/* ==============================================
   Auth Pages — login / register / account
   Shares design tokens with styles.css
   ============================================== */

.auth-wrapper {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--space-10) var(--space-4);
  background: var(--color-bg-primary);
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
}

.auth-card--wide {
  max-width: 720px;
}

.auth-header {
  text-align: center;
  margin-bottom: var(--space-6);
}

.auth-header h1 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-2) 0;
}

.auth-header p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin: 0;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.auth-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.auth-field label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.auth-field input[type="text"],
.auth-field input[type="email"],
.auth-field input[type="password"],
.auth-field select {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.auth-field input:focus,
.auth-field select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.auth-field input[aria-invalid="true"] {
  border-color: var(--color-error);
}

.auth-field .field-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.auth-field .field-error {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  min-height: 1em;
}

.auth-checkbox {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
}

.auth-checkbox input {
  width: 16px;
  height: 16px;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.auth-submit {
  background: var(--color-accent);
  color: #fff;
  border: none;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: background var(--transition-base), transform var(--transition-fast);
  font-family: inherit;
}

.auth-submit:hover:not(:disabled) {
  background: var(--color-accent-hover);
}

.auth-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.auth-alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  border: 1px solid transparent;
  display: none;
}

.auth-alert[data-visible="true"] {
  display: block;
}

.auth-alert--error {
  background: var(--color-error-bg);
  border-color: var(--color-error);
  color: var(--color-error);
}

.auth-alert--success {
  background: var(--color-success-bg);
  border-color: var(--color-success);
  color: var(--color-success);
}

.auth-alert--info {
  background: var(--color-accent-light);
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

.auth-links {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  font-size: var(--font-size-sm);
}

.auth-links a {
  color: var(--color-accent);
  text-decoration: none;
}

.auth-links a:hover {
  text-decoration: underline;
}

.auth-merge-box {
  background: var(--color-accent-light);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

/* =========== Account page sections =========== */
.account-layout {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.account-section {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.account-section h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-4) 0;
}

.account-section h3 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: var(--space-4) 0 var(--space-2) 0;
}

.account-meta {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--space-2) var(--space-4);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.account-meta dt {
  font-weight: var(--font-weight-medium);
}

.account-meta dd {
  margin: 0;
  color: var(--color-text-primary);
  word-break: break-word;
}

.account-section .auth-form {
  max-width: 420px;
}

.account-danger {
  border-color: var(--color-error);
}

.account-danger h2 {
  color: var(--color-error);
}

/* =========== Header auth pill =========== */
/* Layout override: make .header-end display its children inline. The
   original rule in styles.css only sets width, so the theme toggle
   and the auth nav would otherwise stack. The mobile breakpoint in
   styles.css hides .header-end entirely, so we scope this to the
   non-mobile size. */
@media (min-width: 769px) {
  .header-end {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-2);
  }
}

.header-auth {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.header-auth-link {
  color: var(--color-text-primary);
  background: transparent;
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.header-auth-link:hover {
  background: var(--color-bg-tertiary);
  border-color: var(--color-text-tertiary);
}

.header-auth-link--primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.header-auth-link--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.header-auth-avatar {
  position: relative;
}

.header-auth-avatar-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  padding: var(--space-1) var(--space-3) var(--space-1) var(--space-1);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--font-size-sm);
  transition: all var(--transition-base);
}

.header-auth-avatar-btn:hover {
  background: var(--color-bg-elevated);
}

.header-auth-avatar-circle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
}

.header-auth-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  padding: var(--space-2);
  display: none;
  z-index: 200;
}

.header-auth-menu[data-open="true"] {
  display: block;
}

.header-auth-menu a,
.header-auth-menu button {
  display: block;
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: none;
  color: var(--color-text-primary);
  text-align: left;
  font-size: var(--font-size-sm);
  font-family: inherit;
  text-decoration: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.header-auth-menu a:hover,
.header-auth-menu button:hover {
  background: var(--color-bg-tertiary);
}

.header-auth-menu-divider {
  height: 1px;
  background: var(--color-divider);
  margin: var(--space-2) 0;
}

.header-auth-menu-label {
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* =========== Light theme overrides =========== */
[data-theme="light"] .auth-wrapper,
[data-theme="light"] .auth-card,
[data-theme="light"] .account-section {
  /* variables handle this via token overrides in styles.css */
}

/* =========== Collection picker modal =========== */
.collection-picker {
  position: fixed;
  inset: 0;
  display: none;
  z-index: 1000;
}

.collection-picker[data-open="true"] {
  display: block;
}

.collection-picker-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(2px);
}

.collection-picker-card {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(480px, calc(100% - 32px));
  max-height: calc(100vh - 64px);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.collection-picker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-divider);
}

.collection-picker-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.collection-picker-close {
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.collection-picker-close:hover {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

.collection-picker-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-3) var(--space-4);
}

.collection-picker-alert {
  background: var(--color-error-bg);
  border: 1px solid var(--color-error);
  color: var(--color-error);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-3);
}

.collection-picker-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.collection-picker-row {
  margin: 0;
}

.collection-picker-loading {
  padding: var(--space-4);
  text-align: center;
  color: var(--color-text-secondary);
}

.collection-picker-empty {
  text-align: center;
  color: var(--color-text-secondary);
  padding: var(--space-6) var(--space-3);
  font-size: var(--font-size-sm);
}

.collection-picker-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.collection-picker-toggle:hover {
  background: var(--color-bg-tertiary);
  border-color: var(--color-border);
}

.collection-picker-toggle.is-member {
  background: var(--color-accent-light);
  border-color: var(--color-accent);
}

.collection-picker-checkmark {
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-accent);
  font-weight: bold;
  background: var(--color-bg-primary);
  flex-shrink: 0;
}

.collection-picker-toggle.is-member .collection-picker-checkmark {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.collection-picker-name {
  flex: 1;
  font-weight: var(--font-weight-medium);
}

.collection-picker-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.collection-picker-badge {
  padding: 2px 6px;
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: var(--font-weight-semibold);
  background: var(--color-success-bg);
  color: var(--color-success);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.collection-picker-footer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-divider);
  background: var(--color-bg-primary);
}

.collection-picker-create {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.collection-picker-input {
  flex: 1;
  min-width: 0;
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-family: inherit;
}

.collection-picker-input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.collection-picker-public {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
}

.collection-picker-public input {
  accent-color: var(--color-accent);
}

.collection-picker-create-btn {
  background: var(--color-accent);
  color: #fff;
  border: none;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  font-family: inherit;
  cursor: pointer;
}

.collection-picker-create-btn:hover:not(:disabled) {
  background: var(--color-accent-hover);
}

.collection-picker-create-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* =========== Collection list / detail pages =========== */
.collection-page {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
}

.collection-page-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.collection-page-cover {
  width: 160px;
  height: 90px;
  border-radius: var(--radius-lg);
  background: var(--color-bg-tertiary) center/cover no-repeat;
  flex-shrink: 0;
}

.collection-page-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-2) 0;
}

.collection-page-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-3) 0;
}

.collection-page-description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
}

.collection-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-4);
}

.collection-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.collection-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
}

.collection-card-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--color-bg-tertiary) center/cover no-repeat;
}

.collection-card-body {
  padding: var(--space-3) var(--space-4) var(--space-4);
}

.collection-card-name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-1) 0;
}

.collection-card-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

/* =========== Responsive =========== */
@media (max-width: 520px) {
  .auth-card {
    padding: var(--space-6);
  }
  .account-meta {
    grid-template-columns: 1fr;
  }
  .header-auth-link {
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
  }
}