/*
Theme Name: Giá Vàng
Theme URI: https://giavang.biz
Author: giavang.biz
Author URI: https://giavang.biz
Description: Theme giá vàng hiện đại (vàng/đen), hỗ trợ chế độ sáng/tối. Hiển thị bảng giá vàng SJC/PNJ/DOJI, biểu đồ, giá vàng thế giới, tỷ giá và tin tức.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
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: giavang
Tags: gold, finance, dark-mode, news, responsive
*/

/* ============ Base & Tokens ============ */
:root{
  --gold:#d4af37;
  --gold-light:#f5d97a;
  --gold-deep:#b8932f;
  --ink:#0e0f13;
  --ink-2:#16181f;
  --ink-3:#1e212b;
  --line:#2a2e3a;
  --text:#e9eaee;
  --muted:#9aa0ad;
  --up:#22c55e;
  --down:#ef4444;
  --radius:16px;
  --radius-sm:10px;
  --container:1200px;
  --shadow:0 18px 50px rgba(0,0,0,.45);
  --bar-bg:#0a0b0e;
  --header-bg:rgba(14,15,19,.85);
  --footer-bg:#0a0b0e;
  --hero-title-1:#fff;
  --news-img-2:#272b38;
  --chart-grid:rgba(255,255,255,.05);
  --chart-grid-x:rgba(255,255,255,.04);
}

/* ============ Light theme ============ */
:root[data-theme="light"]{
  --ink:#f4f6fa;
  --ink-2:#ffffff;
  --ink-3:#eceff5;
  --line:#e2e6ee;
  --text:#171a21;
  --muted:#5c6474;
  --shadow:0 18px 50px rgba(20,30,60,.10);
  --bar-bg:#ffffff;
  --header-bg:rgba(255,255,255,.85);
  --footer-bg:#f4f6fa;
  --hero-title-1:#1a1d24;
  --news-img-2:#dfe4ee;
  --chart-grid:rgba(0,0,0,.07);
  --chart-grid-x:rgba(0,0,0,.05);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Be Vietnam Pro',system-ui,sans-serif;
  background:var(--ink);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  transition:background-color .3s ease,color .3s ease;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.num{text-align:right}

/* ============ Topbar ============ */
.topbar{background:var(--bar-bg);border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.topbar__inner{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar__links a:hover{color:var(--gold)}
.topbar__sep{margin:0 8px;opacity:.4}

/* ============ Header ============ */
.header{
  position:sticky;top:0;z-index:50;
  background:var(--header-bg);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header__inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:12px}
.logo img{max-height:48px;width:auto}
.logo__mark{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;
  font-weight:800;font-size:18px;color:#1a1408;
  background:linear-gradient(135deg,var(--gold-light),var(--gold));
  box-shadow:0 6px 18px rgba(212,175,55,.35);
}
.logo__text{font-weight:800;font-size:20px;letter-spacing:.5px;line-height:1}
.logo__accent{color:var(--gold)}
.logo__text small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:2px;margin-top:3px}

.nav{display:flex;gap:6px;list-style:none}
.nav__link,.nav a{
  padding:10px 16px;border-radius:999px;font-weight:500;font-size:15px;color:var(--muted);
  transition:.2s;display:inline-block;
}
.nav__link:hover,.nav a:hover{color:var(--text);background:var(--ink-3)}
.nav__link.active,.nav .current-menu-item>a{color:var(--gold)}

.header__actions{display:flex;align-items:center;gap:10px}
.theme-toggle{
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:var(--ink-3);color:var(--text);
  cursor:pointer;font-size:18px;line-height:1;display:grid;place-items:center;
  transition:border-color .2s,color .2s,transform .2s;
}
.theme-toggle:hover{border-color:var(--gold);color:var(--gold);transform:translateY(-1px)}
.theme-toggle:active{transform:scale(.94)}

.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.3s}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(1100px 420px at 85% -10%,rgba(212,175,55,.18),transparent 60%),
    radial-gradient(800px 400px at 0% 0%,rgba(212,175,55,.08),transparent 55%),
    var(--ink);
  padding:64px 0 56px;
  border-bottom:1px solid var(--line);
}
.hero__inner{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center}
.hero__badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--gold);
  background:rgba(212,175,55,.1);border:1px solid rgba(212,175,55,.3);
  padding:6px 14px;border-radius:999px;
}
.hero__badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 0 rgba(212,175,55,.7);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(212,175,55,.6)}70%{box-shadow:0 0 0 9px rgba(212,175,55,0)}100%{box-shadow:0 0 0 0 rgba(212,175,55,0)}}
.hero__title{
  font-size:clamp(34px,5vw,54px);font-weight:800;line-height:1.1;margin:18px 0 14px;
  background:linear-gradient(120deg,var(--hero-title-1) 20%,var(--gold-light) 60%,var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__sub{color:var(--muted);font-size:17px;max-width:520px}
.hero__updated{margin-top:20px;font-size:14px;color:var(--muted)}
.hero__updated strong{color:var(--gold)}

