/*
Theme Name: Adman STEM
Theme URI: https://stem.meanuong.com/
Author: Adman STEM
Description: Theme cho nen tang giao duc STEM Adman — trang gioi thieu, cua hang kit va cac Studio mo phong (Cap 1/2/3), thu vien module, lap rap 3D.
Version: 1.1.0
Requires at least: 6.0
Tested up to: 7.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: adman-stem
Tags: education, stem, one-column, custom-menu, translation-ready
*/

/* ============================================================
   CSS chung cua trang gioi thieu + cua hang (front-page.php).
   CSS rieng cua tung Studio nam trong assets/css/.
   ============================================================ */

:root{
  --page:#f9f9f7; --surface:#fcfcfb; --ink:#0b0b0b; --ink2:#52514e; --muted:#898781;
  --grid:#e1e0d9; --hair:rgba(11,11,11,.10); --hair2:rgba(11,11,11,.06);
  --accent:#2a78d6; --accent-d:#1c5cab; --accent-t:rgba(42,120,214,.08);
  --good:#0ca30c; --good-text:#006300; --crit:#d03b3b; --warn:#eda100; --violet:#4a3aa7; --aqua:#1baf7a;
  --r:10px; --mono:ui-monospace,'Cascadia Code','Consolas',monospace;
  --shadow:0 1px 2px rgba(11,11,11,.05),0 1px 3px rgba(11,11,11,.04);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{background:var(--page);color:var(--ink);font-family:system-ui,-apple-system,'Segoe UI',sans-serif;
  min-height:100vh;font-size:15px;line-height:1.6}
button{font-family:inherit;cursor:pointer;border:none;background:none}
svg{display:block}
.ic{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
/* ===== topbar ===== */
#topbar{display:flex;align-items:center;gap:28px;padding:0 28px;height:60px;
  background:var(--surface);border-bottom:1px solid var(--hair);position:sticky;top:0;z-index:50}
#logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;letter-spacing:-.01em}
#logo .mark{width:28px;height:28px}
#logo span em{font-style:normal;color:var(--accent)}
nav{display:flex;gap:2px}
nav button{color:var(--ink2);padding:8px 14px;border-radius:8px;font-size:14px;font-weight:500}
nav button.on{background:var(--accent-t);color:var(--accent-d);font-weight:600}
nav button:hover{color:var(--ink)}
#topbar .cta{margin-left:auto;background:var(--accent);color:#fff;padding:9px 18px;
  border-radius:8px;font-weight:600;font-size:13.5px}
#topbar .cta:hover{background:var(--accent-d)}
.page{display:none;max-width:1200px;margin:0 auto;padding:0 28px 72px}
.page.on{display:block}
/* ===== home ===== */
.hero{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;padding:72px 0 48px}
.hero h1{font-size:40px;line-height:1.16;font-weight:700;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero p.sub{color:var(--ink2);font-size:16px;margin:18px 0 28px;max-width:52ch}
.hero .btns{display:flex;gap:10px}
.btn-pri{background:var(--accent);color:#fff;padding:12px 24px;border-radius:9px;font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:8px}
.btn-pri:hover{background:var(--accent-d)}
.btn-sec{background:var(--surface);color:var(--ink);padding:12px 24px;border-radius:9px;font-weight:500;
  font-size:14.5px;border:1px solid var(--hair);box-shadow:var(--shadow)}
.btn-sec:hover{border-color:var(--accent);color:var(--accent-d)}
.stats{display:flex;gap:0;margin-top:36px;border:1px solid var(--hair);border-radius:var(--r);
  background:var(--surface);box-shadow:var(--shadow);overflow:hidden}
.stat{padding:16px 22px;flex:1}
.stat+.stat{border-left:1px solid var(--hair2)}
.stat b{font-size:22px;font-weight:700;letter-spacing:-.01em}
.stat span{display:block;color:var(--muted);font-size:12px;margin-top:2px}
