:root {
  --ink: #201814;
  --muted: #75695f;
  --paper: #fff9f0;
  --panel: #fffdf8;
  --line: #eadccb;
  --accent: #0f766e;
  --shadow: 0 18px 45px rgba(70, 47, 27, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.18), transparent 36rem),
    linear-gradient(120deg, #fff9f0 0%, #f8efe1 48%, #edf8f5 100%);
  font-family: "Avenir Next", "PingFang TC", "Noto Sans TC", sans-serif;
  min-height: 100vh;
}

header {
  padding: 34px clamp(18px, 4vw, 56px) 18px;
  border-bottom: 1px solid rgba(234, 220, 203, 0.8);
  background: rgba(255, 253, 248, 0.72);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.bar {
  align-items: end;
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr minmax(180px, 240px) minmax(220px, 320px);
  margin: 0 auto;
  max-width: 1280px;
}

h1 {
  font-family: Georgia, "Songti TC", serif;
  font-size: clamp(30px, 4.4vw, 62px);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 0.95;
  margin: 0;
}

.title-line {
  align-items: baseline;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.title-toggle {
  flex: 0 0 auto;
  height: 27px;
  margin-bottom: 4px;
  width: 27px;
}

.title-toggle img {
  height: 21px;
  width: 21px;
}

.hidden {
  display: none !important;
}

.meta {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}

.search,
.category-menu {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  color: var(--ink);
  font: inherit;
  min-height: 44px;
  outline: none;
  padding: 0 14px;
  width: 100%;
}

.category-menu {
  appearance: none;
  background:
    linear-gradient(45deg, transparent 50%, var(--muted) 50%) right 16px center / 7px 7px no-repeat,
    linear-gradient(135deg, var(--muted) 50%, transparent 50%) right 11px center / 7px 7px no-repeat,
    var(--panel);
  padding: 0 34px 0 12px;
}

main {
  margin: 0 auto;
  max-width: 1280px;
  padding: 22px clamp(18px, 4vw, 56px) 56px;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 6px;
  margin-top: 14px;
}

.chip {
  align-items: center;
  background: rgba(255, 253, 248, 0.82);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  gap: 8px;
  min-height: 38px;
  padding: 0 14px;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.chip:hover {
  transform: translateY(-1px);
}

.chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.count {
  color: inherit;
  font-size: 12px;
  opacity: 0.72;
}

.grid {
  align-items: start;
  display: grid;
  gap: 16px;
  grid-auto-rows: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: var(--panel);
  border: 1px solid rgba(234, 220, 203, 0.84);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(70, 47, 27, 0.1);
  overflow: hidden;
  position: relative;
  width: 100%;
}

.card-media {
  display: block;
  position: relative;
}

.card-media img {
  cursor: zoom-in;
  display: block;
  height: auto;
  position: relative;
  width: 100%;
  z-index: 2;
}

.card-media.stack {
  cursor: pointer;
  padding: 0 10px 10px 0;
}

.card-media.stack img {
  cursor: pointer;
}

.card-media.stack::before,
.card-media.stack::after {
  background: var(--panel);
  border: 1px solid rgba(234, 220, 203, 0.9);
  bottom: 0;
  box-shadow: 0 8px 18px rgba(70, 47, 27, 0.12);
  content: "";
  position: absolute;
  right: 0;
  top: 10px;
}

.card-media.stack::before {
  left: 10px;
  transform: translate(-5px, -5px);
  z-index: 0;
}

.card-media.stack::after {
  left: 5px;
  transform: translate(0, 0);
  z-index: 1;
}

.stack-badge {
  align-items: center;
  background: rgba(32, 24, 20, 0.82);
  border: 1px solid rgba(255, 248, 237, 0.26);
  border-radius: 999px;
  bottom: 18px;
  color: #fff8ed;
  display: inline-flex;
  font-size: 13px;
  font-weight: 700;
  justify-content: center;
  min-width: 38px;
  padding: 5px 9px;
  position: absolute;
  right: 18px;
  z-index: 3;
}

.caption {
  align-items: center;
  cursor: default;
  display: flex;
  gap: 10px;
  justify-content: space-between;
  padding: 10px 12px 12px;
}

.category {
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

.caption-end {
  align-items: center;
  display: inline-flex;
  flex: 1 1 auto;
  gap: 0;
  justify-content: flex-end;
  margin: 0;
  min-width: 0;
  padding: 0;
}

.filename {
  color: var(--muted);
  flex: 0 1 auto;
  font-size: 12px;
  margin-right: 6px;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-actions {
  align-items: center;
  display: inline-flex;
  flex: 0 0 auto;
  gap: 0;
  margin: 0;
  padding: 0;
}

