* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #A8D8EA;
  --primary-dark: #6BADC0;
  --primary-light: #D4ECF5;
  --primary-bg: #EDF6FA;
  --bg: #F5F7FA;
  --card-bg: #FFFFFF;
  --text: #2C3E50;
  --text-light: #7F8C8D;
  --border: #E8ECF1;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-hover: 0 4px 20px rgba(0,0,0,0.1);
  --radius: 10px;
  --radius-sm: 6px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

#app { display: flex; flex-direction: column; min-height: 100vh; }

/* ===== Header ===== */
#header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  height: 64px;
  gap: 32px;
}

.site-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-dark);
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}
.site-title:hover { opacity: 0.8; }

/* ===== Tab Nav ===== */
#tab-nav {
  display: flex;
  gap: 4px;
  flex: 1;
  overflow-x: auto;
}

.tab-btn {
  background: none;
  border: none;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
}

.tab-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 60%;
  height: 3px;
  background: var(--primary);
  border-radius: 3px 3px 0 0;
  transition: var(--transition);
}

.tab-btn:hover {
  color: var(--primary-dark);
  background: var(--primary-bg);
}

.tab-btn:hover::after { transform: translateX(-50%) scaleX(1); }

.tab-btn.active {
  color: var(--primary-dark);
  background: var(--primary-bg);
}

.tab-btn.active::after { transform: translateX(-50%) scaleX(1); }

/* ===== Auth Area ===== */
#auth-area {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

#user-menu {
  display: flex;
  align-items: center;
  gap: 12px;
}

#user-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary-dark);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-full { width: 100%; padding: 12px; font-size: 15px; }

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(79, 195, 247, 0.4); }

.btn-outline {
  background: transparent;
  color: var(--text-light);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary-dark); background: var(--primary-bg); }

.btn-danger {
  background: #e74c3c;
  color: #fff;
}
.btn-danger:hover { background: #c0392b; }

.btn-success {
  background: #27ae60;
  color: #fff;
}
.btn-success:hover { background: #219a52; }

/* ===== Layout ===== */
.layout-container {
  display: flex;
  gap: 28px;
  max-width: 1180px;
  width: 100%;
  margin: 32px auto;
  padding: 0 24px;
  flex: 1;
  align-items: flex-start;
}

/* ===== Sidebar ===== */
#sidebar {
  width: 280px;
  flex-shrink: 0;
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sidebar-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.profile-card {
  text-align: center;
}

.avatar-wrapper {
  width: 90px;
  height: 90px;
  margin: 0 auto 14px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--primary-light);
  transition: var(--transition);
}

.avatar-wrapper:hover { border-color: var(--primary); }

#avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

#nickname-display {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}

#signature-display {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.5;
  margin-bottom: 14px;
}

.edit-profile-btn { width: 100%; }

/* Profile Editor inside sidebar */
#profile-editor .form-group { margin-bottom: 12px; }
#profile-editor .form-group textarea {
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: var(--transition);
  font-family: inherit;
  resize: vertical;
}
#profile-editor .form-group textarea:focus { border-color: var(--primary); }

/* Calendar Card */
.calendar-card { text-align: center; }

.calendar-header {
  text-align: center;
  margin-bottom: 4px;
}

.calendar-date-main {
  margin-bottom: 2px;
}

.calendar-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-light);
  flex-wrap: wrap;
}

.cal-dot {
  color: var(--border);
  font-weight: 600;
}

.calendar-day {
  font-size: 46px;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1;
}

.calendar-month-year {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.calendar-weekday {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 2px;
}

.calendar-week-number {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 2px;
}

.calendar-divider {
  height: 1px;
  background: var(--border);
  margin: 10px 0;
}

.calendar-lunar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 8px;
}

.cal-label {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  background: var(--primary-bg);
  color: var(--primary-dark);
  font-weight: 500;
}

#cal-lunar {
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
}

.calendar-festivals {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.festival-badge {
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 12px;
  background: #FFF3E0;
  color: #E65100;
  font-weight: 500;
}

/* ===== Layout Order ===== */
#main-content { flex: 1; min-width: 0; order: 1; }
#sidebar { order: 2; }

.content-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
  transition: var(--transition);
  display: none;
}
.content-card.active { display: block; animation: fadeIn 0.3s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.content-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--primary-bg);
}

.content-header h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
}

.content-body {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.content-body h1, .content-body h2, .content-body h3 {
  margin: 20px 0 12px;
  color: var(--text);
}

.content-body p { margin-bottom: 12px; }

.content-body ul, .content-body ol { padding-left: 24px; margin-bottom: 12px; }

.content-body a { color: var(--primary-dark); text-decoration: none; }
.content-body a:hover { text-decoration: underline; }

.content-body blockquote {
  border-left: 4px solid var(--primary);
  padding: 8px 16px;
  margin: 12px 0;
  background: var(--primary-bg);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.content-body img { max-width: 100%; border-radius: var(--radius-sm); margin: 12px 0; }

.content-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 20px 0;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-light);
}
.empty-state p { font-size: 16px; margin-bottom: 8px; }

/* ===== Loading Skeleton ===== */
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }
.skeleton { background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%); background-size: 200% 100%; animation: shimmer 1.5s ease-in-out infinite; border-radius: 6px; }
.skeleton-title { height: 28px; width: 40%; margin-bottom: 20px; }
.skeleton-line { height: 16px; width: 100%; margin-bottom: 10px; }
.skeleton-line:last-child { width: 60%; }
.skeleton-block { height: 120px; width: 100%; margin-top: 12px; }
.skeleton-wrapper { padding: 8px 0; }

