/* --- Global Styles & Dark Theme --- */
:root {
  --bg-color: #1a1a1a;
  --surface-color: #2c2c2c;
  --primary-color: rgb(105, 112, 120); /* A blue accent */
  --text-color: #e0e0e0;
  --text-muted-color: #a0a0a0;
  --border-color: #444;
  --priority-color: #f5a623; /* Orange for priority */
  --completed-color: #7ed321; /* Green for completed */
  --danger-color: #d0021b; /* Red for delete */
  --modal-overlay-color: rgba(0, 0, 0, 0.7);
  --font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
  margin: 0;
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-color);
  display: flex; /* Use flex for centering modal */
  justify-content: center; /* Center modal horizontally */
  align-items: center; /* Center modal vertically */
  min-height: 100vh;
  overflow-x: hidden; /* Prevent horizontal scrollbar */
  position: relative; /* Needed for absolute positioning of toggle */
}

/* --- Screen Management --- */
.screen {
  display: none; /* Hide screens by default */
  width: 100%;
  height: 100vh; /* Full viewport height */
}

.screen.active {
  display: block; /* Show the active screen */
}

/* --- Login Screen --- */
#login-screen {
  display: flex;
  justify-content: center;
  align-items: center;
}

.login-container {
  background-color: var(--surface-color);
  padding: 40px;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
  text-align: center;
  max-width: 300px;
  width: 90%;
}

.login-container h2 {
  margin-bottom: 20px;
  color: var(--text-color);
}

.login-container input[type="password"] {
  width: calc(100% - 20px); /* Adjust width accounting for padding */
  padding: 10px;
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-size: 1rem;
}

.login-container button {
  padding: 10px 20px;
  border: none;
  border-radius: 4px;
  background-color: var(--primary-color);
  color: white;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.login-container button:hover {
  background-color: #3a80d2; /* Darker shade of primary color */
}

.error-message {
  color: var(--danger-color);
  font-size: 0.9rem;
  margin-top: 10px;
  min-height: 1.2em; /* Reserve space */
}

/* --- App Screen Layout --- */
#app-screen {
  display: none; /* Initially hidden */
  position: relative; /* Context for absolute positioning */
  overflow: hidden; /* Prevent layout shifts from scrollbars initially */
  width: 100%;
  height: 100%;
}

/* --- Sidebar Toggle Button --- */
.sidebar-toggle-btn {
  position: fixed; /* Fixed position */
  top: 15px;
  left: 15px;
  z-index: 1001; /* Above sidebar */
  background-color: var(--surface-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  border-radius: 5px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 1.2rem;
  transition: background-color 0.3s ease;
}

.sidebar-toggle-btn:hover {
  background-color: #444;
}

/* --- Logout Button --- */
.logout-btn {
  position: fixed;
  top: 15px;
  right: 15px;
  z-index: 1001;
  background-color: var(--surface-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  border-radius: 5px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 1.2rem;
  transition: background-color 0.3s ease;
}

.logout-btn:hover {
  background-color: var(--danger-color);
}

/* --- Sidebar --- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 300px; /* Adjust as needed */
  max-width: 80%; /* Limit width on smaller screens */
  height: 100%;
  background-color: var(--surface-color);
  border-right: 1px solid var(--border-color);
  padding: 60px 15px 20px 15px; /* Top padding for toggle button */
  box-sizing: border-box;
  transform: translateX(-100%);
  transition: transform 0.3s ease-in-out;
  z-index: 1000; /* Below toggle button, above content */
  overflow-y: auto; /* Allow scrolling if list is long */
}

.sidebar.open {
  transform: translateX(0);
}

.sidebar h3 {
  margin-top: 0;
  margin-bottom: 15px;
  text-align: center;
  color: var(--text-muted-color);
}

