.admin-body {
  background-color: var(--color-primary);
  color: var(--color-text);
  font-family: var(--font-body);
  margin: 0;
  padding: 0;
  height: 100vh;
  overflow: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Login Screen */
.login-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(rgba(13, 27, 42, 0.85), rgba(13, 27, 42, 0.9)), url('../assets/images/gym-floor.jpeg') center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  backdrop-filter: blur(5px);
}

.login-box {
  background: rgba(26, 37, 53, 0.6);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  padding: 50px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  width: 100%;
  max-width: 450px;
  text-align: center;
  box-shadow: 0 25px 50px rgba(0,0,0,0.5), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
  transform: translateY(0);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.login-box:hover {
  transform: translateY(-5px);
  box-shadow: 0 30px 60px rgba(0,0,0,0.6), inset 0 0 0 1px rgba(255, 255, 255, 0.1);
  border-color: rgba(244, 88, 26, 0.3);
}

.login-box .navbar__logo img {
  height: 80px;
  margin-bottom: 10px;
  filter: drop-shadow(0 4px 10px rgba(0,0,0,0.5));
}

.login-box h2 {
  margin-bottom: 30px;
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-size: 2rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.login-box h2 span {
  color: var(--color-secondary);
}

.login-box .form-group {
  text-align: left;
  margin-bottom: 25px;
}

.login-box label {
  display: block;
  margin-bottom: 8px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.login-box input {
  width: 100%;
  padding: 15px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: white;
  font-size: 1rem;
  transition: all 0.3s ease;
  font-family: var(--font-body);
  box-sizing: border-box;
}

.login-box input:focus {
  outline: none;
  background: rgba(0, 0, 0, 0.4);
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(244, 88, 26, 0.2);
}

.login-box .btn-primary {
  padding: 15px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 1px;
  margin-top: 10px;
  border-radius: 8px;
  box-shadow: var(--shadow-glow);
  cursor: pointer;
}

.login-box .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(244, 88, 26, 0.6);
}

.error-msg {
  color: #ff6b6b;
  margin-bottom: 15px;
  font-size: 0.95rem;
  font-weight: 600;
  display: none;
  background: rgba(255, 107, 107, 0.1);
  padding: 10px;
  border-radius: 6px;
  border-left: 3px solid #ff6b6b;
}

/* Layout */
.admin-container {
  display: flex;
  height: 100vh;
}

.sidebar {
  width: 250px;
  background: var(--color-sidebar-bg);
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--color-border);
}

.sidebar__logo {
  padding: 20px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar__nav {
  padding: 20px 0;
  flex-grow: 1;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px 20px;
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  background: rgba(244, 88, 26, 0.1);
  color: var(--color-secondary);
  border-right: 3px solid var(--color-secondary);
}

.sidebar__bottom {
  padding: 20px;
  border-top: 1px solid var(--color-border);
}

.main-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.topbar {
  height: 70px;
  background: var(--color-topbar-bg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 30px;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-dark);
}

.topbar__user {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.content-area {
  padding: 30px;
  overflow-y: auto;
  flex-grow: 1;
}

.tab-pane {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Dashboard Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-card {
  background: var(--color-card-bg);
  padding: 25px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.stat-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-secondary);
}

.stat-info h3 {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 5px;
}

.stat-info p {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-text);
}

.mock-chart {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 200px;
  margin-top: 20px;
}

.mock-chart .bar {
  flex: 1;
  background: var(--color-secondary);
  border-radius: 4px 4px 0 0;
  opacity: 0.8;
  transition: var(--transition);
}

.mock-chart .bar:hover {
  opacity: 1;
}

/* Tables */
.table-container {
  background: var(--color-card-bg);
  border-radius: 12px;
  overflow: hidden;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th, .data-table td {
  padding: 15px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.data-table th {
  background: var(--color-table-header);
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.data-table tr:hover {
  background: var(--color-table-row-hover);
}

.status-badge {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.status-badge.active { background: rgba(46, 204, 113, 0.2); color: #2ecc71; }
.status-badge.inactive { background: rgba(231, 76, 60, 0.2); color: #e74c3c; }

.action-btns button {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  margin-right: 10px;
  transition: 0.2s;
}

.action-btns button:hover {
  color: var(--color-text);
}

.action-btns .delete-btn:hover {
  color: #e74c3c;
}

/* Messages */
.messages-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.message-card {
  background: var(--color-card-bg);
  padding: 20px;
  border-radius: 12px;
  border-left: 4px solid var(--color-secondary);
}

.message-card.read {
  border-left-color: rgba(255,255,255,0.1);
  opacity: 0.7;
}

.message-card.outbound {
  border-left-color: #3498db;
}

.message-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
}

.message-sender {
  font-weight: 700;
  color: var(--color-text);
}

.message-meta {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.message-body {
  color: #ccc;
  line-height: 1.5;
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: var(--color-modal-overlay);
  z-index: 3000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(5px);
}