.hero__cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.price-card{
  background:linear-gradient(160deg,var(--ink-2),var(--ink-3));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;position:relative;overflow:hidden;
  transition:transform .25s,border-color .25s;
}
.price-card:hover{transform:translateY(-4px);border-color:rgba(212,175,55,.45)}
.price-card::after{content:"";position:absolute;inset:0 0 auto auto;width:90px;height:90px;background:radial-gradient(circle at top right,rgba(212,175,55,.22),transparent 70%)}
.price-card__name{font-size:13px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.5px}
.price-card__price{font-size:26px;font-weight:800;margin:8px 0 4px}
.price-card__sub{font-size:13px;color:var(--muted)}
.price-card__chg{display:inline-flex;align-items:center;gap:4px;font-size:13px;font-weight:600;margin-top:10px;padding:3px 9px;border-radius:999px}
.chg-up{color:var(--up);background:rgba(34,197,94,.12)}
.chg-down{color:var(--down);background:rgba(239,68,68,.12)}

/* ============ Sections ============ */
.section{padding:64px 0}
.section--alt{background:var(--ink-2)}
.section__head{margin-bottom:28px}
.section__head--row{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap}
.section__title{font-size:clamp(24px,3vw,32px);font-weight:800}
.section__title::after{content:"";display:block;width:54px;height:4px;border-radius:4px;margin-top:12px;background:linear-gradient(90deg,var(--gold),transparent)}
.section__desc{color:var(--muted);margin-top:10px;font-size:15px}

/* ============ Table ============ */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--ink-2)}
.price-table{width:100%;border-collapse:collapse;min-width:560px}
.price-table th,.price-table td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line)}
.price-table thead th{
  font-size:13px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);
  background:var(--ink-3);position:sticky;top:0;
}
.price-table tbody tr{transition:background .15s}
.price-table tbody tr:hover{background:rgba(212,175,55,.05)}
.price-table tbody tr:last-child td{border-bottom:0}
.brand{display:flex;align-items:center;gap:12px;font-weight:700}
.brand__logo{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:13px;color:#1a1408;background:linear-gradient(135deg,var(--gold-light),var(--gold-deep))}
.cell-type{color:var(--muted);font-size:14px}
.cell-num{font-weight:700;font-variant-numeric:tabular-nums}
.chg{font-weight:700;font-variant-numeric:tabular-nums}
.chg--up{color:var(--up)}
.chg--down{color:var(--down)}
.chg--flat{color:var(--muted)}
.price-table--compact th,.price-table--compact td{padding:13px 16px}

/* ============ Chart ============ */
.chart-card{background:var(--ink-2);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.chart-card__head{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;margin-bottom:18px}
.chart-legend{display:flex;gap:18px}
.chart-legend__item{display:flex;align-items:center;gap:7px;font-size:14px;color:var(--muted)}
.dot{width:11px;height:11px;border-radius:50%}
.dot--sell{background:var(--gold)}
.dot--buy{background:#5b9bd5}
.chart-range{display:flex;gap:6px;background:var(--ink-3);padding:5px;border-radius:999px}
.chart-range__btn{border:0;background:none;color:var(--muted);font-weight:600;font-size:13px;padding:7px 14px;border-radius:999px;cursor:pointer;transition:.2s;font-family:inherit}
.chart-range__btn.active{background:linear-gradient(135deg,var(--gold-light),var(--gold));color:#1a1408}
.chart-canvas-wrap{position:relative;height:340px}

/* ============ Grid 2 ============ */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:40px}

/* ============ World card ============ */
.world-card{background:var(--ink-2);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.world-card__top{display:flex;justify-content:space-between;align-items:flex-start}
.world-card__label{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}
.world-card__price{font-size:42px;font-weight:800;line-height:1.1;margin-top:6px}
.world-card__unit{font-size:15px;color:var(--muted);font-weight:500}
.world-card__chg{font-size:15px;font-weight:700;padding:6px 12px;border-radius:999px}
.world-card__grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px}
.world-stat{background:var(--ink-3);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 16px}
.world-stat span{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}
.world-stat strong{display:block;font-size:18px;margin-top:4px}