.hero-card{background:var(--surface);border:1px solid var(--hair);border-radius:16px;padding:22px;box-shadow:var(--shadow)}
.hero-card .cap{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;margin-top:12px}
.hero-card .cap b{color:var(--ink2);font-weight:600}
h2.sec{font-size:26px;font-weight:700;letter-spacing:-.015em;margin:56px 0 6px}
p.secsub{color:var(--ink2);margin-bottom:24px;font-size:15px}
.overline{font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.levels{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.lv{background:var(--surface);border:1px solid var(--hair);border-radius:var(--r);padding:24px;box-shadow:var(--shadow)}
.lv .lvic{width:38px;height:38px;border-radius:9px;display:grid;place-items:center;margin-bottom:16px}
.lv .lvic svg{width:20px;height:20px}
.lv h3{font-size:16.5px;font-weight:650;margin:8px 0 8px;letter-spacing:-.01em}
.lv p{color:var(--ink2);font-size:13.5px}
.lv ul{margin:14px 0 0;list-style:none}
.lv li{color:var(--ink2);font-size:13px;padding:3.5px 0;display:flex;gap:9px;align-items:baseline}
.lv li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--muted);flex:none;transform:translateY(-2px)}
.kits{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.kit{background:var(--surface);border:1px solid var(--hair);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.kit .thumb{height:140px;display:grid;place-items:center;border-bottom:1px solid var(--hair2);background:#f4f5f2}
.kit .thumb svg{width:96px;height:96px}
.kit .body{padding:20px}
.kit h3{font-size:15.5px;font-weight:650;letter-spacing:-.01em}
.kit .meta{color:var(--muted);font-size:12px;margin:4px 0 10px}
.kit p{color:var(--ink2);font-size:13px}
.kit .row{display:flex;justify-content:space-between;align-items:center;margin-top:16px;padding-top:14px;border-top:1px solid var(--hair2)}
.kit .price{font-weight:700;font-size:15px}
.kit .price small{color:var(--muted);font-weight:500;font-size:11px;display:block}
.kit .go{color:var(--accent-d);font-size:13px;font-weight:600;display:inline-flex;align-items:center;gap:5px}
.kit .go:hover{text-decoration:underline}
footer{border-top:1px solid var(--hair);margin-top:64px;padding:22px 0 0;color:var(--muted);font-size:12.5px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
/* ===== IDE layout ===== */
#ide-wrap{display:grid;grid-template-columns:232px 1fr 1fr;gap:16px;height:calc(100vh - 132px);min-height:580px;margin-top:20px}
.col{background:var(--surface);border:1px solid var(--hair);border-radius:var(--r);display:flex;
  flex-direction:column;overflow:hidden;box-shadow:var(--shadow)}
.col .hd{padding:12px 16px;border-bottom:1px solid var(--hair2);font-weight:600;font-size:12px;
  display:flex;align-items:center;gap:8px;color:var(--ink2);letter-spacing:.05em;text-transform:uppercase}
.col .bd{flex:1;overflow:auto;padding:14px}
#side .grp{margin-bottom:22px}
#side .grp h4{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.07em;margin-bottom:8px;font-weight:700}
.pick{display:flex;flex-direction:column;gap:4px}
.pick button{color:var(--ink2);text-align:left;padding:9px 11px;border-radius:8px;font-size:13.5px;
  font-weight:500;display:flex;gap:10px;align-items:center;border:1px solid transparent}
.pick button:hover{background:var(--accent-t)}
.pick button.on{border-color:var(--accent);background:var(--accent-t);color:var(--accent-d);font-weight:600}
.pick .ic{width:16px;height:16px;color:var(--muted)}
.pick button.on .ic{color:var(--accent-d)}
