/* =============================================================
   NOSTALGIA.EXE — Auth UI styling
   -------------------------------------------------------------
   Uses the theme tokens declared in the host page (--bg, --panel,
   --border, --text, --text-dim, --accent, --accent-2, --accent-3,
   --accent-hot, --shadow-off). Dark/light theme switching is
   entirely driven by those vars — no overrides needed here.
   ============================================================= */

/* ---------- Auth trigger button (in the header) ---------- */
.auth-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 14px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.auth-trigger:hover {
  border-color: var(--accent-2);
  color: var(--accent-2);
}
.auth-trigger[data-state="signed-in"] {
  color: var(--accent-2);
  border-color: var(--accent-2);
}
.auth-trigger .dot {
  width: 6px; height: 6px;
  background: var(--accent-hot);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--accent-hot);
}
.auth-trigger[data-state="signed-in"] .dot { background: var(--accent-2); box-shadow: 0 0 6px var(--accent-2); }
.auth-trigger[data-state="loading"] .dot { opacity: 0.4; animation: auth-pulse 1.2s infinite; }
@keyframes auth-pulse {
  0%, 100% { opacity: 0.4; } 50% { opacity: 1; }
}

/* ---------- Modal backdrop + container ---------- */
.auth-backdrop {
  position: fixed; inset: 0;
  background: rgba(10, 10, 16, 0.78);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}
[data-theme="light"] .auth-backdrop {
  background: rgba(242, 236, 216, 0.82);
}
.auth-backdrop.open { display: flex; }

.auth-modal {
  width: 100%;
  max-width: 420px;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: 8px 8px 0 var(--shadow-off);
  position: relative;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text);
  animation: auth-rise 0.25s ease-out;
}
@keyframes auth-rise {
  from { transform: translateY(12px); opacity: 0; }
  to   { transform: translateY(0);     opacity: 1; }
}

.auth-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--panel-2);
}
.auth-modal-title {
  font-family: 'Press Start 2P', monospace;
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--text-dim);
}
.auth-modal-dots { display: flex; gap: 5px; }
.auth-modal-dots span {
  width: 10px; height: 10px;
  background: var(--accent-hot);
}
.auth-modal-dots span:nth-child(2) { background: var(--accent-2); }
.auth-modal-dots span:nth-child(3) { background: var(--accent-3); }

.auth-modal-close {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  width: 22px; height: 22px;
  display: inline-grid; place-items: center;
  cursor: pointer;
  font-family: inherit;
  font-size: 12px;
  line-height: 1;
}
.auth-modal-close:hover { color: var(--accent-hot); border-color: var(--accent-hot); }
.auth-modal.locked .auth-modal-close { display: none; }

/* ---------- Tabs ---------- */
.auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--border);
}
.auth-tab {
  appearance: none;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 14px 10px;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.auth-tab:hover { color: var(--text); }
.auth-tab.active {
  color: var(--accent-2);
  border-bottom-color: var(--accent-2);
}
.auth-modal.locked .auth-tabs { display: none; }

/* ---------- Panel content ---------- */
.auth-panel {
  padding: 22px 22px 24px;
  display: none;
}
.auth-panel.active { display: block; }
.auth-panel h2 {
  font-family: 'Press Start 2P', monospace;
  font-size: 14px;
  margin-bottom: 6px;
  color: var(--text);
}
.auth-panel p.auth-blurb {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.5;
  margin-bottom: 18px;
}

/* ---------- Form fields ---------- */
.auth-field { display: block; margin-bottom: 14px; }
.auth-field-label {
  display: block;
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.auth-input {
  width: 100%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 11px 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s, background 0.15s;
}
.auth-input:focus {
  border-color: var(--accent-2);
  background: var(--panel-2);
}
.auth-input::placeholder { color: var(--text-dim); opacity: 0.6; }
.auth-input.invalid { border-color: var(--accent-hot); }

.auth-hint {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  color: var(--text-dim);
}
.auth-hint.error { color: var(--accent-hot); }
.auth-hint.ok    { color: var(--accent-2); }

