:root {
  --bg: #0a0e16;
  --panel: rgba(19, 26, 38, 0.72);
  --panel-solid: #131a26;
  --text: #eaf0f8;
  --muted: #8d9bb0;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.18);
  --teal: #38d9ec;
  --teal-dark: #8be9f5;
  --orange: #ffb15c;
  --pink: #ff8fc0;
  --ok: #52e8a8;
  --ok-bg: rgba(82, 232, 168, 0.12);
  --warn: #ffb15c;
  --warn-bg: rgba(255, 177, 92, 0.12);
  --violet: #b79bff;
  --focus: #38d9ec;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
  --glow-1: rgba(56, 217, 236, 0.16);
  --glow-2: rgba(255, 143, 192, 0.12);
  --glow-3: rgba(255, 177, 92, 0.09);
  --blur: blur(18px);
  color-scheme: dark;
}

/* Dark is this catalog's one visual identity — no OS-driven light fallback.
   The data-theme="light" block below is a dormant hook for a future toggle. */
:root[data-theme="light"] {
  --bg: #f5f7fa;
  --panel: #ffffff;
  --panel-solid: #ffffff;
  --text: #1a2330;
  --muted: #626e7c;
  --line: #e2e7ee;
  --line-strong: #c6ced8;
  --teal: #157a90;
  --teal-dark: #0d5566;
  --orange: #dd8027;
  --pink: #c6547c;
  --ok: #2c8a5b;
  --ok-bg: #e7f5ee;
  --warn: #a8631a;
  --warn-bg: #fbf0e0;
  --focus: #2d7ff9;
  --shadow: 0 1px 2px rgba(20, 32, 44, 0.04);
  --glow-1: transparent;
  --glow-2: transparent;
  --glow-3: transparent;
  --blur: none;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 15px;
  background-color: var(--bg);
  background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 42px 42px, 42px 42px;
  background-attachment: fixed;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: -10%;
  z-index: -1;
  pointer-events: none;
  background-image: radial-gradient(1100px 560px at 10% -8%, var(--glow-1), transparent 60%),
    radial-gradient(900px 480px at 100% 0%, var(--glow-2), transparent 55%),
    radial-gradient(800px 480px at 45% 115%, var(--glow-3), transparent 60%);
}

@media (prefers-reduced-motion: no-preference) {
  body::before {
    animation: bg-drift 28s ease-in-out infinite;
  }

  @keyframes bg-drift {
    0%,
    100% {
      transform: translate(0, 0);
    }
    50% {
      transform: translate(1.5%, -1.5%);
    }
  }
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

/* ---------- reusable micro-interactions ---------- */

.sheen {
  position: relative;
  overflow: hidden;
}

.sheen::after {
  content: "";
  position: absolute;
  top: 0;
  left: -60%;
  width: 40%;
  height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-20deg);
  transition: left 0.5s ease;
  pointer-events: none;
}

.sheen:hover::after {
  left: 130%;
}

@media (prefers-reduced-motion: no-preference) {
  .topbar,
  .intro,
  .sidebar,
  .browser,
  .site-footer {
    animation: boot-in 0.5s ease-out both;
  }

  .intro {
    animation-delay: 0.05s;
  }

  .sidebar {
    animation-delay: 0.1s;
  }

  .browser {
    animation-delay: 0.14s;
  }

  .site-footer {
    animation-delay: 0.2s;
  }

  @keyframes boot-in {
    from {
      opacity: 0;
      transform: translateY(10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .stat-tile-loading {
    animation: loading-pulse 1.4s ease-in-out infinite;
  }

  @keyframes loading-pulse {
    0%,
    100% {
      opacity: 0.5;
    }
    50% {
      opacity: 1;
    }
  }
}

::selection {
  background: color-mix(in srgb, var(--teal) 35%, transparent);
  color: var(--text);
}

/* ---------- logo chip ---------- */

.brand-logo-chip {
  display: inline-flex;
  align-items: center;
  background: #ffffff;
  border-radius: 10px;
  padding: 6px 10px;
  box-shadow: var(--shadow);
  flex: none;
}

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

.brand-logo-chip-sm {
  padding: 4px 8px;
  border-radius: 8px;
  opacity: 0.94;
}

.footer-logo {
  height: 26px;
  width: auto;
  display: block;
}

/* ---------- header ---------- */

.topbar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px clamp(18px, 4vw, 52px);
  background: var(--panel);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--line);
}

.topbar::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--teal), var(--pink), var(--orange), var(--teal));
  background-size: 200% 100%;
  opacity: 0.75;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--orange);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

h1 {
  margin: 0;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--text);
}

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  h1 {
    background: linear-gradient(90deg, var(--teal-dark) 0%, var(--pink) 35%, var(--orange) 65%, var(--teal-dark) 100%);
    background-size: 250% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
  }
}

