/*
  FastConvertTools shared UI components.
  This file is loaded after page-level styles so it can normalize legacy pages
  without changing conversion logic.
*/

:root {
  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-md: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --line-tight: 1.15;
  --line-body: 1.6;
  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 14px 40px rgba(0, 0, 0, 0.16);
  --shadow-focus: 0 0 0 4px rgba(255, 92, 0, 0.22);
  --duration-fast: 120ms;
  --duration-base: 180ms;
  --duration-slow: 260ms;
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --z-nav: 50;
  --z-menu: 60;
  --z-toast: 100;
  --breakpoint-sm: 390px;
  --breakpoint-xs: 360px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1100px;
  --icon-sm: 16px;
  --icon-md: 20px;
  --icon-lg: 28px;
  --icon-xl: 40px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

:focus-visible {
  outline: 3px solid var(--color-brand);
  outline-offset: 3px;
  box-shadow: var(--shadow-focus);
}

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

.site-nav {
  z-index: var(--z-nav);
}

.fct-breadcrumb {
  max-width: 1100px;
  margin: var(--space-5) auto 0;
  padding: 0 24px;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.fct-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

.fct-breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.fct-breadcrumb li + li::before {
  content: "/";
  color: color-mix(in srgb, var(--color-text-muted) 60%, transparent);
}

.fct-breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.fct-breadcrumb a:hover,
.fct-breadcrumb a:focus-visible {
  color: var(--color-text);
}

.fct-breadcrumb [aria-current="page"] {
  color: var(--color-text);
  font-weight: 700;
}

#theme-toggle,
.theme-toggle,
.menu-toggle,
.btn-primary,
.btn-secondary,
.upload-btn,
.convert-btn,
.download-btn,
.retry-btn,
.related-card,
.faq-item summary {
  transition:
    background var(--duration-base) var(--ease-standard),
    border-color var(--duration-base) var(--ease-standard),
    color var(--duration-base) var(--ease-standard),
    transform var(--duration-base) var(--ease-standard),
    box-shadow var(--duration-base) var(--ease-standard);
}

.btn-primary,
.btn-secondary,
.convert-btn,
.download-btn,
.retry-btn,
.upload-btn {
  min-height: 44px;
}

.tool-card {
  max-width: 760px !important;
  margin-inline: auto !important;
  border-radius: var(--radius-xl) !important;
  box-shadow: var(--shadow-sm);
}

.fct-upload,
.upload-zone {
  position: relative !important;
  display: grid !important;
  gap: var(--space-3) !important;
  place-items: center !important;
  min-height: 230px !important;
  padding: clamp(32px, 8vw, 56px) var(--space-6) !important;
  border: 2px dashed color-mix(in srgb, var(--color-brand) 28%, var(--color-border)) !important;
  border-radius: var(--radius-lg) !important;
  background:
    linear-gradient(180deg, rgba(255, 92, 0, 0.08), rgba(255, 92, 0, 0.02)),
    var(--color-bg-2) !important;
  color: var(--color-text) !important;
  text-align: center !important;
  cursor: pointer !important;
  overflow: hidden;
  isolation: isolate;
}

.fct-upload::after,
.upload-zone::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(90deg, transparent, rgba(255, 92, 0, 0.16), transparent);
  opacity: 0;
  transform: translateX(-60%);
  pointer-events: none;
}

.fct-upload:hover,
.upload-zone:hover,
.fct-upload.drag-over,
.upload-zone.drag-over,
.fct-upload.is-dragging,
.upload-zone.is-dragging {
  border-color: var(--color-brand) !important;
  background:
    linear-gradient(180deg, rgba(255, 92, 0, 0.13), rgba(255, 92, 0, 0.04)),
    var(--color-bg-2) !important;
  transform: translateY(-1px);
}

.fct-upload.is-dragging::after,
.upload-zone.is-dragging::after,
.fct-upload[data-state="validating"]::after,
.upload-zone[data-state="validating"]::after,
.fct-upload[data-state="uploading"]::after,
.upload-zone[data-state="uploading"]::after,
.fct-upload[data-state="processing"]::after,
.upload-zone[data-state="processing"]::after {
  opacity: 1;
  animation: fct-sheen 900ms linear infinite;
}

