:root {
  /* iOS Safe Area Support */
  --safe-area-inset-top: env(safe-area-inset-top, 0px);
  --safe-area-inset-bottom: env(safe-area-inset-bottom, 0px);
  --safe-area-inset-left: env(safe-area-inset-left, 0px);
  --safe-area-inset-right: env(safe-area-inset-right, 0px);
}

.help-hero {
  text-align: center;
  padding: 32px 0 24px;
}
.help-hero h1 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text-main);
}
.help-hero p {
  color: var(--text-muted);
  font-size: 15px;
  margin: 0;
}

.help-tabs {
  display: flex;
  gap: 4px;
  background: var(--mint-soft);
  border-radius: 16px;
  padding: 4px;
  margin-bottom: 24px;
  overflow-x: auto;
}
.help-tab {
  flex: 1;
  min-width: max-content;
  padding: 10px 16px;
  border: none;
  border-radius: 12px;
  background: transparent;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s;
  white-space: nowrap;
}
.help-tab.active {
  background: var(--bg-soft);
  color: var(--text-main);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.help-tab:hover:not(.active) {
  color: var(--text-main);
}

.tab-content {
  display: none;
  animation: fadeIn 0.3s ease;
}
.tab-content.active {
  display: block;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.faq-item {
  background: var(--bg-soft);
  border-radius: 16px;
  padding: 0;
  border: 1px solid rgba(0,0,0,0.06);
  overflow: hidden;
  transition: box-shadow 0.2s;
}
.faq-item:hover {
  box-shadow: var(--shadow-soft);
}
.faq-item summary {
  padding: 16px 20px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--text-main);
}
.faq-item summary::after {
  content: '+';
  font-size: 20px;
  font-weight: 300;
  color: var(--text-muted);
  transition: transform 0.2s;
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  content: '-';
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item p {
  padding: 0 20px 16px;
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
}

.auth-gate {
  text-align: center;
  padding: 48px 24px;
  background: var(--bg-soft);
  border-radius: 20px;
  border: 1px solid rgba(0,0,0,0.06);
}
.auth-gate-icon {
  font-size: 48px;
  margin-bottom: 16px;
}
.auth-gate h3 {
  margin: 0 0 8px;
  font-size: 20px;
}
.auth-gate p {
  color: var(--text-muted);
  margin: 0 0 20px;
}

.form-card {
  background: var(--bg-soft);
  border-radius: 20px;
  padding: 28px;
  border: 1px solid rgba(0,0,0,0.06);
}
.form-card h2 {
  margin: 0 0 20px;
  font-size: 20px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-muted);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid rgba(0,0,0,0.1);
  border-radius: 12px;
  font-size: 14px;
  background: var(--bg);
  color: var(--text-main);
  font-family: inherit;
  transition: border-color 0.2s;
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  font-family: inherit;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  border: 1.5px solid rgba(0,0,0,0.12);
  color: var(--text-main);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  padding: 8px 12px;
}
.btn-ghost:hover {
  color: var(--text-main);
}
.btn-sm {
  padding: 8px 14px;
  font-size: 13px;
}
.btn-lg {
  padding: 14px 28px;
  font-size: 15px;
  width: 100%;
}

.success-card {
  text-align: center;
  padding: 48px 24px;
  background: var(--bg-soft);
  border-radius: 20px;
  border: 1px solid rgba(0,0,0,0.06);
}
.success-icon {
  font-size: 48px;
  margin-bottom: 16px;
}
.success-card h2 {
  margin: 0 0 12px;
}
.success-card p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
}
.success-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 24px;
  flex-wrap: wrap;
}

.ticket-card {
  background: var(--bg-soft);
  border-radius: 16px;
  padding: 18px 20px;
  border: 1px solid rgba(0,0,0,0.06);
  margin-bottom: 10px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.ticket-card:hover {
  box-shadow: var(--shadow-soft);
  transform: translateY(-1px);
}
.ticket-card-body {
  flex: 1;
  min-width: 0;
}
.ticket-card-title {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 4px;
  color: var(--text-main);
}
.ticket-card-type {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.ticket-card-booking {
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 4px;
}
.ticket-card-date {
  font-size: 12px;
  color: var(--text-muted);
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.status-open { background: #fef2f2; color: #dc2626; }
.status-in_progress { background: #fffbeb; color: #d97706; }
.status-waiting_response { background: #fff7ed; color: #ea580c; }
.status-resolved { background: #f0fdf4; color: #16a34a; }
.status-closed { background: #f1f5f9; color: #64748b; }
:root[data-theme="dark"] .status-open { background: rgba(220,38,38,0.15); }
:root[data-theme="dark"] .status-in_progress { background: rgba(217,119,6,0.15); }
:root[data-theme="dark"] .status-waiting_response { background: rgba(234,88,12,0.15); }
:root[data-theme="dark"] .status-resolved { background: rgba(22,163,74,0.15); }
:root[data-theme="dark"] .status-closed { background: rgba(100,116,139,0.15); }

