/* ===== เว็บไซต์โรงเรียน — โทนม่วงพาสเทล ขาว ===== */
:root{
  --violet-800:#4A2F86;   /* หัวเรื่อง/ลิงก์ (ตัดกับพื้นขาวชัด) */
  --violet-600:#6D4FBF;   /* ปุ่มหลัก */
  --violet-400:#A58BE6;
  --lilac-200:#DED2F7;
  --lilac-100:#EEE7FC;
  --lilac-50:#F8F5FE;
  --white:#FFFFFF;
  --ink:#2E2645;
  --muted:#6B6383;
  --butter:#FFEDB3;       /* ป้ายปักหมุด */
  --line:#E6DEF6;
  --r-lg:28px; --r-md:16px; --r-sm:10px;
  --shadow:0 18px 40px -24px rgba(74,47,134,.35);
  --head:'Mitr', 'Sarabun', sans-serif;
  --body:'Sarabun', system-ui, sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--body);font-size:17px;line-height:1.7;color:var(--ink);background:var(--white)}
img{max-width:100%;height:auto;display:block}
a{color:var(--violet-800);text-underline-offset:3px}
h1,h2,h3,h4{font-family:var(--head);font-weight:500;line-height:1.3;margin:0 0 .5em;color:var(--violet-800)}
h1{font-size:clamp(2rem,4.5vw,3.4rem)} h2{font-size:clamp(1.5rem,2.6vw,2rem)} h3{font-size:1.25rem}
p{margin:0 0 1em}
:focus-visible{outline:3px solid var(--violet-400);outline-offset:2px;border-radius:6px}
.wrap{width:min(1180px,100% - 40px);margin-inline:auto}
.skip{position:absolute;left:-999px;top:8px;background:var(--violet-800);color:#fff;padding:8px 14px;border-radius:8px;z-index:99}
.skip:focus{left:8px}
.muted{color:var(--muted)}

/* ---------- แถบประกาศ / หัวเว็บ ---------- */
.announce{background:var(--violet-800);color:#fff;font-size:.92rem;padding:7px 0}
.announce i{color:var(--butter);margin-right:6px}
.site-head{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.head-row{display:flex;align-items:center;gap:20px;min-height:76px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;margin-right:auto}
.brand img{width:52px;height:52px;object-fit:contain}
.brand-mark{width:50px;height:50px;border-radius:50% 50% 14px 14px;background:var(--lilac-100);color:var(--violet-800);display:grid;place-items:center;font:500 1.5rem var(--head)}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text b{font:500 1.15rem var(--head);color:var(--violet-800)}
.brand-text small{color:var(--muted);font-size:.85rem}
.nav{display:flex;align-items:center;gap:2px}
.nav > a,.dd > button{font:400 1rem var(--head);color:var(--ink);text-decoration:none;padding:9px 13px;border-radius:999px;background:none;border:0;cursor:pointer}
.nav > a:hover,.dd > button:hover,.nav .on{background:var(--lilac-100);color:var(--violet-800)}
.nav .nav-cta{background:var(--violet-600);color:#fff;margin-left:6px}
.nav .nav-cta:hover,.nav .nav-cta.on{background:var(--violet-800);color:#fff}
.dd{position:relative}
.dd i{font-size:.7rem}
.dd-menu{display:none;position:absolute;top:calc(100% + 6px);left:0;min-width:230px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow);padding:8px}
.dd.open .dd-menu{display:block}
.dd-menu a{display:block;padding:9px 12px;border-radius:var(--r-sm);text-decoration:none;color:var(--ink)}
.dd-menu a:hover{background:var(--lilac-50);color:var(--violet-800)}
.nav-toggle{display:none;background:var(--lilac-100);border:0;width:46px;height:46px;border-radius:14px;font-size:1.5rem;color:var(--violet-800);cursor:pointer}

/* ---------- ปุ่ม ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font:400 1rem var(--head);padding:12px 22px;border-radius:999px;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:background .15s}
.btn-primary{background:var(--violet-600);color:#fff}
.btn-primary:hover{background:var(--violet-800)}
.btn-ghost{border-color:var(--lilac-200);color:var(--violet-800);background:#fff}
.btn-ghost:hover{background:var(--lilac-50)}

