/* =========================================================
   Personal Navigation — front-end theme
   ========================================================= */

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

:root {
  --accent: #6366f1;
  --radius-xl: 22px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 9px;
  --font: "Inter", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

[data-theme="dark"] {
  --bg: #060912;
  --bg-soft: #0a1120;
  --text: #eef1fb;
  --muted: #919bb3;
  --muted-2: #68738d;
  --glass: rgba(16, 23, 39, 0.56);
  --glass-hover: rgba(24, 33, 55, 0.76);
  --line: rgba(148, 163, 184, 0.12);
  --line-strong: rgba(148, 163, 184, 0.22);
  --shadow: 0 22px 50px -30px rgba(0, 0, 0, 0.9);
  --input-bg: rgba(9, 14, 27, 0.62);
  --code-bg: rgba(255, 255, 255, 0.055);
  --grid-line: rgba(148, 163, 184, 0.045);
  --orb-1: rgba(99, 102, 241, 0.46);
  --orb-2: rgba(34, 211, 238, 0.24);
  --orb-3: rgba(168, 85, 247, 0.28);
  --noise-opacity: 0.35;
  color-scheme: dark;
}

[data-theme="light"] {
  --bg: #eef1f9;
  --bg-soft: #f8f9fe;
  --text: #18213a;
  --muted: #68738c;
  --muted-2: #8b94a9;
  --glass: rgba(255, 255, 255, 0.62);
  --glass-hover: rgba(255, 255, 255, 0.9);
  --line: rgba(24, 33, 58, 0.08);
  --line-strong: rgba(24, 33, 58, 0.16);
  --shadow: 0 22px 50px -32px rgba(38, 48, 84, 0.4);
  --input-bg: rgba(255, 255, 255, 0.78);
  --code-bg: rgba(24, 33, 58, 0.055);
  --grid-line: rgba(24, 33, 58, 0.045);
  --orb-1: rgba(99, 102, 241, 0.22);
  --orb-2: rgba(34, 211, 238, 0.18);
  --orb-3: rgba(236, 72, 153, 0.14);
  --noise-opacity: 0.16;
  color-scheme: light;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

[hidden] {
  display: none !important;
}

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

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

a {
  color: inherit;
}

/* ---------------------------------------------------------
   Background
   --------------------------------------------------------- */

.bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% -20%, var(--bg-soft), transparent 60%),
    var(--bg);
}

.bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 10%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 10%, transparent 75%);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.9;
  animation: drift 26s ease-in-out infinite alternate;
  will-change: transform;
}

.orb-a {
  width: 52vw;
  height: 52vw;
  min-width: 420px;
  min-height: 420px;
  left: -12vw;
  top: -22vh;
  background: var(--orb-1);
}

.orb-b {
  width: 40vw;
  height: 40vw;
  min-width: 340px;
  min-height: 340px;
  right: -8vw;
  top: 18vh;
  background: var(--orb-2);
  animation-delay: -8s;
}

.orb-c {
  width: 34vw;
  height: 34vw;
  min-width: 300px;
  min-height: 300px;
  left: 28vw;
  bottom: -26vh;
  background: var(--orb-3);
  animation-delay: -15s;
}

.noise {
  position: absolute;
  inset: 0;
  opacity: var(--noise-opacity);
  background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 3px 3px;
  mix-blend-mode: overlay;
}

body[data-bg="ocean"] .orb-a {
  background: rgba(14, 165, 233, 0.4);
}
body[data-bg="ocean"] .orb-b {
  background: rgba(45, 212, 191, 0.26);
}
body[data-bg="ocean"] .orb-c {
  background: rgba(59, 130, 246, 0.32);
}

body[data-bg="sunset"] .orb-a {
  background: rgba(244, 63, 94, 0.34);
}
body[data-bg="sunset"] .orb-b {
  background: rgba(251, 146, 60, 0.3);
}
body[data-bg="sunset"] .orb-c {
  background: rgba(168, 85, 247, 0.3);
}

body[data-bg="mono"] .orb-a {
  background: rgba(148, 163, 184, 0.2);
}
body[data-bg="mono"] .orb-b {
  background: rgba(100, 116, 139, 0.16);
}
body[data-bg="mono"] .orb-c {
  background: color-mix(in srgb, var(--accent) 22%, transparent);
}

body[data-bg="image"] .bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to bottom, rgba(5, 8, 17, 0.68), rgba(5, 8, 17, 0.88)),
    var(--bg-image);
  background-size: cover;
  background-position: center;
}

