/**
 * Main stylesheet for Typography Layout Calculator
 */

:root {
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-secondary: #64748b;
  --color-secondary-hover: #475569;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-border: #e2e8f0;
  --color-bg: #ffffff;
  --color-bg-light: #f8fafc;
  --color-success: #10b981;
  --font-family: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --border-radius: 0.5rem;
  --border-radius-sm: 0.375rem;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

* {
  box-sizing: border-box;
  font-family: var(--font-family);
}

body {
  font-family: var(--font-family);
  margin: 0;
  padding: var(--spacing-md);
  padding-bottom: calc(60px + var(--spacing-md)); /* Fixed footer height + spacing */
  background-color: #2a2a2a;
  color: #ffffff;
  line-height: 1.6;
  font-size: 0.75rem;
  box-sizing: border-box; /* Include padding in height calculations */
}

.fixed-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 40px;
  background-color: #2a2a2a;
  border-bottom: none;
  z-index: 1000;
  display: flex;
  align-items: center;
}

.fixed-header-content {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

@media (min-width: 1200px) {
  .fixed-header-content {
    padding: 0 var(--spacing-lg);
  }
}

.fixed-header-left {
  color: #ffffff;
  font-weight: 400;
  padding-top: 20px;
}

.fixed-header .read-me-link {
  padding-top: 20px;
}

.fixed-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: #ff0000;
  z-index: 1000;
  padding: var(--spacing-xs) 0;
  max-height: 40px;
  transition: max-height 0.3s ease-in-out, background-color 0.3s ease-in-out;
  overflow: hidden;
}

.fixed-footer.expanded {
  max-height: 50vh;
  overflow-y: auto;
  background-color: #ffffff;
}

.fixed-footer-content {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  flex-direction: column;
}

@media (min-width: 1200px) {
  .fixed-footer-content {
    padding: 0 var(--spacing-lg);
  }
}

.footer-menu-toggle {
  color: #000000;
  font-size: 0.5rem;
  font-weight: 400;
  cursor: pointer;
  padding: var(--spacing-xs) 0;
  margin-bottom: var(--spacing-xs);
  text-align: left;
  font-family: var(--font-family);
  transition: opacity 0.2s;
  margin: 0;
}

.footer-menu-toggle:hover {
  opacity: 0.7;
}

.footer-content-wrapper {
  display: none;
}

.fixed-footer.expanded .footer-content-wrapper {
  display: block;
}

.fixed-footer h1 {
  margin: 0;
  font-size: 0.5rem;
  font-weight: 400;
  font-family: var(--font-family);
  color: #000000;
  line-height: 1.6;
}

.fixed-footer i {
  font-style: italic;
  color: #000000;
}

.footer-nav {
  margin-top: var(--spacing-md);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
}

.footer-nav-item {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.footer-nav-link {
  color: #000000;
  font-size: 0.5rem;
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: #ffffff;
  text-underline-offset: 2px;
  font-family: var(--font-family);
  transition: opacity 0.2s, text-decoration-color 0.3s ease-in-out;
  margin-bottom: var(--spacing-xs);
}

.fixed-footer.expanded .footer-nav-link {
  text-decoration-color: #ff0000;
}

.footer-nav-link:hover {
  opacity: 0.7;
}

.footer-nav-description {
  margin: 0;
  font-size: 0.5rem;
  color: #000000;
  line-height: 1.6;
  font-family: var(--font-family);
}

.footer-sparkle-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  font-weight: 600;
  color: #000000;
  font-size: 0.5rem;
  font-family: var(--font-family);
}

.footer-sparkle-label .checkbox-input {
  width: auto;
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.app-wrapper {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: var(--spacing-lg);
  max-width: 100%;
}

.container {
  flex: 0 0 33.333%;
  max-width: 33.333%;
  margin: 0 auto;
  background-color: #2a2a2a;
  padding: 0;
  padding-right: var(--spacing-lg);
  color: #ffffff;
  overflow: visible;
}

.preview-wrapper {
  flex: 1;
}


header {
  margin-bottom: 0;
  margin-top: 0;
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid #555555;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xs);
  margin-top: 0;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.read-me-link,
.scale-indicator {
  color: #999999;
  text-decoration: none;
  cursor: pointer;
  transition: color 0.2s;
}

