/* ================= Chato ================= */
:root {
  --accent: #341cae;
  --accent-hover: #2a1691;
  --accent-soft: rgba(52, 28, 174, .14);
  --accent-text: #341cae;
  --on-accent: #fff;

  --bg: #ffffff;
  --sidebar: #f9f9f9;
  --surface: #f4f4f4;
  --surface-2: #ececec;
  --hover: rgba(0, 0, 0, .05);
  --hover-strong: rgba(0, 0, 0, .08);
  --text: #0d0d0d;
  --text-2: #3d3d3d;
  --muted: #6b6b6b;
  --border: rgba(0, 0, 0, .1);
  --border-strong: rgba(0, 0, 0, .15);
  --composer: #ffffff;
  --composer-shadow: 0 4px 16px rgba(0, 0, 0, .06), 0 0 0 1px rgba(0, 0, 0, .08);
  --popover: #ffffff;
  --popover-shadow: 0 8px 30px rgba(0, 0, 0, .14), 0 0 0 1px rgba(0, 0, 0, .06);
  --code-bg: #f6f6f7;
  --code-head: #ececee;
  --danger: #d93838;
  --scrim: rgba(0, 0, 0, .45);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Roboto Mono", monospace;
  --sb-w: 260px;
  --thread-w: 768px;
  --radius: 14px;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --accent-soft: rgba(124, 102, 255, .18);
    --accent-text: #a597ff;
    --bg: #212121;
    --sidebar: #171717;
    --surface: #303030;
    --surface-2: #3a3a3a;
    --hover: rgba(255, 255, 255, .06);
    --hover-strong: rgba(255, 255, 255, .1);
    --text: #ececec;
    --text-2: #d0d0d0;
    --muted: #a4a4a4;
    --border: rgba(255, 255, 255, .1);
    --border-strong: rgba(255, 255, 255, .16);
    --composer: #303030;
    --composer-shadow: none;
    --popover: #353535;
    --popover-shadow: 0 10px 34px rgba(0, 0, 0, .45), 0 0 0 1px rgba(255, 255, 255, .08);
    --code-bg: #171717;
    --code-head: #2b2b2b;
    --danger: #ff6b6b;
    --scrim: rgba(0, 0, 0, .6);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --accent-soft: rgba(124, 102, 255, .18);
  --accent-text: #a597ff;
  --bg: #212121;
  --sidebar: #171717;
  --surface: #303030;
  --surface-2: #3a3a3a;
  --hover: rgba(255, 255, 255, .06);
  --hover-strong: rgba(255, 255, 255, .1);
  --text: #ececec;
  --text-2: #d0d0d0;
  --muted: #a4a4a4;
  --border: rgba(255, 255, 255, .1);
  --border-strong: rgba(255, 255, 255, .16);
  --composer: #303030;
  --composer-shadow: none;
  --popover: #353535;
  --popover-shadow: 0 10px 34px rgba(0, 0, 0, .45), 0 0 0 1px rgba(255, 255, 255, .08);
  --code-bg: #171717;
  --code-head: #2b2b2b;
  --danger: #ff6b6b;
  --scrim: rgba(0, 0, 0, .6);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.6 var(--font); -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent; overflow: hidden;
}
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
input, textarea { font: inherit; color: inherit; }
a { color: var(--accent-text); }
code { font-family: var(--mono); }
[hidden] { display: none !important; }
svg { display: block; }
[data-icon] { display: inline-flex; flex: none; }
[data-icon] svg { width: 20px; height: 20px; }
::selection { background: var(--accent-soft); }

/* ---------- botões base ---------- */
.icon-btn {
  width: 36px; height: 36px; border-radius: 10px; display: inline-grid; place-items: center;
  color: var(--muted); transition: background .15s, color .15s; flex: none;
}
.icon-btn:hover { background: var(--hover); color: var(--text); }
.btn-primary {
  width: 100%; padding: 12px 16px; border-radius: 999px; background: var(--accent); color: var(--on-accent);
  font-weight: 600; transition: background .15s;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: .5; }
.btn-secondary, .btn-danger {
  display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px; border-radius: 999px;
  border: 1px solid var(--border-strong); font-size: 14px; font-weight: 500;
}
.btn-secondary:hover { background: var(--hover); }
.btn-danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, transparent); }
.btn-danger:hover { background: color-mix(in srgb, var(--danger) 10%, transparent); }
.btn-secondary [data-icon] svg { width: 16px; height: 16px; }

/* ================= LOGIN ================= */
.login { height: 100%; display: grid; place-items: center; padding: 24px 16px; }
.login-card { width: 100%; max-width: 360px; text-align: center; display: grid; gap: 12px; }
.login-logo { width: 64px; height: 64px; border-radius: 18px; margin: 0 auto 8px; box-shadow: 0 8px 30px rgba(52, 28, 174, .35); }
.login-card h1 { margin: 0; font-size: 26px; font-weight: 600; letter-spacing: -.01em; }
.login-card p { margin: 0 0 12px; color: var(--muted); }
.login-card input {
  width: 100%; padding: 13px 18px; border-radius: 999px; border: 1px solid var(--border-strong);
  background: var(--bg); outline: none; font-size: 16px;
}
.login-card input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.login-error { color: var(--danger); font-size: 14px; }

/* ================= LAYOUT ================= */
.app { display: flex; height: 100%; height: 100dvh; }

