/*
 * VR Blog — dark card grid (ecooz VR/Metaverse). Set THEME_DIR=vr-blog.
 * Best viewed with site dark mode (html.dark); palette is tuned for it.
 * Do not define --color-primary / --color-accent / --color-secondary here (Tailwind @theme in globals.css).
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --border: 265 18% 88%;
  --background: 265 15% 97%;
  --foreground: 265 35% 12%;
  --card: 0 0% 100%;
  --card-foreground: 265 35% 12%;
  --muted: 265 12% 94%;
  --muted-foreground: 265 10% 42%;
  --accent: 265 15% 92%;
  --accent-foreground: 265 35% 12%;
  --primary: 255 65% 48%;
  --primary-foreground: 0 0% 100%;
  --ring: 240 55% 55%;

  --color-background: #f6f7fb;
  --color-surface: #ffffff;
  --color-text: #12141f;
  --color-text-muted: #5c6178;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;

  --pf-tools-field-border: #c8cdd8;
  --pf-tools-field-bg: #ffffff;
  --pf-tools-field-fg: #12141f;
  --pf-tools-focus-outline: #3b82f6;
  --pf-tools-btn-primary-bg: #2563eb;
  --pf-tools-btn-primary-fg: #ffffff;
  --pf-tools-btn-primary-hover-bg: #1d4ed8;
  --pf-tools-btn-secondary-bg: #ffffff;
  --pf-tools-btn-secondary-fg: #12141f;
  --pf-tools-btn-secondary-border: #c8cdd8;
  --pf-tools-btn-secondary-hover-bg: #eef0f6;
  --pf-tools-dl-bg: #ffffff;
  --pf-tools-dt-fg: #5c6178;
  --pf-tools-dd-fg: #12141f;
  --pf-tools-nav-fg: #3d4256;
  --pf-tools-nav-hover-bg: #eef0f6;
  --pf-tools-nav-active-bg: #2563eb;
  --pf-tools-nav-active-fg: #ffffff;
  --pf-tools-border: hsl(var(--border));
  --pf-tools-surface: var(--color-surface);
  --pf-tools-panel-bg: var(--color-background);

  /* Blog card grid: equal tiles, responsive excerpt clamp */
  --pf-blog-card-body-min: 9.5rem;
  --pf-blog-card-title-lines: 2;
  --pf-blog-card-excerpt-lines: 2;
  --pf-blog-card-excerpt-size: 0.8125rem;
}

html.dark {
  --border: 265 22% 22%;
  --background: 265 45% 7%;
  --foreground: 265 8% 96%;
  --card: 265 32% 12%;
  --card-foreground: 265 8% 96%;
  --muted: 265 28% 16%;
  --muted-foreground: 265 10% 62%;
  --accent: 265 28% 18%;
  --accent-foreground: 265 8% 96%;
  --primary: 240 75% 72%;
  --primary-foreground: 265 45% 8%;
  --ring: 240 60% 55%;

  --color-background: #0b0d14;
  --color-surface: #141824;
  --color-text: #f2f4fa;
  --color-text-muted: #8b92a8;
  --pf-tools-nav-fg: #c5cad8;
  --pf-tools-nav-hover-bg: #1e2436;
  --pf-tools-nav-active-bg: #7dd3fc;
  --pf-tools-nav-active-fg: #0b0d14;
  --pf-tools-field-border: #2e3548;
  --pf-tools-field-bg: #141824;
  --pf-tools-field-fg: #f2f4fa;
  --pf-tools-focus-outline: #7dd3fc;
  --pf-tools-btn-primary-bg: #7dd3fc;
  --pf-tools-btn-primary-fg: #0b0d14;
  --pf-tools-btn-primary-hover-bg: #bae6fd;
  --pf-tools-btn-secondary-bg: #141824;
  --pf-tools-btn-secondary-fg: #f2f4fa;
  --pf-tools-btn-secondary-border: #2e3548;
  --pf-tools-btn-secondary-hover-bg: #1e2436;
  --pf-tools-dl-bg: #141824;
  --pf-tools-dt-fg: #8b92a8;
  --pf-tools-dd-fg: #e8ebf5;
}