.fct-upload[data-state="completed"],
.upload-zone[data-state="completed"] {
  border-color: rgba(22, 163, 74, 0.62) !important;
  background:
    linear-gradient(180deg, rgba(22, 163, 74, 0.13), rgba(22, 163, 74, 0.04)),
    var(--color-bg-2) !important;
}

.fct-upload[data-state="failed"],
.upload-zone[data-state="failed"] {
  border-color: rgba(220, 38, 38, 0.62) !important;
  background:
    linear-gradient(180deg, rgba(220, 38, 38, 0.13), rgba(220, 38, 38, 0.04)),
    var(--color-bg-2) !important;
}

.upload-zone input[type="file"],
.fct-upload input[type="file"] {
  position: absolute !important;
  inset: 0 !important;
  width: 100% !important;
  height: 100% !important;
  opacity: 0 !important;
  cursor: pointer !important;
}

.upload-icon {
  width: var(--icon-xl);
  height: var(--icon-xl);
  display: inline-grid !important;
  place-items: center;
  border-radius: var(--radius-md);
  background: var(--color-brand-dim);
  color: var(--color-brand);
  font-size: 0 !important;
}

.upload-icon::before {
  content: "";
  width: 22px;
  height: 22px;
  border: 2px solid currentColor;
  border-radius: var(--radius-xs);
  box-shadow: 8px 8px 0 -4px currentColor;
}

.upload-title {
  font-family: var(--font-head) !important;
  font-size: clamp(18px, 4vw, 22px) !important;
  font-weight: 800 !important;
  color: var(--color-text) !important;
}

.upload-sub,
.file-size,
.progress-status {
  color: var(--color-text-muted) !important;
}

.upload-btn {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  border: 1px solid var(--color-border) !important;
  border-radius: var(--radius-full) !important;
  padding: 10px 18px !important;
  background: var(--color-text) !important;
  color: var(--color-bg) !important;
  font-weight: 700 !important;
}

.fct-upload-meta,
.fct-trust-panel,
.fct-privacy-notice,
.fct-upload-intelligence {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-2);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  line-height: var(--line-body);
}

.fct-upload-meta {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.fct-upload-meta span,
.fct-trust-panel span,
.fct-privacy-notice span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.fct-upload-meta strong,
.fct-trust-panel strong,
.fct-privacy-notice strong,
.fct-upload-intelligence strong {
  color: var(--color-text);
}

.fct-upload-intelligence {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  display: none;
}

.fct-upload-intelligence.show {
  display: grid;
}

.file-selected {
  align-items: center !important;
  gap: var(--space-4) !important;
  border-radius: var(--radius-md) !important;
  background: var(--color-bg-2) !important;
  border: 1px solid var(--color-border) !important;
  color: var(--color-text) !important;
}

.file-name {
  color: var(--color-text) !important;
}

.convert-btn,
.download-btn {
  width: 100% !important;
  border: 0 !important;
  border-radius: var(--radius-md) !important;
  font-family: var(--font-head) !important;
  font-weight: 800 !important;
  letter-spacing: 0 !important;
}

.convert-btn {
  background: var(--color-brand) !important;
  color: #fff !important;
}

.convert-btn:hover,
.download-btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.convert-btn:disabled,
.download-btn[aria-disabled="true"] {
  cursor: not-allowed !important;
  opacity: 0.62 !important;
  transform: none !important;
}

.progress-wrap {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: var(--color-bg-2);
}

.fct-stage-progress {
  display: grid;
  gap: var(--space-4);
}

.fct-stage-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  list-style: none;
  margin: 0 0 var(--space-3);
  padding: 0;
}

.fct-stage-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

.fct-stage-dot {
  width: 9px;
  height: 9px;
  border-radius: var(--radius-full);
  background: color-mix(in srgb, var(--color-text) 24%, transparent);
  flex: 0 0 auto;
}

.fct-stage-item.is-active {
  color: var(--color-text);
}

.fct-stage-item.is-active .fct-stage-dot {
  background: var(--color-brand);
  box-shadow: 0 0 0 4px var(--color-brand-dim);
}

.fct-stage-item.is-done .fct-stage-dot {
  background: #16a34a;
}

.fct-progress-track {
  height: 8px;
  overflow: hidden;
  border-radius: var(--radius-full);
  background: color-mix(in srgb, var(--color-text) 10%, transparent);
}

