/* ════════════════════════════════════════════════════════════════
   AUTH + SYNC — login/registro. Estilado para fundirse con el resto
   de la app (mismas variables, radios, sombras y breakpoint 540px).
   ════════════════════════════════════════════════════════════════ */

/* ── Botón de cuenta en el HUD (gemelo de .hud-sound-btn) ───────── */
.hud-account-btn {
  background: var(--bg-2);
  border: 1px solid rgba(255,255,255,0.06);
  color: var(--text-1);
  width: 36px; height: 36px;
  border-radius: 99px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  font-size: 1rem;
  flex-shrink: 0;
  padding: 0;
  position: relative;
}
.hud-account-btn:hover { background: var(--bg-3); color: var(--text-0); }
.hud-account-btn.logged-in { border-color: transparent; background: transparent; }
.hud-acc-avatar {
  width: 30px; height: 30px;
  border-radius: 99px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--azure), var(--violet));
  color: #fff; font-weight: 800; font-size: 0.85rem;
  font-family: 'Space Grotesk', sans-serif;
  box-shadow: 0 2px 10px -2px rgba(43,158,255,0.6);
}
/* Pulso suave de "guardando" sobre el botón */
.hud-account-btn.syncing::after {
  content: '';
  position: absolute; top: -1px; right: -1px;
  width: 9px; height: 9px; border-radius: 99px;
  background: var(--gold);
  border: 2px solid var(--bg-0);
  animation: pulse-cy 1s infinite;
}

/* ── Overlay ─────────────────────────────────────────────────────── */
.auth-overlay {
  display: none;
  position: fixed; inset: 0;
  z-index: 600;
  background: rgba(11,15,26,0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 20px 16px calc(20px + env(safe-area-inset-bottom, 0px));
  overflow-y: auto;
  overscroll-behavior: contain;
}
.auth-overlay.open { display: grid; place-items: center; animation: authFade 0.2s ease; }
body.auth-open { overflow: hidden; }
@keyframes authFade { from { opacity: 0; } to { opacity: 1; } }

.auth-modal {
  width: min(94vw, 400px);
  max-height: calc(100svh - 40px);
  overflow-y: auto;
  background: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 100%);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lift), 0 0 48px -12px rgba(43,158,255,0.25);
  padding: 26px 22px 22px;
  position: relative;
  animation: authPop 0.32s cubic-bezier(.4,1.4,.5,1);
}
@keyframes authPop {
  from { opacity: 0; transform: translateY(16px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-close {
  position: absolute; top: 12px; right: 12px;
  width: 34px; height: 34px;
  border-radius: 99px;
  background: var(--bg-2);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text-1);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  transition: all var(--transition);
}
.auth-close:hover { background: var(--bg-3); color: var(--text-0); transform: rotate(90deg); }

/* ── Cabecera ──────────────────────────────────────────────────── */
.auth-head { text-align: center; margin-bottom: 18px; }
.auth-logo, .auth-avatar {
  width: 56px; height: 56px;
  margin: 0 auto 12px;
  border-radius: 18px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem;
  background: linear-gradient(135deg, var(--azure), var(--violet));
  box-shadow: var(--shadow-glow-blue);
}
.auth-avatar {
  border-radius: 99px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800; font-size: 1.6rem; color: #fff;
}
.auth-head h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.18rem; font-weight: 800; margin: 0 0 6px;
  letter-spacing: -0.01em; line-height: 1.2;
}
.auth-head p { color: var(--text-2); font-size: 0.85rem; margin: 0; line-height: 1.5; }

/* ── Tabs ──────────────────────────────────────────────────────── */
.auth-tabs {
  display: grid; grid-template-columns: 1fr 1fr; gap: 4px;
  background: var(--bg-0);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-sm);
  padding: 4px; margin-bottom: 16px;
}
.auth-tab {
  padding: 9px 8px;
  border: none; background: transparent;
  color: var(--text-2); font: inherit; font-weight: 700; font-size: 0.88rem;
  border-radius: 7px; cursor: pointer;
  transition: all var(--transition);
}
.auth-tab:hover { color: var(--text-1); }
.auth-tab.active {
  background: linear-gradient(135deg, var(--azure), var(--azure-deep));
  color: #fff;
  box-shadow: 0 4px 12px -3px rgba(43,158,255,0.5);
}

