/*
Theme Name: Shardisland
Theme URI: https://cn.shardisland.com
Author: 夏德岛科技
Description: 夏德岛科技影视作品站 — 现代轻量主题（重构自 creek，复用 portfolio 数据模型）。极简黑白灰、瀑布流、多平台视频判定（优酷/B站/新片场）。
Version: 0.1.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: shardisland
*/

/* ============================================================ Tokens */
:root{
    --ink:#0b0b0c;
    --ink-2:#6b6b70;
    --ink-3:#9a9aa0;
    --line:#ececec;
    --line-2:#f4f4f4;
    --paper:#fbfbfb;
    --paper-2:#fff;
    --radius:3px;
    --maxw:1320px;
    --pad:32px;
    --ease:cubic-bezier(.2,.7,.2,1);
    --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
    --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
    --hero-h:calc(100vh - 84px); /* 填满视口，但底部预留固定 84px 给分类筛选条——改变窗口高度时筛选条始终完整露在底部、不被吃掉（预留量为像素常数，故与高度无关）*/
}

/* ============================================================ Base */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{margin:0;font-weight:500;letter-spacing:-.01em}
::selection{background:var(--ink);color:#fff}

.sd-main{min-height:60vh}

/* ============================================================ Header */
.sd-header{position:sticky;top:0;z-index:100;background:var(--paper);border-bottom:1px solid var(--line);transition:background .3s var(--ease),border-color .3s var(--ease)}
.sd-header-inner{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad);height:66px;display:flex;align-items:center;justify-content:space-between}
.sd-logo{font-family:Helvetica,"Helvetica Neue",Arial,sans-serif;font-weight:700;font-size:22px;letter-spacing:-.02em;text-transform:lowercase;white-space:nowrap;color:var(--ink);transition:color .3s var(--ease)}
.sd-burger{display:none} /* 仅移动端显示 */

/* 首页图片之上：导航透明、深色字（更显高级，去掉白字）；滚过大图后（JS 加 .is-scrolled）淡入浅色实底 */
.sd-header--overlay{position:fixed;left:0;right:0;top:0;background:transparent;border-bottom-color:transparent}
.sd-header--overlay.is-scrolled{background:var(--paper);border-bottom-color:var(--line)}
.sd-header-right{display:flex;align-items:center;gap:24px}
.sd-nav .sd-menu{list-style:none;display:flex;gap:30px;margin:0;padding:0;font-size:14px}
.sd-nav a{color:var(--ink-2);transition:color .2s}
.sd-nav a:hover{color:var(--ink)}
.sd-actions{--nav-gap:36px;display:flex;align-items:center;gap:var(--nav-gap)}
.sd-action{font-size:13px;line-height:1;color:var(--ink);white-space:nowrap;cursor:pointer;transition:opacity .2s}
.sd-action:hover{opacity:.55}
/* 语言切换：分隔线两侧的间距与其它项一致（都＝--nav-gap），整条导航节奏统一 */
.sd-lang{color:var(--ink);letter-spacing:.02em;border-left:1px solid var(--ink-3);padding-left:var(--nav-gap)}
.sd-lang:hover{opacity:.55;color:var(--ink)}
/* 英文版：顶部英文导航用大写 + 字距，呼应参考图右上角的英文风格（logo 不变）*/
html[lang="en"] .sd-action{text-transform:uppercase;letter-spacing:.09em;font-size:12px}

/* ============================================================ Hero（留白 + slogan 主文字，左对齐）*/
.sd-hero{max-width:var(--maxw);margin:0 auto;padding:clamp(104px,17vh,188px) var(--pad) clamp(72px,11vh,128px)}
.sd-hero-inner{max-width:1040px;animation:sd-rise .9s var(--ease) both}
.sd-hero-brand{font-family:Helvetica,"Helvetica Neue",Arial,sans-serif;font-size:14px;letter-spacing:.22em;text-transform:lowercase;color:var(--ink-3);margin:0 0 14px}
.sd-hero-slogan{font-size:clamp(21px,2.6vw,33px);font-weight:600;letter-spacing:-.02em;line-height:1.34;margin:0 0 26px;max-width:23em}
.sd-hero-text{color:var(--ink-2);font-size:clamp(14px,1.2vw,16px);font-weight:300;line-height:2.05;max-width:640px;margin:0}