/* ---------- sidebar ---------- */
.sidebar {
  width: var(--sb-w); flex: none; background: var(--sidebar); display: flex; flex-direction: column;
  padding: 8px; gap: 2px; transition: margin-left .22s ease, transform .22s ease; z-index: 30;
  padding-top: max(8px, env(safe-area-inset-top));
}
.sb-top { display: flex; align-items: center; justify-content: space-between; height: 44px; padding: 0 2px; }
.sb-top-actions { display: flex; gap: 2px; }
.sb-brand { position: relative; }
.brand-mark { width: 26px; height: 26px; border-radius: 7px; }
.sb-brand .brand-hover { position: absolute; inset: 0; display: none; place-items: center; }
@media (hover: hover) {
  .sb-brand:hover .brand-mark { display: none; }
  .sb-brand:hover .brand-hover { display: grid; }
}
.sb-item {
  display: flex; align-items: center; gap: 10px; width: 100%; padding: 8px 10px; border-radius: 10px;
  font-size: 14px; text-align: left; color: var(--text);
}
.sb-item:hover { background: var(--hover); }
.sb-item [data-icon] svg { width: 18px; height: 18px; }
.sb-new-big { margin-top: 6px; }
.sb-search {
  display: flex; align-items: center; gap: 8px; margin: 4px 0; padding: 7px 10px; border-radius: 10px;
  background: var(--hover); color: var(--muted);
}
.sb-search [data-icon] svg { width: 16px; height: 16px; }
.sb-search input { flex: 1; min-width: 0; border: 0; background: none; outline: none; font-size: 14px; color: var(--text); }

.sb-list { flex: 1; overflow-y: auto; margin: 10px -4px 0; padding: 0 4px 12px; scrollbar-width: thin; }
.sb-group { font-size: 12px; font-weight: 600; color: var(--muted); padding: 14px 10px 6px; }
.conv {
  position: relative; display: flex; align-items: center; border-radius: 10px; font-size: 14px;
}
.conv a {
  flex: 1; min-width: 0; padding: 8px 10px; color: var(--text); text-decoration: none;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  -webkit-mask-image: linear-gradient(to right, #000 85%, transparent);
          mask-image: linear-gradient(to right, #000 85%, transparent);
}
.conv:hover { background: var(--hover); }
.conv.active { background: var(--hover-strong); }
.conv.active::before {
  content: ""; position: absolute; left: 0; top: 9px; bottom: 9px; width: 3px; border-radius: 3px; background: var(--accent);
}
.conv .conv-more {
  width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; color: var(--muted); opacity: 0;
  margin-right: 4px;
}
.conv:hover .conv-more, .conv.active .conv-more, .conv .conv-more.open { opacity: 1; }
.conv .conv-more:hover { color: var(--text); }
.conv .conv-more svg { width: 18px; height: 18px; }
.conv input {
  flex: 1; min-width: 0; margin: 3px 4px; padding: 5px 8px; border-radius: 8px; border: 1px solid var(--accent);
  background: var(--bg); outline: none; font-size: 14px;
}
.sb-empty { color: var(--muted); font-size: 13px; padding: 16px 10px; }
.sb-bottom { border-top: 1px solid var(--border); padding-top: 6px; padding-bottom: env(safe-area-inset-bottom); }

.backdrop { display: none; }

body.sidebar-collapsed .sidebar { margin-left: calc(var(--sb-w) * -1); }

/* ---------- main ---------- */
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; position: relative; background: var(--bg); }
.topbar {
  height: 56px; flex: none; display: flex; align-items: center; gap: 4px; padding: 0 10px;
  margin-top: env(safe-area-inset-top);
}
.topbar-spacer { flex: 1; }
.model-btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 10px; border-radius: 10px; font-size: 17px;
}
.model-btn:hover { background: var(--hover); }
.model-btn-name { font-weight: 600; }
.model-btn-sub { color: var(--muted); }
.model-btn .chev svg { width: 16px; height: 16px; color: var(--muted); }

.only-mobile, .only-collapsed, .only-mobile-or-collapsed { display: none; }
body.sidebar-collapsed .only-collapsed, body.sidebar-collapsed .only-mobile-or-collapsed { display: inline-grid; }

/* ---------- thread ---------- */
.thread-scroll { flex: 1; overflow-y: auto; overscroll-behavior: contain; }
.thread { max-width: var(--thread-w); margin: 0 auto; padding: 8px 20px 40px; }
.main.is-empty .thread-scroll { display: none; }

.msg { margin: 0 0 28px; }
.msg-user { display: flex; flex-direction: column; align-items: flex-end; }
.bubble {
  max-width: min(85%, 560px); background: var(--surface); padding: 10px 18px; border-radius: 22px;
  white-space: pre-wrap; word-wrap: break-word; overflow-wrap: anywhere;
}
.msg-user .msg-actions { opacity: 0; }
.msg-user:hover .msg-actions { opacity: 1; }

.msg-assistant .content { overflow-wrap: anywhere; }
.msg-actions { display: flex; align-items: center; gap: 2px; margin-top: 6px; min-height: 32px; }
.msg-actions .icon-btn { width: 32px; height: 32px; border-radius: 8px; }
.msg-actions .icon-btn svg { width: 17px; height: 17px; }
.badge {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted);
  padding: 3px 10px 3px 8px; border-radius: 999px; margin-left: 6px; background: var(--accent-soft);
}
.badge b { color: var(--accent-text); font-weight: 600; }
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

