/* site.css — www2.pcw.ac.th, styled after the old new.pcw.ac.th
   (WordPress Astra theme): Sarabun everywhere, deep plum menu, pink
   accents, pastel section bands. No JavaScript anywhere (CSP forbids it). */

:root {
  --plum: #55006a;
  --plum-active: #5d0352;
  --pink: #fb5fab;
  --pink-dark: #e34893;
  --band-pr: #f3c1fd;
  --band-letter: #fad8e9;
  --box: #fbecf3;
  --tile: #f6f6f6;
  --footer: #eeeeee;
  --text: #3a3a3a;
  --heading: #12101a;
  --muted: #6b6470;
  --bg: #fff;
  --surface: #fff;
  --line: #eee;
  --chip: #e7e7e7;
  --on-pink: #fff;
  --quote-a: #84c8f1;
  --quote-b: #cba8ef;
  --quote-ink: #20202a;
  --photo-bg: #e8edf3;
  --font: "Sarabun", "Noto Sans Thai", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { overflow-x: clip; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); font-size: 16px; line-height: 1.65; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--pink); }
h1, h2, h3 { color: var(--heading); font-family: var(--font); line-height: 1.3; margin: 0 0 .5em; }
:focus-visible { outline: 3px solid var(--pink); outline-offset: 2px; }

/* ---------- header ---------- */
.site-header { background: var(--bg); }
.header-inner {
  max-width: 1240px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 28px max(16px, env(safe-area-inset-left, 0px)) 28px max(16px, env(safe-area-inset-right, 0px));
  position: relative;
}
.brand { display: flex; align-items: center; gap: 14px; text-decoration: none; min-width: 0; }
.brand-logo { width: 120px; height: auto; flex: none; }
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand-name { font-size: 2.1rem; font-weight: 700; color: var(--heading); line-height: 1.2; }
.brand-sub { font-size: .95rem; color: var(--text); }

.nav > ul { display: flex; margin: 0; padding: 0; list-style: none; background: var(--plum); }
.nav li { position: relative; }
.nav > ul > li > a {
  display: flex; align-items: center; gap: 6px; padding: 0 16px; height: 80px;
  color: #fff; text-decoration: none; font-size: 1.05rem; white-space: nowrap;
}
.nav > ul > li.has-sub > a::after { content: ""; width: 6px; height: 6px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg) translateY(-2px); margin-left: 4px; }
.nav > ul > li:hover > a, .nav > ul > li:focus-within > a { background: var(--plum-active); }
.nav ul ul {
  position: absolute; top: 100%; left: 0; min-width: 240px; margin: 0; padding: 0; list-style: none;
  background: var(--surface); border-top: 3px solid var(--plum); box-shadow: 0 6px 18px rgba(0,0,0,.12);
  visibility: hidden; opacity: 0; transition: opacity .15s; z-index: 50;
}
.nav > ul > li:nth-last-child(-n+2) > ul { left: auto; right: 0; }
.nav li:hover > ul, .nav li:focus-within > ul { visibility: visible; opacity: 1; }
.nav ul ul a { display: block; padding: 10px 16px; color: var(--text); text-decoration: none; border-bottom: 1px solid var(--line); }
.nav ul ul a:hover { color: var(--pink); }

/* home: transparent header laid over the hero photo */
.is-home .site-header { position: absolute; left: 0; right: 0; top: 0; z-index: 20; background: transparent; }
.is-home .header-inner { padding-top: 22px; padding-bottom: 22px; }
.is-home .brand-logo { width: 78px; }
.is-home .brand-name { color: #fff; font-size: 1.7rem; text-shadow: 0 1px 3px rgba(0,0,0,.35); }
.is-home .brand-sub { color: #fff; font-size: .85rem; text-shadow: 0 1px 3px rgba(0,0,0,.35); }
.is-home .nav > ul { background: transparent; }
.is-home .nav > ul > li > a { height: 50px; font-size: .95rem; }
.is-home .nav > ul > li:first-child > a { background: var(--plum-active); }

/* mobile menu (pink round button like the old theme) */
.nav-mobile { display: none; }
.nav-mobile > summary {
  list-style: none; width: 44px; height: 44px; border-radius: 50%; background: var(--pink); cursor: pointer;
  display: grid; place-items: center;
}
.nav-mobile > summary::-webkit-details-marker { display: none; }
.nav-mobile > summary::before { content: ""; width: 18px; height: 2px; background: #fff; box-shadow: 0 -6px 0 #fff, 0 6px 0 #fff; }
.nav-mobile > ul { position: absolute; left: 12px; right: 12px; top: calc(100% - 8px); margin: 0; padding: 6px 0; list-style: none; background: var(--surface); box-shadow: 0 10px 24px rgba(0,0,0,.18); z-index: 60; }
.nav-mobile ul ul { list-style: none; padding-left: 16px; margin: 0; }
.nav-mobile a { display: block; padding: 10px 16px; color: var(--text); text-decoration: none; }
@media (max-width: 921px) {
  .nav { display: none; }
  .nav-mobile { display: block; }
  .brand-logo { width: 64px; }
  .brand-name { font-size: 1.35rem; }
  .brand-sub { font-size: .78rem; }
  .is-home .brand-logo { width: 54px; }
  .is-home .brand-name { font-size: 1.2rem; }
}

