:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --border: #e2e5ea;
  --text: #1c2430;
  --muted: #6b7686;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --warning: #b45309;
  --warning-bg: #fef3c7;
  --info: #2563eb;
  --info-bg: #dbeafe;
  --block: #b91c1c;
  --block-bg: #fee2e2;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(16, 24, 40, .08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}
#app { max-width: 880px; margin: 0 auto; padding: 24px 16px 80px; }

h1, h2, h3 { margin: 0 0 .4em; font-weight: 650; }
h1 { font-size: 1.35rem; }
h2 { font-size: 1.1rem; }
.muted { color: var(--muted); font-size: .9rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

input[type=text], input[type=password], textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: .95rem;
  font-family: inherit;
  background: #fff;
}
input:focus, textarea:focus { outline: 2px solid #bfdbfe; border-color: var(--primary); }
textarea { resize: vertical; min-height: 60px; }

button {
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  font-size: .95rem;
  font-family: inherit;
  cursor: pointer;
}
button:hover { filter: brightness(.97); }
button.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
button.primary:hover { background: var(--primary-dark); }
button.ghost { background: transparent; }
button.danger { color: var(--danger); border-color: #fecaca; }
button:disabled { opacity: .6; cursor: not-allowed; }

.topbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.topbar h1 { margin: 0; }
.back { color: var(--primary); text-decoration: none; font-size: .95rem; }

.proj-row { justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--border); }
.proj-row:last-child { border-bottom: none; }
.proj-name { font-weight: 600; color: var(--text); text-decoration: none; }
.proj-name:hover { color: var(--primary); }
.proj-info { display: flex; flex-direction: column; gap: 2px; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 600;
}
.badge.schema { background: #d1fae5; color: #065f46; }
.badge.noschema { background: #f3f4f6; color: var(--muted); }
.badge.inferred { background: #fef3c7; color: var(--warning); }

.error { color: var(--danger); font-size: .9rem; min-height: 1.2em; margin-top: 8px; }
.ok { color: #065f46; font-size: .9rem; margin-top: 8px; }

.warnings { margin: 8px 0; }
.warn { border-radius: 6px; padding: 8px 10px; margin: 4px 0; font-size: .88rem; }
.warn.warning { background: var(--warning-bg); color: var(--warning); }
.warn.block { background: var(--block-bg); color: var(--block); font-weight: 600; }
.warn.info { background: var(--info-bg); color: var(--info); }

/* upload */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px 20px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
}
.dropzone.drag { border-color: var(--primary); background: #eff6ff; }

/* chat */
.chat { display: flex; flex-direction: column; gap: 12px; }
.chat-log { display: flex; flex-direction: column; gap: 12px; }
.msg { max-width: 86%; padding: 12px 14px; border-radius: 12px; }
.msg.user { align-self: flex-end; background: var(--primary); color: #fff; }
.msg.assistant { align-self: flex-start; background: var(--card); border: 1px solid var(--border); }
pre.sql {
  background: #0f172a;
  color: #e2e8f0;
  padding: 12px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: .85rem;
  white-space: pre-wrap;
  word-break: break-word;
}
.msg-actions { display: flex; gap: 8px; align-items: center; margin-top: 8px; flex-wrap: wrap; }
.msg-actions button { padding: 6px 10px; font-size: .82rem; }
.correction textarea { min-height: 70px; }
.correction { margin-top: 8px; display: flex; flex-direction: column; gap: 6px; }

.chat-input { display: flex; flex-direction: column; gap: 8px; position: sticky; bottom: 0; background: var(--bg); padding-top: 8px; }
.chat-actions { display: flex; gap: 8px; justify-content: flex-end; align-items: center; flex-wrap: wrap; }

details.schema-summary { margin: 8px 0; }
details.schema-summary summary { cursor: pointer; font-weight: 600; }
.table-row { padding: 6px 0; border-bottom: 1px solid var(--border); }
.table-row:last-child { border-bottom: none; }
.cols { color: var(--muted); font-size: .85rem; }

.spinner { text-align: center; color: var(--muted); padding: 20px; }

.privacy-note {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  text-align: center;
  font-size: .75rem;
  color: var(--muted);
  background: rgba(245, 246, 248, .92);
  padding: 8px;
  border-top: 1px solid var(--border);
}

@media (max-width: 640px) {
  .msg { max-width: 96%; }
  #app { padding: 16px 10px 80px; }
}