/* ==========================================================================
   Kerala IT Parks Job Apply — Theme & Core Styles
   Inspired by clean, warm editorial minimalism (Claude / Anthropic style)
   ========================================================================== */

:root {
  /* Warm Beige Light Theme (Default) */
  --bg-primary: #F5EFE6;
  --bg-surface: #FFFFFF;
  --bg-secondary: #EAE3D9;
  --bg-hover: #E3DBD0;
  
  --text-primary: #1A1A18;
  --text-secondary: #5C5852;
  --text-muted: #8C877E;
  
  --border-color: #E0D7CB;
  --border-focus: #1A1A18;
  
  --accent-primary: #1A1A18;
  --accent-text: #FFFFFF;
  --accent-hover: #33312E;

  --badge-careers-bg: #E8F0FE;
  --badge-careers-text: #1967D2;
  --badge-hr-bg: #FEF7E0;
  --badge-hr-text: #B06000;
  --badge-info-bg: #E6F4EA;
  --badge-info-text: #137333;
  --badge-sent-bg: #CEEAD6;
  --badge-sent-text: #0D652D;
  --badge-empty-bg: #F1F3F4;
  --badge-empty-text: #5F6368;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Iowan Old Style", "Apple Garamond", "Baskerville", "Times New Roman", "Droid Serif", Times, "Source Serif Pro", serif;
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

[data-theme="dark"] {
  --bg-primary: #161514;
  --bg-surface: #201E1C;
  --bg-secondary: #2B2926;
  --bg-hover: #363330;
  
  --text-primary: #F2EFE9;
  --text-secondary: #B0AAA0;
  --text-muted: #7A756D;
  
  --border-color: #383430;
  --border-focus: #F2EFE9;
  
  --accent-primary: #F2EFE9;
  --accent-text: #161514;
  --accent-hover: #FFFFFF;

  --badge-careers-bg: #1A2733;
  --badge-careers-text: #8AB4F8;
  --badge-hr-bg: #332B1A;
  --badge-hr-text: #FDD663;
  --badge-info-bg: #1B2E23;
  --badge-info-text: #81C995;
  --badge-sent-bg: #183321;
  --badge-sent-text: #A8DAB5;
  --badge-empty-bg: #2B2926;
  --badge-empty-text: #9AA0A6;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  padding-bottom: 90px; /* Space for sticky bar */
  transition: background-color var(--transition-normal), color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   Header
   ========================================================================== */
.app-header {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(8px);
  transition: background-color var(--transition-normal);
}

.header-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-subtitle {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.15rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-primary);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.icon-btn svg {
  display: block;
}

/* Light / Dark icon toggling */
.theme-icon-dark {
  display: none;
}
.theme-icon-light {
  display: block;
}

[data-theme="dark"] .theme-icon-dark {
  display: block;
}
[data-theme="dark"] .theme-icon-light {
  display: none;
}

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

/* ==========================================================================
   Main Container
   ========================================================================== */
.main-container {
  max-width: 1080px;
  margin: 1.25rem auto;
  padding: 0 1rem;
}

/* Stats Strip */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.stat-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.stat-value {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 0.25rem;
}

.stat-value.highlight {
  color: #16A34A;
}

/* Controls Panel */
.controls-panel {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Search Box */
.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 1rem;
  color: var(--text-muted);
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.search-box input {
  width: 100%;
  padding: 0.85rem 2.5rem 0.85rem 2.6rem;
  font-size: 0.95rem;
  font-family: inherit;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.search-box input:focus {
  border-color: var(--border-focus);
  background-color: var(--bg-surface);
}

.clear-btn {
  position: absolute;
  right: 0.85rem;
  background: none;
  border: none;
  font-size: 1.3rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0 0.25rem;
}

.clear-btn:hover {
  color: var(--text-primary);
}

/* Filter Group & Chips */
.filter-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.filter-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.chips-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.chip {
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 0.35rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.chip:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.chip.active {
  background-color: var(--accent-primary);
  color: var(--accent-text);
  border-color: var(--accent-primary);
}

/* Quick Toggles */
.filter-options {
  border-top: 1px solid var(--border-color);
  padding-top: 0.75rem;
  gap: 1.25rem;
}

