/* ===== 顶栏用户区 ===== */
.header-auth {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0f172a;
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-name {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (max-width: 768px) {
  .user-name {
    display: none;
  }
}

/* ===== 工作区锁定遮罩 ===== */
.workspace {
  position: relative;
}

.workspace.is-locked .card {
  pointer-events: none;
  user-select: none;
  filter: blur(1px);
  opacity: 0.55;
}

.workspace.is-locked .card * {
  pointer-events: none;
}

.lock-overlay {
  display: none;
  position: absolute;
  inset: 0;
  z-index: 10;
  align-items: center;
  justify-content: center;
  padding: 24px;
  pointer-events: none;
}

.workspace.is-locked .lock-overlay {
  display: flex;
  pointer-events: auto;
}

.lock-card {
  max-width: 440px;
  width: 100%;
  padding: 28px 26px 24px;
  text-align: center;
  background: rgba(15, 23, 42, 0.97);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: var(--radius);
  box-shadow: var(--shadow), 0 0 40px rgba(56, 189, 248, 0.08);
  backdrop-filter: blur(20px);
  pointer-events: auto;
}

.lock-card-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  margin-bottom: 14px;
  letter-spacing: 0.04em;
}

.lock-icon {
  font-size: 2.25rem;
  margin-bottom: 10px;
  opacity: 0.9;
}

.lock-card h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.lock-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 18px;
}

.lock-features {
  list-style: none;
  text-align: left;
  margin-bottom: 20px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid var(--border);
}

.lock-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 6px 0;
}

.lock-features li span:first-child {
  color: var(--success);
  font-weight: 700;
  font-size: 0.9rem;
}

.lock-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.lock-actions .btn {
  min-width: 120px;
}

.lock-footnote {
  margin-top: 16px;
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.5;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
}

/* ===== 未登录全局提示 ===== */
.guest-only {
  display: none;
}

body:not(.is-guest) .guest-only {
  display: none !important;
}

body.is-guest .guest-banner {
  display: flex;
}

body.is-guest .hero-guest-cta {
  display: flex;
}

body.is-guest .card-guest-tip {
  display: flex;
}

body.is-guest .guest-faq {
  display: block;
}

body.is-guest .preview-guest {
  display: block;
}

/* Hero 访客 CTA */
.hero-guest-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 22px;
}

body.is-guest .hero-badge {
  color: #fbbf24;
  background: rgba(251, 191, 36, 0.12);
  border-color: rgba(251, 191, 36, 0.25);
}

body.is-guest .hero-badge::before {
  background: #fbbf24;
  box-shadow: 0 0 8px #fbbf24;
}

/* 顶部提示条 */
.guest-banner {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: var(--max-w);
  margin: 0 auto 28px;
  padding: 16px 20px;
  border-radius: var(--radius);
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.22);
  box-shadow: 0 4px 24px rgba(56, 189, 248, 0.06);
}

.guest-banner-icon {
  flex-shrink: 0;
  font-size: 1.6rem;
  line-height: 1;
}

.guest-banner-body {
  flex: 1;
  min-width: 0;
}

.guest-banner-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text);
}

.guest-banner-text {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.guest-banner-btn {
  flex-shrink: 0;
}

@media (max-width: 600px) {
  .guest-banner {
    flex-wrap: wrap;
    padding: 14px 16px;
  }

  .guest-banner-btn {
    width: 100%;
  }
}

/* 卡片内提示 */
.card-guest-tip {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 12px;
  margin-bottom: 18px;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.45;
  border-radius: var(--radius-sm);
  background: rgba(251, 191, 36, 0.08);
  border: 1px solid rgba(251, 191, 36, 0.2);
}

.card-guest-tip-icon {
  flex-shrink: 0;
}

/* 预览区访客态 */
.preview-guest {
  text-align: center;
  padding: 8px 0 4px;
}

.preview-guest-icon {
  font-size: 2rem;
  margin-bottom: 10px;
  opacity: 0.85;
}

.preview-guest-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text-muted);
}

.preview-guest-list {
  list-style: none;
  text-align: left;
  max-width: 280px;
  margin: 0 auto 18px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: rgba(30, 41, 59, 0.45);
  border: 1px solid var(--border);
}

.preview-guest-list li {
  font-size: 0.8rem;
  color: var(--text-dim);
  padding: 5px 0 5px 14px;
  position: relative;
  line-height: 1.45;
}

.preview-guest-list li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}

.preview-guest-btn {
  margin-top: 4px;
}

body.is-guest .preview-empty {
  border-style: solid;
  border-color: rgba(251, 191, 36, 0.15);
  background: rgba(251, 191, 36, 0.04);
}

body.is-guest .preview-empty-default {
  display: none;
}

/* 常见问题 */
.guest-faq {
  max-width: var(--max-w);
  margin: 40px auto 0;
  padding: 0 24px;
}