.read-me-link:hover {
  color: #ffffff;
}

h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 400;
  font-family: var(--font-family);
  color: #ffffff;
}

.unit-toggle-wrapper {
  display: flex;
  align-items: center;
  margin-bottom: 0;
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid #555555;
  margin-left: calc(-1 * var(--spacing-md));
  margin-right: calc(-1 * var(--spacing-md));
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

.unit-toggle-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  user-select: none;
}

.unit-option {
  font-weight: 500;
  min-width: 2rem;
  text-align: center;
  transition: color 0.2s, font-weight 0.2s;
}

.unit-option-mm {
  color: #ffffff;
  font-weight: 600;
}

.unit-option-em {
  color: #999999;
  font-weight: 500;
}

.unit-option-portrait,
.unit-option-landscape {
  display: flex;
  align-items: center;
  justify-content: center;
}

.unit-option-portrait .orient-icon,
.unit-option-landscape .orient-icon {
  display: block;
}

.unit-toggle-container {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
  border: none;
  border-radius: var(--border-radius-sm);
}

.unit-toggle-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 44px;
  height: 24px;
  margin: 0;
  padding: 0;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-color: #ff0000;
  border-radius: 12px;
  outline: none;
  cursor: pointer;
  transition: background-color 0.2s;
  z-index: 1;
  border: none;
  opacity: 1;
}

.unit-toggle-input:checked {
  background-color: var(--color-primary, #007bff);
}

.unit-toggle-slider {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background-color: white;
  border-radius: 50%;
  border: none;
  transition: left 0.2s;
  pointer-events: none;
  z-index: 2;
}

.unit-toggle-input:checked ~ .unit-toggle-slider {
  left: 22px;
}

/* When checked, mm option should be dimmed */
.unit-toggle-label:has(.unit-toggle-input:checked) .unit-option-mm {
  color: #999999;
  font-weight: 500;
}

/* When checked, em option should be highlighted */
.unit-toggle-label:has(.unit-toggle-input:checked) .unit-option-em {
  color: #ffffff;
  font-weight: 600;
}

/* Fallback for browsers that don't support :has() */
.unit-toggle-input:checked ~ .unit-toggle-slider ~ .unit-option-mm {
  color: #999999;
  font-weight: 500;
}

.unit-toggle-input:checked ~ .unit-toggle-slider ~ .unit-option-em {
  color: #ffffff;
  font-weight: 600;
}

.unit-description {
  margin: var(--spacing-xs) 0 var(--spacing-sm) 0;
  color: #666666;
  text-align: left;
  line-height: 1.4;
}

.subtitle {
  margin: 0;
  color: #999999;
  text-align: left;
}

h2 {
  margin: 0 0 var(--spacing-md) 0;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-family);
  color: #ffffff;
}

.visualization-section h2 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 400;
  font-family: var(--font-family);
  color: #ffffff;
}

.form-section {
  margin: 0;
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  padding-right: var(--spacing-md);
  padding-left: 0;
  background-color: transparent;
  border-top: 1px solid #555555;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-section:first-child {
  border-top: none;
}

.form-group {
  margin-bottom: 0;
  min-width: 0;
  width: 100%;
}

.page-label {
  font-weight: 500;
  color: #ffffff;
  margin-bottom: var(--spacing-xs);
  display: block;
}

.page-link {
  color: #ffffff;
  text-decoration: underline;
  cursor: pointer;
  transition: color 0.2s;
}

.page-link:hover {
  color: #cccccc;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: 0;
  width: 100%;
  clear: both;
  flex-shrink: 0;
}

/* Ensure equal column sizing for rows with 2 items */
.form-row > .form-group:first-child:nth-last-child(2),
.form-row > .form-group:last-child:nth-first-child(2) {
  grid-column: span 1;
}



/* Force single column for facing pages row - must override auto-fit */
.form-row.form-row-single-col {
  grid-template-columns: 1fr !important;
  display: grid !important;
  width: 100% !important;
  clear: both !important;
  flex-shrink: 0 !important;
  grid-column: 1 / -1 !important;
  margin-top: var(--spacing-md) !important;
}

@media (min-width: 1200px) {
  .form-row {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }
  