[data-theme="light"] body[data-bg="image"] .bg::before {
  background-image:
    linear-gradient(to bottom, rgba(245, 247, 255, 0.7), rgba(245, 247, 255, 0.9)),
    var(--bg-image);
}

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(4vw, 6vh, 0) scale(1.12);
  }
}

/* ---------------------------------------------------------
   Top bar
   --------------------------------------------------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 13px clamp(16px, 3vw, 38px);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  backdrop-filter: blur(20px) saturate(150%);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: 13px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 82%, #fff),
      color-mix(in srgb, var(--accent) 52%, #22d3ee));
  box-shadow:
    0 10px 22px -10px color-mix(in srgb, var(--accent) 80%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  overflow: hidden;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  padding: 6px;
  object-fit: contain;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.25;
}

.brand-copy strong {
  font-size: 15px;
  font-weight: 650;
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-copy small {
  margin-top: 2px;
  font-size: 11.5px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search {
  position: relative;
  flex: 1;
  max-width: 540px;
  margin-left: auto;
}

.search input {
  width: 100%;
  height: 44px;
  padding: 0 74px 0 42px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 13.5px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.search input::placeholder {
  color: var(--muted-2);
}

.search input:focus {
  border-color: color-mix(in srgb, var(--accent) 52%, var(--line));
  background: color-mix(in srgb, var(--input-bg) 84%, var(--accent) 4%);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 15%, transparent);
}

.search input::-webkit-search-cancel-button {
  display: none;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  width: 17px;
  height: 17px;
  transform: translateY(-50%);
  color: var(--muted-2);
  pointer-events: none;
}

.search-kbd {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  padding: 2px 7px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--code-bg);
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 11px;
  line-height: 16px;
  pointer-events: none;
}

.search-clear {
  position: absolute;
  right: 34px;
  top: 50%;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  transform: translateY(-50%);
  border: 0;
  border-radius: 50%;
  background: var(--code-bg);
  color: var(--muted);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
}

.search-clear:hover {
  color: var(--text);
  background: color-mix(in srgb, var(--text) 10%, transparent);
}

.search input:not(:placeholder-shown) ~ .search-clear {
  display: grid;
}

.search input:not(:placeholder-shown) ~ .search-kbd {
  display: none;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: none;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--input-bg);
  color: var(--muted);
  cursor: pointer;
  text-decoration: none;
  transition: color 0.18s, border-color 0.18s, background 0.18s, transform 0.18s;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.icon-btn:hover {
  color: var(--text);
  border-color: var(--line-strong);
  background: var(--glass-hover);
  transform: translateY(-1px);
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

[data-theme="dark"] .icon-moon,
[data-theme="light"] .icon-sun {
  display: none;
}

/* ---------------------------------------------------------
   Layout / sidebar
   --------------------------------------------------------- */

.shell {
  display: grid;
  grid-template-columns: 224px minmax(0, 1fr);
  gap: 30px;
  width: 100%;
  max-width: 1480px;
  margin: 0 auto;
  padding: 28px clamp(16px, 3vw, 38px) 64px;
}

.sidebar {
  position: sticky;
  top: 86px;
  align-self: start;
  max-height: calc(100vh - 112px);
  padding-right: 4px;
  overflow: auto;
  scrollbar-width: thin;
}