/* ---------- Buttons ---------- */
.auth-submit {
  width: 100%;
  padding: 12px 14px;
  margin-top: 8px;
  background: var(--accent-2);
  color: var(--bg);
  border: none;
  font-family: 'Press Start 2P', monospace;
  font-size: 11px;
  letter-spacing: 1px;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--shadow-off);
  transition: transform 0.1s, box-shadow 0.1s, opacity 0.15s;
}
.auth-submit:hover:not(:disabled) {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--shadow-off);
}
.auth-submit:active:not(:disabled) {
  transform: translate(2px, 2px);
  box-shadow: 0 0 0 var(--shadow-off);
}
.auth-submit:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: 2px 2px 0 var(--shadow-off);
}

.auth-secondary {
  appearance: none;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  padding: 10px 14px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color 0.15s, border-color 0.15s;
}
.auth-secondary:hover { color: var(--text); border-color: var(--text-dim); }

/* ---------- "OR" divider between password form and OAuth button ---------- */
/* Two flexed pseudo-rules + a small uppercase label. Inherits theme tokens
   so light + dark modes both look balanced.                                  */
.auth-or {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 18px 0 14px;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.auth-or::before,
.auth-or::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ---------- OAuth buttons (Google + GitHub) ---------- */
/* Shared base: same retro/cyber language as .auth-submit (Press Start 2P,
   chunky offset shadow, hover lift) so the modal stays visually
   consistent. Each provider gets its own accent color so the user can
   tell them apart at a glance:
     • SIGN IN   → --accent-2  (cyan, primary action)
     • Google    → --accent-3  (lavender / soft purple)
     • GitHub    → --accent    (electric blue / soft pink in light mode)
   Swap providers around freely — the markup just sets a class.            */
.auth-oauth {
  width: 100%;
  padding: 12px 14px;
  margin-top: 0;
  color: var(--bg);
  border: none;
  font-family: 'Press Start 2P', monospace;
  font-size: 11px;
  letter-spacing: 1px;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--shadow-off);
  transition: transform 0.1s, box-shadow 0.1s, opacity 0.15s;
}
.auth-oauth + .auth-oauth { margin-top: 10px; }
.auth-oauth:hover:not(:disabled) {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--shadow-off);
}
.auth-oauth:active:not(:disabled) {
  transform: translate(2px, 2px);
  box-shadow: 0 0 0 var(--shadow-off);
}
.auth-oauth:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: 2px 2px 0 var(--shadow-off);
}

.auth-google { background: var(--accent-3); }
.auth-github { background: var(--accent);   }

/* ---------- Feedback / status banners ---------- */
.auth-banner {
  margin-top: 14px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  font-size: 12px;
  color: var(--text);
  line-height: 1.45;
  display: none;
}
.auth-banner.visible { display: block; }
.auth-banner.success { border-color: var(--accent-2); color: var(--accent-2); }
.auth-banner.error   { border-color: var(--accent-hot); color: var(--accent-hot); }

/* ---------- Signed-in chip (in header) ---------- */
.auth-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 10px 0 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.3px;
}
.auth-chip .chip-name {
  color: var(--accent-2);
  font-weight: 700;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.auth-chip .chip-signout {
  appearance: none;
  background: transparent;
  color: var(--text-dim);
  border: none;
  border-left: 1px solid var(--border);
  padding-left: 8px;
  margin-left: 4px;
  cursor: pointer;
  font-family: inherit;
  font-size: 11px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: color 0.15s;
}
.auth-chip .chip-signout:hover { color: var(--accent-hot); }

/* ---------- Username-setup specific ---------- */
.auth-modal.locked .auth-modal-header { border-bottom-color: var(--accent-2); }
.auth-username-rules {
  margin: -6px 0 14px;
  padding: 10px 12px;
  border: 1px dashed var(--border);
  background: var(--bg-alt);
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.55;
}
.auth-username-rules strong { color: var(--text); }

/* ---------- Mobile ---------- */
@media (max-width: 520px) {
  .auth-modal { max-width: 100%; box-shadow: 6px 6px 0 var(--shadow-off); }
  .auth-panel { padding: 18px; }
  .auth-chip .chip-name { max-width: 80px; }
}

/* ---------- Hide footer actions when locked (username-setup mode) ---------- */
.auth-modal.locked .auth-panel[data-panel="signin"],
.auth-modal.locked .auth-panel[data-panel="signup"] { display: none !important; }
.auth-modal:not(.locked) .auth-panel[data-panel="username"] { display: none !important; }