:root {
  --bg: #000;
  --fg: #fff;
  --fg2: #9a9a9a;
  --line: #222;
  --hover: #0e0e0e;
  --card: #0a0a0a;
  --btn-bg: #fff;
  --btn-fg: #000;
  --logo-filter: none;
  --shadow: rgba(255, 255, 255, 0.08);
  --font: 'Poppins', system-ui, -apple-system, 'Segoe UI', sans-serif;
}
:root[data-theme='light'] {
  --bg: #fff;
  --fg: #000;
  --fg2: #6b6b6b;
  --line: #e4e4e4;
  --hover: #f5f5f5;
  --card: #fafafa;
  --btn-bg: #000;
  --btn-fg: #fff;
  --logo-filter: invert(1);
  --shadow: rgba(0, 0, 0, 0.1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
  transition: background 0.2s, color 0.2s;
}
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }
img { display: block; max-width: 100%; }
:focus-visible { outline: 2px solid var(--fg); outline-offset: 2px; }

.logo-img { filter: var(--logo-filter); height: 30px; width: auto; }
.symbol-img { filter: var(--logo-filter); height: 34px; width: auto; }

/* ---------- botões ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 999px; padding: 10px 22px; font-weight: 600; font-size: 14px;
  background: var(--btn-bg); color: var(--btn-fg); border: 1.5px solid var(--btn-bg);
  transition: opacity 0.15s, transform 0.1s;
  white-space: nowrap;
}
.btn:hover { opacity: 0.86; text-decoration: none; }
.btn:active { transform: scale(0.98); }
.btn[disabled] { opacity: 0.4; cursor: not-allowed; }
.btn.ghost { background: transparent; color: var(--fg); border-color: var(--line); }
.btn.ghost:hover { background: var(--hover); opacity: 1; border-color: var(--fg2); }
.btn.sm { padding: 6px 16px; font-size: 13px; }
.btn.lg { padding: 14px 34px; font-size: 16px; }
.btn.block { width: 100%; }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--line); color: var(--fg);
}
.icon-btn:hover { background: var(--hover); }
.icon-btn svg { width: 18px; height: 18px; }
.pill-toggle {
  display: inline-flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; height: 38px;
}
.pill-toggle button { padding: 0 12px; font-size: 12px; font-weight: 600; color: var(--fg2); }
.pill-toggle button.on { background: var(--fg); color: var(--bg); }
.toggles { display: flex; gap: 8px; align-items: center; }

/* ---------- público (landing / auth) ---------- */
.pub { min-height: 100vh; display: flex; flex-direction: column; }
.pub-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 28px; gap: 12px;
}
.pub-head .pub-actions { display: flex; gap: 10px; align-items: center; }
.pub-main { flex: 1; display: flex; align-items: center; justify-content: center; padding: 24px; }
.hero { text-align: center; max-width: 760px; }
.hero h1 {
  font-size: clamp(32px, 6vw, 58px); font-weight: 500; line-height: 1.18; letter-spacing: -0.02em;
}
.hero p { color: var(--fg2); margin-top: 18px; font-size: 16px; }
.hero .cta { margin-top: 38px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.pub-foot { padding: 20px; text-align: center; color: var(--fg2); font-size: 12px; }

.auth-card {
  width: 100%; max-width: 400px; border: 1px solid var(--line); border-radius: 20px;
  padding: 32px 28px; background: var(--card);
}
.auth-card h2 { font-size: 24px; font-weight: 600; margin-bottom: 4px; }
.auth-card .sub { color: var(--fg2); margin-bottom: 22px; font-size: 14px; }
.auth-card .alt { margin-top: 18px; text-align: center; color: var(--fg2); font-size: 14px; }
.auth-card .alt a { color: var(--fg); font-weight: 600; }