.icon-button {
  align-items: center;
  background: transparent;
  border: 0;
  cursor: pointer;
  display: inline-flex;
  height: 19px;
  justify-content: center;
  margin: 0;
  opacity: 0.68;
  padding: 0;
  transition: opacity 160ms ease, transform 160ms ease;
  width: 19px;
}

.icon-button:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.icon-button img {
  cursor: pointer;
  filter: grayscale(1);
  height: 16px;
  margin: 0;
  padding: 0;
  width: 16px;
}

.empty {
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  display: none;
  padding: 42px;
  text-align: center;
}

.lightbox,
.description-dialog {
  align-items: center;
  display: none;
  inset: 0;
  justify-content: center;
  position: fixed;
}

.lightbox {
  background: rgba(32, 24, 20, 0.86);
  padding: 22px;
  touch-action: pan-y;
  z-index: 30;
}

.description-dialog {
  background: rgba(32, 24, 20, 0.68);
  padding: 18px;
  z-index: 35;
}

.lightbox.open,
.description-dialog.open {
  display: flex;
}

.description-panel {
  background: var(--panel);
  border: 1px solid rgba(234, 220, 203, 0.9);
  border-radius: 8px;
  box-shadow: 0 28px 80px rgba(32, 24, 20, 0.28);
  display: grid;
  gap: 12px;
  grid-template-rows: auto minmax(0, 1fr) auto;
  max-height: min(84vh, 760px);
  max-width: min(92vw, 820px);
  padding: 14px;
  width: 100%;
}

.description-head {
  align-items: center;
  display: flex;
  gap: 12px;
  justify-content: space-between;
}

.description-head h2 {
  color: var(--ink);
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  margin: 0;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.description-close {
  align-items: center;
  background: transparent;
  border: 0;
  color: var(--muted);
  cursor: pointer;
  display: inline-flex;
  flex: 0 0 auto;
  font-size: 26px;
  height: 32px;
  justify-content: center;
  line-height: 1;
  padding: 0;
  width: 32px;
}

.description-text {
  background: #fffaf3;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  font: 14px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  height: min(54vh, 520px);
  min-height: 320px;
  outline: none;
  overflow-wrap: anywhere;
  padding: 12px;
  resize: vertical;
  white-space: pre-wrap;
  width: 100%;
}

.description-text:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.14);
}

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

.description-copy,
.description-select {
  border: 1px solid var(--accent);
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  min-height: 38px;
  padding: 0 14px;
}

.description-copy {
  background: var(--accent);
  color: #fff;
}

.description-select {
  background: var(--panel);
  color: var(--accent);
}

.lightbox figure {
  margin: 0;
  max-height: 94vh;
  max-width: min(96vw, 1180px);
}

.lightbox img {
  border-radius: 8px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
  display: block;
  max-height: 86vh;
  max-width: 100%;
  object-fit: contain;
}

.lightbox figcaption {
  color: #fff8ed;
  font-size: 14px;
  padding-top: 10px;
  text-align: center;
}

.close {
  background: #fff8ed;
  border: 0;
  border-radius: 999px;
  color: var(--ink);
  cursor: pointer;
  font-size: 24px;
  height: 42px;
  line-height: 1;
  position: fixed;
  right: 18px;
  top: 18px;
  width: 42px;
}

.toast {
  background: rgba(32, 24, 20, 0.92);
  border: 1px solid rgba(255, 248, 237, 0.18);
  border-radius: 8px;
  bottom: 22px;
  box-shadow: 0 14px 36px rgba(32, 24, 20, 0.24);
  color: #fff8ed;
  font-size: 14px;
  font-weight: 700;
  left: 50%;
  max-width: calc(100vw - 32px);
  opacity: 0;
  padding: 10px 14px;
  pointer-events: none;
  position: fixed;
  transform: translate(-50%, 12px);
  transition: opacity 160ms ease, transform 160ms ease;
  z-index: 40;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 980px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  header {
    padding: 20px 16px 14px;
  }

  .bar {
    align-items: center;
    display: flex;
    gap: 14px;
    grid-template-columns: 1fr;
    justify-content: space-between;
  }

  h1 {
    font-size: 30px;
  }

  .title-toggle {
    height: 24px;
    margin-bottom: 2px;
    width: 24px;
  }

  .title-toggle img {
    height: 18px;
    width: 18px;
  }

  .meta,
  .search,
  .filters {
    display: none;
  }

  .category-menu {
    display: block;
    flex: 0 0 auto;
    max-width: 44vw;
  }

  main {
    padding: 14px 16px 44px;
  }

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

  .description-dialog {
    align-items: stretch;
    padding: 12px;
  }

  .description-panel {
    max-height: calc(100vh - 24px);
  }

  .description-text {
    min-height: 48vh;
  }

  .description-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 460px) {
  .grid {
    grid-template-columns: 1fr;
  }
}