.side-block + .side-block {
  margin-top: 26px;
}

.side-label {
  margin: 0 0 9px 11px;
  color: var(--muted-2);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.cat-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cat-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: 0;
  border-radius: 11px;
  background: transparent;
  color: var(--muted);
  font-size: 13.5px;
  text-align: left;
  cursor: pointer;
  transition: background 0.18s, color 0.18s;
}

.cat-item:hover {
  background: color-mix(in srgb, var(--text) 6%, transparent);
  color: var(--text);
}

.cat-item.active {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--text);
}

.cat-item.active::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 8px;
  bottom: 8px;
  width: 3px;
  border-radius: 3px;
  background: var(--accent);
  box-shadow: 0 0 12px color-mix(in srgb, var(--accent) 70%, transparent);
}

.cat-icon {
  display: grid;
  place-items: center;
  width: 27px;
  height: 27px;
  flex: none;
  border-radius: 8px;
  overflow: hidden;
  background: color-mix(in srgb, var(--cat-color, var(--accent)) 14%, transparent);
  color: var(--cat-color, var(--accent));
  font-size: 13px;
  font-weight: 600;
}

.cat-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.cat-count {
  min-width: 22px;
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--code-bg);
  color: var(--muted-2);
  font-size: 10.5px;
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.cat-item.active .cat-count {
  color: color-mix(in srgb, var(--accent) 85%, var(--text));
  background: color-mix(in srgb, var(--accent) 14%, transparent);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0 6px;
}

.tag-chip {
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-size: 11.5px;
  cursor: pointer;
  transition: all 0.16s;
}

.tag-chip:hover {
  border-color: var(--line-strong);
  color: var(--text);
}

.tag-chip.active {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: color-mix(in srgb, var(--accent) 70%, var(--text));
}

.tag-chip .tag-num {
  margin-left: 4px;
  color: var(--muted-2);
  font-size: 10px;
}

.side-tip {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 30px 8px 0;
  color: var(--muted-2);
  font-size: 11.5px;
}

.side-tip kbd {
  padding: 1px 6px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--code-bg);
  font-family: var(--mono);
  font-size: 10.5px;
}

.tip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}

/* ---------------------------------------------------------
   Main head
   --------------------------------------------------------- */

.main {
  min-width: 0;
}

.main-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin: 2px 0 20px;
}

.main-title h1 {
  margin: 0;
  font-size: 24px;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.main-title p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12.5px;
}

.sort-tabs {
  display: flex;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.sort-tabs button {
  padding: 6px 11px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font-size: 11.5px;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.16s;
}

.sort-tabs button:hover {
  color: var(--text);
}

.sort-tabs button.active {
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: color-mix(in srgb, var(--accent) 82%, var(--text));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 18%, transparent);
}

.active-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: -6px 0 16px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid color-mix(in srgb, var(--accent) 32%, var(--line));
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  color: color-mix(in srgb, var(--accent) 78%, var(--text));
  font-size: 11.5px;
}

.filter-chip button {
  display: grid;
  place-items: center;
  width: 16px;
  height: 16px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 20%, transparent);
  color: inherit;
  font-size: 12px;
  line-height: 1;
  cursor: pointer;
}

.filter-reset {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 11.5px;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.filter-reset:hover {
  color: var(--text);
}

/* ---------------------------------------------------------
   Cards
   --------------------------------------------------------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(236px, 1fr));
  gap: 14px;
}

.site-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 11px;
  min-height: 156px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--glass);
  box-shadow: var(--shadow);
  overflow: hidden;
  isolation: isolate;
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  backdrop-filter: blur(16px) saturate(130%);
  animation: card-in 0.42s var(--ease) both;
  transition:
    transform 0.22s var(--ease),
    border-color 0.22s,
    background 0.22s,
    box-shadow 0.22s;
}

.site-card::before {
  content: "";
  position: absolute;
  left: 20%;
  right: 20%;
  top: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    color-mix(in srgb, var(--accent) 75%, transparent),
    transparent
  );
  opacity: 0;
  transition: opacity 0.25s;
}