/* Blog: equal-height card grid */
main ul.grid {
  gap: 1.25rem !important;
  align-items: stretch;
}

main ul.grid > li {
  display: flex;
  min-width: 0;
}

main ul.grid > li > article {
  display: flex;
  flex: 1 1 auto;
  width: 100%;
  min-height: 100%;
  border-radius: 12px;
  border-color: hsl(var(--border));
  box-shadow: none;
  background: hsl(var(--card));
  transition: border-color 0.15s ease, transform 0.15s ease;
}

html.dark main ul.grid > li > article:hover {
  border-color: hsl(var(--primary) / 0.45);
  box-shadow: 0 8px 32px hsl(265 50% 4% / 0.45);
  transform: translateY(-2px);
}

main ul.grid > li > article > .flex-1 {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-height: var(--pf-blog-card-body-min);
}

main ul.grid article h2 {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
  -webkit-line-clamp: var(--pf-blog-card-title-lines);
}

main ul.grid article > .flex-1 > span:first-child {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

main ul.grid article > .flex-1 > p {
  flex: 1 1 auto;
  margin-bottom: 0.75rem;
  font-size: var(--pf-blog-card-excerpt-size);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
  -webkit-line-clamp: var(--pf-blog-card-excerpt-lines);
  min-height: calc(var(--pf-blog-card-excerpt-lines) * 1.5 * var(--pf-blog-card-excerpt-size));
}

main ul.grid article > .flex-1 > footer {
  flex-shrink: 0;
  margin-top: auto;
}

@media (min-width: 640px) {
  :root {
    --pf-blog-card-body-min: 11rem;
    --pf-blog-card-excerpt-size: 0.875rem;
  }
}

@media (min-width: 1024px) {
  :root {
    --pf-blog-card-body-min: 12rem;
    --pf-blog-card-excerpt-lines: 3;
  }
}

main h1.text-3xl {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.03em;
}

/* Article: serif for long-read */
article.prose,
.prose {
  font-family: Georgia, 'Iowan Old Style', 'Times New Roman', serif;
  font-size: 1.0625rem;
  line-height: 1.7;
}

article.prose h1,
.prose h1 {
  font-family: 'Inter', system-ui, sans-serif;
  letter-spacing: -0.03em;
}

nav.flex.flex-wrap.gap-2 a.rounded-full {
  border-radius: 8px;
}

nav.flex.flex-wrap.gap-2 a.bg-primary {
  background: transparent !important;
  color: hsl(var(--foreground)) !important;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.prose a[target='_blank']::after {
  opacity: 0.6;
}

/* -------------------------------------------------------------------------- */
/* Pre-Form tools hub (extensions) — layout & form primitives                 */
/* -------------------------------------------------------------------------- */

.pf-tools {
  width: 100%;
  min-width: 0;
  max-width: 100%;
}

.pf-tools-intro {
  margin-bottom: 1.5rem;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.pf-tools-intro h1 {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 0.5rem;
}

.pf-tools-intro p {
  margin: 0;
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 42rem;
}

.pf-tools-intro-full p {
  max-width: none;
}

.pf-tools-layout {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

@media (min-width: 640px) {
  .pf-tools-layout {
    grid-template-columns: minmax(11rem, 14rem) minmax(0, 1fr);
  }
}

.pf-tools-nav {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 0.5rem;
}

@media (min-width: 640px) {
  .pf-tools-nav {
    flex-direction: column;
    flex-wrap: nowrap;
    position: sticky;
    top: 1rem;
  }
}

.pf-tools-nav-btn {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-radius: 0.375rem;
  border: 1px solid transparent;
  background: transparent;
  color: var(--pf-tools-nav-fg);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.25;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.pf-tools-nav-btn:hover {
  background: var(--pf-tools-nav-hover-bg);
}

.pf-tools-nav-btn:focus-visible {
  outline: 2px solid var(--pf-tools-focus-outline);
  outline-offset: 2px;
}

.pf-tools-nav-btn-active {
  background: var(--pf-tools-nav-active-bg);
  color: var(--pf-tools-nav-active-fg);
}

.pf-tools-nav-btn-active:hover {
  background: var(--pf-tools-btn-primary-hover-bg);
  color: var(--pf-tools-nav-active-fg);
}

