/**
 * Table Header Styling - Modern CSS with Design System
 *
 * This file provides consistent, maintainable styling for table headers
 * using CSS custom properties and modern layout techniques.
 */

:root {
  /* Design System Colors */
  --color-primary: #25AF88;
  --color-primary-hover: #1e9a73;
  --color-primary-focus: rgba(37, 175, 136, 0.1);
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-900: #111827;
  --color-white: #FFFFFF;
  --color-red-500: #EF4444;

  /* Spacing System */
  --space-xs: 0.25rem;   /* 4px */
  --space-sm: 0.5rem;    /* 8px */
  --space-md: 0.75rem;   /* 12px */
  --space-lg: 1rem;      /* 16px */
  --space-xl: 1.25rem;   /* 20px */
  --space-2xl: 1.5rem;   /* 24px */

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 0.5px 0.05px rgba(29, 41, 61, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-focus: 0 0 0 3px rgba(37, 175, 136, 0.1);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;

  /* Typography */
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-weight-medium: 500;
}

/* Table Header Container */
.table-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-lg);
  padding: var(--space-xl);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  background: #FFF;
  flex-wrap: wrap;
}

/* Form Container - all elements on same line */
.table-search-form {
  display: flex;
  align-items: flex-end;
  gap: 12px;
}

/* Search Section - Removed redundant wrapper */

.search-input-group {
  display: flex;
  width: 420px;
  height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid #E5E7EB;
  box-shadow: 0 1px 0.5px 0.05px rgba(29, 41, 61, 0.02);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  color: #1F2937;
}

.search-input-group:focus-within {
  border-color: var(--color-gray-200);
  box-shadow: var(--shadow-focus);
}

.search-input-field {
  flex: 1;
  border: none;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-gray-900);
  outline: none;
}

.search-input-field::placeholder {
  color: var(--color-gray-600);
}

.search-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary);
  border: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: background-color var(--transition-normal);
  min-width: 80px;
}

.search-button:hover {
  background: var(--color-primary-hover);
}

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


.filter-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: flex-start;
}

.filter-field__label {
  font-size: 12px;
  font-weight: 500;
  color: #6B7280;
  margin-bottom: 0;
}

.filter-dropdown {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid #E5E7EB;
  background: #F9FAFB;
  box-shadow: 0 1px 0.5px 0.05px rgba(29, 41, 61, 0.02);
  font-size: 14px;
  color: #1F2937;
  cursor: pointer;
  min-width: 140px;
  outline: none;
  transition: border-color 0.2s ease, background-color 0.2s ease;
  position: relative;
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 8px center;
  background-repeat: no-repeat;
  background-size: 16px;
  padding-right: 32px;
}

.filter-dropdown:hover {
  border-color: #D1D5DB;
  background: #F3F4F6;
}

.filter-dropdown:focus {
  border-color: #25AF88;
  box-shadow: 0 0 0 3px rgba(37, 175, 136, 0.1);
}

/* Remove default dropdown arrow for select elements */
.filter-dropdown::-ms-expand {
  display: none;
}

/* Top Pagination Controls */
.pagination-controls-top {
  display: flex;
  align-items: center;
  margin-left: auto;
}

/* Ensure form doesn't take full width when pagination is present */
.table-search-form {
  flex: 0 1 auto;
}

/* Responsive Design */
@media (max-width: 768px) {
  .table-header {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-lg);
  }

  .table-search-form {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-md);
  }

  .search-input-group {
    width: 100%;
    max-width: none;
  }

  .filter-dropdown {
    flex: 1;
    min-width: auto;
  }

  .pagination-controls-top {
    margin-left: 0;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .table-header {
    padding: var(--space-lg);
  }

  .table-search-form {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .filter-dropdown {
    min-width: auto;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .search-input-group,
  .filter-dropdown {
    border-width: 2px;
  }

  .search-button {
    border: 2px solid var(--color-primary);
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .search-input-group,
  .filter-dropdown,
  .search-button {
    transition: none;
  }
}

/* Dark mode support (future enhancement) */
@media (prefers-color-scheme: dark) {
  :root {
    --color-gray-50: #1F2937;
    --color-gray-100: #374151;
    --color-gray-200: #4B5563;
    --color-gray-300: #6B7280;
    --color-gray-600: #9CA3AF;
    --color-gray-700: #D1D5DB;
    --color-gray-900: #F9FAFB;
    --color-white: #111827;
  }
}