@media (prefers-reduced-motion: no-preference) {
  h1 {
    animation: header-glow-shift 10s ease-in-out infinite;
  }

  .topbar::after {
    animation: header-glow-shift 10s ease-in-out infinite;
  }

  @keyframes header-glow-shift {
    0% {
      background-position: 0% 50%;
    }
    50% {
      background-position: 100% 50%;
    }
    100% {
      background-position: 0% 50%;
    }
  }
}

.top-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.top-links a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  font-weight: 700;
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.top-links a:hover {
  border-color: var(--teal);
  color: var(--teal-dark);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--teal) 45%, transparent), 0 0 18px color-mix(in srgb, var(--teal) 25%, transparent);
}

.theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  flex: none;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.theme-toggle:hover {
  border-color: var(--teal);
  color: var(--teal-dark);
}

.theme-toggle svg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(0deg);
  opacity: 1;
  transition: opacity 0.3s ease, transform 0.4s ease;
}

.icon-moon {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(-90deg);
}

:root[data-theme="light"] .icon-sun {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg);
}

:root[data-theme="light"] .icon-moon {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(0deg);
}

/* ---------- intro / stats ---------- */

.intro {
  width: min(1480px, calc(100% - 36px));
  margin: 30px auto 0;
}

.stat-row {
  margin: 0;
  padding: 18px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stat-tile {
  padding: 0 28px;
  border-left: 1px solid var(--line);
}

.stat-tile:first-child {
  padding-left: 0;
  border-left: none;
}

.stat-tile dt {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.stat-tile dd {
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 22px;
  font-weight: 700;
  color: var(--teal-dark);
  text-shadow: 0 0 22px color-mix(in srgb, var(--teal) 40%, transparent);
}

/* ---------- layout ---------- */

.layout {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: 22px;
  width: min(1480px, calc(100% - 36px));
  margin: 22px auto 40px;
}

.sidebar,
.browser {
  background: var(--panel);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.sidebar {
  align-self: start;
  padding: 18px;
  position: sticky;
  top: 18px;
}

.sidebar-title {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
}

.sidebar-title:not(:first-child) {
  margin-top: 22px;
}

.filter-group {
  display: grid;
  gap: 8px;
}

.filter-chip {
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  text-align: left;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--text);
  border-radius: 8px;
  cursor: pointer;
  font-weight: 700;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.filter-chip:hover {
  border-color: var(--teal);
}

.filter-chip[aria-pressed="true"] {
  background: linear-gradient(135deg, var(--teal), var(--pink));
  border-color: transparent;
  color: #071019;
  box-shadow: 0 0 22px color-mix(in srgb, var(--teal) 35%, transparent);
}

.legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.5;
}

.legend li {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.legend li p {
  margin: 0;
}

/* ---------- browser ---------- */

.browser {
  min-width: 0;
  overflow: hidden;
}

.browser-toolbar {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 14px;
  border-bottom: 1px solid var(--line);
}

.search-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

#searchInput {
  width: 100%;
  min-height: 42px;
  padding: 0 13px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: color-mix(in srgb, var(--panel-solid) 60%, transparent);
  color: var(--text);
}

#searchInput::placeholder {
  color: var(--muted);
}

#clearSearch {
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--text);
  border-radius: 8px;
  cursor: pointer;
  font-weight: 700;
}

#clearSearch:hover {
  border-color: var(--teal);
  color: var(--teal-dark);
}

#searchInput:focus,
button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--focus) 45%, transparent);
  outline-offset: 2px;
}

.status-line {
  min-height: 42px;
  padding: 12px 16px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.tree,
.search-results {
  min-height: 480px;
  max-height: calc(100vh - 320px);
  overflow: auto;
  padding: 12px 10px 18px;
}

.tree::-webkit-scrollbar,
.search-results::-webkit-scrollbar {
  width: 10px;
}

.tree::-webkit-scrollbar-track,
.search-results::-webkit-scrollbar-track {
  background: transparent;
}

.tree::-webkit-scrollbar-thumb,
.search-results::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 8px;
}

.tree::-webkit-scrollbar-thumb:hover,
.search-results::-webkit-scrollbar-thumb:hover {
  background: var(--teal);
}

/* ---------- tree ---------- */

.tree-folder {
  margin: 2px 0;
}

.tree-folder > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 34px;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
}

.tree-folder > summary::-webkit-details-marker {
  display: none;
}

.tree-folder > summary::before {
  content: "";
  flex: none;
  width: 0;
  height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 7px solid var(--teal);
  transition: transform 0.15s ease;
}

