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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #0d0d1a;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #eee;
}

#app {
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: #16213e;
}

/* ===== HEADER ===== */
header {
  background: rgba(15, 52, 96, 0.95);
  padding: 8px 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  border-bottom: 2px solid #533483;
  flex-shrink: 0;
  z-index: 10;
}

header h1 {
  font-size: 1.2rem;
  background: linear-gradient(45deg, #e94560, #f5a623);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-right: 8px;
  white-space: nowrap;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.toolbar button {
  background: rgba(26, 26, 64, 0.8);
  border: 1px solid #533483;
  color: #eee;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  transition: 0.2s;
  min-height: 32px;
  min-width: 36px;
}

.toolbar button:hover {
  background: #533483;
  border-color: #e94560;
}

.toolbar button.active {
  background: #e94560;
  border-color: #fff;
}

#brushColor {
  width: 36px;
  height: 30px;
  border: 2px solid #533483;
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  padding: 2px;
}

#sizeDisplay {
  min-width: 24px;
  text-align: center;
  font-weight: bold;
  color: #f5a623;
  font-size: 0.9rem;
}

/* ===== MAIN ===== */
main {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: #0d0d1a;
}

#drawCanvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: none;
  background: #1a1a2e;
}

/* ===== GESTURE GUIDE ===== */
#gestureGuide {
  position: absolute;
  bottom: 20px;
  left: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(0, 0, 0, 0.7);
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid rgba(83, 52, 131, 0.5);
  backdrop-filter: blur(4px);
  z-index: 5;
  pointer-events: none;
  font-size: 0.75rem;
}

.gesture-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.gesture-icon {
  font-size: 1.2rem;
  width: 28px;
  text-align: center;
}

.gesture-label {
  color: #ccc;
  font-weight: 300;
}

/* ===== STATUS INDICATOR (minimal) ===== */
#statusIndicator {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.7rem;
  background: rgba(0, 0, 0, 0.6);
  color: #7fdb9a;
  border: 1px solid rgba(127, 219, 154, 0.3);
  z-index: 5;
  pointer-events: none;
  transition: 0.3s;
}

#statusIndicator.ready {
  color: #7fdb9a;
  border-color: rgba(127, 219, 154, 0.4);
}

#statusIndicator.loading {
  color: #f5a623;
  border-color: rgba(245, 166, 35, 0.4);
}

#statusIndicator.error {
  color: #ff6b6b;
  border-color: rgba(255, 107, 107, 0.4);
}

/* ===== FOOTER ===== */
footer {
  background: rgba(15, 52, 96, 0.95);
  padding: 4px 16px;
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: #888;
  border-top: 1px solid #533483;
  flex-shrink: 0;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 700px) {
  header { flex-direction: column; align-items: stretch; gap: 4px; }
  .toolbar { justify-content: center; }
  #gestureGuide { 
    bottom: 10px; 
    left: 10px; 
    padding: 6px 10px;
    font-size: 0.65rem;
  }
  .gesture-icon { font-size: 1rem; width: 22px; }
  #statusIndicator { top: 8px; right: 8px; font-size: 0.6rem; padding: 2px 8px; }
}

@media (max-width: 480px) {
  #gestureGuide { display: none; } /* Hide on very small screens */
}