.fct-progress-bar {
  position: relative;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-brand), #ff8a3d);
  width: 42%;
  min-width: 90px;
  animation: fct-indeterminate 1.1s ease-in-out infinite alternate;
}

.fct-progress-copy {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.progress-label {
  color: var(--color-text) !important;
  font-weight: 700 !important;
}

.progress-bar-bg {
  background: color-mix(in srgb, var(--color-text) 10%, transparent) !important;
}

.progress-bar {
  background: var(--color-brand) !important;
}

.success-msg,
.error-msg {
  border-radius: var(--radius-md) !important;
  padding: var(--space-4) !important;
  line-height: var(--line-body) !important;
}

.success-msg {
  border: 1px solid rgba(22, 163, 74, 0.32) !important;
  background: rgba(22, 163, 74, 0.12) !important;
  color: color-mix(in srgb, #16a34a 72%, var(--color-text)) !important;
}

.fct-success-panel,
.fct-failure-panel,
.fct-recommendations {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  background: var(--color-bg-2);
}

.fct-diff-panel,
.fct-preview-panel,
.fct-history-panel,
.fct-privacy-dashboard,
.fct-format-compare,
.fct-collection-panel,
.fct-quality-panel,
.fct-learning-panel {
  display: grid;
  gap: var(--space-4);
  margin: var(--space-5) auto 0;
  max-width: 760px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  background: var(--color-bg-2);
  color: var(--color-text);
}

.fct-diff-panel h2,
.fct-diff-panel h3,
.fct-preview-panel h3,
.fct-history-panel h3,
.fct-privacy-dashboard h3,
.fct-format-compare h3,
.fct-collection-panel h3,
.fct-quality-panel h3,
.fct-learning-panel h3 {
  font-family: var(--font-head);
  margin: 0;
  color: var(--color-text);
}

.fct-diff-panel p,
.fct-preview-panel p,
.fct-history-panel p,
.fct-privacy-dashboard p,
.fct-format-compare p,
.fct-collection-panel p,
.fct-quality-panel p,
.fct-learning-panel p {
  color: var(--color-text-muted);
  margin: 0;
}

.fct-preview-grid,
.fct-dashboard-grid,
.fct-format-grid,
.fct-collection-grid,
.fct-learning-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.fct-preview-card,
.fct-dashboard-card,
.fct-format-card,
.fct-collection-card,
.fct-learning-card,
.fct-history-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: var(--color-bg-3);
}

.fct-preview-card img,
.fct-preview-card canvas {
  display: block;
  width: 100%;
  max-height: 240px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-text) 6%, transparent);
}

.fct-preview-stats,
.fct-history-meta,
.fct-format-list {
  display: grid;
  gap: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.fct-preview-stats strong,
.fct-history-meta strong,
.fct-dashboard-card strong,
.fct-format-card strong {
  color: var(--color-text);
}

.fct-quality-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
}

.fct-quality-option {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-3);
  color: var(--color-text);
  padding: var(--space-3);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.fct-quality-option[aria-pressed="true"] {
  border-color: var(--color-brand);
  box-shadow: var(--shadow-focus);
}

.fct-history-list,
.fct-workflow-list {
  display: grid;
  gap: var(--space-2);
}

.fct-history-item {
  display: grid;
  gap: var(--space-2);
}

.fct-history-actions,
.fct-workflow-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.fct-empty-state {
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  background: var(--color-bg-3);
}

.fct-privacy-method {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  width: fit-content;
  border-radius: var(--radius-full);
  background: var(--color-brand-dim);
  color: var(--color-brand);
  padding: 6px 10px;
  font-weight: 800;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.fct-workflow-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  align-items: start;
}

.fct-workflow-step span {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--color-brand);
  color: #fff;
  font-family: var(--font-head);
  font-weight: 800;
}

.fct-success-panel {
  border-color: rgba(22, 163, 74, 0.34);
}

.fct-success-check {
  width: 42px;
  height: 42px;
  display: inline-grid;
  place-items: center;
  border-radius: var(--radius-full);
  background: rgba(22, 163, 74, 0.14);
  color: #16a34a;
  font-weight: 900;
  animation: fct-pop var(--duration-slow) var(--ease-standard);
}

