/* ==========================================================================
   Stacked – styles
   Tokens → base → components → sections → modal → responsive
   ========================================================================== */

@font-face {
  font-family: "Geist";
  src: url("assets/fonts/Geist-Variable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  --bg: #000000;
  --surface: #0d0d0d;          /* inputs, card hover */
  --border: #232323;
  --border-strong: #404040;    /* hover / focus border */
  --fg: #ffffff;
  --muted: #737373;
  --light-hover: #cccccc;      /* primary button hover */

  --radius-sm: 8px;            /* buttons, inputs, card image */
  --radius-md: 12px;           /* modal */
  --radius-lg: 16px;           /* card */

  --space: 20px;               /* page padding / grid gap */
  --nav-h: 80px;

  --font: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

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

html.modal-open {
  overflow: hidden;
  padding-right: var(--scrollbar, 0px);   /* no layout shift when the scrollbar disappears */
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg);
  font: 400 14px/16px var(--font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, p, hr { margin: 0; padding: 0; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
[hidden] { display: none !important; }

:focus-visible { outline: 2px solid var(--fg); outline-offset: 2px; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.icon {
  display: block;
  flex: none;
  width: 16px;
  height: 16px;
  color: inherit;
}

/* ---------- Buttons ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 11px;             /* 12px minus the 1px border */
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font: 400 14px/16px var(--font);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color .15s ease, border-color .15s ease;
}

.btn--primary {
  background: #fff;
  color: #000;
}

.btn--secondary {
  background: #000;
  color: #fff;
  border-color: var(--border);
}

.btn--icon { width: 40px; padding: 0; }
.btn--sm { width: 32px; height: 32px; }
.btn--block { width: 100%; }

.btn:disabled { cursor: default; }

@media (hover: hover) {
  .btn--primary:not(:disabled):hover { background: var(--light-hover); }
  .btn--secondary:hover { border-color: var(--border-strong); }
}

/* ---------- Top nav ---------- */
.topnav {
  position: sticky;
  top: 0;
  z-index: 100;               /* stays sharp above the modal overlay */
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: var(--nav-h);
  padding: var(--space);
  background: var(--bg);
  box-shadow: inset 0 -1px 0 var(--border);
}

.topnav__left,
.topnav__right {
  display: flex;
  align-items: center;
  min-width: 0;
}

.topnav__left { gap: 16px; flex: none; }
.topnav__right { gap: 8px; }

.logo { display: block; height: 40px; }
.logo img { height: 40px; width: auto; }

.topnav__divider {
  flex: none;
  width: 1px;
  height: 26px;
  background: var(--border);
}

.topnav__count {
  color: var(--muted);
  font: 400 16px/24px var(--font);
  white-space: nowrap;
}

/* ---------- Search field ---------- */
.search {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 1 400px;
  width: 400px;
  min-width: 0;
  height: 40px;
  padding: 0 11px;
  background: #000;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted);
  transition: border-color .15s ease;
}

.search:focus-within,
.search.has-value { border-color: var(--border-strong); }

@media (hover: hover) {
  .search:hover { border-color: var(--border-strong); }
}

.search input {
  flex: 1;
  min-width: 0;
  height: 100%;
  padding: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: #fff;
  font: 400 14px/16px var(--font);
  -webkit-appearance: none;
  appearance: none;
}

.search input::placeholder { color: var(--muted); opacity: 1; }
.search input::-webkit-search-cancel-button,
.search input::-webkit-search-decoration { -webkit-appearance: none; display: none; }

.search__clear {
  display: grid;
  place-items: center;
  flex: none;
  width: 16px;
  height: 16px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--muted);
}

/* ---------- Categories ---------- */
.categories {
  padding: var(--space);
  background: var(--bg);
  box-shadow: inset 0 -1px 0 var(--border);
}

.categories__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 32px;
  padding: 0 11px;
  background: #000;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font: 400 12px/16px var(--font);
  white-space: nowrap;
  transition: background-color .15s ease, border-color .15s ease;
}

@media (hover: hover) {
  .chip:hover { border-color: var(--border-strong); }
}

.chip.is-selected {
  background: var(--border);
  border-color: var(--border);
  color: #fff;
}