/* ---------- formulários ---------- */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 6px; }
.field input, .field textarea {
  width: 100%; background: var(--bg); border: 1px solid var(--line); border-radius: 12px;
  padding: 11px 14px; outline: none; transition: border-color 0.15s;
}
.field input:focus, .field textarea:focus { border-color: var(--fg); }
.field textarea { resize: vertical; min-height: 84px; }
.field .hint { font-size: 12px; color: var(--fg2); margin-top: 5px; min-height: 18px; }
.field .hint.ok { color: var(--fg); }
.field .hint.bad { color: var(--fg); font-weight: 600; }
.prefix-wrap { position: relative; }
.prefix-wrap span { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--fg2); }
.prefix-wrap input { padding-left: 30px; }
.form-error {
  border: 1px solid var(--fg); border-radius: 12px; padding: 10px 14px; font-size: 13px; margin-bottom: 14px;
}
.form-error:empty { display: none; }

/* ---------- app shell ---------- */
.shell { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: 250px minmax(0, 600px) 300px; justify-content: center; min-height: 100vh; }
.side {
  position: sticky; top: 0; height: 100vh; padding: 16px 12px; display: flex; flex-direction: column; gap: 4px;
  border-right: 1px solid var(--line);
}
.side .brand { padding: 8px 14px 18px; }
.nav a, .nav button {
  display: flex; align-items: center; gap: 16px; padding: 12px 16px; border-radius: 999px;
  font-size: 17px; font-weight: 500; width: 100%; text-align: left; position: relative;
}
.nav a:hover, .nav button:hover { background: var(--hover); text-decoration: none; }
.nav a.active { font-weight: 700; }
.nav svg { width: 24px; height: 24px; flex: none; }
.badge {
  min-width: 20px; height: 20px; padding: 0 6px; border-radius: 999px; background: var(--fg); color: var(--bg);
  font-size: 11px; font-weight: 700; display: none; align-items: center; justify-content: center;
}
.badge.show { display: inline-flex; }
.side .post-btn { margin: 14px 8px 0; }
.side .me-card {
  margin-top: auto; display: flex; align-items: center; gap: 10px; padding: 10px; border-radius: 999px;
}
.side .me-card:hover { background: var(--hover); text-decoration: none; }
.me-card .meta { min-width: 0; flex: 1; line-height: 1.25; }
.me-card .meta b, .me-card .meta span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.me-card .meta span { color: var(--fg2); font-size: 13px; }

.main { border-right: 1px solid var(--line); min-height: 100vh; min-width: 0; }
.right { padding: 16px 20px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.right .box { border: 1px solid var(--line); border-radius: 18px; padding: 14px 16px; margin-top: 14px; background: var(--card); }
.right h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.search-form input {
  width: 100%; border-radius: 999px; border: 1px solid var(--line); background: var(--card);
  padding: 10px 18px; outline: none;
}
.search-form input:focus { border-color: var(--fg); }
.right .foot { margin-top: 18px; display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.right .small { font-size: 12px; color: var(--fg2); }

.page-head {
  position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line);
  padding: 14px 18px; display: flex; align-items: center; gap: 14px;
}
.page-head h1 { font-size: 19px; font-weight: 600; line-height: 1.2; }
.page-head small { display: block; color: var(--fg2); font-size: 12px; font-weight: 400; }
.back { display: none; }

.tabs { display: flex; border-bottom: 1px solid var(--line); }
.tabs button { flex: 1; padding: 14px; font-weight: 500; color: var(--fg2); position: relative; }
.tabs button:hover { background: var(--hover); }
.tabs button.on { color: var(--fg); font-weight: 700; }
.tabs button.on::after {
  content: ''; position: absolute; left: 50%; bottom: 0; width: 56px; height: 3px; border-radius: 3px;
  background: var(--fg); transform: translateX(-50%);
}

/* ---------- avatar ---------- */
.av {
  flex: none; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%;
  background: var(--fg); color: var(--bg); font-weight: 700; overflow: hidden; text-transform: uppercase;
  width: 44px; height: 44px; font-size: 18px; border: 1px solid var(--line);
}
.av img { width: 100%; height: 100%; object-fit: cover; }
.av.s32 { width: 36px; height: 36px; font-size: 14px; }
.av.s64 { width: 64px; height: 64px; font-size: 26px; }
.av.s120 { width: 120px; height: 120px; font-size: 48px; border: 4px solid var(--bg); }

