@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@500;700&display=swap');

:root {
  --bg: linear-gradient(135deg, #0f172a, #111827 55%, #0b1224);
  --card: rgba(255, 255, 255, 0.04);
  --text: #e5e7eb;
  --muted: #9ca3af;
  --accent: #06b6d4;
  --accent-2: #8b5cf6;
  --shadow: 0 25px 70px rgba(0, 0, 0, 0.35);
}

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: 'Manrope', system-ui, -apple-system, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 120px 18px;
}

h1 {
  margin: 0 0 32px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-align: center;
  background: linear-gradient(120deg, rgba(6, 182, 212, 0.35), rgba(139, 92, 246, 0.35));
  color: var(--text);
  display: inline-block;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
}

.canvas-container {
  display: flex;
  gap: 20px;
  margin-bottom: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

canvas {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  box-shadow: var(--shadow);
}

.controls {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

input[type="file"] {
  padding: 12px 18px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font-family: 'Manrope', sans-serif;
  font-weight: 500;
  cursor: pointer;
  transition: all 180ms ease;
}

input[type="file"]:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
}

input[type="file"]::file-selector-button {
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: linear-gradient(120deg, rgba(6, 182, 212, 0.18), rgba(139, 92, 246, 0.18));
  color: var(--text);
  font-weight: 700;
  margin-right: 12px;
  cursor: pointer;
  transition: all 120ms ease;
}

input[type="file"]::file-selector-button:hover {
  background: linear-gradient(120deg, rgba(6, 182, 212, 0.28), rgba(139, 92, 246, 0.28));
  border-color: rgba(255, 255, 255, 0.2);
}

input[type="button"] {
  padding: 16px 20px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: linear-gradient(120deg, rgba(6, 182, 212, 0.18), rgba(139, 92, 246, 0.18));
  color: var(--text);
  font-weight: 700;
  font-family: 'Manrope', sans-serif;
  cursor: pointer;
  transition: all 120ms ease;
  letter-spacing: 0.01em;
}

input[type="button"]:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.2);
  background: linear-gradient(120deg, rgba(6, 182, 212, 0.28), rgba(139, 92, 246, 0.28));
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

input[type="button"]:active {
  transform: translateY(0);
}

.home-btn {
  position: fixed;
  top: 16px;
  left: 16px;
  padding: 10px 18px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: linear-gradient(120deg, rgba(6, 182, 212, 0.18), rgba(139, 92, 246, 0.18));
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-family: 'Manrope', system-ui, -apple-system, sans-serif;
  transition: all 120ms ease;
  z-index: 1000;
}

.home-btn:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.2);
  background: linear-gradient(120deg, rgba(6, 182, 212, 0.28), rgba(139, 92, 246, 0.28));
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

@media (max-width: 640px) {
  .canvas-container {
    flex-direction: column;
  }
  
  canvas {
    max-width: 100%;
    height: auto;
  }
}