#task-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

/* Individual Task Item Styling in Sidebar */
.task-item {
  display: flex;
  align-items: center;
  background-color: var(--bg-color);
  padding: 10px;
  margin-bottom: 8px;
  border-radius: 4px;
  border-left: 3px solid transparent; /* For priority indicator */
  transition: background-color 0.2s ease;
  cursor: pointer; /* Indicate clickable */
}

.task-item:hover {
  background-color: #444;
}

.task-item.active {
  background-color: #3a3a3a; /* Highlight current task */
  border-left-color: var(--primary-color);
}

.task-item.priority {
  border-left-color: var(--priority-color);
}

.task-item.completed {
  opacity: 0.7;
}

.task-item .task-complete-toggle {
  margin-right: 10px;
  cursor: pointer;
}

.task-item .task-text {
  flex-grow: 1;
  margin-right: 10px;
  word-break: break-word; /* Handle long text */
}

.task-item.completed .task-text {
  text-decoration: line-through;
  color: var(--text-muted-color);
}

.task-item .task-icons {
  display: flex;
  align-items: center;
}

.task-item .priority-icons {
  display: flex;
  gap: 2px;
  margin-right: 8px;
}

.task-item .priority-icon {
  color: var(--priority-color);
  font-size: 1.5rem;
  display: none;
}

.task-item[data-priority="1"] .priority-icon:nth-child(1),
.task-item[data-priority="2"] .priority-icon:nth-child(-n + 2),
.task-item[data-priority="3"] .priority-icon:nth-child(-n + 3) {
  display: inline-block;
}

.task-item .edit-btn,
.task-item .delete-btn {
  background: none;
  border: none;
  color: var(--text-muted-color);
  cursor: pointer;
  padding: 4px;
  margin-left: 4px;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.task-item .edit-btn:hover {
  color: var(--primary-color);
}

.task-item .delete-btn:hover {
  color: var(--danger-color);
}

/* Completed Counter in Sidebar */
.completed-counter-sidebar {
  margin-top: 20px;
  text-align: center;
  color: var(--text-muted-color);
  font-size: 0.9rem;
}

/* --- Main Content Area --- */
.main-content {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
  box-sizing: border-box;
  transition: margin-left 0.3s ease-in-out;
}

.main-content-bottom {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.current-task-container {
  background-color: transparent; /* Zmienione z var(--surface-color) na transparent */
  border-radius: 8px;
  padding: 20px;
  width: 100%;
  max-width: 100%;
  height: 100%;
  box-shadow: none;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  position: relative;
  overflow: visible; /* Zmienione z hidden na visible */
}

.current-task-display {
  font-size: 2.5rem;
  margin-bottom: 30px;
  padding: 20px;
  background-color: transparent; /* Usunięte szare tło */
  border-radius: 6px;
  width: 100%;
  height: min-content;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-sizing: border-box;
  position: relative; /* Zmienione z absolute na relative */
  z-index: 1; /* Nad innymi elementami */
}

#current-task-text {
  word-break: break-word; /* Handle long text */
  font-size: 5vw; /* Zmniejszony responsywny rozmiar czcionki */
  white-space: normal; /* Tekst może się zawijać */
  overflow: visible; /* Pokazuj cały tekst */
  width: 90%; /* Zmniejszona szerokość dla lepszego wyglądu */
  max-width: 1200px; /* Maksymalna szerokość */
  margin: 0 auto; /* Wycentrowanie */
  padding: 20px; /* Dodatkowy odstęp */
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.task-navigation {
  display: flex;
  margin-bottom: 20px;
  flex-direction: column;
  width: 100%;
  justify-content: center;
  align-items: center;
}

.nav-btn {
  background-color: var(--bg-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  cursor: pointer;
  font-size: 1.2rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 20px auto;
}

.nav-btn:hover {
  background-color: var(--surface-color);
  transform: scale(1.1);
}

.nav-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.nav-btn i {
  transition: transform 0.3s ease;
}

