/*
 * Portfolio styles for oaknut theme.
 * Scoped to .zy-portfolio-page where needed to avoid interfering with oaknut FSE pages.
 * CSS variable prefix --zy- kept for data migration consistency with zhuangyan.
 */

/* ----------------------------------------
   Tokens
   Colour tokens inherit from oaknut theme.json presets automatically —
   works across all style variants (depths, midnight, orange-juice, etc.).
   Fallbacks are for any context where WP preset vars are not injected.
   -------------------------------------- */
:root {
  --zy-bg:     var(--wp--preset--color--background, #f7f7f7);
  --zy-fg:     var(--wp--preset--color--foreground, #111);
  --zy-muted:  color-mix(in srgb, var(--zy-fg) 55%, transparent);
  --zy-accent: var(--zy-fg);
  --zy-border: color-mix(in srgb, var(--zy-fg) 12%, transparent);

  --zy-corner-pad: 22px;
  --zy-corner-font: 12px;
  --zy-corner-letter: 0.08em;

  --zy-scroll-pad-top: 80px;
  --zy-scroll-pad-bottom: 80px;
  --zy-scroll-pad-x: 22px;
}

/* ----------------------------------------
   Page-level: overflow hidden (scoped)
   -------------------------------------- */
body.zy-portfolio-page,
body.zy-portfolio-single {
  overflow: hidden;
  background-color: var(--zy-bg);
  color: var(--zy-fg);
  /* font-family intentionally omitted — inherited from WP global styles via wp_head() */
}

body.zy-portfolio-page.zy-lightbox-open .zy-scroll,
body.zy-portfolio-page.zy-lightbox-open .zy-corners,
body.zy-portfolio-single.zy-lightbox-open .zy-scroll,
body.zy-portfolio-single.zy-lightbox-open .zy-corners {
  visibility: hidden !important;
  pointer-events: none !important;
}

/* ----------------------------------------
   Fullscreen background
   -------------------------------------- */
.zy-home-bg {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.zy-home-bg__media {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.zy-home-bg__image {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.zy-home-bg__video {
  object-fit: cover;
}

.zy-home-bg__overlay {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: #000;
  pointer-events: none;
}

/* ----------------------------------------
   Four-corner navigation
   -------------------------------------- */
.zy-corners {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
}

.zy-corner {
  position: absolute;
  pointer-events: auto;
  font-size: var(--zy-corner-font);
  letter-spacing: var(--zy-corner-letter);
  text-transform: uppercase;
  line-height: 1.2;
}

.zy-corner a,
.zy-corner button {
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  color: inherit;
  background: transparent;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-decoration: none;
}

.zy-corner a:hover,
.zy-corner button:hover {
  text-decoration: underline;
}

.zy-corner--lt {
  top: var(--zy-corner-pad);
  left: var(--zy-corner-pad);
}

.zy-corner--rt {
  top: var(--zy-corner-pad);
  right: var(--zy-corner-pad);
}

.zy-corner--lb {
  bottom: var(--zy-corner-pad);
  left: var(--zy-corner-pad);
}

.zy-corner--rb {
  bottom: var(--zy-corner-pad);
  right: var(--zy-corner-pad);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

.zy-corner--top {
  top: var(--zy-corner-pad);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
}

/* Admin bar offset */
body.admin-bar .zy-corners .zy-corner--lt,
body.admin-bar .zy-corners .zy-corner--rt,
body.admin-bar .zy-corners .zy-corner--top {
  top: calc(46px + var(--zy-corner-pad)) !important;
}

body.admin-bar .zy-scroll {
  padding-top: calc(46px + var(--zy-scroll-pad-top)) !important;
}

.zy-site-title {
  font-size: var(--zy-corner-font);
  letter-spacing: var(--zy-corner-letter);
  text-transform: uppercase;
  white-space: nowrap;
}

