:root {
  --bg-color: #fdf6f0;
  --text-color: #4b3832;
  --card-bg: #fffaf5;
  --btn-bg: #d7a98c;
  --remove-bg: #e57373;
  --border-color: #e2d6cd;
}

body.dark {
  --bg-color: #2b2b2b;
  --text-color: #f0eae2;
  --card-bg: #3a3a3a;
  --btn-bg: #a07658;
  --remove-bg: #ef5350;
  --border-color: #555;
}

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

body {
  background-color: var(--bg-color);
  font-family: 'Segoe UI', sans-serif;
  display: flex;
  justify-content: center;
  align-items: start;
  height: 100vh;
  padding-top: 50px;
  color: var(--text-color);
  transition: background 0.4s, color 0.4s;
}

.container {
  background: var(--card-bg);
  padding: 25px 30px;
  border-radius: 10px;
  width: 540px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  animation: fadeIn 0.6s ease-in-out;
  border: 1px solid var(--border-color);
}

h1 {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

#themeToggle {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--text-color);
}

.input-section {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}

#taskInput {
  flex: 1;
  padding: 10px;
  font-size: 16px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-color);
}

#addTaskBtn {
  padding: 10px 16px;
  background-color: var(--btn-bg);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

#addTaskBtn:hover,
#suggestionBtn:hover {
  animation: bounceHover 0.3s ease-in-out;
}

.suggestion-section {
  position: relative;
  text-align: center;
  margin-bottom: 15px;
}

#suggestionBtn {
  background-color: var(--btn-bg);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  margin-bottom: 6px;
}

#suggestionDropdown {
  list-style: none;
  padding: 0;
  margin: 0;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  max-height: 180px;
  overflow-y: auto;
  width: 100%;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  position: absolute;
  left: 0;
  right: 0;
  z-index: 100;
}

#suggestionDropdown li {
  padding: 10px;
  cursor: pointer;
  color: var(--text-color);
  border-bottom: 1px solid var(--border-color);
  transition: background 0.2s;
}

#suggestionDropdown li:hover {
  background-color: #f0e6dc;
}

.hidden {
  display: none;
}

.filters {
  display: flex;
  justify-content: center;
  margin-bottom: 15px;
}

.filter-btn {
  margin: 0 5px;
  padding: 6px 14px;
  border: 1px solid var(--border-color);
  background-color: #eee;
  border-radius: 20px;
  cursor: pointer;
  transition: 0.2s;
}

.filter-btn.active {
  background-color: var(--btn-bg);
  color: white;
}

#taskList {
  list-style: none;
  padding-left: 0;
}

.task-item {
  display: flex;
  justify-content: space-between;
  background: var(--card-bg);
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  margin-bottom: 10px;
  border-radius: 6px;
  transition: all 0.3s ease;
  animation: slideIn 0.25s ease-in-out;
  user-select: none;
}

.task-item.completed {
  text-decoration: line-through;
  color: gray;
  opacity: 0.7;
  animation: pulse 0.4s ease;
}

.task-text {
  flex: 1;
  cursor: pointer;
}

.remove-btn {
  background: var(--remove-bg);
  border: none;
  color: white;
  padding: 5px 10px;
  border-radius: 4px;
  cursor: pointer;
}

.remove-btn:hover {
  background: #cc5c5c;
}

.footer {
  margin-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.footer p {
  margin: 0;
  font-size: 14px;
  font-weight: 500;
}

#clearAllBtn {
  background-color: #888;
  color: white;
  border: none;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
}

#clearAllBtn:hover {
  background-color: #555;
}

.task-item.dragging {
  opacity: 0.5;
}

.fade-out {
  animation: fadeOut 0.3s ease-in-out forwards;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideIn {
  from {
    transform: translateY(15px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes fadeOut {
  from { opacity: 1; height: 50px; }
  to { opacity: 0; height: 0; margin: 0; padding: 0; }
}

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

@keyframes bounceHover {
  0% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
  100% { transform: translateY(0); }
}