@import url("https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700&display=swap");

:root {
  --chocolate-dark: #7B3F00;
  --chocolate-milk: #D2691E;
  --caramel-gold: #FFB347;
  --light-cream: #FFF8F0;
  --glass-white: rgba(255,248,240,0.4);
  --glass-dark: rgba(54,32,13,0.6);
  --text-dark-brown: #4A2C2A;
  --text-light-cream: #FFF8F0;
  --shadow-light: rgba(0, 0, 0, 0.15);
  --shadow-dark: rgba(0, 0, 0, 0.4);
  --glass-border: rgba(255, 255, 255, 0.2);
}

body {
  font-family: 'Montserrat', sans-serif;
  margin: 0;
  transition: background 0.4s ease, color 0.4s ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}

body.light-mode {
  background: linear-gradient(135deg, var(--light-cream) 0%, #F5E8DC 100%);
  color: var(--text-dark-brown);
}

body.dark-mode {
  background: linear-gradient(135deg, #2c1a00 0%, #0a0a0a 100%);
  color: var(--text-light-cream);
}

.top-left-logo {
  position: fixed;
  top: 16px;
  left: 16px;
  width: 60px;
  height: auto;
  z-index: 1000;
  border-radius: 10px;
  box-shadow: 0 0 8px var(--chocolate-dark);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--caramel-gold);
}
.top-left-logo:hover {
  transform: scale(1.1);
  box-shadow: 0 0 12px var(--caramel-gold);
}

.toggle-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 16px;
  margin-bottom: 30px;
  gap: 10px;
}

.switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--chocolate-milk);
  transition: 0.4s;
  border-radius: 34px;
  box-shadow: inset 0 0 5px rgba(0,0,0,0.2);
}

body.dark-mode .slider {
  background-color: var(--chocolate-dark);
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 4px;
  bottom: 3px;
  background-color: var(--text-light-cream);
  transition: 0.4s;
  border-radius: 50%;
  box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

input:checked + .slider {
  background-color: var(--caramel-gold);
}

input:checked + .slider:before {
  transform: translateX(26px);
  background-color: var(--chocolate-dark);
}

.toggle-label {
  font-size: 14px;
  color: var(--text-dark-brown);
}
body.dark-mode .toggle-label {
  color: var(--text-light-cream);
}

.todos-bg-container {
  padding: 25px;
  background: var(--glass-white);
  border-radius: 15px;
  box-shadow: 0 8px 30px var(--shadow-light);
  border: 1px solid var(--glass-border);
  width: 90%;
  max-width: 600px;
  box-sizing: border-box;
}

body.dark-mode .todos-bg-container {
  background: var(--glass-dark);
  box-shadow: 0 8px 30px var(--shadow-dark);
  border-color: rgba(255,248,240,0.1);
}

.todos-heading {
  font-size: 32px;
  margin-bottom: 20px;
  color: var(--chocolate-dark);
  text-align: center;
  font-weight: 700;
  text-shadow: 1px 1px 5px rgba(0,0,0,0.05);
}
body.dark-mode .todos-heading {
  color: var(--caramel-gold);
  text-shadow: 1px 1px 5px rgba(255,179,71,0.2);
}

.create-task-heading,
.todo-items-heading {
  font-size: 24px;
  margin-top: 25px;
  margin-bottom: 15px;
  color: var(--text-dark-brown);
  text-align: center;
}
body.dark-mode .create-task-heading,
body.dark-mode .todo-items-heading {
  color: var(--text-light-cream);
}

.create-task-heading-subpart,
.todo-items-heading-subpart {
  font-weight: 400;
  color: var(--chocolate-milk);
}
body.dark-mode .create-task-heading-subpart,
body.dark-mode .todo-items-heading-subpart {
  color: var(--caramel-gold);
}