  /* Force single column for facing pages row */
  .form-row.form-row-single-col {
    grid-template-columns: 1fr !important;
    display: grid !important;
    width: 100% !important;
    clear: both !important;
    grid-column: 1 / -1 !important;
    margin-top: var(--spacing-md) !important;
  }
}

.form-row:last-child {
  margin-bottom: 0;
}

label {
  display: block;
  margin-bottom: 0;
  font-weight: 500;
  font-family: var(--font-family);
  color: #ffffff;
}

input[type="number"],
select,
textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid #555555;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-family);
  color: #ffffff;
  transition: border-color 0.2s, box-shadow 0.2s;
  background-color: #1a1a1a;
  box-sizing: border-box;
  font-size: 0.75rem;
}

.input-small {
  max-width: 100%;
  box-sizing: border-box;
}

textarea {
  resize: vertical;
  min-height: 80px;
  line-height: 1.6;
}

input[type="number"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  padding-right: calc(var(--spacing-xl) + var(--spacing-sm));
}

select option {
  padding: var(--spacing-sm);
}

.paper-size-select,
.font-select {
  font-weight: 500;
}

.helper-text {
  display: block;
  margin-top: 0;
  color: #999999;
  font-style: italic;
}

.grep-output .helper-text {
  margin-top: 0;
  margin-bottom: 0;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  font-weight: 500;
  color: #ffffff;
}

.checkbox-input {
  width: auto;
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.checkbox-label span {
  user-select: none;
}

.info-display {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-bg-light);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--color-border);
}

.info-label {
  font-weight: 500;
  color: var(--color-text);
}

.info-value {
  font-weight: 600;
  color: var(--color-primary);
  font-size: 0.75rem;
}

.label-with-action {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xs);
}

.text-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.text-action-separator {
  color: var(--color-text-light);
}

.btn-link {
  background: none;
  border: none;
  color: var(--color-primary);
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  font-weight: 500;
}

.btn-link:hover {
  color: var(--color-primary-hover);
  text-decoration: none;
}

button {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--border-radius-sm);
  font-weight: 500;
  font-family: var(--font-family);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  padding: var(--spacing-md) var(--spacing-xl);
  width: 100%;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
}

.btn-secondary:hover {
  background-color: var(--color-secondary-hover);
}


.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0;
  margin-bottom: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.scale-indicator {
  font-size: 0.75rem;
  font-weight: 500;
}

.btn-export {
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--border-radius-sm);
  font-weight: 500;
  font-size: 0.75rem;
  cursor: pointer;
  transition: background-color 0.2s;
}

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

.btn-export:active {
  transform: translateY(1px);
}

.layer-controls {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-xs) 0;
  flex-wrap: wrap;
}

.layer-checkbox {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  color: #ffffff;
  user-select: none;
}

.layer-checkbox input[type="checkbox"] {
  width: auto;
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.layer-checkbox span {
  font-weight: 500;
}

.column-span-checkboxes {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-top: var(--spacing-xs);
}

.slider-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xs);
}

.slider-input {
  flex: 1;
  height: 4px;
  background: #666666;
  border-radius: 2px;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.slider-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: #ffffff;
  border-radius: 50%;
  cursor: pointer;
  border: none;
  outline: none;
}

.slider-input::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: #ffffff;
  border-radius: 50%;
  cursor: pointer;
  border: none;
  outline: none;
}

.slider-value {
  min-width: 2rem;
  text-align: center;
  color: #ffffff;
  font-weight: 400;
}


.visualization-section {
  margin-top: 0;
  padding: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: none;
  background-color: transparent;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  width: 100%;
  display: flex;
  flex-direction: column;
  color: #ffffff;
}

.visualization-container {
  padding: var(--spacing-md);
  background-color: transparent;
  border-radius: var(--border-radius-sm);
  display: flex;
  justify-content: flex-start;
  align-items: flex-start;
  flex: 1 1 0;
  min-height: 300px;
  overflow: hidden;
  position: relative;
}

.letterpress-decoration {
  position: fixed;
  opacity: 1;
  filter: grayscale(100%);
  pointer-events: none;
  z-index: 10000;
  max-width: 500px;
  max-height: 500px;
  object-fit: contain;
  transition: opacity 0.3s ease-out;
}

.letterpress-emoji {
  filter: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 200px;
  height: 200px;
}