.site-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(
    120% 100% at 100% 0%,
    color-mix(in srgb, var(--accent) 10%, transparent),
    transparent 55%
  );
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
}

.site-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
  background: var(--glass-hover);
  box-shadow:
    0 26px 54px -28px color-mix(in srgb, var(--accent) 34%, #000),
    var(--shadow);
}

.site-card:hover::before,
.site-card:hover::after {
  opacity: 1;
}

.site-card.pinned {
  border-color: color-mix(in srgb, var(--accent) 24%, var(--line));
}

.card-hit {
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
}

.card-hit:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -3px;
}

.card-head {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
  padding-right: 22px;
}

.site-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: none;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: color-mix(in srgb, var(--text) 5%, transparent);
  color: var(--accent);
  font-size: 17px;
  font-weight: 700;
  overflow: hidden;
}

.site-icon img {
  width: 100%;
  height: 100%;
  padding: 5px;
  object-fit: contain;
}

.site-icon.letter {
  background:
    linear-gradient(
      135deg,
      color-mix(in srgb, var(--accent) 22%, transparent),
      color-mix(in srgb, var(--accent) 7%, transparent)
    );
  color: color-mix(in srgb, var(--accent) 80%, var(--text));
}

.card-title-wrap {
  min-width: 0;
  flex: 1;
}

.site-title {
  display: flex;
  align-items: center;
  gap: 5px;
  margin: 0;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
}

.site-title-text {
  overflow: hidden;
  text-overflow: ellipsis;
}

.pin-badge {
  flex: none;
  color: #fbbf24;
  font-size: 11px;
  line-height: 1;
  filter: drop-shadow(0 0 6px rgba(251, 191, 36, 0.35));
}

.site-host {
  margin-top: 2px;
  color: var(--muted-2);
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-desc {
  display: -webkit-box;
  margin: 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.55;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
}

body[data-density="compact"] .site-desc {
  -webkit-line-clamp: 1;
}

body[data-density="compact"] .site-card {
  min-height: 138px;
  gap: 8px;
}

.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: auto;
  min-width: 0;
}

.card-tags {
  display: flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
  overflow: hidden;
}

.tag-mini {
  position: relative;
  z-index: 2;
  max-width: 92px;
  padding: 2px 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--code-bg);
  color: var(--muted);
  font-size: 10.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  transition: all 0.16s;
}

.tag-mini:hover {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
  color: var(--text);
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 5px;
  flex: none;
  color: var(--muted-2);
  font-size: 10.5px;
  font-variant-numeric: tabular-nums;
}

.card-meta svg {
  width: 12px;
  height: 12px;
}

.card-copy {
  position: absolute;
  right: 10px;
  top: 10px;
  z-index: 3;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--bg) 55%, transparent);
  color: var(--muted);
  opacity: 0;
  cursor: pointer;
  transition: opacity 0.18s, color 0.18s, background 0.18s;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.card-copy svg {
  width: 13px;
  height: 13px;
}

.site-card:hover .card-copy,
.card-copy:focus-visible {
  opacity: 1;
}

.card-copy:hover {
  color: var(--text);
  background: var(--glass-hover);
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Skeleton */
.skeleton-card {
  min-height: 156px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(
      100deg,
      var(--code-bg) 20%,
      color-mix(in srgb, var(--text) 9%, transparent) 38%,
      var(--code-bg) 56%
    );
  background-size: 220% 100%;
  animation: shimmer 1.25s linear infinite;
}

@keyframes shimmer {
  to {
    background-position: -220% 0;
  }
}

/* ---------------------------------------------------------
   Empty state
   --------------------------------------------------------- */

.empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  padding: 42px 24px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-xl);
  background: color-mix(in srgb, var(--glass) 55%, transparent);
  text-align: center;
}

.empty-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  margin-bottom: 16px;
  border-radius: 18px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
  font-size: 24px;
}

