* {
  box-sizing: border-box;
  font-family: "Segoe UI", sans-serif;
}

body {
  margin: 0;
  background: #f4f2ff;
}

/* Layout */
.app {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 230px;
  background: #0f1117;
  color: #fff;
  padding: 30px 20px;
}

.logo {
  color: #3ddc97;
  font-size: 22px;
}

.tagline {
  font-size: 13px;
  color: #aaa;
}

/* Main */
.main {
  flex: 1;
  padding: 30px;
}

/* Header */
.header h2 {
  margin: 0;
  font-size: 26px;
}

.header p {
  margin-top: 6px;
  color: #666;
}

/* Content */
.content {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 30px;
  margin-top: 30px;
}

/* Cards */
.card {
  background: #fff;
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

/* Upload */
.upload-box {
  border: 2px dashed #ccc;
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  margin: 20px 0;
  cursor: pointer;
}

.upload-box span {
  color: #00c389;
  font-weight: 600;
}

.upload-box.dragover {
  border-color: #00c389;
  background: #f0fff9;
}

.process-btn {
  width: 100%;
  padding: 12px;
  border-radius: 30px;
  background: #00c389;
  color: white;
  border: none;
  cursor: pointer;
}

.status {
  font-size: 13px;
  margin-top: 10px;
  color: #00a86b;
}

.status.error {
  color: #d32f2f;
}

/* Chat */
.chat-box {
  height: 350px;
  overflow-y: auto;
  padding: 12px;
  background: #fafafa;
  border-radius: 12px;
}

.placeholder {
  color: #aaa;
}

.user-msg {
  font-weight: 600;
  margin-top: 14px;
  animation: fadeInUp .3s ease;
}

.bot-msg {
  margin-top: 10px;
  animation: fadeInUp .3s ease;
}

/* Assistant formatting */
.bot-msg h2 {
  color: #00c389;
  font-size: 17px;
  margin: 6px 0;
}

.bot-msg ul {
  padding-left: 18px;
}

.bot-msg li {
  font-size: 14px;
  margin-bottom: 4px;
}

/* Input */
.chat-input {
  display: flex;
  gap: 10px;
  margin-top: 15px;
}

.chat-input input {
  flex: 1;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid #ccc;
}

.chat-input button {
  padding: 12px 22px;
  border-radius: 12px;
  background: #0f1117;
  color: white;
  border: none;
}

/* Typing */
.typing {
  font-size: 13px;
  color: #666;
  margin-top: 8px;
}

.typing span {
  animation: blink 1.4s infinite both;
}

.typing span:nth-child(2) { animation-delay: .2s; }
.typing span:nth-child(3) { animation-delay: .4s; }

.hidden {
  display: none;
}

/* Animations */
@keyframes blink {
  0% { opacity: .2; }
  20% { opacity: 1; }
  100% { opacity: .2; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 1023px) {
  .app { flex-direction: column; }
  .sidebar {
    width: 100%;
    display: flex;
    gap: 15px;
    padding: 15px;
  }
  .content { grid-template-columns: 1fr; }
}

@media (max-width: 767px) {
  .sidebar { display: none; }
  .main { padding: 15px; }
  .chat-input { flex-direction: column; }
  .chat-input button { width: 100%; }
}

/* ========== Upload Icon ========== */
.upload-icon {
  font-size: 32px;
  margin-bottom: 10px;
  transition: transform 0.3s ease;
}

/* ========== Drag & Drop Animation ========== */
.upload-box {
  transition: all 0.3s ease;
}

.upload-box.dragover {
  border-color: #00c389;
  background: #f0fff9;
  transform: scale(1.02);
}

.upload-box.dragover .upload-icon {
  transform: scale(1.2) rotate(-5deg);
}

/* ========== Uploaded Document Info ========== */
.doc-info {
  margin: 10px 0;
  font-size: 14px;
  color: #333;
  background: #f5f5ff;
  padding: 8px 12px;
  border-radius: 10px;
  animation: fadeInUp 0.3s ease;
}

/* ========== Active Document Label ========== */
.active-doc {
  font-size: 13px;
  background: #eef7ff;
  color: #004a99;
  padding: 6px 10px;
  border-radius: 8px;
  margin-bottom: 10px;
}

/* Hide utility */
.hidden {
  display: none;
}
/* Uploaded document display */
.doc-info {
  margin-top: 12px;
  padding: 10px 14px;
  background: #eef7ff;
  border-radius: 10px;
  border-left: 4px solid #00c389;
}

.doc-label {
  font-size: 12px;
  color: #666;
  display: block;
  margin-bottom: 4px;
}

.doc-name {
  font-size: 14px;
  font-weight: 600;
  color: #222;
  word-break: break-all;
}

/* Active document in chat */
.active-doc {
  font-size: 13px;
  margin-bottom: 10px;
  padding: 6px 10px;
  background: #f0fff9;
  border-left: 3px solid #00c389;
  border-radius: 6px;
  color: #333;
}
/* Assistant headings */
.ans-heading {
  font-size: 17px;
  margin: 14px 0 8px;
  color: #00a86b;
  font-weight: 700;
}

/* Bullet list */
.ans-list {
  padding-left: 18px;
  margin-bottom: 10px;
}

.ans-list li {
  margin-bottom: 6px;
  line-height: 1.5;
}

/* Highlight important values */
.highlight {
  font-weight: 700;
  color: #008060;
  background: #e8fff6;
  padding: 2px 6px;
  border-radius: 4px;
}

/* Improve bot message spacing */
.bot-msg {
  line-height: 1.6;
}
.source-line {
  font-size: 12px;
  color: #666;
  margin-bottom: 6px;
}

.ans-heading {
  font-size: 15px;
  font-weight: bold;
  margin-top: 12px;
  margin-bottom: 6px;
}

.ans-list {
  padding-left: 18px;
  margin-top: 5px;
}

.highlight {
  background: #d1fae5;
  padding: 2px 6px;
  border-radius: 6px;
  font-weight: bold;
}