.page-visualization {
  display: block;
  /* Width and height are set dynamically based on orientation */
  /* For portrait: height=100%, width=auto (fits by height) */
  /* For landscape: width=100%, height=100% (fits by width) */
}

.page-visualization .page-dimensions {
  font-weight: 600;
  fill: #ffffff;
}

.page-visualization .margin-label {
  font-size: 9px;
  fill: #999999;
}

.specification-section {
  margin-top: 0;
  padding: var(--spacing-md);
  background-color: #2a2a2a;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  width: 100%;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.specification-section h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  font-family: var(--font-family);
  color: #ffffff;
}

.bringhurst-section h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-family);
  color: #ffffff;
}

.bringhurst-section p {
  margin: 0 0 var(--spacing-sm) 0;
  color: #ffffff;
  font-size: 0.75rem;
  line-height: 1.6;
}

.bringhurst-section p:last-child {
  margin-bottom: 0;
}

.bringhurst-label {
  font-weight: 500;
  color: #ffffff;
}

.bringhurst-value {
  font-weight: 600;
  color: #ffffff;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
  table-layout: fixed;
  word-wrap: break-word;
}

.spec-table tr {
  border-bottom: 1px solid #555555;
}

.spec-table tr:last-child {
  border-bottom: none;
}

.spec-label {
  padding: var(--spacing-xs) var(--spacing-sm) var(--spacing-xs) 0;
  vertical-align: top;
  width: 8rem;
  max-width: 8rem;
  color: #999999;
  font-weight: 500;
  overflow-wrap: break-word;
}

.spec-value {
  padding: var(--spacing-xs) 0;
  color: #ffffff;
  font-weight: 600;
  vertical-align: top;
  word-wrap: break-word;
  overflow-wrap: break-word;
  font-variant-numeric: tabular-nums;
}


/* Desktop layout - side by side with independent scrolling */
@media (min-width: 601px) {
  * {
    box-sizing: border-box;
  }

  html {
    height: 100% !important;
    overflow: hidden !important;
    position: fixed !important;
    width: 100% !important;
  }
  
  body {
    margin: 0 !important;
    padding: 0 !important;
    height: 100vh !important;
    width: 100vw !important;
    overflow: hidden !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
  }

  .app-wrapper {
    position: fixed !important;
    top: var(--spacing-lg) !important;
    left: 0 !important;
    right: 0 !important;
    bottom: calc(60px + var(--spacing-lg)) !important;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0;
    display: flex !important;
    flex-direction: row !important;
    align-items: stretch !important;
    gap: var(--spacing-xl);
    overflow: hidden !important;
    height: auto !important;
  }

  .container {
    flex: 0 0 33.333%;
    max-width: 33.333%;
    margin: 0;
    padding: 0;
    padding-left: var(--spacing-xl);
    padding-right: var(--spacing-xl);
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior-y: contain;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: #555555 #2a2a2a;
  }
  
  /* Webkit scrollbar styling */
  .container::-webkit-scrollbar {
    width: 8px;
  }
  
  .container::-webkit-scrollbar-track {
    background: #2a2a2a;
  }
  
  .container::-webkit-scrollbar-thumb {
    background: #555555;
    border-radius: 4px;
  }
  
  .container::-webkit-scrollbar-thumb:hover {
    background: #666666;
  }

  .preview-wrapper {
    flex: 1;
    min-width: 0;
    min-height: 0;
    overflow-y: auto;
    overflow-x: visible;
    overscroll-behavior-y: contain;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: #555555 #2a2a2a;
  }
  
  /* Webkit scrollbar styling for preview-wrapper */
  .preview-wrapper::-webkit-scrollbar {
    width: 8px;
  }
  
  .preview-wrapper::-webkit-scrollbar-track {
    background: #2a2a2a;
  }
  
  .preview-wrapper::-webkit-scrollbar-thumb {
    background: #555555;
    border-radius: 4px;
  }
  
  .preview-wrapper::-webkit-scrollbar-thumb:hover {
    background: #666666;
  }

  .visualization-section {
    flex: 1 1 auto;
    margin-top: 0;
    padding-top: var(--spacing-md);
    border-top: none;
    display: flex;
    flex-direction: column;
    min-height: 0;
  }
  
  .specification-section {
    flex: 0 0 auto;
    margin-top: 0;
  }

  .visualization-container {
    flex: 1;
    min-height: 0;
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    overflow: hidden;
  }
}