/* ── Formulario ────────────────────────────────────────────────── */
.auth-form { display: flex; flex-direction: column; gap: 12px; }
.auth-field { display: flex; flex-direction: column; gap: 6px; }
.auth-field > span {
  font-size: 0.74rem; font-weight: 700; color: var(--text-2);
  text-transform: uppercase; letter-spacing: 0.5px;
}
.auth-field input {
  width: 100%;
  background: var(--bg-0);
  border: 1.5px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  color: var(--text-0);
  padding: 12px 14px;
  font-family: inherit;
  font-size: 16px;                 /* 16px: evita el zoom automático de iOS al enfocar */
  transition: border-color var(--transition), box-shadow var(--transition);
}
.auth-field input::placeholder { color: var(--text-2); opacity: 0.7; }
.auth-field input:focus {
  outline: none;
  border-color: var(--azure);
  box-shadow: 0 0 0 3px rgba(43,158,255,0.18);
}
.auth-pass-wrap { position: relative; display: flex; }
.auth-pass-wrap input { padding-right: 44px; }
.auth-eye {
  position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  width: 36px; height: 36px;
  background: none; border: none; color: var(--text-2);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  font-size: 1rem; border-radius: 8px;
  transition: color var(--transition);
}
.auth-eye:hover { color: var(--text-0); }

.auth-error {
  display: none;
  background: rgba(239,68,68,0.12);
  border: 1px solid rgba(239,68,68,0.35);
  border-radius: var(--radius-sm);
  color: #fecaca;
  font-size: 0.82rem; font-weight: 600;
  padding: 9px 12px;
  line-height: 1.4;
}
.auth-error.show { display: block; animation: fbIn 0.25s; }

.auth-submit {
  margin-top: 2px;
  padding: 14px 18px;
  border: none; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--azure), var(--azure-deep));
  color: #fff; font: inherit; font-weight: 800; font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 8px 20px -4px rgba(43,158,255,0.5);
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
}
.auth-submit:hover:not(:disabled) { transform: translateY(-2px); }
.auth-submit:disabled { cursor: default; opacity: 0.85; }
.auth-submit.loading { color: transparent; }
.auth-submit.loading::after {
  content: '';
  position: absolute; top: 50%; left: 50%;
  width: 18px; height: 18px; margin: -9px 0 0 -9px;
  border: 2.5px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.auth-hint {
  text-align: center; color: var(--text-2);
  font-size: 0.74rem; margin: 14px 0 0; line-height: 1.45;
}

/* ── Vista de conflicto (local vs nube) ────────────────────────── */
.auth-choice-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.auth-choice {
  display: flex; flex-direction: column; gap: 4px; align-items: flex-start;
  background: var(--bg-1);
  border: 1.5px solid rgba(255,255,255,0.1);
  border-radius: var(--radius); padding: 14px;
  cursor: pointer; font: inherit; color: var(--text-0);
  transition: all var(--transition); text-align: left;
}
.auth-choice:hover { border-color: var(--azure); background: rgba(43,158,255,0.08); transform: translateY(-2px); }
.auth-choice .ac-where { font-weight: 700; font-size: 0.9rem; }
.auth-choice .ac-lvl {
  font-family: 'Space Grotesk', sans-serif; font-weight: 800; font-size: 1.1rem; color: var(--gold);
}
.auth-choice .ac-meta { font-size: 0.72rem; color: var(--text-2); }

/* ── Vista de cuenta ───────────────────────────────────────────── */
#auth-view-account { text-align: center; }
#auth-sync-status { display: inline-flex; align-items: center; gap: 6px; }
.auth-logout {
  width: 100%;
  margin-top: 4px;
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  background: rgba(239,68,68,0.12);
  border: 1px solid rgba(239,68,68,0.35);
  color: #fecaca; font: inherit; font-weight: 700; font-size: 0.95rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  transition: all var(--transition);
}
.auth-logout:hover { background: rgba(239,68,68,0.22); transform: translateY(-1px); }

/* ── Móvil ─────────────────────────────────────────────────────── */
@media (max-width: 540px) {
  .auth-modal { padding: 24px 18px 20px; border-radius: var(--radius); }
  .auth-head h2 { font-size: 1.08rem; }
  .auth-choice-row { grid-template-columns: 1fr; }
  .auth-logo, .auth-avatar { width: 50px; height: 50px; }
}