/* ==========================================================================
   GSAP Widgets — main stylesheet
   Shared by index.html (Collection) and widget.html (single widget view).

   1. Tokens          5. Collection: filters + grid
   2. Base            6. Collection: cards, nav bar + footer
   3. Buttons         7. Widget page
   4. Collection hero 8. Utilities + responsive
   ========================================================================== */

/* 1. Tokens ---------------------------------------------------------------- */
:root {
  /* Colours: white + blue */
  --white: #ffffff;
  --blue: #1f5eff;
  --blue-600: #1747cc;
  --blue-100: #e3ecff;
  --blue-50: #f3f7ff;
  --ink: #0b1b3a;
  --muted: #5b6b8c;
  --line: #dce5f8;

  /* Type */
  --font: "Inter Tight", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Shape */
  --radius: 20px;
}

/* 2. Base ------------------------------------------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

img,
svg {
  display: block;
  max-width: 100%;
}

iframe {
  display: block;
}

button,
textarea {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--blue-100);
  padding: 0.1em 0.4em;
  border-radius: 6px;
}

/* 3. Buttons --------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.3rem;
  border: 1.5px solid var(--blue);
  border-radius: 999px;
  background: var(--blue);
  color: var(--white);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.btn:hover {
  background: var(--blue-600);
  border-color: var(--blue-600);
}

.btn--ghost {
  background: var(--white);
  color: var(--blue);
}

.btn--ghost:hover {
  background: var(--blue-50);
  color: var(--blue-600);
}

.btn--sm {
  padding: 0.35rem 0.8rem;
  font-size: 0.68rem;
}

/* 4. Collection hero ------------------------------------------------------- */
.container {
  width: min(100% - 3rem, 120rem);
  margin-inline: auto;
}

.hero {
  padding-top: clamp(1.5rem, 4vw, 3.5rem);
}

.hero__row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
}

.hero__title,
.hero__count {
  margin: 0;
  font-size: clamp(2.75rem, 13vw, 11rem);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.hero__count {
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}

.hero__intro {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem 2rem;
  padding-block: 1.5rem;
}

.hero__intro p {
  max-width: 44rem;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.25rem);
}

/* 5. Collection: filters + grid ------------------------------------------- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding-bottom: 1.25rem;
}

.pill {
  padding: 0.55rem 1.1rem;
  border: 1.5px solid transparent;
  border-radius: 999px;
  background: transparent;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.pill:hover {
  background: var(--blue-50);
  border-color: var(--line);
}

.pill[aria-pressed="true"] {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--white);
}

.grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr)); /* five next to each other */
  gap: 1rem;
  margin: 0;
  padding: 0 0 4rem;
  list-style: none;
}

/* 6. Collection: cards ----------------------------------------------------- */
.card {
  display: block;
  text-decoration: none;
}

.card__preview {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--blue-50);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.card:hover .card__preview,
.card:focus-visible .card__preview {
  border-color: var(--blue);
  box-shadow: 0 14px 30px rgba(31, 94, 255, 0.18);
  transform: translateY(-4px);
}

/* The widget runs in a big hidden-pointer iframe, scaled down to fit the card. */
.card__preview iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 300%;
  height: 300%;
  border: 0;
  background: var(--white);
  transform: scale(0.3333333);
  transform-origin: 0 0;
  pointer-events: none;
}

.tag {
  position: absolute;
  top: 0.9rem;
  left: 0.9rem;
  z-index: 1;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  background: var(--white);
  box-shadow: 0 0 0 1px var(--line);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.card__meta {
  display: flex;
  justify-content: space-between;
  padding-top: 0.75rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.card__meta span:first-child {
  color: var(--blue);
  font-weight: 500;
}

.card__title {
  margin: 0.15rem 0 0;
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}

/* Site header (nav bar) + footer — home page */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.88);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
}

.nav__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav__link {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  text-transform: uppercase;
  transition: background 0.2s, color 0.2s;
}

.nav__link:hover {
  background: var(--blue-50);
  color: var(--blue-600);
}

.nav__link[aria-current="page"] {
  background: var(--blue-100);
  color: var(--blue-600);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--blue-50);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-block: 1.5rem;
}

