@import './design-system.css';

.premium-tool-hero {
  padding: var(--space-8) 0 var(--space-6);
  background:
    radial-gradient(circle at top left, var(--color-accent-glow), transparent 26%),
    linear-gradient(180deg, var(--color-bg-primary), var(--color-bg-secondary));
  border-bottom: 1px solid var(--color-divider);
}

.premium-tool-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

.premium-tool-breadcrumb a {
  color: var(--color-text-secondary);
}

.premium-tool-hero__grid {
  display: grid;
  gap: var(--space-5);
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  background: linear-gradient(180deg, var(--color-surface), var(--color-surface-elevated));
  box-shadow: var(--shadow-lg);
}

.premium-tool-kicker {
  display: inline-flex;
  margin-bottom: var(--space-3);
  color: var(--color-accent);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.premium-tool-hero h1 {
  max-width: 760px;
  margin: 0 0 var(--space-4);
  font-size: clamp(var(--font-size-3xl), 6vw, var(--font-size-5xl));
  line-height: 1.05;
  letter-spacing: var(--letter-spacing-tight);
}

.premium-tool-hero p {
  max-width: 760px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
}

.premium-privacy-badge {
  display: inline-flex;
  align-items: center;
  max-width: 760px;
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid hsl(145 70% 42% / 0.35);
  background: hsl(145 70% 42% / 0.12);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

.premium-tool-workspace {
  width: min(calc(100% - (var(--container-padding) * 2)), var(--container-xl));
  margin: var(--space-8) auto;
  padding: var(--space-6) !important;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  background: var(--color-surface-elevated);
  box-shadow: var(--shadow-lg);
}

.premium-tool-workspace input:not([type='checkbox']):not([type='radio']),
.premium-tool-workspace textarea,
.premium-tool-workspace select {
  min-height: 44px;
}

.premium-workspace-companion {
  margin-top: var(--space-8);
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
}

.premium-workspace-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: var(--space-4) 0;
}

.premium-state {
  margin-top: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.premium-state--success {
  border: 1px solid hsl(145 70% 42% / 0.4);
  background: hsl(145 70% 42% / 0.12);
}

.premium-state--error {
  border: 1px solid hsl(0 76% 56% / 0.45);
  background: hsl(0 76% 56% / 0.12);
}

.premium-dropzone {
  outline: 1px dashed var(--color-border-strong);
  outline-offset: var(--space-2);
  transition: outline-color var(--transition-fast), background-color var(--transition-fast);
}

.premium-dropzone.is-dragover {
  outline-color: var(--color-primary-500);
  background: var(--color-accent-subtle);
}

.premium-upload-progress {
  height: 6px;
  margin-top: var(--space-3);
  overflow: hidden;
  border-radius: var(--radius-full);
  background: var(--color-surface-active);
}

.premium-upload-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary-500), var(--color-accent-500));
  transition: width var(--transition-base);
}

.premium-tool-guides {
  padding: var(--space-10) 0 var(--space-16);
}

.premium-guide-block,
.premium-guide-card,
.premium-scenario-grid article,
.premium-related-grid a {
  margin-top: var(--space-6);
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, var(--color-surface), var(--color-surface-elevated));
  box-shadow: var(--shadow-sm);
}

.premium-stepper,
.premium-guide-grid,
.premium-scenario-grid,
.premium-related-grid {
  display: grid;
  gap: var(--grid-gap);
}

.premium-stepper {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  padding: 0;
  list-style: none;
  counter-reset: premium-step;
}

.premium-stepper li {
  counter-increment: premium-step;
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}

.premium-stepper li::before {
  content: counter(premium-step, decimal-leading-zero);
  display: block;
  margin-bottom: var(--space-2);
  color: var(--color-accent);
  font-weight: var(--font-weight-bold);
}

.premium-stepper strong,
.premium-stepper span {
  display: block;
}

.premium-stepper span,
.premium-guide-card li,
.premium-accordion p,
.premium-scenario-grid p,
.premium-related-grid span {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.premium-guide-grid,
.premium-scenario-grid,
.premium-related-grid {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
}

.premium-accordion {
  display: grid;
  gap: var(--space-3);
}

.premium-accordion details {
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}

