/* ════════════════════════════════════════════════════════════════════
   SymposiON — Revamp · AUTH SKIN
   On-brand alabaster skin for the Firebase auth modal + sign-out confirm
   (markup brought from Ver1, driven by js/auth.js). Uses the revamp's
   derived token tree (--card/--fg/--terra/--line …) so it tracks the theme.
   Also styles the nav signed-in chip (.syn-authchip).
   ════════════════════════════════════════════════════════════════════ */

/* ── Overlay ─────────────────────────────────────────────────────────── */
.auth-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 4000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: color-mix(in srgb, var(--sym-ink, #1E1810) 46%, transparent);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.auth-modal-overlay.active { display: flex; animation: sym-auth-fade .18s ease; }
@keyframes sym-auth-fade { from { opacity: 0; } to { opacity: 1; } }

/* ── Card ────────────────────────────────────────────────────────────── */
.auth-modal-box {
  width: 100%;
  max-width: 384px;
  background: var(--card);
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px 26px 24px;
  box-shadow: 0 24px 64px var(--shadow), 0 2px 0 var(--line-soft) inset;
  font-family: var(--sans, system-ui, sans-serif);
  animation: sym-auth-pop .22s cubic-bezier(.2,.9,.3,1.1);
}
@keyframes sym-auth-pop { from { transform: translateY(10px) scale(.98); opacity: 0; } to { transform: none; opacity: 1; } }

.auth-modal-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.auth-modal-logo {
  font-family: var(--disp, 'Oswald', sans-serif);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--fg);
}
.auth-modal-logo span { color: var(--terra); }

.auth-close-btn {
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-size: 15px; line-height: 1;
  cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
}
.auth-close-btn:hover { color: var(--fg); border-color: var(--line-bold); background: var(--sink); }

/* ── Tabs ────────────────────────────────────────────────────────────── */
.auth-tabs { display: flex; gap: 6px; margin-bottom: 20px; border-bottom: 1px solid var(--line-soft); }
.auth-tab {
  flex: 1;
  padding: 10px 4px 12px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-family: var(--sans, sans-serif);
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  transition: color .15s, border-color .15s;
}
.auth-tab:hover { color: var(--fg); }
.auth-tab.active { color: var(--fg); border-color: var(--terra); }

/* ── OAuth buttons ───────────────────────────────────────────────────── */
.auth-oauth-row { display: flex; gap: 10px; margin-bottom: 16px; }
.auth-oauth-btn {
  flex: 1;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 8px;
  background: var(--raise);
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--fg);
  font-family: var(--sans, sans-serif);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s, border-color .15s, transform .1s;
}
.auth-oauth-btn:hover { background: var(--sink); border-color: var(--line-bold); }
.auth-oauth-btn:active { transform: scale(.99); }
.auth-oauth-btn:disabled { opacity: .5; cursor: not-allowed; }

/* ── Divider ─────────────────────────────────────────────────────────── */
.auth-divider {
  display: flex; align-items: center; gap: 12px;
  margin: 14px 0 16px;
  color: var(--muted);
  font-size: 12px;
}
.auth-divider::before, .auth-divider::after { content: ''; flex: 1; height: 1px; background: var(--line); }

/* ── Inputs ──────────────────────────────────────────────────────────── */
.auth-input {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--fg);
  font-family: var(--sans, sans-serif);
  font-size: 14px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.auth-input::placeholder { color: var(--muted); }
.auth-input:focus { border-color: var(--terra); box-shadow: 0 0 0 3px var(--terra-soft); }

/* ── Submit ──────────────────────────────────────────────────────────── */
.auth-submit-btn {
  width: 100%;
  padding: 13px 14px;
  margin-top: 2px;
  background: var(--terra);
  border: 1px solid var(--terra-dk);
  border-radius: 11px;
  color: #fff;
  font-family: var(--sans, sans-serif);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: .01em;
  cursor: pointer;
  transition: background .15s, transform .1s;
}
.auth-submit-btn:hover { background: var(--terra-dk); }
.auth-submit-btn:active { transform: scale(.99); }
.auth-submit-btn:disabled { opacity: .55; cursor: not-allowed; }

/* ── Switch link + error ─────────────────────────────────────────────── */
.auth-switch-link { text-align: center; font-size: 12.5px; color: var(--muted); margin: 8px 0 0; }
.auth-switch-link span { color: var(--terra); cursor: pointer; text-decoration: underline; text-underline-offset: 3px; font-weight: 600; }
.auth-switch-link span:hover { color: var(--terra-dk); }

.auth-error {
  margin-top: 14px;
  padding: 10px 12px;
  background: var(--terra-soft);
  border: 1px solid color-mix(in srgb, var(--terra) 35%, transparent);
  border-radius: 10px;
  color: var(--terra-dk);
  font-size: 12.5px;
  line-height: 1.4;
}

/* ── Sign-out confirm modal ──────────────────────────────────────────── */
.sym-confirm-overlay {
  position: fixed;
  inset: 0;
  z-index: 4001;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: color-mix(in srgb, var(--sym-ink, #1E1810) 46%, transparent);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.sym-confirm-overlay.active { display: flex; animation: sym-auth-fade .18s ease; }
.sym-confirm-box {
  width: 100%;
  max-width: 340px;
  background: var(--card);
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px 26px 22px;
  text-align: center;
  box-shadow: 0 24px 64px var(--shadow);
  font-family: var(--sans, sans-serif);
  animation: sym-auth-pop .22s cubic-bezier(.2,.9,.3,1.1);
}
.sym-confirm-icon {
  width: 52px; height: 52px;
  margin: 0 auto 14px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 999px;
  background: var(--terra-soft);
  color: var(--terra);
  font-size: 22px;
}
.sym-confirm-title { font-family: var(--disp, sans-serif); font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.sym-confirm-msg { font-size: 13.5px; color: var(--muted); margin-bottom: 20px; line-height: 1.45; }
.sym-confirm-btns { display: flex; gap: 10px; }
.sym-confirm-btn {
  flex: 1;
  padding: 11px 12px;
  border-radius: 11px;
  font-family: var(--sans, sans-serif);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.sym-confirm-cancel { background: var(--raise); border: 1px solid var(--line); color: var(--fg); }
.sym-confirm-cancel:hover { background: var(--sink); border-color: var(--line-bold); }
.sym-confirm-yes { background: var(--terra); border: 1px solid var(--terra-dk); color: #fff; }
.sym-confirm-yes:hover { background: var(--terra-dk); }

/* ════════════════════════════════════════════════════════════════════
   NAV SIGNED-IN CHIP — sits in .syn-nav__act in place of the sign-in /
   sign-up buttons once a user is authenticated.
   ════════════════════════════════════════════════════════════════════ */
.syn-authchip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px 5px 6px;
  background: var(--raise);
  border: 1px solid var(--line);
  border-radius: 999px;
}
.syn-authchip__av {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 999px;
  background: var(--terra);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  font-family: var(--sans, sans-serif);
  flex: 0 0 auto;
}
.syn-authchip__nm {
  font-family: var(--sans, sans-serif);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--fg);
  max-width: 130px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.syn-authchip__out {
  width: 26px; height: 26px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 14px;
  transition: color .15s, border-color .15s, background .15s;
}
.syn-authchip__out:hover { color: var(--terra); border-color: var(--terra); background: var(--terra-soft); }