:root {
  color-scheme: light;
  --ink: #203332;
  --muted: #566b69;
  --paper: #eef3f0;
  --surface: #f8fbf9;
  --thumb: #e6eeeb;
  --checker: rgba(32, 51, 50, 0.025);
  --line: rgba(62, 103, 95, 0.16);
  --blue: #386f9b;
  --green: #256d60;
  --coral: #a45f46;
  --gold: #bc9153;
  --accent-fill: #285f54;
  --accent-text: #ffffff;
  --glass: rgba(255, 255, 255, 0.56);
  --glass-strong: rgba(249, 253, 251, 0.92);
  --glass-edge: rgba(255, 255, 255, 0.9);
  --glass-highlight: rgba(255, 255, 255, 0.5);
  --header-bg: rgba(247, 252, 249, 0.82);
  --glow-one: rgba(123, 192, 170, 0.28);
  --glow-two: rgba(148, 181, 216, 0.25);
  --glow-three: rgba(229, 192, 155, 0.23);
  --shadow: 0 24px 60px -20px rgba(43, 77, 68, 0.24);
  --card-shadow: 0 10px 32px -16px rgba(43, 77, 68, 0.18);
  --focus: rgba(37, 109, 96, 0.16);
}

body[data-theme="dark"] {
  color-scheme: dark;
  --ink: #edf5f1;
  --muted: #afc1bc;
  --paper: #101b1c;
  --surface: #1a2a2b;
  --thumb: #263838;
  --checker: rgba(237, 245, 241, 0.035);
  --line: rgba(187, 222, 209, 0.16);
  --blue: #a3c7eb;
  --green: #99d9c5;
  --coral: #e7b398;
  --gold: #dfc493;
  --accent-fill: #b2dfcf;
  --accent-text: #142f29;
  --glass: rgba(28, 46, 47, 0.6);
  --glass-strong: rgba(29, 47, 48, 0.95);
  --glass-edge: rgba(209, 240, 228, 0.18);
  --glass-highlight: rgba(209, 240, 228, 0.07);
  --header-bg: rgba(20, 35, 36, 0.85);
  --glow-one: rgba(57, 131, 111, 0.23);
  --glow-two: rgba(67, 108, 151, 0.2);
  --glow-three: rgba(151, 113, 75, 0.12);
  --shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.5);
  --card-shadow: 0 12px 32px -16px rgba(0, 0, 0, 0.4);
  --focus: rgba(153, 217, 197, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  min-width: 280px;
  min-height: 100vh;
  margin: 0;
  padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px));
  background: var(--paper);
  color: var(--ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  transition: background-color 160ms ease, color 160ms ease;
}

/* Fixed ambient color sits behind the translucent surfaces on every page. */
body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse at 4% 8%, var(--glow-one), transparent 54%),
    radial-gradient(ellipse at 96% 20%, var(--glow-two), transparent 52%),
    radial-gradient(ellipse at 46% 100%, var(--glow-three), transparent 60%);
  content: "";
  pointer-events: none;
}

::selection {
  background: var(--accent-fill);
  color: var(--accent-text);
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 4px;
}

.site-header {
  position: sticky;
  top: 16px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  width: calc(100% - 48px);
  max-width: 1488px;
  margin: 16px auto 0;
  padding: 14px 20px;
  border: 1px solid var(--glass-edge);
  border-radius: 22px;
  background: var(--header-bg);
  box-shadow: 0 8px 32px -18px rgba(17, 40, 35, 0.22), inset 0 1px 0 var(--glass-highlight);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
  backdrop-filter: blur(24px) saturate(140%);
}

.site-footer {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 10;
  display: grid;
  min-height: 64px;
  place-items: center;
  padding: 16px 18px calc(16px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--line);
  background: var(--header-bg);
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.5;
  text-align: center;
  -webkit-backdrop-filter: blur(24px) saturate(140%);
  backdrop-filter: blur(24px) saturate(140%);
}

.site-footer p {
  margin: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 1 auto;
  min-width: 0;
}

.header-actions nav {
  flex: 1 1 auto;
  min-width: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  font-weight: 700;
  letter-spacing: -0.035em;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--glass-edge);
  border-radius: 14px;
  background: var(--accent-fill);
  box-shadow: inset 0 1px 0 var(--glass-highlight), 0 4px 12px -7px var(--green);
  color: var(--accent-text);
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  letter-spacing: -0.04em;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.brand-mark:hover,
.brand-mark[aria-expanded="true"] {
  transform: translateY(-2px);
  box-shadow: var(--card-shadow);
}

