/* header.css */
:root {
  --primary-color: #004F80;
  --secondary-color: #2AB7CA;
  --dark-color: #2F4858;
  --light-color: #F4F6F8;
  --white: #FFFFFF;
  --border-color: #D0D6DA;
  --hover-color: #E6F2F8;
  --shadow: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
  --gradient-primary: linear-gradient(135deg, #004F80 0%, #0073b6 100%);
}

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

/* Base Styles */
html, body {
  height: 100%;
  margin: 0;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  background: linear-gradient(135deg, #e3f2fd 0%, #f5f5f5 50%, #fff3e0 100%);
  color: #1a2332;
  overflow-x: hidden;
}

/* Topbar */
.topbar {
  position: fixed;
  top: 10px;
  left: 260px;
  right: 10px;
  height: 56px;
  background-color: var(--white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  z-index: 1030;
  border-radius: 14px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

.topbar *,
.topbar i,
.topbar .navbar-brand,
.topbar .dropdown-toggle {
  color: var(--dark-color) !important;
}

.topbar .form-control:focus {
  box-shadow: none;
  border-color: var(--primary-color);
}

/* Sidebar */
.sidebar {
  position: fixed;
  left: 0;
  top: 10px;
  width: 250px;
  height: calc(100% - 16px);
  background-color: var(--white);
  color: var(--dark-color);
  padding: 1rem;
  overflow-y: auto;
  border-right: 1px solid var(--border-color);
  border-radius: 26px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  z-index: 1020;
}

/* Sidebar Header with TRACK text */
.sidebar .logo-text {
  transition: all 0.3s ease;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  letter-spacing: 0.5px;
}

.sidebar .nav-link {
  color: var(--dark-color);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 6px;
  font-weight: 500;
  display: flex;
  align-items: center;
  transition: all 0.3s ease;
}

/* Hover */
.sidebar .nav-link:hover,
.sidebar .nav-link.active {
  background-color: #E6F2FB !important;
  color: var(--primary-color) !important;
  transform: translateX(4px);
}

/* Icon Animation */
.sidebar .nav-link i {
  transition: transform 0.3s ease, color 0.3s ease;
  width: 20px;
  text-align: center;
}

.sidebar .nav-link:hover i,
.sidebar .nav-link.active i {
  transform: scale(1.1);
  color: var(--primary-color) !important;
}

/* Main Content */
.main-content {
  position: relative;
  margin-top: 70px;
  margin-left: 260px;
  margin-right: 10px;
  height: calc(100vh - 80px);
  overflow-y: auto;
  background-color: var(--white);
  padding: 16px;
  border-radius: 16px;
  box-shadow: var(--shadow);
  -webkit-overflow-scrolling: touch;
  transition: all 0.3s ease;
  width: calc(100% - 270px);
}

/* Buttons */
.btn-primary.rounded-circle {
  width: 40px;
  height: 40px;
  font-size: 1rem;
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.btn-primary.rounded-circle:hover {
  background-color: #003D66;
  border-color: #003D66;
  transform: scale(1.05);
}

.btn-light {
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.btn-light:hover {
  background-color: var(--hover-color);
  border-color: var(--primary-color);
}

/* Sidebar Collapsed */
.sidebar.sidebar-collapsed {
  width: 80px;
}

.sidebar.sidebar-collapsed .nav-link span,
.sidebar.sidebar-collapsed .logo-text {
  display: none !important;
}

.sidebar.sidebar-collapsed .nav-link {
  justify-content: center;
  padding: 10px;
}

.sidebar.sidebar-collapsed .nav-link i {
  margin-right: 0;
}

.sidebar.sidebar-collapsed .d-flex.align-items-center.justify-content-center.gap-2 {
  justify-content: center;
  gap: 0 !important;
}

/* Responsive */
@media (max-width: 991.98px) {
  .topbar {
    left: 10px;
    right: 10px;
    top: 10px;
    height: 56px;
    border-radius: 14px;
  }