.status {
  display: inline-flex; align-items: center; gap: 10px; color: var(--muted); font-size: 15px;
}
.status-dot {
  width: 12px; height: 12px; border-radius: 50%; background: var(--text); animation: pulse 1.1s ease-in-out infinite;
}
.status-text {
  background: linear-gradient(90deg, var(--muted) 0%, var(--text) 50%, var(--muted) 100%);
  background-size: 200% 100%; -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shimmer 1.6s linear infinite;
}
@keyframes pulse { 0%, 100% { transform: scale(.75); opacity: .6; } 50% { transform: scale(1); opacity: 1; } }
@keyframes shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }
.cursor::after {
  content: ""; display: inline-block; width: 10px; height: 10px; margin-left: 4px; border-radius: 50%;
  background: var(--text); vertical-align: middle; animation: pulse 1s ease-in-out infinite;
}

.error-box {
  border: 1px solid color-mix(in srgb, var(--danger) 45%, transparent);
  background: color-mix(in srgb, var(--danger) 8%, transparent);
  color: var(--text); border-radius: 12px; padding: 12px 14px; font-size: 14px;
}
.error-box button { margin-top: 10px; }

/* ---------- markdown ---------- */
.content > :first-child { margin-top: 0; }
.content > :last-child { margin-bottom: 0; }
.content p { margin: 0 0 14px; }
.content h1, .content h2, .content h3, .content h4 { line-height: 1.3; margin: 24px 0 10px; font-weight: 600; }
.content h1 { font-size: 1.6em; } .content h2 { font-size: 1.35em; } .content h3 { font-size: 1.15em; } .content h4 { font-size: 1em; }
.content ul, .content ol { margin: 0 0 14px; padding-left: 26px; }
.content li { margin: 4px 0; }
.content li > p { margin: 0 0 6px; }
.content blockquote { margin: 0 0 14px; padding: 2px 0 2px 16px; border-left: 3px solid var(--accent); color: var(--text-2); }
.content hr { border: 0; border-top: 1px solid var(--border); margin: 24px 0; }
.content strong { font-weight: 600; }
.content :not(pre) > code {
  background: var(--surface); padding: 2px 6px; border-radius: 6px; font-size: .875em;
}
.content table { border-collapse: collapse; width: 100%; font-size: 14px; display: block; overflow-x: auto; margin: 0 0 14px; }
.content th, .content td { border-bottom: 1px solid var(--border); padding: 8px 12px; text-align: left; vertical-align: top; }
.content th { font-weight: 600; border-bottom-color: var(--border-strong); }
.content img { max-width: 100%; border-radius: 12px; }

.codeblock { margin: 0 0 16px; border-radius: 12px; overflow: hidden; background: var(--code-bg); border: 1px solid var(--border); }
.code-head {
  display: flex; align-items: center; gap: 4px; padding: 4px 6px 4px 14px; background: var(--code-head);
  font-size: 12px; color: var(--muted); font-family: var(--font);
}
.code-head .lang { flex: 1; }
.code-head button {
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 9px; border-radius: 7px; font-size: 12px; color: var(--muted);
}
.code-head button:hover { background: var(--hover-strong); color: var(--text); }
.code-head button svg { width: 14px; height: 14px; }
.code-head button.run { color: var(--on-accent); background: var(--accent); }
.code-head button.run:hover { background: var(--accent-hover); color: var(--on-accent); }
.codeblock pre { margin: 0; padding: 14px 16px; overflow-x: auto; font-size: 13.5px; line-height: 1.55; }
.codeblock pre code { font-family: var(--mono); white-space: pre; }

/* realce de sintaxe */
.hljs-keyword, .hljs-selector-tag, .hljs-built_in, .hljs-name, .hljs-tag { color: #a626a4; }
.hljs-string, .hljs-attr-value, .hljs-template-variable, .hljs-addition { color: #50a14f; }
.hljs-number, .hljs-literal, .hljs-symbol, .hljs-bullet { color: #b76b01; }
.hljs-comment, .hljs-quote, .hljs-meta { color: #8a8f98; font-style: italic; }
.hljs-title, .hljs-section, .hljs-function .hljs-title, .hljs-title.function_ { color: #4078f2; }
.hljs-attr, .hljs-attribute, .hljs-variable, .hljs-property, .hljs-selector-class, .hljs-selector-id { color: #c18401; }
.hljs-type, .hljs-title.class_ { color: #c18401; }
.hljs-deletion { color: #e45649; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .hljs-keyword, :root:not([data-theme="light"]) .hljs-selector-tag, :root:not([data-theme="light"]) .hljs-built_in, :root:not([data-theme="light"]) .hljs-name, :root:not([data-theme="light"]) .hljs-tag { color: #c678dd; }
  :root:not([data-theme="light"]) .hljs-string, :root:not([data-theme="light"]) .hljs-addition { color: #98c379; }
  :root:not([data-theme="light"]) .hljs-number, :root:not([data-theme="light"]) .hljs-literal { color: #d19a66; }
  :root:not([data-theme="light"]) .hljs-title, :root:not([data-theme="light"]) .hljs-title.function_ { color: #61afef; }
  :root:not([data-theme="light"]) .hljs-attr, :root:not([data-theme="light"]) .hljs-attribute, :root:not([data-theme="light"]) .hljs-variable, :root:not([data-theme="light"]) .hljs-property, :root:not([data-theme="light"]) .hljs-type { color: #e5c07b; }
}
:root[data-theme="dark"] .hljs-keyword, :root[data-theme="dark"] .hljs-selector-tag, :root[data-theme="dark"] .hljs-built_in, :root[data-theme="dark"] .hljs-name, :root[data-theme="dark"] .hljs-tag { color: #c678dd; }
:root[data-theme="dark"] .hljs-string, :root[data-theme="dark"] .hljs-addition { color: #98c379; }
:root[data-theme="dark"] .hljs-number, :root[data-theme="dark"] .hljs-literal { color: #d19a66; }
:root[data-theme="dark"] .hljs-title, :root[data-theme="dark"] .hljs-title.function_ { color: #61afef; }
:root[data-theme="dark"] .hljs-attr, :root[data-theme="dark"] .hljs-attribute, :root[data-theme="dark"] .hljs-variable, :root[data-theme="dark"] .hljs-property, :root[data-theme="dark"] .hljs-type { color: #e5c07b; }