/* ---------- HERO: ซุ้มประตูโค้ง ---------- */
.hero{background:linear-gradient(180deg,var(--lilac-50),var(--white) 85%);padding:56px 0 40px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero-kicker{display:inline-block;background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 14px;font-size:.92rem;color:var(--muted);margin-bottom:18px}
.hero h1{font-weight:600;letter-spacing:-.01em;margin-bottom:.25em}
.hero-motto{font:300 clamp(1.2rem,2.2vw,1.6rem) var(--head);color:var(--violet-600);margin-bottom:.8em}
.hero-text{max-width:34em;color:var(--muted);font-size:1.08rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.arch-slider{position:relative;aspect-ratio:4/4.6;border-radius:999px 999px var(--r-lg) var(--r-lg);overflow:hidden;background:var(--lilac-100);box-shadow:0 0 0 12px #fff,0 0 0 13px var(--line),var(--shadow)}
.arch-slider .slide{position:absolute;inset:0;opacity:0;transition:opacity .9s ease}
.arch-slider .slide.on{opacity:1}
.arch-slider img{width:100%;height:100%;object-fit:cover}
.slide-cap{position:absolute;left:0;right:0;bottom:0;padding:60px 28px 26px;background:linear-gradient(transparent,rgba(46,38,69,.75));color:#fff}
.slide-cap b{display:block;font:500 1.2rem var(--head)}
.slide-cap a{color:#fff}
.dots{position:absolute;right:22px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:8px;z-index:2}
.dots button{width:10px;height:10px;border-radius:50%;border:2px solid #fff;background:transparent;padding:0;cursor:pointer}
.dots button.on{background:#fff}
.arch-empty{display:grid;place-items:center;height:100%;font:500 7rem var(--head);color:var(--lilac-200)}

/* ตัวเลขโรงเรียน */
.facts{display:flex;flex-wrap:wrap;gap:10px 34px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
.facts div{font-size:.95rem;color:var(--muted)}
.facts b{font:500 1.5rem var(--head);color:var(--violet-800);margin-right:6px}

/* ---------- ส่วนเนื้อหา ---------- */
.section{padding:72px 0}
.section.tint{background:var(--lilac-50)}
.sec-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:28px;flex-wrap:wrap}
.sec-head h2{margin:0}
.sec-head a{font-family:var(--head);text-decoration:none}

/* ประกาศปักหมุด */
.pins{display:grid;gap:10px}
.pin{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:14px 18px;text-decoration:none;color:var(--ink)}
.pin:hover{border-color:var(--violet-400)}
.pin .tag{flex:none}
.pin time{margin-left:auto;color:var(--muted);font-size:.9rem;white-space:nowrap}

.tag{display:inline-block;font-size:.8rem;padding:2px 10px;border-radius:999px;background:var(--lilac-100);color:var(--violet-800);font-family:var(--head)}
.tag.pinned{background:var(--butter);color:#6A4B00}

/* สารจากผู้อำนวยการ */
.director{display:grid;grid-template-columns:260px 1fr;gap:44px;align-items:center}
.director-photo{aspect-ratio:3/4;border-radius:140px 140px var(--r-md) var(--r-md);overflow:hidden;background:var(--lilac-100)}
.director-photo img{width:100%;height:100%;object-fit:cover}
.director blockquote{margin:0;font:300 clamp(1.15rem,2vw,1.45rem)/1.7 var(--head);color:var(--ink);max-width:36em}
.director cite{display:block;margin-top:18px;font-style:normal;color:var(--muted)}
.director cite b{color:var(--violet-800);font-family:var(--head);font-weight:500}

/* ข่าว: ข่าวเด่น 1 + รายการ */
.news-layout{display:grid;grid-template-columns:1.3fr 1fr;gap:32px}
.news-feature{text-decoration:none;color:var(--ink);display:block}
.news-feature .thumb{aspect-ratio:16/10;border-radius:var(--r-lg);overflow:hidden;background:var(--lilac-100);margin-bottom:16px}
.news-feature .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.news-feature:hover .thumb img{transform:scale(1.03)}
.news-feature h3{font-size:1.5rem;margin:8px 0}
.news-list{display:flex;flex-direction:column}
.news-row{display:grid;grid-template-columns:110px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink)}
.news-row:first-child{padding-top:0}
.news-row .thumb{aspect-ratio:1;border-radius:var(--r-md);overflow:hidden;background:var(--lilac-100)}
.news-row .thumb img{width:100%;height:100%;object-fit:cover}
.news-row h3{font-size:1.05rem;margin:4px 0;color:var(--ink)}
.news-row:hover h3{color:var(--violet-800)}
.meta{font-size:.88rem;color:var(--muted)}
.noimg{display:grid;place-items:center;height:100%;color:var(--violet-400);font-size:2rem}

