/**
 * Modern Q&A Drawer - Premium glassmorphism design
 */

@import './design-system.css';

/* Backdrop overlay */
.qa-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: var(--z-overlay);
}

.qa-backdrop.visible {
  opacity: 1;
  visibility: visible;
}

/* Drawer container */
.qa-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(480px, 100%);
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
}

.qa-drawer.open {
  transform: translateX(0);
}

/* Drawer panel with premium glassmorphism */
.qa-drawer__panel {
  /* Multi-layer glass effect */
  background:
    linear-gradient(
      135deg,
      rgba(30, 30, 36, 0.95),
      rgba(20, 20, 25, 0.92)
    );
  backdrop-filter: blur(32px) saturate(180%);
  -webkit-backdrop-filter: blur(32px) saturate(180%);

  height: 100%;
  padding: 28px 24px 32px;
  display: flex;
  flex-direction: column;

  /* Gradient border */
  border-left: 1px solid;
  border-image: linear-gradient(
    180deg,
    rgba(99, 102, 241, 0.3),
    transparent,
    rgba(168, 85, 247, 0.3)
  ) 1;

  border-top-left-radius: var(--radius-xl);
  border-bottom-left-radius: var(--radius-xl);
  color: var(--text-primary);
  overflow: hidden;

  /* Premium shadow */
  box-shadow:
    -32px 0 64px rgba(0, 0, 0, 0.4),
    -16px 0 32px rgba(0, 0, 0, 0.24),
    inset 1px 0 0 rgba(255, 255, 255, 0.05);
}

/* Header */
.qa-drawer__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.qa-drawer__header h3 {
  font-size: 24px;
  font-weight: 700;
  margin: 0;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.qa-close-btn {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.1),
    rgba(255, 255, 255, 0.05)
  );
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  cursor: pointer;
  transition: all var(--transition-base);
}

.qa-close-btn:hover {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.15),
    rgba(255, 255, 255, 0.08)
  );
  border-color: rgba(239, 68, 68, 0.3);
  color: var(--danger-400);
  transform: rotate(90deg) scale(1.05);
}

/* Question form */
.qa-form {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.06),
    rgba(255, 255, 255, 0.03)
  );
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;

  /* Subtle inner glow */
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 4px 12px rgba(0, 0, 0, 0.08);
}

.qa-form textarea,
.qa-form input[type="text"] {
  resize: none;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.3);
  color: var(--text-primary);
  padding: 14px 16px;
  font-size: 15px;
  font-family: inherit;
  transition: all var(--transition-base);

  /* Subtle inner shadow */
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.2);
}

.qa-form textarea {
  min-height: 120px;
  line-height: 1.6;
}

.qa-form textarea:focus,
.qa-form input[type="text"]:focus {
  outline: none;
  border-color: rgba(99, 102, 241, 0.5);
  background: rgba(0, 0, 0, 0.4);
  box-shadow:
    inset 0 1px 3px rgba(0, 0, 0, 0.2),
    0 0 0 3px rgba(99, 102, 241, 0.1);
}

.qa-form-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 4px;
}

.qa-count {
  font-size: 13px;
  color: var(--text-tertiary);
  font-weight: 500;
}

.qa-submit {
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-full);
  color: white;
  padding: 12px 28px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow:
    0 4px 12px rgba(102, 126, 234, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.qa-submit:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
}

.qa-submit:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow:
    0 8px 20px rgba(102, 126, 234, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.qa-submit:not(:disabled):active {
  transform: translateY(0) scale(0.98);
}

/* Tabs */
.qa-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.qa-tabs::-webkit-scrollbar {
  height: 0;
}

.qa-tab {
  border: none;
  border-radius: var(--radius-full);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.08),
    rgba(255, 255, 255, 0.04)
  );
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.qa-tab::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.qa-tab:hover:not(.active) {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.12),
    rgba(255, 255, 255, 0.06)
  );
  color: var(--text-primary);
}

.qa-tab.active {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 16px rgba(102, 126, 234, 0.4);
  transform: translateY(-1px);
}

/* Question list */
.qa-list {
  flex: 1;
  overflow-y: auto;
  padding-right: 8px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

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

.qa-list::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary-500), var(--accent-500));
  border-radius: var(--radius-full);
}

/* Question item card */
.qa-item {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.06),
    rgba(255, 255, 255, 0.03)
  );
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: 18px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;

  /* Subtle shadow */
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.qa-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.qa-item:hover {
  border-color: rgba(99, 102, 241, 0.2);
  box-shadow:
    0 8px 24px rgba(0, 0, 0, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transform: translateX(-4px);
}

.qa-item:hover::before {
  opacity: 0.05;
}

.qa-item.pinned {
  border-color: rgba(251, 191, 36, 0.3);
  background: linear-gradient(
    135deg,
    rgba(251, 191, 36, 0.08),
    rgba(251, 191, 36, 0.04)
  );
}

.qa-item.pinned::after {
  content: '📌';
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 16px;
}

.qa-item-question,
.qa-item__question {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-primary);
  margin-bottom: 12px;
  font-weight: 500;
}

.qa-item-meta,
.qa-item__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

.qa-item__footer {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.qa-status {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  text-transform: capitalize;
}

.qa-status.answered {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success-400);
}

.qa-status.pending {
  background: rgba(251, 191, 36, 0.15);
  color: var(--warning-400);
}

.qa-item-asker {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.qa-item-time {
  color: var(--text-disabled);
}

.qa-item-upvotes,
.qa-vote {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary-400);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid rgba(99, 102, 241, 0.2);
  font-size: 14px;
}

.qa-item-upvotes:hover,
.qa-vote:hover:not(:disabled) {
  background: rgba(99, 102, 241, 0.2);
  transform: scale(1.05);
  border-color: rgba(99, 102, 241, 0.4);
}

.qa-item-upvotes.upvoted,
.qa-vote.active {
  background: var(--gradient-primary);
  color: white;
  border-color: transparent;
}

.qa-vote:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Answer section */
.qa-item-answer {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.qa-item-answer-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--success-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.qa-item-answer-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* Empty state */
.qa-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
  color: var(--text-tertiary);
}

.qa-empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.qa-empty-text {
  font-size: 16px;
  font-weight: 500;
}

/* Toast notifications */
.qa-toast-stack {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: calc(var(--z-tooltip) + 1);
}

.qa-toast {
  min-width: 280px;
  padding: 16px 20px;
  border-radius: var(--radius-lg);
  background: linear-gradient(
    135deg,
    rgba(30, 30, 36, 0.98),
    rgba(20, 20, 25, 0.95)
  );
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow:
    0 12px 32px rgba(0, 0, 0, 0.3),
    0 4px 12px rgba(0, 0, 0, 0.15);
  animation: toastSlide 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes toastSlide {
  from {
    opacity: 0;
    transform: translateX(100%) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

/* Mobile optimizations */
@media (max-width: 768px) {
  .qa-drawer {
    width: 100%;
  }

  .qa-drawer__panel {
    border-radius: 0;
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .qa-drawer__header h3 {
    font-size: 20px;
  }

  .qa-form {
    padding: 16px;
  }

  .qa-item {
    padding: 16px;
  }

  .qa-toast-stack {
    left: 16px;
    right: 16px;
    bottom: 16px;
  }

  .qa-toast {
    min-width: auto;
    width: 100%;
  }
}