:root {
  color-scheme: light;
  --paper: #f4f3ef;
  --paper-deep: #e9e7e1;
  --ink: #141414;
  --muted: #6f6d67;
  --line: #d6d3cc;
  --accent: #ef4035;
  --white: #ffffff;
  --dark-stage: #202225;
  --shadow: 0 22px 55px rgb(20 20 20 / 13%);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--paper);
}

button,
input,
a { font: inherit; }

button,
a,
label { -webkit-tap-highlight-color: transparent; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  color: var(--white);
  background: var(--ink);
  border-radius: 4px;
  transform: translateY(-180%);
}

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

.site-header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  padding: 0 4vw;
  border-bottom: 1px solid rgb(20 20 20 / 12%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
  font-size: 1.02rem;
  font-weight: 800;
  text-decoration: none;
}

.brand img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.select-all {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 0;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
}

.select-all input {
  width: 19px;
  height: 19px;
  margin: 0;
  accent-color: var(--accent);
}

.toolbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(1.5rem, 4vw, 3.6rem) 4vw clamp(1.2rem, 2.5vw, 2rem);
}

.toolbar h1 {
  margin: 0 0 0.35rem;
  font-size: clamp(1.65rem, 3vw, 2.7rem);
  line-height: 1;
  letter-spacing: 0;
}

.toolbar p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.category-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
}

.filter-button {
  min-height: 38px;
  padding: 0 0.85rem;
  color: var(--muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 750;
  cursor: pointer;
}

.filter-button:hover { color: var(--ink); }

.filter-button[aria-pressed="true"] {
  color: var(--ink);
  background: var(--white);
  border-color: var(--line);
}

.filter-button:focus-visible,
.item-download:focus-visible,
.text-button:focus-visible,
.primary-button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.collection { padding: 0 4vw 11rem; }

.logo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: clamp(1rem, 2.2vw, 2.5rem);
  row-gap: clamp(2.5rem, 4.8vw, 4.5rem);
}

.logo-item {
  min-width: 0;
  opacity: 0;
  transform: translateY(14px);
  animation: item-in 500ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
  animation-delay: calc(var(--item-index) * 38ms);
}

.logo-stage {
  position: relative;
  display: grid;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--white);
  border-radius: 3px;
  transition: box-shadow 240ms ease, transform 240ms ease;
}

.logo-stage[data-preview="dark"] { background: var(--dark-stage); }

.logo-stage::after {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  border: 1px solid rgb(20 20 20 / 9%);
  border-radius: inherit;
}

.logo-stage > img {
  align-self: center;
  justify-self: center;
  width: 100%;
  height: 100%;
  padding: 12%;
  object-fit: contain;
  transition: transform 260ms cubic-bezier(0.22, 1, 0.36, 1);
}

.logo-item:hover .logo-stage,
.logo-item:focus-within .logo-stage {
  z-index: 1;
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.logo-item:hover .logo-stage > img,
.logo-item:focus-within .logo-stage > img { transform: translateY(-3%) scale(1.025); }

.logo-select {
  position: absolute;
  z-index: 3;
  top: 0.8rem;
  left: 0.8rem;
  cursor: pointer;
}

.logo-select input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}

.checkmark {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  color: var(--white);
  background: rgb(255 255 255 / 92%);
  border: 1px solid rgb(20 20 20 / 20%);
  border-radius: 50%;
  font-size: 0.82rem;
  font-weight: 900;
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.logo-item:hover .checkmark,
.logo-item:focus-within .checkmark,
.logo-select input:checked + .checkmark { opacity: 1; }

.logo-select input:checked + .checkmark {
  background: var(--accent);
  border-color: var(--accent);
}

.logo-select input:focus-visible + .checkmark {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.item-download {
  position: absolute;
  z-index: 2;
  right: 0.75rem;
  bottom: 0.75rem;
  left: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 46px;
  color: var(--white);
  background: var(--ink);
  border-radius: 2px;
  font-size: 0.8rem;
  font-weight: 800;
  text-decoration: none;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 180ms ease, transform 220ms cubic-bezier(0.22, 1, 0.36, 1), background 160ms ease;
}

.item-download:hover { background: var(--accent); }

.logo-item:hover .item-download,
.logo-item:focus-within .item-download {
  opacity: 1;
  transform: translateY(0);
}

