styles.css

/* General Styles */
:root {
  --primary-color: #4A90E2;
  --secondary-color: #50E3C2;
  --accent-color: #FF4081;
  --background-light: #FAFAFA;
  --background-dark: #121212;
  --card-light: #FFFFFF;
  --card-dark: #1E1E1E;
  --text-light: #E0E0E0;
  --text-dark: #333333;
  --font-family: 'Inter', sans-serif;
  --transition-speed: 0.4s;
  --button-hover: #3ed5a5;
  --title-color-light: #4A90E2;
  --title-color-dark: #FFD700;
  --header-gradient-light: linear-gradient(135deg, #4A90E2, #6DD5FA, #50E3C2);
  --header-gradient-dark: linear-gradient(135deg, #232526, #414345);
}

body {
  font-family: var(--font-family);
  margin: 0;
  padding: 0;
  background-color: var(--background-light);
  color: var(--text-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-height: 100vh;
  transition: background-color var(--transition-speed), color var(--transition-speed);
}

body.dark-mode {
  background-color: var(--background-dark);
  color: var(--text-light);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 40px 20px;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  margin: 0;
  font-size: 3rem;
  color: var(--title-color-light);
  transition: color var(--transition-speed);
}

body.dark-mode .hero h1 {
  color: var(--title-color-dark);
}

.hero .tagline {
  font-size: 1.2rem;
  margin-top: 10px;
  color: var(--text-dark);
}

body.dark-mode .hero .tagline {
  color: var(--text-light);
}

.hero .description {
  font-size: 1rem;
  margin-top: 10px;
  color: var(--text-dark);
}

body.dark-mode .hero .description {
  color: var(--text-light);
}

/* Header */
header {
  width: 100%;
  background: var(--header-gradient-light);
  color: var(--text-light);
  padding: 0; /* Header mainly wraps the hero */
  box-shadow: 0px 4px 12px rgba(0, 0, 0, 0.2);
  border-radius: 0 0 20px 20px;
  transition: background var(--transition-speed);
}

body.dark-mode header {
  background: var(--header-gradient-dark);
}

/* Theme Toggle Button (more compact) */
#theme-toggle {
  margin-top: 20px;
  background-color: var(--accent-color);
  color: var(--text-light);
  border: none;
  padding: 8px 16px; /* Reduced padding for a more compact button */
  border-radius: 50px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background-color var(--transition-speed), transform var(--transition-speed);
}

#theme-toggle:hover {
  background-color: var(--button-hover);
  transform: scale(1.05);
}

/* Main Layout */
main {
  width: 90%;
  max-width: 1200px;
  margin-top: 40px;
  display: grid;
  gap: 30px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Sections Common Styles */
section {
  background-color: var(--card-light);
  border-radius: 15px;
  padding: 25px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  transition:
    transform var(--transition-speed),
    box-shadow var(--transition-speed),
    background-color var(--transition-speed);
  color: var(--text-dark);
}

section:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

body.dark-mode section {
  background-color: var(--card-dark);
  color: var(--text-light);
}

h2 {
  margin-top: 0;
  font-size: 1.8rem;
  color: var(--primary-color);
  font-weight: 600;
}

/* Timer Form & Controls */
input, select, button {
  font-size: 1rem;
  padding: 12px;
  margin: 12px 0;
  width: 100%;
  box-sizing: border-box;
  border: 2px solid #E0E0E0;
  border-radius: 10px;
  transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

input:focus,
select:focus,
button:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 8px var(--primary-color);
  outline: none;
}

button {
  background-color: var(--primary-color);
  color: var(--text-light);
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: background-color var(--transition-speed), transform var(--transition-speed);
}

button:hover {
  background-color: var(--button-hover);
  transform: scale(1.05);
}

/* Countdown Timer Styles */
#countdown-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 1.5rem;
  margin-top: 20px;
  animation: fadeIn var(--transition-speed) ease-in-out;
}

#time-remaining span {
  font-weight: bold;
  font-size: 1.25rem;
  color: var(--secondary-color);
}

/* Pomodoro Timer Styles */
#pomodoro-display {
  text-align: center;
  font-size: 2rem;
  margin-top: 20px;
  animation: fadeIn var(--transition-speed) ease-in-out;
}

/* To-Do List Styles */
#task-list {
  list-style: none;
  padding: 0;
}

#task-list li {
  background-color: var(--card-light);
  padding: 10px 15px;
  border: 1px solid #DDD;
  margin-bottom: 10px;
  border-radius: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color var(--transition-speed);
  overflow: hidden;
  gap: 10px;
  word-break: break-word;
}

body.dark-mode #task-list li {
  background-color: var(--card-dark);
}

#task-list li button {
  background-color: var(--accent-color);
  color: var(--text-light);
  border: none;
  padding: 8px 16px;
  border-radius: 20px;
  cursor: pointer;
  transition: background-color var(--transition-speed), transform 0.2s ease-in-out;
  flex-shrink: 0;
}

#task-list li button:hover {
  background-color: #C0001A;
  transform: scale(1.05);
}

#task-list li span {
  flex-grow: 1;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

/* Clear All Tasks Button */
#clear-tasks {
  background-color: var(--accent-color);
  color: var(--text-light);
  border: none;
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color var(--transition-speed), transform var(--transition-speed);
  margin-bottom: 10px;
}

#clear-tasks:hover {
  background-color: #C0001A;
  transform: scale(1.05);
}

/* How It Works Section */
#how-it-works ol {
  margin: 0;
  padding-left: 20px;
}

#how-it-works li {
  margin-bottom: 10px;
  line-height: 1.6;
}

/* FAQ Section */
#faq details {
  margin-bottom: 10px;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
  background-color: var(--card-light);
}

body.dark-mode #faq details {
  background-color: var(--card-dark);
  border-color: #444;
}

#faq summary {
  font-weight: bold;
  cursor: pointer;
  outline: none;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  header h1 {
    font-size: 1.6rem;
  }
  section {
    padding: 20px;
  }
  input,
  select,
  button {
    font-size: 0.9rem;
    padding: 10px;
  }
}

/* Visually Hidden Class for Accessibility */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Toast Notification Styles */
.toast-notification {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--primary-color);
  color: var(--text-light);
  padding: 10px 20px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  z-index: 1000;
  opacity: 0.9;
  font-size: 1rem;
}