/* ========================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ======================================== */
:root {
  /* Colors */
  --color-primary: #c990ea;
  --color-black: #000000;
  --color-dark: #111111;
  --color-darker: #1a1a1a;
  --color-white: #ffffff;
  --color-light-gray: #f3f3f3;
  --color-gray: #c2c2c2;
  --color-dark-gray: #585858;
  
  /* Typography */
  --font-family: "Noto Sans TC", sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-md: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 32px;
  --line-height-base: 1.75;
  --line-height-heading: 1.8;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 15px;
  --spacing-lg: 20px;
  --spacing-xl: 30px;
  
  /* Border radius */
  --radius-sm: 5px;
  --radius-md: 15px;
  --radius-lg: 20px;
  
  /* Borders */
  --border-width: 4px;
  --border-style: solid;
  --border-primary: var(--border-width) var(--border-style) var(--color-primary);
  --border-white: var(--border-width) var(--border-style) var(--color-white);
  
  /* Breakpoints */
  --breakpoint-tablet: 768px;
  --breakpoint-desktop: 1200px;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-black);
  color: var(--color-white);
  margin: 0;
  padding: 0;
  line-height: var(--line-height-base);
}

a {
  text-decoration: none;
  color: var(--color-primary);
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-white);
  margin: 0 0 0.5em;
  line-height: var(--line-height-heading);
}

p {
  margin: 0 0 1em;
}

video {
  max-width: 100%;
}

/* ========================================
   LAYOUT COMPONENTS
   ======================================== */
.wrap {
  position: relative;
  margin: 0 auto;
  overflow: hidden;
  min-height: 100vh;
  width: 100%;
  background: var(--color-black);
}

.content {
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  width: 100%;
}

.bottom-space {
  height: 80px;
}

/* ========================================
   HEADER COMPONENTS
   ======================================== */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: var(--spacing-md) 0;
  width: 100%;
}

.logo {
  width: 120px;
  max-width: 45%;
  display: inline-block;
}

.btn-back {
  color: var(--color-white);
  font-size: var(--font-size-lg);
  display: flex;
  align-items: center;
  font-weight: bold;
}

.btn-back .icon {
  width: 0.4em;
  font-size: 1.3em;
  margin-right: var(--spacing-sm);
}

/* ========================================
   SEARCH COMPONENTS
   ======================================== */
.search-bar {
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-primary);
  background-color: var(--color-dark);
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 50%;
}

.search-bar input {
  font-size: var(--font-size-sm);
  outline: none;
  color: var(--color-primary);
  background: transparent;
  margin-left: 1.2em;
  width: calc(100% - 48px);
  border: none;
}

.search-bar input::placeholder {
  color: var(--color-white);
}

.btn-search {
  width: 2em;
  height: 2em;
  border-radius: 50%;
  background-color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-black);
  border: 3px solid var(--color-primary);
  font-size: var(--font-size-md);
}

.btn-search .icon {
  width: 1em;
}

/* ========================================
   NAVIGATION COMPONENTS
   ======================================== */
footer {
  position: fixed;
  bottom: 0;
  left: 0;
  z-index: 10;
  width: 100%;
  display: flex;
  justify-content: center;
}

.menu {
  width: 100%;
  list-style: none;
  padding: 0;
  margin: 0;
  background-color: var(--color-light-gray);
  display: flex;
}

.menu > li {
  flex-basis: 33.3%;
  max-width: 33.3%;
  color: var(--color-gray);
}

.menu > li a,
.menu > li a:hover,
.menu > li a:active {
  color: inherit;
}

.menu > li.menu-active {
  color: var(--color-primary);
  background-color: var(--color-dark);
}

.btn-menu {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-md);
  padding: 0.75em 0;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.btn-menu .icon {
  width: 1.875em;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-menu .text {
  width: auto;
  letter-spacing: 0.05em;
  font-weight: 500;
  white-space: nowrap;
  text-align: center;
  margin: 0;
  line-height: 1.2;
}

/* ========================================
   TYPOGRAPHY UTILITIES
   ======================================== */
.t-xs { font-size: var(--font-size-xs); }
.t-sm { font-size: var(--font-size-sm); }
.t-md { font-size: var(--font-size-md); }
.t-lg { 
  font-size: var(--font-size-lg);
  line-height: var(--line-height-heading);
}
.t-primary { color: var(--color-primary); }

/* ========================================
   ICON COMPONENTS
   ======================================== */
.icon {
  display: inline-block;
}

