:root {
  --bg-color: #fafafa;
  --text-color: #333;
  --accent-color: #6c63ff;
  --secondary-color: #03dac6;
  --error-color: #b00020;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --done-color: #aaaaaa;
  --not-started-color: #fff;
  --in-progress-color: #ffb74d;
  --completed-color: #66bb6a;
  --due-today-color: #f44336;
  --due-tomorrow-color: #ff9800;
  --due-week-color: #ffc107;
  --due-later-color: #4caf50;
  --important-color: #ff5252;

  --in-progress-color: #000;
  --completed-color: #000;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--bg-color);
  color: var(--text-color);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px 0px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: calc(100% - 40px);
}

.hidden {
  display: none !important;
}

.back-btn {
  position: absolute;
  top: 20px;
  left: 20px;
  background-color: rgba(255, 255, 255, 0.8);
  color: var(--accent-color);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  font-size: 1.1em;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.1);
  transition: background-color 0.2s, box-shadow 0.2s, transform 0.2s ease-out;
}

.back-btn:hover {
  background-color: white;
  box-shadow: 0 0 12px 2px rgba(0, 0, 0, 0.3);
  transform: translate(0, -3px);
}

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s;
}

.btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.5;
  cursor: auto;
}

.btn-primary {
  background-color: var(--accent-color);
  color: white;
}

.btn-secondary {
  background-color: #eee;
  color: var(--text-color);
}

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

.btn-icon {
  padding: 10px 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s;
}

.btn-icon:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn-icon.btn-danger {
  border: 1px solid var(--error-color);
  color: var(--text-color);
}

.btn-icon.btn-danger:hover {
  background-color: rgba(240, 14, 55, 0.3);
  color: var(--error-color);
}

.btn-icon:disabled {
  opacity: 0.5;
  cursor: auto;
}

.tag {
  color: var(--accent-color);
  font-weight: 500;
}

/* Loading Screen */
#loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-color);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s ease-in;
}

.logo-container {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  position: relative;
}

.loading-logo {
  width: 100%;
  height: 100%;
  animation: logo-pulse 2s ease-in-out infinite alternate,
    logo-spin 8s linear infinite;
}

.loading-text {
  font-size: 18px;
  color: var(--accent-color);
  margin-bottom: 20px;
  font-weight: 300;
}

.loading-spinner {
  display: flex;
  justify-content: center;
  gap: 8px;
}

.spinner-dot {
  width: 10px;
  height: 10px;
  background-color: var(--accent-color);
  border-radius: 50%;
  opacity: 0.3;
}

.spinner-dot:nth-child(1) {
  animation: dot-pulse 1.4s ease-in-out 0s infinite;
}

.spinner-dot:nth-child(2) {
  animation: dot-pulse 1.4s ease-in-out 0.2s infinite;
}

.spinner-dot:nth-child(3) {
  animation: dot-pulse 1.4s ease-in-out 0.4s infinite;
}

@keyframes logo-pulse {
  0% {
    transform: scale(0.9);
  }
  100% {
    transform: scale(1.1);
  }
}

@keyframes logo-spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes dot-pulse {
  0%,
  100% {
    opacity: 0.3;
  }
  50% {
    opacity: 1;
  }
}

/* Status Message */
.status-message {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 8px 16px;
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.3s;
}

.status-message.show {
  opacity: 1;
}

/* Progress Indicator */
.progress-indicator {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid #000;
  position: relative;
  cursor: pointer;
  display: inline-block;
  margin-right: 8px;
  vertical-align: middle;
  box-shadow: rgba(0, 0, 0, 0.6) 2.5px 2.5px 1px 0px;
  background-color: #fff;
  display: none;
}

.progress-indicator::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  border-radius: 50%;
  border: 1px solid #000;
  display: none;
}

.progress-indicator.not-started {
  display: block;
}

.progress-indicator.in-progress {
  display: block;
}

.progress-indicator.in-progress::before {
  background-color: var(--in-progress-color);
  display: inline-block;
}

.progress-indicator.done {
  background-color: var(--completed-color);
  display: block;
}