.premium-accordion summary {
  cursor: pointer;
  color: var(--color-text-primary);
  font-weight: var(--font-weight-bold);
}

.premium-related-grid a {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  color: var(--color-accent);
  text-decoration: none;
}

@media (min-width: 960px) {
  .premium-tool-workspace {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
    gap: var(--space-6);
    align-items: start;
  }

  .premium-workspace-companion {
    margin-top: 0;
    position: sticky;
    top: calc(var(--space-8) + 72px);
  }
}

/* Task 7 engagement and accessibility enhancements */
html {
  font-size: 16px;
}

body {
  line-height: 1.6;
}

p,
li {
  max-width: 75ch;
}

.skip-link,
.nt-sticky-tool-header a:focus-visible,
.premium-focusable:focus-visible,
.nt-engagement-panel button:focus-visible,
.nt-related-card:focus-visible,
.nt-blog-suggestions a:focus-visible,
.nt-compare-tools a:focus-visible {
  outline: 3px solid var(--color-accent, #67e8f9);
  outline-offset: 3px;
}

.nt-sticky-tool-header {
  position: sticky;
  top: 0;
  z-index: 80;
  border-bottom: 1px solid var(--color-border, #334155);
  background: color-mix(in srgb, var(--color-bg-primary, #07080b) 92%, transparent);
  color: var(--color-text-primary, #f8fafc);
  backdrop-filter: blur(12px);
}

.nt-sticky-tool-header__inner {
  width: min(calc(100% - 32px), var(--container-xl, 1180px));
  min-height: 56px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-4, 1rem);
}

.nt-sticky-tool-header nav {
  display: flex;
  gap: .5rem;
  align-items: center;
  color: var(--color-text-secondary, #cbd5e1);
  font-size: .9rem;
}

.nt-sticky-tool-header strong {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nt-howto {
  grid-column: 1 / -1;
  margin-bottom: var(--space-5, 1.25rem);
}

.nt-howto details,
.nt-engagement-panel,
.nt-related-tools,
.nt-blog-suggestions,
.nt-compare-tools,
.nt-progress-steps,
.nt-recent-tools,
.nt-share-result,
.nt-rating,
.nt-feedback {
  border: 1px solid var(--color-border, #334155);
  border-radius: var(--radius-xl, 16px);
  background: var(--color-surface, #101827);
  color: var(--color-text-primary, #f8fafc);
}

.nt-howto summary {
  cursor: pointer;
  padding: var(--space-4, 1rem) var(--space-5, 1.25rem);
  font-weight: var(--font-weight-bold, 700);
}

.nt-howto ol {
  margin: 0;
  padding: 0 var(--space-5, 1.25rem) var(--space-5, 1.25rem) calc(var(--space-5, 1.25rem) + 1.5rem);
}

.nt-live-counter,
.nt-shortcut-hint,
.nt-rating-summary,
.nt-feedback p,
.nt-share-result p,
.nt-recent-tools p {
  color: var(--color-text-secondary, #cbd5e1);
  font-size: var(--font-size-sm, .875rem);
}

.nt-live-counter {
  margin: .375rem 0 .75rem;
}

.nt-shortcut-hint {
  display: inline-flex;
  margin-inline-start: .5rem;
  padding: .15rem .45rem;
  border: 1px solid var(--color-border, #334155);
  border-radius: var(--radius-md, 8px);
  background: var(--color-surface-elevated, #111827);
}

.nt-tool-loading {
  position: relative;
  min-height: 240px;
}

.nt-tool-loading::before {
  content: '';
  position: absolute;
  inset: var(--space-4, 1rem);
  z-index: 2;
  border-radius: var(--radius-xl, 16px);
  background: linear-gradient(90deg, transparent, rgba(148, 163, 184, .14), transparent), var(--color-surface, #101827);
  background-size: 200% 100%;
  animation: nt-skeleton 1.1s linear infinite;
}

@keyframes nt-skeleton {
  to { background-position: -200% 0; }
}

.nt-progress-steps,
.nt-recent-tools {
  margin-top: var(--space-5, 1.25rem);
  padding: var(--space-5, 1.25rem);
}