/* ---------- composer / posts ---------- */
.composer { display: flex; gap: 12px; padding: 16px 18px; border-bottom: 1px solid var(--line); }
.composer .box { flex: 1; min-width: 0; }
.composer textarea {
  width: 100%; background: transparent; border: 0; outline: none; resize: none; font-size: 18px; min-height: 56px; padding-top: 8px;
}
.composer textarea::placeholder { color: var(--fg2); }
.composer .row { display: flex; align-items: center; justify-content: flex-end; gap: 14px; border-top: 1px solid var(--line); padding-top: 10px; }
.counter { font-size: 12px; color: var(--fg2); }
.counter.warn { color: var(--fg); font-weight: 700; }

.post { display: flex; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--line); transition: background 0.15s; }
.post:hover { background: var(--hover); }
.post .body { min-width: 0; flex: 1; }
.post .top { display: flex; gap: 6px; align-items: baseline; flex-wrap: wrap; }
.post .top b { font-weight: 600; }
.post .top .u, .post .top .t { color: var(--fg2); font-size: 14px; }
.post .text { margin-top: 2px; word-wrap: break-word; overflow-wrap: anywhere; }
.post .text a { text-decoration: underline; }
.post .acts { display: flex; gap: 22px; margin-top: 8px; color: var(--fg2); }
.act { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; padding: 4px 8px; margin-left: -8px; border-radius: 999px; }
.act:hover { background: var(--shadow); color: var(--fg); }
.act svg { width: 18px; height: 18px; }
.act.liked { color: var(--fg); font-weight: 700; }
.act.liked svg { fill: currentColor; }

.empty { padding: 48px 24px; text-align: center; color: var(--fg2); }
.empty b { display: block; color: var(--fg); font-size: 18px; margin-bottom: 6px; }
.more { padding: 18px; text-align: center; }
.loading { padding: 28px; text-align: center; color: var(--fg2); }

/* ---------- perfil ---------- */
.profile-top { padding: 0 18px 16px; border-bottom: 1px solid var(--line); }
.profile-band { height: 110px; margin: 0 -18px; background: var(--card); border-bottom: 1px solid var(--line); }
.profile-row { display: flex; justify-content: space-between; align-items: flex-end; margin-top: -60px; gap: 10px; flex-wrap: wrap; }
.profile-row .btns { display: flex; gap: 8px; padding-bottom: 6px; }
.profile-top h2 { font-size: 22px; font-weight: 700; margin-top: 10px; line-height: 1.2; }
.profile-top .handle { color: var(--fg2); }
.profile-top .bio { margin-top: 10px; white-space: pre-wrap; overflow-wrap: anywhere; }
.profile-top .meta { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px 18px; color: var(--fg2); font-size: 14px; }
.profile-top .meta a { color: var(--fg); text-decoration: underline; font-weight: 500; }
.profile-top .counts { margin-top: 10px; display: flex; gap: 20px; font-size: 14px; color: var(--fg2); }
.profile-top .counts b { color: var(--fg); }

/* ---------- lista de usuários ---------- */
.urow { display: flex; align-items: center; gap: 12px; padding: 12px 18px; border-bottom: 1px solid var(--line); }
.urow:hover { background: var(--hover); }
.urow .info { flex: 1; min-width: 0; line-height: 1.3; }
.urow .info a { display: block; }
.urow .info b, .urow .info span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.urow .info span { color: var(--fg2); font-size: 13px; }
.right .urow { padding: 8px 0; border: 0; }
.right .urow:hover { background: transparent; }
.searchbar { padding: 14px 18px; border-bottom: 1px solid var(--line); }