.icon svg {
  width: 100%;
}

.i-back {
  color: var(--color-white);
}

/* ========================================
   PANEL COMPONENTS
   ======================================== */
.banner {
  width: 100%;
  margin-bottom: var(--spacing-lg);
}

.panel {
  background-color: var(--color-dark);
  border-radius: var(--radius-md);
  color: var(--color-white);
  padding: var(--spacing-md);
  line-height: var(--line-height-base);
}

.panel-b {
  border: var(--border-primary);
  background-color: var(--color-darker);
  color: var(--color-white);
  position: relative;
  overflow: visible;
  margin: var(--spacing-xl) 0;
  padding-top: 2em;
}

.panel-b .title {
  border: var(--border-primary);
  color: var(--color-black);
  background-color: var(--color-primary);
  position: absolute;
  left: 50%;
  top: 0;
  padding: 0 0.75em;
  text-align: center;
  min-width: 120px;
  line-height: var(--line-height-base);
  transform: translate(-50%, -50%);
  border-radius: var(--radius-md);
}

.track {
  margin-left: calc(-1 * var(--spacing-md));
  margin-right: calc(-1 * var(--spacing-md));
  border-left: 0;
  border-right: 0;
  padding: var(--spacing-xs) 0;
}

.track .title {
  left: var(--spacing-md);
  z-index: 2;
  transform: translate(0, -50%);
}

/* ========================================
   GALLERY COMPONENTS
   ======================================== */
.scroll-wrap {
  width: calc(100% + var(--spacing-md));
  overflow-y: scroll;
  display: flex;
}

.scroll-wrap::-webkit-scrollbar {
  height: 0;
}

.scroll-wrap .img-container {
  min-width: 80px;
  border: var(--border-primary);
  border-radius: var(--radius-sm);
  margin: 2px;
}

.scroll-wrap .img-container::before {
  padding-bottom: 100%;
}

.img-container {
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  border: var(--border-primary);
}

.img-container:before {
  content: "";
  display: block;
  padding-bottom: 70%;
}

/* ========================================
   CONTENT COMPONENTS
   ======================================== */
.image-item {
  background-color: var(--color-light-gray);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
}

.image-item .img-container {
  border: var(--border-white);
  border-top-left-radius: 18px;
  border-top-right-radius: 18px;
}

.caption {
  color: var(--color-black);
  padding: 0.5em 1em;
  line-height: 1.5;
  font-weight: 500;
}

.text-item {
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  overflow: hidden;
  border: 3px solid var(--color-white);
  color: var(--color-black);
  display: flex;
  width: 100%;
  margin-bottom: 10px;
}

.text-item .title {
  font-weight: 500;
  line-height: 1.5;
  padding: 0.25em 1em;
  flex: 1;
}

.btn-go {
  background-color: var(--color-primary);
  color: var(--color-black);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5em;
  font-size: var(--font-size-md);
}

.btn-go .icon {
  width: 1em;
}

/* ========================================
   FORM COMPONENTS
   ======================================== */
.filter {
  display: flex;
  align-items: center;
  color: var(--color-white);
}

.filter select {
  padding: 0.5em 1.5em 0.5em 0.5em;
  margin-left: 5px;
  color: var(--color-white);
  min-width: 90px;
  appearance: none;
  border: 2px solid var(--color-white);
  border-radius: var(--radius-md);
  background: url(../img/down.svg) right 5px center/10px no-repeat, var(--color-primary);
}

.filter select option {
  color: initial;
}

.switch {
  background-color: var(--color-light-gray);
  border: 2px solid var(--color-white);
  border-radius: var(--radius-md);
  position: relative;
  z-index: 1;
  cursor: pointer;
}

.switch input[type=checkbox] {
  position: absolute;
  visibility: hidden;
}

.switch input[type=checkbox] + .option span:nth-child(1) {
  color: var(--color-white);
}

.switch input[type=checkbox]:checked + .option::before {
  background-color: #A4B2F1;
  left: 48px;
}

.switch input[type=checkbox]:checked + .option span:nth-child(2) {
  color: var(--color-white);
}

.switch input[type=checkbox]:checked + .option span:nth-child(1) {
  color: var(--color-dark-gray);
}

.switch .option {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.switch .option::before {
  content: "";
  background-color: var(--color-primary);
  border-radius: 14px;
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 48px;
  transition: 0.2s ease-out all;
  z-index: -1;
  border: 2px solid var(--color-primary);
}

/* ========================================
   MEME/CARD COMPONENTS
   ======================================== */
.meme-item {
  margin-bottom: var(--spacing-lg);
  display: flex;
}