/* 图片背景 hero —— 无磨砂；16:9（cover 适配任何屏幕，不变形不留黑边）。
   图本身钉死在背景（fixed），下面内容向上滑动盖住它。仅底部渐变保证白字可读、顶部留亮给深色导航。 */
.sd-hero--image{max-width:none;margin:0;padding:0;position:fixed;top:0;left:0;right:0;z-index:0;height:var(--hero-h);display:flex;align-items:flex-end;background-size:cover;background-position:center;background-repeat:no-repeat}
.sd-hero--image::after{content:"";position:absolute;inset:0;background:linear-gradient(to bottom,rgba(0,0,0,0) 46%,rgba(0,0,0,.62));pointer-events:none}
.sd-hero--image .sd-hero-inner{position:relative;z-index:1;max-width:var(--maxw);width:100%;margin:0 auto;padding:0 var(--pad) clamp(40px,7vh,92px)}
.sd-hero--image .sd-hero-brand{color:rgba(255,255,255,.82)}
.sd-hero--image .sd-hero-slogan{color:#fff;max-width:18em}
.sd-hero--image .sd-hero-text{color:rgba(255,255,255,.92)}

/* 内容（作品区 + 页脚）盖在钉死的大图之上，向上滑动揭开/遮住背景图。
   白底必须铺满整个视口宽，否则左右缝隙会露出钉死的大图。 */
body.has-hero-image{overflow-x:clip} /* 防 100vw 满铺底导致横向滚动（首页导航是 fixed，不影响） */
.has-hero-image .sd-main{padding-top:var(--hero-h)}
.has-hero-image .sd-works{position:relative;z-index:1}
.has-hero-image .sd-works::before{content:"";position:absolute;z-index:-1;top:0;bottom:0;left:50%;transform:translateX(-50%);width:100vw;background:var(--paper)}
.has-hero-image .sd-footer{position:relative;z-index:1}

/* ============================================================ Works / filter */
.sd-works{max-width:var(--maxw);margin:0 auto;padding:10px var(--pad) 128px}
.sd-filter{display:flex;flex-wrap:wrap;gap:9px;justify-content:center;margin:0 0 64px}
.sd-filter button{appearance:none;border:1px solid var(--line);background:transparent;color:var(--ink-2);font:inherit;font-size:13px;padding:8px 19px;border-radius:999px;cursor:pointer;transition:all .25s var(--ease)}
.sd-filter button:hover{border-color:var(--ink-3);color:var(--ink)}
.sd-filter button.is-active{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ============================================================ Masonry grid（框随缩略图真实比例）*/
.sd-grid{column-count:3;column-gap:26px}
@media(max-width:1000px){.sd-grid{column-count:2}}
@media(max-width:600px){.sd-grid{column-count:1}}
.sd-card{break-inside:avoid;margin:0 0 26px;border-radius:var(--radius);overflow:hidden;background:var(--paper-2);box-shadow:0 1px 0 var(--line);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.sd-card.is-hidden{display:none}
.sd-card-link{display:block;position:relative}
.sd-card-thumb{display:block;position:relative;overflow:hidden;background:#ededed;aspect-ratio:4/3}
.sd-card-thumb img{width:100%;height:100%;object-fit:cover;filter:grayscale(100%) contrast(1.02);transition:filter .6s var(--ease),transform .8s var(--ease),opacity .6s var(--ease)}
.sd-card-thumb img.sd-lazy{opacity:0}
.sd-card-thumb img.sd-lazy.is-loaded{opacity:1}
.sd-card:hover .sd-card-thumb img{filter:grayscale(0%);transform:scale(1.045)}
.sd-card-meta{position:absolute;inset:auto 0 0 0;padding:44px 18px 16px;background:linear-gradient(transparent,rgba(10,10,12,.74));opacity:0;transform:translateY(6px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.sd-card:hover .sd-card-meta{opacity:1;transform:none}
.sd-card-title{color:#fff;font-size:15px;font-weight:500}
.sd-card-play{position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:50%;border:1px solid rgba(255,255,255,.75);background:rgba(0,0,0,.12);backdrop-filter:blur(3px);opacity:0;transform:scale(.85);transition:.4s var(--ease)}
.sd-card-play::after{content:"";position:absolute;top:50%;left:54%;transform:translate(-50%,-50%);border-left:9px solid #fff;border-top:6px solid transparent;border-bottom:6px solid transparent}
.sd-card:hover .sd-card-play{opacity:1;transform:scale(1)}