.lesson{border:1px solid var(--hair);border-radius:8px;padding:10px 12px;margin-bottom:8px;cursor:pointer;background:var(--surface)}
.lesson:hover{border-color:var(--accent)}
.lesson b{display:block;font-size:12.5px;font-weight:600;margin-bottom:2px}
.lesson span{color:var(--ink2);font-size:11.5px;line-height:1.5;display:block}
/* editor */
#edwrap{position:relative;flex:1;display:flex;flex-direction:column}
#code{flex:1;width:100%;background:var(--surface);color:var(--ink);border:none;outline:none;resize:none;
  font-family:var(--mono);font-size:13px;line-height:1.75;padding:16px;tab-size:2}
#blockmode{flex:1;overflow:auto;padding:16px;display:none}
.bm-cap{font-size:12px;color:var(--muted);margin-bottom:10px}
.palette{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:18px}
.palette button{padding:8px 13px;border-radius:8px;font-size:12.5px;font-weight:600;color:#fff;display:inline-flex;gap:7px;align-items:center}
.palette button:hover{filter:brightness(1.08)}
.b-act{background:var(--accent)}.b-wait{background:#b57d00}.b-loop{background:var(--violet)}.b-off{background:#6d6b66}
.prog{min-height:130px;border:1.5px dashed var(--grid);border-radius:var(--r);padding:12px;display:flex;flex-direction:column;gap:6px}
.step{display:flex;align-items:center;gap:10px;background:var(--page);border:1px solid var(--hair);
  border-radius:8px;padding:8px 12px;font-size:13px;font-weight:500}
.step .n{color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums;min-width:16px}
.step .x{margin-left:auto;color:var(--muted);font-size:15px;line-height:1;padding:2px 4px;border-radius:5px}
.step .x:hover{color:var(--crit);background:rgba(208,59,59,.08)}
.toolbar{display:flex;gap:8px;padding:11px 14px;border-top:1px solid var(--hair2);align-items:center;background:var(--surface)}
.toolbar .run{background:var(--accent);color:#fff;font-weight:600;padding:9px 20px;border-radius:8px;
  font-size:13.5px;display:inline-flex;align-items:center;gap:7px}
.toolbar .run:hover{background:var(--accent-d)}
.toolbar .stop{background:var(--surface);color:var(--crit);font-weight:600;padding:9px 14px;border-radius:8px;
  font-size:13px;border:1px solid var(--hair)}
.toolbar .stop:hover{border-color:var(--crit)}
.toolbar .ex{color:var(--muted);border:1px solid var(--hair);padding:8px 12px;border-radius:8px;font-size:12.5px;background:var(--surface)}
.toolbar .ex:hover{color:var(--ink2)}
#status{margin-left:auto;font-size:12.5px;color:var(--muted);display:flex;align-items:center;gap:7px}
#status .dot{width:7px;height:7px;border-radius:50%;background:var(--muted)}
/* sim */
#simbox{flex:1;display:grid;place-items:center;padding:12px;background:#f4f5f2;margin:14px;border-radius:8px;border:1px solid var(--hair2)}
#console{height:132px;border-top:1px solid var(--hair2);font-family:var(--mono);
  font-size:12px;padding:10px 14px;overflow:auto;color:var(--ink2);background:var(--surface)}
#console div{padding:1px 0}
#console .err{color:var(--crit)}
#console .info{color:var(--accent-d)}
#console .ok{color:var(--good-text)}
.fanblade{transform-origin:center;animation:spin 1.2s linear infinite;animation-play-state:paused}
@keyframes spin{to{transform:rotate(360deg)}}
/* circuits */
.circ{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.circ .c{background:var(--surface);border:1px solid var(--hair);border-radius:var(--r);padding:22px;box-shadow:var(--shadow)}
.circ h3{font-size:15.5px;font-weight:650;margin-bottom:6px;letter-spacing:-.01em}
.circ p{color:var(--ink2);font-size:13px;margin-bottom:14px}
