/* ========================
   AUTH SCREEN
   Pixel-art styled auth & profile UI
   Uses shared design tokens from shared-tokens.css
   ======================== */

#auth-screen {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 10, 10, 0.6);
  transition: opacity 0.4s ease;
}

#auth-screen.auth-hidden {
  display: none;
}

#auth-screen.auth-fade-out {
  opacity: 0;
  pointer-events: none;
}

/* Panel */
.auth-panel {
  position: relative;
  width: 320px;
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--space-3xl) var(--space-2xl);
  background: var(--bg-panel);
  border: var(--border-width) solid var(--border-dark);
  -webkit-clip-path: var(--clip-rounded-8);
  clip-path: var(--clip-rounded-8);
}

/* Close button (return to game) */
.auth-close-btn {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 28px;
  height: 28px;
  padding: 0;
  background: transparent;
  border: var(--border-width) solid var(--border-dark);
  color: var(--text-muted);
  font-family: var(--font-small);
  font-size: var(--font-size-small);
  cursor: var(--cursor-pointer);
  transition: border-color 0.1s, color 0.1s;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.auth-close-btn:hover {
  border-color: var(--text-muted);
  color: var(--text-primary);
}

.auth-close-btn.hidden {
  display: none;
}

/* Stages */
.auth-stage {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.auth-stage.hidden {
  display: none;
}

/* Title */
.auth-title {
  font-family: var(--font-header);
  font-size: var(--font-size-header);
  color: var(--text-primary);
  text-align: center;
  text-shadow: var(--header-text-shadow);
  margin-bottom: var(--space-xs);
}

.auth-subtitle {
  font-family: var(--font-small);
  font-size: var(--font-size-small);
  color: var(--text-muted);
  text-align: center;
  letter-spacing: 2px;
  margin-bottom: var(--space-lg);
}

/* Stage transition animations */
.auth-stage.auth-stage-exit {
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.auth-stage.auth-stage-enter {
  animation: auth-stage-in 0.2s ease forwards;
}

@keyframes auth-stage-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================
   AUTH BUTTONS
   ======================== */

.auth-providers {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.auth-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  border: var(--border-width) solid var(--border-dark);
  background: var(--bg-panel-light);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  cursor: var(--cursor-pointer);
  transition: background 0.1s, border-color 0.1s, color 0.1s;
  -webkit-clip-path: var(--clip-rounded-4);
  clip-path: var(--clip-rounded-4);
}

.auth-btn:hover:not(:disabled) {
  background: var(--bg-highlight);
  border-color: var(--border-light);
  color: var(--text-primary);
}

.auth-btn:disabled {
  opacity: 0.3;
  cursor: var(--cursor-pointer);
}

.auth-btn-icon {
  font-size: var(--font-size-body);
  width: var(--icon-sm);
  text-align: center;
}

/* Provider-specific hover accents */
.auth-btn-google:hover:not(:disabled) {
  border-color: var(--cobalt);
}

.auth-btn-email:hover:not(:disabled) {
  border-color: var(--accent-gold);
}

.auth-btn-guest {
  background: transparent;
  border-style: dashed;
  border-color: var(--border-dark);
  color: var(--text-muted);
  font-family: var(--font-small);
  font-size: var(--font-size-small);
}

.auth-btn-guest:hover:not(:disabled) {
  border-color: var(--text-muted);
  color: var(--text-secondary);
}

.auth-btn-primary {
  background: rgba(34, 197, 94, 0.15);
  border-color: var(--success);
  color: var(--success);
}

.auth-btn-primary:hover:not(:disabled) {
  background: rgba(34, 197, 94, 0.25);
  color: var(--viridian-light);
}

.auth-btn-secondary {
  background: transparent;
  border-color: var(--border-dark);
  color: var(--text-muted);
  font-family: var(--font-small);
  font-size: var(--font-size-small);
}

.auth-btn-link {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-small);
  font-size: var(--font-size-small);
  padding: var(--space-xs);
}

.auth-btn-link:hover:not(:disabled) {
  color: var(--text-secondary);
  background: transparent;
}

.auth-btn-back {
  background: transparent;
  border: var(--border-width) solid var(--border-dark);
  color: var(--text-muted);
  font-family: var(--font-small);
  font-size: var(--font-size-small);
}

.auth-btn-signout {
  background: transparent;
  border: var(--border-width) solid rgba(239, 68, 68, 0.3);
  color: var(--danger);
  font-family: var(--font-small);
  font-size: var(--font-size-small);
  padding: var(--space-sm);
  margin-top: var(--space-sm);
  opacity: 0.6;
}