.fct-success-panel h3,
.fct-failure-panel h3,
.fct-recommendations h3 {
  font-family: var(--font-head);
  margin: 0;
  color: var(--color-text);
}

.fct-success-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.fct-success-grid span,
.fct-failure-panel p,
.fct-recommendations p {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.fct-success-grid strong {
  display: block;
  color: var(--color-text);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.fct-action-row,
.fct-recommendation-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.fct-action-row .btn-primary,
.fct-action-row .btn-secondary,
.fct-recommendation-links .btn-secondary {
  flex: 1 1 160px;
}

.fct-failure-panel {
  border-color: rgba(220, 38, 38, 0.34);
}

.fct-failure-panel h3 {
  color: color-mix(in srgb, #dc2626 78%, var(--color-text));
}

.fct-ripple {
  position: relative;
  overflow: hidden;
}

.fct-ripple::after {
  content: "";
  position: absolute;
  inset: auto;
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.32);
  opacity: 0;
  transform: scale(1);
  pointer-events: none;
}

.fct-ripple.is-rippling::after {
  left: var(--ripple-x, 50%);
  top: var(--ripple-y, 50%);
  opacity: 1;
  animation: fct-ripple 240ms var(--ease-standard);
}

.error-msg {
  border: 1px solid rgba(220, 38, 38, 0.32) !important;
  background: rgba(220, 38, 38, 0.12) !important;
}

.error-msg p,
#error-text {
  color: color-mix(in srgb, #dc2626 74%, var(--color-text)) !important;
}

.retry-btn {
  background: transparent !important;
  border: 1px solid currentColor !important;
  color: color-mix(in srgb, #dc2626 74%, var(--color-text)) !important;
}

.faq-list details,
.faq-list .faq-item {
  border-color: var(--color-border) !important;
}

.related-grid {
  align-items: stretch;
}

.related-card {
  min-height: 68px;
  border-radius: var(--radius-md) !important;
}

.card,
.tool-card,
.related-card,
.home-tool-card {
  will-change: transform;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 768px) {
  .tool-hero {
    padding-block: var(--space-12) var(--space-6) !important;
  }

  .tool-card {
    padding: var(--space-5) !important;
  }

  .fct-upload,
  .upload-zone {
    min-height: 200px !important;
  }

  .fct-upload-meta {
    grid-template-columns: 1fr;
  }

  .fct-upload-intelligence,
  .fct-stage-list,
  .fct-success-grid,
  .fct-preview-grid,
  .fct-dashboard-grid,
  .fct-format-grid,
  .fct-collection-grid,
  .fct-learning-grid,
  .fct-quality-options {
    grid-template-columns: 1fr;
  }

  .convert-btn,
  .download-btn {
    padding-block: 16px !important;
  }
}

@keyframes fct-sheen {
  from {
    transform: translateX(-70%);
  }
  to {
    transform: translateX(70%);
  }
}

@keyframes fct-indeterminate {
  from {
    transform: translateX(-18%);
  }
  to {
    transform: translateX(150%);
  }
}

@keyframes fct-pop {
  from {
    opacity: 0;
    transform: scale(0.82);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes fct-ripple {
  from {
    opacity: 0.36;
    transform: translate(-50%, -50%) scale(1);
  }
  to {
    opacity: 0;
    transform: translate(-50%, -50%) scale(24);
  }
}

@media (prefers-reduced-motion: reduce) {
  .fct-upload::after,
  .upload-zone::after,
  .fct-progress-bar,
  .fct-success-check,
  .fct-ripple.is-rippling::after {
    animation: none !important;
  }
}

@media (max-width: 430px) {
  .container,
  .page,
  .fct-breadcrumb {
    padding-inline: 16px !important;
  }

  .tool-card {
    border-radius: var(--radius-lg) !important;
  }
}

@media (max-width: 390px) {
  .fct-upload,
  .upload-zone {
    padding-inline: 14px !important;
  }

  .upload-btn,
  .convert-btn,
  .download-btn {
    width: 100% !important;
  }
}

@media (max-width: 360px) {
  .container,
  .page,
  .fct-breadcrumb {
    padding-inline: 14px !important;
  }

  .tool-card {
    padding: 16px !important;
  }
}