/* Base styling */
body {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f5f7fa;
  color: #333;
  transition: background 0.3s, color 0.3s;
}

body.dark {
  background-color: #1e1e1e;
  color: #eee;
}

a {
  color: inherit;
  text-decoration: none;
}

header {
  background: #4a90e2;
  color: white;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

header h1 {
  font-size: 1.5rem;
  margin: 0;
}

nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

nav a,
nav button {
  background: white;
  color: #4a90e2;
  padding: 0.5rem 0.75rem;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
}

nav button:hover,
nav a:hover {
  background: #e0ecff;
}

/* Dashboard grid */
.dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  padding: 2rem;
}

.summary-card {
  background: white;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

body.dark .summary-card {
  background: #2c2c2c;
  box-shadow: none;
}

.summary-card h2 {
  margin-top: 0;
}

.summary-card .btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  background: #4a90e2;
  color: white;
  border: none;
  border-radius: 6px;
  text-align: center;
}

.summary-card .btn:hover {
  background: #357bd8;
}

/* Tool pages */
.tool-page {
  padding: 2rem;
  max-width: 600px;
  margin: auto;
}

.tool-page input,
.tool-page select,
.tool-page button {
  display: block;
  width: 100%;
  margin-bottom: 1rem;
  padding: 0.75rem;
  font-size: 1rem;
  border-radius: 8px;
  border: 1px solid #ccc;
}

.tool-page button {
  background: #4a90e2;
  color: white;
  border: none;
}

.tool-page button:hover {
  background: #357bd8;
}

#taskList li,
#moodLog li {
  padding: 0.5rem;
  background: #f0f0f0;
  margin-bottom: 0.5rem;
  border-radius: 6px;
}

body.dark #taskList li,
body.dark #moodLog li {
  background: #333;
}

#cardContainer {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.flashcard {
  padding: 1rem;
  background: #ffffff;
  border-radius: 8px;
  border: 1px solid #ccc;
  width: 120px;
  height: 100px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  word-wrap: break-word;
}

body.dark .flashcard {
  background: #2b2b2b;
  color: #eee;
}

footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  color: #777;
}