.auth-btn-signout:hover:not(:disabled) {
  border-color: var(--danger);
  opacity: 1;
  background: rgba(239, 68, 68, 0.08);
}

/* Divider */
.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin: var(--space-sm) 0;
  color: var(--text-muted);
  font-family: var(--font-small);
  font-size: var(--font-size-small);
  letter-spacing: 2px;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: var(--border-width);
  background: var(--border-dark);
}

/* Input */
.auth-input {
  width: 100%;
  padding: var(--space-md) var(--space-md);
  background: #0a0a0a;
  border: var(--border-width) solid var(--border-dark);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  outline: none;
  transition: border-color 0.1s;
  box-sizing: border-box;
  -webkit-clip-path: var(--clip-rounded-4);
  clip-path: var(--clip-rounded-4);
}

.auth-input:focus {
  border-color: var(--text-muted);
}

.auth-input::placeholder {
  color: var(--text-muted);
}

/* Error */
.auth-error {
  padding: var(--space-sm) var(--space-md);
  background: rgba(239, 68, 68, 0.1);
  border: var(--border-width) solid rgba(239, 68, 68, 0.3);
  color: var(--danger);
  font-family: var(--font-small);
  font-size: var(--font-size-small);
  text-align: center;
}

.auth-error.hidden {
  display: none;
}

/* ========================
   PROFILE SLOTS
   ======================== */

.auth-profile-slots {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin: var(--space-sm) 0;
}

.auth-profile-slot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-panel-light);
  border: var(--border-width) solid var(--border-dark);
  cursor: var(--cursor-pointer);
  transition: background 0.1s, border-color 0.1s;
  -webkit-clip-path: var(--clip-rounded-4);
  clip-path: var(--clip-rounded-4);
}

.auth-profile-slot:hover {
  background: var(--bg-highlight);
  border-color: var(--text-muted);
}

/* Faction colors on profile slots */
.auth-profile-slot.faction-rust {
  border-left: var(--border-width-thick) solid var(--rust);
}

.auth-profile-slot.faction-cobalt {
  border-left: var(--border-width-thick) solid var(--cobalt);
}

.auth-profile-slot.faction-viridian {
  border-left: var(--border-width-thick) solid var(--viridian);
}

.auth-profile-slot.empty {
  border-style: dashed;
  justify-content: center;
}

.auth-profile-slot.empty:hover {
  border-color: var(--text-muted);
}

/* Profile slot avatar */
.profile-slot-avatar {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  -webkit-clip-path: var(--clip-rounded-8);
  clip-path: var(--clip-rounded-8);
  background-size: cover;
  background-position: center;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.profile-slot-avatar.empty {
  background: var(--bg-highlight);
}

/* Profile slot content */
.profile-slot-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.profile-slot-name {
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  color: var(--text-primary);
}

.profile-slot-details {
  display: flex;
  gap: var(--space-sm);
  font-family: var(--font-small);
  font-size: var(--font-size-small);
  color: var(--text-muted);
}

.profile-slot-actions {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.profile-slot-play {
  padding: var(--space-xs) var(--space-lg);
  background: rgba(34, 197, 94, 0.12);
  border: var(--border-width) solid rgba(34, 197, 94, 0.4);
  color: var(--success);
  font-family: var(--font-small);
  font-size: var(--font-size-small);
  cursor: var(--cursor-pointer);
  transition: background 0.1s, border-color 0.1s;
}

.profile-slot-play:hover {
  background: rgba(34, 197, 94, 0.2);
  border-color: var(--success);
}

.profile-slot-edit {
  padding: var(--space-xs) var(--space-sm);
  background: transparent;
  border: var(--border-width) solid var(--border-dark);
  color: var(--text-muted);
  font-family: var(--font-small);
  font-size: var(--font-size-small);
  cursor: var(--cursor-pointer);
  transition: all 0.1s;
}

.profile-slot-edit:hover {
  border-color: var(--text-muted);
  color: var(--text-secondary);
}

.profile-slot-delete {
  padding: var(--space-xs) var(--space-sm);
  background: transparent;
  border: var(--border-width) solid rgba(239, 68, 68, 0.2);
  color: rgba(239, 68, 68, 0.4);
  font-family: var(--font-small);
  font-size: var(--font-size-small);
  cursor: var(--cursor-pointer);
  transition: all 0.1s;
}

.profile-slot-delete:hover {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.4);
  color: var(--danger);
}