/* ---------- imagens geradas ---------- */
.gen-image { position: relative; display: inline-block; max-width: min(100%, 512px); }
.gen-image img {
  display: block; width: 100%; border-radius: 16px; cursor: zoom-in; background: var(--surface);
}
.gen-image .img-dl {
  position: absolute; top: 10px; right: 10px; background: rgba(0, 0, 0, .55); color: #fff; opacity: 0;
  transition: opacity .15s;
}
.gen-image:hover .img-dl { opacity: 1; }
.img-caption { font-size: 13px; color: var(--muted); margin-top: 8px; max-width: 512px; }
.img-loading {
  width: min(100%, 400px); aspect-ratio: 1; border-radius: 16px; background: var(--surface);
  position: relative; overflow: hidden;
}
.img-loading::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(110deg, transparent 30%, var(--accent-soft) 50%, transparent 70%);
  background-size: 200% 100%; animation: shimmer 1.4s linear infinite;
}

/* ---------- empty state ---------- */
.empty { display: none; }
.main.is-empty .empty {
  display: flex; flex: 1; align-items: flex-end; justify-content: center; padding: 0 20px 28px;
}
.empty h1 { margin: 0; font-size: 28px; font-weight: 500; letter-spacing: -.01em; text-align: center; }

/* ---------- composer ---------- */
.composer-wrap {
  position: relative; width: 100%; max-width: calc(var(--thread-w) + 40px); margin: 0 auto;
  padding: 0 20px calc(8px + env(safe-area-inset-bottom));
}
.main.is-empty .composer-wrap { flex: 1; padding-bottom: 24px; }
.composer {
  background: var(--composer); border-radius: 28px; box-shadow: var(--composer-shadow);
  padding: 10px 10px 10px 18px; display: flex; flex-direction: column; gap: 4px;
  border: 1px solid transparent; transition: border-color .15s;
}
.composer:focus-within { border-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.composer textarea {
  width: 100%; resize: none; border: 0; outline: none; background: none; padding: 6px 0 2px;
  max-height: 40vh; min-height: 28px; font-size: 16px; line-height: 1.5;
}
.composer textarea::placeholder { color: var(--muted); }
.composer-row { display: flex; align-items: center; gap: 6px; margin-left: -8px; }
.composer-spacer { flex: 1; }
.chip-btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px 6px 10px; border-radius: 999px;
  font-size: 14px; color: var(--muted); border: 1px solid var(--border);
}
.chip-btn:hover { background: var(--hover); color: var(--text); }
.chip-btn svg { width: 16px; height: 16px; }
.chip-btn.auto [data-icon] { color: var(--accent-text); }
.send-btn {
  width: 36px; height: 36px; border-radius: 50%; background: var(--accent); color: #fff;
  display: grid; place-items: center; transition: background .15s, opacity .15s;
}
.send-btn:hover { background: var(--accent-hover); }
.send-btn:disabled { opacity: .35; cursor: default; }
.send-btn svg { width: 20px; height: 20px; }
.send-btn.stop svg { width: 14px; height: 14px; }

.suggestions { display: none; }
.main.is-empty .suggestions { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 16px; }
.suggestions button {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px;
  border: 1px solid var(--border); font-size: 14px; color: var(--text-2);
}
.suggestions button:hover { background: var(--hover); }
.suggestions svg { width: 16px; height: 16px; color: var(--accent-text); }

.disclaimer { text-align: center; font-size: 12px; color: var(--muted); margin: 8px 0 0; }
.main.is-empty .disclaimer { visibility: hidden; }

.scroll-down {
  position: absolute; top: -48px; left: 50%; transform: translateX(-50%); width: 34px; height: 34px;
  border-radius: 50%; display: grid; place-items: center; background: var(--bg); border: 1px solid var(--border-strong);
  box-shadow: 0 2px 8px rgba(0, 0, 0, .1); color: var(--text);
}
.scroll-down svg { width: 18px; height: 18px; }

/* ================= ANEXOS ================= */
.attach-btn { width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--border); color: var(--text-2); }
.attach-btn:hover { color: var(--text); }

