/* Base Variables */
:root {
  /* Primary Colors */
  --primary-color: #8bcd6a;
  --primary-light: #81C784;
  --primary-dark: #388E3C;
  --primary-gradient: linear-gradient(145deg, var(--primary-color), var(--primary-dark));
  --primary-gradient-hover: linear-gradient(145deg, var(--primary-dark), #2E7D32);

  /* Secondary Colors */
  --secondary-color: #78909C;
  --secondary-light: #B0BEC5;
  --secondary-dark: #546E7A;
  --secondary-gradient: linear-gradient(145deg, var(--secondary-color), var(--secondary-dark));
  --secondary-gradient-hover: linear-gradient(145deg, var(--secondary-dark), #455A64);

  /* State Colors */
  --success-color: #8BC34A;
  --success-dark: #689F38;
  --success-gradient: linear-gradient(145deg, var(--success-color), var(--success-dark));
  --success-gradient-hover: linear-gradient(145deg, var(--success-dark), #558B2F);

  --error-color: #F44336;
  --error-dark: #D32F2F;
  --error-gradient: linear-gradient(145deg, var(--error-color), var(--error-dark));
  --error-gradient-hover: linear-gradient(145deg, var(--error-dark), #C62828);

  --info-color: #03A9F4;
  --info-dark: #0288D1;
  --info-gradient: linear-gradient(145deg, var(--info-color), var(--info-dark));
  --info-gradient-hover: linear-gradient(145deg, var(--info-dark), #0277BD);

  --warning-color: #FFC107;
  --warning-dark: #FFA000;
  --warning-gradient: linear-gradient(145deg, var(--warning-color), var(--warning-dark));
  --warning-gradient-hover: linear-gradient(145deg, var(--warning-dark), #FF8F00);

  /* Button Specific */
  --btn-font-weight: 600;
  --btn-font-size: 0.9375rem;
  --btn-font-size-sm: 0.875rem;
  --btn-min-height: 42px;
  --btn-min-height-sm: 34px;
  --btn-padding: 0.625rem 1.25rem;
  --btn-padding-sm: 0.375rem 0.75rem;
  --btn-icon-spacing: 0.625rem;
  --btn-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
  --btn-shadow-hover: 0 4px 6px rgba(0, 0, 0, 0.12);
  --btn-shadow-active: 0 1px 2px rgba(0, 0, 0, 0.12);
  --btn-overlay-hover: rgba(255, 255, 255, 0.1);
  --btn-disabled-opacity: 0.65;
  --btn-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);

  /* Neutrals */
  --background-light: #f8fafc;
  --background-dark: #1e293b;
  --surface: #ffffff;
  --border-color: #e2e8f0;
  --muted: #cbd5e1;

  /* Text Colors */
  --text-dark: #1e293b;
  --text-light: #f8fafc;
  --text-muted: #64748b;

  /* Typography */
  --font-main: system-ui, -apple-system, sans-serif;
  --font-size-base: 16px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;

  /* Breakpoints */
  --mobile: 640px;
  --tablet: 768px;
  --desktop: 1024px;
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  line-height: 1.5;
  color: var(--text-dark);
  background-color: var(--background-light);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}


/* Common Table Styles */
.table-container {
  overflow-x: auto;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  margin-bottom: var(--spacing-xl);
  width: 100%;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

/* Custom Scrollbar */
.table-container::-webkit-scrollbar {
  height: 8px;
}

.table-container::-webkit-scrollbar-track {
  background: var(--background-light);
  border-radius: var(--radius-sm);
}

.table-container::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-sm);
}

.table-container::-webkit-scrollbar-thumb:hover {
  background: var(--secondary-color);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.table th {
  background-color: var(--background-light);
  position: sticky;
  top: 0;
  font-weight: 600;
  text-align: left;
  padding: 0.75rem;
  border-bottom: 2px solid var(--border-color);
}

.table td {
  padding: 12px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

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

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .modal-content {
    width: 100%;
    height: 100%;
    border-radius: 0;
  }

  .modal-header {
    border-radius: 0;
    padding: var(--spacing-sm);
  }

  .table-container {
    margin: 0 calc(var(--spacing-md) * -1);
    padding: 0 var(--spacing-md);
  }
}

/* Lock body scroll when modal is open */
body.modal-open {
  overflow: hidden;
}

.footer {
  margin-top: auto;
  background-color: var(--primary-color);
  color: var(--text-light);
  padding: var(--spacing-md) 0;
}

.footer p {
  margin: 0;
  text-align: center;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-bottom: var(--spacing-md);
  font-weight: 600;
  line-height: 1.2;
}

/* Layout */
.container {
  width: 100%;
  max-width: 1320px;
  padding-right: var(--spacing-md);
  padding-left: var(--spacing-md);
  margin: 0 auto;
}

@media (min-width: 640px) {
  .container {
    max-width: 640px;
  }
}

@media (min-width: 768px) {
  .container {
    max-width: 768px;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 1024px;
  }
}

/* Header */
.header {
  background-color: var(--primary-color);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.header-left {
  display: flex;
  align-items: center;
}

.header-title {
  color: var(--text-light);
  font-size: 1.25rem;
  margin-right: var(--spacing-xl);
}

.header-nav {
  display: flex;
  align-items: center;
  margin-left: auto;
}

.header-buttons-group {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.header-buttons {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  justify-content: center;
}

