/* ==========================================================================
   SLA Angle Calculator - Application Styles
   Framework: Pico CSS (vendor/pico.min.css)
   ========================================================================== */

/* Variables
   ========================================================================== */
:root {
  --color-primary: #1095c1;
  --color-error: #dc3545;
  --color-warning: #ffc107;
  --color-success: #28a745;
  --skeleton-base: #e5e7eb;
  --skeleton-highlight: #f3f4f6;
}

/* Reset & Alpine.js Integration
   ========================================================================== */
[x-cloak] {
  display: none !important;
}

/* Layout
   ========================================================================== */
main.container {
  max-width: 700px !important;
  margin: 1rem auto;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  main.container {
    margin: 1.5rem auto;
    padding: 0 1.5rem;
  }
}

/* Components
   ========================================================================== */

/* Badge */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1;
  border-radius: 9999px;
  background-color: var(--color-primary);
  color: white;
}

/* Error message */
.error-message {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.875rem;
  color: var(--color-error);
  animation: errorFadeIn 0.2s ease;
}

@keyframes errorFadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* States
   ========================================================================== */

/* Focus states for accessibility */
input:focus-visible,
button:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Error state */
.error,
[aria-invalid="true"] {
  border-color: var(--color-error) !important;
}

.error:focus,
[aria-invalid="true"]:focus {
  outline-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

/* Loading skeleton */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--skeleton-base) 25%,
    var(--skeleton-highlight) 50%,
    var(--skeleton-base) 75%
  );
  background-size: 200% 100%;
  animation: loading 1.5s ease-in-out infinite;
  border-radius: 4px;
  min-height: 1rem;
}

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

/* Utilities
   ========================================================================== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Skip link for keyboard users */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: 0.5rem 1rem;
  text-decoration: none;
  z-index: 1000;
  border-radius: 0 0 4px 0;
}

.skip-link:focus {
  top: 0;
  outline: 2px solid white;
  outline-offset: -2px;
}

.text-center {
  text-align: center;
}

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

.text-warning {
  color: var(--color-warning);
}

.text-success {
  color: var(--color-success);
}

/* Dark Mode
   ========================================================================== */
@media (prefers-color-scheme: dark) {
  :root {
    --skeleton-base: #374151;
    --skeleton-highlight: #4b5563;
  }
}

/* Responsive Adjustments
   ========================================================================== */
@media (max-width: 767px) {
  main.container {
    margin: 0.5rem auto;
  }
}

@media (min-width: 1024px) {
  main.container {
    margin: 1.5rem auto;
  }
}

/* Reduced Motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  .skeleton {
    animation: none;
    background: var(--skeleton-base);
  }

  .angle-diagram .model-surface,
  .angle-diagram .angle-arc {
    transition: none;
  }

  .error-message {
    animation: none;
  }
}

/* Printer Selector Row (with Layer Height)
   ========================================================================== */
.printer-selector-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: start;
  margin-bottom: 1.5rem;
}

.printer-selector-row .printer-selector {
  margin-bottom: 0;
}

.printer-selector-row .printer-selector > label {
  display: block;
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

.printer-selector-row .layer-height-control {
  max-width: 160px;
  margin: 0;
}

.printer-selector-row .layer-height-control label {
  white-space: nowrap;
}

@media (max-width: 600px) {
  .printer-selector-row {
    grid-template-columns: 1fr;
  }

  .printer-selector-row .layer-height-control {
    max-width: 100%;
  }
}

/* Printer Selector Dropdown
   ========================================================================== */
.printer-selector {
  margin-bottom: 1.5rem;
}

.dropdown-wrapper {
  position: relative;
}

/* Dropdown chevron indicator */
.dropdown-wrapper::after {
  content: '';
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--pico-muted-color, #6b7280);
  pointer-events: none;
}

.dropdown-wrapper input {
  padding-right: 2.5rem;
}

.dropdown-list {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  max-height: 300px;
  overflow-y: auto;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--pico-background-color, #fff);
  border: 1px solid var(--pico-form-element-border-color, #d1d5db);
  border-top: none;
  border-radius: 0 0 4px 4px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  z-index: 100;
}

.dropdown-item {
  padding: 0.75rem 1rem;
  cursor: pointer;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--pico-form-element-border-color, #e5e7eb);
}

.dropdown-item:last-child {
  border-bottom: none;
}

.dropdown-item:hover,
.dropdown-item.highlighted {
  background-color: var(--pico-primary-focus, rgba(16, 149, 193, 0.1));
}

