/* Base Styles */
:root {
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --secondary-color: #6b7280;
  --danger-color: #ef4444;
  --success-color: #10b981;
  --text-color: #1f2937;
  --light-text: #6b7280;
  --bg-color: #f9fafb;
  --card-bg: #ffffff;
  --border-color: #e5e7eb;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --radius: 8px;
}

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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
}

/* .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
} */

.hidden {
  display: none !important;
}

/* Button Styles */
.btn {
  display: inline-block;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  transition: background-color 0.3s, transform 0.2s;
}

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

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

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

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

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

.btn-secondary:hover {
  background-color: #4b5563;
}

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

.btn-danger:hover {
  background-color: #dc2626;
}

.btn-small {
  padding: 6px 12px;
  font-size: 14px;
}

.auth-container {
  max-width: 500px;
  margin: 50px auto;
  background-color: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
}

.tab {
  flex: 1;
  text-align: center;
  padding: 15px;
  cursor: pointer;
  font-weight: 500;
  transition: background-color 0.3s;
}

.tab.active {
  background-color: var(--card-bg);
  border-bottom: 2px solid var(--primary-color);
  color: var(--primary-color);
}

.form-container {
  padding: 20px;
}

.form {
  display: none;
}

.form.active {
  display: block;
}

.form h2 {
  margin-bottom: 20px;
  text-align: center;
  color: var(--text-color);
}

.input-group {
  margin-bottom: 20px;
}

.input-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
}

.input-group input {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 16px;
}

.remember-me {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.remember-me input {
  margin-right: 10px;
}

.form button {
  width: 100%;
  margin-top: 10px;
}

.form-footer {
  margin-top: 20px;
  text-align: center;
}

.form-footer a {
  color: var(--primary-color);
  text-decoration: none;
}

.form-footer a:hover {
  text-decoration: underline;
}

/* App Container Styles
.app-container {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
} */

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  background-color: var(--primary-color);
  color: white;
}

.logo {
  display: flex;
  align-items: center;
}

.logo i {
  font-size: 24px;
  margin-right: 10px;
}

.logo h1 {
  font-size: 24px;
  font-weight: 600;
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 15px;
}

main {
  padding: 30px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

@media (min-width: 768px) {
  main {
    grid-template-columns: 1fr 1fr;
  }

  .timer-container {
    grid-column: 1 / -1;
  }
}

/* Timer Styles */
.timer-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

@media (min-width: 992px) {
  .timer-container {
    flex-direction: row;
  }

  .timer-display {
    flex: 2;
  }

  .timer-settings {
    flex: 1;
  }
}

.timer-display {
  background-color: var(--bg-color);
  padding: 30px;
  border-radius: var(--radius);
  text-align: center;
}

.timer-mode {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.timer-mode-btn {
  background: none;
  border: none;
  padding: 10px 15px;
  margin: 0 5px;
  cursor: pointer;
  border-radius: var(--radius);
  font-weight: 500;
  color: var(--text-color);
}

.timer-mode-btn.active {
  background-color: var(--primary-color);
  color: white;
}

.time {
  font-size: 80px;
  font-weight: 700;
  margin: 30px 0;
  color: var(--text-color);
}

.timer-controls {
  display: flex;
  justify-content: center;
  gap: 15px;
}

.timer-settings {
  background-color: var(--bg-color);
  padding: 30px;
  border-radius: var(--radius);
}

.timer-settings h3 {
  margin-bottom: 20px;
  color: var(--text-color);
}

.settings-group {
  margin-bottom: 15px;
}

.settings-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
}

.settings-group input {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

/* Notes Styles */
.notes-container {
  background-color: var(--bg-color);
  padding: 30px;
  border-radius: var(--radius);
}

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

.notes-header {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.notes-header input {
  flex: 1;
  padding: 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.notes-list {
  display: grid;
  gap: 15px;
}

.note-card {
  background-color: var(--card-bg);
  padding: 15px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform 0.2s;
}

.note-card:hover {
  transform: translateY(-3px);
}

.note-card h3 {
  margin-bottom: 10px;
  color: var(--text-color);
}

.note-card p {
  color: var(--light-text);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.note-card .note-date {
  margin-top: 10px;
  font-size: 12px;
  color: var(--light-text);
}

/* Tasks Styles */
.tasks-container {
  background-color: var(--bg-color);
  padding: 30px;
  border-radius: var(--radius);
}

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

.task-input {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.task-input input {
  flex: 1;
  padding: 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.task-list {
  list-style: none;
  margin-bottom: 20px;
}

.task-item {
  display: flex;
  align-items: center;
  padding: 10px;
  background-color: var(--card-bg);
  margin-bottom: 10px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.task-item input[type="checkbox"] {
  margin-right: 15px;
  width: 20px;
  height: 20px;
}

.task-item .task-text {
  flex: 1;
}

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

.task-item .delete-task {
  background: none;
  border: none;
  color: var(--danger-color);
  cursor: pointer;
  font-size: 18px;
}

.task-stats {
  text-align: right;
  color: var(--light-text);
}

footer {
  text-align: center;
  padding: 20px;
  color: var(--light-text);
  border-top: 1px solid var(--border-color);
}