/* ============================================================ AUTH SCREEN */
#screen-auth {
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--dark-core);
}

.auth-box {
  width: 100%;
  max-width: 420px;
  background: var(--panel-surface);
  border: 1px solid var(--border-line);
  border-radius: 16px;
  padding: 40px;
}

/* ── Logo ──────────────────────────────────────────────────── */
.auth-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}
.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--border-line);
  overflow: hidden;
  flex-shrink: 0;
  background: #000;
}
.logo-mark svg { width: 20px; height: 20px; }

.logo-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}
.logo-name .xx { color: var(--acid); }

.logo-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-top: 2px;
}

/* ── Tabs ──────────────────────────────────────────────────── */
.auth-tabs {
  display: flex;
  gap: 4px;
  background: var(--dark-core);
  border: 1px solid var(--border-line);
  border-radius: 8px;
  padding: 4px;
  margin-bottom: 28px;
}
.auth-tab {
  flex: 1;
  padding: 8px;
  border: none;
  border-radius: 5px;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 150ms ease;
}
.auth-tab.active {
  background: var(--border-line);
  color: var(--text-primary);
}

/* ── Campos ────────────────────────────────────────────────── */
.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.field input,
.field select {
  width: 100%;
  background: var(--dark-core);
  border: 1px solid var(--border-line);
  border-radius: 8px;
  padding: 11px 14px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  outline: none;
  transition: border-color 150ms ease;
}
.field input:focus,
.field select:focus { border-color: var(--acid); }
.field input::placeholder { color: var(--text-muted); }
.field select option { background: var(--panel-surface); }

/* ── Botón principal ───────────────────────────────────────── */
.btn-primary {
  width: 100%;
  padding: 13px;
  background: var(--acid);
  color: #050505;
  border: none;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 150ms ease, transform 150ms ease;
  margin-top: 4px;
}
.btn-primary:hover {
  background: var(--conexxa-green);
  transform: translateY(-1px);
}
.btn-primary:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

/* ── Mensajes ──────────────────────────────────────────────── */
.auth-msg {
  margin-top: 14px;
  padding: 10px 14px;
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 13px;
  display: none;
}
.auth-msg.error   { background: var(--red-dim);   color: #FF8A80; border: 1px solid rgba(255,59,48,0.20); }
.auth-msg.success { background: var(--green-dim);  color: var(--acid); border: 1px solid var(--green-border); }