/* ==========================================================================
   VARIABLES & THEMES
   ========================================================================== */
:root {
  --bg-main: #F7F5F2;
  --bg-surface: #FAF9F7;
  --bg-muted: #EFEBE6;
  --bg-hover: #E7E5E1;
  --text-primary: #2B2929;
  --text-secondary: #555555;
  --text-muted: #A8A49E;
  --border-input: #A8A49E;
  --border-dropzone: #A8A49E;
  --accent-primary: #3984FF;
  --accent-hover: #0050D0;
  --link-primary: #3984FF;
  --link-hover: #0050D0;
  --accent-success: #3FC380;
  --accent-danger: #FF4D4D;
  --accent-donate: #FA551E;
  --slider-bg: #CCC;
  --slider-checked: #6497E7;
  --scrollbar-thumb: #888888;
  --scrollbar-thumb-hover: #2B2929;
  --tooltip-text: #F7F5F2;
}

[data-theme="dark"] {
  --bg-main: #2B2929;
  --bg-surface: #161313;
  --bg-muted: #3E3C3B;
  --bg-hover: #3E3C3B;
  --text-primary: #F7F5F2;
  --text-secondary: #C2BDB6;
  --text-muted: #777370;
  --border-input: #3E3C3B;
  --border-dropzone: #3E3C3B;
  --accent-primary: #3984FF;
  --accent-hover: #0050D0;
  --link-primary: #B4C8E1;
  --link-hover: #8FA9CE;
  --slider-bg: #555555;
  --scrollbar-thumb: #777370;
  --scrollbar-thumb-hover: #C2BDB6;
}

/* ==========================================================================
   GLOBAL STYLE & LAYOUT
   ========================================================================== */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-main);
  color: var(--text-primary);
  transition: background 0.2s, color 0.2s;
  min-height: 100vh;
  display: flex;
  justify-content: center;
}

a {
  color: var(--link-primary);
}

.app-container {
  width: 100%;
  max-width: 1200px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 25px;
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--bg-muted);
  padding-bottom: 15px;
}

.header-logo-img {
  width: auto;
  height: 3em;
  flex-shrink: 0;
}

/* ==========================================================================
   WORKSPACE SECTIONS & HEADERS
   ========================================================================== */
.workspace-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.section-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 16px;
  font-weight: 600;
}

.section-title .subtitle {
  font-size: 13px;
  font-weight: normal;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.column-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 32px;
}

.label-text {
  font-size: 14px;
  font-weight: 500;
}

.header-buttons {
  display: flex;
  gap: 8px;
}

.counter-badge {
  background: var(--accent-primary);
  color: white;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 10px 2px 10px;
  border-radius: 20px;
  transition: all 0.2s ease;
}

/* ==========================================================================
   GRID SYSTEMS
   ========================================================================== */
.input-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
}

@media (max-width: 768px) {
  .input-grid {
    grid-template-columns: 1fr;
  }
}

.outputs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 768px) {
  .outputs-grid {
    grid-template-columns: 1fr;
  }
}

.output-column {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* ==========================================================================
   6. TEXTAREAS & WRAPPERS
   ========================================================================== */
.textarea-wrapper {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border-input);
  border-radius: 8px;
  padding: 10px;
}

.main-input {
  border-color: var(--accent-primary);
}

textarea {
  width: 100%;
  background: none;
  border: none;
  outline: none;
  font-size: 14px;
  color: var(--text-secondary);
  font-family: monospace;
  resize: vertical;
  box-sizing: border-box;
}

/* ==========================================================================
   BUTTONS & ACTIONS
   ========================================================================== */
.btn-action {
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 500;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-muted);
  color: var(--text-primary);
  transition: all 0.2s;
}

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

.btn-action:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--bg-muted);
  color: var(--text-muted);
}

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

.btn-batch {
  background: var(--accent-primary);
  color: white;
}

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

.btn-action.active-tooltip {
  background: var(--accent-success) !important;
  color: white !important;
}

