/*
Theme Name: Nothing
Theme URI: https://example.com/themes/zhuangyan
Description: A clean and minimal portfolio & page theme.
Author: Yan Zhuang
Author URI: https://zhuangyan.ca
Version: 1.0.0
Text Domain: zhuangyan
*/

/* -----------------------------
   Base / tokens
------------------------------ */
:root {
  --zy-bg: #f7f7f7;
  --zy-fg: #111;
  --zy-muted: rgba(17, 17, 17, 0.55);
  --zy-accent: #111;
  --zy-border: rgba(17, 17, 17, 0.12);

  --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;
}

/* Basic reset & typography */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  color: var(--zy-fg);
  background-color: var(--zy-bg);
}

/* 首页背景：固定全屏，位于页面内容之下 */
.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;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

/* -----------------------------
   Layout: fixed corners + inner scroll
   Inspired by tianzhuochen.com
------------------------------ */
body {
  overflow: hidden; /* critical: page itself never scrolls */
}

/* 打开 Lightbox 时完全隐藏主页面，避免背后仍显示同一张图 */
body.zy-lightbox-open .zy-scroll,
body.zy-lightbox-open .zy-corners {
  visibility: hidden !important;
  pointer-events: none !important;
}

.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;
}

.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;
}

/* 登录后 WordPress 顶部工具栏不挡住四角导航与内容 */
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 img {
  display: block;
  max-height: 22px;
  width: auto;
}

.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;
}

/* 保持间距：由 body 的 data-zy-corner-layout="spaced" 控制，不依赖 body_class */
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;
}

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

/* 瀑布流：Isotope 布局，列宽由 wp_head 内联 CSS 控制 */
.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: #fff;
  overflow: hidden;
  box-sizing: border-box;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.zy-card.is-visible {
  opacity: 1;
}

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%; }

/* 目前 .zy-card 的宽度由 body.zy-waterfall-cols-N 控制桌面端列数，保持不变 */

/* 响应式断点，完全照搬 Basic 主题逻辑 */
@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;
  }
}

@media (max-width: 768px) {
  .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);
}

/* 瀑布流卡片样式：overlay（悬浮标题，参考 Basic 主题） */
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;
}

/* 瀑布流卡片样式：bottom（无边框/背景，标题在图片下方、居中、不压图） */
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;
}

/* -----------------------------
   Overlay (About / Contact)
------------------------------ */
.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: rgba(247, 247, 247, 0.92);
  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: #fff;
  border: 1px solid var(--zy-border);
  padding: 22px;
}

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

.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;
}

/* -----------------------------
   Lightbox: output in footer so DOM order is last; must cover entire page
------------------------------ */
#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;
}

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

#zy-lightbox[data-bg="white"] .zy-lightbox__caption {
  color: #111;
}

.zy-lightbox__close {
  position: absolute;
  top: 18px;
  right: 22px;
  background: none;
  border: 0;
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.zy-lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: 0;
  color: #fff;
  font-size: 18px;
  cursor: pointer;
}

.zy-lightbox__nav--prev {
  left: 18px;
}

.zy-lightbox__nav--next {
  right: 18px;
}

/* -----------------------------
   Legacy theme wrappers (kept)
------------------------------ */
.site-header,
.site-footer {
  display: none; /* we use corner navigation instead */
}

.site-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-main {
  padding: 40px 0;
}

.entry-title {
  margin: 0 0 0.5em;
}

.entry-meta {
  font-size: 0.875rem;
  color: #777;
  margin-bottom: 1em;
}

.entry-content {
  margin-top: 1em;
}

@media (max-width: 680px) {
  :root {
    --zy-corner-pad: 14px;
    --zy-scroll-pad-top: 64px;
    --zy-scroll-pad-bottom: 64px;
    --zy-scroll-pad-x: 14px;
  }

  /* Keep spacing 下在单列竖屏仍使用小内边距，让四角与内容重叠、单列图片更大 */
  body[data-zy-corner-layout="spaced"] .zy-scroll {
    --zy-scroll-pad-top: 64px !important;
    --zy-scroll-pad-bottom: 64px !important;
    --zy-scroll-pad-x: 14px !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;
  }

  .zy-masonry {
    margin-bottom: 2em;
  }
}