.tree-folder[open] > summary::before {
  transform: rotate(90deg);
}

.tree-dataset.is-standalone > summary {
  cursor: default;
}

.tree-dataset.is-standalone > summary::before {
  display: none;
}

.folder-icon-wrap {
  flex: none;
  display: inline-flex;
  color: var(--muted);
  transition: color 0.15s ease;
}

.tree-folder[open] > summary .folder-icon-wrap {
  color: var(--teal);
}

.folder-name {
  min-width: 0;
  flex: 0 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mix-bar {
  flex: 1 1 32px;
  min-width: 24px;
  max-width: 70px;
  height: 5px;
  display: flex;
  overflow: hidden;
  border-radius: 3px;
  background: var(--line);
}

.mix-segment {
  height: 100%;
}

.mix-segment-raster {
  background: var(--teal-dark);
}

.mix-segment-table {
  background: var(--orange);
}

.mix-segment-doc {
  background: var(--pink);
}

.mix-segment-archive {
  background: var(--violet);
}

.mix-segment-other {
  background: var(--muted);
}

.tree-folder > summary:hover,
.file-row:hover,
.result-row:hover {
  background: color-mix(in srgb, var(--teal) 8%, transparent);
}

.tree-children {
  margin-left: 18px;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

@media (prefers-reduced-motion: no-preference) {
  .tree-folder[open] > .tree-children {
    animation: reveal-fade 0.28s ease;
  }

  @keyframes reveal-fade {
    from {
      opacity: 0;
      transform: translateY(-4px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

.tree-dataset {
  margin-bottom: 6px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--line-strong);
  border-radius: 10px;
  background: color-mix(in srgb, var(--panel-solid) 35%, transparent);
  transition: border-color 0.15s ease;
}

.tree-dataset.is-zenodo {
  border-left-color: color-mix(in srgb, var(--ok) 55%, transparent);
}

.tree-dataset > summary {
  padding: 12px 14px;
  font-weight: 800;
}

.status-dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line-strong);
}

.tree-dataset.is-zenodo .status-dot {
  background: var(--ok);
  box-shadow: 0 0 8px color-mix(in srgb, var(--ok) 70%, transparent);
}

.tree-dataset.is-request .status-dot {
  background: var(--warn);
  box-shadow: 0 0 8px color-mix(in srgb, var(--warn) 70%, transparent);
}

@media (prefers-reduced-motion: no-preference) {
  .tree-dataset.is-zenodo .status-dot {
    animation: status-pulse-ok 2.6s ease-in-out infinite;
  }

  .tree-dataset.is-request .status-dot {
    animation: status-pulse-warn 2.6s ease-in-out infinite;
  }

  @keyframes status-pulse-ok {
    0%,
    100% {
      box-shadow: 0 0 6px color-mix(in srgb, var(--ok) 55%, transparent);
    }
    50% {
      box-shadow: 0 0 14px color-mix(in srgb, var(--ok) 90%, transparent);
    }
  }

  @keyframes status-pulse-warn {
    0%,
    100% {
      box-shadow: 0 0 6px color-mix(in srgb, var(--warn) 55%, transparent);
    }
    50% {
      box-shadow: 0 0 14px color-mix(in srgb, var(--warn) 90%, transparent);
    }
  }
}

.tree-dataset > .tree-children {
  margin: 0 14px 12px;
  padding-left: 14px;
}

.dataset-title {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1 1 auto;
  gap: 3px;
}

.dataset-title-main {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.dataset-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dataset-desc-hint {
  appearance: none;
  -webkit-appearance: none;
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: 1px solid color-mix(in srgb, var(--teal) 45%, transparent);
  border-radius: 5px;
  background: transparent;
  padding: 0;
  color: var(--teal-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10.5px;
  font-weight: 800;
  cursor: pointer;
  transition: background 0.15s ease, box-shadow 0.15s ease;
}

.dataset-desc-hint:hover {
  background: color-mix(in srgb, var(--teal) 16%, transparent);
  box-shadow: 0 0 12px color-mix(in srgb, var(--teal) 30%, transparent);
}

.desc-popover {
  max-width: 380px;
  margin: auto;
  padding: 18px 20px;
  border: 1px solid color-mix(in srgb, var(--teal) 55%, transparent);
  border-radius: 12px;
  background: var(--panel-solid);
  color: var(--text);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.55;
  white-space: pre-line;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--teal) 35%, transparent),
    0 0 44px color-mix(in srgb, var(--teal) 45%, transparent), 0 24px 60px rgba(0, 0, 0, 0.5);
}

.desc-popover::backdrop {
  background: rgba(4, 6, 10, 0.65);
  backdrop-filter: blur(2px);
}