.nav-btn:hover i {
  transform: translateY(2px);
}

.nav-btn-top:hover i {
  transform: translateY(-2px);
}

.add-task-main-btn {
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  padding: 10px 20px;
  margin: 20px 0;
  cursor: pointer;
  font-size: 1rem;
  font-weight: bold;
  transition: background-color 0.3s ease;
}

.add-task-main-btn:hover {
  background-color: #3a80d2; /* Darker shade of primary color */
}

.completed-counter-main {
  color: var(--text-muted-color);
  font-size: 0.9rem;
  margin-top: 20px;
}

/* --- Modal Styling --- */
.modal {
  display: none; /* Hidden by default */
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--modal-overlay-color);
  z-index: 2000; /* Above everything */
  justify-content: center;
  align-items: center;
}

.modal.open {
  display: flex;
}

.modal-content {
  background-color: var(--surface-color);
  padding: 30px;
  border-radius: 8px;
  width: 90%;
  max-width: 400px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.modal-content h3 {
  margin-top: 0;
  margin-bottom: 20px;
  color: var(--text-color);
}

#task-input {
  width: calc(100% - 20px);
  padding: 10px;
  margin-bottom: 15px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-size: 1rem;
}

.priority-label {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
  cursor: pointer;
}

#priority-select {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-size: 1rem;
  cursor: pointer;
}

#priority-select:focus {
  outline: none;
  border-color: var(--primary-color);
}

.task-item .priority-icons {
  display: flex;
  gap: 2px;
  margin-right: 8px;
}

.task-item .priority-icon {
  color: var(--priority-color);
  font-size: 0.8rem;
  display: none;
}

.task-item[data-priority="1"] .priority-icon:nth-child(1),
.task-item[data-priority="2"] .priority-icon:nth-child(-n + 2),
.task-item[data-priority="3"] .priority-icon:nth-child(-n + 3) {
  display: inline-block;
}

.modal-buttons {
  display: flex;
  justify-content: space-between;
}

#save-task-btn,
#cancel-task-btn {
  padding: 8px 20px;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

#save-task-btn {
  background-color: var(--primary-color);
  color: white;
}

#save-task-btn:hover {
  background-color: #3a80d2; /* Darker shade of primary color */
}

#cancel-task-btn {
  background-color: #555;
  color: var(--text-color);
}

#cancel-task-btn:hover {
  background-color: #666;
}

/* --- Responsive Adjustments --- */
@media (max-width: 768px) {
  #current-task-text {
    font-size: 8vw; /* Zmniejszony rozmiar czcionki na mniejszych ekranach */
  }

  .modal-content {
    padding: 20px;
  }

  .current-task-container {
    padding: 15px;
    min-height: 70vh;
  }

  .current-task-display {
    padding: 15px;
  }
}

@media (max-width: 480px) {
  .login-container {
    padding: 30px 20px;
  }

  .current-task-container {
    padding: 20px 15px;
  }

  .nav-btn {
    padding: 6px 12px;
  }

  .add-task-main-btn {
    padding: 8px 16px;
  }
}

.complete-task-btn {
  background-color: transparent;
  color: var(--completed-color);
  border: none;
  padding: 15px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 24px;
  margin-left: 10px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.complete-task-btn:hover {
  transform: scale(1.1);
  color: #45a049;
}

.complete-task-btn i {
  transition: transform 0.3s ease;
}

.complete-task-btn:hover i {
  transform: rotate(360deg);
}

@keyframes taskComplete {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.8;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.task-completed {
  animation: taskComplete 0.5s ease-in-out;
  text-decoration: line-through;
  color: #888;
}

.action-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  align-items: center;
  margin: 20px 0;
}

.action-btn {
  background-color: transparent;
  color: var(--primary-color);
  border: none;
  padding: 15px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 24px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.action-btn:hover {
  transform: scale(1.1);
}

.action-btn i {
  transition: transform 0.3s ease;
}

.action-btn:hover i {
  transform: rotate(360deg);
}

#complete-task-btn {
  color: var(--completed-color);
}

#complete-task-btn:hover {
  color: #45a049;
}