/* ==============================================================================
   ระบบรายงานการสอน วิทยาลัยชุมชนหนองบัวลำภู (NBCC)
   CSS Design System: สว่าง / มืด / ปรับขนาดตัวอักษร / พิมพ์ / การเข้าถึง (WCAG AA)
   ============================================================================== */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+Thai:wght@300;400;500;600;700&display=swap');

/* --- Root Design Tokens (Light Theme Default) --- */
:root {
  --font-scale: 1;
  --font-base: 'IBM Plex Sans Thai', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Colors (Light Mode) */
  --color-primary: #14614B;
  --color-primary-hover: #0E4737;
  --color-primary-light: #E7F3EF;
  --color-accent: #C99A2E;
  --color-accent-hover: #A67E24;
  --color-accent-light: #FAF4E5;
  
  --color-bg: #F3F6F5;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F8FAF9;
  --color-text: #17302A;
  --color-text-muted: #526B64;
  --color-border: #D4DFDB;
  --color-border-focus: #14614B;

  --color-success: #1E7E34;
  --color-success-bg: #E8F5E9;
  --color-warning: #B7791F;
  --color-warning-bg: #FEFCBF;
  --color-danger: #C53030;
  --color-danger-bg: #FED7D7;
  --color-info: #2B6CB0;
  --color-info-bg: #BEE3F8;

  --shadow-sm: 0 1px 2px rgba(20, 97, 75, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(20, 97, 75, 0.08), 0 2px 4px -1px rgba(20, 97, 75, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(20, 97, 75, 0.1), 0 4px 6px -2px rgba(20, 97, 75, 0.05);
  --shadow-modal: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;

  --transition-speed: 0.2s;
  --header-height: 64px;
}

/* --- Dark Theme Tokens --- */
[data-theme="dark"] {
  --color-primary: #4CC29C;
  --color-primary-hover: #63D1AC;
  --color-primary-light: #183A30;
  --color-accent: #E2B755;
  --color-accent-hover: #F0C96F;
  --color-accent-light: #332812;

  --color-bg: #0F1B18;
  --color-surface: #172622;
  --color-surface-hover: #1E332E;
  --color-text: #E6F0EC;
  --color-text-muted: #9BB3AB;
  --color-border: #263E38;
  --color-border-focus: #4CC29C;

  --color-success: #48BB78;
  --color-success-bg: #1A3628;
  --color-warning: #ECC94B;
  --color-warning-bg: #3C3314;
  --color-danger: #FC8181;
  --color-danger-bg: #3E1E1E;
  --color-info: #63B3ED;
  --color-info-bg: #1B3147;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
  --shadow-modal: 0 20px 25px -5px rgba(0, 0, 0, 0.7);
}

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

html {
  font-size: calc(16px * var(--font-scale));
  scroll-behavior: smooth;
  font-family: var(--font-base);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

/* Accessible Focus Styles */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* Respect Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text);
  line-height: 1.3;
  font-weight: 600;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.15rem; }

p, span, label, input, textarea, select, button {
  font-family: inherit;
  font-size: 1rem;
}

/* --- Layout Containers --- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 0.75rem;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.brand-logo {
  width: 46px;
  height: 46px;
  object-fit: contain;
  flex-shrink: 0;
}

.brand-titles {
  display: flex;
  flex-direction: column;
}

.brand-title-main {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.brand-title-sub {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

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

.control-btn-group {
  display: flex;
  align-items: center;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2px;
}

.control-btn {
  background: none;
  border: none;
  padding: 0.35rem 0.6rem;
  min-height: 38px;
  min-width: 38px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  transition: all var(--transition-speed);
}

.control-btn:hover {
  background-color: var(--color-surface);
  color: var(--color-primary);
}

.control-btn.active {
  background-color: var(--color-surface);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
}

/* Navigation Tabs */
.app-nav {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 0.5rem;
  padding: 0 1rem;
}

.nav-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border: none;
  background: none;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all var(--transition-speed);
  text-decoration: none;
}

.nav-item:hover {
  color: var(--color-primary);
}

.nav-item.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 600;
}

/* Offline Banner */
.offline-banner {
  background-color: var(--color-warning-bg);
  color: var(--color-warning);
  border-bottom: 1px solid var(--color-warning);
  padding: 0.6rem 1rem;
  text-align: center;
  font-size: 0.9rem;
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.offline-banner.visible {
  display: flex;
}

/* Main Content Area */
.app-main {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

/* Cards */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: 0.5rem;
}

.card-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  color: var(--color-primary);
}