.dataset-tag-icon {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: 1px solid color-mix(in srgb, var(--teal) 45%, transparent);
  border-radius: 5px;
  background: transparent;
  color: var(--teal-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10.5px;
  font-weight: 800;
  cursor: pointer;
  transition: background 0.15s ease, box-shadow 0.15s ease;
}

.dataset-tag-icon:hover {
  background: color-mix(in srgb, var(--teal) 16%, transparent);
  box-shadow: 0 0 12px color-mix(in srgb, var(--teal) 30%, transparent);
}


.count-pill {
  flex: none;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.file-row,
.result-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  min-height: 32px;
  padding: 5px 8px;
  border-radius: 6px;
}

.file-name,
.result-path {
  min-width: 0;
  overflow: hidden;
  color: var(--text);
  font-weight: 550;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.result-path {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
}

.file-type {
  flex: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 0.02em;
  padding: 2px 7px;
  border-radius: 4px;
  color: var(--muted);
  background: color-mix(in srgb, currentColor 14%, transparent);
}

.file-type-raster {
  color: var(--teal-dark);
}

.file-type-table {
  color: var(--orange);
}

.file-type-doc {
  color: var(--pink);
}

.file-type-archive {
  color: var(--violet);
}


.result-row {
  border-bottom: 1px solid var(--line);
  border-radius: 0;
}

.empty-state,
.error-state {
  padding: 24px 16px;
  color: var(--muted);
}

.error-state {
  color: #ff6b6b;
  font-weight: 700;
}

/* ---------- badges ---------- */

.dataset-badges {
  flex: none;
  display: flex;
  align-items: center;
  gap: 6px;
}

.badge {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 26px;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: none;
  font: inherit;
  font-size: 12px;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.badge-zenodo {
  background: var(--ok-bg);
  color: var(--ok);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--ok) 30%, transparent);
}

.badge-zenodo:hover {
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--ok) 50%, transparent), 0 0 16px color-mix(in srgb, var(--ok) 35%, transparent);
}

.badge-contact {
  color: var(--muted);
  border-color: var(--line-strong);
}

.badge-contact:hover {
  color: var(--teal-dark);
  border-color: var(--teal);
  box-shadow: 0 0 14px color-mix(in srgb, var(--teal) 22%, transparent);
}

.badge-small {
  min-height: 22px;
  font-size: 11px;
  padding: 0 8px;
}

/* ---------- footer ---------- */

.site-footer {
  position: relative;
  border-top: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  padding: 26px clamp(18px, 4vw, 52px) 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: space-between;
  align-items: flex-start;
}

.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--orange), var(--pink), var(--teal));
  opacity: 0.6;
}

.footer-main {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  max-width: 70ch;
}

.footer-main p {
  margin: 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.5;
}

.footer-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}

.report-issue {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 11px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--teal), var(--teal-dark));
  color: #071019;
  font-weight: 700;
  font-size: 11.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: box-shadow 0.15s ease, filter 0.15s ease;
}

.report-issue:hover {
  filter: brightness(1.05);
  box-shadow: 0 0 22px color-mix(in srgb, var(--teal) 45%, transparent);
}

/* ---------- agreement dialog ---------- */

.agreement-dialog {
  width: min(480px, calc(100% - 48px));
  padding: 26px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--panel-solid);
  color: var(--text);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

.agreement-dialog::backdrop {
  background: rgba(4, 6, 10, 0.65);
  backdrop-filter: blur(2px);
}

.agreement-dialog h2 {
  margin: 0 0 6px;
  font-size: 19px;
}

.agreement-subtitle {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 13px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.agreement-terms {
  margin: 0 0 22px;
  padding-left: 20px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.55;
}

.agreement-terms li + li {
  margin-top: 8px;
}

.agreement-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.agreement-cancel,
.agreement-accept {
  min-height: 40px;
  padding: 0 16px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
}

.agreement-cancel {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--text);
}

.agreement-cancel:hover {
  border-color: var(--teal);
}

.agreement-accept {
  border: none;
  background: linear-gradient(135deg, var(--teal), var(--teal-dark));
  color: #071019;
  font-weight: 800;
}

.agreement-accept:hover {
  filter: brightness(1.05);
  box-shadow: 0 0 22px color-mix(in srgb, var(--teal) 45%, transparent);
}

/* ---------- responsive ---------- */

@media (max-width: 860px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .top-links {
    justify-content: flex-start;
  }

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

  .sidebar {
    position: static;
  }

  .browser-toolbar {
    grid-template-columns: 1fr;
  }

  #clearSearch {
    justify-self: start;
  }

  .tree,
  .search-results {
    max-height: none;
  }

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

  .footer-actions {
    align-items: flex-start;
  }
}