/* ==========================================================================
   DROP ZONE
   ========================================================================== */
.drop-zone {
  border: 2px dashed var(--border-dropzone);
  border-radius: 8px;
  padding: 20px;
  text-align: center;
  background: var(--bg-surface);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 10px;
  transition: all 0.2s;
  flex: 1;
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--accent-primary);
  background: var(--bg-muted);
}

.drop-icon {
  font-size: 32px;
  color: var(--text-muted);
}

.drop-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ==========================================================================
   GLOBAL EXPORT
   ========================================================================== */
.global-actions-bar {
  display: flex;
  justify-content: left;
  margin-top: 24px;
}

.btn-global-export {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 28px !important;
  font-size: 14px !important;
  font-weight: 600;
  border-radius: 8px;
  background-color: var(--accent-primary);
  color: white !important;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.btn-global-export:hover:not(:disabled) {
  background-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-global-export:active:not(:disabled) {
  transform: translateY(0);
}

.btn-global-export:disabled {
  background-color: var(--bg-muted);
  color: var(--text-muted) !important;
  cursor: not-allowed;
  box-shadow: none;
}

/* ==========================================================================
   THEME TOGGLE & FOOTER
   ========================================================================== */
.header-controls {
  display: flex;
  align-items: center;
  padding-right: 2px;
}

.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  flex-direction: row-reverse;
  gap: 12px;
  cursor: pointer;
}

.toggle input {
  display: none;
}

.slider {
  position: relative;
  width: 40px;
  height: 24px;
  background-color: var(--slider-bg);
  transition: 0.4s;
  border-radius: 24px;
  flex-shrink: 0;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.4s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--slider-checked);
}

input:checked + .slider:before {
  transform: translateX(16px);
}

.label {
  font-size: 13px;
  color: var(--text-primary);
  white-space: nowrap;
  user-select: none;
}

.app-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
  border-top: 1px solid var(--bg-muted);
  padding-top: 15px;
  font-size: 13px;
  color: var(--text-muted);
}

@media (max-width: 600px) {
  .app-footer {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }
}

.donate-link {
  color: var(--text-primary);
  font-weight: 500;
  background: var(--bg-muted);
  padding: 6px 12px;
  border-radius: 4px;
  text-decoration: none;
}

.icon-donate {
  color: var(--accent-donate);
}

textarea::-webkit-scrollbar {
  width: 8px;
}

textarea::-webkit-scrollbar-track {
  background: var(--bg-main);
}

textarea::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 4px;
}

textarea::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}

/* ==========================================================================
   LANGUAGE SWITCHER
   ========================================================================== */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-right: 20px;
  font-size: 13px;
}

.lang-btn {
  color: var(--text-secondary) !important;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s ease;
}

.lang-btn:hover {
  color: var(--text-primary) !important;
}

.lang-btn.active {
  color: var(--accent-primary) !important;
  font-weight: 700;
  cursor: default;
  pointer-events: none;
}

.lang-divider {
  color: var(--text-muted);
  font-size: 11px;
  user-select: none;
}

/* ==========================================================================
   FAQ SECTION
   ========================================================================== */
.intro {
  text-align: center;
  *margin-bottom: 40px;
}

.text-4xl {
  font-size: 2.25rem;
  line-height: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  margin-bottom: 15px;
  color: var(--text-primary);
}

.text-xl {
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.max-w-2xl {
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

.info-card {
  background: var(--bg-surface);
  border: 1px solid var(--bg-muted);
  border-radius: 12px;
  padding: 30px;
  margin-bottom: 30px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
}

.info-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 0;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.info-card-title i {
  color: var(--accent-primary);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

@media (max-width: 768px) {
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

.step-card {
  display: flex;
  gap: 15px;
  align-items: flex-start;
}

.step-num {
  background: var(--bg-muted);
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 600;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  *border: 1px solid var(--border-input);
}

.step-content h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 8px 0;
  color: var(--text-primary);
}

.step-content p {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-secondary);
  margin: 0;
}

