/* Agent Shell — minimal styling, no framework. */

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  margin: 0;
  display: grid;
  grid-template-columns: 280px 1fr;
  grid-template-rows: 56px 1fr;
  height: 100vh;
  font-size: 14px;
  color: #222;
}

header {
  grid-column: 1 / 3;
  background: #0d1117;
  color: #f0f6fc;
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 16px;
}
header h1 { margin: 0; font-size: 1rem; font-weight: 600; }
header input {
  padding: 6px 10px;
  width: 320px;
  font-family: ui-monospace, "SF Mono", Monaco, monospace;
  font-size: 0.85rem;
  border: 1px solid #30363d;
  background: #161b22;
  color: #f0f6fc;
  border-radius: 4px;
}
header input:focus { outline: 2px solid #58a6ff; outline-offset: -1px; }
header small { opacity: 0.7; font-size: 0.7rem; max-width: 360px; }

aside {
  background: #f6f8fa;
  border-right: 1px solid #d0d7de;
  padding: 16px;
  overflow-y: auto;
}
aside h2 { margin: 0 0 12px; font-size: 0.75rem; text-transform: uppercase;
           letter-spacing: 0.05em; color: #57606a; }
aside ul { list-style: none; padding: 0; margin: 0; }
aside li { padding: 10px 0; border-bottom: 1px solid #eaeef2; font-size: 0.85rem; }
aside li b { display: block; color: #0969da; font-family: ui-monospace, monospace; }
aside li span { color: #57606a; font-size: 0.78rem; line-height: 1.4; display: block;
                margin-top: 4px; }
aside .hint { color: #57606a; font-size: 0.75rem; margin-top: 16px;
              padding: 8px; background: #fff8c5; border-radius: 4px; border: 1px solid #d4a72c; }

main {
  display: flex;
  flex-direction: column;
  padding: 16px;
  overflow: hidden;
}

#conversation {
  flex: 1;
  overflow-y: auto;
  padding-right: 8px;
}

.msg {
  padding: 10px 14px;
  margin: 6px 0;
  border-radius: 8px;
  max-width: 85%;
  white-space: pre-wrap;
  word-wrap: break-word;
  line-height: 1.5;
}
.msg.user      { background: #ddf4ff; margin-left: auto; }
.msg.assistant { background: #f6f8fa; border: 1px solid #d0d7de; }
.msg.error     { background: #ffebe9; color: #82071e; border: 1px solid #ffcecb; }
.msg.thinking  { background: #f6f8fa; border: 1px dashed #d0d7de;
                 color: #57606a; font-style: italic; }
.msg.thinking::after {
  content: "";
  display: inline-block;
  width: 1em;
  text-align: left;
  animation: dots 1.2s steps(4, end) infinite;
}
@keyframes dots {
  0%   { content: ""; }
  25%  { content: "."; }
  50%  { content: ".."; }
  75%  { content: "..."; }
  100% { content: ""; }
}

.tool-use, .tool-result {
  background: #fff8c5;
  border-left: 3px solid #d4a72c;
  padding: 8px 12px;
  margin: 6px 0;
  font-size: 0.82rem;
  border-radius: 0 4px 4px 0;
}
.tool-use b, .tool-result b { font-family: ui-monospace, monospace;
                               display: block; margin-bottom: 4px; }
.tool-result.ok   { background: #dafbe1; border-left-color: #1a7f37; }
.tool-result.fail { background: #ffebe9; border-left-color: #cf222e; }

pre {
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  font-size: 0.78rem;
  font-family: ui-monospace, "SF Mono", Monaco, monospace;
  max-height: 320px;
  overflow-y: auto;
}

form {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  border-top: 1px solid #d0d7de;
  padding-top: 12px;
}
textarea {
  flex: 1;
  font-family: inherit;
  font-size: 0.9rem;
  padding: 10px;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  resize: vertical;
}
textarea:focus { outline: 2px solid #0969da; outline-offset: -1px; }
button {
  padding: 0 24px;
  background: #1f883d;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
}
button:hover { background: #1a7f37; }
button:disabled { background: #94d3a2; cursor: not-allowed; }

/* ── Narrow viewports (phones, ≤768px) ───────────────────────────── */
/* Desktop: 280px sidebar + main. On a phone that overflows + the
   header's 320px-wide API-key input pushes layout horizontally.
   On mobile we collapse to a single column, hide the skill sidebar
   (skills are still discoverable via /skills and the README), and
   let the API-key input wrap onto its own row in the header. */
@media (max-width: 768px) {
  body {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    /* dvh tracks the *dynamic* viewport height — without this, mobile
       Safari's collapsing URL bar causes bottom-cutoff on the chat box. */
    height: 100dvh;
  }

  header {
    grid-column: 1;
    flex-wrap: wrap;
    padding: 8px 12px;
    gap: 8px;
    height: auto;
    min-height: 56px;
  }
  header h1 { font-size: 0.9rem; }
  header input {
    width: 100%;
    flex: 1 1 100%;
    order: 99;        /* drop key input onto its own row */
  }
  header small { display: none; }   /* the long descriptor text steals too much width */

  aside { display: none; }

  main { padding: 10px; }

  .msg {
    max-width: 100%;
    font-size: 0.92rem;
  }

  .tool-use, .tool-result {
    font-size: 0.78rem;
    padding: 6px 10px;
  }
  pre {
    font-size: 0.7rem;
    max-height: 240px;
  }

  form {
    margin-top: 8px;
    padding-top: 8px;
  }
  textarea {
    font-size: 0.95rem;
    padding: 8px;
  }
  button {
    padding: 0 14px;
    font-size: 0.9rem;
  }
}

/* Extra-narrow (≤380px, e.g. iPhone SE in portrait): stack form */
@media (max-width: 380px) {
  form { flex-direction: column; }
  button { width: 100%; padding: 10px; }
}