/* ===== Permission Badge ===== */

/* ===== Editor ===== */
.content-editor { margin-top: 16px; }

.editor-title {
  width: 100%;
  padding: 12px 16px;
  font-size: 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  transition: var(--transition);
  outline: none;
}
.editor-title:focus { border-color: var(--primary); }

.editor-body {
  width: 100%;
  min-height: 300px;
  padding: 16px;
  font-size: 15px;
  font-family: inherit;
  line-height: 1.8;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  resize: vertical;
  transition: var(--transition);
  outline: none;
}
.editor-body:focus { border-color: var(--primary); }

.editor-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  align-items: center;
}

.editor-permission {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.editor-permission label {
  font-size: 13px;
  color: var(--text-light);
  font-weight: 500;
}

.editor-permission select {
  padding: 6px 12px;
  font-size: 13px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  background: var(--card-bg);
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
}
.editor-permission select:focus { border-color: var(--primary); }

.perm-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 500;
  margin-left: 10px;
}
.perm-badge.guest { background: #E8F5E9; color: #27ae60; }
.perm-badge.user { background: #FFF8E1; color: #f39c12; }
.perm-badge.admin { background: #FCE4EC; color: #e74c3c; }

/* ===== Admin Panel ===== */
.admin-panel h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text);
}

.admin-section { margin-bottom: 32px; }

.table-wrapper { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

thead th {
  text-align: left;
  padding: 12px 16px;
  background: var(--primary-bg);
  color: var(--text);
  font-weight: 600;
  border-bottom: 2px solid var(--primary-light);
}

tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

tbody tr:hover { background: #FAFCFE; }

.role-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

.role-badge.admin { background: var(--primary-bg); color: var(--primary-dark); }
.role-badge.user { background: #F0F0F0; color: var(--text-light); }

.status-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

.status-badge.approved { background: #E8F5E9; color: #27ae60; }
.status-badge.pending { background: #FFF8E1; color: #f39c12; }

.action-btns { display: flex; gap: 6px; flex-wrap: wrap; }
.action-btns .btn { font-size: 12px; padding: 4px 10px; }

/* ===== Modal ===== */
#modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.4);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeInOverlay 0.2s ease;
}

@keyframes fadeInOverlay {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  background: var(--card-bg);
  border-radius: var(--radius);
  width: 420px;
  max-width: 90vw;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  animation: slideUp 0.25s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px 0;
}

.modal-header h3 { font-size: 18px; font-weight: 600; }

.modal-close {
  background: none;
  border: none;
  font-size: 28px;
  color: var(--text-light);
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
  transition: var(--transition);
}
.modal-close:hover { color: var(--text); }

.modal-body { padding: 20px 24px 24px; }

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-light);
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: var(--transition);
}
.form-group input:focus { border-color: var(--primary); }

.form-error {
  color: #e74c3c;
  font-size: 13px;
  margin-bottom: 12px;
  min-height: 20px;
}

.form-switch {
  text-align: center;
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-light);
}

.form-switch a {
  color: var(--primary-dark);
  text-decoration: none;
  font-weight: 500;
}
.form-switch a:hover { text-decoration: underline; }

.success-message {
  text-align: center;
  padding: 20px;
  color: #27ae60;
  font-size: 15px;
}

/* ===== Footer ===== */
#footer {
  text-align: center;
  padding: 24px;
  color: var(--text-light);
  font-size: 13px;
  border-top: 1px solid var(--border);
  background: var(--card-bg);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .layout-container { flex-direction: column; padding: 0 16px; margin: 16px auto; }
  #sidebar { width: 100%; position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; top: auto; order: 0; }
  .sidebar-card { min-width: unset; }
}

@media (max-width: 768px) {
  .header-inner { padding: 0 12px; gap: 8px; }
  .site-title { font-size: 16px; }
  .tab-btn { padding: 5px 10px; font-size: 12px; }
  #main-content { margin: 0; padding: 0; order: 1; }
  .content-card { padding: 16px; }
  .content-header h2 { font-size: 18px; }
  .content-header { flex-wrap: wrap; gap: 6px; }
  .content-header .perm-badge { font-size: 10px; padding: 1px 8px; margin-left: 6px; }

  #sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; order: 0; }
  .sidebar-card { padding: 12px; min-width: unset; }

  .avatar-wrapper { width: 44px; height: 44px; margin: 0 auto 6px; border-width: 2px; }
  #nickname-display { font-size: 13px; margin-bottom: 2px; }
  #signature-display { font-size: 11px; margin-bottom: 6px; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
  .edit-profile-btn { font-size: 11px; padding: 3px 10px; }

  .calendar-day { font-size: 26px; }
  .calendar-month-year { font-size: 12px; }
  .calendar-info { font-size: 10px; gap: 3px; flex-wrap: wrap; }
  .calendar-divider { margin: 4px 0; }
  #cal-lunar { font-size: 11px; }
  .festival-badge { font-size: 10px; padding: 1px 6px; }
  .calendar-header { margin-bottom: 0; }
  .calendar-date-main { margin-bottom: 0; }
  #cal-festivals { margin-top: 2px; }

  .editor-permission { margin-left: 0; width: 100%; justify-content: flex-start; margin-top: 8px; }

  .modal { width: 100%; max-width: 100%; border-radius: 0; min-height: 100vh; }
  #modal-overlay { align-items: flex-end; }
  @keyframes slideUp {
    from { opacity: 0; transform: translateY(100%); }
    to { opacity: 1; transform: translateY(0); }
  }
}