*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:       #0d1117;
  --surface:  #161b22;
  --border:   #30363d;
  --text:     #c9d1d9;
  --muted:    #8b949e;
  --accent:   #CC1212;
  --accent-h: #e53535;
  --ok:       #3fb950;
  --warn:     #d29922;
  --err:      #f85149;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

/* ── Topbar (global — mesma em todas as páginas) ─────────────────────────── */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 10px 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.topbar-brand {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
}
.topbar-title { font-size: .85rem; color: var(--muted); }
.topbar-link {
  color: var(--muted);
  font-size: .8rem;
  text-decoration: none;
  padding: .25rem .6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: color .15s;
}
.topbar-link:hover { color: var(--text); }

/* ── Page layout ────────────────────────────────────────────────────────── */
.settings-page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem 2rem;
}

.settings-layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 760px) {
  .settings-layout { grid-template-columns: 1fr; }
}

.settings-panel,
.aside-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
}

.settings-aside {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.panel-title {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--muted);
  margin-bottom: 1.1rem;
  padding-bottom: .7rem;
  border-bottom: 1px solid var(--border);
}

/* ── Status bar ──────────────────────────────────────────────────────────── */
.settings-page .status-bar {
  display: flex;
  align-items: center;
  gap: .5rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .6rem 1rem;
  font-size: .82rem;
}
.settings-page .dot       { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.settings-page .dot.ok    { background: var(--ok); }
.settings-page .dot.warn  { background: var(--warn); }
.settings-page .dot.err   { background: var(--err); }
.settings-page .status-text  { color: var(--muted); }
.settings-page .status-value { color: var(--text); font-weight: 500; margin-left: auto; text-align: right; font-size: .8rem; }

/* ── Form fields ─────────────────────────────────────────────────────────── */
.settings-panel label {
  display: block;
  font-size: .76rem;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: .4rem;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.settings-panel .field { margin-bottom: 1.25rem; }

.settings-panel input[type="text"],
.settings-panel input[type="password"] {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: .88rem;
  padding: .55rem .85rem;
  outline: none;
  transition: border-color .15s;
}
.settings-panel input:focus { border-color: var(--accent); }

.settings-panel select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: .88rem;
  padding: .55rem .85rem;
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238b949e' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .85rem center;
  padding-right: 2.2rem;
  transition: border-color .15s;
}
.settings-panel select:focus { border-color: var(--accent); }
.settings-panel option { background: var(--surface); color: var(--text); }

/* ── Provider buttons ────────────────────────────────────────────────────── */
.providers {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .6rem;
  margin-bottom: 1.25rem;
}
.provider-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  cursor: pointer;
  font-size: .85rem;
  font-weight: 500;
  padding: .65rem .5rem;
  text-align: center;
  transition: border-color .15s, color .15s, background .15s;
}
.provider-btn:hover { border-color: var(--accent); color: var(--text); }
.provider-btn.active {
  border-color: var(--accent);
  background: rgba(204, 18, 18, .12);
  color: var(--accent-h);
}
.provider-icon { font-size: 1.15rem; display: block; margin-bottom: .25rem; }

/* ── Key / token rows ────────────────────────────────────────────────────── */
#api-key-section { display: none; }
#api-key-section.visible { display: block; }

.settings-panel .key-row { display: flex; gap: .5rem; }
.settings-panel .key-row input { flex: 1; }

.toggle-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  cursor: pointer;
  font-size: .85rem;
  padding: 0 .75rem;
  flex-shrink: 0;
  transition: color .15s;
}
.toggle-btn:hover { color: var(--text); }

.settings-panel .hint           { font-size: .76rem; color: var(--muted); margin-top: .4rem; }
.settings-panel .effective-model { font-size: .76rem; color: var(--muted); margin-top: .4rem; }
.settings-panel .effective-model span { color: var(--accent-h); }

.token-section {
  border-top: 1px solid var(--border);
  margin-top: 1.25rem;
  padding-top: 1.25rem;
}

