/* ---------- tokens ---------- */
:root {
  --font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --radius: 14px; --radius-sm: 10px;
  --accent: #7c5cff; --accent-2: #22d3a6; --accent-grad: linear-gradient(135deg, #7c5cff, #4f8bff);
  --ease: cubic-bezier(.2, .8, .2, 1);
}
:root[data-theme="dark"] {
  --bg: #07090e; --bg-glow-1: rgba(124,92,255,.16); --bg-glow-2: rgba(34,211,166,.09);
  --panel: #0e121a; --panel-2: #141926; --panel-3: #1a2132;
  --line: #1f2736; --line-strong: #2d384d;
  --text: #eaedf4; --text-2: #b4bccd; --muted: #7e889c;
  --danger: #ff6b86; --warn: #ffbf5e; --ok: #2ee6b0;
  --code-bg: #0a0d14; --shadow: 0 10px 40px rgba(0,0,0,.45);
  --user-bubble: #141926;
  --focus: rgba(124,92,255,.35); color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #f5f6fa; --bg-glow-1: rgba(124,92,255,.12); --bg-glow-2: rgba(34,211,166,.10);
  --panel: #ffffff; --panel-2: #f1f3f9; --panel-3: #e8ebf4;
  --line: #e3e7f0; --line-strong: #cdd3e1;
  --text: #121624; --text-2: #3b4258; --muted: #6b7388;
  --danger: #d6264a; --warn: #b36b00; --ok: #0a9a76;
  --code-bg: #f6f7fb; --shadow: 0 10px 40px rgba(30,40,80,.12);
  --user-bubble: #ffffff;
  --focus: rgba(124,92,255,.28); color-scheme: light;
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: var(--font); font-size: 15px; line-height: 1.6; color: var(--text);
  background:
    radial-gradient(900px 520px at 85% -10%, var(--bg-glow-1), transparent 60%),
    radial-gradient(700px 420px at -5% 105%, var(--bg-glow-2), transparent 60%),
    var(--bg);
  background-attachment: fixed;
  transition: background-color .25s var(--ease), color .25s var(--ease);
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; color: inherit; }
pre, code { font-family: var(--mono); font-size: 13px; }
::selection { background: var(--focus); }
* { scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.muted { color: var(--muted); }
.grow { flex: 1; }

.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; letter-spacing: -.01em; }
.logo {
  width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center;
  background: var(--accent-grad); color: #fff; font-size: 14px;
  box-shadow: 0 6px 18px rgba(124,92,255,.4);
}
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }

/* ---------- controles ---------- */
.btn {
  border: 1px solid var(--line-strong); background: var(--panel); color: var(--text);
  border-radius: var(--radius-sm); padding: 9px 16px; cursor: pointer; font-weight: 500;
  transition: transform .15s var(--ease), border-color .15s, background .15s, filter .15s, box-shadow .15s;
}
.btn:hover { border-color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent-grad); border-color: transparent; color: #fff; font-weight: 600; box-shadow: 0 6px 18px rgba(124,92,255,.35); }
.btn.primary:hover { filter: brightness(1.08); box-shadow: 0 8px 24px rgba(124,92,255,.5); }
.btn.danger { background: transparent; border-color: var(--danger); color: var(--danger); }
.btn.danger:hover { background: color-mix(in srgb, var(--danger) 10%, transparent); }
.btn.ghost { background: transparent; }
.btn.small { padding: 4px 12px; font-size: 12.5px; border-radius: 8px; }
.btn:disabled { opacity: .55; cursor: wait; }
.btn:focus-visible, .icon-btn:focus-visible, .link:focus-visible, .conv-list button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.link { background: none; border: 0; padding: 0; color: inherit; cursor: pointer; text-align: left; font: inherit; }

.icon-btn {
  width: 38px; height: 38px; flex: none; border-radius: var(--radius-sm); border: 1px solid var(--line-strong);
  background: var(--panel); color: var(--text); cursor: pointer; display: grid; place-items: center; font-size: 16px;
  transition: border-color .15s, transform .15s var(--ease);
}
.icon-btn:hover { border-color: var(--accent); }
.icon-btn:active { transform: scale(.94); }
:root[data-theme="dark"] .i-sun, :root[data-theme="light"] .i-moon { display: none; }
.theme-fab { position: fixed; top: 16px; right: 16px; z-index: 5; }

label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 500; color: var(--text-2); }
input, select, textarea {
  background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 11px 13px; outline: none; transition: border-color .15s, box-shadow .15s, background .15s;
}
input:hover, select:hover, textarea:hover { border-color: var(--line-strong); }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--focus); background: var(--panel); }