.att-tray { display: flex; gap: 8px; overflow-x: auto; padding: 4px 0 8px; margin-left: -8px; scrollbar-width: thin; }
.att {
  position: relative; flex: none; border-radius: 14px; background: var(--hover); border: 1px solid var(--border);
  display: flex; align-items: center; gap: 10px; height: 56px; max-width: 240px; padding: 0 30px 0 8px;
}
.att.is-image { width: 56px; padding: 0; overflow: hidden; }
.att.is-image img { width: 100%; height: 100%; object-fit: cover; }
.att-ico { width: 38px; height: 38px; border-radius: 9px; display: grid; place-items: center; color: #fff; flex: none; background: #6b7280; }
.att-ico svg { width: 20px; height: 20px; }
.att-ico.pdf { background: #e5484d; }
.att-ico.doc { background: #2f6fed; }
.att-ico.sheet { background: #1f9d55; }
.att-ico.code { background: #7c5cff; }
.att-meta { min-width: 0; display: flex; flex-direction: column; line-height: 1.25; }
.att-name { font-size: 13px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.att-type { font-size: 12px; color: var(--muted); }
.att-x {
  position: absolute; top: 4px; right: 4px; width: 20px; height: 20px; border-radius: 50%;
  background: var(--text); color: var(--bg); display: grid; place-items: center; opacity: .85;
}
.att-x svg { width: 12px; height: 12px; stroke-width: 2.6; }
.att-x:hover { opacity: 1; }
.att-busy::after {
  content: ""; position: absolute; inset: 0; background: color-mix(in srgb, var(--bg) 55%, transparent);
}
.att-busy::before {
  content: ""; position: absolute; z-index: 1; width: 20px; height: 20px; left: calc(50% - 10px); top: calc(50% - 10px);
  border-radius: 50%; border: 2.5px solid var(--accent-soft); border-top-color: var(--accent-text); animation: spin .8s linear infinite;
}
.att.is-image.att-busy::before { left: calc(50% - 10px); }
.att:not(.is-image).att-busy::before { left: 17px; }
.att-error { border-color: var(--danger); }
.att-error .att-type { color: var(--danger); }
@keyframes spin { to { transform: rotate(360deg); } }

.msg-atts { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; margin-bottom: 8px; max-width: min(85%, 560px); }
.msg-atts-row { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.msg-atts .thumb {
  width: 160px; max-width: 100%; aspect-ratio: 1; border-radius: 16px; overflow: hidden; cursor: zoom-in; background: var(--surface);
}
.msg-atts .thumb.single { width: 260px; aspect-ratio: auto; max-height: 340px; }
.msg-atts .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.msg-atts a.att { text-decoration: none; color: var(--text); padding-right: 14px; }
.msg-atts a.att:hover { background: var(--hover-strong); }

.drop-overlay {
  position: fixed; inset: 0; z-index: 90; background: color-mix(in srgb, var(--accent) 22%, var(--scrim));
  display: grid; place-items: center; padding: 20px; pointer-events: none; animation: pop .12s ease-out;
}
.drop-card {
  display: flex; flex-direction: column; align-items: center; gap: 6px; text-align: center; color: var(--text);
  background: var(--popover); padding: 32px 40px; border-radius: 24px; border: 2px dashed var(--accent-text);
  box-shadow: var(--popover-shadow);
}
.drop-card [data-icon] svg { width: 40px; height: 40px; color: var(--accent-text); margin-bottom: 6px; }
.drop-card strong { font-size: 18px; }
.drop-card span:last-child { color: var(--muted); font-size: 14px; }

/* ================= POPOVERS ================= */
.popover {
  position: fixed; z-index: 60; min-width: 280px; max-width: calc(100vw - 24px); max-height: 70vh; overflow-y: auto;
  background: var(--popover); border-radius: 16px; box-shadow: var(--popover-shadow); padding: 6px;
  animation: pop .12s ease-out;
}
.popover-sm { min-width: 170px; }
@keyframes pop { from { opacity: 0; transform: translateY(-4px) scale(.98); } }
.popover button {
  display: flex; align-items: center; gap: 10px; width: 100%; padding: 9px 10px; border-radius: 10px; text-align: left; font-size: 14px;
}
.popover button:hover { background: var(--hover); }
.popover button.danger { color: var(--danger); }
.popover button svg { width: 18px; height: 18px; }
.pm-group { font-size: 12px; font-weight: 600; color: var(--muted); padding: 10px 10px 4px; }
.pm-item .pm-text { flex: 1; min-width: 0; display: flex; flex-direction: column; line-height: 1.3; }
.pm-item .pm-note { font-size: 12px; color: var(--muted); }
.pm-item .pm-check { color: var(--accent-text); visibility: hidden; }
.pm-item.on .pm-check { visibility: visible; }
.pm-item .pm-ico { width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; background: var(--hover); flex: none; }
.pm-item .pm-ico svg { width: 16px; height: 16px; }
.pm-item.auto .pm-ico { background: var(--accent); color: #fff; }
.pm-sep { height: 1px; background: var(--border); margin: 6px 4px; }

/* ================= MODAIS ================= */
.modal { position: fixed; inset: 0; z-index: 80; }
.preview { background: var(--bg); display: flex; flex-direction: column; }
.preview-bar {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px 8px 16px; border-bottom: 1px solid var(--border);
  padding-top: max(8px, env(safe-area-inset-top));
}
.preview-stage { flex: 1; display: flex; justify-content: center; background: var(--sidebar); overflow: auto; }
.preview-stage iframe { width: 100%; height: 100%; border: 0; background: #fff; transition: width .2s; }
.preview-stage.mobile iframe { width: 390px; max-width: 100%; border-left: 1px solid var(--border); border-right: 1px solid var(--border); }

.seg { display: inline-flex; background: var(--hover); border-radius: 10px; padding: 3px; gap: 2px; }
.seg button { padding: 5px 10px; border-radius: 8px; color: var(--muted); font-size: 14px; display: inline-grid; place-items: center; }
.seg button svg { width: 16px; height: 16px; }
.seg button.on { background: var(--bg); color: var(--text); box-shadow: 0 1px 3px rgba(0, 0, 0, .12); }
.seg-wide { display: flex; }
.seg-wide button { flex: 1; }

.lightbox { background: rgba(0, 0, 0, .9); display: grid; place-items: center; padding: 20px; }
.lightbox img { max-width: 100%; max-height: 100%; border-radius: 8px; object-fit: contain; }
.lightbox-bar { position: absolute; top: max(12px, env(safe-area-inset-top)); right: 12px; display: flex; gap: 6px; }
.lightbox-bar .icon-btn { color: #fff; background: rgba(255, 255, 255, .12); }

