/* =========================================================
   auth.css — Login modal, profile completion, user menu
   Claude/Anthropic design system
   ========================================================= */

/* ---- Modal Overlay ---- */
.auth-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(20, 20, 19, 0.32);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}
.auth-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

/* ---- Modal Card ---- */
.auth-modal {
  position: relative;
  width: 480px;
  max-width: calc(100vw - 32px);
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  background: var(--yuyu-cream-soft, #faf9f5);
  border: 1px solid #f0eee6;
  border-radius: 16px;
  box-shadow: 0 0 0 1px rgba(20, 20, 19, 0.08), 0 8px 32px rgba(0, 0, 0, 0.08);
  padding: 36px 32px 32px;
  transform: translateY(16px) scale(0.97);
  transition: transform 0.3s ease;
}
.auth-overlay.is-visible .auth-modal {
  transform: translateY(0) scale(1);
}

.auth-modal__close {
  position: absolute;
  top: 16px;
  right: 18px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  line-height: 1;
  color: var(--yuyu-ink-muted, #87867f);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.auth-modal__close:hover {
  color: var(--yuyu-ink, #141413);
  background: var(--yuyu-cream-deep, #e8e6dc);
}

.auth-modal__title {
  font-family: var(--yuyu-font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--yuyu-ink, #141413);
  text-align: center;
  margin: 0 0 24px;
  line-height: 1.20;
}

/* ---- Tabs ---- */
.auth-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  justify-content: center;
}
.auth-tab {
  flex: 1;
  padding: 10px 12px;
  font-size: 14px;
  font-family: var(--yuyu-font-body);
  font-weight: 500;
  color: var(--yuyu-ink, #141413);
  background: transparent;
  border: 1px solid #e8e6dc;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
}
.auth-tab:hover {
  background: var(--yuyu-cream-deep, #e8e6dc);
}
.auth-tab.is-active {
  color: #faf9f5;
  background: var(--yuyu-terracotta, #c96442);
  border-color: var(--yuyu-terracotta, #c96442);
  box-shadow: 0 0 0 1px var(--yuyu-terracotta, #c96442);
}

/* ---- Form Elements ---- */
.auth-field {
  margin-bottom: 18px;
}
.auth-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--yuyu-ink-soft, #5e5d59);
  margin-bottom: 6px;
  letter-spacing: 0.12px;
}
.auth-input {
  width: 100%;
  box-sizing: border-box;
  min-height: 48px;
  padding: 12px 16px;
  font-size: 16px;
  font-family: var(--yuyu-font-body);
  color: var(--yuyu-ink, #141413);
  background: #fff;
  border: 1px solid #e8e6dc;
  border-radius: 12px;
  outline: none;
  transition: all 0.15s ease;
}
.auth-input:focus {
  box-shadow: 0 0 0 3px rgba(56, 152, 236, 0.2);
  border-color: #3898ec;
}
.auth-input::placeholder {
  color: var(--yuyu-ink-muted, #87867f);
  opacity: 0.7;
}
.auth-input.has-error {
  border-color: var(--error, #b53333);
  box-shadow: 0 0 0 1px var(--error, #b53333);
}

/* Input + button inline row */
.auth-input-row {
  display: flex;
  gap: 10px;
}
.auth-input-row .auth-input {
  flex: 1;
}

/* ---- Buttons ---- */
.auth-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 48px;
  padding: 12px 24px;
  font-size: 16px;
  font-family: var(--yuyu-font-body);
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  border: 1px solid #e8e6dc;
}
.auth-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}
.auth-btn--primary {
  color: #faf9f5;
  background: var(--yuyu-ink, #141413);
  border-color: var(--yuyu-ink, #141413);
  width: 100%;
}
.auth-btn--primary:not(:disabled):hover {
  box-shadow: 0 0 0 1px rgba(20, 20, 19, 0.16), 0 4px 16px rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
}
.auth-btn--outline {
  color: var(--yuyu-ink, #141413);
  background: #fff;
}
.auth-btn--outline:not(:disabled):hover {
  background: var(--yuyu-cream-soft, #faf9f5);
  box-shadow: 0 0 0 1px #d1cfc5;
}
.auth-btn--send {
  min-width: 110px;
  font-size: 14px;
  padding: 10px 14px;
}