/* ============================================================ Single portfolio */
.sd-work{max-width:1000px;margin:0 auto;padding:60px var(--pad) 0}
.sd-work-head{text-align:center;margin:0 0 40px}
.sd-work-tags{display:flex;gap:8px;justify-content:center;margin:0 0 18px}
.sd-work-tag{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);border:1px solid var(--line);padding:5px 13px;border-radius:999px;transition:.2s}
.sd-work-tag:hover{border-color:var(--ink-3);color:var(--ink)}
.sd-work-title{font-size:clamp(30px,4.6vw,50px);font-weight:500;letter-spacing:-.02em;margin:0 0 22px}
.sd-work-spec{list-style:none;display:flex;gap:42px;justify-content:center;flex-wrap:wrap;margin:0;padding:0}
.sd-work-spec li{display:flex;flex-direction:column;gap:4px;font-size:15px}
.sd-work-spec span{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.sd-work-media{margin:0 0 44px}
.sd-work-media--img img{width:100%;border-radius:var(--radius)}
.sd-work-desc{max-width:740px;margin:0 auto 52px;color:var(--ink-2);font-size:16px;line-height:1.9}
.sd-work-desc p{margin:0 0 1em}
.sd-work-gallery{display:flex;flex-direction:column;gap:30px;margin:0 0 60px}
.sd-work-figure{margin:0}
.sd-work-figure img{width:100%;border-radius:var(--radius)}
.sd-work-figure figcaption{margin-top:10px;text-align:center;color:var(--ink-3);font-size:13px}
.sd-work-cta{text-align:center;margin:0 0 52px}
.sd-btn{display:inline-block;padding:13px 34px;border:1px solid var(--ink);border-radius:999px;font-size:14px;transition:.25s var(--ease)}
.sd-btn:hover{background:var(--ink);color:#fff}
.sd-work-nav{display:flex;align-items:center;justify-content:space-between;gap:18px;border-top:1px solid var(--line);padding:26px 0 90px;margin-top:20px;font-size:14px;color:var(--ink-2)}
.sd-work-nav a{transition:color .2s}
.sd-work-nav a:hover{color:var(--ink)}
.sd-work-nav-home{font-weight:500;color:var(--ink)}
.sd-work-nav-prev,.sd-work-nav-next{max-width:34%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============================================================ Video 16:9 */
.sd-video{position:relative;width:100%;aspect-ratio:16/9;background:#000;border-radius:var(--radius);overflow:hidden}
.sd-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.sd-video-fallback{text-align:center}

/* ============================================================ Generic entry / footer */
.sd-entry{max-width:760px;margin:0 auto;padding:60px var(--pad)}
.sd-entry-title{font-size:34px;margin:0 0 24px}
.sd-empty{text-align:center;padding:120px 0;color:var(--ink-3)}
.sd-footer{border-top:1px solid var(--line);background:var(--paper-2)}
.sd-footer-inner{max-width:var(--maxw);margin:0 auto;padding:30px var(--pad);display:flex;gap:18px;justify-content:space-between;align-items:center;color:var(--ink-3);font-size:13px}
.sd-copy{font-family:var(--sans);letter-spacing:.012em;color:var(--ink-2);font-variant-numeric:proportional-nums lining-nums}
.sd-cities{margin-left:16px;color:var(--ink-3)}
.sd-beian{color:var(--ink-3);font-variant-numeric:proportional-nums lining-nums;transition:color .2s}
.sd-beian:hover{color:var(--ink)}

/* ============================================================ Rich text（弹窗 / 页面共用） */
.sd-richtext{color:var(--ink-2);font-size:15.5px;line-height:1.95}
.sd-richtext>:first-child{margin-top:0}
.sd-richtext>:last-child{margin-bottom:0}
.sd-richtext p{margin:0 0 1.1em}
.sd-richtext h2,.sd-richtext h3,.sd-richtext h4{color:var(--ink);font-weight:600;letter-spacing:-.01em;margin:1.7em 0 .6em;line-height:1.4}
.sd-richtext h2{font-size:1.42em}
.sd-richtext h3{font-size:1.2em}
.sd-richtext img{border-radius:var(--radius);margin:.4em 0}
.sd-richtext figure{margin:1.3em 0}
.sd-richtext figcaption{margin-top:9px;text-align:center;color:var(--ink-3);font-size:13px}
.sd-richtext a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--ink-3);transition:text-decoration-color .2s}
.sd-richtext a:hover{text-decoration-color:var(--ink)}
.sd-richtext ul,.sd-richtext ol{margin:0 0 1.1em;padding-left:1.35em}
.sd-richtext li{margin:.3em 0}
.sd-richtext blockquote{margin:1.3em 0;padding-left:18px;border-left:2px solid var(--line);color:var(--ink-3)}

/* ============================================================ Page（关于 / 联系 独立页） */
.sd-page{max-width:760px;margin:0 auto;padding:clamp(48px,8vh,92px) var(--pad) 90px}
.sd-page-head{margin:0 0 28px}
.sd-page-title{font-size:clamp(28px,4vw,42px);font-weight:600;letter-spacing:-.02em}