.dialog-wrap { background: var(--scrim); display: grid; place-items: center; padding: 16px; }
.dialog {
  width: 100%; max-width: 560px; max-height: 88vh; display: flex; flex-direction: column;
  background: var(--popover); border-radius: 20px; box-shadow: var(--popover-shadow);
}
.dialog-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 16px 8px 24px; }
.dialog-head h2 { margin: 0; font-size: 18px; font-weight: 600; }
.dialog-body { overflow-y: auto; padding: 0 24px 24px; }
.dialog section { padding: 16px 0; border-bottom: 1px solid var(--border); }
.dialog section:last-child { border-bottom: 0; }
.dialog h3 { margin: 0 0 8px; font-size: 14px; font-weight: 600; }
.muted { color: var(--muted); font-size: 13px; margin: 0 0 10px; }
.route-table { display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; font-size: 14px; }
.route-table .r { color: var(--muted); }
.route-table .none { color: var(--danger); }
.pass-form { display: grid; gap: 8px; }
.pass-form input {
  padding: 10px 14px; border-radius: 10px; border: 1px solid var(--border-strong); background: var(--bg); outline: none;
}
.pass-form input:focus { border-color: var(--accent); }
.pass-form .btn-secondary { justify-self: start; }
.row-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; }
#diag-out { margin-top: 12px; font-size: 13px; display: grid; gap: 10px; }
.diag-prov { border: 1px solid var(--border); border-radius: 12px; padding: 10px 12px; }
.diag-prov b { display: block; margin-bottom: 4px; }
.diag-ok { color: #2f9e6b; } .diag-bad { color: var(--danger); } .diag-off { color: var(--muted); }

.toast {
  position: fixed; left: 50%; bottom: calc(110px + env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: 100;
  background: var(--text); color: var(--bg); padding: 9px 16px; border-radius: 999px; font-size: 14px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .25); animation: pop .15s ease-out;
}

/* ================= MOBILE ================= */
@media (max-width: 820px) {
  .sidebar {
    position: fixed; inset: 0 auto 0 0; width: min(86vw, 300px); transform: translateX(-100%);
    box-shadow: 8px 0 30px rgba(0, 0, 0, .25); margin-left: 0 !important;
  }
  body.sidebar-open .sidebar { transform: none; }
  body.sidebar-open .backdrop { display: block; position: fixed; inset: 0; background: var(--scrim); z-index: 25; }
  .only-mobile, .only-mobile-or-collapsed { display: inline-grid; }
  .only-collapsed { display: none !important; }
  .sb-brand { pointer-events: none; }
  .topbar { padding: 0 6px; }
  .model-btn { font-size: 16px; }
  .thread { padding: 4px 16px 32px; }
  .composer-wrap { padding-left: 12px; padding-right: 12px; }
  .main.is-empty .empty { align-items: center; padding-bottom: 0; }
  .main.is-empty .composer-wrap { flex: none; }
  .main.is-empty .suggestions { margin-bottom: 8px; }
  .empty h1 { font-size: 24px; }
  .bubble { max-width: 88%; }
  .conv .conv-more { opacity: 1; }
  .msg-user .msg-actions { opacity: 1; }
  .gen-image .img-dl { opacity: 1; }
  .popover { min-width: 0; width: calc(100vw - 24px); }
  .preview-bar strong { display: none; }
}

/* ================= v2: projetos, versões, voz, pesquisa, gastos ================= */
.sb-scroll { flex: 1; overflow-y: auto; margin: 6px -4px 0; padding: 0 4px 12px; scrollbar-width: thin; }
.sb-list { flex: none; overflow: visible; margin: 0; padding: 0; }
.sb-section { margin-bottom: 4px; }
.sb-section-head {
  display: flex; align-items: center; justify-content: space-between; padding: 12px 4px 4px 10px;
  font-size: 12px; font-weight: 600; color: var(--muted);
}
.icon-btn.sm { width: 26px; height: 26px; border-radius: 8px; }
.icon-btn.sm svg { width: 16px; height: 16px; }
.proj {
  display: flex; align-items: center; gap: 10px; width: 100%; padding: 7px 10px; border-radius: 10px;
  font-size: 14px; text-align: left; color: var(--text); position: relative;
}
.proj:hover { background: var(--hover); }
.proj.active { background: var(--hover-strong); }
.proj.active::before { content: ""; position: absolute; left: 0; top: 8px; bottom: 8px; width: 3px; border-radius: 3px; background: var(--accent); }
.proj .t { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.proj-ico { color: var(--accent-text); display: inline-flex; }
.proj-ico svg { width: 18px; height: 18px; }
.proj-empty { color: var(--muted); }
.proj-empty .proj-ico { color: var(--muted); }
.conv a { display: flex; align-items: center; gap: 6px; }
.conv a .t { min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.pin-ico { display: inline-flex; color: var(--accent-text); flex: none; }
.pin-ico svg { width: 14px; height: 14px; }

/* topo */
.crumb {
  display: inline-flex; align-items: center; gap: 6px; max-width: 40vw; padding: 5px 10px; border-radius: 999px;
  font-size: 13px; color: var(--accent-text); background: var(--accent-soft); margin-left: 4px;
}
.crumb svg { width: 15px; height: 15px; }
.crumb span:last-child { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* composer */
.chip-btn.on { background: var(--accent-soft); color: var(--accent-text); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.mic-btn { width: 36px; height: 36px; border-radius: 50%; }
.mic-btn.rec { background: #e5484d; color: #fff; animation: recpulse 1.4s ease-in-out infinite; }
.mic-btn.busy { opacity: .5; pointer-events: none; }
@keyframes recpulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(229, 72, 77, .45); } 50% { box-shadow: 0 0 0 8px rgba(229, 72, 77, 0); } }