.toggle-control {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.toggle-control input[type="checkbox"] {
  accent-color: var(--accent-primary);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

/* Selection Toolbar */
.selection-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-top: 0.5rem;
}

.selection-left {
  display: flex;
  gap: 0.5rem;
}

.results-count {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

.btn-primary {
  background-color: var(--accent-primary);
  color: var(--accent-text);
  border-color: var(--accent-primary);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--bg-secondary);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ==========================================================================
   Company List & Cards
   ========================================================================== */
.company-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.company-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.95rem 1.15rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
  cursor: pointer;
}

.company-card:hover {
  border-color: var(--text-muted);
}

.company-card.selected {
  border-color: var(--accent-primary);
  background-color: var(--bg-hover);
}

.company-card.is-sent {
  opacity: 0.65;
}

.card-main {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-width: 0;
  flex: 1;
}

.card-checkbox {
  width: 18px;
  height: 18px;
  accent-color: var(--accent-primary);
  cursor: pointer;
  flex-shrink: 0;
}

.card-details {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.card-header-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.company-name {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.park-tag {
  font-size: 0.72rem;
  font-weight: 500;
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
}

.company-email-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.84rem;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
}

.email-link {
  color: var(--text-secondary);
  text-decoration: none;
}

.email-link:hover {
  text-decoration: underline;
  color: var(--text-primary);
}

.no-email-text {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.8rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  text-transform: capitalize;
  white-space: nowrap;
}

.badge-careers {
  background-color: var(--badge-careers-bg);
  color: var(--badge-careers-text);
}

.badge-hr {
  background-color: var(--badge-hr-bg);
  color: var(--badge-hr-text);
}

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

.badge-sent {
  background-color: var(--badge-sent-bg);
  color: var(--badge-sent-text);
}

.badge-empty {
  background-color: var(--badge-empty-bg);
  color: var(--badge-empty-text);
}

/* ==========================================================================
   Sticky Bottom Send Bar
   ========================================================================== */
.sticky-send-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  padding: 0.85rem 1.25rem;
  z-index: 50;
  backdrop-filter: blur(10px);
  transition: transform var(--transition-normal);
}

.bar-container {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.bar-info {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.selected-badge {
  background-color: var(--accent-primary);
  color: var(--accent-text);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  min-width: 24px;
  text-align: center;
}

.selected-text {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}

.bar-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.dry-run-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  background-color: var(--bg-secondary);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.dry-run-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.dry-run-label input {
  accent-color: var(--accent-primary);
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  z-index: 100;
}

.modal-backdrop[hidden] {
  display: none;
}

.modal-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 480px;
  width: 100%;
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  animation: modalIn 200ms ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.modal-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.85rem;
}

.modal-body {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.confirm-summary {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.modal-note {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.65rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-field label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-field input {
  padding: 0.65rem 0.85rem;
  font-size: 0.9rem;
  font-family: inherit;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  outline: none;
}

.form-field input:focus {
  border-color: var(--border-focus);
}

.field-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Toasts & Feedback
   ========================================================================== */
.toast-container {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 120;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 380px;
  width: calc(100% - 2.5rem);
}

.toast {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--accent-primary);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  font-size: 0.88rem;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  animation: toastIn 200ms ease;
}

.toast.success { border-left-color: #16A34A; }
.toast.error { border-left-color: #DC2626; }
.toast.info { border-left-color: #2563EB; }

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

/* Loading & Empty States */
.loading-state, .empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
}

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

/* ==========================================================================
   Mobile Responsiveness
   ========================================================================== */
@media (max-width: 640px) {
  .header-container {
    padding: 0.85rem 1rem;
  }
  .brand-title {
    font-size: 1.2rem;
  }
  .brand-subtitle {
    font-size: 0.75rem;
  }
  .stats-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .controls-panel {
    padding: 1rem;
  }
  .selection-bar {
    flex-direction: column;
    align-items: flex-start;
  }
  .company-card {
    padding: 0.75rem;
  }
  .company-name {
    font-size: 0.9rem;
  }
  .bar-container {
    flex-direction: column;
    align-items: stretch;
    gap: 0.6rem;
  }
  .bar-actions {
    justify-content: space-between;
  }
  .btn {
    width: 100%;
  }
  .selection-left .btn {
    width: auto;
  }
}