.zy-site-title a {
  color: inherit;
  text-decoration: none;
}

.zy-site-title img {
  display: block;
  max-height: 22px;
  width: auto;
}

/* ----------------------------------------
   Scroll container + grid
   -------------------------------------- */
.zy-scroll {
  position: fixed;
  inset: 0;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  z-index: 10;
  padding: var(--zy-scroll-pad-top) var(--zy-scroll-pad-x) var(--zy-scroll-pad-bottom);
}

.zy-scroll:focus {
  outline: none;
}

body[data-zy-corner-layout="spaced"] .zy-scroll {
  --zy-scroll-pad-top: 160px !important;
  --zy-scroll-pad-bottom: 120px !important;
  --zy-scroll-pad-x: 140px !important;
  padding-top: var(--zy-scroll-pad-top) !important;
  padding-left: var(--zy-scroll-pad-x) !important;
  padding-right: var(--zy-scroll-pad-x) !important;
  padding-bottom: var(--zy-scroll-pad-bottom) !important;
}

@media (max-width: 680px) {
  body[data-zy-corner-layout="spaced"] .zy-scroll {
    --zy-scroll-pad-x: 14px !important;
    padding-left: 14px !important;
    padding-right: 14px !important;
    padding-bottom: 64px !important;
  }
}

.zy-grid {
  width: min(1600px, 100%);
  margin: 0 auto;
}

/* ----------------------------------------
   Masonry / Waterfall (Isotope)
   -------------------------------------- */
.zy-masonry {
  position: relative;
  overflow: hidden;
  margin: 0 0 3em;
}

.zy-card {
  float: left;
  display: block;
  padding: 9px;
  border: 1px solid var(--zy-border);
  background: color-mix(in srgb, var(--zy-bg) 88%, var(--zy-fg) 12%);
  overflow: hidden;
  box-sizing: border-box;
  opacity: 0;
  transition: opacity 0.4s ease;
  text-decoration: none;
  color: inherit;
}

.zy-card.is-visible {
  opacity: 1;
}

.zy-card:hover {
  text-decoration: none;
}

/* Column widths (set via body class, overridden by inline CSS when gutter > 0) */
body.zy-waterfall-cols-1 .zy-masonry .zy-card { width: 100%; }
body.zy-waterfall-cols-2 .zy-masonry .zy-card { width: 50%; }
body.zy-waterfall-cols-3 .zy-masonry .zy-card { width: 33.333333%; }
body.zy-waterfall-cols-4 .zy-masonry .zy-card { width: 25%; }
body.zy-waterfall-cols-5 .zy-masonry .zy-card { width: 20%; }
body.zy-waterfall-cols-6 .zy-masonry .zy-card { width: 16.666666%; }

@media only screen and (max-width: 1160px) {
  body.zy-waterfall-cols-3 .zy-masonry .zy-card,
  body.zy-waterfall-cols-4 .zy-masonry .zy-card,
  body.zy-waterfall-cols-5 .zy-masonry .zy-card,
  body.zy-waterfall-cols-6 .zy-masonry .zy-card {
    width: 50%;
  }
}

@media only screen and (max-width: 800px) {
  .zy-masonry .zy-card {
    width: 100% !important;
  }
}

.zy-card img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}

.zy-card__meta {
  padding: 10px 12px;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--zy-muted);
}

.zy-card__title {
  color: var(--zy-fg);
}

/* Card style: overlay (hover reveals title) */
body.zy-waterfall-style-overlay .zy-masonry .zy-card {
  position: relative;
  padding: 0;
  border: none;
  background: transparent;
}

body.zy-waterfall-style-overlay .zy-card__meta {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.6);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 1;
}

body.zy-waterfall-style-overlay .zy-card:hover .zy-card__meta {
  opacity: 1;
}

body.zy-waterfall-style-overlay .zy-card__title {
  color: #fff;
  text-align: center;
  padding: 0 1em;
}

