/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* CSS Variables for Light Theme */
:root {
  /* Primary Colors */
  --primary: #6366f1;
  --primary-light: #818cf8;
  --primary-dark: #4f46e5;
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  
  /* Secondary Colors */
  --secondary: #8b5cf6;
  --secondary-light: #a78bfa;
  --secondary-dark: #7c3aed;
  
  /* Accent Colors */
  --accent: #ec4899;
  --accent-light: #f472b6;
  --accent-dark: #db2777;
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --bg-card: #ffffff;
  --bg-hover: #f9fafb;
  
  /* Text Colors */
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-muted: #9ca3af;
  --text-light: #6b7280;
  
  /* Border Colors */
  --border-light: #e5e7eb;
  --border-default: #d1d5db;
  --border-dark: #9ca3af;
  
  /* Status Colors */
  --success: #10b981;
  --success-light: #34d399;
  --success-bg: #ecfdf5;
  --danger: #ef4444;
  --danger-light: #f87171;
  --danger-bg: #fef2f2;
  --warning: #f59e0b;
  --warning-light: #fbbf24;
  --warning-bg: #fffbeb;
  --info: #3b82f6;
  --info-light: #60a5fa;
  --info-bg: #eff6ff;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
}

/* Global Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* App Layout Container */
.app {
  display: flex;
  min-height: 100vh;
  position: relative;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

/* Modern Sidebar */
.sidebar {
  width: 280px;
  background: var(--bg-primary);
  border-right: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  left: 0;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-base);
}

.sidebar .logo {
  padding: var(--spacing-lg) var(--spacing-xl);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--primary-gradient);
  color: white;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.sidebar .logo img {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: white;
  padding: 4px;
  box-shadow: var(--shadow-md);
}

/* Sidebar Navigation */
.sidebar nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md) 0;
}

.sidebar nav::-webkit-scrollbar {
  width: 6px;
}

.sidebar nav::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

.sidebar nav::-webkit-scrollbar-thumb {
  background: var(--border-default);
  border-radius: var(--radius-full);
}

.sidebar a {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-xl);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  position: relative;
  margin: 2px var(--spacing-sm);
  border-radius: var(--radius-lg);
}

.sidebar a:hover {
  background: var(--bg-secondary);
  color: var(--primary);
  transform: translateX(4px);
}

.sidebar a.active {
  background: var(--primary-gradient);
  color: white;
  box-shadow: var(--shadow-md);
}

.sidebar a.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  background: white;
  border-radius: 0 4px 4px 0;
}

.sidebar a span {
  font-size: 1.25rem;
  width: 24px;
  text-align: center;
}

.sidebar a b {
  font-weight: 500;
}

/* Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  cursor: pointer;
}

.dropdown-menu {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  margin-top: var(--spacing-xs);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.dropdown:hover .dropdown-menu {
  display: block;
  animation: slideDown var(--transition-fast);
}

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

/* Sidebar Bottom */
.sidebar-bottom {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--border-light);
  background: var(--bg-secondary);
}

.user-row {
  margin-bottom: var(--spacing-sm);
}

.user-row .badge {
  background: var(--primary-gradient);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.logout-btn,
.login-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  background: var(--danger-bg);
  color: var(--danger);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-fast);
  justify-content: center;
}

.logout-btn:hover {
  background: var(--danger);
  color: white;
  transform: scale(1.02);
}

.login-btn {
  background: var(--success-bg);
  color: var(--success);
}

.login-btn:hover {
  background: var(--success);
  color: white;
}

/* Main Content Area */
.content {
  flex: 1;
  margin-left: 280px;
  padding: var(--spacing-xl);
  min-height: 100vh;
  transition: margin-left var(--transition-base);
}

/* Modern Card Component */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-gradient);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px);
}

.card:hover::before {
  opacity: 1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

/* Modern Forms */
.form-row {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
  align-items: flex-end;
}

.form-row > * {
  flex: 1;
  min-width: 200px;
}

label {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="tel"],
select,
textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-primary);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  font-family: inherit;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
  background: white;
}

input::placeholder,
textarea::placeholder {
  color: var(--text-muted);
}

input:disabled,
select:disabled {
  background: var(--bg-tertiary);
  color: var(--text-muted);
  cursor: not-allowed;
  opacity: 0.6;
}

/* Modern Buttons */
button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--primary-gradient);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}

button:hover,
.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  filter: brightness(1.1);
}

button:active,
.btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Button Variants */
.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 2px solid var(--border-default);
}