@media (hover: hover) {
  .chip.is-selected:hover { border-color: var(--border-strong); }
}

/* ---------- Body / grid ---------- */
.body {
  flex: 1;
  padding: var(--space);
  background: var(--bg);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: var(--space);
  align-items: start;          /* cards keep their own height */
}

.empty {
  padding: 80px 0;
  text-align: center;
  color: var(--muted);
  font: 400 14px/16px var(--font);
}

/* ---------- Card ---------- */
.card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 16px;
  background: #000;
  border-radius: var(--radius-lg);
  box-shadow: inset 0 0 0 1px var(--border);
  color: inherit;
  text-decoration: none;
  transition: background-color .15s ease;
}

.card[hidden] { display: none; }

.card__image {
  width: 100%;
  height: auto;                /* beats the height attribute, keeps 16:10 */
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.card__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card__title {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 500 14px/1.3 var(--font);
  color: #fff;
}

.card__link { display: none; }

.card__desc {
  color: var(--muted);
  font: 400 14px/1.3 var(--font);
}

@media (hover: hover) {
  .card:hover { background: var(--surface); }
  .card:hover .card__link { display: block; }
}

.card:focus-visible { background: var(--surface); }
.card:focus-visible .card__link { display: block; }

/* ---------- Footer ---------- */
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  min-height: 58px;
  padding: var(--space);
  background: var(--bg);
  box-shadow: inset 0 1px 0 var(--border);
  color: var(--muted);
  font: 500 14px/16px var(--font);
}

.footer a { color: #fff; text-decoration: underline; }

/* ---------- Modal: Add a new tool ---------- */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 50;                 /* below .topnav (100) so the nav stays sharp */
  display: flex;
  padding: var(--space);
  background: rgba(0, 0, 0, .8);
  overflow-y: auto;
}

.modal {
  width: 400px;
  max-width: 100%;
  margin: auto;                /* safe centering, scrolls when viewport is short */
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: var(--space);
  background: #000;
  border-radius: var(--radius-md);
  box-shadow: inset 0 0 0 1px var(--border);
  outline: none;
}

.modal__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.modal__title { font: 500 16px/1.3 var(--font); color: #fff; }

.divider {
  height: 1px;
  border: 0;
  background: var(--border);
}

.modal__form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal__intro {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.modal__heading { font: 500 14px/1.3 var(--font); color: #fff; }
.modal__text    { font: 500 12px/1.3 var(--font); color: var(--muted); }

.group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.group__title {
  font: 500 12px/1.3 var(--font);
  color: #fff;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field label { font: 500 12px/1.3 var(--font); color: var(--muted); }

/* Text field / input */
.input {
  width: 100%;
  height: 40px;
  padding: 0 11px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: 0;
  color: #fff;
  font: 400 12px/16px var(--font);
  transition: border-color .15s ease;
}

.input::placeholder { color: var(--muted); opacity: 1; }
.input:focus { border-color: var(--border-strong); }
.input[aria-invalid="true"] { border-color: #8a3a3a; }

/* ---------- Responsive (not in the spec – sensible defaults) ---------- */
@media (max-width: 1100px) {
  .search { flex: 1 1 240px; width: auto; }
  .topnav__right { flex: 1; justify-content: flex-end; }
}

@media (max-width: 900px) {
  .topnav__divider,
  .topnav__count { display: none; }
}

@media (max-width: 760px) {
  /* icon-only buttons */
  .btn__label {
    position: absolute;
    width: 1px; height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
  .topnav .btn { width: 40px; padding: 0; }
}

@media (max-width: 640px) {
  :root { --space: 16px; }

  .topnav {
    height: auto;
    flex-wrap: wrap;
    gap: 12px 8px;
    padding: 12px var(--space);
  }
  .topnav__left { margin-right: auto; }
  .topnav__right { display: contents; }
  .search { order: 5; flex: 1 1 100%; }

  .categories__list {
    flex-wrap: nowrap;
    overflow-x: auto;
    margin: 0 calc(var(--space) * -1);
    padding: 0 var(--space);
    scrollbar-width: none;
  }
  .categories__list::-webkit-scrollbar { display: none; }
  .chip { flex: none; }

  .footer { flex-direction: column; align-items: flex-start; }
}