:root {
  --primary-color: #356aff;
  --bg-color: #f5f5f5;
  --light-bg-color: #fff;
  --text-color: #111116;
  --light-text-color: #cdccd1;
  --primary-text-color: #fff;
}

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { border-radius: 30px; background: #f1f1f1; }
::-webkit-scrollbar-thumb { border-radius: 30px; background: var(--primary-color); }
::-webkit-scrollbar-thumb:hover { background: var(--bg-color); }

* { margin: 0; padding: 0; box-sizing: border-box; font-family: "Poppins", sans-serif; }

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  color: var(--text-color);
  background-color: var(--bg-color);
  padding-top: 80px;
}

body.dark {
  --bg-color: #111116;
  --light-bg-color: #1c1b20;
  --text-color: #fff;
  --light-text-color: #58575c;
}

/* Heading */
.main-heading {
  position: absolute;
  top: 20px;
  width: 100%;
  text-align: center;
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--text-color);
  z-index: 2;
}

body.dark .main-heading { color: var(--primary-text-color); }

.container {
  position: relative;
  width: 1200px;
  padding: 0 20px;
  display: flex;
  gap: 10px;
  margin-top: 70px;
}

.container .card {
  flex: 1;
  padding: 30px;
  border-radius: 20px;
  background-color: var(--light-bg-color);
}

.container .card .from,
.container .card .to { display: flex; align-items: center; gap: 20px; }

.container .card .from { margin-right: 20px; }
.container .card .to { margin-left: 20px; }

.container .card .heading {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--light-text-color);
  white-space: nowrap;
}

.dropdown-container { position: relative; margin-bottom: 10px; width: 100%; }

.dropdown-container .dropdown-toggle {
  display: flex;
  align-items: center;
  padding: 15px 20px;
  border-radius: 30px;
  background-color: var(--bg-color);
  cursor: pointer;
  transition: all 0.3s;
}

.dropdown-container .dropdown-toggle span { flex: 1; margin-left: 10px; }
.dropdown-container .dropdown-toggle ion-icon { font-size: 20px; transition: transform 0.3s ease; }
.dropdown-container.active .dropdown-toggle { border-radius: 20px 20px 0 0; }
.dropdown-container.active .dropdown-toggle ion-icon:last-child { transform: rotate(180deg); }

.dropdown-container .dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 300px;
  overflow: auto;
  display: none;
  padding: 20px;
  z-index: 1;
  list-style: none;
  flex-direction: column;
  background-color: var(--bg-color);
  transition: all 1s;
  border-radius: 0 0 20px 20px;
}

.dropdown-container .dropdown-menu::-webkit-scrollbar { display: none; }
.dropdown-container.active .dropdown-menu { display: flex; }
.dropdown-container .dropdown-menu li {
  padding: 10px 20px;
  border-radius: 20px;
  cursor: pointer;
  margin-bottom: 5px;
  border-bottom: 1px solid var(--light-bg-color);
  transition: all 0.3s ease;
}

.dropdown-container .dropdown-menu li:hover { background-color: var(--light-bg-color); }
.dropdown-container .dropdown-menu li.active {
  color: var(--primary-text-color);
  background-color: var(--primary-color);
}

.container .text-area { position: relative; }
.container textarea {
  width: 100%;
  padding: 20px;
  margin: 10px 0;
  background-color: transparent;
  resize: none;
  outline: none;
  border: none;
  color: var(--text-color);
  font-size: 18px;
  font-family: "Poppins", sans-serif;
}

.container .text-area .chars {
  position: absolute;
  bottom: 0;
  right: 0;
  padding: 10px;
  font-size: 0.8rem;
  color: var(--light-text-color);
}

/* Speak buttons */
.speak-btn {
  position: absolute;
  right: 10px;
  bottom: 35px;
  background: var(--primary-color);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  cursor: pointer;
  color: var(--primary-text-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.container .center {
  position: relative;
}

.swap-position {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: 30px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  border: 5px solid var(--bg-color);
  transition: all 0.3s ease;
  color: var(--primary-text-color);
  background-color: var(--primary-color);
}

.swap-position ion-icon { font-size: 25px; }
.swap-position:hover { transform: translateX(-50%) scale(1.1); }

.mode { position: fixed; bottom: 20px; right: 20px; z-index: 1; }
.toggle { position: relative; cursor: pointer; }
.toggle-track {
  width: 24px;
  height: 50px;
  border-radius: 30px;
  display: flex;
  align-items: center;
  flex-direction: column;
  padding: 3px 0;
  justify-content: space-between;
  border: 1px solid var(--light-text-color);
  background-color: var(--light-bg-color);
  transition: all 0.2s ease;
}

.toggle-checkbox { display: none; }
.toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--primary-color);
  transition: all 0.5s;
}

.toggle input:checked ~ .toggle-thumb { transform: translateY(25px); }
.toggle img { width: 20px; height: 20px; }

/* media queries */
@media (max-width: 800px) {
  .container { width: 100%; margin-top: 20px; flex-direction: column; }
  .container .card { width: 100%; }
  .container .card .from { margin-right: 0; }
  .container .card .to { margin-left: 0; }
  .container .card .from, .container .card .to { flex-direction: column; }
  .swap-position { top: 50%; left: 50%; transform: translate(-50%, -50%); }
  .swap-position:hover { transform: translate(-50%, -50%) scale(1.1); }
  .swap-position ion-icon { transform: rotate(90deg); }
}