/* ============ News ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:var(--ink-2);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .25s,border-color .25s}
.news-card:hover{transform:translateY(-5px);border-color:rgba(212,175,55,.4)}
.news-card__img{height:170px;background:linear-gradient(135deg,var(--ink-3),var(--news-img-2));position:relative;display:grid;place-items:center;overflow:hidden}
.news-card__img img{width:100%;height:100%;object-fit:cover}
.news-card__icon{font-size:42px;opacity:.5}
.news-card__tag{position:absolute;top:12px;left:12px;font-size:12px;font-weight:700;color:#1a1408;background:linear-gradient(135deg,var(--gold-light),var(--gold));padding:4px 10px;border-radius:999px;z-index:2}
.news-card__body{padding:18px}
.news-card__date{font-size:13px;color:var(--gold);font-weight:600}
.news-card__title{font-size:17px;font-weight:700;margin:8px 0;line-height:1.4}
.news-card__title a{color:inherit}
.news-card__title a:hover{color:var(--gold)}
.news-card__excerpt{font-size:14px;color:var(--muted)}

/* ============ Buttons ============ */
.btn-gold{
  border:0;cursor:pointer;font-family:inherit;font-weight:700;font-size:15px;color:#1a1408;
  padding:13px 26px;border-radius:999px;display:inline-block;
  background:linear-gradient(135deg,var(--gold-light),var(--gold));
  transition:transform .2s,box-shadow .2s;
}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(212,175,55,.4)}
.btn-ghost{
  border:1px solid var(--line);color:var(--text);font-weight:600;font-size:14px;
  padding:10px 20px;border-radius:999px;transition:.2s;display:inline-block;
}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}

/* ============ CTA ============ */
.cta{padding:56px 0;background:
  radial-gradient(700px 300px at 100% 0%,rgba(212,175,55,.15),transparent 60%),var(--ink)}
.cta__inner{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap;
  background:linear-gradient(160deg,var(--ink-2),var(--ink-3));border:1px solid var(--line);
  border-radius:24px;padding:40px}
.cta__title{font-size:26px;font-weight:800}
.cta__sub{color:var(--muted);margin-top:8px}
.cta__form{display:flex;gap:12px;flex-wrap:wrap}
.cta__form input{
  background:var(--ink);border:1px solid var(--line);color:var(--text);
  padding:13px 18px;border-radius:999px;font-family:inherit;font-size:15px;min-width:260px;
}
.cta__form input:focus{outline:none;border-color:var(--gold)}

/* ============ Article (single) ============ */
.article{max-width:780px;margin:0 auto;padding:56px 0}
.article__title{font-size:clamp(26px,4vw,40px);font-weight:800;line-height:1.2;margin:14px 0}
.article__meta{color:var(--muted);font-size:14px;margin-bottom:24px}
.article__meta a{color:var(--gold)}
.article__thumb{border-radius:var(--radius);overflow:hidden;margin-bottom:28px;border:1px solid var(--line)}
.article__content{font-size:17px;line-height:1.8}
.article__content p{margin-bottom:18px}
.article__content h2,.article__content h3{margin:28px 0 12px}
.article__content a{color:var(--gold);text-decoration:underline}
.article__content img{border-radius:var(--radius);margin:18px 0}
.article__content ul,.article__content ol{margin:0 0 18px 22px}
.article__content blockquote{border-left:3px solid var(--gold);padding-left:18px;color:var(--muted);margin:18px 0}

/* ============ Footer ============ */
.footer{background:var(--footer-bg);border-top:1px solid var(--line);padding-top:54px}
.footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:30px;padding-bottom:40px}
.footer__col h4{font-size:15px;margin-bottom:16px;color:var(--gold)}
.footer__col a,.footer__col p{display:block;color:var(--muted);font-size:14px;margin-bottom:10px;transition:.2s}
.footer__col a:hover{color:var(--gold)}
.logo--footer{margin-bottom:16px}
.footer__about{color:var(--muted);font-size:14px;max-width:320px}
.footer__bottom{border-top:1px solid var(--line);padding:20px 0;font-size:13px;color:var(--muted);text-align:center}
.footer__bottom strong{color:var(--gold)}

/* ============ Responsive ============ */
@media(max-width:960px){
  .hero__inner{grid-template-columns:1fr;gap:32px}
  .grid-2{grid-template-columns:1fr;gap:32px}
  .news-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .nav{
    position:fixed;top:72px;left:0;right:0;
    flex-direction:column;gap:0;background:var(--ink-2);
    border-bottom:1px solid var(--line);padding:10px;
    transform:translateY(-150%);transition:transform .3s;
  }
  .nav.open{transform:translateY(0)}
  .nav__link,.nav a{border-radius:10px}
  .nav-toggle{display:flex}
  .news-grid{grid-template-columns:1fr}
  .hero__cards{grid-template-columns:1fr 1fr}
  .cta__inner{flex-direction:column;align-items:flex-start}
}
@media(max-width:420px){
  .hero__cards{grid-template-columns:1fr}
}