/* Empty slot */
.profile-slot-empty {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: var(--font-size-body);
}

/* Locked slot (guest users, slots 2-3) */
.auth-profile-slot.locked {
  border-style: dashed;
  border-color: var(--border-dark);
  justify-content: center;
  opacity: 0.45;
}

.auth-profile-slot.locked:hover {
  border-color: var(--text-muted);
  opacity: 0.7;
}

.profile-slot-locked {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-family: var(--font-small);
  font-size: var(--font-size-small);
}

.profile-slot-lock {
  font-size: var(--font-size-body);
  line-height: 1;
}

.profile-slot-plus {
  font-size: var(--font-size-header);
  line-height: 1;
}

/* ========================
   AVATAR UPLOAD
   ======================== */

.auth-avatar-section {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-sm) 0;
}

.auth-avatar-preview {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
  border: var(--border-width) solid var(--border-dark);
  -webkit-clip-path: var(--clip-rounded-16);
  clip-path: var(--clip-rounded-16);
  background-size: cover;
  background-position: center;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.auth-avatar-preview.empty {
  background-color: var(--bg-panel-light);
}

.auth-avatar-upload-btn {
  flex: 1;
}

/* Create Profile button — cyan accent override */
#auth-create-confirm {
  background: rgba(0, 255, 255, 0.12);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

#auth-create-confirm:hover:not(:disabled) {
  background: rgba(0, 255, 255, 0.22);
}

/* ========================
   FACTION BUTTONS (CREATE)
   ======================== */

.auth-faction-prompt {
  font-family: var(--font-small);
  font-size: var(--font-size-small);
  color: var(--text-muted);
  letter-spacing: 2px;
  text-align: center;
  margin-top: var(--space-xs);
}

.auth-factions {
  display: flex;
  gap: var(--space-sm);
}

.auth-factions .faction-btn {
  flex: 1;
  padding: var(--space-md) var(--space-sm);
  background: var(--bg-panel-light);
  border: var(--border-width) solid var(--border-dark);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  cursor: var(--cursor-pointer);
  transition: background 0.1s, border-color 0.1s, color 0.1s;
}

.auth-factions .faction-btn:hover:not(:disabled) {
  background: var(--bg-highlight);
}

.auth-factions .faction-btn:disabled {
  opacity: 0.2;
  cursor: var(--cursor-pointer);
}

.auth-factions .faction-btn.faction-used {
  text-decoration: line-through;
}

/* Faction selection states */
.auth-factions .faction-btn[data-faction="rust"].selected {
  background: rgba(204, 68, 68, 0.15);
  border-color: var(--rust);
  color: var(--rust-light);
}

.auth-factions .faction-btn[data-faction="cobalt"].selected {
  background: rgba(59, 130, 246, 0.15);
  border-color: var(--cobalt);
  color: var(--cobalt-light);
}

.auth-factions .faction-btn[data-faction="viridian"].selected {
  background: rgba(74, 222, 128, 0.15);
  border-color: var(--viridian);
  color: var(--viridian-light);
}

/* ========================
   LOADING OVERLAY
   ======================== */

.auth-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  background: var(--bg-panel);
  z-index: 2;
}

.auth-loading.hidden {
  display: none;
}

.auth-loading-spinner {
  width: 24px;
  height: 24px;
  border: var(--border-width) solid var(--border-dark);
  border-top-color: var(--text-muted);
  animation: auth-spin 0.8s steps(8) infinite;
}

@keyframes auth-spin {
  to { transform: rotate(360deg); }
}

.auth-loading-text {
  font-family: var(--font-small);
  font-size: var(--font-size-small);
  color: var(--text-muted);
  letter-spacing: 2px;
}

/* ========================
   CONFIRMATION DIALOG
   ======================== */

.auth-confirm-dialog {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  padding: var(--space-3xl) var(--space-2xl);
  background: rgba(26, 26, 26, 0.95);
  z-index: 3;
}

.auth-confirm-dialog.hidden {
  display: none;
}

.auth-confirm-message {
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  color: var(--text-primary);
  text-align: center;
  line-height: 1.5;
}

.auth-confirm-actions {
  display: flex;
  gap: var(--space-sm);
  width: 100%;
}

.auth-confirm-actions .auth-btn {
  flex: 1;
}

/* Danger button variant */
.auth-btn-danger {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--danger);
  color: var(--danger);
}

.auth-btn-danger:hover:not(:disabled) {
  background: rgba(239, 68, 68, 0.25);
}