/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-color: #ffffff;
  --text-color: #111827;
  --text-muted: #9ca3af;
  --icon-color: #4b5563;
  --border-color: #d1d5db;
  --focus-color: #3b82f6;
}

.dark {
  --bg-color: #030712;
  --text-color: #f3f4f6;
  --text-muted: #4b5563;
  --icon-color: #9ca3af;
  --border-color: #374151;
  --focus-color: #3b82f6;
}

html,
body {
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
}

/* Container */
.container {
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  user-select: none;
  overflow: hidden;
}

/* Controls */
.controls {
  padding: 1.5rem;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 1rem;
}

.icon-btn {
  padding: 0.5rem;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-btn:hover {
  opacity: 0.6;
}

.icon {
  width: 20px;
  height: 20px;
  color: var(--icon-color);
}

/* Dark mode icon toggle */
.sun-icon {
  display: none;
}

.dark .sun-icon {
  display: block;
}

.dark .moon-icon {
  display: none;
}

/* Loop button active state */
.repeat-icon.active {
  color: #3b82f6;
}

/* Loop input */
.loop-input {
  width: 5rem;
  padding: 0.25rem 0.5rem;
  text-align: center;
  border: none;
  border-bottom: 2px solid var(--border-color);
  background: transparent;
  color: var(--text-color);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.loop-input:focus {
  border-color: var(--focus-color);
}

.loop-input.hidden {
  display: none;
}

/* Counter Area */
.counter-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.counter-number {
  font-size: 140px;
  font-weight: 400;
  line-height: 1;
  color: var(--text-color);
}

@media (min-width: 640px) {
  .counter-number {
    font-size: 200px;
  }
}

@media (min-width: 768px) {
  .counter-number {
    font-size: 280px;
  }
}

/* Footer */
.footer {
  padding: 1.5rem;
  text-align: center;
}

.hint-text {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Remove number input spinners */
.loop-input::-webkit-outer-spin-button,
.loop-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.loop-input[type="number"] {
  -moz-appearance: textfield;
}

/* Sound icon toggle */
.sound-on-icon {
  display: none;
}

.sound-enabled .sound-on-icon {
  display: block;
  color: #3b82f6;
}

.sound-enabled .sound-off-icon {
  display: none;
}

/* Counter pulse animation */
@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

.counter-number.pulse {
  animation: pulse 0.15s ease-out;
}