/* ==========================================================================
   ZGQ Blog Vault & Access Control Styles (Material Design 3 Theme Integrated)
   ========================================================================== */

/* Vault Lock Screen Container - Spans full width of article, no outer black void */
.vault-lock-screen {
  position: relative;
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* MD3 Elevated Vault Challenge Card - Fills content width seamlessly */
.vault-card {
  position: relative;
  width: 100%;
  max-width: 100%;
  margin: 8px 0 32px 0;
  background: color-mix(in srgb, var(--md-sys-color-surface-container) 85%, var(--md-sys-color-surface-container-low));
  border-radius: var(--shape-xl, 28px);
  padding: 32px 28px;
  box-shadow: var(--elev-1);
  border: 1px solid color-mix(in srgb, var(--md-sys-color-primary) 24%, var(--md-sys-color-outline-variant));
  box-sizing: border-box;
  animation: vaultFadeUp 0.4s cubic-bezier(0.1, 0.9, 0.2, 1) both;
  transition: background var(--dur-short4, 200ms),
              border-color var(--dur-short4, 200ms),
              box-shadow var(--dur-short4, 200ms);
  overflow: hidden;
}

/* Elegant theme accent line on card top */
.vault-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--md-sys-color-primary), transparent);
  pointer-events: none;
}

.vault-card:hover {
  border-color: color-mix(in srgb, var(--md-sys-color-primary) 45%, var(--md-sys-color-outline-variant));
  box-shadow: 0 4px 20px color-mix(in srgb, var(--md-sys-color-primary) 12%, transparent), var(--elev-2);
}

@keyframes vaultFadeUp {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.99);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.vault-card.shake {
  animation: vaultShake 0.4s ease-in-out;
}

@keyframes vaultShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

/* Header Area */
.vault-card-header {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 24px;
}

.vault-lock-icon {
  font-size: 36px !important;
  color: var(--md-sys-color-on-primary-container);
  background: var(--md-sys-color-primary-container);
  padding: 14px;
  border-radius: var(--shape-large, 16px);
  border: 1.5px solid color-mix(in srgb, var(--md-sys-color-primary) 35%, transparent);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--md-sys-color-primary) 22%, transparent);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.vault-title-group {
  flex: 1;
  min-width: 0;
}

.vault-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--shape-full, 9999px);
  background: color-mix(in srgb, var(--md-sys-color-primary) 14%, transparent);
  color: var(--md-sys-color-primary);
  border: 1px solid color-mix(in srgb, var(--md-sys-color-primary) 30%, transparent);
  margin-bottom: 8px;
}

.vault-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--md-sys-color-primary);
  box-shadow: 0 0 6px var(--md-sys-color-primary);
}

.vault-title {
  margin: 0 0 6px 0;
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--md-sys-color-on-surface);
  letter-spacing: -0.01em;
}

.vault-subtitle {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.55;
}

/* Notice Box with Theme Accent */
.vault-notice-box {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: color-mix(in srgb, var(--md-sys-color-primary-container) 30%, var(--md-sys-color-surface-container-low));
  border-left: 4px solid var(--md-sys-color-primary);
  border-top: 1px solid color-mix(in srgb, var(--md-sys-color-primary) 22%, transparent);
  border-right: 1px solid color-mix(in srgb, var(--md-sys-color-primary) 22%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--md-sys-color-primary) 22%, transparent);
  padding: 14px 18px;
  border-radius: var(--shape-medium, 12px);
  margin-bottom: 24px;
  font-size: 0.9rem;
  color: var(--md-sys-color-on-surface);
  line-height: 1.6;
}

.vault-notice-box .material-symbols-outlined {
  color: var(--md-sys-color-primary);
  font-size: 22px;
  margin-top: 2px;
  flex-shrink: 0;
}

/* Question List & Item Styling */
.vault-question-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
  max-height: 52vh;
  overflow-y: auto;
  padding-right: 6px;
  scroll-behavior: smooth;
}

.vault-question-list::-webkit-scrollbar {
  width: 6px;
}

.vault-question-list::-webkit-scrollbar-track {
  background: transparent;
}

.vault-question-list::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--md-sys-color-primary) 30%, var(--md-sys-color-outline-variant));
  border-radius: 4px;
}

.vault-question-list::-webkit-scrollbar-thumb:hover {
  background: var(--md-sys-color-primary);
}

.vault-q-item {
  background: var(--md-sys-color-surface-container);
  border: 1px solid color-mix(in srgb, var(--md-sys-color-primary) 16%, var(--md-sys-color-outline-variant));
  border-radius: var(--shape-large, 16px);
  padding: 16px 20px;
  transition: border-color var(--dur-short4, 200ms),
              box-shadow var(--dur-short4, 200ms),
              background var(--dur-short4, 200ms);
}

.vault-q-item:hover {
  border-color: color-mix(in srgb, var(--md-sys-color-primary) 45%, var(--md-sys-color-outline-variant));
}

.vault-q-item:focus-within {
  border-color: var(--md-sys-color-primary);
  box-shadow: 0 0 0 1px var(--md-sys-color-primary), 0 2px 10px color-mix(in srgb, var(--md-sys-color-primary) 18%, transparent);
}

.vault-q-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.vault-q-num {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--md-sys-color-primary);
  background: color-mix(in srgb, var(--md-sys-color-primary) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--md-sys-color-primary) 28%, transparent);
  padding: 2px 8px;
  border-radius: var(--shape-xs, 4px);
}

.vault-q-tag {
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
  background: color-mix(in srgb, var(--md-sys-color-primary) 6%, var(--md-sys-color-surface-container-high));
  border: 1px solid color-mix(in srgb, var(--md-sys-color-primary) 14%, transparent);
  padding: 2px 8px;
  border-radius: var(--shape-xs, 4px);
}