.dropdown-item.highlighted {
  background-color: var(--color-primary);
  color: white;
}

.dropdown-item.highlighted .pixel-info {
  color: rgba(255, 255, 255, 0.8);
}

.dropdown-item.loading,
.dropdown-item.empty {
  color: var(--pico-muted-color, #6b7280);
  cursor: default;
  justify-content: center;
}

.dropdown-item.loading:hover,
.dropdown-item.empty:hover {
  background-color: transparent;
}

.dropdown-item.error {
  color: var(--color-error);
  cursor: default;
  justify-content: center;
  gap: 0.75rem;
}

/* Retry button */
.retry-btn {
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.retry-btn:hover {
  opacity: 0.9;
}

.retry-btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Loading Skeleton Items */
.loading-skeleton {
  padding: 0 !important;
  cursor: default !important;
}

.loading-skeleton:hover {
  background-color: transparent !important;
}

.skeleton-items {
  width: 100%;
}

.skeleton-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--pico-form-element-border-color, #e5e7eb);
}

.skeleton-item:last-child {
  border-bottom: none;
}

.skeleton-name {
  width: 55%;
  height: 1rem;
}

.skeleton-pixel {
  width: 18%;
  height: 1rem;
}

.printer-name {
  font-weight: 500;
}

.pixel-info {
  font-size: 0.875rem;
  color: var(--pico-muted-color, #6b7280);
  margin-left: auto;
}

/* Favorites Section */
.dropdown-section-header {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--pico-muted-color, #6b7280);
  background: var(--pico-card-background-color, #f3f4f6);
  cursor: default;
  border-bottom: 1px solid var(--pico-form-element-border-color, #e5e7eb);
}

.star-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  margin-right: 0.5rem;
  font-size: 1rem;
  color: var(--color-warning);
  transition: transform 0.15s ease;
  flex-shrink: 0;
}

.star-btn:hover {
  transform: scale(1.2);
}

.star-btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

.dropdown-item.favorite {
  background-color: rgba(255, 193, 7, 0.05);
}

/* Manual Input Section
   ========================================================================== */
.manual-input {
  margin-bottom: 1.5rem;
}

.manual-input .hint {
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  color: var(--pico-muted-color, #6b7280);
}

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

.manual-fields .field {
  display: flex;
  flex-direction: column;
}

.manual-fields label {
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

/* Results Section
   ========================================================================== */
.results {
  margin-bottom: 1rem;
  padding: 1rem;
  background: var(--pico-card-background-color, #f9fafb);
  border-radius: 8px;
  text-align: center;
}

.results h2 {
  margin-bottom: 0.75rem;
  font-size: 1.125rem;
}

.angle-display {
  margin-bottom: 1rem;
}

.angle-display .angle-value {
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.angle-display .angle-unit {
  font-size: 2rem;
  color: var(--pico-muted-color, #6b7280);
  vertical-align: super;
}

.layer-height-control {
  max-width: 200px;
  margin: 0 auto 1rem;
  text-align: left;
}

.layer-height-control label {
  display: block;
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

.pixel-info-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--pico-muted-color, #6b7280);
}

/* Non-square pixel dual layout */
.angle-display.dual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 1.5rem;
}

.angle-column {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.angle-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--pico-muted-color, #6b7280);
  margin-bottom: 0.25rem;
}

.angle-row {
  display: flex;
  align-items: baseline;
}

.angle-display.dual .angle-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.angle-display.dual .angle-unit {
  font-size: 1.25rem;
  color: var(--pico-muted-color, #6b7280);
  vertical-align: super;
}

.pixel-size {
  font-size: 0.875rem;
  color: var(--pico-muted-color, #6b7280);
  margin-top: 0.25rem;
}

.complementary-angle {
  font-size: 0.875rem;
  color: var(--pico-muted-color, #6b7280);
  margin-top: 0.5rem;
}

/* Square pixels single display */
.angle-display.single {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.angle-display.single .angle-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--pico-muted-color, #6b7280);
  margin-bottom: 0.25rem;
}

.angle-display.single .angle-row {
  display: flex;
  align-items: baseline;
}

/* Responsive: stack on mobile */
@media (max-width: 480px) {
  .angle-display.dual {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* SVG 2D Tilted Rectangle Angle Diagram (RC87 style)
   ========================================================================== */
.angle-diagram {
  display: block;
  width: 100%;
  max-width: 600px;
  height: auto;
  margin: 1.5rem auto 0;
}

/* Build plate - dark bar at bottom */
.angle-diagram .build-plate {
  fill: #1a1a1a;
}

