html,
body {
  height: 100dvh;
}

.textarea-app {
  margin: 0;
  padding: 0;
  min-height: 100dvh;
  overflow: hidden;
  position: relative;
  background-color: #f7f7f7;
}

.control-bar {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px;
  max-height: calc(100% - 32px);
  box-sizing: border-box;
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  border-radius: 12px;
}

.control-bar__button {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 8px;
  border: none;
  border-radius: 4px;
  background-color: #fff;
  cursor: pointer;
  transition: background-color 0.15s ease-out;
}

.control-bar__button:hover,
.control-bar__button:focus-visible {
  background-color: #e0e0e0;
}

.control-bar__button:hover span,
.control-bar__button:focus-visible span {
  text-decoration: underline;
}

.control-bar__button:hover svg,
.control-bar__button:focus-visible svg {
  stroke-width: 2.5;
}

.control-bar__button:active {
  background-color: #d0d0d0;
}

.control-bar__button:disabled {
  cursor: not-allowed;
}

.control-bar__button:disabled:hover,
.control-bar__button:disabled:focus-visible {
  background-color: transparent;
}

.control-bar__button:disabled:hover span,
.control-bar__button:disabled:focus-visible span {
  text-decoration: none;
}

.control-bar__button:disabled:hover svg,
.control-bar__button:disabled:focus-visible svg {
  stroke-width: 2;
}

.control-bar__button:disabled svg {
  stroke: #aaa;
}

.control-bar__button:disabled span {
  color: #aaa;
}

.control-bar__button span {
  font-size: 0.75rem;
  line-height: 1;
}

.control-bar__button svg {
  stroke: #333;
  transition: stroke-width 0.15s ease-out;
}

.textarea-app__container {
  width: 100%;
  height: 100vh;
}

.textarea-app__input {
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  padding: 24px 24px 24px 120px;
  border: none;
  resize: none;
  font-size: 1rem;
  font-family: sans-serif;
}

.textarea-app__input:focus {
  outline: 3px solid #005fcc;
  outline-offset: 0;
}

.textarea-app__label--visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  border: 0;
}

.qr-code-container {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 32px;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  z-index: 100;
  cursor: move;
  user-select: none;
}

.qr-code-container__close-button {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 24px;
  height: 24px;
  border: none;
  background: none;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.5;
}

.qr-code-container__close-button:hover {
  opacity: 1;
}

.copy-banner {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translate(-50%, calc(100% + 32px));
  transition: transform 0.3s ease-out, opacity 0.3s ease-out;
  opacity: 0;
  pointer-events: none;
  z-index: 3;
}

.copy-banner--visible {
  transform: translate(-50%, 0);
  opacity: 1;
  pointer-events: auto;
}

.copy-banner__button {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border: none;
  border-radius: 999px;
  background-color: #222;
  color: #fff;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  transition: background-color 0.2s ease-out, transform 0.2s ease-out;
}

.copy-banner__button:hover,
.copy-banner__button:focus-visible {
  background-color: #005fcc;
  transform: translateY(-2px) scale(1.03);
}

.copy-banner__icon {
  stroke: currentColor;
}

.copy-banner__label {
  font-size: 0.875rem;
  font-weight: 600;
}

@media (max-width: 640px) {
  .control-bar {
    flex-direction: row;
  }

  .textarea-app__input {
    padding: 100px 24px 24px 24px;
  }

  .copy-banner {
    width: calc(100% - 32px);
  }

  .copy-banner__button {
    width: 100%;
    justify-content: center;
  }
}