/* ---------- login ---------- */
.login { min-height: 100%; display: grid; place-items: center; padding: 20px; }
.login-card { width: 100%; max-width: 400px; padding: 34px; display: flex; flex-direction: column; gap: 16px; animation: rise .5s var(--ease) both; }
.login-card .brand { font-size: 20px; }
.alert { background: color-mix(in srgb, var(--danger) 10%, transparent); border: 1px solid color-mix(in srgb, var(--danger) 45%, transparent); color: var(--danger); padding: 10px 12px; border-radius: var(--radius-sm); font-size: 14px; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* ---------- shell ---------- */
.shell { display: grid; grid-template-columns: 284px 1fr; height: 100%; }
.sidebar { background: var(--panel); border-right: 1px solid var(--line); padding: 20px 14px 16px; display: flex; flex-direction: column; gap: 18px; min-height: 0; }
.sidebar .brand { padding: 0 6px; }
.nav { display: flex; flex-direction: column; gap: 2px; }
.nav a, .nav span, .nav .link { padding: 9px 12px; border-radius: 9px; color: var(--text-2); text-decoration: none; font-size: 14px; font-weight: 500; transition: background .15s, color .15s; }
.nav a:hover, .nav .link:hover { background: var(--panel-2); color: var(--text); }
.nav a.active { background: var(--panel-2); color: var(--text); box-shadow: inset 3px 0 0 var(--accent); }
.nav .soon { color: var(--muted); display: flex; justify-content: space-between; align-items: center; opacity: .8; }
.nav em { font-style: normal; font-size: 10.5px; font-weight: 600; letter-spacing: .02em; border: 1px solid var(--line-strong); border-radius: 99px; padding: 1px 8px; }
.conv-head { display: flex; justify-content: space-between; align-items: center; padding: 0 6px; font-size: 11.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .09em; color: var(--muted); }
.conv-list { list-style: none; margin: 0; padding: 0; overflow-y: auto; flex: 1; display: flex; flex-direction: column; gap: 2px; }
.conv-list button { width: 100%; text-align: left; background: none; border: 0; padding: 9px 12px; border-radius: 9px; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 14px; color: var(--text-2); transition: background .15s, color .15s; }
.conv-list button:hover { background: var(--panel-2); color: var(--text); }
.conv-list button.active { background: var(--panel-3); color: var(--text); font-weight: 500; }
.side-foot { display: flex; gap: 8px; }

.main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 14px 32px; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 70%, transparent); backdrop-filter: blur(14px); }
.topbar h1 { font-size: 15.5px; margin: 0; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.provider { flex-direction: row; align-items: center; gap: 10px; white-space: nowrap; }
.provider select { min-width: 240px; padding: 9px 12px; }

/* ---------- mensagens ---------- */
.messages { flex: 1; overflow-y: auto; padding: 32px; display: flex; flex-direction: column; gap: 22px; scroll-behavior: smooth; }
.empty { margin: auto; max-width: 600px; text-align: center; color: var(--muted); animation: rise .5s var(--ease) both; }
.empty .logo { width: 56px; height: 56px; border-radius: 17px; font-size: 24px; margin: 0 auto 18px; }
.empty h2 { color: var(--text); font-size: 28px; letter-spacing: -.02em; margin: 0 0 8px; }
.empty p { margin: 0 auto; max-width: 480px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 22px; }
.chip { background: var(--panel); border: 1px solid var(--line); border-radius: 99px; padding: 8px 14px; font-size: 13.5px; color: var(--text-2); cursor: pointer; transition: border-color .15s, color .15s, transform .15s var(--ease); }
.chip:hover { border-color: var(--accent); color: var(--text); transform: translateY(-1px); }

.msg { max-width: 860px; width: 100%; margin: 0 auto; display: flex; gap: 14px; animation: rise .3s var(--ease) both; }
.msg .avatar { flex: none; width: 34px; height: 34px; border-radius: 11px; display: grid; place-items: center; font-size: 12.5px; font-weight: 700; }
.msg.user .avatar { background: var(--panel-3); border: 1px solid var(--line-strong); color: var(--text-2); }
.msg.assistant .avatar { background: var(--accent-grad); color: #fff; box-shadow: 0 5px 14px rgba(124,92,255,.35); }
.msg .body { min-width: 0; flex: 1; }
.msg.user .body { background: var(--user-bubble); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 16px; box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.msg .meta { font-size: 12px; font-weight: 500; color: var(--muted); margin-bottom: 4px; }
.msg .content p { margin: 0 0 10px; white-space: pre-wrap; word-wrap: break-word; }
.msg .content p:last-child { margin-bottom: 0; }
.msg .content code { background: var(--panel-3); padding: 1px 6px; border-radius: 6px; }
.msg.error .content { color: var(--danger); }

