:root {
  --deep: #03111f;
  --mid: #062a45;
  --surface: #0a3d5e;
  --glow: #00c8ff;
  --glow2: #00ffcc;
  --accent: #ff6b35;
  --amazon: #ff9900;
  --text: #d0eeff;
  --muted: #5c8aaa;
  --glass: rgba(0,200,255,0.06);
  --glass-border: rgba(0,200,255,0.18);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--deep);
  color: var(--text);
  font-family: 'Space Mono', monospace;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 30px 20px 60px;
  overflow-x: hidden;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse at 20% 80%, rgba(0,80,160,0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(0,160,120,0.15) 0%, transparent 50%);
  pointer-events: none; z-index: 0;
}
.bubble {
  position: fixed; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(0,200,255,0.4), rgba(0,200,255,0.05));
  border: 1px solid rgba(0,200,255,0.2);
  animation: rise linear infinite; pointer-events: none; z-index: 0;
}
@keyframes rise {
  0%   { transform: translateY(110vh) scale(1);   opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 0.6; }
  100% { transform: translateY(-10vh) scale(1.1); opacity: 0; }
}
header { position: relative; z-index: 1; text-align: center; margin-bottom: 36px; }
header h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 5vw, 3.2rem);
  color: #fff; letter-spacing: 2px;
  text-shadow: 0 0 30px rgba(0,200,255,0.5);
}
header h1 span { color: var(--glow); }
header p { max-width:900px; margin-top: 8px; color: var(--text); font-size: 0.78rem; letter-spacing: 2px; text-transform: uppercase; }

.main-grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 28px; width: 100%; max-width: 1100px;
}
.panel {
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: 16px; padding: 28px; backdrop-filter: blur(4px);
}
@media(max-width:420px) {
  .panel {
    padding:15px;
  }
}
.panel h2 { font-family: 'Playfair Display', serif; font-size: 1.1rem; margin-bottom: 22px; letter-spacing: 1px; }
.full-width { grid-column: 1 / -1; }

/* ── TANK ── */
.tank-panel { display: flex; flex-direction: column; align-items: center; }
.tank-panel h2 { color: var(--glow); align-self: flex-start; }
.tank-3d-wrapper { perspective: 800px; margin-bottom: 24px; }
.tank-scene {
  position: relative; transform-style: preserve-3d;
  transform: rotateX(8deg) rotateY(-8deg);
  transition: width 0.4s, height 0.4s;
}
.tank-face {
  position: absolute; border: 2px solid rgba(0,200,255,0.5);
  background: rgba(0,80,160,0.25); backdrop-filter: blur(2px); transition: all 0.4s;
}
.tank-face.front {
  background: linear-gradient(160deg, rgba(0,150,255,0.22) 0%, rgba(0,60,120,0.35) 100%);
  border-color: rgba(0,200,255,0.7);
  box-shadow: inset 0 0 40px rgba(0,200,255,0.08), 0 0 20px rgba(0,200,255,0.15);
  border-radius: 4px 4px 2px 2px; overflow: hidden;
}
.tank-face.front::after {
  content: ''; position: absolute; inset: 0;
  background: repeating-linear-gradient(0deg, transparent, transparent 18px, rgba(0,200,255,0.04) 18px, rgba(0,200,255,0.04) 19px);
  animation: shimmer 4s linear infinite;
}
.tank-face.front::before {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 14%;
  background: linear-gradient(0deg, rgba(80,50,20,0.7), rgba(100,70,30,0.3));
  border-top: 1px solid rgba(200,150,50,0.3); z-index: 1;
}
@keyframes shimmer { 0% { background-position: 0 0; } 100% { background-position: 0 40px; } }
.tank-face.top    { background: linear-gradient(180deg, rgba(0,200,255,0.25), rgba(0,100,200,0.15)); border-color: rgba(0,220,255,0.5); }
.tank-face.right  { background: linear-gradient(90deg, rgba(0,60,120,0.4), rgba(0,80,160,0.2)); border-color: rgba(0,150,200,0.4); }
.tank-face.bottom { background: rgba(20,40,60,0.7); border-color: rgba(0,100,150,0.4); }
.fish-icon {
  position: absolute; font-size: 16px;
  animation: swim 6s ease-in-out infinite; z-index: 2;
  filter: drop-shadow(0 0 4px rgba(0,200,255,0.5));
}
.fish-icon:nth-child(2) { animation-delay: -2s; top: 30%; left: 20%; }
.fish-icon:nth-child(3) { animation-delay: -4s; top: 55%; left: 55%; font-size: 12px; }
.fish-icon:nth-child(4) { animation-delay: -1s; top: 20%; left: 60%; font-size: 20px; }
@keyframes swim {
  0%   { transform: translateX(0px) scaleX(1); }
  45%  { transform: translateX(40px) scaleX(1); }
  50%  { transform: translateX(40px) scaleX(-1); }
  95%  { transform: translateX(0px) scaleX(-1); }
  100% { transform: translateX(0px) scaleX(1); }
}
.volume-badge {
  background: linear-gradient(135deg, var(--mid), var(--surface));
  border: 1px solid var(--glass-border); border-radius: 10px;
  padding: 12px 24px; text-align: center; width: 100%; margin-top: 8px;
}
.volume-badge .vol-num { font-family: 'Playfair Display', serif; font-size: 2rem; color: var(--glow); text-shadow: 0 0 20px rgba(0,200,255,0.4); }
.volume-badge .vol-label { font-size: 0.7rem; color: var(--muted); letter-spacing: 2px; text-transform: uppercase; }