.circ svg{width:100%;background:#f4f5f2;border-radius:8px;border:1px solid var(--hair2)}
@media(max-width:1000px){#ide-wrap{grid-template-columns:1fr;height:auto}.hero{grid-template-columns:1fr;padding-top:40px}
  .levels,.kits{grid-template-columns:1fr}.circ{grid-template-columns:1fr}.stats{flex-wrap:wrap}}

/* ===== index-only additions ===== */
.tb-cart{margin-left:auto;display:flex;align-items:center;gap:8px;color:var(--ink2);font-size:13.5px;
  font-weight:600;padding:8px 14px;border-radius:8px;border:1px solid var(--hair)}
.tb-cart:hover{border-color:var(--accent);color:var(--accent-d)}
.tb-cart #cartn{background:var(--accent);color:#fff;font-size:11px;font-weight:700;min-width:18px;
  height:18px;border-radius:9px;display:grid;place-items:center;padding:0 5px}
#topbar .cta{margin-left:0}
.kit .buy{background:var(--accent);color:#fff;font-weight:600;font-size:13px;padding:9px 16px;border-radius:8px}
.kit .buy:hover{background:var(--accent-d)}
.kit .lowstock{color:var(--warn);font-size:11.5px;font-weight:600}
.school-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.sc-card{background:var(--surface);border:1px solid var(--hair);border-radius:var(--r);padding:26px;
  box-shadow:var(--shadow);position:relative;display:flex;flex-direction:column}
.sc-card.hi{border-color:var(--accent);border-width:1.5px}
.sc-tag{position:absolute;top:-11px;left:22px;background:var(--accent);color:#fff;font-size:11px;
  font-weight:700;padding:3px 12px;border-radius:12px}
.sc-card h3{font-size:16px;font-weight:650}
.sc-price{font-size:24px;font-weight:700;letter-spacing:-.01em;margin:8px 0 14px}
.sc-card ul{list-style:none;margin:0 0 20px;flex:1}
.sc-card li{color:var(--ink2);font-size:13.5px;padding:5px 0 5px 24px;position:relative}
.sc-card li::before{content:"";position:absolute;left:2px;top:11px;width:12px;height:7px;
  border-left:2px solid var(--good);border-bottom:2px solid var(--good);transform:rotate(-45deg)}
.how{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:20px}
.how-s{background:var(--surface);border:1px solid var(--hair);border-radius:var(--r);padding:22px;box-shadow:var(--shadow)}
.how-s .hn{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;
  background:var(--accent-t);color:var(--accent-d);font-weight:700;font-size:14px;margin-bottom:12px}
.how-s b{display:block;font-size:15px;margin-bottom:6px}
.how-s p{color:var(--ink2);font-size:13px}
/* cart drawer */
#cartwrap{position:fixed;inset:0;background:rgba(11,11,11,.35);z-index:110;display:none}
#cartwrap.on{display:block}
#cart{position:absolute;right:0;top:0;bottom:0;width:min(400px,94vw);background:var(--surface);
  display:flex;flex-direction:column;box-shadow:-12px 0 34px rgba(11,11,11,.15)}
.c-hd{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--hair2)}
.c-hd b{font-size:16px;letter-spacing:-.01em}
.c-hd button{color:var(--muted);font-size:17px;padding:4px 8px;border-radius:6px}
.c-hd button:hover{color:var(--ink);background:var(--hair2)}
.c-items{flex:1;overflow:auto;padding:14px 22px}
.c-empty{color:var(--muted);font-size:13.5px;text-align:center;padding:40px 0}
.c-it{display:flex;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--hair2)}
.c-it .nm{flex:1}
.c-it .nm b{font-size:13.5px;font-weight:600;display:block}
.c-it .nm span{color:var(--muted);font-size:12px}
.c-qty{display:flex;align-items:center;gap:2px;border:1px solid var(--hair);border-radius:7px}
.c-qty button{padding:4px 9px;color:var(--ink2);font-size:14px}