.modal.show {
  display: flex;
}

.modal-content {
  background: var(--color-card-bg);
  padding: 30px;
  border-radius: 12px;
  width: 100%;
  max-width: 500px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.modal-content label {
  display: block;
  margin-bottom: 8px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 600;
}

.modal-content input, 
.modal-content select, 
.modal-content textarea {
  width: 100%;
  padding: 12px;
  background: var(--color-input-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  font-size: 0.95rem;
  font-family: var(--font-body);
  margin-bottom: 15px;
}

.modal-content input:focus, 
.modal-content select:focus, 
.modal-content textarea:focus {
  outline: none;
  border-color: var(--color-secondary);
  background: rgba(0, 0, 0, 0.3);
}

.close-modal {
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Sidebar Toggle */
.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
  margin-right: 15px;
}

/* Mobile Responsive Styles */
@media (max-width: 992px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: -260px;
    height: 100%;
    z-index: 4000;
    transition: all 0.3s ease;
    width: 250px;
    box-shadow: 10px 0 30px rgba(0,0,0,0.5);
  }

  .sidebar.active {
    left: 0;
  }

  .sidebar-toggle {
    display: block;
  }

  .topbar {
    padding: 0 15px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .content-area {
    padding: 20px;
  }

  .topbar__user span {
    display: none;
  }
}

@media (max-width: 600px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .stat-card {
    padding: 15px;
  }

  .login-box {
    padding: 30px 20px;
  }

  .data-table th, .data-table td {
    padding: 10px;
    font-size: 0.85rem;
  }

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

  .modal-content {
    width: 90%;
    padding: 20px;
  }
}

/* Sidebar Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 3500;
}

.sidebar-overlay.active {
  display: block;
}

/* Mail Layout (Gmail-like) */
.mail-layout {
  display: flex;
  height: calc(100vh - 170px);
  background: var(--color-card-bg);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.mail-sidebar {
  width: 240px;
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  padding: 20px 0;
  background: var(--color-surface);
}

.compose-btn {
  margin: 0 20px 20px 20px;
  padding: 12px !important;
  font-size: 0.9rem !important;
}

.mail-folders {
  display: flex;
  flex-direction: column;
}

.mail-folder {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 25px;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.mail-folder i {
  width: 20px;
  text-align: center;
}

.mail-folder:hover {
  background: rgba(255,255,255,0.03);
  color: var(--color-text);
}

.mail-folder.active {
  background: rgba(244, 88, 26, 0.1);
  color: var(--color-secondary);
  border-left: 3px solid var(--color-secondary);
  padding-left: 22px;
}

.mail-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  background: rgba(0,0,0,0.05);
}

.mail-header-actions {
  padding: 15px 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
}

.mail-search {
  position: relative;
  flex-grow: 1;
  max-width: 400px;
}

.mail-search i {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
}

.mail-search input {
  width: 100%;
  padding: 10px 15px 10px 45px;
  background: var(--color-input-bg);
  border: 1px solid var(--color-border);
  border-radius: 30px;
  color: var(--color-text);
  font-size: 0.9rem;
}

.mail-search input:focus {
  outline: none;
  border-color: var(--color-secondary);
  background: rgba(255,255,255,0.08);
}

.mail-list {
  flex-grow: 1;
  overflow-y: auto;
}

.mail-item {
  display: grid;
  grid-template-columns: 200px 1fr 120px;
  gap: 20px;
  padding: 12px 25px;
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  align-items: center;
  transition: all 0.2s ease;
}

.mail-item:hover {
  background: rgba(255,255,255,0.03);
}

.mail-item.unread {
  background: rgba(244, 88, 26, 0.02);
}

.mail-item.unread .mail-sender {
  font-weight: 700;
  color: var(--color-text);
}

.mail-item.unread .mail-subject {
  font-weight: 600;
  color: #eee;
}

.mail-sender {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mail-subject-wrapper {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mail-subject {
  color: var(--color-text);
  font-size: 0.9rem;
}

.mail-excerpt {
  color: #666;
  font-size: 0.85rem;
}

.mail-date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: right;
}

.mail-preview {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  background: var(--color-card-bg);
  animation: slideInRight 0.3s ease;
}

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

.preview-header {
  padding: 20px 30px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.preview-sender-info {
  display: flex;
  align-items: center;
  gap: 15px;
}

.preview-avatar {
  width: 45px;
  height: 45px;
  background: var(--color-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: white;
}

.preview-body {
  padding: 30px;
  flex-grow: 1;
  overflow-y: auto;
  line-height: 1.6;
  color: var(--color-text);
}

.preview-actions {
  padding: 20px 30px;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 15px;
}

.btn-icon-outline {
  width: 35px;
  height: 35px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.btn-icon-outline:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  background: rgba(244, 88, 26, 0.05);
}