:root {
  --bg: #0b1120;
  --panel: rgba(15, 23, 42, 0.72);
  --panel-2: rgba(30, 41, 59, 0.72);
  --stroke: rgba(255, 255, 255, 0.10);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #6366f1;
  --accent-2: #22d3ee;
  --success: #22c55e;
  --danger: #ef4444;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #172554, var(--bg) 35%);
  min-height: 100vh;
  overflow-x: hidden;
}

.bg-orb {
  position: fixed;
  border-radius: 999px;
  filter: blur(70px);
  opacity: 0.35;
  pointer-events: none;
}

.orb-1 {
  width: 280px;
  height: 280px;
  background: #4f46e5;
  top: -80px;
  right: -60px;
}

.orb-2 {
  width: 240px;
  height: 240px;
  background: #06b6d4;
  bottom: -80px;
  left: -60px;
}

.app {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding: 28px 18px 40px;
  position: relative;
}

.hero, .panel, .preview-card, .footer-card {
  border: 1px solid var(--stroke);
  background: var(--panel);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
  border-radius: 24px;
}

.hero {
  padding: 22px;
  margin-bottom: 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-icon {
  width: 52px;
  height: 52px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font-size: 24px;
}

.brand h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 40px);
}

.brand p {
  margin: 6px 0 0;
  color: var(--muted);
}

.layout {
  display: grid;
  gap: 20px;
  grid-template-columns: 420px 1fr;
}

.panel {
  padding: 18px;
}

.drop-zone {
  border: 1.5px dashed rgba(255,255,255,0.15);
  border-radius: 22px;
  padding: 18px;
  background: rgba(255,255,255,0.03);
  transition: 0.25s ease;
}

.drop-zone.active {
  border-color: var(--accent-2);
  background: rgba(34, 211, 238, 0.08);
  transform: translateY(-2px);
}

.drop-content {
  min-height: 240px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 12px;
}

.upload-icon {
  width: 64px;
  height: 64px;
  border-radius: 20px;
  display: grid;
  place-items: center;
  font-size: 28px;
  background: rgba(255,255,255,0.08);
}

.drop-content h2 {
  margin: 0;
  font-size: 20px;
}

.drop-content p, .meta span, .footer-card p, .status {
  color: var(--muted);
}

.actions, .footer-actions, .toggle, .size-row {
  display: flex;
  gap: 10px;
}

.actions { flex-wrap: wrap; justify-content: center; }

.card, .preview-card, .footer-card {
  background: var(--panel-2);
  border-radius: 22px;
  padding: 16px;
  border: 1px solid var(--stroke);
  margin-top: 16px;
}

.card-head, .preview-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.card h3, .preview-card h3, .footer-card h3 {
  margin: 0;
  font-size: 18px;
}

.toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: rgba(15, 23, 42, 0.85);
  padding: 4px;
  border-radius: 18px;
}

.toggle-btn, .btn {
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: 0.22s ease;
}

.toggle-btn {
  padding: 12px 14px;
  border-radius: 14px;
  color: var(--muted);
  background: transparent;
  font-weight: 600;
}

.toggle-btn.active {
  background: rgba(255,255,255,0.95);
  color: #111827;
}

.control-group {
  margin-top: 16px;
}

.control-group label {
  display: block;
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--text);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

input[type="number"], select {
  width: 100%;
  padding: 13px 14px;
  border-radius: 16px;
  border: 1px solid var(--stroke);
  background: rgba(15, 23, 42, 0.85);
  color: var(--text);
  outline: none;
}

.size-row input { flex: 1; }

.hidden { display: none !important; }

.status {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
}

.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr 1fr;
}

.preview-card {
  overflow: hidden;
}

.preview-box {
  position: relative;
  height: 330px;
  border-radius: 18px;
  overflow: hidden;
  background: rgba(2, 6, 23, 0.65);
  border: 1px dashed rgba(255,255,255,0.08);
}

.preview-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: none;
}

.placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--muted);
  padding: 24px;
}

.meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}

.meta div {
  background: rgba(2, 6, 23, 0.45);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 16px;
  padding: 12px;
}

.meta strong {
  display: block;
  margin-top: 5px;
  word-break: break-word;
}

.badge {
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(255,255,255,0.08);
  color: #e5e7eb;
}

.badge.success {
  background: rgba(34,197,94,0.16);
  color: #bbf7d0;
}

.badge.warn {
  background: rgba(245,158,11,0.16);
  color: #fde68a;
}

.footer-card {
  margin-top: 20px;
  display: grid;
  gap: 14px;
}

.btn {
  border-radius: 16px;
  padding: 13px 18px;
  font-weight: 700;
}

.btn.primary {
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.btn.secondary {
  color: white;
  background: rgba(255,255,255,0.08);
}

.btn.ghost {
  color: var(--text);
  background: rgba(255,255,255,0.06);
}

.btn:hover, .toggle-btn:hover {
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.loader {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
}

.loader span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-2);
  animation: bounce 1s infinite ease-in-out;
}

.loader span:nth-child(2) { animation-delay: 0.15s; }
.loader span:nth-child(3) { animation-delay: 0.3s; }

@keyframes bounce {
  0%, 80%, 100% { transform: translateY(0); opacity: .35; }
  40% { transform: translateY(-8px); opacity: 1; }
}

@media (max-width: 980px) {
  .layout, .grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .app { padding: 14px; }
  .hero, .panel, .preview-card, .footer-card { border-radius: 20px; }
  .preview-box { height: 260px; }
  .footer-actions, .actions { flex-direction: column; }
  .btn { width: 100%; }
}