  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 220px;
    height: 100%;
    z-index: 1040;
    border-radius: 0;
    transform: translateX(-100%);
    border-right: none;
  }

  .sidebar.show {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 10px;
    margin-right: 10px;
    margin-top: 76px;
    height: calc(100vh - 86px);
    width: calc(100% - 20px);
    border-radius: 16px;
  }

  /* Overlay for mobile */
  .sidebar.show::before {
    content: '';
    position: fixed;
    top: 0;
    left: 220px;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
  }
}

@media (max-width: 575.98px) {
  .topbar {
    height: 50px;
    left: 5px;
    right: 5px;
    top: 5px;
  }

  .main-content {
    margin: 65px 5px 5px 5px;
    height: calc(100vh - 70px);
    padding: 10px;
  }

  .sidebar {
    width: 180px;
    padding: 0.5rem;
  }
}

/* Large Desktop */
@media (min-width: 1200px) {
  .main-content {
    margin-left: 260px;
    width: calc(100% - 280px);
  }
}

/* Scrollbar */
.sidebar::-webkit-scrollbar,
.main-content::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-thumb,
.main-content::-webkit-scrollbar-thumb {
  background: var(--secondary-color);
  border-radius: 10px;
}

.sidebar::-webkit-scrollbar-track,
.main-content::-webkit-scrollbar-track {
  background: var(--light-color);
  border-radius: 10px;
}

/* Ensure proper stacking context */
body {
  position: relative;
}

/* Mobile sidebar toggle button */
#sidebarToggle {
  display: none;
}

@media (max-width: 991.98px) {
  #sidebarToggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
  }
}

/* Sidebar Header Styles */
.sidebar-header {
  padding: 0.75rem 0;
  margin-bottom: 1rem;
}

.logo-container {
  position: relative;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-color), #0073b6);
  
  border-radius: 16px;
  box-shadow: 0 6px 20px rgba(0, 79, 128, 0.25);
  transition: all 0.3s ease;
  min-height: 60px;
}

.logo-text {
  color: white !important;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin: 0;
  flex: 1;
  text-align: center;
  padding-right: 40px;
}

.collapse-btn {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px !important;
  height: 32px !important;
  background: rgba(255, 255, 255, 0.9) !important;
  border: none !important;
  color: var(--primary-color) !important;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem !important;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.collapse-btn:hover {
  background: white !important;
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Sidebar collapsed state */
.sidebar.sidebar-collapsed .logo-container {
  padding: 12px;
  justify-content: center;
  background: transparent;
  box-shadow: none;
}

.sidebar.sidebar-collapsed .logo-text {
  display: none !important;
}

.sidebar.sidebar-collapsed .collapse-btn {
  position: static;
  transform: none;
  background: var(--primary-color) !important;
  color: white !important;
  width: 40px !important;
  height: 40px !important;
}

.sidebar.sidebar-collapsed .collapse-btn:hover {
  background: #003D66 !important;
  transform: scale(1.05);
}

/* Hover effects */
.logo-container:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 79, 128, 0.35);
}

.sidebar.sidebar-collapsed .logo-container:hover {
  transform: none;
  box-shadow: none;
}

/* Responsive design */
@media (max-width: 991.98px) {
  .logo-container {
    padding: 10px 14px;
    min-height: 55px;
  }
  
  .logo-text {
    font-size: 1.1rem !important;
  }
  
  .collapse-btn {
    width: 32px !important;
    height: 32px !important;
    font-size: 0.75rem !important;
  }
}

@media (max-width: 575.98px) {
  .logo-container {
    padding: 8px 12px;
    min-height: 50px;
  }
  
  .logo-text {
    font-size: 1rem !important;
    padding-right: 35px;
  }
  
  .collapse-btn {
    width: 28px !important;
    height: 28px !important;
    right: 6px;
  }
}