/* Card style: bottom (no border, title below image, centered) */
body.zy-waterfall-style-bottom .zy-masonry .zy-card {
  padding: 0;
  border: none;
  background: transparent;
}

body.zy-waterfall-style-bottom .zy-card__meta {
  padding: 10px 12px;
  text-align: center;
}

body.zy-waterfall-style-bottom .zy-card__title {
  color: var(--zy-fg);
  text-align: center;
}

/* ----------------------------------------
   Load more indicator
   -------------------------------------- */
.zy-load-indicator {
  display: none;
  text-align: center;
  padding: 20px;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--zy-muted);
}

/* ----------------------------------------
   No results
   -------------------------------------- */
.zy-portfolio-page .no-results {
  padding: 60px 0;
  text-align: center;
  color: var(--zy-muted);
}

.zy-portfolio-page .no-results .page-title {
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ----------------------------------------
   Overlay panels (About / Contact / Works)
   -------------------------------------- */
.zy-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
}

.zy-overlay[aria-hidden="false"] {
  display: block;
}

.zy-overlay__backdrop {
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--zy-bg) 92%, transparent);
  backdrop-filter: blur(8px);
}

.zy-overlay__panel {
  position: absolute;
  top: clamp(60px, 10vh, 120px);
  left: 50%;
  transform: translateX(-50%);
  width: min(900px, calc(100vw - 44px));
  max-height: calc(100vh - 140px);
  overflow: auto;
  background: var(--zy-bg);
  border: 1px solid var(--zy-border);
  padding: 22px;
}

.zy-overlay__close {
  position: sticky;
  top: 0;
  float: right;
  background: transparent;
  border: 0;
  font-size: 12px;
  letter-spacing: var(--zy-corner-letter);
  text-transform: uppercase;
  padding: 6px 0;
  cursor: pointer;
  color: inherit;
}

/* ----------------------------------------
   Social links (right-bottom corner)
   -------------------------------------- */
.zy-social {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.zy-social a {
  font-size: 11px;
  color: inherit;
  text-decoration: none;
}

.zy-social a:hover {
  text-decoration: underline;
}

/* ----------------------------------------
   Lightbox
   -------------------------------------- */
#zy-lightbox.zy-lightbox {
  position: fixed !important;
  top: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  left: 0 !important;
  z-index: 2147483647 !important;
  display: none;
  isolation: isolate;
  pointer-events: none;
  background: transparent;
}

#zy-lightbox.zy-lightbox[aria-hidden="false"] {
  display: flex !important;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
}

#zy-lightbox .zy-lightbox__backdrop {
  position: absolute !important;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1;
  background: rgba(0, 0, 0, 0.9);
  pointer-events: auto;
}

#zy-lightbox .zy-lightbox__inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  max-width: 100vw;
  max-height: 100vh;
  pointer-events: none;
}

#zy-lightbox .zy-lightbox__figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  pointer-events: auto;
}

#zy-lightbox .zy-lightbox__image {
  display: block;
  max-width: calc(100vw - 80px);
  max-height: calc(100vh - 120px);
  width: auto;
  height: auto;
  object-fit: contain;
  cursor: pointer;
}

.zy-lightbox__caption {
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

body[data-lightbox-bg="theme"] .zy-lightbox__caption {
  color: var(--zy-fg);
}

/* ----------------------------------------
   Single portfolio detail page
   -------------------------------------- */
body.zy-portfolio-single .zy-scroll {
  --zy-scroll-pad-top: 100px;
}

.zy-single-main {
  padding-bottom: 60px;
}

.zy-single-article {
  max-width: 960px;
  margin: 0 auto;
}

.zy-single-header {
  padding-bottom: 32px;
}

.zy-single-title {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0;
  color: var(--zy-muted);
}

.zy-single-content {
  /* Block editor gallery images */
}

.zy-single-content img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  transition: opacity 0.2s ease;
}

