/* Default (Light Mode) Variables */
:root {
  /* Core Palette */
  --primary-accent: #FB923C; /* Orange 400 */
  --success-color: #6EE7B7; /* Emerald 200 */
  --error-color: #DC2626;   /* Red 200 */
  --secondary-neutral: #6B7280; /* Gray 500 */

  /* Light Mode Specific */
  --background-color: #F9FAFB; /* Gray 50 */
  --text-color: #111827; /* Gray 900 */
  --surface-color: #FFFFFF; /* White */
  --border-color: #E5E7EB; /* Gray 200 */
  --text-color-on-accent: #FFFFFF; /* White text on accent color */
  --primary-accent-light: #FFF7ED; /* Orange 50 for light background elements */
}

/* Dark Mode Variables */
html.dark-mode {
  --background-color: #1F2937; /* Gray 800 */
  --text-color: #F3F4F6; /* Gray 100 */
  --surface-color: #2D3748; /* Darker Gray for surfaces */
  --border-color: #4B5563; /* Gray 600 */
  --primary-accent-light: #4A2C00; /* Darker orange for light background elements in dark mode */
  --error-color: #F87171; /* Red 400 */
}

/* General Body Styles */
html, body {
  width: 100%;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', sans-serif;
}

* {
  box-sizing: border-box;
}

#app-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--background-color);
  color: var(--text-color);
  transition: background-color 0.3s ease, color 0.3s ease;
}

#main-content {
    flex: 1 0 auto;
}

#app-footer {
    flex-shrink: 0;
    text-align: center;
    padding: 1rem;
    font-size: 0.875rem;
}

/* Header */
#app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--surface-color);
  padding: 0.5rem; /*1rem;*/
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

#app-logo a {
  font-weight: bold;
  color: var(--primary-accent);
  text-decoration: none;
  font-size: 1.5rem;
}

#app-nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  align-items: center;
}

#app-nav a {
    color: var(--text-color);
    text-decoration: none;
}

#app-nav a:hover {
    text-decoration: underline;
    color: var(--primary-accent);
}

/* Main Layout */
#app-wrapper {
  display: flex;
  flex: 1;
  width: 100%;
  position: relative;
}

.page-title .subtitle {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--secondary-neutral);
  margin-top: 0.5rem;
}

#left-sidebar {
  width: 300px;
  background-color: var(--surface-color);
  padding: 1rem;
  position: sticky;
  top: 0;
  max-height: 100vh;
  overflow: auto;
  border-right: 1px solid var(--border-color);
  transition: transform 0.3s ease-in-out;
  transform: translateX(0);
}

#right-sidebar {
  width: 300px;
  background-color: var(--surface-color);
  padding: 1rem;
  position: sticky;
  top: 0;
  max-height: 100vh;
  overflow: auto;
  border-left: 1px solid var(--border-color);
  transition: transform 0.3s ease-in-out;
  transform: translateX(0);
}

#main-container {
  flex: 1;
  max-width: 1400px;
  min-width: 320px;
  margin: 0 auto;
  padding: 0 2rem;
}

#app-main-content {
    padding: 1.5rem 0;
}

/* Sidebar Toggle Buttons */
.sidebar-toggle-container {
  position: fixed;
  z-index: 100;
  width: 3rem;
  height: 3rem;
}

.sidebar-toggle-container.left {
  left: 0.5rem;
}

.sidebar-toggle-container.right {
  right: 0.5rem;
}

.sidebar-toggle {
  background-color: var(--primary-accent);
  color: var(--text-color-on-accent);
  border: none;
  padding: 10px 15px;
  cursor: pointer;
  border-radius: 9999px;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s ease-in-out, opacity 0.2s ease-in-out;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.sidebar-toggle:hover {
  opacity: 0.9;
}

#left-sidebar.hidden-sidebar {
  width: 0;
  padding: 0;
  transform: translateX(-100%);
}