.todo-user-input {
  width: calc(100% - 30px);
  padding: 15px;
  font-size: 16px;
  margin-top: 10px;
  border-radius: 10px;
  border: 1px solid var(--chocolate-milk);
  background-color: var(--glass-white);
  color: var(--text-dark-brown);
  box-shadow: inset 0 1px 4px rgba(0,0,0,0.1);
  box-sizing: border-box;
  transition: border-color 0.3s, box-shadow 0.3s, background-color 0.3s;
}
body.dark-mode .todo-user-input {
  background-color: var(--glass-dark);
  color: var(--text-light-cream);
  border-color: var(--caramel-gold);
}
.todo-user-input:focus {
  border-color: var(--caramel-gold);
  box-shadow: inset 0 1px 4px rgba(0,0,0,0.2), 0 0 8px rgba(255,179,71,0.4);
  outline: none;
}
.todo-user-input::placeholder {
  color: rgba(74,44,42,0.6);
}
body.dark-mode .todo-user-input::placeholder {
  color: rgba(255,248,240,0.7);
}

.button {
  background-color: var(--chocolate-milk);
  color: var(--text-light-cream);
  font-size: 16px;
  border: none;
  border-radius: 8px;
  padding: 12px 20px;
  margin-top: 15px;
  cursor: pointer;
  transition: background-color 0.3s, box-shadow 0.3s;
  box-shadow: 0 4px 10px var(--shadow-light);
}
.button:hover {
  background-color: var(--caramel-gold);
  box-shadow: 0 6px 15px var(--shadow-dark);
}
body.dark-mode .button {
  background-color: var(--chocolate-dark);
  color: var(--text-light-cream);
  box-shadow: 0 4px 10px var(--shadow-dark);
}
body.dark-mode .button:hover {
  background-color: var(--caramel-gold);
}

.todo-items-container {
  list-style-type: none;
  padding: 0;
  margin-top: 20px;
}

.todo-item-container {
  background: var(--glass-white);
  border-radius: 10px;
  padding: 12px 15px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  box-shadow: 0 3px 10px var(--shadow-light);
  border: 1px solid var(--glass-border);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
body.dark-mode .todo-item-container {
  background: var(--glass-dark);
  box-shadow: 0 3px 10px var(--shadow-dark);
  border-color: rgba(255,248,240,0.1);
}

.todo-item-container:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px var(--shadow-dark);
}

.checkbox-input {
  width: 18px;
  height: 18px;
  margin-right: 12px;
  border: 1px solid var(--chocolate-milk);
  border-radius: 4px;
  cursor: pointer;
  background-color: var(--text-light-cream);
  transition: background-color 0.3s, border-color 0.3s;
  appearance: none;
  position: relative;
}

body.dark-mode .checkbox-input {
  background-color: rgba(255,248,240,0.2);
  border-color: var(--caramel-gold);
}

.checkbox-input:checked {
  background-color: var(--caramel-gold);
  border-color: var(--caramel-gold);
}

.checkbox-input:checked::before {
  content: '✓';
  display: block;
  font-size: 14px;
  color: var(--text-light-cream);
  text-align: center;
  line-height: 18px;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
body.dark-mode .checkbox-input:checked::before {
  color: var(--chocolate-dark);
}

.checkbox-label {
  flex-grow: 1;
  font-size: 16px;
  color: var(--text-dark-brown);
  padding: 5px 0;
}
body.dark-mode .checkbox-label {
  color: var(--text-light-cream);
}

.checkbox-label.checked {
  text-decoration: line-through;
  color: rgba(74,44,42,0.6);
  opacity: 0.7;
}
body.dark-mode .checkbox-label.checked {
  color: rgba(255,248,240,0.6);
}

.delete-icon-container {
  font-size: 18px;
  cursor: pointer;
  margin-left: 15px;
  color: var(--chocolate-milk);
  transition: transform 0.2s ease, color 0.2s ease;
}
body.dark-mode .delete-icon-container {
  color: var(--caramel-gold);
}

.delete-icon-container:hover {
  transform: scale(1.2);
  color: red;
}

@media (max-width: 768px) {
  .todos-bg-container {
    padding: 20px;
  }
  .todos-heading {
    font-size: 28px;
  }
  .create-task-heading,
  .todo-items-heading {
    font-size: 20px;
  }
}

@media (max-width: 480px) {
  .todos-bg-container {
    padding: 15px;
    margin: 15px;
  }
  .todos-heading {
    font-size: 24px;
  }
  .create-task-heading,
  .todo-items-heading {
    font-size: 18px;
  }
  .todo-user-input {
    padding: 12px;
  }
  .button {
    padding: 10px 15px;
    font-size: 14px;
  }
  .todo-item-container {
    padding: 10px;
  }
  .checkbox-label {
    font-size: 14px;
  }
}