/* ---- CAPTCHA Slider ---- */
.auth-captcha {
  margin-bottom: 20px;
}
.auth-captcha__label {
  font-size: 12px;
  color: var(--yuyu-ink-muted, #87867f);
  margin-bottom: 10px;
  text-align: center;
}
.auth-captcha__track {
  position: relative;
  height: 44px;
  background: var(--yuyu-cream-deep, #e8e6dc);
  border: 1px solid #e8e6dc;
  border-radius: 8px;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}
.auth-captcha__fill {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0;
  background: rgba(20, 20, 19, 0.06);
  transition: width 0.05s linear;
  pointer-events: none;
}
.auth-captcha__handle {
  position: absolute;
  top: 2px;
  left: 0;
  width: 44px;
  height: calc(100% - 4px);
  background: #fff;
  border: 1px solid #e8e6dc;
  border-radius: 8px;
  cursor: grab;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: box-shadow 0.15s ease;
}
.auth-captcha__handle:active {
  cursor: grabbing;
  box-shadow: 0 0 0 1px rgba(20, 20, 19, 0.12);
}
.auth-captcha__handle svg {
  width: 20px;
  height: 20px;
  fill: var(--yuyu-ink, #141413);
}
.auth-captcha__hint {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: 12px;
  color: var(--yuyu-ink-muted, #87867f);
  pointer-events: none;
  opacity: 0.7;
}
.auth-captcha.is-solved .auth-captcha__track {
  background: rgba(201, 100, 66, 0.08);
  border-color: rgba(201, 100, 66, 0.2);
}
.auth-captcha.is-solved .auth-captcha__hint {
  color: var(--yuyu-ink, #141413);
  font-weight: 500;
  opacity: 1;
}

/* ---- Error message ---- */
.auth-error {
  color: var(--error, #b53333);
  font-size: 14px;
  margin-top: 6px;
  min-height: 1.2em;
}
.auth-error:empty { display: none; }

/* ---- WeChat QR ---- */
.auth-wechat-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 20px 0;
}
.auth-wechat-qr__box {
  width: 200px;
  height: 200px;
  border: 1px solid #f0eee6;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  box-shadow: 0 0 0 1px rgba(20, 20, 19, 0.08);
}
.auth-wechat-qr__placeholder {
  font-size: 14px;
  color: var(--yuyu-ink-muted, #87867f);
  text-align: center;
  padding: 16px;
}
.auth-wechat-qr__status {
  font-size: 14px;
  color: var(--yuyu-ink-soft, #5e5d59);
}

/* ---- Avatar Category Tabs ---- */
.auth-avatar-cats {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.auth-avatar-cat {
  padding: 5px 12px;
  font-size: 12px;
  font-family: var(--yuyu-font-body);
  font-weight: 500;
  color: var(--yuyu-ink-soft, #5e5d59);
  background: transparent;
  border: 1px solid #e8e6dc;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.auth-avatar-cat:hover {
  background: var(--yuyu-cream-deep, #e8e6dc);
}
.auth-avatar-cat.is-active {
  color: #faf9f5;
  background: var(--yuyu-ink, #141413);
  border-color: var(--yuyu-ink, #141413);
}

/* ---- Avatar Grid ---- */
.auth-avatars-wrap {
  max-height: 240px;
  overflow-y: auto;
  margin-bottom: 16px;
  border: 1px solid #f0eee6;
  border-radius: 8px;
  padding: 10px;
}
.auth-avatars-wrap::-webkit-scrollbar { width: 6px; }
.auth-avatars-wrap::-webkit-scrollbar-track { background: transparent; }
.auth-avatars-wrap::-webkit-scrollbar-thumb { background: rgba(20, 20, 19, 0.12); border-radius: 3px; }
.auth-avatars {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 8px;
}
.auth-avatar-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--yuyu-cream, #f5f4ed);
}
.auth-avatar-item:hover {
  border-color: var(--yuyu-ink-muted, #87867f);
  transform: scale(1.1);
}
.auth-avatar-item.is-selected {
  border-color: var(--yuyu-terracotta, #c96442);
  border-width: 2.5px;
  box-shadow: 0 0 0 2px rgba(201, 100, 66, 0.2);
  transform: scale(1.1);
}
.auth-avatar-item svg {
  width: 100%;
  height: 100%;
}