.zy-single-content img:hover {
  opacity: 0.88;
}

/* Gallery block: remove default margins, stack images vertically */
.zy-single-content .wp-block-gallery,
.zy-single-content .blocks-gallery-grid {
  display: block !important;
  margin: 0 !important;
  padding: 0 !important;
  columns: unset !important;
}

.zy-single-content .wp-block-gallery .wp-block-image,
.zy-single-content .blocks-gallery-grid .blocks-gallery-item {
  display: block !important;
  width: 100% !important;
  margin: 0 0 2px !important;
  padding: 0 !important;
}

.zy-single-content .wp-block-gallery figure,
.zy-single-content .blocks-gallery-grid figure {
  margin: 0;
}

/* Individual image blocks */
.zy-single-content .wp-block-image {
  margin: 0 0 2px;
}

.zy-single-content .wp-block-image figure {
  margin: 0;
}

.zy-single-content .wp-block-image a {
  display: block;
  line-height: 0;
}

.zy-single-footer {
  padding-top: 28px;
}

.zy-single-cats {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--zy-muted);
}

.zy-single-cats a {
  color: inherit;
  text-decoration: none;
}

.zy-single-cats a:hover {
  text-decoration: underline;
}

.zy-single-sep {
  display: inline-block;
  margin: 0 6px;
  opacity: 0.4;
}

/* ----------------------------------------
   Filter bar
   -------------------------------------- */

.zy-filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  padding: 0 var(--zy-scroll-pad-x) 40px;
}

.zy-filter-btn {
  background: transparent;
  border: 0;
  font-size: var(--zy-corner-font);
  letter-spacing: var(--zy-corner-letter);
  text-transform: uppercase;
  color: var(--zy-muted);
  padding: 8px 16px;
  cursor: pointer;
  transition: color 0.2s;
  position: relative;
}

.zy-filter-btn::after {
  content: '|';
  position: absolute;
  right: -1px;
  opacity: 0.25;
}

.zy-filter-btn:last-child::after { content: ''; }

.zy-filter-btn:hover,
.zy-filter-btn.is-active {
  color: var(--zy-fg);
}

.zy-filter-btn.is-active::before {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 16px;
  right: 16px;
  height: 1px;
  background: var(--zy-fg);
}

/* ----------------------------------------
   Hamburger button
   -------------------------------------- */

.zy-hamburger {
  position: fixed;
  top: var(--zy-corner-pad);
  right: var(--zy-corner-pad);
  z-index: 51;
  background: transparent;
  border: 0;
  padding: 4px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.zy-hamburger__line {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--zy-fg);
  transition: all 0.35s ease;
  transform-origin: center;
}

/* open state → becomes × */
.zy-hamburger.is-open .zy-hamburger__line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.zy-hamburger.is-open .zy-hamburger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.zy-hamburger.is-open .zy-hamburger__line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ----------------------------------------
   Hamburger fullscreen overlay
   -------------------------------------- */

.zy-overlay--hamburger {
  display: block !important; /* override .zy-overlay default display:none */
  opacity: 0;
  z-index: -1;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.zy-overlay--hamburger[aria-hidden="false"] {
  opacity: 1;
  z-index: 100;
  pointer-events: auto;
}

.zy-overlay--hamburger .zy-overlay__backdrop {
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: none;
}

/* centered nav box */
.zy-hamburger__nav {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  z-index: 1;
}

/* list reset */
.zy-hamburger__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* category items */
.zy-hamburger__item {
  display: block;
  width: 100%;
  font-size: 26px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 300;
  padding: 12px 40px;
  cursor: pointer;
  background: transparent;
  border: 0;
  color: var(--zy-fg);
  /* entrance animation initial state */
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease, transform 0.4s ease, color 0.2s;
}

.zy-hamburger__item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.zy-hamburger__item:hover,
.zy-hamburger__item.is-active {
  color: var(--zy-muted);
}

.zy-hamburger__item.is-active {
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* admin bar offset */
body.admin-bar .zy-hamburger {
  top: calc(46px + var(--zy-corner-pad));
}