:root {
  --primary: #4361ee;
  --danger: #e74c3c;
  --warning: #f39c12;
  --success: #2ecc71;
  --background: #121212;
  --surface: #1e1e1e;
  --surface-light: #2a2a2a;
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --border-radius: 8px;
  --transition: transform 0.15s ease;
  --shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  --header-height: 140px;
  --search-height: 60px;
  --action-bar-height: 68px;
}

body {
  background-color: var(--background);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.4;
  overscroll-behavior: contain;
}

#app-container {
  padding: calc(var(--header-height) + var(--search-height) + 16px) 8px calc(var(--action-bar-height) + 16px) 8px;
  width: 100%;
  box-sizing: border-box;
  max-width: 1200px;
  margin: 0 auto;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  padding: 12px 8px;
  box-shadow: var(--shadow);
  z-index: 10;
  height: var(--header-height);
  box-sizing: border-box;
}

.app-title {
  margin: 0 0 12px;
  font-weight: 700;
  font-size: 22px;
  text-align: center;
}

.dashboard {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 0 auto 16px;
  max-width: 1200px;
}

.stat-card {
  background: var(--surface-light);
  border-radius: var(--border-radius);
  padding: 12px 8px;
  text-align: center;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.stat-value {
  font-size: 18px;
  font-weight: 700;
}

#searchContainer {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--surface);
  padding: 10px 8px;
  z-index: 9;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  height: var(--search-height);
  box-sizing: border-box;
}

#searchInput {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: block;
  padding: 12px 16px;
  border-radius: var(--border-radius);
  background: var(--surface-light);
  color: var(--text);
  border: 1px solid #444;
  font-size: 16px;
  box-sizing: border-box;
}

#counterContainer {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
}

.counter {
  background: var(--surface);
  border-radius: var(--border-radius);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow);
  border: 1px solid var(--surface-light);
}

.counter-name {
  background: var(--surface-light);
  color: var(--text);
  font-size: 16px;
  text-align: center;
  padding: 10px;
  border-radius: var(--border-radius);
  border: 1px solid #444;
  width: 100%;
  box-sizing: border-box;
}

.counter-name:focus {
  outline: none;
  border-color: var(--primary);
}

.counter-controls {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.counter-value {
  width: 64px;
  text-align: center;
  font-size: 20px;
  font-weight: 700;
  background: var(--surface-light);
  color: var(--text);
  border: 1px solid #444;
  border-radius: var(--border-radius);
  padding: 10px;
}

button {
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 16px;
  padding: 10px;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: manipulation;
  transition: background-color 0.2s, transform 0.1s;
}

button:active {
  transform: scale(0.98);
}

.counter-btn {
  background: var(--primary);
  color: white;
  font-weight: 700;
  font-size: 20px;
}

.counter-btn.decrement {
  background: var(--surface-light);
}

.reset-btn {
  background: var(--warning);
  color: white;
}

.delete-btn {
  background: var(--danger);
  color: white;
}

.action-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  padding: 12px 8px;
  display: flex;
  justify-content: space-between;
  box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.2);
  z-index: 10;
  height: var(--action-bar-height);
  box-sizing: border-box;
}

#resetButton {
  background: var(--danger);
  color: white;
  font-weight: 700;
}

#addCounter {
  background: var(--success);
  color: white;
  font-weight: 700;
}

.no-results {
  text-align: center;
  padding: 20px;
  color: var(--text-muted);
  background: var(--surface);
  border-radius: var(--border-radius);
  margin: 16px 0;
}

.tooltip {
  position: relative;
}

.tooltip::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  padding: 5px 10px;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  margin-bottom: 8px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
  pointer-events: none;
  z-index: 20;
}

.tooltip:hover::before {
  opacity: 1;
  visibility: visible;
}

@media (min-width: 768px) {
  #app-container {
    padding: calc(var(--header-height) + var(--search-height) + 16px) 16px calc(var(--action-bar-height) + 16px) 16px;
  }
  
  .header, .action-bar, #searchContainer {
    padding: 12px 16px;
  }
  
  #counterContainer {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
  }
  
  .dashboard {
    gap: 16px;
  }
}

@media (max-width: 767px) {
  .tooltip::before {
    display: none;
  }
}