/* ============================================================ Modal（顶部按钮弹窗） */
.sd-modal{position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;padding:24px}
.sd-modal[hidden]{display:none}
.sd-modal-backdrop{position:absolute;inset:0;background:rgba(11,11,12,.5);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);animation:sd-fade .28s var(--ease) both}
.sd-modal-panel{position:relative;z-index:1;width:min(720px,100%);max-height:88vh;overflow:auto;background:var(--paper-2);border-radius:14px;padding:clamp(44px,5.5vw,76px) clamp(36px,5vw,72px);box-shadow:0 40px 110px -28px rgba(0,0,0,.5);animation:sd-pop .42s var(--ease) both}
.sd-modal-close{position:absolute;top:22px;right:22px;width:38px;height:38px;border:0;border-radius:50%;background:transparent;cursor:pointer;transition:background .2s}
.sd-modal-close:hover{background:var(--line-2)}
.sd-modal-close::before,.sd-modal-close::after{content:"";position:absolute;top:50%;left:50%;width:15px;height:1.5px;background:var(--ink-2);transition:background .2s}
.sd-modal-close:hover::before,.sd-modal-close:hover::after{background:var(--ink)}
.sd-modal-close::before{transform:translate(-50%,-50%) rotate(45deg)}
.sd-modal-close::after{transform:translate(-50%,-50%) rotate(-45deg)}
.sd-modal-title{font-size:clamp(26px,3.4vw,38px);font-weight:600;letter-spacing:-.025em;line-height:1.2;margin:0 0 30px;padding-right:30px}
body.sd-modal-open{overflow:hidden}

/* ============================================================ Motion */
@keyframes sd-rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@keyframes sd-scroll{0%{opacity:0;transform:translateY(-4px)}40%{opacity:1}100%{opacity:0;transform:translateY(8px)}}
@keyframes sd-fade{from{opacity:0}to{opacity:1}}
@keyframes sd-pop{from{opacity:0;transform:translateY(14px) scale(.985)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:reduce){
    *{animation:none!important;scroll-behavior:auto!important}
    .sd-card-thumb img{filter:grayscale(0)}
}

/* ============================================================ Responsive */
@media(max-width:680px){
    :root{--pad:20px} /* 筛选条横向滑动（单行），底部预留沿用默认 84px */
    .sd-header-inner{height:58px}
    .sd-nav .sd-menu{gap:18px}
    .sd-hero{min-height:70vh}
    .sd-work-spec{gap:26px}
    .sd-footer-inner{flex-direction:column;gap:8px;text-align:center}
    .sd-cities{display:block;margin:4px 0 0}

    /* —— 移动端汉堡菜单 —— */
    .sd-burger{display:flex;flex-direction:column;justify-content:center;gap:5px;width:34px;height:34px;margin:0 -6px 0 0;padding:0;border:0;background:transparent;cursor:pointer}
    .sd-burger span{display:block;width:22px;height:1.5px;background:var(--ink);transition:transform .3s var(--ease),opacity .2s var(--ease)}
    .sd-header.is-menu-open .sd-burger span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
    .sd-header.is-menu-open .sd-burger span:nth-child(2){opacity:0}
    .sd-header.is-menu-open .sd-burger span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

    /* 收起的下拉面板 */
    .sd-header-right{position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;background:var(--paper-2);border-bottom:1px solid var(--line);box-shadow:0 18px 32px -20px rgba(0,0,0,.3);padding:4px 0}
    .sd-header.is-menu-open .sd-header-right{display:flex}
    .sd-actions{flex-direction:column;align-items:stretch;gap:0}
    .sd-action{font-size:15px;line-height:1.2;padding:15px var(--pad)}
    .sd-action:hover{opacity:1}
    .sd-lang{border-left:0;padding-left:var(--pad)}

    /* 菜单打开时整条 header 给实底（覆盖透明 overlay，保证深色字可读）*/
    .sd-header.is-menu-open{background:var(--paper-2);border-bottom-color:transparent}

    /* 分类筛选：窄屏不换行，改横向滑动 */
    .sd-filter{flex-wrap:nowrap;justify-content:flex-start;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
    .sd-filter::-webkit-scrollbar{display:none}
    .sd-filter button{flex:0 0 auto}
}
@media(max-width:420px){
    .sd-logo{font-size:19px}
    .sd-modal{padding:0;align-items:flex-end}
    .sd-modal-panel{max-height:92vh;border-radius:14px 14px 0 0;width:100%}
}