.table-container {
  overflow-x: auto;
  border: 1px solid var(--bg-hover);
  border-radius: 8px;
}

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

.format-table th, 
.format-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--bg-hover);
}

.format-table th {
  background: var(--bg-muted);
  font-weight: 600;
  color: var(--text-primary);
}

.format-table tbody tr:last-child td {
  border-bottom: none;
}

.format-table code {
  background: var(--bg-muted);
  padding: 4px 8px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--accent-primary);
  display: inline-block;
  word-break: break-all;
}

.chrome-extension-card {
  line-height: 1.5;
  margin-top: 20px;
  border-left: 5px solid var(--accent-primary);
  background: var(--bg-surface);
}

.extension-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
}

@media (max-width: 768px) {
  .extension-content {
    flex-direction: column;
    text-align: center;
    gap: 20px;
  }
}

.extension-text h3 {
  margin-top: 0;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
}

@media (min-width: 769px) {
  .extension-text h3 {
    justify-content: flex-start;
  }
}

.extension-text p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.btn-extension {
  background-color: var(--accent-primary);
  color: white;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-extension:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

/* ==========================================================================
   MOBILE RESPONSIVE FOR FORMAT TABLE
   ========================================================================== */
@media (max-width: 768px) {
  .format-table, 
  .format-table thead, 
  .format-table tbody, 
  .format-table th, 
  .format-table td, 
  .format-table tr { 
    display: block; 
    width: 100%;
    box-sizing: border-box;
  }
  
  .format-table thead {
    display: none;
  }
  
  .format-table tbody tr {
    padding: 20px 15px;
    border-bottom: 1.5px dashed var(--bg-hover);
  }
  
  .format-table tbody tr:last-child {
    border-bottom: none;
  }
  

  .format-table td {
    padding: 0;
    border: none;
    margin-bottom: 12px;
  }
  
  .format-table td:last-child {
    margin-bottom: 0;
  }

  .format-table td:nth-child(1) {
    margin-bottom: 10px;
  }
  
  .format-table td:nth-child(2) {
    background: var(--bg-muted);
    padding: 10px 12px;
    border-radius: 6px;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
  }
  
  .format-table td:nth-child(2) code {
    background: none;
    padding: 0;
    font-size: 0.8rem;
    color: var(--accent-primary);
  }
  
  .format-table td:nth-child(3) {
    font-size: 0.85rem;
    line-height: 1.4;
    color: var(--text-secondary);
    padding-top: 4px;
  }
  
  .table-container {
    border: none;
  }
}

.badge {
  display: inline-block;
  padding: 4px 8px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  border-radius: 6px;
  white-space: nowrap;
}

.badge-original {
  background-color: var(--bg-muted);
  color: var(--text-secondary);
}

.badge-download {
  background-color: rgba(57, 132, 255, 0.1);
  color: var(--accent-primary);
}

.badge-view {
  background-color: rgba(63, 195, 128, 0.1);
  color: var(--accent-success);
}

.faq-grid-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

@media (max-width: 868px) {
  .faq-grid-two-col {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

.features-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.features-list li {
  display: flex;
  gap: 15px;
  align-items: flex-start;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.features-list strong {
  color: var(--text-primary);
  display: block;
  margin-bottom: 3px;
}

.feature-icon {
  font-size: 1.25rem;
  color: var(--accent-primary);
  margin-top: 3px;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.success-color {
  color: var(--accent-success) !important;
}

/* ==========================================================================
   PRIVACY
   ========================================================================== */
.privacy-card {
  line-height: 1.6;
}

.privacy-card h3 {
  margin-top: 25px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--bg-muted);
  padding-bottom: 5px;
}

.privacy-card p,
.privacy-card li {
  color: var(--text-secondary);
  font-size: 14px;
}

.privacy-card ul {
  padding-left: 20px;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--link-primary);
  font-weight: 500;
  margin-bottom: 15px;
  transition: color 0.2s;
}

.btn-back:hover {
  color: var(--link-hover);
}