/* ================================ */
/*  基本                            */
/* ================================ */
body {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 32px;

  margin: 0 auto;
  box-sizing: border-box;
  padding: 16px;
  width: 100%;
  height: 100vh;
  max-width: 1700px;
  overflow: hidden;

  background: #f2f2f1;
  font-family: "Noto Sans TC", sans-serif;
  color: #1f1f1f;
}

.mask_black {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 6000;
  display: grid;
  width: 100%;
  height: 100vh;
  background: #0006;
}
.mask_black.hidden {
  display: none;
}

/* ================================ */
/*  頁尾                            */
/* ================================ */
footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  font-size: 14px;
  color: #444;
}
footer a {
  all: unset;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}

/* ================================ */
/*  頁首                            */
/* ================================ */
header {
  height: 48px;
}
#search_area {
  display: grid;
  grid-template-columns: auto auto 1fr;

  margin: 0 auto;
  outline: none;
  border-radius: 6px;
  border: 1px solid #d1d1d1;
  height: 100%;
  max-width: 700px;

  font-size: 14px;
  background: linear-gradient(#fff, #f7f7f7);
  box-shadow: inset 0 1px 0 #fffc, 0 6px 14px #0001;
}
#search_area hr {
  all: unset;
  width: 1px;
  background: linear-gradient(0deg, #0000 2px, #d1d1d1, #0000 calc(100% - 2px));
}
#search_type {
  all: unset;
  min-width: 120px;
  line-height: 48px;
  padding: 0 16px;
  background: url(./arrow_down.png) no-repeat right / 32px;
}
#search_keyword {
  all: unset;
  padding: 0 16px;
}

/* ================================ */
/*  卡片                            */
/* ================================ */
#cards {
  display: grid;
  align-content: start;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
  height: 100%;
  min-height: 0px;
  overflow: auto;
}
#cards:empty:after, #cards.not_found:after {
  grid-column: 1 / -1;
  text-align: center;
  font-size: 18px;
  margin-top: 60px;
  color: #888;
}
#cards.not_found:after { content: "未找到符合的結果"; }
#cards:empty:after { content: "讀取中..."; }
.card {
  display: grid;
  align-items: center;
  grid-template-columns: auto auto 1fr auto auto;
  grid-template-areas:
    "line type name date date"
    "line title title title title"
    "line img img img img"
    "line tags tags tags id";
  gap: 4px;

  border-radius: 6px;
  padding: 16px;
  padding-left: 20px;
  border: 1px solid #d1d1d1;

  background: linear-gradient(180deg, #ffffff, #f6f6f6);
  box-shadow: inset 0 1px 0 #fffc, 0 6px 14px #0001;
  cursor: pointer;
}
.card::before {
  content: "";
  grid-area: line;
  margin-left: -10px;
  width: 1px;
  height: 100%;
  background: linear-gradient(0deg, #0000 2px, #d1d1d1, #0000 calc(100% - 2px));
}
.card.hidden {
  display: none;
}
.card .type {
  grid-area: type;
  border-radius: 4px;
  border: 1px solid #d1d1d1;
  padding: 2px 6px;

  font-size: 12px;
  letter-spacing: 1px;
  background: #f8f8f8;
  color: #6f6f6f;
}
.card .name {
  grid-area: name;
  font-size: 11px;
  letter-spacing: 1px;
  color: #6f6f6f;
  margin-left: 4px;
}
.card .date {
  grid-area: date;
  font-size: 11px;
  letter-spacing: 1px;
  color: #6f6f6f;
}
.card .title {
  grid-area: title;
  margin: 6px 0;
  font-size: 15px;
  font-weight: bold;
}
.card img {
  grid-area: img;
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 4px;
  filter: grayscale(30%) contrast(.9);
  margin-bottom: 8px;
}
.card .tags {
  grid-area: tags;
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.card .tag {
  font-size: 12px;
  letter-spacing: 1px;
  color: #6f6f6f;
  background: #fff;
  padding: 0 4px 1px;
  border-radius: 4px;
}
.card .id {
  grid-area: id;
  font-size: 12px;
  letter-spacing: 1px;
  color: #6f6f6f;
  text-align: right;
}
.card .id:before {
  content: "#";
}

/* ================================ */
/*  解答卡片                        */
/* ================================ */
#card_content .bg {
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 8px;

  margin: auto;
  border-radius: 6px;
  border: 1px solid #d1d1d1;
  padding: 32px 24px 24px;
  box-sizing: border-box;
  width: calc(100% - 32px);
  max-width: 720px;
  max-height: 80vh;

  background: linear-gradient(#ffffff, #f4f4f4);
  box-shadow: 0 30px 80px #0004;
  overflow-y: auto;
}
#card_content .close_btn {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 36px;
  height: 36px;
  line-height: 36px;
  text-align: center;
  cursor: pointer;
}
#card_content .title {
  font-size: 22px;
  font-weight: bold;
}
#card_content .content {
  min-height: 0px;
  height: 100%;
  overflow: auto;
}
#card_content .content hr {
  all: unset;
  background: linear-gradient(90deg, #0000, #d1d1d1 10%, #d1d1d1 90%, #0000);
  display: block;
  width: 100%;
  height: 2px;
  margin: 14px 0;
}
#card_content .content h3 {
  all: unset;
  display: block;
  margin: 24px 16px -6px;
  font-weight: bold;
  font-size: 22px;
  color: #5d5d5d;
}
#card_content .links {
  display: flex;
  margin: -6px 0 24px;
  gap: 12px;
  padding: 0 16px;
  flex-wrap: wrap;
}
#card_content .links a {
  all: unset;
  font-size: 15px;
  color: #444;
  cursor: pointer;
  color: #6f6f6f;
  border-bottom: 1px solid currentColor;
  line-height: 17px;
}
#card_content .links a:before {
    content: "";
    background: url(./link.png) no-repeat center / contain;
    display: inline-block;
    width: 14px;
    height: 14px;
    vertical-align: bottom;
    margin-right: 1px;
}
#card_content .text {
  line-height: 1.75;
  color: #6f6f6f;
  margin: 14px 0;
}
#card_content img {
  margin: 14px auto;
  display: block;
  border-radius: 4px;
  border: 1px solid #ccc;
  box-shadow: 4px 6px 8px -2px #0004;
  box-sizing: border-box;
  max-width: 100%;
  max-height: 60vh;
  object-fit: contain;
}
#card_content .code_holder {
  position: relative;
  margin: -6px 0 24px;
  border-radius: 4px;
  border: 1px solid #d1d1d1;
  overflow: hidden;
  background: linear-gradient(#d1d1d1, #d1d1d1) no-repeat left / 3px,
    linear-gradient(#f3f3f3, #ededed);
}
#card_content .code_holder .copy_btn {
  all: unset;
  position: absolute;
  right: 0;
  top: 0;
  width: 36px;
  height: 36px;
  background: url(./copy_btn.png);
  cursor: pointer;
  transition: opacity .6s;
}
#card_content .code_holder .copy_btn:active {
  transition: none;
  opacity: .5;
}
#card_content .code_holder .cnt {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.6;
  white-space: pre;
  color: #2a2a2a;
  padding: 16px 18px;
  overflow: auto;
}
#card_content .bottom {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}
#card_content .bottom:empty {
  display: none;
}
#card_content .bottom a {
  all: unset;
  font-size: 15px;
  color: #444;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}

/* ================================ */
/*  複製用                          */
/* ================================ */
#copy_el {
  all: unset;
  opacity: 0;
  position: fixed;
  width: 1px;
  height: 1px;
  bottom: 0;
  right: 0;
  pointer-events: none;
}