/* ── SLIDERS ── */
.sliders-panel h2 { color: var(--glow2); }
.slider-group { margin-bottom: 24px; }
.slider-label-row { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; }
.dim-name  { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 2px; color: var(--muted); }
.dim-value { font-family: 'Playfair Display', serif; font-size: 1.3rem; color: #fff; }
.dim-unit  { font-size: 0.7rem; color: var(--muted); margin-left: 3px; }
input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 4px; border-radius: 2px; outline: none; cursor: pointer; }
input[type=range].width-slider  { background: linear-gradient(90deg, var(--glow), var(--mid)); }
input[type=range].depth-slider  { background: linear-gradient(90deg, var(--glow2), var(--mid)); }
input[type=range].height-slider { background: linear-gradient(90deg, #a78bfa, var(--mid)); }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%; background: #fff; border: 3px solid var(--glow); box-shadow: 0 0 10px rgba(0,200,255,0.5); }
input[type=range].depth-slider::-webkit-slider-thumb  { border-color: var(--glow2); }
input[type=range].height-slider::-webkit-slider-thumb { border-color: #a78bfa; }
.slider-ticks { display: flex; justify-content: space-between; margin-top: 5px; font-size: 0.6rem; color: var(--muted); }

/* ── FISH LIST ── */
.fish-panel h2 { color: var(--accent); }
.subtitle { font-size: 0.7rem; color: var(--muted); margin-bottom: 22px; letter-spacing: 1px; margin-top: -10px; }
.fish-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
.fish-card {
  background: linear-gradient(135deg, rgba(0,60,100,0.5), rgba(0,30,60,0.6));
  border: 1px solid rgba(0,200,255,0.12); border-radius: 12px; padding: 14px 16px;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  animation: fadeIn 0.3s ease both;
}
.fish-card:hover { transform: translateY(-3px); border-color: rgba(0,200,255,0.4); box-shadow: 0 8px 24px rgba(0,0,0,0.4); }
@keyframes fadeIn { from { opacity:0; transform:translateY(10px); } to { opacity:1; transform:translateY(0); } }
.fish-emoji { font-size: 1.6rem; margin-bottom: 6px; }
.fish-name  { font-family: 'Playfair Display', serif; font-size: 1rem; color: #fff; margin-bottom: 4px; }
.fish-meta  { font-size: 0.65rem; color: var(--muted); letter-spacing: 1px; text-transform: uppercase; line-height: 1.7; }
.fish-meta span { display: inline-block; background: rgba(0,200,255,0.08); border: 1px solid rgba(0,200,255,0.15); border-radius: 4px; padding: 1px 6px; margin: 2px 2px 0 0; }
.empty-state { text-align: center; padding: 40px; color: var(--muted); grid-column: 1/-1; }
.empty-state .big { font-size: 3rem; margin-bottom: 12px; }
.empty-state p { font-size: 0.8rem; letter-spacing: 1px; }

/* ── EQUIPMENT PANEL ── */
.equipment-panel h2 { color: var(--amazon); margin-bottom: 6px; }
.eq-tier-badge {
  display: inline-block;
  background: linear-gradient(135deg, rgba(255,153,0,0.15), rgba(255,153,0,0.05));
  border: 1px solid rgba(255,153,0,0.35);
  border-radius: 20px; padding: 4px 14px;
  font-size: 0.68rem; color: var(--amazon);
  letter-spacing: 1px; text-transform: uppercase;
  margin-bottom: 20px;
}
.eq-columns {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.eq-slot {
  background: linear-gradient(135deg, rgba(40,25,0,0.45), rgba(15,10,0,0.6));
  border: 1px solid rgba(255,153,0,0.18);
  border-radius: 14px; padding: 18px;
  display: flex; flex-direction: column; gap: 8px;
  animation: fadeIn 0.35s ease both;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.eq-slot:hover { transform: translateY(-3px); border-color: rgba(255,153,0,0.45); box-shadow: 0 8px 28px rgba(0,0,0,0.5); }
.eq-slot-header { display: flex; align-items: center; gap: 10px; }
.eq-slot-icon { font-size: 1.4rem; }
.eq-slot-category { font-size: 0.58rem; text-transform: uppercase; letter-spacing: 2px; color: var(--amazon); }
.eq-slot-name { font-family: 'Playfair Display', serif; font-size: 0.97rem; color: #fff; line-height: 1.3; }
.eq-slot-desc { font-size: 0.67rem; color: var(--muted); line-height: 1.55; }
.eq-slot-btn {
  margin-top: auto; display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 15px; align-self: flex-start;
  background: linear-gradient(135deg, #ff9900, #e07800);
  color: #000; font-family: 'Space Mono', monospace;
  font-size: 0.67rem; font-weight: 700; letter-spacing: 1px;
  text-decoration: none; border-radius: 7px; text-transform: uppercase;
  transition: filter 0.2s, transform 0.1s;
}
.eq-slot-btn:hover { filter: brightness(1.15); transform: scale(1.03); }
.eq-slot-btn svg { width: 11px; height: 11px; fill: #000; flex-shrink: 0; }
/* Placeholder state (no link yet) */
.eq-slot.placeholder { border-style: dashed; border-color: rgba(255,153,0,0.25); opacity: 0.7; }
.eq-slot.placeholder .eq-slot-btn { background: rgba(255,153,0,0.15); color: var(--amazon); border: 1px dashed rgba(255,153,0,0.4); pointer-events: none; }
.affiliate-note { font-size: 0.6rem; color: var(--muted); opacity: 0.55; text-align: center; margin-top: 12px; }

@media (max-width: 700px) {
  .main-grid { grid-template-columns: 1fr; }
  .full-width { grid-column: 1; }
}