.meme-img {
  width: 50%;
  position: relative;
  z-index: 1;
  border-radius: var(--radius-md);
  border: var(--border-white);
}

.meme-img:before {
  padding-bottom: 132%;
}

.meme-info {
  flex: 1;
  margin-left: -18px;
  margin-top: 10px;
  padding-left: 18px;
  border-top-right-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
  border: var(--border-white);
  border-left: 0;
  background-color: var(--color-light-gray);
  color: var(--color-dark-gray);
}

.meme-info b {
  color: var(--color-black);
}

.meme-info .head {
  padding: 10px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-top-right-radius: 14px;
  border-bottom-right-radius: 14px;
  border-left: var(--border-primary);
}

.meme-info .head h3 {
  color: var(--color-white);
}

.meme-info .body {
  padding: 10px;
  line-height: 1.5em;
}

.col-2-wrap {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -10px;
}

.col-2-wrap .item {
  max-width: 50%;
  flex-basis: 50%;
  padding: 0.25em 10px;
}

/* ========================================
   MODAL COMPONENTS
   ======================================== */
.mfp-gallery .mfp-close {
  position: fixed;
  top: auto;
  bottom: var(--spacing-lg);
  right: var(--spacing-md);
  left: var(--spacing-md);
  width: auto;
  background-color: var(--color-primary);
  color: var(--color-black);
  font-size: var(--font-size-lg);
  letter-spacing: 0.1em;
  text-align: center;
  border-radius: var(--radius-md);
  opacity: 1;
  font-weight: 500;
  font-family: var(--font-family);
  border: 2px solid var(--color-primary);
}

img.mfp-img {
  padding: var(--spacing-lg) 0 80px;
}

.mfp-figure:after {
  background: transparent;
  box-shadow: none;
}

.mfp-bg {
  background: rgba(0, 0, 0, 0.8);
  opacity: 1;
  backdrop-filter: blur(20px);
}

.white-popup {
  max-width: 90%;
  border-radius: var(--radius-sm);
  background: transparent;
  text-align: center;
}

.white-popup video {
  max-height: calc(100vh - 120px);
}

.mfp-inline {
  position: relative;
}

.mfp-inline::after {
  content: "";
  display: block;
  background: url(../img/play.svg) center/100% no-repeat;
  position: absolute;
  width: var(--spacing-xl);
  height: var(--spacing-xl);
  left: calc(50% - 15px);
  top: calc(50% - 15px);
  z-index: 1;
}

/* ========================================
   TWO-COLUMN GRID UTILITIES
   ======================================== */
.two-col-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 16px;
}

.two-col-list .item {
  line-height: 1.8;
  font-size: var(--font-size-md);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media screen and (max-width: 480px) {
  .two-col-list {
    grid-template-columns: 1fr;
  }
  
  .meme-info .head .t-lg {
    font-size: 13.2px;
    word-break: break-word;
    line-height: var(--line-height-heading);
  }
  
  .meme-info .body.t-lg {
    font-size: 17.6px;
  }
}

@media screen and (min-width: 481px) {
  .meme-info .head .t-lg {
    font-size: var(--spacing-lg);
    line-height: var(--line-height-heading);
  }
}

@media screen and (min-width: 768px) {
  .wrap {
    max-width: 720px;
  }

  .content {
    padding: 0 var(--spacing-xl);
  }

  .bottom-space {
    height: 100px;
  }

  .menu {
    max-width: 720px;
  }

  .btn-menu {
    font-size: var(--font-size-lg);
    gap: 6px;
  }

  .btn-back {
    font-size: 21.6px;
  }

  .search-bar input {
    font-size: 16.8px;
  }

  .btn-search {
    font-size: var(--font-size-lg);
  }

  .logo {
    width: 120px;
  }

  .t-xs { font-size: 14.4px; }
  .t-sm { font-size: 16.8px; }
  .t-md { font-size: 19.2px; }
  .t-lg { 
    font-size: 21.6px;
    line-height: var(--line-height-heading);
  }

  .panel {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
  }

  .panel-b {
    padding-top: 2em;
  }

  .track {
    margin-left: calc(-1 * var(--spacing-xl));
    margin-right: calc(-1 * var(--spacing-xl));
    padding: var(--spacing-sm) 0;
  }

  .track .title {
    left: var(--spacing-xl);
  }

  .track .scroll-wrap .img-container {
    min-width: 100px;
    margin: var(--spacing-xs);
  }
}

@media screen and (min-width: 1200px) {
  .t-xl {
    font-size: var(--font-size-xl);
  }
}