/* ---------- hero ---------- */
.hero {
  min-height: 655px; display: flex; align-items: center; justify-content: center; text-align: center;
  background-size: cover; background-position: center; position: relative;
  padding: 120px max(16px, env(safe-area-inset-left, 0px)) 60px max(16px, env(safe-area-inset-right, 0px));
}
.hero::before { content: ""; position: absolute; inset: 0; background: rgba(40, 0, 50, .25); }
.hero h1 { position: relative; color: #fff; font-size: clamp(3rem, 9vw, 7.5rem); font-weight: 700; margin: 0; text-shadow: 0 3px 12px rgba(0,0,0,.4); line-height: 1.15; }
@media (max-width: 921px) { .hero { min-height: 420px; } }

/* ---------- generic sections ---------- */
.sec { max-width: 1240px; margin: 0 auto; padding: 80px max(16px, env(safe-area-inset-left, 0px)) 60px max(16px, env(safe-area-inset-right, 0px)); }
.sec-title { text-align: center; font-size: 2.3rem; font-weight: 700; margin-bottom: 40px; }
.sec-title::after { content: ""; display: block; width: 90px; height: 3px; background: var(--pink); margin: 18px auto 0; }
.more { text-align: center; margin-top: 24px; }
.more a { color: var(--pink); text-decoration: none; font-weight: 600; }

/* SMART PCW cards */
.smart-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; max-width: 1080px; margin: 0 auto; }
.smart-card { display: flex; flex-direction: column; gap: 6px; text-decoration: none; }
.smart-card img { width: 100%; aspect-ratio: 1 / 1.3; object-fit: cover; }
.smart-card strong { color: var(--pink); font-size: 1.2rem; margin-top: 14px; }
.smart-card span { color: var(--pink); font-size: .95rem; }
@media (max-width: 760px) { .smart-cards { grid-template-columns: 1fr; gap: 48px; } }

/* director quote band */
.quote {
  background: linear-gradient(90deg, var(--quote-a), var(--quote-b)); text-align: center;
  padding: 80px max(16px, env(safe-area-inset-left, 0px)) 70px max(16px, env(safe-area-inset-right, 0px));
  display: flex; flex-direction: column; align-items: center; gap: 28px;
}
.quote p { max-width: 640px; margin: 0; font-size: 1.85rem; font-weight: 300; color: var(--quote-ink); line-height: 1.4; }
.quote img { width: 160px; height: 240px; object-fit: cover; }
.quote span { font-size: .85rem; color: var(--quote-ink); margin-top: -12px; }

/* slider (CSS scroll-snap; swipe/scroll, no script) */
.slider { max-width: 1240px; margin: 0 auto; padding: 50px max(16px, env(safe-area-inset-left, 0px)) 20px max(16px, env(safe-area-inset-right, 0px)); }
.slides { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: thin; }
.slide { flex: 0 0 100%; scroll-snap-align: center; }
.slide img { width: 100%; max-height: 620px; object-fit: contain; margin: 0 auto; }
.shadow-divider { height: 40px; max-width: 1180px; margin: 0 auto; background: radial-gradient(ellipse at top, rgba(0,0,0,.55), rgba(0,0,0,0) 70%); }

/* ข่าวประชาสัมพันธ์ band */
.sec-pr { max-width: none; background: var(--band-pr); }
.pr-grid { max-width: 1240px; margin: 0 auto; display: grid; grid-template-columns: repeat(6, 1fr); gap: 24px; align-items: start; }
.pr-card { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.pr-card img { width: 100%; aspect-ratio: 1 / 1.3; object-fit: cover; background: var(--surface); }
.pr-card h3 { font-size: .95rem; font-weight: 600; margin: 0; }
.pr-card h3 a { color: var(--heading); text-decoration: none; }
.btn-pink { align-self: flex-start; background: var(--pink); color: var(--on-pink); text-decoration: none; padding: 9px 26px; font-size: .9rem; }
.btn-pink:hover { background: var(--pink-dark); }
@media (max-width: 1100px) { .pr-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .pr-grid { grid-template-columns: repeat(2, 1fr); } }

