* {
  box-sizing: border-box;
  font-family: "Poppins", system-ui, sans-serif;
}

body {
  margin: 0;
  background: linear-gradient(145deg, #0f172a, #1e293b);
  color: #fff;
  transition: background 0.5s, color 0.5s;
}

body.light {
  background: linear-gradient(145deg, #f1f5f9, #e2e8f0);
  color: #1e293b;
}

.top {
  text-align: center;
  padding: 25px;
  animation: fadeDown 0.8s ease;
}

.container {
  max-width: 480px;
  margin: auto;
  padding: 20px;
  backdrop-filter: blur(15px);
  background: rgba(255,255,255,0.05);
  border-radius: 20px;
  box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

.upload-area {
  border: 2px dashed #38bdf8;
  border-radius: 16px;
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: 0.3s;
}
.upload-area:hover {
  background: rgba(56,189,248,0.1);
}

canvas {
  width: 100%;
  margin-top: 20px;
  border-radius: 12px;
  background: #000;
}

.controls, .resize, .filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 15px;
}

button {
  flex: 1;
  padding: 10px;
  border-radius: 14px;
  border: none;
  background: linear-gradient(135deg,#38bdf8,#6366f1);
  color: white;
  cursor: pointer;
  transition: transform 0.2s;
}
button:hover { transform: scale(1.05); }

.filters label, .quality {
  display: block;
  width: 100%;
  margin-top: 10px;
}

input[type="range"] {
  width: 100%;
  accent-color: #38bdf8;
}

#download {
  width: 100%;
  margin-top: 20px;
  background: linear-gradient(135deg,#22c55e,#16a34a);
}

.history {
  margin-top: 20px;
  font-size: 0.85rem;
  background: rgba(255,255,255,0.1);
  padding: 10px;
  border-radius: 10px;
}

.footer {
  text-align: center;
  padding: 15px;
  font-size: 0.85rem;
  background: rgba(0,0,0,0.3);
  margin-top: 30px;
}

#themeToggle {
  margin-top: 10px;
  background: linear-gradient(135deg,#facc15,#f97316);
}

@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-15px); }
  to { opacity: 1; transform: translateY(0); }
}