.guest-faq-title {
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: 20px;
  color: var(--text-muted);
}

.guest-faq-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.guest-faq-item {
  padding: 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.5);
}

.guest-faq-item h3 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.guest-faq-item p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.55;
}

@media (max-width: 768px) {
  .guest-faq-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== 认证弹窗 ===== */
.auth-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.auth-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.auth-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 310;
  width: calc(100% - 32px);
  max-width: 480px;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  transform: translate(-50%, -50%) scale(0.95);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  scrollbar-width: thin;
  scrollbar-color: rgba(148, 163, 184, 0.3) transparent;
}

.auth-modal.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

.auth-modal-inner {
  background: rgba(15, 23, 42, 0.96);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  overflow: hidden;
  box-shadow: 0 32px 64px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(56, 189, 248, 0.06);
  backdrop-filter: blur(20px);
}

/* ----- 顶部介绍区 ----- */
.auth-intro {
  position: relative;
  padding: 24px 24px 20px;
  background:
    linear-gradient(135deg, rgba(56, 189, 248, 0.12) 0%, rgba(129, 140, 248, 0.08) 50%, transparent 100%),
    rgba(30, 41, 59, 0.4);
  border-bottom: 1px solid var(--border);
}

.auth-intro::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.15), transparent 70%);
  pointer-events: none;
}

.auth-close-float {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
}

.auth-intro-brand {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
  padding-right: 36px;
}

.auth-intro-logo {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: 0 6px 20px var(--accent-glow);
}

.auth-intro-logo--image {
  padding: 4px;
  background: rgba(15, 23, 42, 0.4);
  overflow: hidden;
}

.auth-intro-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.auth-modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
  line-height: 1.3;
}

.auth-modal-desc {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.auth-highlights {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.auth-highlights li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.45;
  padding: 8px 10px;
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(148, 163, 184, 0.08);
}

.auth-highlight-icon {
  flex-shrink: 0;
  font-size: 1rem;
  line-height: 1.4;
}

.auth-highlights strong {
  color: var(--text);
  font-weight: 600;
  margin-right: 4px;
}

/* ----- 表单区 ----- */
.auth-body {
  padding: 22px 24px 8px;
}

.auth-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  padding: 4px;
  background: rgba(30, 41, 59, 0.5);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.auth-tab {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 8px;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
}

.auth-tab:hover {
  color: var(--text);
}

.auth-tab.is-active {
  color: var(--text);
  background: rgba(56, 189, 248, 0.15);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

.auth-panel .form-group {
  margin-bottom: 16px;
}

.auth-panel .form-actions {
  margin-top: 4px;
  padding-top: 0;
  border-top: none;
}

.auth-panel .btn-primary {
  width: 100%;
}

.auth-panel .btn-primary.is-loading {
  pointer-events: none;
  opacity: 0.88;
}

.auth-panel .btn-primary .btn-spinner {
  vertical-align: middle;
  margin-right: 2px;
}

.auth-close {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 8px;
  background: rgba(30, 41, 59, 0.7);
  color: var(--text-muted);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.auth-close:hover {
  background: rgba(30, 41, 59, 0.95);
  color: var(--text);
}

/* ----- 底部介绍区 ----- */
.auth-footer {
  padding: 18px 24px 22px;
  background: rgba(30, 41, 59, 0.35);
  border-top: 1px solid var(--border);
}

.auth-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px 4px;
  margin-bottom: 14px;
}

.auth-step {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
}

.auth-step-num {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: rgba(56, 189, 248, 0.2);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-step-text {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.auth-step-arrow {
  font-size: 0.75rem;
  color: var(--text-dim);
  opacity: 0.7;
}

.auth-tip {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.5;
  text-align: left;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(56, 189, 248, 0.06);
  border: 1px dashed rgba(56, 189, 248, 0.18);
}

.auth-tip-icon {
  flex-shrink: 0;
  font-size: 0.9rem;
}

body.modal-open {
  overflow: hidden;
}

.form-error {
  font-size: 0.8rem;
  color: #f87171;
  margin-top: 6px;
  min-height: 1.2em;
}

@media (max-width: 400px) {
  .auth-intro {
    padding: 20px 18px 16px;
  }

  .auth-body {
    padding: 18px 18px 6px;
  }

  .auth-footer {
    padding: 14px 18px 18px;
  }

  .auth-step-arrow {
    display: none;
  }

  .auth-steps {
    flex-direction: column;
    align-items: stretch;
  }

  .auth-step {
    justify-content: center;
  }
}