/* procurement / admission */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; padding-top: 60px; }
.two-col > div { min-width: 0; }
.tile-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tile a { display: block; position: relative; height: 160px; overflow: hidden; text-decoration: none; background: var(--tile); }
.tile h3 { position: relative; z-index: 2; font-size: .92rem; font-weight: 700; margin: 0; padding: 16px 14px; color: var(--heading); }
.tile img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.plain .tile img { display: none; }
.overlay .tile a::after { content: ""; position: absolute; inset: 0; background: rgba(60, 60, 60, .55); z-index: 1; }
.overlay .tile h3 { color: #fff; }
@media (max-width: 921px) { .two-col { grid-template-columns: 1fr; } }
@media (max-width: 480px) { .tile-grid { grid-template-columns: repeat(2, 1fr); } }

/* newsletter band */
.sec-newsletter { max-width: none; background: var(--band-letter); padding-top: 50px; }
.small-title { max-width: 1240px; margin: 0 auto 16px; font-size: 1rem; font-weight: 600; color: var(--text); }
.letter-grid { max-width: 1240px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.letter { display: block; background: var(--tile); min-height: 260px; }
.letter img { width: 100%; }
@media (max-width: 760px) { .letter-grid { grid-template-columns: repeat(2, 1fr); } }

/* ---------- inner pages (Astra "boxed" content) ---------- */
.content-box {
  max-width: 1200px; margin: 50px auto 60px; background: var(--box);
  padding: 50px max(16px, env(safe-area-inset-left, 0px)) 50px max(16px, env(safe-area-inset-right, 0px));
}
@media (min-width: 922px) { .content-box { padding: 60px 105px; } }
.archive-title { font-size: 2.3rem; font-weight: 500; margin-bottom: 40px; }
.entry { padding: 40px 0; border-bottom: 1px solid #e7d3dd; }
.entry-title { font-size: 1.85rem; font-weight: 500; margin-bottom: 6px; }
.entry-title a { color: var(--heading); text-decoration: none; }
.entry-meta { color: var(--pink); font-size: .95rem; margin: 0 0 18px; }
.entry-cover { width: 100%; max-height: 520px; object-fit: cover; margin-bottom: 14px; }
.entry-excerpt { margin: 0 0 10px; }
.read-more { color: var(--pink); text-decoration: none; }
.single-cover { margin-bottom: 26px; }
.pagination { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 36px; }
.pagination a, .pagination span { padding: 6px 12px; background: var(--chip); color: var(--text); text-decoration: none; font-size: .9rem; }
.pagination .current { background: var(--surface); }

.prose { overflow-wrap: anywhere; }
.prose img { margin: 12px 0; }
.prose iframe { width: 100%; max-width: 100%; min-height: 420px; border: 0; }
.prose table { border-collapse: collapse; display: block; overflow-x: auto; max-width: 100%; }
.prose th, .prose td { border: 1px solid var(--line); padding: 6px 10px; }
.attachments a { color: var(--pink); }
.attachments .size { color: var(--muted); font-size: .85rem; }

/* ---------- footer ---------- */
.site-footer { background: var(--footer); }
.footer-inner {
  max-width: 1200px; margin: 0 auto; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px;
  padding: 24px max(16px, env(safe-area-inset-left, 0px)) 60px max(16px, env(safe-area-inset-right, 0px)); font-size: .95rem;
}
.footer-menu ul { display: flex; flex-wrap: wrap; gap: 4px 16px; list-style: none; margin: 0; padding: 0; }
.footer-menu ul ul { display: none; }
.footer-menu a, .footer-name { color: var(--text); text-decoration: none; }

/* ---------- "Contact us" widget (old Chaty plugin, rebuilt without JS) ---------- */
.contact-widget { position: fixed; z-index: 90; left: max(28px, env(safe-area-inset-left, 0px)); bottom: calc(28px + env(safe-area-inset-bottom, 0px)); }
.contact-widget > summary { list-style: none; display: flex; align-items: center; gap: 12px; cursor: pointer; }
.contact-widget > summary::-webkit-details-marker { display: none; }
.contact-icon { width: 54px; height: 54px; border-radius: 50%; background: #a886cd; box-shadow: 0 3px 10px rgba(0,0,0,.2); position: relative; }
.contact-icon::before { content: ""; position: absolute; left: 15px; top: 17px; width: 24px; height: 18px; border-radius: 4px; background: #fff; }
.contact-icon::after { content: ""; position: absolute; left: 20px; top: 23px; width: 14px; height: 2px; background: #a886cd; box-shadow: 0 5px 0 #a886cd; }
.contact-label { background: var(--surface); color: var(--text); padding: 2px 10px; border-radius: 6px; box-shadow: 0 1px 6px rgba(0,0,0,.15); font-size: .95rem; }
.contact-widget ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; position: absolute; bottom: 66px; left: 0; }
.contact-widget li a { display: block; white-space: nowrap; color: #fff; text-decoration: none; padding: 8px 14px; border-radius: 22px; font-size: .9rem; box-shadow: 0 2px 8px rgba(0,0,0,.2); }
.ch-phone { background: #03c578; }
.ch-messenger { background: #1e88e5; }
.ch-email { background: #ff485f; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }

.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:8px;margin:16px 0}
.gallery img{width:100%;height:160px;object-fit:cover;border-radius:6px;display:block}

.staff-group{margin:28px 0 12px;font-size:1.25rem}
.staff-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:20px;margin:16px 0}
.staff-card{text-align:center}
.staff-card img,.staff-nophoto{width:150px;height:180px;object-fit:cover;border-radius:8px;display:block;margin:0 auto 8px;background:var(--photo-bg)}
.staff-name{font-weight:600;margin:0}
.staff-title{margin:2px 0 0;font-size:.9rem;color:var(--muted)}
/* school logo standing in for a missing news cover */
img.cover-logo{object-fit:contain!important;background:var(--box);padding:12%;box-sizing:border-box}
.entry-cover.cover-logo{max-height:260px}
/* light/dark switch (no JS: plain links that set a cookie) */
.mode-switch{position:fixed;z-index:90;right:max(16px,env(safe-area-inset-right,0px));bottom:calc(28px + env(safe-area-inset-bottom,0px));display:flex;gap:2px;padding:3px;border-radius:22px;background:var(--surface);box-shadow:0 2px 10px rgba(0,0,0,.2)}
.mode-switch a{padding:4px 10px;border-radius:18px;font-size:.8rem;color:var(--text);text-decoration:none;white-space:nowrap}
.mode-switch a[aria-current]{background:var(--pink);color:var(--on-pink)}
/* inline PDF viewer on news posts */
.pdf{margin:24px 0}
.pdf-embed{width:100%;height:80vh;min-height:420px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}
.pdf figcaption{margin-top:6px;font-size:.9rem}
/* PCW-AI chat widget (static/chat.js) */
.chat-widget{position:fixed;z-index:95;right:max(16px,env(safe-area-inset-right,0px));bottom:calc(76px + env(safe-area-inset-bottom,0px))}
.chat-widget>summary{list-style:none;cursor:pointer;background:var(--pink);color:var(--on-pink);padding:10px 18px;border-radius:24px;box-shadow:0 3px 12px rgba(0,0,0,.25);font-weight:600;margin-left:auto;width:max-content}
.chat-widget>summary::-webkit-details-marker{display:none}
.chat-panel{position:absolute;right:0;bottom:52px;width:min(360px,calc(100vw - 32px));height:min(480px,calc(100vh - 160px));display:flex;flex-direction:column;background:var(--surface);color:var(--text);border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.3);overflow:hidden}
.chat-head{background:var(--plum);color:#fff;padding:10px 14px;font-weight:600}
.chat-head small{display:block;font-weight:400;font-size:.72rem;opacity:.85}
.chat-log{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:8px}
.chat-msg{max-width:85%;padding:8px 12px;border-radius:12px;white-space:pre-wrap;word-break:break-word;font-size:.92rem;line-height:1.5}
.chat-msg.ai{background:var(--box);align-self:flex-start}
.chat-msg.me{background:var(--pink);color:var(--on-pink);align-self:flex-end}
.chat-msg.wait{opacity:.6}
.chat-form{display:flex;gap:6px;padding:8px;border-top:1px solid var(--line)}
.chat-input{flex:1;min-width:0;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--text);font:inherit}
.chat-send{padding:8px 14px;border:0;border-radius:8px;background:var(--pink);color:var(--on-pink);font:inherit;cursor:pointer}
.chat-send:disabled{opacity:.5}
.chat-head{position:relative;padding-right:84px}
.chat-head small a{color:#fff;text-decoration:underline}
.chat-new{position:absolute;top:10px;right:10px;border:1px solid rgba(255,255,255,.6);background:transparent;color:#fff;border-radius:14px;padding:2px 10px;font:inherit;font-size:.75rem;cursor:pointer}
.chat-msg.staff{background:var(--band-pr);align-self:flex-start;border-left:3px solid var(--pink)}
.chat-msg.staff::before{content:attr(data-who);display:block;font-size:.72rem;font-weight:600;color:var(--pink-dark)}
.chat-notice{padding:6px 12px;font-size:.8rem;background:var(--box);color:var(--muted);border-top:1px solid var(--line)}
.news-stats{display:flex;flex-wrap:wrap;gap:6px 16px;margin:4px 0 16px;font-size:.9rem;color:#666}