.nt-progress-steps ol {
  display: grid;
  gap: .5rem;
  margin: 0 0 var(--space-4, 1rem);
  padding: 0;
  list-style: none;
}

.nt-progress-steps li {
  display: flex;
  gap: .625rem;
  align-items: center;
}

.nt-progress-steps li span {
  width: 1.5rem;
  height: 1.5rem;
  display: inline-grid;
  place-items: center;
  border-radius: 999px;
  background: var(--color-accent-subtle, rgba(34, 211, 238, .14));
  color: var(--color-accent, #67e8f9);
  font-weight: 700;
}

.nt-progress-bar {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--color-surface-active, #1f2937);
}

.nt-progress-bar span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary-500, #6366f1), var(--color-accent, #67e8f9));
  transition: width .3s ease;
}

.nt-recent-tools ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.nt-recent-tools a,
.nt-blog-suggestions a,
.nt-compare-tools a,
.nt-compare-tools article,
.nt-related-card {
  color: inherit;
  text-decoration: none;
}

.nt-recent-tools a {
  display: grid;
  gap: .125rem;
  padding: .6rem 0;
  border-top: 1px solid var(--color-border, #334155);
}

.nt-recent-tools span,
.nt-related-card small,
.nt-blog-suggestions span,
.nt-compare-tools span {
  color: var(--color-text-secondary, #cbd5e1);
  font-size: .9rem;
}

.nt-section-heading span,
.nt-engagement-header span {
  color: var(--color-accent, #67e8f9);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.nt-related-carousel,
.nt-blog-suggestion-grid,
.nt-compare-grid,
.nt-engagement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  gap: var(--space-4, 1rem);
}

.nt-related-tools,
.nt-blog-suggestions,
.nt-compare-tools,
.nt-engagement-panel {
  margin-top: var(--space-6, 1.5rem);
  padding: var(--space-6, 1.5rem);
}

.nt-related-card,
.nt-blog-suggestions a,
.nt-compare-grid a,
.nt-compare-grid article,
.nt-rating,
.nt-feedback,
.nt-share-result {
  padding: var(--space-4, 1rem);
  border: 1px solid var(--color-border, #334155);
  border-radius: var(--radius-lg, 12px);
  background: var(--color-surface-elevated, #111827);
}

.nt-related-card {
  display: grid;
  gap: .5rem;
}

.nt-related-thumb {
  width: 56px;
  height: 40px;
  display: inline-grid;
  place-items: center;
  border-radius: var(--radius-md, 8px);
  background: var(--color-accent-subtle, rgba(34, 211, 238, .14));
  color: var(--color-accent, #67e8f9);
  font-weight: 800;
}

.nt-engagement-header {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4, 1rem);
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4, 1rem);
}

.nt-favorite-button,
.nt-feedback button,
.nt-share-result button,
.nt-star {
  min-height: 44px;
  border: 1px solid var(--color-border-strong, #475569);
  border-radius: var(--radius-md, 8px);
  background: var(--color-surface, #101827);
  color: var(--color-text-primary, #f8fafc);
  cursor: pointer;
}

.nt-favorite-button,
.nt-feedback button,
.nt-share-result button {
  padding: .65rem .9rem;
}

.nt-stars {
  display: flex;
  gap: .25rem;
}

.nt-star {
  width: 44px;
  font-size: 1.35rem;
  color: var(--color-text-secondary, #cbd5e1);
}

.nt-star.is-active,
.nt-star:hover {
  color: #facc15;
}

.nt-feedback-actions {
  display: flex;
  gap: .75rem;
}

.nt-feedback button[aria-pressed='true'],
.nt-favorite-button[aria-pressed='true'] {
  border-color: var(--color-accent, #67e8f9);
  background: var(--color-accent-subtle, rgba(34, 211, 238, .14));
}

.nt-js-note {
  margin: 0;
  padding: .75rem 1rem;
  color: var(--color-text-secondary, #cbd5e1);
}

@media (max-width: 720px) {
  .nt-sticky-tool-header__inner {
    align-items: flex-start;
    flex-direction: column;
    padding: .75rem 0;
  }
}