/* MediTrack - Core Stylesheet & Layout System */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Brand Color Palette */
  --primary-50: #f0f9ff;
  --primary-100: #e0f2fe;
  --primary-500: #0ea5e9;
  --primary-600: #0284c7;
  --primary-700: #0369a1;
  --secondary-500: #4f46e5;
  --secondary-600: #4338ca;
  --accent-teal: #14b8a6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  
  /* Light Mode Variables */
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.75);
  --bg-sidebar: #0f172a;
  --border-color: #e2e8f0;
  --border-glass: rgba(226, 232, 240, 0.8);
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-white: #ffffff;
  
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.25);
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  --sidebar-width: 270px;
  --sidebar-collapsed-width: 80px;
  --navbar-height: 70px;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* App Container Layout */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-sidebar);
  color: #f8fafc;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: width var(--transition-normal), transform var(--transition-normal);
  border-right: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar-header {
  height: var(--navbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.4);
}

.brand-name {
  font-size: 20px;
  font-weight: 800;
  color: white;
  letter-spacing: -0.5px;
}

.brand-name span {
  color: var(--primary-500);
}

.sidebar-nav {
  padding: 20px 12px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: #64748b;
  padding: 12px 14px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  color: #94a3b8;
  font-weight: 600;
  font-size: 14px;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  position: relative;
}

.nav-item:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.06);
  transform: translateX(3px);
}

.nav-item.active {
  color: #ffffff;
  background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
  box-shadow: var(--shadow-glow);
}

.nav-item .icon {
  font-size: 20px;
  width: 24px;
  display: flex;
  justify-content: center;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background-color: rgba(0, 0, 0, 0.2);
}

.user-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px;
  border-radius: var(--radius-md);
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--secondary-500), var(--primary-500));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.user-info {
  flex: 1;
  overflow: hidden;
}

.user-name {
  font-size: 14px;
  font-weight: 700;
  color: white;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  font-size: 11px;
  color: #94a3b8;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.role-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
}

.role-badge.admin {
  background-color: rgba(244, 63, 94, 0.2);
  color: #fb7185;
}

.role-badge.student {
  background-color: rgba(14, 165, 233, 0.2);
  color: #38bdf8;
}

.role-badge.supervisor {
  background-color: rgba(16, 185, 129, 0.2);
  color: #34d399;
}

/* Main Content Area */
.main-wrapper {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition-normal);
}

/* Navbar Header */
.top-navbar {
  height: var(--navbar-height);
  background-color: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 90;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.top-navbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Mobile Only Utility (Hidden on desktop > 1024px) */
.mobile-only {
  display: none !important;
}

.menu-toggle {
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.sidebar-header .menu-toggle {
  color: #94a3b8;
}

.sidebar-header .menu-toggle:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.08);
}

.menu-toggle:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

.page-title-group h1 {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.3px;
}

.page-title-group p {
  font-size: 13px;
  color: var(--text-muted);
}

.top-navbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Quick Role Switcher Pill */
.role-switcher-pill {
  display: flex;
  align-items: center;
  background-color: var(--bg-main);
  border: 1px solid var(--border-color);
  padding: 4px 6px;
  border-radius: var(--radius-full);
  gap: 4px;
}

.role-switcher-btn {
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-full);
  border: none;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.role-switcher-btn.active {
  background-color: var(--primary-500);
  color: white;
  box-shadow: 0 2px 8px rgba(14, 165, 233, 0.3);
}

/* Dark Mode Toggle Button */
.theme-toggle-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 18px;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  border-color: var(--primary-500);
  color: var(--primary-500);
  transform: rotate(15deg);
}

/* Page Main View Container */
.page-content {
  padding: 32px;
  flex: 1;
}

/* Mobile-only elements hidden by default on desktop/laptop */
.mobile-only {
  display: none !important;
}

/* Responsive Overlays & Mobile Adjustments */
@media (max-width: 1024px) {
  .mobile-only {
    display: flex !important;
  }
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.mobile-open {
    transform: translateX(0);
  }
  .main-wrapper {
    margin-left: 0;
  }
  .top-navbar {
    padding: 0 16px;
  }
  .page-content {
    padding: 20px 16px;
  }
}