.c-qty span{min-width:22px;text-align:center;font-size:13px;font-variant-numeric:tabular-nums}
.c-foot{border-top:1px solid var(--hair2);padding:16px 22px 20px}
.c-total{display:flex;justify-content:space-between;margin-bottom:14px;font-size:14px;color:var(--ink2)}
.c-total b{font-size:18px;color:var(--ink);letter-spacing:-.01em}
/* checkout */
#ckwrap,#leadwrap{position:fixed;inset:0;background:rgba(11,11,11,.4);z-index:120;display:none;place-items:center}
#ckwrap.on,#leadwrap.on{display:grid}
#ck,#lead{background:var(--surface);border-radius:14px;width:min(560px,94vw);max-height:90vh;overflow:auto;
  box-shadow:0 18px 50px rgba(11,11,11,.25)}
.ck-steps{display:flex;gap:6px;padding:14px 22px 0}
.ck-steps span{font-size:12px;font-weight:600;color:var(--muted);padding:6px 12px;border-radius:16px;background:var(--page)}
.ck-steps span.on{background:var(--accent-t);color:var(--accent-d)}
.ck-body{padding:18px 22px 24px}
.ck-pane{display:none}
.ck-pane.on{display:block}
.ck-pane label{display:block;font-size:12.5px;font-weight:600;color:var(--ink2);margin-bottom:14px}
.ck-pane input,.ck-pane textarea{display:block;width:100%;margin-top:6px;padding:10px 13px;border:1px solid var(--hair);
  border-radius:8px;font-size:14px;font-family:inherit;background:var(--page);color:var(--ink)}
.ck-pane input:focus,.ck-pane textarea:focus{outline:2px solid var(--accent);outline-offset:-1px;background:var(--surface)}
.ck-err{color:var(--crit);font-size:12.5px;margin-bottom:10px;min-height:16px}
.payopt{border:1.5px solid var(--hair);border-radius:10px;padding:14px 16px;margin-bottom:10px;cursor:pointer}
.payopt.on{border-color:var(--accent);background:var(--accent-t)}
.payopt b{display:block;font-size:14px;margin-bottom:2px}
.payopt span{color:var(--ink2);font-size:12.5px}
#qrbox{display:flex;gap:18px;align-items:flex-start;background:var(--page);border:1px solid var(--hair);
  border-radius:10px;padding:16px;margin-top:6px}
#qrimg{width:132px;height:132px;background:#fff;border:1px solid var(--hair);border-radius:8px;
  display:grid;place-items:center;flex:none}
#qrimg img,#qrimg canvas{width:120px;height:120px}
#qrimg .qrfb{font-size:10px;color:var(--muted);text-align:center;padding:8px}
.qrmeta{flex:1;font-size:12.5px}
.qrmeta>div{display:flex;justify-content:space-between;gap:10px;padding:4px 0;border-bottom:1px dashed var(--hair2)}
.qrmeta span{color:var(--muted)}
.qrmeta b{text-align:right;font-variant-numeric:tabular-nums}
.ck-done{text-align:center;padding:14px 6px}
.ck-done svg{margin:0 auto 12px}
.ck-done h3{font-size:18px;letter-spacing:-.01em;margin-bottom:4px}
.ck-done p{color:var(--ink2);font-size:13.5px;margin:4px 0}
.ordcode{font-family:var(--mono);font-size:22px;font-weight:700;letter-spacing:.04em;margin:10px 0;
  background:var(--page);border:1px dashed var(--grid);border-radius:8px;padding:10px;display:inline-block}
@media(max-width:900px){.school-grid,.how{grid-template-columns:1fr}}

/* ===== Khung trang do theme them (header.php / footer.php / page.php) ===== */
.adman-site-footer{max-width:1200px;margin:64px auto 0;padding:22px 28px 40px}
.adman-content{max-width:820px;margin:0 auto;padding:32px 28px 64px}
.adman-content h1{font-size:30px;letter-spacing:-.02em;margin-bottom:16px}
.adman-content h2{font-size:22px;letter-spacing:-.01em;margin:28px 0 10px}
.adman-content p{color:var(--ink2);line-height:1.7;margin-bottom:14px}
.adman-content a{color:var(--accent-d)}
.adman-content .meta{color:var(--muted);font-size:12.5px;margin-bottom:20px}
#logo{text-decoration:none;color:inherit}