.vault-q-desc {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--md-sys-color-on-surface);
  margin-bottom: 12px;
}

.vault-q-desc code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85em;
  padding: 2px 6px;
  background: color-mix(in srgb, var(--md-sys-color-primary) 10%, var(--md-sys-color-surface-container-highest));
  color: var(--md-sys-color-primary);
  border: 1px solid color-mix(in srgb, var(--md-sys-color-primary) 22%, transparent);
  border-radius: 4px;
}

/* Material 3 Outlined Text Field Styling Integration */
.vault-q-input {
  width: 100%;
  box-sizing: border-box;
  --md-outlined-text-field-container-shape: 12px;
  --md-outlined-text-field-outline-color: color-mix(in srgb, var(--md-sys-color-primary) 25%, var(--md-sys-color-outline-variant));
  --md-outlined-text-field-hover-outline-color: var(--md-sys-color-primary);
  --md-outlined-text-field-focus-outline-color: var(--md-sys-color-primary);
  --md-outlined-text-field-label-text-color: var(--md-sys-color-on-surface-variant);
  --md-outlined-text-field-focus-label-text-color: var(--md-sys-color-primary);
  --md-outlined-text-field-input-text-color: var(--md-sys-color-on-surface);
  --md-outlined-text-field-caret-color: var(--md-sys-color-primary);
  --md-sys-color-primary: var(--md-sys-color-primary);
}

/* Cloudflare Turnstile Wrapper */
.vault-turnstile-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 18px 0 10px 0;
  min-height: 65px;
}

/* Error Banner */
.vault-error-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--md-sys-color-error-container);
  border: 1px solid color-mix(in srgb, var(--md-sys-color-error) 35%, transparent);
  color: var(--md-sys-color-on-error-container);
  border-radius: var(--shape-medium, 12px);
  padding: 12px 18px;
  margin-top: 14px;
  font-size: 0.9rem;
  line-height: 1.5;
  animation: fadeIn 0.3s ease;
}

.vault-error-banner .material-symbols-outlined {
  font-size: 20px;
  color: var(--md-sys-color-error);
  flex-shrink: 0;
}

/* Actions Footer */
.vault-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  border-top: 1px solid color-mix(in srgb, var(--md-sys-color-outline-variant) 30%, transparent);
  padding-top: 20px;
}

.vault-actions .action-btn.btn-tonal.vault-bot-link {
  text-decoration: none;
  border: 1px solid color-mix(in srgb, var(--md-sys-color-primary) 20%, transparent);
  transition: all var(--dur-short4, 200ms) var(--motion-standard);
}

.vault-actions .action-btn.btn-tonal.vault-bot-link:hover {
  border-color: var(--md-sys-color-primary);
  background: color-mix(in srgb, var(--md-sys-color-primary) 15%, var(--md-sys-color-secondary-container));
  box-shadow: var(--elev-1);
}

.vault-actions .action-btn.btn-filled.vault-submit-btn {
  background: var(--md-sys-color-primary) !important;
  color: var(--md-sys-color-on-primary) !important;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 10px 24px;
  border-radius: var(--shape-full, 9999px);
  border: none;
  cursor: pointer;
  box-shadow: 0 2px 8px color-mix(in srgb, var(--md-sys-color-primary) 30%, transparent);
  transition: all var(--dur-short4, 200ms) var(--motion-standard);
}

.vault-actions .action-btn.btn-filled.vault-submit-btn:hover {
  box-shadow: var(--elev-2), 0 4px 16px color-mix(in srgb, var(--md-sys-color-primary) 40%, transparent);
  filter: brightness(1.05);
}

.vault-actions .action-btn.btn-filled.vault-submit-btn:active {
  transform: scale(0.97);
}

/* Decrypted State Animations */
.vault-unlocked-content {
  animation: vaultReveal 0.5s cubic-bezier(0.1, 0.9, 0.2, 1) both;
}

@keyframes vaultReveal {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* About Page Status Badge */
.vault-status-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-radius: var(--shape-large, 20px);
  margin-bottom: 24px;
  border: 1px solid color-mix(in srgb, var(--md-sys-color-primary) 20%, var(--md-sys-color-outline-variant));
  background: var(--md-sys-color-surface-container);
  transition: all 0.3s ease;
}

.vault-status-card.unlocked {
  background: color-mix(in srgb, var(--md-sys-color-primary-container) 35%, transparent);
  border-color: color-mix(in srgb, var(--md-sys-color-primary) 45%, transparent);
  box-shadow: var(--elev-1);
}

.vault-status-card .status-icon {
  font-size: 26px;
  color: var(--md-sys-color-on-primary-container);
  background: var(--md-sys-color-primary-container);
  border: 1px solid color-mix(in srgb, var(--md-sys-color-primary) 30%, transparent);
  padding: 10px;
  border-radius: var(--shape-medium, 14px);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.vault-status-card .status-info {
  flex: 1;
}

.vault-status-card .status-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--md-sys-color-on-surface);
  margin-bottom: 2px;
}

.vault-status-card .status-desc {
  font-size: 0.85rem;
  color: var(--md-sys-color-on-surface-variant);
  margin: 0;
  line-height: 1.5;
}

/* Mobile responsiveness */
@media (max-width: 680px) {
  .vault-card {
    padding: 24px 16px;
    border-radius: var(--shape-large, 18px);
  }
  .vault-card-header {
    flex-direction: column;
    gap: 14px;
  }
  .vault-actions {
    flex-direction: column-reverse;
    align-items: stretch;
  }
  .vault-actions .action-btn {
    width: 100%;
    justify-content: center;
  }
}