#right-sidebar.hidden-sidebar {
  width: 0;
  padding: 0;
  transform: translateX(100%);
}

/* --- Component Styles --- */

/* Page Title */
.page-title {
  font-size: 1.875rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 2rem;
}

/* Input Sections */
.input-sections-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (min-width: 1024px) {
  .input-sections-wrapper {
    grid-template-columns: repeat(2, 1fr);
  }
}

.file-input-container {
  padding: 1.5rem;
  background-color: var(--background-color);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
}

.dark-mode .file-input-container {
  background-color: #374151;
  border-color: var(--border-color);
}

.file-input-header {
  font-size: 1.25rem;
  font-weight: 500;
  opacity: 0.9;
}

/* Main Actions */
.main-actions-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

@media (min-width: 640px) {
  .main-actions-container {
    flex-direction: row;
  }
}

/* Results Section */
.results-container {
  margin-top: 2rem;
}

.results-display-wrapper {
  background-color: var(--surface-color);
  padding: 1.5rem;
  border-radius: 0.75rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.dark-mode .results-display-wrapper {
  background-color: var(--background-color);
}

.viewer-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.data-viewer-container, .metadata-viewer-container {
  display: flex;
  flex-direction: column;
}

.data-viewer-container > * + *, .metadata-viewer-container > * + * {
    margin-top: 1rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.dark-mode .data-viewer-container > * + *, .dark-mode .metadata-viewer-container > * + * {
    border-color: #374151;
}

.no-data-message {
    color: var(--secondary-neutral);
    text-align: center;
    padding: 1rem 0;
}

/* EXIF & Metadata Tables */
.exif-table-header, .metadata-row, .exif-data-row-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.exif-table-header {
  font-size: 0.875rem;
  color: var(--secondary-neutral);
  padding: 0 1rem 0.5rem;
  font-weight: 700;
}

.exif-header-item {
  flex: 1;
  text-align: center;
}

.metadata-row, .exif-data-row {
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  background-color: var(--background-color);
}

.metadata-row:hover {
  background-color: #F3F4F6;
}

.dark-mode .metadata-row:hover {
  background-color: #4B5563;
}

.exif-data-row:hover {
  background-color: #F3F4F6;
}

.dark-mode .exif-data-row:hover {
  background-color: #4B5563;
}

.metadata-label, .tag-name-container {
  flex: 1 1 33.333333%;
  font-weight: 600;
  font-size: 0.875rem;
  padding-right: 1rem;
}

.tag-name-container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 0.25rem;
}

.tag-name-key {
  font-weight: 600;
  font-size: 0.875rem;
}

.tag-name-type {
  font-size: 0.75rem;
  color: var(--secondary-neutral);
}

.metadata-value, .exif-value, .collapsible-container, .exif-value-cell {
  color: #4B5563;
  word-break: break-word;
  white-space: normal;
  text-align: center;
  font-size: 0.875rem;
}

.dark-mode .metadata-value, .dark-mode .exif-value, .dark-mode .exif-value-cell {
  color: #D1D5DB;
}

.dark-mode .collapsible-pre {
  color: var(--text-color);
}

.single-view .metadata-value,
.single-view .exif-value-cell {
  flex: 2 1 66.666667%;
}

.compare-view .metadata-value,
.compare-view .exif-value-cell {
  flex: 1 1 33.333333%;
}

.differs {
  color: var(--error-color);
}

.collapsible-pre {
    width: 100%;
    white-space: pre-wrap;
    word-break: break-all;
    text-align: left;
}

.thumbnail-image {
  max-width: 100%;
  max-height: 100px;
  height: auto;
  border-radius: 0.5rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* AI Check Section */
.ai-check-row {
  display: flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  background-color: var(--background-color);
  margin-bottom: 1rem;
  margin-top: 1rem;
}

