/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", Arial, sans-serif;
}

body {
  background: var(--bg, #fff5f2);
  color: var(--text, #333);
  min-height: 100vh;
  transition: background 0.3s, color 0.3s;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 40px;
  border-bottom: 1px solid var(--border-color, #f1e1de);
  background: var(--header-bg, #fff5f2);
}

header h1 {
  font-size: 1.2rem;
  font-weight: 600;
}

nav a {
  margin-left: 20px;
  text-decoration: none;
  font-weight: 600;
  color: var(--nav, #444);
  padding: 6px 12px;
  border-radius: 6px;
  transition: background 0.3s, color 0.3s;
}

nav a.active, nav a:hover {
  background: #ff7051;
  color: white;
}

/* Main */
main {
  padding: 40px;
  max-width: 1000px;
  margin: 0 auto;
}
/* Center align home screen */
#home {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 70vh;
}

#home textarea,
#home input,
#home button {
  width: 80%;
  max-width: 500px;
}

/* Inputs */
textarea {
  width: 100%;
  min-height: 120px;
  border-radius: 8px;
  border: 1px solid var(--border-color, #ddd);
  padding: 10px;
  margin-bottom: 12px;
  resize: vertical;
  background: var(--input-bg, white);
  color: var(--text, #333);
}

input[type="file"] {
  margin-bottom: 10px;
}

.controls {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

button {
  padding: 8px 16px;
  border: none;
  border-radius: 20px;
  cursor: pointer;
  background: #ff7051;
  color: white;
  font-weight: bold;
  transition: background 0.3s;
}

button:hover {
  background: #e45c3f;
}

button:disabled {
  background: #ccc;
  cursor: not-allowed;
}

select {
  padding: 10px 14px;
  border: 1px solid var(--border-color, #ddd);
  border-radius: 8px;
  font-size: 0.95rem;
  background: var(--input-bg, white);
  color: var(--text, #333);
}

/* Translator tabs */
.tabs {
  display: flex;
  gap: 24px;
  border-bottom: 2px solid var(--border-color, #f2e5e2);
  margin-bottom: 16px;
}

.tabs button {
  background: none;
  border: none;
  font-weight: 600;
  padding-bottom: 8px;
  cursor: pointer;
  font-size: 1rem;
  color: #999;
}

.tabs button.active {
  color: var(--text, #111);
  border-bottom: 2px solid #ff7051;
}

.tab-content {
  background: var(--content-bg, white);
  border-radius: 12px;
  padding: 40px;
  text-align: center;
  border: 1px solid var(--border-color, #f2e5e2);
  min-height: 300px;
}

.translation-results {
  text-align: left;
}

.translation-results > div {
  padding: 15px;
  margin-bottom: 15px;
  border-radius: 8px;
  background: var(--result-bg, #f9f9f9);
  border-left: 4px solid #ff7051;
}

/* History */
.history-list {
  list-style: none;
  padding: 0;
}

.history-list li {
  background: var(--content-bg, white);
  padding: 12px;
  border-radius: 6px;
  margin-bottom: 8px;
  border: 1px solid var(--border-color, #eee);
}

.history-item {
  padding: 10px;
}

.history-item small {
  color: #888;
  font-style: italic;
}

/* Settings */
.setting-item {
  margin-bottom: 25px;
  padding: 15px;
  background: var(--content-bg, white);
  border-radius: 8px;
  border: 1px solid var(--border-color, #eee);
}

.setting-item label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

.setting-item select {
  width: 100%;
  max-width: 300px;
}

/* Dark mode */
body.dark {
  --bg: #1e1e1e;
  --text: #f5f5f5;
  --nav: #ddd;
  --header-bg: #2c2c2c;
  --border-color: #444;
  --input-bg: #2c2c2c;
  --content-bg: #2c2c2c;
  --result-bg: #3c3c3c;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  header {
    flex-direction: column;
    padding: 16px 20px;
  }
  
  nav {
    margin-top: 15px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
  }
  
  nav a {
    margin-left: 0;
  }
  
  main {
    padding: 20px;
  }
  
  .controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .tabs {
    flex-wrap: wrap;
  }
}
.chat-box {
  border: 1px solid #ccc;
  padding: 10px;
  height: 400px;
  overflow-y: auto;
  background: #fff;
  border-radius: 10px;
  margin-bottom: 15px;
}

.message {
  padding: 10px;
  margin: 8px 0;
  border-radius: 10px;
  max-width: 70%;
  word-wrap: break-word;
}

.message.user {
  background: #ffb6a3;
  align-self: flex-end;
  margin-left: auto;
}

.message.bot {
  background: #e8e8e8;
  margin-right: auto;
}

.chat-controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

#user-input {
  width: 100%;
  height: 60px;
  border-radius: 8px;
  padding: 8px;
  resize: none;
}