/* กริดข่าวทั้งหมด */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:28px}
.post{text-decoration:none;color:var(--ink)}
.post .thumb{aspect-ratio:16/10;border-radius:var(--r-md);overflow:hidden;background:var(--lilac-100);margin-bottom:12px}
.post .thumb img{width:100%;height:100%;object-fit:cover}
.post h3{font-size:1.1rem;margin:6px 0;color:var(--ink)}
.post:hover h3{color:var(--violet-800)}

/* แกลเลอรี */
.albums{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:24px}
.album{text-decoration:none;color:var(--ink)}
.album .cover{position:relative;aspect-ratio:4/3;border-radius:var(--r-md);overflow:hidden;background:var(--lilac-100)}
.album .cover img{width:100%;height:100%;object-fit:cover}
.album .count{position:absolute;right:10px;bottom:10px;background:rgba(255,255,255,.92);border-radius:999px;padding:2px 10px;font-size:.82rem;color:var(--violet-800)}
.album h3{font-size:1.05rem;margin:10px 0 2px;color:var(--ink)}
.photos{columns:4 220px;column-gap:14px}
.photos a{display:block;margin-bottom:14px;border-radius:var(--r-sm);overflow:hidden;break-inside:avoid}
dialog#lightbox{border:0;padding:0;background:transparent;max-width:min(1100px,94vw);max-height:92vh}
dialog#lightbox::backdrop{background:rgba(30,22,50,.88)}
dialog#lightbox img{max-height:82vh;width:auto;margin:auto;border-radius:var(--r-sm)}
dialog#lightbox figcaption{color:#fff;text-align:center;padding:10px}
.lb-btn{position:fixed;top:50%;transform:translateY(-50%);background:rgba(255,255,255,.15);color:#fff;border:0;width:48px;height:48px;border-radius:50%;font-size:1.4rem;cursor:pointer}
.lb-prev{left:16px}.lb-next{right:16px}.lb-close{top:28px;right:16px;transform:none}

/* บุคลากร */
.staff-exec{display:flex;justify-content:center;flex-wrap:wrap;gap:30px;margin-bottom:48px}
.staff-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:30px 22px}
.person{text-align:center}
.person .face{aspect-ratio:3/4;border-radius:120px 120px var(--r-md) var(--r-md);overflow:hidden;background:var(--lilac-100);margin-bottom:12px}
.person .face img{width:100%;height:100%;object-fit:cover}
.staff-exec .person{width:220px}
.person b{display:block;font:500 1.02rem var(--head);color:var(--ink)}
.person span{display:block;font-size:.9rem;color:var(--muted)}
.dept-title{font-size:1.2rem;margin:44px 0 18px;padding-bottom:8px;border-bottom:2px solid var(--lilac-200)}

/* หน้าเนื้อหา */
.page-hero{background:var(--lilac-50);padding:44px 0 36px;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(1.7rem,3.4vw,2.5rem);margin:0}
.crumbs{font-size:.9rem;color:var(--muted);margin-bottom:8px}
.crumbs a{color:var(--muted)}
.content-wrap{display:grid;grid-template-columns:1fr 300px;gap:48px}
.prose{max-width:46em}
.prose img{border-radius:var(--r-md);margin:1em 0}
.prose h2,.prose h3{margin-top:1.4em}
.prose blockquote{border-left:4px solid var(--violet-400);margin:1em 0;padding:.2em 1em;color:var(--muted)}
.prose table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}
.prose td,.prose th{border:1px solid var(--line);padding:8px 10px}
.side-box{background:var(--lilac-50);border-radius:var(--r-md);padding:22px;margin-bottom:20px}
.side-box h3{font-size:1.05rem}
.side-box a{display:block;padding:7px 0;text-decoration:none;border-bottom:1px dashed var(--line);color:var(--ink)}
.side-box a:hover{color:var(--violet-800)}
.cover-img{border-radius:var(--r-lg);margin-bottom:28px;width:100%}

/* ตัวกรอง */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.filters a{padding:7px 16px;border-radius:999px;border:1px solid var(--line);text-decoration:none;font-family:var(--head);font-size:.95rem;color:var(--ink)}
.filters a.on,.filters a:hover{background:var(--violet-600);border-color:var(--violet-600);color:#fff}
.search{display:flex;gap:8px;margin-left:auto}