.brand-menu-wrap {
  position: relative;
  display: inline-flex;
}

.brand-menu {
  position: absolute;
  top: calc(100% + 14px);
  left: 0;
  display: grid;
  min-width: 180px;
  padding: 8px;
  border: 1px solid var(--glass-edge);
  border-radius: 18px;
  background: var(--glass-strong);
  box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
}

.brand-menu[hidden] {
  display: none;
}

.brand-menu a {
  padding: 10px 12px;
  border-radius: 11px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0;
}

.brand-menu a:hover,
.brand-menu a:focus {
  background: var(--accent-fill);
  color: var(--accent-text);
}

nav {
  display: flex;
  gap: 5px;
  overflow-x: auto;
  padding: 4px 2px;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

nav a {
  flex: 0 0 auto;
  padding: 9px 13px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease;
}

nav a:hover {
  border-color: var(--line);
  background: var(--glass);
  color: var(--ink);
}

nav a.is-active {
  border-color: var(--glass-edge);
  background: var(--accent-fill);
  box-shadow: 0 4px 12px -8px var(--green);
  color: var(--accent-text);
}

.theme-toggle {
  display: inline-grid;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--glass);
  color: var(--ink);
  cursor: pointer;
  transition: background-color 180ms ease, color 180ms ease;
}

.theme-toggle:hover {
  border-color: transparent;
  background: var(--accent-fill);
  color: var(--accent-text);
}

.theme-toggle svg {
  width: 19px;
  height: 19px;
}

main {
  max-width: 1536px;
  margin: 0 auto;
  padding: 36px clamp(24px, 4vw, 56px) 80px;
}

.hero {
  position: relative;
  isolation: isolate;
  display: grid;
  gap: 22px;
  overflow: hidden;
  padding: clamp(28px, 4.5vw, 64px);
  border: 1px solid var(--glass-edge);
  border-radius: 30px;
  background: linear-gradient(120deg, var(--glass-highlight), transparent 75%), var(--glass);
  box-shadow: var(--shadow), inset 0 1px 0 var(--glass-highlight);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}

/* Quiet glass rings add depth without obscuring the archive heading. */
.hero::before,
.hero::after {
  position: absolute;
  z-index: -1;
  width: clamp(240px, 32vw, 460px);
  aspect-ratio: 1;
  border: 1px solid var(--glass-edge);
  border-radius: 50%;
  background: linear-gradient(145deg, var(--glass-highlight), transparent 65%);
  box-shadow: inset 0 1px 0 var(--glass-highlight), 0 24px 70px -40px var(--glow-one);
  content: "";
  pointer-events: none;
}

.hero::before {
  top: -38%;
  right: -4%;
}

.hero::after {
  right: -12%;
  bottom: -60%;
}

.hero > p:last-child {
  max-width: 620px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: var(--green);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 5px var(--focus);
  content: "";
}

h1 {
  max-width: 940px;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.8rem, 6.6vw, 6.25rem);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 1.02;
  text-wrap: balance;
  overflow-wrap: anywhere;
}

h2 {
  margin: 0 0 20px;
  font-size: clamp(1.35rem, 2.6vw, 1.8rem);
  font-weight: 600;
  letter-spacing: -0.04em;
}

p {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.7;
}

.toolbar {
  display: flex;
  margin: 32px 0;
}

label {
  display: grid;
  width: min(480px, 100%);
  gap: 10px;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

input {
  width: 100%;
  min-height: 52px;
  border: 1px solid var(--glass-edge);
  border-radius: 16px;
  background: var(--glass);
  box-shadow: var(--card-shadow), inset 0 1px 0 var(--glass-highlight);
  color: var(--ink);
  font: inherit;
  padding: 14px 18px 14px 46px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23748882' stroke-width='1.7' stroke-linecap='round'%3E%3Ccircle cx='10.5' cy='10.5' r='6.5'/%3E%3Cpath d='m16 16 4.5 4.5'/%3E%3C/svg%3E");
  background-position: 17px center;
  background-repeat: no-repeat;
  background-size: 19px;
  font-size: 0.88rem;
  font-weight: 400;
  letter-spacing: 0;
  outline: none;
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

input::placeholder {
  color: var(--muted);
  opacity: 1;
}

input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 4px var(--focus);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
  gap: 24px;
}