.pf-tools-main {
  min-width: 0;
}

.pf-tools-panel {
  border: 1px solid var(--pf-tools-border);
  border-radius: 0.5rem;
  background: var(--pf-tools-panel-bg);
  padding: 1.25rem 1.25rem 1.5rem;
}

.pf-tools-panel h2 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 0.35rem;
}

.pf-tools-panel-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0 0 1.25rem;
  max-width: 40rem;
}

.pf-tools-segment {
  display: inline-flex;
  border-radius: 0.375rem;
  border: 1px solid var(--pf-tools-border);
  overflow: hidden;
  margin-bottom: 1rem;
}

.pf-tools-segment button {
  padding: 0.375rem 0.875rem;
  font-size: 0.8125rem;
  font-weight: 500;
  border: none;
  background: var(--pf-tools-surface);
  color: var(--color-text);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.pf-tools-segment button + button {
  border-left: 1px solid var(--pf-tools-border);
}

.pf-tools-segment button:hover {
  background: var(--pf-tools-nav-hover-bg);
}

.pf-tools-segment button.pf-tools-segment-active {
  background: var(--pf-tools-nav-active-bg);
  color: var(--pf-tools-nav-active-fg);
}

.pf-tools-segment button:focus-visible {
  outline: 2px solid var(--pf-tools-focus-outline);
  outline-offset: -2px;
  z-index: 1;
}

.pf-tools-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.pf-tools-stack-tight {
  gap: 0.75rem;
}

.pf-tools-field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
}

.pf-tools-field {
  min-width: 0;
  width: 100%;
}

.pf-tools-field-row > .pf-tools-field {
  flex: 1 1 10rem;
}

.pf-tools-field-narrow {
  flex: 0 1 8rem;
}

.pf-tools-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.pf-tools-input,
.pf-tools-select {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid var(--pf-tools-field-border);
  border-radius: 0.375rem;
  padding: 0.5rem 0.75rem;
  font-size: 1rem;
  background: var(--pf-tools-field-bg);
  color: var(--pf-tools-field-fg);
}

.pf-tools-input:focus,
.pf-tools-select:focus {
  outline: 2px solid var(--pf-tools-focus-outline);
  outline-offset: 1px;
  border-color: var(--pf-tools-focus-outline);
}

.pf-tools-btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.pf-tools-btn-primary {
  border-radius: 0.375rem;
  background: var(--pf-tools-btn-primary-bg);
  color: var(--pf-tools-btn-primary-fg);
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
}

.pf-tools-btn-primary:hover {
  background: var(--pf-tools-btn-primary-hover-bg);
}

.pf-tools-btn-primary:focus-visible {
  outline: 2px solid var(--pf-tools-focus-outline);
  outline-offset: 2px;
}

.pf-tools-btn-secondary {
  border-radius: 0.375rem;
  border: 1px solid var(--pf-tools-btn-secondary-border);
  background: var(--pf-tools-btn-secondary-bg);
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--pf-tools-btn-secondary-fg);
  cursor: pointer;
}

.pf-tools-btn-secondary:hover {
  background: var(--pf-tools-btn-secondary-hover-bg);
}

.pf-tools-btn-secondary:focus-visible {
  outline: 2px solid var(--pf-tools-focus-outline);
  outline-offset: 2px;
}

.pf-tools-error {
  font-size: 0.875rem;
  color: #b91c1c;
  margin: 0;
}

.pf-tools-note {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin: 0.5rem 0 0;
  max-width: 40rem;
}

.pf-tools-dl {
  border: 1px solid var(--pf-tools-border);
  border-radius: 0.5rem;
  overflow: hidden;
  background: var(--pf-tools-dl-bg);
}

.pf-tools-dl-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.25rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--pf-tools-border);
}

@media (min-width: 640px) {
  .pf-tools-dl-row {
    grid-template-columns: minmax(9rem, 1fr) minmax(0, 2fr);
    gap: 1rem;
    align-items: baseline;
  }
}

.pf-tools-dl-row:last-child {
  border-bottom: none;
}

.pf-tools-dt {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--pf-tools-dt-fg);
}

.pf-tools-dd {
  font-size: 0.875rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--pf-tools-dd-fg);
  word-break: break-all;
}