.header-buttons .btn {
  white-space: nowrap;
}

/* Mobile Header */
@media (max-width: 768px) {
  .header {
    padding: var(--spacing-sm) 0;
  }
  .header-content {
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
  }
  .header-nav {
    flex-wrap: nowrap;
  }
  
  .header-title {
    font-size: 1.1rem;
  }
}

@media (max-width: 639px) {
  .header-content {
    position: relative; /* This might still be needed for positioning context */
  }

  .header-left {
    width: 100%;
    /* Ensure the mobile menu button doesn't cause overflow if title is long */
    /* padding-right for mobile menu button is handled by its own fixed positioning */
  }

  /* Remove .header-nav and .header-nav.active rules from here as they are in mobile-nav.css */
  /* .header-nav {
    display: none; 
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--primary-color);
    padding: var(--spacing-md);
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-md);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  } */

  /* .header-nav.active {
    display: flex;
  } */

  /* Styles for .header-buttons and its children when inside the mobile menu */
  /* are now primarily handled by mobile-nav.css */
  /* .header-buttons {
    flex-direction: column;
    width: 100%;
    gap: var(--spacing-sm);
  } */

  /* .header-buttons .btn {
    width: 100%;
    justify-content: center;
  } */

  .mobile-menu-button { /* This class seems to be a leftover or alternative, .mobile-menu-toggle is used */
    display: block;
  }

  /* Ensure .header-buttons (the container) itself is not displayed directly in the header on mobile */
  /* if it's only meant to be inside the mobile panel. */
  /* However, mobile-nav.css shows .header-buttons inside .header-nav */
  /* So, the .header-buttons in main.css for mobile can be removed. */

  /* .header-buttons {
    display: none; 
  } */

  /* .header-buttons.active { ... } This logic is also part of mobile-nav.css behavior */
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--btn-padding);
  border: none;
  border-radius: var(--radius-md);
  font-weight: var(--btn-font-weight);
  font-size: var(--btn-font-size);
  text-align: center;
  cursor: pointer;
  transition: var(--btn-transition);
  min-height: var(--btn-min-height);
  line-height: 1.4;
  box-shadow: var(--btn-shadow);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0));
  opacity: 0;
  transition: opacity 0.2s ease;
}

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

.btn i {
  margin-right: var(--btn-icon-spacing);
  font-size: 1.1em;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--btn-shadow-hover);
}

.btn:active {
  transform: translateY(1px);
  box-shadow: var(--btn-shadow-active);
}

.btn:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  min-height: 34px;
}

/* Button variants using CSS variables */
.btn-primary {
  background: var(--primary-gradient);
  color: var(--text-light);
}

.btn-primary:hover {
  background: var(--primary-gradient-hover);
}

.btn-secondary {
  background: var(--secondary-gradient);
  color: var(--text-light);
}

.btn-secondary:hover {
  background: var(--secondary-gradient-hover);
}

.btn-danger {
  background: var(--error-gradient);
  color: var(--text-light);
}

.btn-danger:hover {
  background: var(--error-gradient-hover);
}

.btn-info {
  background: var(--info-gradient);
  color: var(--text-light);
}

.btn-info:hover {
  background: var(--info-gradient-hover);
}

.btn-success {
  background: var(--success-gradient);
  color: var(--text-light);
}

.btn-success:hover {
  background: var(--success-gradient-hover);
}

.btn:disabled {
  opacity: var(--btn-disabled-opacity);
  cursor: not-allowed;
  transform: none !important;
}

/* Button group styles */
.btn-group {
  display: inline-flex;
  gap: 0.5rem;
}

.btn-group .btn {
  position: relative;
}

.btn-group .btn:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -0.25rem;
  top: 25%;
  height: 50%;
  width: 1px;
  background: rgba(255, 255, 255, 0.15);
}

/* Loading state */
.btn.loading {
  position: relative;
  pointer-events: none;
}

.btn.loading::after {
  content: '';
  width: 1rem;
  height: 1rem;
  border: 2px solid transparent;
  border-radius: 50%;
  border-top-color: currentColor;
  animation: spin 0.6s linear infinite;
  position: absolute;
  right: 0.75rem;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Mobile optimization */
@media (max-width: 640px) {
  .btn {
    padding: 0.75rem 1.5rem;
    min-height: 46px; /* Larger touch target */
    /* width: 100%; */
  }
  
  .btn-group {
    flex-direction: column;
    width: 100%;
  }
  
  .btn-group .btn {
    width: 100%;
  }
  
  .btn-group .btn:not(:last-child)::after {
    display: none;
  }
}

/* Forms */
.form-container {
  background-color: var(--surface);
  border-radius: var(--radius-md);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: var(--spacing-xl);
  margin: var(--spacing-xl) auto;
  max-width: 480px;
  width: 90%;
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}

.form-input {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-dark);
  box-shadow: 0 0 0 2px rgba(139, 205, 106, 0.3);
}

/* Content */
.content-section {
  padding: var(--spacing-xl) 0;
}

.card {
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transition: box-shadow 0.2s ease;
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

/* Tables */
.table-container {
  overflow-x: auto;
  margin: var(--spacing-md) 0;
}

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

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

/* Grid */
.grid {
  display: grid;
  gap: var(--spacing-md);
}

@media (min-width: 640px) {
  .grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Utilities */
.text-center {
  text-align: center;
}

.shadow-sm {
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.shadow-md {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.shadow-lg {
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.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); }