.footer__inner p {
  margin: 0;
}

.site-footer a {
  color: var(--blue-600);
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.site-footer a:hover {
  color: var(--blue);
}

/* 7. Widget page ----------------------------------------------------------- */
.widget-page {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  overflow: hidden;
}

.topbar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding: 0.7rem 1.25rem;
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.brand {
  font-weight: 600;
  letter-spacing: -0.02em;
  text-decoration: none;
  white-space: nowrap;
}

.brand span {
  color: var(--blue);
}

.topbar__title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.topbar__title h1 {
  margin: 0;
  overflow: hidden;
  font-size: 1.05rem;
  font-weight: 500;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.chip {
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  background: var(--blue-100);
  color: var(--blue-600);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.topbar__link {
  justify-self: end;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(320px, 2fr) 3fr;
  flex: 1;
  min-height: 0;
}

/* Code side */
.code {
  display: flex;
  flex-direction: column;
  min-height: 0;
  border-right: 1px solid var(--line);
  background: var(--blue-50);
}

.code__intro {
  margin: 0;
  padding: 0.8rem 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.notes {
  border-top: 1px solid var(--line);
  background: var(--white);
}

.notes summary {
  padding: 0.55rem 1rem;
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
}

.notes pre {
  max-height: 14rem;
  margin: 0;
  padding: 0 1rem 1rem;
  overflow: auto;
  font-family: var(--mono);
  font-size: 0.76rem;
  line-height: 1.6;
  white-space: pre-wrap;
}

.pane {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 0;
  border-top: 1px solid var(--line);
}

.pane__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.4rem 0.75rem 0.4rem 1rem;
  background: var(--blue-50);
}

.pane__label {
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.pane textarea {
  flex: 1;
  width: 100%;
  min-height: 0;
  padding: 0.9rem 1rem;
  border: 0;
  background: var(--white);
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.6;
  white-space: pre;
  tab-size: 2;
  resize: none;
  overflow: auto;
}

.pane textarea:focus-visible {
  outline-offset: -3px;
}

/* View side */
.view {
  position: relative;
  min-height: 0;
  background: var(--white);
}

.view iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.view__full {
  position: absolute;
  top: 1rem;
  right: 1rem;
}

.view__download {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  box-shadow: 0 8px 20px rgba(31, 94, 255, 0.3);
}

/* 8. Utilities + responsive ------------------------------------------------ */

/* Text for screen readers only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  border: 0;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* First tab stop: jumps past the nav straight to the content */
.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  border-radius: 999px;
  background: var(--blue);
  color: var(--white);
  font-family: var(--mono);
  font-size: 0.75rem;
  text-decoration: none;
  text-transform: uppercase;
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

.notice {
  margin: 1.5rem;
  padding: 1.25rem 1.5rem;
  border: 1.5px dashed var(--blue);
  border-radius: var(--radius);
  background: var(--blue-50);
}

.notice p {
  margin: 0.4rem 0 0;
  color: var(--muted);
}

.toast {
  position: fixed;
  bottom: 1.25rem;
  left: 50%;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--white);
  font-size: 0.85rem;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity 0.25s, transform 0.25s;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 1500px) {
  .grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (max-width: 1150px) {
  .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 800px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  /* Widget page: stack the preview on top of the code */
  .widget-page {
    height: auto;
    overflow: auto;
  }

  .workspace {
    display: flex;
    flex-direction: column;
  }

  .view {
    order: -1;
    height: 60vh;
  }

  .code {
    border-right: 0;
  }

  .pane {
    flex: none;
  }

  .pane textarea {
    min-height: 12rem;
  }

  .topbar {
    grid-template-columns: auto 1fr auto;
  }
}

@media (max-width: 520px) {
  .grid { grid-template-columns: 1fr; }

  /* Keep the nav bar to a single line on phones */
  .nav {
    gap: 0.5rem;
    min-height: 3.5rem;
  }

  .nav__links {
    flex-wrap: nowrap;
    gap: 0;
  }

  .nav__link {
    padding: 0.4rem 0.6rem;
    font-size: 0.68rem;
    white-space: nowrap;
  }
}

/* Very small phones: brand on one line, links underneath */
@media (max-width: 360px) {
  .nav {
    flex-wrap: wrap;
    padding-block: 0.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}