:root {
  --color-bg: #f9fafb;
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Noto Sans Bangladesh', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
  background-color: var(--color-bg);
  color: var(--color-gray-900);
}

button {
  cursor: pointer;
  border: none;
}

input {
  font: inherit;
}

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

/* Login Page */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background-color: var(--color-gray-50);
}

.login-box {
  width: 100%;
  max-width: 24rem;
}

.login-box h2 {
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  font-size: 1.875rem;
  font-weight: 700;
  text-align: center;
  color: var(--color-gray-900);
}

.login-box p {
  margin-top: 0.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-gray-500);
}

.login-box form {
  margin-top: 2rem;
  display: grid;
  gap: 1.5rem;
}

.login-box input {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--color-gray-50);
  border: 1px solid var(--color-gray-300);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-gray-900);
}

.login-box input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.login-box button {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--color-primary);
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 0.5rem;
}

.login-box button:hover {
  background-color: var(--color-primary-dark);
}

/* Main App */
.main-app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--color-gray-50);
}

.main-app header {
  background-color: white;
  border-bottom: 1px solid var(--color-gray-200);
}

.main-app .header-content {
  max-width: 80rem;
  margin: 0 auto;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
}

.main-app .logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.main-app .logo img {
  height: 2rem;
  width: 2rem;
  border-radius: 0.375rem;
}

.main-app .logo span {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-gray-900);
}

.main-app .desktop-menu {
  display: none;
  gap: 2rem;
}

.main-app .desktop-menu a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-500);
  padding: 0.5rem 0.75rem;
  border-radius: 0.375rem;
}

.main-app .desktop-menu a:hover,
.main-app .desktop-menu a.active {
  color: var(--color-gray-900);
  background-color: var(--color-gray-100);
}

.main-app .user-menu {
  position: relative;
}

.main-app .user-menu-button {
  background: none;
  padding: 0.5rem;
  border-radius: 0.375rem;
}

.main-app .user-menu-button:hover {
  background-color: var(--color-gray-100);
}

.main-app .user-menu-button img {
  height: 2rem;
  width: 2rem;
  border-radius: 9999px;
}

.main-app .mobile-menu-button {
  display: none;
  background: none;
  padding: 0.5rem;
  border-radius: 0.375rem;
}

.main-app .mobile-menu-button:hover {
  background-color: var(--color-gray-100);
}

.main-app .mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.5rem;
  background-color: white;
  border: 1px solid var(--color-gray-200);
  border-radius: 0.5rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  width: 16rem;
  padding: 0.5rem 0;
  z-index: 10;
}

.main-app .mobile-menu a {
  display: block;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-700);
}

.main-app .mobile-menu a:hover {
  background-color: var(--color-gray-100);
  color: var(--color-gray-900);
}

.main-app main {
  flex: 1;
  overflow-y: auto;
  padding: 2rem;
}

.main-app .dashboard {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
}

.main-app .stat-card {
  background-color: white;
  border-radius: 0.5rem;
  padding: 1.5rem;
  text-align: center;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--color-gray-200);
}

.main-app .stat-card dd {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-gray-500);
}

.main-app .stat-card dt {
  margin-top: 0.5rem;
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* Responsive */
@media (min-width: 640px) {
  .main-app .desktop-menu {
    display: flex;
  }
  
  .main-app .mobile-menu-button {
    display: none;
  }
}

@media (max-width: 639px) {
  .main-app .desktop-menu {
    display: none;
  }
  
  .main-app .mobile-menu-button {
    display: block;
  }
}