/* Mobile - stack vertically */
@media (max-width: 600px) {
  body {
    padding: var(--spacing-md);
    padding-bottom: calc(60px + var(--spacing-md));
  }

  .app-wrapper {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .container {
    width: 100%;
    max-width: 100%;
    padding: 0 var(--spacing-md);
    padding-right: 0;
  }

  .preview-wrapper {
    width: 100%;
    max-width: 100%;
  }

  .visualization-section {
    border-top: 1px solid #555555;
  }

  h1 {
    font-size: 1.5rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

/* Responsive design - merged into mobile breakpoint */

@media (max-width: 480px) {
  .container {
    width: 100%;
    max-width: 100%;
    padding: 0 var(--spacing-md);
  }
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
}

.modal.show {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background-color: #000000;
  border: 1px solid #333333;
  border-radius: var(--border-radius);
  padding: var(--spacing-xl);
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid #333333;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 400;
  color: #ffffff;
}

.modal-close {
  background: none;
  border: none;
  color: #999999;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s;
}

.modal-close:hover {
  color: #ffffff;
}

.modal-body {
  color: #ffffff;
  line-height: 1.6;
}

.modal-intro {
  margin: 0 0 var(--spacing-lg) 0;
  color: #ffffff;
  font-size: 0.95rem;
}

.modal-section {
  margin: 0 0 var(--spacing-lg) 0;
}

.modal-section-title {
  margin: 0 0 var(--spacing-sm) 0;
  font-size: 1rem;
  font-weight: 400;
  color: #ffffff;
}

.modal-section-text {
  margin: 0 0 var(--spacing-sm) 0;
  color: #cccccc;
  line-height: 1.6;
}

.modal-section-links {
  margin: 0;
  line-height: 1.6;
}

.modal-section-links a {
  color: #999999;
  text-decoration: none;
  border-bottom: 1px solid #555555;
  transition: color 0.2s, border-color 0.2s;
}

.modal-section-links a:hover {
  color: #ffffff;
  border-bottom-color: #555555;
}

/* Grep Generator Styles */
.grep-output {
  padding: 0;
  padding-bottom: 0;
  background-color: #2a2a2a;
  border-radius: var(--border-radius-sm);
  min-height: 200px;
  margin-bottom: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.grep-pattern {
  margin-bottom: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.grep-label {
  display: block;
  margin-bottom: 0;
  color: #999999;
}

.grep-code {
  display: block;
  padding: var(--spacing-md);
  background-color: #1a1a1a;
  border: 1px solid #555555;
  border-radius: var(--border-radius-sm);
  font-family: 'IBM Plex Mono', monospace;
  color: #ffffff;
  word-break: break-all;
  margin-bottom: 0;
}

.btn-copy {
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: #333333;
  color: #ffffff;
  border: 1px solid #555555;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-family);
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-copy:hover {
  background-color: #444444;
}

.btn-copy:active {
  background-color: #222222;
}

/* Syntax Explanation Styles */
.syntax-explanation {
  margin-top: 0;
  padding: var(--spacing-md);
  background-color: #1a1a1a;
  border: 1px solid #555555;
  border-radius: var(--border-radius-sm);
  overflow-x: auto;
  max-width: 100%;
  box-sizing: border-box;
}

.syntax-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 400;
  font-family: var(--font-family);
  color: #ffffff;
}

.syntax-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
  table-layout: fixed;
  word-wrap: break-word;
}

.syntax-table tr {
  border-bottom: 1px solid #555555;
}

.syntax-table tr:last-child {
  border-bottom: none;
}

.syntax-code {
  padding: var(--spacing-xs) var(--spacing-sm) var(--spacing-xs) 0;
  vertical-align: top;
  width: 8rem;
  max-width: 8rem;
  overflow-wrap: break-word;
}

.syntax-code code {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.9rem;
  color: #ffffff;
  background-color: #1a1a1a;
  padding: 2px 6px;
  border-radius: 3px;
}

.syntax-description {
  padding: var(--spacing-xs) 0;
  color: #cccccc;
  line-height: 1.6;
  vertical-align: top;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.syntax-item code {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.9rem;
  color: #ffffff;
  background-color: #1a1a1a;
  padding: 2px 6px;
  border-radius: 3px;
}