/* versões e ações */
.ver { display: inline-flex; align-items: center; gap: 0; margin: 0 2px; color: var(--muted); font-size: 13px; }
.ver .icon-btn { width: 26px; height: 28px; }
.ver .icon-btn svg { width: 16px; height: 16px; }
.ver .icon-btn:disabled { opacity: .3; cursor: default; background: none; }
.ver-n { min-width: 28px; text-align: center; font-variant-numeric: tabular-nums; }
.speak-btn.on { color: var(--accent-text); background: var(--accent-soft); }

/* edição */
.edit-box {
  width: min(100%, 680px); background: var(--surface); border-radius: 20px; padding: 12px 14px;
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
}
.edit-box textarea {
  width: 100%; border: 0; outline: none; background: none; resize: none; font-size: 16px; line-height: 1.5; color: var(--text);
}
.edit-row { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; }
.btn-primary-sm {
  display: inline-flex; align-items: center; gap: 6px; padding: 9px 18px; border-radius: 999px;
  background: var(--accent); color: #fff; font-size: 14px; font-weight: 600;
}
.btn-primary-sm:hover { background: var(--accent-hover); }

/* fontes */
.msg-extras:empty { display: none; }
.sources { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 10px; }
.src-label { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; color: var(--muted); margin-right: 2px; }
.src-label svg { width: 14px; height: 14px; }
.src {
  display: inline-flex; align-items: center; gap: 6px; max-width: 220px; padding: 4px 10px 4px 6px; border-radius: 999px;
  background: var(--hover); border: 1px solid var(--border); font-size: 12px; color: var(--text-2); text-decoration: none;
}
.src:hover { background: var(--hover-strong); color: var(--text); }
.src img { width: 16px; height: 16px; border-radius: 4px; flex: none; }
.src span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.src.extra { display: none; }
.sources.all .src.extra { display: inline-flex; }
.src-more { cursor: pointer; padding: 4px 10px; }

/* fórmulas */
.content .katex-display { overflow-x: auto; overflow-y: hidden; padding: 4px 0; margin: 0 0 14px; }
.content .katex { font-size: 1.08em; }

/* página de projeto */
.main.is-project .thread { display: none; }
.project-view { max-width: var(--thread-w); margin: 0 auto; padding: 24px 20px 40px; }
.pv-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.pv-head h1 { margin: 0; font-size: 26px; font-weight: 600; flex: 1; min-width: 0; overflow-wrap: anywhere; }
.pv-ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--accent); color: #fff; flex: none; }
.pv-ico svg { width: 22px; height: 22px; }
.pv-info { margin: 18px 0 8px; padding: 14px 16px; border: 1px solid var(--border); border-radius: 16px; }
.pv-instr { white-space: pre-wrap; font-size: 14px; color: var(--text-2); display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.pv-instr.muted { margin: 0; }
.pv-files { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.pv-files a.att, .pm-files .att { text-decoration: none; color: var(--text); padding-right: 30px; }
.pv-files a.att { padding-right: 14px; }
.pv-sub { font-size: 13px; font-weight: 600; color: var(--muted); margin: 26px 0 6px; }
.pv-list { display: flex; flex-direction: column; }
.pv-row { display: flex; align-items: center; border-bottom: 1px solid var(--border); }
.pv-row a { flex: 1; min-width: 0; display: flex; align-items: center; gap: 8px; padding: 14px 4px; color: var(--text); text-decoration: none; }
.pv-row a .t { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pv-row a .d { font-size: 12px; color: var(--muted); flex: none; }
.pv-row:hover { background: var(--hover); }
.pv-row .conv-more { width: 32px; height: 32px; border-radius: 8px; display: grid; place-items: center; color: var(--muted); }
.pv-row .conv-more svg { width: 18px; height: 18px; }
.pv-empty { padding: 16px 4px; }
.pm-files { display: flex; flex-wrap: wrap; gap: 8px; }

/* diálogos e configurações */
.dialog input[type="text"], .dialog textarea, .dialog select {
  width: 100%; padding: 10px 14px; border-radius: 12px; border: 1px solid var(--border-strong);
  background: var(--bg); color: var(--text); outline: none; font-size: 15px; resize: vertical;
}
.dialog input[type="text"]:focus, .dialog textarea:focus, .dialog select:focus { border-color: var(--accent); }
.dialog-lg { max-width: 760px; height: min(640px, 88vh); }
.settings-layout { flex: 1; min-height: 0; display: flex; }
.settings-tabs { flex: none; width: 190px; padding: 4px 8px 16px 16px; display: flex; flex-direction: column; gap: 2px; }
.settings-tabs button {
  display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 10px; font-size: 14px; color: var(--text-2); text-align: left;
}
.settings-tabs button svg { width: 18px; height: 18px; }
.settings-tabs button:hover { background: var(--hover); }
.settings-tabs button.on { background: var(--hover-strong); color: var(--text); font-weight: 500; }
.settings-panels { flex: 1; min-width: 0; padding-left: 12px; }
.field-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 10px 0; font-size: 14px; }
.field-row select { width: auto; max-width: 62%; padding: 8px 12px; font-size: 14px; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.row-between h3 { margin: 0; }
.row-end { display: flex; align-items: center; justify-content: flex-end; gap: 10px; margin-top: 10px; }
.muted.small { font-size: 12px; margin-top: 16px; }
.switch { position: relative; width: 42px; height: 24px; flex: none; }
.switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.switch span { position: absolute; inset: 0; background: var(--surface-2); border-radius: 999px; transition: background .15s; cursor: pointer; }
.switch span::after { content: ""; position: absolute; width: 18px; height: 18px; left: 3px; top: 3px; border-radius: 50%; background: #fff; transition: transform .15s; box-shadow: 0 1px 3px rgba(0,0,0,.3); }
.switch input:checked + span { background: var(--accent); }
.switch input:checked + span::after { transform: translateX(18px); }
.mem-list { display: flex; flex-direction: column; gap: 6px; margin: 10px 0; }
.mem { display: flex; align-items: center; gap: 10px; padding: 8px 6px 8px 12px; border: 1px solid var(--border); border-radius: 12px; font-size: 14px; }
.mem-ico { color: var(--accent-text); display: inline-flex; flex: none; }
.mem-ico svg { width: 16px; height: 16px; }
.mem-t { flex: 1; min-width: 0; }
.mem .icon-btn { width: 30px; height: 30px; }
.mem .icon-btn svg { width: 16px; height: 16px; }
.mem-add { display: flex; gap: 8px; }
.mem-add input { flex: 1; }