/* --- Form Components --- */
.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .form-grid.two-cols {
    grid-template-columns: 1fr 1fr;
  }
  .form-grid.three-cols {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

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

.form-label {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.required-badge {
  color: var(--color-danger);
  font-weight: 700;
}

.form-control {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 1rem;
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
  min-height: 44px;
}

.form-control:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(20, 97, 75, 0.15);
  outline: none;
}

.form-control.is-invalid {
  border-color: var(--color-danger);
  background-color: rgba(197, 48, 48, 0.02);
}

.form-help {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.form-error {
  font-size: 0.85rem;
  color: var(--color-danger);
  display: none;
  align-items: center;
  gap: 0.3rem;
  font-weight: 500;
}

.form-error.visible {
  display: flex;
}

textarea.form-control {
  min-height: 90px;
  resize: vertical;
}

/* Date Display Helper */
.date-picker-wrapper {
  position: relative;
}

.buddhist-date-preview {
  display: inline-block;
  margin-top: 0.25rem;
  font-size: 0.9rem;
  color: var(--color-primary);
  font-weight: 500;
  background-color: var(--color-primary-light);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-speed);
  min-height: 44px;
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #FFFFFF;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-surface-hover);
  border-color: var(--color-text-muted);
}

.btn-accent {
  background-color: var(--color-accent);
  color: #1A202C;
}

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

.btn-danger {
  background-color: var(--color-danger);
  color: #FFFFFF;
}

.btn-danger:hover:not(:disabled) {
  opacity: 0.9;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
  min-height: 36px;
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* --- Image Upload Section --- */
.pdpa-notice {
  background-color: var(--color-accent-light);
  border-left: 4px solid var(--color-accent);
  padding: 0.75rem 1rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.88rem;
  color: var(--color-text);
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.upload-actions-bar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.dropzone-area {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1rem;
  text-align: center;
  background-color: var(--color-surface);
  cursor: pointer;
  transition: all var(--transition-speed);
  margin-bottom: 1.25rem;
}

.dropzone-area.drag-over {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.dropzone-icon {
  font-size: 2.2rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

/* Image Thumbnails Grid */
.images-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.image-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-speed);
}

.image-card-thumb-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background-color: var(--color-bg);
  overflow: hidden;
  cursor: pointer;
}

.image-card-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.image-card-order-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background-color: rgba(0, 0, 0, 0.7);
  color: #FFFFFF;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.image-card-size-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background-color: rgba(20, 97, 75, 0.9);
  color: #FFFFFF;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
}

.image-card-details {
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.image-caption-input {
  width: 100%;
  padding: 0.4rem 0.6rem;
  font-size: 0.88rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg);
  color: var(--color-text);
}

.image-card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--color-border);
  padding-top: 0.5rem;
}

.image-reorder-group {
  display: flex;
  gap: 0.25rem;
}

/* Progress and status */
.image-status-bar {
  margin-top: 0.4rem;
}

.progress-bar-container {
  width: 100%;
  height: 6px;
  background-color: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--color-primary);
  width: 0%;
  transition: width 0.3s ease;
}

.image-status-text {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 2px;
}

/* --- Sticky Bottom Bar on Mobile --- */
.form-sticky-footer {
  position: sticky;
  bottom: 0;
  z-index: 40;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 10px rgba(0, 0, 0, 0.06);
  padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom, 0px));
  margin-top: 1.5rem;
}

.sticky-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.draft-indicator {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* --- Reports List & Table --- */
.filter-bar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
  align-items: flex-end;
}

.filter-item {
  flex: 1;
  min-width: 180px;
}

.reports-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 768px) {
  .reports-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .reports-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.report-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.report-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.report-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}

.report-course-code {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.report-date {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.report-topic {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.35;
}

.report-meta {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.report-image-preview-strip {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.25rem;
  overflow-x: auto;
  padding-bottom: 4px;
}

.report-image-mini-thumb {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  border: 1px solid var(--color-border);
  flex-shrink: 0;
}

.report-card-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.4rem;
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
}

/* Skeleton Loaders */
.skeleton {
  background: linear-gradient(90deg, var(--color-border) 25%, var(--color-surface-hover) 50%, var(--color-border) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-card {
  height: 220px;
  border-radius: var(--radius-lg);
}

/* Empty States */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  background-color: var(--color-surface);
  border: 1.5px dashed var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.empty-state-icon {
  font-size: 3rem;
  color: var(--color-primary);
  opacity: 0.8;
}