.back-btn {
  margin-bottom: 16px;
}
.ticket-chat-header {
  background: var(--bg-soft);
  border-radius: 16px;
  padding: 18px 20px;
  margin-bottom: 16px;
  border: 1px solid rgba(0,0,0,0.06);
}
.ticket-chat-header h2 {
  margin: 0 0 8px;
  font-size: 18px;
}
.ticket-booking-ref {
  font-size: 13px;
  color: var(--accent);
  margin-top: 8px;
}

.chat-messages {
  background: var(--bg-soft);
  border-radius: 16px;
  padding: 20px;
  min-height: 300px;
  max-height: 500px;
  overflow-y: auto;
  margin-bottom: 16px;
  border: 1px solid rgba(0,0,0,0.06);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.chat-msg {
  max-width: 80%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.5;
  position: relative;
}
.chat-msg-user {
  align-self: flex-end;
  background: var(--pink-soft);
  border-bottom-right-radius: 4px;
  color: var(--text-main);
}
.chat-msg-support {
  align-self: flex-start;
  background: var(--mint-soft);
  border-bottom-left-radius: 4px;
  color: var(--text-main);
}
.chat-msg-system {
  align-self: center;
  background: transparent;
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
  padding: 6px 12px;
}
.chat-msg-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}
.chat-msg-badge {
  font-size: 10px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 2px;
}

.chat-input-area {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}
.chat-input-area textarea {
  flex: 1;
  padding: 12px 14px;
  border: 1.5px solid rgba(0,0,0,0.1);
  border-radius: 14px;
  font-size: 14px;
  font-family: inherit;
  background: var(--bg-soft);
  color: var(--text-main);
  outline: none;
  resize: none;
}
.chat-input-area textarea:focus {
  border-color: var(--accent);
}
.btn-send {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 12px;
  font-size: 18px;
  flex-shrink: 0;
}

.chat-closed-msg {
  text-align: center;
  padding: 20px;
  background: var(--bg-soft);
  border-radius: 16px;
  border: 1px solid rgba(0,0,0,0.06);
  color: var(--text-muted);
}
.satisfaction-area {
  margin-top: 12px;
}
.rating-stars {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 8px;
}
.rating-star {
  font-size: 28px;
  cursor: pointer;
  transition: transform 0.15s;
  filter: grayscale(1);
}
.rating-star.active,
.rating-star:hover {
  filter: grayscale(0);
  transform: scale(1.15);
}

.suggestions-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}
.suggestions-header h2 {
  margin: 0;
  font-size: 20px;
}
.suggestions-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
}
.sub-tab {
  padding: 8px 16px;
  border: none;
  border-radius: 10px;
  background: var(--mint-soft);
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.sub-tab.active {
  background: var(--accent);
  color: #fff;
}

.suggestion-card {
  background: var(--bg-soft);
  border-radius: 16px;
  padding: 18px 20px;
  border: 1px solid rgba(0,0,0,0.06);
  margin-bottom: 10px;
  transition: all 0.2s;
}
.suggestion-card:hover {
  box-shadow: var(--shadow-soft);
}
.suggestion-card-top {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.suggestion-votes {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 52px;
}
.vote-btn {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1.5px solid rgba(0,0,0,0.1);
  background: var(--bg);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.vote-btn:hover,
.vote-btn.voted {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}
.vote-count {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
}
.suggestion-body {
  flex: 1;
  min-width: 0;
}
.suggestion-title {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 4px;
  color: var(--text-main);
  cursor: pointer;
}
.suggestion-title:hover {
  color: var(--accent);
}
.suggestion-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.suggestion-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.category-chip {
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  background: var(--mint-soft);
  color: var(--text-muted);
}
.status-badge {
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
}
.status-badge-new { background: #dbeafe; color: #2563eb; }
.status-badge-under_review { background: #fef9c3; color: #a16207; }
.status-badge-planned { background: #e9d5ff; color: #7c3aed; }
.status-badge-in_progress { background: #ffedd5; color: #c2410c; }
.status-badge-released { background: #dcfce7; color: #16a34a; }
.status-badge-declined { background: #f1f5f9; color: #64748b; }
:root[data-theme="dark"] .status-badge-new { background: rgba(37,99,235,0.2); }
:root[data-theme="dark"] .status-badge-under_review { background: rgba(161,98,7,0.2); }
:root[data-theme="dark"] .status-badge-planned { background: rgba(124,58,237,0.2); }
:root[data-theme="dark"] .status-badge-in_progress { background: rgba(194,65,12,0.2); }
:root[data-theme="dark"] .status-badge-released { background: rgba(22,163,74,0.2); }
:root[data-theme="dark"] .status-badge-declined { background: rgba(100,116,139,0.2); }