/* Upload avatar button */
.auth-avatar-upload {
  border: 2px dashed var(--yuyu-ink-muted, #87867f);
  background: transparent;
  font-size: 10px;
  color: var(--yuyu-ink-muted, #87867f);
  flex-direction: column;
  gap: 4px;
}
.auth-avatar-upload:hover {
  border-color: var(--yuyu-ink, #141413);
  color: var(--yuyu-ink, #141413);
  border-style: solid;
}

/* ---- Profile Section ---- */
.auth-profile-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.auth-profile-preview__avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 1px solid #f0eee6;
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(20, 20, 19, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--yuyu-cream, #f5f4ed);
}
.auth-profile-preview__avatar svg,
.auth-profile-preview__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---- User Menu ---- */
.user-menu-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 4px;
  border-radius: 12px;
  transition: background 0.15s;
}
.user-menu-trigger:hover {
  background: rgba(20, 20, 19, 0.04);
}
.user-menu-trigger__avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid #f0eee6;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--yuyu-cream, #f5f4ed);
  flex-shrink: 0;
}
.user-menu-trigger__avatar svg,
.user-menu-trigger__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.user-menu-trigger__name {
  font-size: 14px;
  font-weight: 500;
  color: var(--yuyu-ink, #141413);
  max-width: 80px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Dropdown panel */
.user-menu-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  background: var(--yuyu-cream-soft, #faf9f5);
  border: 1px solid #f0eee6;
  border-radius: 12px;
  box-shadow: 0 0 0 1px rgba(20, 20, 19, 0.08), 0 8px 32px rgba(0, 0, 0, 0.08);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all 0.15s ease;
  z-index: 100;
}
.user-menu-dropdown.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.user-menu-dropdown__header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid #f0eee6;
  margin-bottom: 4px;
}
.user-menu-dropdown__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid #f0eee6;
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--yuyu-cream, #f5f4ed);
}
.user-menu-dropdown__avatar svg,
.user-menu-dropdown__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.user-menu-dropdown__name {
  font-weight: 500;
  font-size: 15px;
  color: var(--yuyu-ink, #141413);
}
.user-menu-dropdown__item {
  display: block;
  width: 100%;
  padding: 10px 16px;
  font-size: 14px;
  font-family: var(--yuyu-font-body);
  color: var(--yuyu-ink-soft, #5e5d59);
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
  transition: background 0.15s;
}
.user-menu-dropdown__item:hover {
  background: var(--yuyu-cream-deep, #e8e6dc);
  color: var(--yuyu-ink, #141413);
}
.user-menu-dropdown__item--danger {
  color: var(--error, #b53333);
}
.user-menu-dropdown__item--danger:hover {
  background: rgba(181, 51, 51, 0.06);
  color: var(--error, #b53333);
}

/* ---- Auth Gate ---- */
.auth-gate {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  background: rgba(245, 244, 237, 0.92);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.auth-gate__text {
  font-family: var(--yuyu-font-display);
  font-size: 20px;
  font-weight: 500;
  color: var(--yuyu-ink, #141413);
}

/* ---- Countdown ---- */
.auth-countdown {
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  color: var(--yuyu-ink-muted, #87867f);
}

/* ---- Responsive ---- */
@media (max-width: 480px) {
  .auth-modal {
    padding: 28px 20px 24px;
    border-radius: 12px;
  }
  .auth-avatars {
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
  }
  .auth-avatars-wrap {
    max-height: 200px;
  }
  .auth-wechat-qr__box {
    width: 160px;
    height: 160px;
  }
  .user-menu-trigger__name {
    display: none;
  }
}