/* Copilot — καθαρό ChatGPT-style layout, χωρίς framework. */
:root {
  --bg: #f4f6fb;
  --panel: #ffffff;
  --ink: #1a2233;
  --muted: #6b7487;
  --accent: #2653c9;   /* royal blue (παλέτα James) */
  --accent-dark: #1c3564;
  --user-bubble: #2653c9;
  --border: #e3e7f0;
  --danger: #b3261e;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  display: flex;
  flex-direction: column;
}

/* Top bar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  gap: 8px; flex-wrap: wrap;
}
.brand { font-size: 17px; }
.topbar nav { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.pill {
  display: inline-block; padding: 5px 12px; border-radius: 999px;
  background: var(--bg); color: var(--ink);
  text-decoration: none; font-size: 14px; border: 1px solid var(--border);
}
.pill.low { background: #fdecea; color: var(--danger); border-color: #f5c6c0; }
.pill.dev { background: #fff7e0; border-color: #f0e0a0; }
.muted { color: var(--muted); }

/* Chat */
.chat {
  flex: 1; display: flex; flex-direction: column;
  width: 100%; max-width: 860px; margin: 0 auto; padding: 0 12px 12px;
  min-height: 0;
}
.log { flex: 1; overflow-y: auto; padding: 16px 4px; min-height: 0; }
.msg { display: flex; margin: 8px 0; }
.msg.user { justify-content: flex-end; }
.bubble {
  max-width: 78%; padding: 10px 14px; border-radius: 16px;
  white-space: pre-wrap; word-wrap: break-word;
  background: var(--panel); border: 1px solid var(--border);
}
.msg.user .bubble { background: var(--user-bubble); color: #fff; border: none; }

/* Markdown μέσα σε assistant bubbles */
.bubble.md { white-space: normal; }
.bubble.md p { margin: 0 0 8px; }
.bubble.md p:last-child { margin-bottom: 0; }
.bubble.md h3, .bubble.md h4 { margin: 10px 0 6px; font-size: 15px; color: var(--accent-dark); }
.bubble.md ul, .bubble.md ol { margin: 4px 0 8px; padding-left: 22px; }
.bubble.md li { margin: 3px 0; }
.bubble.md code {
  background: var(--bg); border: 1px solid var(--border); border-radius: 5px;
  padding: 1px 5px; font-size: 13.5px;
}
.bubble.md .tablewrap { overflow-x: auto; margin: 6px 0 8px; }
.bubble.md table { font-size: 13.5px; }
.bubble.md th, .bubble.md td { padding: 5px 8px; }
.bubble.typing { color: var(--muted); letter-spacing: 3px; }
.bubble.confirm { border-left: 4px solid #e8a13a; }
.bubble.confirm button {
  margin: 8px 8px 0 0; padding: 7px 14px; border-radius: 8px; border: none;
  background: var(--accent); color: #fff; cursor: pointer; font-size: 14px;
}
.bubble.confirm button.ghost { background: var(--bg); color: var(--ink); border: 1px solid var(--border); }
.bubble.files { display: flex; flex-direction: column; gap: 6px; }
.filelink {
  display: inline-block; padding: 8px 12px; border-radius: 10px;
  background: var(--bg); border: 1px solid var(--border);
  color: var(--accent-dark); text-decoration: none; font-weight: 600; font-size: 14px;
}
.genimg { max-width: 100%; border-radius: 10px; }

/* Attachments bar */
.attachments { padding: 6px 2px; display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  background: var(--panel); border: 1px solid var(--border);
  padding: 4px 8px; border-radius: 999px; font-size: 13px;
}
.chip button { border: none; background: none; cursor: pointer; color: var(--danger); font-size: 14px; }

/* Composer */
.composer {
  display: flex; gap: 8px; align-items: flex-end;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 16px; padding: 8px;
}
.composer textarea {
  flex: 1; resize: none; border: none; outline: none;
  font: inherit; background: transparent; max-height: 160px;
}
.composer button {
  border: none; border-radius: 10px; cursor: pointer;
  font-size: 17px; padding: 8px 12px; background: var(--bg);
}
.composer #send { background: var(--accent); color: #fff; }
.composer button:disabled { opacity: .5; cursor: default; }
.composer-foot {
  display: flex; justify-content: space-between; align-items: center;
  padding: 6px 4px 0; font-size: 13px;
}
.linkbtn { border: none; background: none; color: var(--muted); cursor: pointer; font-size: 13px; text-decoration: underline; }

/* Login */
.login-body { display: grid; place-items: center; padding: 20px; }
.login-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 16px;
  padding: 32px; width: 100%; max-width: 380px; text-align: center;
}
.login-card h1 { margin: 0 0 4px; }
.login-card form { display: flex; flex-direction: column; gap: 14px; margin-top: 20px; text-align: left; }
.login-card label { font-size: 14px; color: var(--muted); display: flex; flex-direction: column; gap: 4px; }
.login-card input {
  padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; font: inherit;
}
.login-card button {
  padding: 11px; border: none; border-radius: 10px; background: var(--accent);
  color: #fff; font: inherit; font-weight: 600; cursor: pointer;
}
.error { color: var(--danger); font-size: 14px; }

/* Tables (credits/admin) */
.page { width: 100%; max-width: 860px; margin: 0 auto; padding: 16px 12px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 18px; margin-bottom: 14px; }
.card h2 { margin: 0 0 10px; font-size: 17px; }
.stat { font-size: 30px; font-weight: 700; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 640px) { .row2 { grid-template-columns: 1fr; } .bubble { max-width: 90%; } }