.category-card,
.asset-card,
.pdf-card {
  overflow: hidden;
  min-width: 0;
  border: 1px solid var(--glass-edge);
  border-radius: 24px;
  background: var(--glass);
  box-shadow: var(--card-shadow), inset 0 1px 0 var(--glass-highlight);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.category-card {
  display: grid;
  grid-template-rows: 210px 1fr;
  min-height: 320px;
  padding: 8px;
}

.category-card:hover,
.asset-card:hover,
.pdf-card:hover {
  border-color: var(--line);
  transform: translateY(-4px);
  box-shadow: var(--shadow), inset 0 1px 0 var(--glass-highlight);
}

.category-card img {
  display: block;
  width: 100%;
  height: 210px;
  object-fit: contain;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: linear-gradient(135deg, var(--glass-highlight), transparent), var(--thumb);
}

.category-card div,
.asset-card figcaption,
.pdf-card {
  padding: 22px;
}

.category-card div {
  position: relative;
  padding: 20px 52px 16px 14px;
}

.category-card div::after {
  position: absolute;
  top: 22px;
  right: 12px;
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--green);
  font-size: 1rem;
  content: "\2197";
  transition: background-color 180ms ease, color 180ms ease;
}

.category-card:hover div::after {
  background: var(--accent-fill);
  color: var(--accent-text);
}

.category-card h2,
.asset-card h3,
.pdf-card h3 {
  margin: 0 0 6px;
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  overflow-wrap: anywhere;
}

.asset-section {
  margin-top: 40px;
}

.asset-section > h2 {
  display: flex;
  align-items: center;
  gap: 18px;
}

.asset-section > h2::after {
  height: 1px;
  flex: 1;
  background: var(--line);
  content: "";
}

.asset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr));
  gap: 24px;
}

.asset-card {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 8px;
}

.asset-card a {
  display: grid;
  min-height: 220px;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 17px;
  background:
    linear-gradient(45deg, var(--checker) 25%, transparent 25%),
    linear-gradient(-45deg, var(--checker) 25%, transparent 25%),
    var(--thumb);
  background-size: 18px 18px;
}

.asset-card img {
  display: block;
  max-width: 100%;
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: contain;
}

.asset-card figcaption {
  margin-top: auto;
  padding: 20px 14px 16px;
}

.asset-card p,
.pdf-card p,
.category-card p {
  font-size: 0.84rem;
}

.asset-card p.meta,
.pdf-card p.meta {
  margin-bottom: 8px;
  color: var(--green);
  font-size: 0.65rem;
  line-height: 1.6;
  letter-spacing: 0.1em;
  overflow-wrap: anywhere;
}

.meta {
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
}

.pdf-card {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 28px;
}

.pdf-card a {
  display: inline-flex;
  width: fit-content;
  min-height: 44px;
  align-items: center;
  gap: 20px;
  margin-top: 8px;
  padding: 10px 16px;
  border: 1px solid var(--glass-edge);
  border-radius: 12px;
  background: var(--accent-fill);
  color: var(--accent-text);
  font-size: 0.84rem;
  font-weight: 600;
}

.pdf-card a::after {
  content: "\2197";
}

.empty {
  grid-column: 1 / -1;
  padding: 36px;
  border: 1px dashed var(--line);
  border-radius: 22px;
  background: var(--glass);
  color: var(--muted);
}

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    top: 10px;
    width: calc(100% - 28px);
    gap: 12px;
    margin-top: 10px;
    padding: 14px 16px;
    border-radius: 20px;
  }

  .header-actions {
    width: 100%;
  }

  nav {
    width: 100%;
  }

  main {
    padding: 24px 18px 48px;
  }

  .hero {
    gap: 20px;
    padding: 30px 24px;
    border-radius: 24px;
  }

  .hero > p:last-child {
    font-size: 0.92rem;
  }

  h1 {
    font-size: clamp(2.6rem, 8.5vw, 3.75rem);
  }

  .toolbar {
    margin: 26px 0;
  }

  .asset-grid {
    grid-template-columns: 1fr;
  }
}

/* Keep a solid, readable surface when backdrop blur is unavailable. */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .site-header,
  .site-footer,
  .brand-menu,
  .hero,
  .category-card,
  .asset-card,
  .pdf-card,
  input,
  .empty {
    background-color: var(--surface);
  }
}

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

  .brand-mark:hover,
  .brand-mark[aria-expanded="true"],
  .category-card:hover,
  .asset-card:hover,
  .pdf-card:hover {
    transform: none;
  }
}