.ai-check-label {
  width: 33.333333%;
  font-size: 0.875rem;
}

.ai-check-label .font-bold {
    font-weight: 700;
}

.ai-check-buttons-container {
  width: 66.666667%;
  display: flex;
  justify-content: space-around;
  gap: 1rem;
}

.single-ai-check-div, .file1-ai-check-div, .file2-ai-check-div {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.ai-check-content {
  white-space: pre-wrap;
  word-break: break-word;
  width: 100%;
  margin-top: 0.5rem;
}

.ai-check-button {
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  transition: filter 0.2s;
  text-align: center;
  border: none;
  cursor: pointer;
  font-weight: 500;
  background: linear-gradient(135deg, var(--success-color), var(--primary-accent));
  color: var(--text-color-on-accent);
}

.ai-check-button:hover {
    filter: brightness(110%);
}

/* Report Download Section */
.report-download-section {
    padding: 1.5rem;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    margin-top: 2rem;
}

.dark-mode .report-download-section {
    background-color: #374151;
    border-color: var(--border-color);
}

.report-download-header {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 1rem;
  opacity: 0.9;
}

.report-buttons-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (min-width: 640px) {
  .report-buttons-container {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Forms & Buttons */
.form-input {
    width: 100%;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    border: 2px solid var(--border-color);
    transition: border-color 0.2s;
    background-color: var(--surface-color);
    color: var(--text-color);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-accent);
}

.dark-mode .form-input {
    background-color: #374151;
    border-color: var(--border-color);
}

.input-file {
  display: block;
  width: 100%;
  font-size: 0.875rem;
  color: var(--secondary-neutral);
}

.input-file::file-selector-button {
  margin-right: 1rem;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  border: 0;
  font-size: 0.875rem;
  font-weight: 600;
  background-color: var(--primary-accent-light);
  color: var(--primary-accent);
  cursor: pointer;
  transition: filter 0.2s;
}

.input-file::file-selector-button:hover {
  filter: brightness(95%);
}

.input-file-label {
    display: block;
    padding: 1rem;
    border: 2px dashed var(--border-color);
    border-radius: 0.5rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s;
}

.input-file-label.dragover {
    border-color: var(--primary-accent);
}

.input-file-button {
    margin-right: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    border: 0;
    font-size: 0.875rem;
    font-weight: 600;
    background-color: var(--primary-accent-light);
    color: var(--primary-accent);
    cursor: pointer;
    transition: filter 0.2s;
}

.input-file-button:hover {
    filter: brightness(95%);
}

.action-buttons-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 640px) {
  .action-buttons-container {
    flex-direction: row;
  }
}

.btn {
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  transition: filter 0.2s;
  text-align: center;
  border: none;
  cursor: pointer;
  font-weight: 500;
}

.btn:hover {
    filter: brightness(90%);
}

.btn-flex { flex: 1; }
.btn-large { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.btn-primary { background-color: var(--primary-accent); color: var(--text-color-on-accent); }
.btn-secondary { background-color: var(--secondary-neutral); color: var(--text-color-on-accent); }
.btn-muted { background-color: var(--border-color); color: var(--text-color); }
.btn-success { background-color: var(--success-color); color: var(--text-color); }
.btn-success:hover { filter: brightness(95%); }
.btn-disabled { background-color: var(--secondary-neutral); opacity: 0.5; cursor: not-allowed; }

.btn-clear {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    padding: 0.25rem;
    border-radius: 9999px;
    color: var(--secondary-neutral);
    cursor: pointer;
    background-color: transparent;
    border: none;
    transition: color 0.2s;
}

.btn-clear:hover { color: var(--text-color); }
.btn-clear:focus { outline: none; box-shadow: 0 0 0 2px var(--surface-color), 0 0 0 4px var(--secondary-neutral); }
.btn-clear-icon { color: var(--primary-accent); font-size: 1.25rem; transition: transform 0.5s; }
.btn-clear:hover .btn-clear-icon { transform: rotate(180deg); }

