:root {
  --bg: #0f1419;
  --card: #1a2029;
  --line: #2a323d;
  --text: #e6edf3;
  --muted: #8b98a5;
  --accent: #3b82f6;
  --accent-hover: #2f6fd6;
  --ok: #22c55e;
  --err: #ef4444;
  --warn: #f59e0b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  justify-content: center;
  padding: 32px 16px;
  min-height: 100vh;
}

.card {
  width: 100%;
  max-width: 680px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px 28px 32px;
}

h1 { margin: 0 0 4px; font-size: 22px; }
.sub { margin: 0 0 22px; color: var(--muted); font-size: 14px; line-height: 1.5; }

label {
  display: block;
  margin: 16px 0 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

input[type="text"],
input[type="password"],
textarea {
  width: 100%;
  background: #0f141b;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  padding: 11px 12px;
  font-size: 14px;
  font-family: inherit;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}

textarea { resize: vertical; }

button {
  margin-top: 20px;
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 12px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}
button:hover { background: var(--accent-hover); }
button:disabled { opacity: 0.5; cursor: default; }

.form-error { color: var(--err); font-size: 13px; margin-top: 12px; }

/* Feed */
.feed-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
}
.dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--warn);
  animation: pulse 1.3s ease-in-out infinite;
}
.dot.done { background: var(--ok); animation: none; }
.dot.error { background: var(--err); animation: none; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }

.feed {
  background: #0c1118;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  max-height: 340px;
  overflow-y: auto;
  font-family: "SF Mono", Consolas, "Courier New", monospace;
  font-size: 12.5px;
  line-height: 1.65;
}
.feed .line { white-space: pre-wrap; word-break: break-word; }
.feed .ts { color: var(--muted); margin-right: 8px; }
.feed .line.user-msg { color: #93c5fd; }
.feed .line.warn { color: var(--warn); }

/* Inline buttons (Stop) */
.btn-inline {
  margin: 0 0 0 auto;
  width: auto;
  padding: 5px 12px;
  font-size: 12.5px;
}
.btn-danger { background: var(--err); }
.btn-danger:hover { background: #d23b3b; }

/* Chat input */
#chat-area {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
#chat-area input {
  flex: 1;
  margin: 0;
}
#chat-area button {
  width: auto;
  margin: 0;
  padding: 0 18px;
}

/* Result actions */
#result-section h2 { font-size: 16px; margin: 18px 0 10px; }
.result-actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}
.result-actions button { margin: 0; }
.btn-secondary {
  width: auto;
  padding: 9px 16px;
  font-size: 13.5px;
  background: #2a323d;
}
.btn-secondary:hover { background: #353f4d; }

/* Upload controls */
.upload-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.upload-row .btn-secondary { margin: 0; }
.upload-hint { color: var(--muted); font-size: 12px; }
.upload-status { color: var(--muted); font-size: 13px; margin-top: 8px; }
#form-upload-list { margin-top: 10px; }
#form-upload-list:empty { margin: 0; }

/* Files ready for download */
#files-section h2 { font-size: 16px; margin: 18px 0 10px; }
.files-list { list-style: none; padding: 0; margin: 0; }
.files-list li {
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-bottom: 8px;
  background: #0c1118;
}
.files-list a {
  color: #93c5fd;
  text-decoration: none;
  font-weight: 600;
  word-break: break-all;
}
.files-list a:hover { text-decoration: underline; }
.files-list .fsize { color: var(--muted); font-size: 12.5px; }

/* Rendered result markdown */
.result h2, .result h3, .result h4 { line-height: 1.3; margin: 10px 0 6px; }
.result p { margin: 6px 0; }
.result ul { margin: 6px 0; padding-left: 22px; }
.result a { color: #93c5fd; }
.result strong { color: #fff; }

/* Prompt area */
#prompt-area {
  margin-top: 16px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 16px;
  background: #11233f;
}
#prompt-area .reason { font-size: 13.5px; margin: 0 0 10px; line-height: 1.5; }
#prompt-area .reason .url { color: var(--muted); display: block; margin-top: 4px; word-break: break-all; }

.result {
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}
.result.ok { border-color: var(--ok); }
.result.error { border-color: var(--err); }