/* Tilted rectangle block - gray fill */
.angle-diagram .tilted-block {
  fill: #6b7280;
  stroke: #4b5563;
  stroke-width: 1;
}

/* Green left edge highlight */
.angle-diagram .block-left-edge {
  stroke: #22c55e;
  stroke-width: 4;
  stroke-linecap: round;
}

/* Angle indicator line (parallel to tilted edge) */
.angle-diagram .angle-indicator-line {
  stroke: #9ca3af;
  stroke-width: 2;
  stroke-linecap: round;
}

/* Arc for complementary angle */
.angle-diagram .angle-arc {
  fill: none;
  stroke: #9ca3af;
  stroke-width: 1.5;
}

/* Vertical reference line */
.angle-diagram .vertical-reference-line {
  stroke: #9ca3af;
  stroke-width: 1;
}

/* Angle labels (left side - calculated angle) */
.angle-diagram .angle-label {
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  fill: var(--pico-color, #e5e7eb);
}

/* Complementary angle labels (right side) */
.angle-diagram .angle-label-complement {
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  fill: var(--pico-color, #e5e7eb);
}

/* Block axis labels (X/Y) */
.angle-diagram .block-axis-label {
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  fill: var(--pico-muted-color, #9ca3af);
  text-anchor: middle;
}

/* Dark Mode Dropdown
   ========================================================================== */
@media (prefers-color-scheme: dark) {
  .dropdown-list {
    background: var(--pico-background-color, #1f2937);
    border-color: var(--pico-form-element-border-color, #374151);
  }

  .dropdown-item {
    border-color: var(--pico-form-element-border-color, #374151);
  }

  .dropdown-section-header {
    background: var(--pico-card-background-color, #374151);
    border-color: var(--pico-form-element-border-color, #4b5563);
  }

  .dropdown-item.favorite {
    background-color: rgba(255, 193, 7, 0.1);
  }

  .results {
    background: var(--pico-card-background-color, #1f2937);
  }
}

/* Info Button
   ========================================================================== */
.printer-input-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.printer-input-row .dropdown-wrapper {
  flex: 1;
}

.info-btn {
  width: 2rem;
  height: 2rem;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: transparent;
  color: var(--pico-muted-color, #6b7280);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: color 0.15s ease;
  flex-shrink: 0;
  position: relative;
  top: -5px;
}

.info-btn:hover {
  color: var(--pico-color, #e5e7eb);
}

/* Modal
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 1000;
  animation: fadeIn 0.15s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  background: var(--pico-background-color, #fff);
  border-radius: 8px;
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  animation: slideIn 0.2s ease;
}

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

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--pico-form-element-border-color, #e5e7eb);
}

.modal-header h3 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
}

.modal-close {
  width: 2rem;
  height: 2rem;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  line-height: 1;
  background: transparent;
  border: none;
  color: var(--pico-muted-color, #6b7280);
  cursor: pointer;
  border-radius: 4px;
  transition: background-color 0.15s ease;
}

.modal-close:hover {
  background: var(--pico-form-element-border-color, #e5e7eb);
}

.modal-body {
  padding: 1.25rem;
}

/* Printer Specs in Modal */
.printer-specs {
  margin: 0;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--pico-form-element-border-color, #e5e7eb);
}

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

.spec-row dt {
  font-weight: 500;
  color: var(--pico-muted-color, #6b7280);
}

.spec-row dd {
  margin: 0;
  font-weight: 600;
  text-align: right;
  white-space: nowrap;
}

/* Dark Mode Modal */
@media (prefers-color-scheme: dark) {
  .modal {
    background: var(--pico-background-color, #1f2937);
  }

  .modal-header {
    border-color: var(--pico-form-element-border-color, #374151);
  }

  .modal-close:hover {
    background: var(--pico-form-element-border-color, #374151);
  }

  .spec-row {
    border-color: var(--pico-form-element-border-color, #374151);
  }
}

/* Site Footer
   ========================================================================== */
.site-footer {
  margin-top: 3rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--pico-form-element-border-color, #e5e7eb);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.site-footer p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--pico-muted-color, #6b7280);
}

.site-footer a {
  color: var(--color-primary);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

.github-icon {
  color: var(--pico-muted-color, #6b7280);
  transition: color 0.15s ease;
}

.github-icon:hover {
  color: var(--pico-color, #374151);
}

@media (prefers-color-scheme: dark) {
  .site-footer {
    border-color: var(--pico-form-element-border-color, #374151);
  }

  .github-icon:hover {
    color: var(--pico-color, #e5e7eb);
  }
}