.btn-toggle-collapsible {
    display: inline-flex;
    align-items: center;
    font-size: 0.75rem;
    color: var(--primary-accent);
    transition: filter 0.2s;
    border-radius: 9999px;
    padding: 0.25rem 0.5rem;
    background-color: var(--primary-accent-light);
    border: none;
    cursor: pointer;
}

.btn-toggle-collapsible:hover { filter: brightness(95%); }
.dark-mode .btn-toggle-collapsible { background-color: var(--primary-accent-light); opacity: 0.8; }
.dark-mode .btn-toggle-collapsible:hover { opacity: 1; }

.explain-btn {
  display: flex;
  align-items: center;
  font-size: 0.75rem;
  border-radius: 9999px;
  padding: 0.25rem 0.5rem;
  border: none;
  cursor: pointer;
  color: var(--primary-accent);
  background-color: var(--primary-accent-light);
  transition: filter 0.2s;
}

.explain-btn:hover { filter: brightness(95%); }
.dark-mode .explain-btn { opacity: 0.8; }
.dark-mode .explain-btn:hover { opacity: 1; }
.explain-icon { margin-right: 0.25rem; }

/* Search Bar */
.search-bar-container {
  position: relative;
  margin-bottom: 1.5rem;
}

.search-input {
    padding-right: 2.5rem;
}

.search-icon-container {
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  display: flex;
  align-items: center;
  padding-right: 0.75rem;
  pointer-events: none;
}

.search-icon {
  height: 1.25rem;
  width: 1.25rem;
  color: var(--secondary-neutral);
}

/* Misc */
.hidden { display: none; }

#fixed-action-container {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 1rem;
}

.btn-scroll-to-top {
    width: 48px;
    height: 48px;
    padding: 0; /* Remove padding */
    display: flex; /* Add flex to center content */
    align-items: center; /* Center vertically */
    justify-content: center; /* Center horizontally */
    background-color: var(--primary-accent);
    color: var(--text-color-on-accent);
    border-radius: 9999px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: none;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-scroll-to-top:hover { filter: brightness(90%); }
.btn-scroll-to-top:focus { outline: none; box-shadow: 0 0 0 2px var(--surface-color), 0 0 0 4px var(--primary-accent); }
.scroll-to-top-icon { width: 1.5rem; height: 1.5rem; }

/* Toast Message */
#toast-container .toast-message {
    width: 350px;
    z-index: 1000;
}

.toast-message {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  background-color: #111827;
  color: #FFFFFF;
  border-radius: 0.5rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  animation: fade-in-up 0.5s;
}

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

.toast-close-btn {
    color: var(--text-color-on-accent);
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.2s;
}

.toast-close-btn:hover { color: #D1D5DB; }

/* Responsive Adjustments */
@media (max-width: 1080px) {
  #right-sidebar:not(.force-show) {
    width: 0;
    padding: 0;
    border-left: none;
  }
  .sidebar-toggle-container.right { display: flex; }
}

@media (max-width: 768px) {
    .exif-data-row-content, .metadata-row {
        flex-wrap: wrap;
    }
    .exif-data-row-content .tag-name-container,
    .metadata-row .metadata-label {
        margin-bottom: 0.5rem;
    }
    .exif-data-row-content .exif-value,
    .exif-data-row-content .collapsible-container,
    .metadata-row .metadata-value {
        text-align: center;
    }
}

@media (max-width: 480px) {
  #left-sidebar:not(.force-show) {
    width: 0;
    padding: 0;
    border-right: none;
  }
  .sidebar-toggle-container.left { display: flex; }
}
#theme-icon.fa-moon {
  filter: invert(1);
}
.light-mode-btn {
    background-color: #1F2937; /* Gray 800 */
}
.btn-theme-toggle {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-theme-toggle i {
  font-size: 1.25rem;
}

/* Drag and Drop Styling */
.file-input-container.dragover {
  border-color: var(--primary-accent);
  border-style: dashed;
  border-width: 2px;
}