.code { border: 1px solid var(--line); border-radius: var(--radius); margin: 12px 0; overflow: hidden; background: var(--code-bg); }
.code-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 7px 12px; background: var(--panel-2); border-bottom: 1px solid var(--line); font-size: 12px; font-weight: 500; color: var(--muted); }
.code pre { margin: 0; padding: 14px 16px; overflow-x: auto; color: var(--text); }
.run-out .code-head { border-top: 1px dashed var(--line-strong); }
.run-out pre { color: var(--text-2); max-height: 340px; overflow: auto; }
.badge { font-size: 11px; font-weight: 600; padding: 2px 10px; border-radius: 99px; border: 1px solid var(--line-strong); }
.badge.safe, .badge.done { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 45%, transparent); }
.badge.approval, .badge.pending, .badge.running { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 45%, transparent); }
.badge.blocked, .badge.failed, .badge.rejected { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 45%, transparent); }

/* ---------- composer ---------- */
.composer-wrap { padding: 0 32px 22px; }
.composer {
  display: flex; align-items: flex-end; gap: 10px; max-width: 860px; margin: 0 auto; padding: 10px 10px 10px 18px;
  background: var(--panel); border: 1px solid var(--line-strong); border-radius: 18px; box-shadow: var(--shadow);
  transition: border-color .15s, box-shadow .15s;
}
.composer:focus-within { border-color: var(--accent); box-shadow: 0 0 0 4px var(--focus), var(--shadow); }
.composer textarea { flex: 1; resize: none; max-height: 240px; padding: 9px 0; border: 0; background: transparent; box-shadow: none !important; }
.composer .btn.primary { padding: 10px 20px; border-radius: 12px; }
.hint { max-width: 860px; margin: 8px auto 0; text-align: center; font-size: 12px; color: var(--muted); }

.content[data-label]::after { content: attr(data-label); margin-left: 10px; font-size: 12px; color: var(--muted); }
.typing { display: inline-flex; gap: 5px; padding: 6px 0; }
.typing i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); opacity: .3; animation: blink 1.2s infinite; }
.typing i:nth-child(2) { animation-delay: .2s; } .typing i:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 80%, 100% { opacity: .25; transform: scale(.85) } 40% { opacity: 1; transform: scale(1) } }

/* ---------- diálogos ---------- */
dialog { color: var(--text); padding: 26px; max-width: 520px; width: calc(100% - 32px); margin: auto; }
dialog.wide { max-width: 920px; }
dialog::backdrop { background: rgba(5,7,12,.6); backdrop-filter: blur(4px); }
dialog[open] { animation: rise .25s var(--ease) both; }
dialog h3 { margin: 0 0 6px; font-size: 18px; letter-spacing: -.01em; }
dialog form { display: flex; flex-direction: column; gap: 14px; }
dialog pre { background: var(--code-bg); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 14px; white-space: pre-wrap; word-break: break-all; margin: 0; }
.row { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }
.audit { max-height: 60vh; overflow: auto; font-size: 13px; margin: 14px 0; border: 1px solid var(--line); border-radius: var(--radius-sm); }
.audit div { display: grid; grid-template-columns: 170px 160px 1fr; gap: 12px; padding: 9px 14px; border-bottom: 1px solid var(--line); }
.audit div:last-child { border-bottom: 0; }
.audit span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.audit span:nth-child(2) { font-weight: 600; }

@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }

@media (max-width: 800px) {
  .shell { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  .sidebar { padding: 12px 14px; gap: 10px; border-right: 0; border-bottom: 1px solid var(--line); max-height: 38vh; }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .nav .soon { display: none; }
  .topbar { flex-direction: column; align-items: stretch; padding: 12px 16px; gap: 8px; }
  .messages { padding: 20px 16px; }
  .composer-wrap { padding: 0 12px 14px; }
  .provider select { min-width: 0; flex: 1; }
  .audit div { grid-template-columns: 1fr; gap: 2px; }
}