/* ── Actions ─────────────────────────────────────────────────────────────── */
.settings-panel .actions {
  display: flex;
  gap: .75rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.settings-panel .btn {
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: .88rem;
  font-weight: 600;
  padding: .6rem 1.25rem;
  transition: opacity .15s, filter .15s;
}
.settings-panel .btn:disabled { opacity: .45; cursor: not-allowed; }
.settings-panel .btn-primary   { background: var(--accent); color: #fff; flex: 1; }
.settings-panel .btn-primary:hover:not(:disabled) { filter: brightness(1.1); }
.settings-panel .btn-secondary {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--muted);
}
.settings-panel .btn-secondary:hover:not(:disabled) { color: var(--text); border-color: var(--muted); }

/* ── Feedback ────────────────────────────────────────────────────────────── */
#feedback {
  margin-top: 1rem;
  font-size: .84rem;
  border-radius: 8px;
  padding: .6rem .85rem;
  display: none;
}
#feedback.ok {
  display: block;
  background: rgba(63, 185, 80, .12);
  color: var(--ok);
  border: 1px solid rgba(63, 185, 80, .3);
}
#feedback.err {
  display: block;
  background: rgba(248, 81, 73, .12);
  color: var(--err);
  border: 1px solid rgba(248, 81, 73, .3);
}

/* ── Comparison box ──────────────────────────────────────────────────────── */
.compare-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: .82rem;
  color: var(--text);
}

/* ── Aside panel label ───────────────────────────────────────────────────── */
.aside-panel label {
  display: block;
  font-size: .76rem;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: .6rem;
  text-transform: uppercase;
  letter-spacing: .06em;
}

/* ── Tabs ────────────────────────────────────────────────────────────────── */
.tabs { display: flex; gap: 2px; margin-bottom: 1.5rem; border-bottom: 2px solid var(--border); }
.tab-btn {
  background: transparent; border: none; color: var(--muted); cursor: pointer;
  font-size: .82rem; font-weight: 600; padding: .6rem 1.1rem;
  border-bottom: 2px solid transparent; margin-bottom: -2px; transition: color .15s, border-color .15s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent-h); border-bottom-color: var(--accent); }

/* ── Toggle switch ───────────────────────────────────────────────────────── */
.toggle-row { display: flex; align-items: center; justify-content: space-between; padding: .55rem 0; }
.toggle-label { font-size: .82rem; color: var(--text); }
.toggle-desc  { font-size: .72rem; color: var(--muted); margin-top: .15rem; }
.toggle-switch { position: relative; width: 44px; height: 24px; flex-shrink: 0; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background: var(--border); border-radius: 24px; transition: .25s; }
.toggle-slider:before { position: absolute; content: ""; height: 18px; width: 18px; left: 3px; bottom: 3px; background: var(--text); border-radius: 50%; transition: .25s; }
.toggle-switch input:checked + .toggle-slider { background: var(--accent); }
.toggle-switch input:checked + .toggle-slider:before { transform: translateX(20px); }

/* ── Status card ─────────────────────────────────────────────────────────── */
.status-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; margin-bottom: 1.5rem; }
@media (max-width: 760px) { .status-cards { grid-template-columns: 1fr; } }
.status-card { background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: .9rem 1rem; text-align: center; }
.status-card .card-value { font-size: 1.5rem; font-weight: 700; }
.status-card .card-label { font-size: .68rem; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; margin-top: .2rem; }
.status-card.ok .card-value { color: var(--ok); }
.status-card.warn .card-value { color: var(--warn); }
.status-card.err .card-value { color: var(--err); }

/* ── Slider input ────────────────────────────────────────────────────────── */
.slider-row { display: flex; align-items: center; gap: .8rem; }
.slider-row input[type="range"] { flex: 1; accent-color: var(--accent); }
.slider-row .slider-value { min-width: 3rem; text-align: right; font-size: .85rem; font-weight: 600; color: var(--text); }