.download-icon {
  font-size: 1.15rem;
  line-height: 1;
}

.logo-meta {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0.1rem 0;
}

.logo-category {
  margin: 0 0 0.28rem;
  color: var(--accent);
  font-size: 0.67rem;
  font-weight: 800;
  text-transform: uppercase;
}

.logo-meta h2 {
  display: -webkit-box;
  margin: 0;
  overflow: hidden;
  font-size: 0.94rem;
  font-weight: 750;
  line-height: 1.3;
  letter-spacing: 0;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.logo-size {
  flex: 0 0 auto;
  margin: 1.05rem 0 0;
  color: var(--muted);
  font-size: 0.67rem;
  white-space: nowrap;
}

.source-links {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin: 0.75rem 0.1rem 0;
  padding-top: 0.7rem;
  border-top: 1px solid var(--line);
  font-size: 0.74rem;
}

.source-links[hidden] { display: none; }

.source-note {
  flex: 0 1 auto;
  color: var(--muted);
}

.source-list {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.65rem;
}

.source-list a {
  color: var(--ink);
  font-weight: 750;
  text-underline-offset: 0.18em;
}

.source-list a:hover { color: var(--accent); }

.source-list a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.selection-bar {
  position: fixed;
  z-index: 20;
  right: 50%;
  bottom: max(1rem, env(safe-area-inset-bottom));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  width: min(92vw, 620px);
  padding: 0.65rem 0.7rem 0.65rem 1rem;
  color: var(--white);
  background: var(--ink);
  border: 1px solid rgb(255 255 255 / 14%);
  border-radius: 5px;
  box-shadow: 0 22px 70px rgb(0 0 0 / 28%);
  transform: translateX(50%);
  animation: bar-in 260ms cubic-bezier(0.22, 1, 0.36, 1);
}

.selection-summary,
.selection-actions {
  display: flex;
  align-items: center;
}

.selection-summary { gap: 0.8rem; }
.selection-actions { gap: 0.35rem; }

.selection-count {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  color: var(--ink);
  background: var(--white);
  border-radius: 50%;
  font-size: 0.88rem;
  font-weight: 850;
}

.selection-summary strong,
.selection-summary small { display: block; }

.selection-summary strong { font-size: 0.82rem; }
.selection-summary small { color: rgb(255 255 255 / 58%); font-size: 0.66rem; }

.text-button,
.primary-button {
  min-height: 42px;
  border: 0;
  border-radius: 3px;
  font-size: 0.78rem;
  font-weight: 800;
  cursor: pointer;
}

.text-button {
  padding: 0 0.8rem;
  color: rgb(255 255 255 / 72%);
  background: transparent;
}

.primary-button {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0 1rem;
  color: var(--white);
  background: var(--accent);
}

.download-notice {
  position: fixed;
  z-index: 30;
  top: 1rem;
  right: 1rem;
  max-width: min(88vw, 410px);
  padding: 0.85rem 1rem;
  color: var(--white);
  background: var(--ink);
  border-radius: 4px;
  box-shadow: var(--shadow);
  font-size: 0.78rem;
  font-weight: 700;
  animation: notice-in 200ms ease-out;
}

.empty-state,
.load-error {
  margin: 4rem 0;
  color: var(--muted);
  text-align: center;
}

.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;
}

[hidden] { display: none !important; }

@keyframes item-in {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes bar-in {
  from { opacity: 0; transform: translate(50%, 14px); }
}

@keyframes notice-in {
  from { opacity: 0; transform: translateY(-8px); }
}

@media (max-width: 820px) {
  .toolbar { align-items: start; flex-direction: column; gap: 1.25rem; }
  .category-filters { justify-content: flex-start; }
  .logo-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 540px) {
  .site-header { min-height: 66px; }
  .brand img { width: 36px; height: 36px; }
  .toolbar { padding-top: 1.5rem; }
  .logo-grid { grid-template-columns: 1fr; row-gap: 2.8rem; }
  .logo-stage { aspect-ratio: 16 / 11; }
  .selection-bar { gap: 0.75rem; }
  .selection-summary small { display: none; }
  .text-button { padding: 0 0.55rem; }
}

@media (hover: none) {
  .checkmark { opacity: 1; }
  .item-download { opacity: 1; transform: translateY(0); }
  .logo-stage > img { padding-bottom: 24%; }
}

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