:root {
  --bg-deep: #0a0a1a;
  --bg-card: #111127;
  --bg-card-hover: #181840;
  --border-glow: rgba(0, 212, 255, 0.15);
  --accent-cyan: #00d4ff;
  --accent-green: #00ff88;
  --accent-orange: #ff6b35;
  --accent-pink: #ff3cac;
  --text-primary: #e8e8f0;
  --text-muted: #8888aa;
  --glass-bg: rgba(17, 17, 39, 0.75);
  --glass-border: rgba(255,255,255,0.06);
}

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

body {
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: 'IBM Plex Sans', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

.font-mono { font-family: 'JetBrains Mono', monospace; }
.font-display { font-family: 'IBM Plex Sans', sans-serif; }

@keyframes bgShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.header-bg {
  background: linear-gradient(135deg, #0d0d2b 0%, #1a0a2e 25%, #0a1628 50%, #0d0d2b 100%);
  background-size: 400% 400%;
  animation: bgShift 12s ease infinite;
}

@keyframes pulse-idle { 0%,100% { box-shadow: 0 0 4px #4466aa; opacity:0.6; } 50% { box-shadow: 0 0 12px #4466aa; opacity:1; } }
@keyframes pulse-train { 0%,100% { box-shadow: 0 0 4px #ff6b35; opacity:0.7; } 50% { box-shadow: 0 0 18px #ff6b35; opacity:1; } }
@keyframes pulse-gen { 0%,100% { box-shadow: 0 0 4px #00ff88; opacity:0.7; } 50% { box-shadow: 0 0 18px #00ff88; opacity:1; } }

.status-idle { background: #4466aa; animation: pulse-idle 2.5s ease infinite; }
.status-training { background: #ff6b35; animation: pulse-train 1s ease infinite; }
.status-generating { background: #00ff88; animation: pulse-gen 1.2s ease infinite; }
.status-extracting { background: #ff3cac; animation: pulse-train 0.8s ease infinite; }

.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  border-radius: 12px;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.glass-card:hover {
  border-color: rgba(0, 212, 255, 0.12);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.04);
}

.drop-zone {
  border: 2px dashed rgba(0, 212, 255, 0.3);
  border-radius: 12px;
  transition: all 0.3s;
  cursor: pointer;
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.05);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.08);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), #0088cc);
  color: #fff;
  font-weight: 700;
  padding: 10px 24px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: 'IBM Plex Sans', sans-serif;
}
.btn-primary:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(0,212,255,0.3); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-danger {
  background: linear-gradient(135deg, #ff4444, #cc2222);
  color: #fff;
  font-weight: 600;
  padding: 8px 20px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-green {
  background: linear-gradient(135deg, var(--accent-green), #00aa55);
  color: #000;
  font-weight: 700;
  padding: 12px 28px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 1rem;
}
.btn-green:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(0,255,136,0.3); }
.btn-green:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-orange {
  background: linear-gradient(135deg, var(--accent-orange), #dd5522);
  color: #fff;
  font-weight: 700;
  padding: 10px 24px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.progress-bar-bg {
  background: rgba(255,255,255,0.08);
  border-radius: 6px;
  overflow: hidden;
  height: 8px;
}
.progress-bar-fill {
  height: 100%;
  border-radius: 6px;
  transition: width 0.3s ease;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-green));
}

.loss-chart-container canvas {
  image-rendering: auto;
}

input[type="range"] {
  -webkit-appearance: none;
  background: rgba(255,255,255,0.1);
  height: 6px;
  border-radius: 3px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--accent-cyan);
  cursor: pointer;
}

select, input[type="number"] {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-primary);
  padding: 6px 10px;
  border-radius: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
}
select:focus, input[type="number"]:focus {
  outline: none;
  border-color: var(--accent-cyan);
}

.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
@keyframes slideOut {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(100%); opacity: 0; }
}

.toast {
  animation: slideIn 0.3s ease forwards;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  max-width: 360px;
  backdrop-filter: blur(12px);
}
.toast-error { background: rgba(255,50,50,0.9); color: #fff; }
.toast-success { background: rgba(0,200,100,0.9); color: #fff; }
.toast-info { background: rgba(0,150,255,0.9); color: #fff; }

.tab-btn {
  padding: 8px 20px;
  border: 1px solid rgba(255,255,255,0.1);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
}
.tab-btn:first-child { border-radius: 8px 0 0 8px; }
.tab-btn:last-child { border-radius: 0 8px 8px 0; }
.tab-btn.active {
  background: rgba(0, 212, 255, 0.15);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

@keyframes confetti-fall {
  0% { transform: translateY(-10vh) rotate(0deg); opacity: 1; }
  100% { transform: translateY(110vh) rotate(720deg); opacity: 0; }
}

.confetti-piece {
  position: fixed;
  width: 8px;
  height: 8px;
  top: -10px;
  z-index: 10000;
  animation: confetti-fall 3s ease forwards;
}

.tooltip-wrapper { position: relative; display: inline-block; }
.tooltip-wrapper .tooltip-text {
  visibility: hidden;
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background: #222244;
  color: #ccc;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  white-space: nowrap;
  z-index: 100;
  border: 1px solid rgba(255,255,255,0.1);
}
.tooltip-wrapper:hover .tooltip-text { visibility: visible; }

.frame-thumb {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border-radius: 4px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s;
  image-rendering: pixelated;
}
.frame-thumb:hover { border-color: var(--accent-cyan); transform: scale(1.1); }

.filmstrip {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 8px 0;
}
.filmstrip::-webkit-scrollbar { height: 6px; }
.filmstrip::-webkit-scrollbar-track { background: rgba(255,255,255,0.05); border-radius: 3px; }
.filmstrip::-webkit-scrollbar-thumb { background: var(--accent-cyan); border-radius: 3px; }

.nn-diagram-layer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.nn-node {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-cyan);
  opacity: 0.6;
  transition: all 0.3s;
}
.nn-node.active {
  opacity: 1;
  box-shadow: 0 0 8px var(--accent-cyan);
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: rgba(255,255,255,0.02); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }

@media (max-width: 768px) {
  .responsive-grid { grid-template-columns: 1fr !important; }
}