.empty-title {
  margin: 0 0 7px;
  font-size: 16px;
  font-weight: 600;
}

.empty-desc {
  max-width: 360px;
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.7;
}

.empty-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid color-mix(in srgb, var(--accent) 42%, var(--line));
  border-radius: 10px;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: color-mix(in srgb, var(--accent) 80%, var(--text));
  font-size: 12.5px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.18s;
}

.empty-btn:hover {
  background: color-mix(in srgb, var(--accent) 22%, transparent);
  transform: translateY(-1px);
}

/* ---------------------------------------------------------
   Footer / toast
   --------------------------------------------------------- */

.footer {
  margin-top: 38px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted-2);
  font-size: 11.5px;
  text-align: center;
}

.footer a {
  color: var(--muted);
  text-decoration: none;
}

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

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 200;
  max-width: 320px;
  padding: 10px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 11px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  box-shadow: var(--shadow);
  color: var(--text);
  font-size: 12.5px;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.22s, transform 0.22s;
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* ---------------------------------------------------------
   Responsive
   --------------------------------------------------------- */

@media (max-width: 1080px) {
  .shell {
    grid-template-columns: 198px minmax(0, 1fr);
    gap: 24px;
  }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  }
}

@media (max-width: 880px) {
  .shell {
    display: block;
    padding-top: 18px;
  }

  .sidebar {
    position: static;
    max-height: none;
    margin-bottom: 22px;
    overflow: visible;
  }

  .side-block + .side-block {
    margin-top: 16px;
  }

  .cat-nav {
    flex-direction: row;
    gap: 7px;
    padding-bottom: 4px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .cat-nav::-webkit-scrollbar {
    display: none;
  }

  .cat-item {
    width: auto;
    flex: none;
    padding: 7px 11px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--glass);
  }

  .cat-item.active::before {
    display: none;
  }

  .cat-item.active {
    border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
  }

  .cat-icon {
    width: 22px;
    height: 22px;
    border-radius: 6px;
    font-size: 11px;
  }

  .cat-count {
    background: transparent;
    padding: 0;
  }

  .tag-cloud {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
  }

  .tag-cloud::-webkit-scrollbar {
    display: none;
  }

  .tag-chip {
    flex: none;
  }

  .side-tip {
    display: none;
  }

  .main-head {
    align-items: center;
  }
}

@media (max-width: 680px) {
  .topbar {
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px 14px;
  }

  .brand-copy small {
    display: none;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 11px;
    font-size: 18px;
  }

  .search {
    order: 3;
    flex-basis: 100%;
    max-width: none;
    margin-left: 0;
  }

  .search input {
    height: 42px;
  }

  .top-actions {
    margin-left: auto;
  }

  .icon-btn {
    width: 38px;
    height: 38px;
    border-radius: 11px;
  }

  .shell {
    padding: 16px 14px 48px;
  }

  .main-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
  }

  .main-title h1 {
    font-size: 20px;
  }

  .sort-tabs {
    width: 100%;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .sort-tabs::-webkit-scrollbar {
    display: none;
  }

  .sort-tabs button {
    flex: 1;
    padding: 6px 8px;
  }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(158px, 1fr));
    gap: 10px;
  }

  .site-card {
    min-height: 148px;
    padding: 13px;
    border-radius: 14px;
  }

  .site-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    font-size: 15px;
  }

  .site-title {
    font-size: 13.5px;
  }

  .site-desc {
    font-size: 11.5px;
  }

  .card-copy {
    opacity: 0.75;
  }

  .footer {
    margin-top: 28px;
  }

  .toast {
    right: 14px;
    bottom: 14px;
    left: 14px;
    max-width: none;
    text-align: center;
  }
}

@media (max-width: 380px) {
  .card-grid {
    grid-template-columns: 1fr;
  }

  .brand-copy strong {
    font-size: 14px;
  }
}

@media (hover: none) {
  .card-copy {
    opacity: 0.6;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .orb {
    animation: none;
  }
}