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

.btn-success {
  background: linear-gradient(135deg, var(--success) 0%, var(--success-light) 100%);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger) 0%, var(--danger-light) 100%);
}

.btn-warning {
  background: linear-gradient(135deg, var(--warning) 0%, var(--warning-light) 100%);
}

.btn-small {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.875rem;
}

/* Modern Tables */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

thead {
  background: var(--bg-secondary);
}

th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--border-light);
}

td {
  padding: var(--spacing-md);
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-light);
}

tbody tr {
  transition: all var(--transition-fast);
}

tbody tr:hover {
  background: var(--bg-hover);
}

tbody tr:last-child td {
  border-bottom: none;
}

.actions {
  display: flex;
  gap: var(--spacing-xs);
}

.actions a,
.actions button {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-tertiary);
  color: var(--primary);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  border: 1px solid var(--border-light);
}

.actions a:hover,
.actions button:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid var(--border-light);
}

.badge.success {
  background: var(--success-bg);
  color: var(--success);
  border-color: var(--success-light);
}

.badge.danger {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: var(--danger-light);
}

.badge.warning {
  background: var(--warning-bg);
  color: var(--warning);
  border-color: var(--warning-light);
}

.badge.info {
  background: var(--info-bg);
  color: var(--info);
  border-color: var(--info-light);
}

/* Alert Messages */
.success,
.danger,
.warning,
.info {
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  
  align-items: center;
  gap: var(--spacing-sm);
  animation: slideIn var(--transition-base);
}

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

.success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success-light);
}

.danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid var(--danger-light);
}

.warning {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid var(--warning-light);
}

.info {
  background: var(--info-bg);
  color: var(--info);
  border: 1px solid var(--info-light);
}

/* Print Styles */
@media print {
  .sidebar,
  .noprint {
    display: none !important;
  }
  
  .content {
    margin-left: 0;
  }
  
  body {
    background: white;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #000;
  }
}

/* Loading States */
.loading {
  position: relative;
  pointer-events: none;
  opacity: 0.6;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-light);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
  background: var(--border-default);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

.hidden { display: none !important; }
.block { display: block !important; }
.flex { display: flex !important; }
.grid { display: grid !important; }

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

.animate-fade-in {
  animation: fadeIn var(--transition-base);
}

.animate-slide-up {
  animation: slideUp var(--transition-base);
}

/* Glass Morphism Effects */
.glass {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Gradient Text */
.gradient-text {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Hover Effects */
.hover-lift {
  transition: transform var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
}

.hover-grow {
  transition: transform var(--transition-base);
}

.hover-grow:hover {
  transform: scale(1.05);
}

/* Focus Styles */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background: var(--primary);
  color: white;
}

/* Mobile Menu Toggle (default state is hidden on desktop) */
.mobile-menu-toggle {
  display: none;
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 1001;
  background: var(--primary-gradient);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md); /* Better padding for tap area */
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  font-size: 1.5rem; /* Make icon larger */
  line-height: 1; /* Center icon vertically */
}


/* =================================================================== */
/* ===================   START: RESPONSIVE STYLES   ================== */
/* =================================================================== */

@media (max-width: 768px) {
  
  /* Show the mobile menu toggle button */
  .mobile-menu-toggle {
    display: block;
  }
  
  /* Sidebar is hidden off-screen by default */
  .sidebar {
    transform: translateX(-100%);
    box-shadow: none; /* Hide shadow when off-screen */
  }
  
  /* .active class (toggled by JS) slides the sidebar into view */
  .sidebar.active {
    transform: translateX(0);
    box-shadow: var(--shadow-xl); /* Show a prominent shadow when it overlaps content */
  }
  
  /* Main content area takes up the full screen width */
  .content {
    margin-left: 0;
    padding: var(--spacing-lg); /* Adjust padding for smaller screens */
  }
  
  /* Make tables inside cards scroll horizontally to prevent layout breaks */
  .card table {
    display: block;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch; /* Smooth scrolling on iOS */
  }

  /* Stack form elements vertically */
  .form-row {
    flex-direction: column;
    align-items: stretch; /* Make children full-width */
  }
  
  .form-row > * {
    min-width: 100%;
    margin-bottom: var(--spacing-md); /* Add space between stacked elements */
  }
  
  /* Adjust typography for smaller screens */
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  
  .card {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
  }
  
  th, td {
    padding: var(--spacing-sm) var(--spacing-md);
    white-space: nowrap; /* Prevent table content from wrapping */
  }
}

/* =================================================================== */
/* ====================   END: RESPONSIVE STYLES   =================== */
/* =================================================================== */