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  animation: fadeIn 0.2s;
}
.modal-content {
  background: var(--bg-soft);
  border-radius: 20px;
  padding: 28px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-lg {
  max-width: 640px;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.modal-header h2 {
  margin: 0;
  font-size: 20px;
}
.modal-close {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: none;
  background: var(--mint-soft);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all 0.2s;
}
.modal-close:hover {
  background: var(--danger);
  color: #fff;
}

.detail-comments {
  margin-top: 24px;
  border-top: 1px solid rgba(0,0,0,0.08);
  padding-top: 20px;
}
.detail-comments h3 {
  margin: 0 0 12px;
  font-size: 16px;
}
.comment-item {
  padding: 10px 14px;
  background: var(--bg);
  border-radius: 12px;
  margin-bottom: 8px;
  font-size: 13px;
  line-height: 1.5;
}
.comment-author {
  font-weight: 600;
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 2px;
}
.comment-date {
  font-size: 11px;
  color: var(--text-muted);
}
#commentFormArea {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  align-items: flex-end;
}
#commentFormArea textarea {
  flex: 1;
  padding: 10px 12px;
  border: 1.5px solid rgba(0,0,0,0.1);
  border-radius: 10px;
  font-size: 13px;
  font-family: inherit;
  background: var(--bg);
  color: var(--text-main);
  outline: none;
  resize: none;
}

.update-card {
  background: var(--bg-soft);
  border-radius: 16px;
  padding: 20px;
  border: 1px solid rgba(0,0,0,0.06);
  margin-bottom: 10px;
  transition: box-shadow 0.2s;
}
.update-card:first-child {
  border-left: 3px solid var(--accent);
}
.update-card:hover {
  box-shadow: var(--shadow-soft);
}
.update-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.update-version {
  font-weight: 700;
  font-size: 15px;
  color: var(--accent);
}
.update-date {
  font-size: 12px;
  color: var(--text-muted);
}
.update-list {
  margin: 0;
  padding: 0 0 0 20px;
  list-style: none;
}
.update-list li {
  position: relative;
  padding: 4px 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-main);
}
.update-list li::before {
  content: '';
  position: absolute;
  left: -16px;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.6;
}

.empty-state {
  text-align: center;
  padding: 40px 24px;
}
.empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
}
.empty-state h3 {
  margin: 0 0 8px;
}
.empty-state p {
  color: var(--text-muted);
  margin: 0 0 16px;
}

.hidden {
  display: none !important;
}

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: var(--bg-soft);
  border-top: 1px solid rgba(0,0,0,0.06);
  padding: 6px 0 max(6px, env(safe-area-inset-bottom));
  z-index: 900;
}
.bottom-nav-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 4px;
  border: none;
  background: none;
  font-size: 10px;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  transition: color 0.2s;
}
.bottom-nav-btn span {
  font-size: 20px;
}
.bottom-nav-btn.active {
  color: var(--accent);
}

@media (min-width: 768px) {
  .bottom-nav { display: none; }
  .container { padding-bottom: 32px; }
}
@media (max-width: 767px) {
  .container { padding-bottom: 80px; }
  .help-hero h1 { font-size: 22px; }
  .form-card { padding: 20px; }
  .modal-content { padding: 20px; }
  .chat-messages { max-height: 350px; }
  .nav-actions { gap: 6px; }
  .suggestions-header { flex-direction: column; align-items: flex-start; }
}