/* ตารางดาวน์โหลด */
.dl-list{border-top:1px solid var(--line)}
.dl{display:flex;align-items:center;gap:16px;padding:16px 4px;border-bottom:1px solid var(--line)}
.dl .ico{width:46px;height:46px;border-radius:12px;background:var(--lilac-100);color:var(--violet-800);display:grid;place-items:center;font-size:1.3rem;flex:none}
.dl .info{flex:1;min-width:0}
.dl .info b{display:block;font-weight:600}

/* ฟอร์ม */
.form{display:grid;gap:16px}
.form .two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{display:grid;gap:6px;font-family:var(--head);font-size:.95rem}
input,textarea,select{font:inherit;font-family:var(--body);padding:12px 14px;border:1.5px solid var(--line);border-radius:var(--r-sm);background:#fff;color:var(--ink);width:100%}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--violet-400);box-shadow:0 0 0 4px var(--lilac-100)}
.alert{padding:14px 18px;border-radius:var(--r-sm);margin-bottom:18px}
.alert.success{background:#E7F7EE;color:#1E6B42}
.alert.error{background:#FDECEE;color:#9B2335}
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:48px}
.contact-item{display:flex;gap:14px;margin-bottom:18px}
.contact-item i{width:42px;height:42px;border-radius:12px;background:var(--lilac-100);color:var(--violet-800);display:grid;place-items:center;flex:none}
.map{border-radius:var(--r-md);overflow:hidden;margin-top:20px}
.map iframe{width:100%;height:300px;border:0;display:block}
.hp{position:absolute;left:-9999px}

/* แบ่งหน้า */
.pager{display:flex;gap:6px;justify-content:center;margin-top:40px;flex-wrap:wrap}
.pager a,.pager span{min-width:40px;height:40px;display:grid;place-items:center;border-radius:12px;border:1px solid var(--line);text-decoration:none;font-family:var(--head)}
.pager .current{background:var(--violet-600);color:#fff;border-color:var(--violet-600)}
.empty{text-align:center;padding:60px 20px;color:var(--muted)}

/* ลิงก์หน่วยงาน */
.links-row{display:flex;flex-wrap:wrap;gap:12px}
.links-row a{padding:12px 20px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;text-decoration:none;font-family:var(--head)}
.links-row a:hover{border-color:var(--violet-400)}

/* ท้ายเว็บ */
.site-foot{background:#3A2768;color:#E9E2FA;padding:56px 0 0;margin-top:0}
.site-foot a{color:#fff}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.foot-name{font:500 1.35rem var(--head);color:#fff}
.foot-h{font:500 1rem var(--head);color:var(--lilac-200)}
.site-foot p{margin:0 0 .5em}
.foot-bottom{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.15);margin-top:40px;padding:18px 0;font-size:.9rem;color:#C9BEE8}
.foot-bottom a{color:#C9BEE8}

/* ---------- มือถือ ---------- */
@media (max-width:980px){
  .nav-toggle{display:grid;place-items:center}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;flex-direction:column;align-items:stretch;padding:12px 20px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);max-height:calc(100vh - 80px);overflow:auto}
  .nav.open{display:flex}
  .nav > a,.dd > button{width:100%;text-align:left;border-radius:var(--r-sm)}
  .nav .nav-cta{margin:8px 0 0;text-align:center}
  .dd-menu{position:static;box-shadow:none;border:0;padding:0 0 0 14px}
  .hero-grid,.news-layout,.director,.content-wrap,.contact-grid,.foot-grid{grid-template-columns:1fr}
  .hero-grid{gap:36px}
  .arch-slider{max-width:440px;width:100%;margin:0 auto}
  .director{text-align:center}.director-photo{max-width:220px;margin:0 auto}.director blockquote{margin:0 auto}
}
@media (max-width:560px){
  body{font-size:16px}
  .section{padding:52px 0}
  .form .two{grid-template-columns:1fr}
  .news-row{grid-template-columns:84px 1fr}
  .pin{flex-wrap:wrap}.pin time{margin-left:0}
  .brand-text small{display:none}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media (max-width:560px){.arch-slider{box-shadow:0 0 0 6px #fff,0 0 0 7px var(--line),var(--shadow);width:calc(100% - 14px)}}