
  text-transform: uppercase;
}

/* Floating +number pop */
.float-pop {
  position: absolute;
  pointer-events: none;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--glow-green);
  text-shadow: 0 0 10px rgba(61,255,160,0.5);
  font-size: 0.9rem;
  animation: floatUp 1s ease-out forwards;
  white-space: nowrap;
}
@keyframes floatUp {
  0%   { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(-60px) scale(0.8); }
}

/* Milestone Toast */
#milestone-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: linear-gradient(135deg, var(--bg-card), var(--bg-surface));
  border: 1px solid rgba(245,166,35,0.4);
  border-radius: 10px;
  padding: 12px 20px;
  text-align: center;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.4s;
  opacity: 0;
  z-index: 100;
  min-width: 240px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5), 0 0 20px rgba(245,166,35,0.1);
}
#milestone-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}
.toast-icon { font-size: 1.6rem; }
.toast-name {
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--glow-amber);
  letter-spacing: 0.1em;
  margin-top: 2px;
}
.toast-desc {
  font-style: italic;
  color: var(--text-mid);
  font-size: 0.75rem;
  margin-top: 2px;
}

/* ─── Right Panel: Structures ─────────────────────────────── */
#panel-right {
  border-left: 1px solid var(--border);
  background: var(--bg-panel);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.structure-list {
  flex: 1;
  overflow-y: auto;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.structure-list::-webkit-scrollbar { width: 3px; }
.structure-list::-webkit-scrollbar-thumb { background: var(--text-dim); border-radius: 2px; }

.structure-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto auto;
  gap: 2px 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--panel-radius);
  background: var(--bg-card);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, transform 0.1s;
  position: relative;
  overflow: hidden;
}
.structure-card .struct-fill {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 0%;
  background: rgba(61,255,160,0.04);
  transition: width 0.4s;
  pointer-events: none;
}
.structure-card.affordable {
  border-color: rgba(61,255,160,0.25);
}
.structure-card.affordable:hover {
  border-color: rgba(61,255,160,0.5);
  transform: translateX(-2px);
  background: #142219;
}
.structure-card.locked {
  opacity: 0.35;
  cursor: not-allowed;
}

.struct-icon {
  grid-row: 1 / 3;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  color: var(--glow-green);
  filter: drop-shadow(0 0 5px rgba(61,255,160,0.4));
}
.struct-name {
  font-family: var(--font-display);
  font-size: 0.72rem;
  color: var(--text-bright);
  letter-spacing: 0.04em;
  align-self: end;
}
.struct-count {
  grid-row: 1 / 3;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--glow-green);
  text-shadow: 0 0 10px rgba(61,255,160,0.3);
  display: flex;
  align-items: center;
}
.struct-cost {
  font-size: 0.68rem;
  color: var(--glow-amber);
  font-family: var(--font-display);
  align-self: start;
}

/* Production bar beneath */
.struct-bar {
  height: 2px;
  background: rgba(61,255,160,0.1);
  border-radius: 1px;
  margin-top: 6px;
  overflow: hidden;
  grid-column: 1 / -1;
}
.struct-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--glow-green), var(--glow-teal));
  border-radius: 1px;
  transition: width 1s linear;
  box-shadow: 0 0 4px var(--glow-green);
}

/* ─── Tabs in panels ──────────────────────────────────────── */
.tab-row {
  display: flex;
  border-bottom: 1px solid var(--border);
}
.tab-btn {
  flex: 1;
  padding: 8px 4px;
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  background: none;
  border: none;
  cursor: pointer;
  transition: color 0.2s;
  border-bottom: 2px solid transparent;
}
.tab-btn.active {
  color: var(--glow-green);
  border-bottom-color: var(--glow-green);
}

/* Milestones tab */
.milestone-list {
  flex: 1;
  overflow-y: auto;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.milestone-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--panel-radius);
  background: var(--bg-card);
}
.milestone-item.achieved {
  border-color: rgba(245,166,35,0.3);
}
.milestone-item.locked {
  opacity: 0.4;
}
.ms-icon { font-size: 1.2rem; }
.ms-name {
  font-family: var(--font-display);
  font-size: 0.68rem;
  color: var(--glow-amber);
  letter-spacing: 0.05em;
}
.ms-desc {
  font-style: italic;
  color: var(--text-mid);
  font-size: 0.68rem;
}
.ms-req {
  font-family: var(--font-display);
  font-size: 0.6rem;
  color: var(--text-dim);
  margin-top: 2px;
}

/* Stats tab */
.stats-grid {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
}
.stat-label {
  font-style: italic;
  color: var(--text-mid);
  font-size: 0.78rem;
}
.stat-val {
  font-family: var(--font-display);
  font-size: 0.78rem;
  color: var(--glow-green);
  font-weight: 600;
}

/* Prestige button */
.prestige-zone {
  padding: 12px;
  border-top: 1px solid var(--border);
}
.prestige-btn {
  width: 100%;
  padding: 10px;
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--glow-purple);
  background: rgba(199,120,250,0.08);
  border: 1px solid rgba(199,120,250,0.3);
  border-radius: var(--panel-radius);
  cursor: pointer;
  transition: all 0.2s;
}
.prestige-btn:hover:not(:disabled) {
  background: rgba(199,120,250,0.15);
  border-color: rgba(199,120,250,0.6);
  box-shadow: 0 0 20px rgba(199,120,250,0.1);
}
.prestige-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Depth indicator */
.depth-bar {
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border);
  background: rgba(0,0,0,0.2);
}
.depth-label {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-transform: uppercase;
  white-space: nowrap;
}
.depth-track {
  flex: 1;
  height: 4px;
  background: rgba(61,255,160,0.1);
  border-radius: 2px;
  overflow: hidden;
}
.depth-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--glow-teal), var(--glow-green));
  border-radius: 2px;
  box-shadow: 0 0 6px var(--glow-teal);
  transition: width 0.5s;
}
.depth-val {
  font-family: var(--font-display);
  font-size: 0.7rem;
  color: var(--glow-teal);
  white-space: nowrap;
}

/* ─── Scrollbar global ────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-dim); border-radius: 2px; }

/* ─── Animations ──────────────────────────────────────────── */
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(61,255,160,0.1); }
  50% { box-shadow: 0 0 40px rgba(61,255,160,0.25); }
}

.glow-pulse {
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes spore-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hidden { display: none !important; }