/* ---------- mensagens ---------- */
.msgs { display: grid; grid-template-columns: 1fr; min-height: calc(100vh - 62px); }
.msgs.has-thread .conv-list { display: none; }
.conv { display: flex; gap: 12px; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.conv:hover { background: var(--hover); text-decoration: none; }
.conv .info { flex: 1; min-width: 0; line-height: 1.3; }
.conv .info b, .conv .info span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conv .info span { color: var(--fg2); font-size: 13px; }
.conv .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--fg); }
.thread { display: flex; flex-direction: column; height: calc(100vh - 62px); }
.thread-body { flex: 1; overflow-y: auto; padding: 18px; display: flex; flex-direction: column; gap: 6px; }
.bubble { max-width: 78%; padding: 9px 14px; border-radius: 18px; overflow-wrap: anywhere; white-space: pre-wrap; }
.bubble.them { align-self: flex-start; border: 1px solid var(--line); background: var(--card); border-bottom-left-radius: 4px; }
.bubble.me { align-self: flex-end; background: var(--fg); color: var(--bg); border-bottom-right-radius: 4px; }
.bubble small { display: block; font-size: 10px; opacity: 0.6; margin-top: 2px; text-align: right; }
.thread-form { display: flex; gap: 10px; padding: 12px 18px; border-top: 1px solid var(--line); }
.thread-form input { flex: 1; border-radius: 999px; border: 1px solid var(--line); background: var(--card); padding: 10px 18px; outline: none; }
.thread-form input:focus { border-color: var(--fg); }

/* ---------- configurações ---------- */
.settings { padding: 18px; max-width: 560px; }
.settings h3 { font-size: 15px; font-weight: 600; margin: 26px 0 10px; }
.settings h3:first-child { margin-top: 0; }
.avatar-edit { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.avatar-edit .btns { display: flex; gap: 8px; flex-wrap: wrap; }
.setting-row { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--line); gap: 12px; }
.setting-row span { color: var(--fg2); font-size: 13px; display: block; }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 80px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  background: var(--fg); color: var(--bg); padding: 10px 20px; border-radius: 999px; font-weight: 500; font-size: 14px;
  transition: all 0.25s; z-index: 100; max-width: 90vw; text-align: center;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- mobile ---------- */
.topbar, .tabbar { display: none; }
@media (max-width: 1100px) {
  .shell { grid-template-columns: 76px minmax(0, 600px); }
  .right { display: none; }
  .side .brand { padding-left: 12px; }
  .nav a span.lbl, .nav button span.lbl, .side .me-card .meta, .side .post-btn .lbl { display: none; }
  .nav a, .nav button { justify-content: center; padding: 12px; }
  .nav .badge { position: absolute; top: 4px; right: 4px; }
  .side .post-btn { margin: 14px 4px 0; padding: 12px 0; }
  .side .me-card { justify-content: center; padding: 6px; }
}
@media (max-width: 720px) {
  .shell { display: block; }
  .side { display: none; }
  .main { border: 0; padding-bottom: 64px; }
  .topbar {
    display: flex; align-items: center; justify-content: space-between; padding: 10px 14px;
    border-bottom: 1px solid var(--line); position: sticky; top: 0; background: var(--bg); z-index: 6;
  }
  .page-head { top: 59px; }
  .tabbar {
    display: flex; position: fixed; left: 0; right: 0; bottom: 0; background: var(--bg); border-top: 1px solid var(--line);
    justify-content: space-around; padding: 8px 0 calc(8px + env(safe-area-inset-bottom)); z-index: 20;
  }
  .tabbar a { position: relative; padding: 8px 18px; border-radius: 12px; }
  .tabbar a.active { background: var(--hover); }
  .tabbar svg { width: 24px; height: 24px; }
  .tabbar .badge { position: absolute; top: 2px; right: 6px; }
  .back { display: inline-flex; }
  .thread { height: calc(100vh - 62px - 59px - 64px); }
  .msgs { min-height: auto; }
  .pub-head { padding: 14px 16px; }
  .auth-card { padding: 26px 20px; }
}
@media (min-width: 721px) {
  .msgs.has-thread .back { display: none; }
}

/* ---------- selo de verificado / tag de IA ---------- */
.vbadge { display: inline-flex; vertical-align: -0.12em; margin-left: 4px; color: #1d9bf0; font-size: 1.05em; line-height: 1; }
.vbadge svg { display: block; }
.aitag {
  display: inline-block; vertical-align: middle; margin-left: 6px; padding: 1px 6px; border-radius: 6px;
  font-size: 0.62em; font-weight: 700; letter-spacing: .5px; line-height: 1.5;
  color: #fff; background: linear-gradient(135deg, #7c3aed, #2563eb);
}