/* gastos */
.usage-head { display: flex; align-items: center; justify-content: center; gap: 10px; padding: 8px 0 14px; }
.usage-head strong { min-width: 160px; text-align: center; font-size: 16px; }
.usage-head .icon-btn:disabled { opacity: .3; }
.u-cards { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 10px; }
.u-card { border: 1px solid var(--border); border-radius: 14px; padding: 12px 14px; display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.u-card span { font-size: 12px; color: var(--muted); }
.u-card strong { font-size: 20px; font-weight: 600; font-variant-numeric: tabular-nums; }
.u-card em { font-style: normal; font-size: 12px; color: var(--muted); }
.u-card.big { background: var(--accent); border-color: var(--accent); }
.u-card.big span, .u-card.big em { color: rgba(255,255,255,.75); }
.u-card.big strong { color: #fff; font-size: 24px; }
#usage-body h3 { margin: 22px 0 10px; font-size: 13px; font-weight: 600; color: var(--muted); }
.u-bars { display: flex; flex-direction: column; gap: 8px; }
.u-bar { display: grid; grid-template-columns: 70px 1fr auto; align-items: center; gap: 10px; font-size: 13px; }
.u-track { height: 10px; border-radius: 999px; background: var(--hover); overflow: hidden; }
.u-fill { display: block; height: 100%; border-radius: 999px; background: var(--accent); }
.u-fill.gemini { background: color-mix(in srgb, var(--accent) 65%, #4aa3ff); }
.u-fill.anthropic { background: color-mix(in srgb, var(--accent) 55%, #e07a5f); }
.u-val { font-variant-numeric: tabular-nums; color: var(--text-2); }
.u-days { display: flex; align-items: flex-end; gap: 2px; height: 90px; padding: 0 2px; border-bottom: 1px solid var(--border); }
.u-day { flex: 1; height: 100%; display: flex; align-items: flex-end; }
.u-day span { display: block; width: 100%; background: var(--accent); border-radius: 3px 3px 0 0; opacity: .85; }
.u-day:hover span { opacity: 1; }
.u-days-axis { display: flex; justify-content: space-between; font-size: 11px; color: var(--muted); padding: 4px 2px 0; }
.u-table { display: flex; flex-direction: column; font-size: 13px; }
.u-tr { display: grid; grid-template-columns: 1fr 60px 90px 90px; gap: 8px; padding: 8px 2px; border-bottom: 1px solid var(--border); font-variant-numeric: tabular-nums; }
.u-tr span:not(:first-child) { text-align: right; }
.u-tr.two { grid-template-columns: 1fr auto; }
.u-th { color: var(--muted); font-size: 12px; }

@media (max-width: 820px) {
  .crumb { max-width: 34vw; }
  .chip-btn .chip-label { display: none; }
  .chip-btn { padding: 6px 10px; }
  .dialog-wrap { padding: 0; place-items: end center; }
  .dialog { max-height: 92vh; border-radius: 20px 20px 0 0; }
  .dialog-lg { height: 92vh; }
  .settings-layout { flex-direction: column; }
  .settings-tabs { width: auto; flex-direction: row; overflow-x: auto; padding: 0 12px 8px; gap: 4px; scrollbar-width: none; }
  .settings-tabs button { flex: none; padding: 8px 12px; }
  .settings-panels { padding-left: 24px; }
  .field-row { flex-direction: column; align-items: stretch; gap: 6px; }
  .field-row select { max-width: none; width: 100%; }
  .u-cards { grid-template-columns: 1fr 1fr; }
  .u-card.big { grid-column: 1 / -1; }
  .u-tr { grid-template-columns: 1fr 44px 70px 76px; }
  .project-view { padding: 12px 16px 32px; }
  .pv-head h1 { font-size: 22px; }
}
.btn-secondary svg, .btn-danger svg { width: 16px; height: 16px; flex: none; }
.msg-user .msg-actions:has(.ver) { opacity: 1; }
.dialog { min-width: 0; }
.dialog-wrap { grid-template-columns: minmax(0, 1fr); justify-items: center; }
@media (max-width: 820px) {
  .dialog, .dialog-lg { width: 100%; max-width: 100vw; }
  .settings-panels { padding: 0 16px 24px; }
  .settings-tabs { padding: 0 12px 8px; }
  .dialog-head { padding: 14px 12px 6px 18px; }
  .pv-head .btn-secondary { padding: 7px 12px; }
}