.empty-state-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
}

.empty-state-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  max-width: 450px;
}

/* --- Modals & Lightbox --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background-color: rgba(0, 0, 0, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  backdrop-filter: blur(3px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-speed);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-modal);
  width: 100%;
  max-width: 760px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.25rem;
  color: var(--color-primary);
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Lightbox */
.lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  background-color: rgba(0, 0, 0, 0.92);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-speed);
}

.lightbox-modal.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-img {
  max-width: 95vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.lightbox-caption {
  color: #FFFFFF;
  margin-top: 1rem;
  font-size: 1rem;
  text-align: center;
  max-width: 700px;
}

.lightbox-close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
  border: none;
  font-size: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- Toast Notification System --- */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 150;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 420px;
  width: calc(100% - 3rem);
  pointer-events: none;
}

.toast {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.15rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  pointer-events: auto;
  animation: slide-up 0.25s ease-out;
  border-left: 5px solid var(--color-primary);
}

.toast.success { border-left-color: var(--color-success); }
.toast.error { border-left-color: var(--color-danger); }
.toast.warning { border-left-color: var(--color-warning); }

.toast-message {
  font-size: 0.95rem;
  color: var(--color-text);
  flex: 1;
}

.toast-action-btn {
  background: none;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.toast-action-btn:hover {
  background-color: var(--color-primary);
  color: #FFFFFF;
}

/* Soft Delete Undo Floating Bar */
.undo-bar {
  position: fixed;
  bottom: 5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 120;
  background-color: #17302A;
  color: #FFFFFF;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-modal);
  display: flex;
  align-items: center;
  gap: 1rem;
  animation: slide-up 0.3s ease;
}

.undo-progress-ring {
  width: 24px;
  height: 24px;
  transform: rotate(-90deg);
}

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

/* --- Stats & Dashboard --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* User Role Badge */
.role-badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.role-badge.teacher {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.role-badge.head {
  background-color: var(--color-accent-light);
  color: var(--color-accent);
}

.role-badge.admin {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
}

/* --- Footer --- */
.app-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
  padding: 1.5rem 1rem;
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

/* --- Print Stylesheet (@media print) --- */
@media print {
  /* ซ่อนปุ่ม ส่วนควบคุม เมนู แบนเนอร์ ทาสก์บาร์ทั้งหมด */
  .app-header,
  .app-nav,
  .app-footer,
  .form-sticky-footer,
  .filter-bar,
  .upload-actions-bar,
  .dropzone-area,
  .card-header .btn,
  .report-card-actions,
  .toast-container,
  .lightbox-modal,
  .undo-bar,
  .modal-footer,
  .control-btn-group,
  .no-print {
    display: none !important;
  }

  body, html {
    background: #FFFFFF !important;
    color: #000000 !important;
    font-size: 11pt !important;
    line-height: 1.4 !important;
  }

  .app-main {
    padding: 0 !important;
    max-width: 100% !important;
  }

  .card {
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  /* หน้าต่างพิมพ์ทางการของ วชช.หนองบัวลำภู */
  .print-official-header {
    display: block !important;
    text-align: center;
    border-bottom: 2px solid #000;
    padding-bottom: 12px;
    margin-bottom: 20px;
  }

  .print-official-logo {
    width: 65px;
    height: 65px;
    margin-bottom: 6px;
  }

  .print-report-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 18px;
  }

  .print-report-table th,
  .print-report-table td {
    border: 1px solid #333;
    padding: 8px 10px;
    vertical-align: top;
    text-align: left;
  }

  .print-report-table th {
    background-color: #f2f2f2 !important;
    width: 25%;
    font-weight: bold;
  }

  /* ภาพถ่ายในใบรายงาน */
  .print-photos-grid {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 15px !important;
    page-break-inside: avoid;
    margin-top: 15px;
  }

  .print-photo-item {
    border: 1px solid #ccc;
    padding: 6px;
    text-align: center;
    page-break-inside: avoid;
  }

  .print-photo-item img {
    max-width: 100%;
    max-height: 220px;
    object-fit: contain;
    display: block;
    margin: 0 auto;
  }

  .print-photo-caption {
    font-size: 9pt;
    margin-top: 6px;
    color: #333;
  }

  /* ส่วนลงนาม */
  .print-signatures-section {
    display: flex !important;
    justify-content: space-between;
    margin-top: 40px;
    page-break-inside: avoid;
  }

  .print-signature-box {
    width: 45%;
    text-align: center;
  }
}