/*
Theme Name: Rang Dep Va Khoe
Theme URI: https://rangdepvakhoe.com
Author: Rang Dep Va Khoe
Description: Theme classic toi gian cho Rang Dep Va Khoe, tong teal-mint va coral, mobile-first.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: LICENSE
Text Domain: rang-dep-va-khoe
*/

:root{
  --teal:#0e9488;
  --teal-dark:#0b5c56;
  --teal-soft:#dff3f0;
  --mint-mist:#f0faf8;
  --coral:#f0653f;
  --coral-dark:#c14324;
  --ink:#20282b;
  --ink-soft:#5a6568;
  --line:#dde7e5;
  --paper:#ffffff;
  --radius:14px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:var(--font);background:var(--paper);color:var(--ink);line-height:1.7;font-size:16px}
a{color:var(--teal);text-decoration:none}
a:hover{color:var(--coral-dark)}
img{max-width:100%;height:auto}
.container{max-width:1140px;margin:0 auto;padding:0 20px}

/* ---------- Header ---------- */
.site-header{background:var(--paper);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.site-header .container{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;padding-bottom:14px}
.site-logo{font-size:1.3rem;font-weight:700;letter-spacing:.01em;color:var(--ink);line-height:1.25}
.site-logo .logo-accent{color:var(--coral)}
.site-logo .logo-sub{display:block;font-size:.64rem;font-weight:400;letter-spacing:.24em;text-transform:uppercase;color:var(--ink-soft);margin-top:2px}
.site-nav ul{display:flex;flex-wrap:wrap;gap:2px;list-style:none}
.site-nav a{display:block;padding:9px 12px;border-radius:9px;font-size:.86rem;color:var(--ink-soft);transition:background .2s,color .2s}
.site-nav a:hover,.site-nav a.is-active{background:var(--teal-soft);color:var(--teal-dark)}

/* ---------- Hero ---------- */
.site-hero{background:linear-gradient(135deg,var(--mint-mist) 0%,#e6f5f2 50%,#ffe8df 100%);border-bottom:1px solid var(--line)}
.site-hero .container{padding-top:56px;padding-bottom:56px;max-width:780px;text-align:center}
.hero-kicker{display:inline-block;font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;color:var(--teal-dark);border:1px solid var(--teal);border-radius:30px;padding:6px 18px;margin-bottom:18px}
.hero-title{font-size:clamp(1.8rem,4.6vw,2.7rem);line-height:1.22;font-weight:700;margin-bottom:16px}
.hero-title em{font-style:normal;color:var(--coral-dark)}
.hero-desc{color:var(--ink-soft);max-width:620px;margin:0 auto 26px}
.hero-cta{display:inline-flex;flex-wrap:wrap;gap:12px;justify-content:center}
.btn{display:inline-block;padding:11px 24px;border-radius:30px;font-size:.9rem;font-weight:600;transition:transform .2s,box-shadow .2s}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(14,148,136,.28)}
.btn-ghost{background:#fff;color:var(--teal-dark);border:1px solid var(--teal)}
.btn-ghost:hover{color:var(--teal-dark);background:var(--teal-soft)}

/* ---------- Pillars ---------- */
.pillars{padding:56px 0 8px}
.section-head{text-align:center;max-width:640px;margin:0 auto 36px}
.section-head .eyebrow{font-size:.75rem;letter-spacing:.18em;text-transform:uppercase;color:var(--coral);font-weight:600}
.section-head h2{font-size:clamp(1.5rem,3.4vw,2rem);line-height:1.25;font-weight:700;margin:8px 0 10px}
.section-head p{color:var(--ink-soft);font-size:.96rem}
.pillar-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:560px){.pillar-grid{grid-template-columns:1fr 1fr}}
@media(min-width:960px){.pillar-grid{grid-template-columns:repeat(4,1fr)}}
.pillar-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;display:flex;flex-direction:column;gap:12px;transition:box-shadow .25s,transform .25s;position:relative;overflow:hidden}
.pillar-card::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--teal),var(--coral))}
.pillar-card:hover{box-shadow:0 12px 30px rgba(11,92,86,.13);transform:translateY(-4px)}
.pillar-ico{width:52px;height:52px;border-radius:14px;background:var(--teal-soft);display:flex;align-items:center;justify-content:center;font-size:1.6rem;color:var(--teal-dark)}
.pillar-card h3{font-size:1.1rem;font-weight:700;line-height:1.35}
.pillar-card p{font-size:.9rem;color:var(--ink-soft);flex:1}
.pillar-card .pillar-link{font-size:.85rem;font-weight:600;color:var(--coral-dark)}

/* ---------- Layout ---------- */
.site-main .container{display:grid;grid-template-columns:1fr;gap:44px;padding-top:56px;padding-bottom:60px}
@media(min-width:900px){.site-main .container{grid-template-columns:minmax(0,1fr) 320px}}

.section-title{font-size:1.35rem;font-weight:700;margin-bottom:24px;display:flex;align-items:center;gap:12px}
.section-title::after{content:"";flex:1;height:1px;background:var(--line)}

/* ---------- Post grid ---------- */
.post-grid{display:grid;grid-template-columns:1fr;gap:26px}
@media(min-width:560px){.post-grid{grid-template-columns:1fr 1fr}}
.post-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .25s,transform .25s}
.post-card:hover{box-shadow:0 10px 28px rgba(14,148,136,.15);transform:translateY(-3px)}
.post-card-thumb{aspect-ratio:16/9;display:flex;align-items:flex-end;padding:12px;overflow:hidden}
.post-card-thumb img{width:100%;height:100%;object-fit:cover}
.thumb-1{background:linear-gradient(120deg,#b6e6df,#ffd8c9)}
.thumb-2{background:linear-gradient(120deg,#ffd0bd,#bfeae4)}
.thumb-3{background:linear-gradient(120deg,#a7ded6,#ffe1b0)}
.thumb-4{background:linear-gradient(120deg,#ffc7b3,#a9ded7)}
.post-card-cat{background:rgba(255,255,255,.92);color:var(--teal-dark);font-size:.72rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:4px 11px;border-radius:20px}
.post-card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:9px;flex:1}
.post-card-title{font-size:1.06rem;line-height:1.45;font-weight:700}
.post-card-title a{color:var(--ink)}
.post-card-title a:hover{color:var(--teal)}
.post-card-excerpt{font-size:.9rem;color:var(--ink-soft);flex:1}
.post-card-meta{font-size:.8rem;color:var(--ink-soft);display:flex;gap:8px;align-items:center}
.post-card-meta .meta-dot{width:3px;height:3px;border-radius:50%;background:var(--coral)}

/* ---------- Sidebar ---------- */
.site-sidebar{display:flex;flex-direction:column;gap:30px}
.widget{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.widget-title{font-size:1rem;font-weight:700;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--teal-soft)}
.featured-list{list-style:none;display:flex;flex-direction:column;gap:14px}
.featured-list li{display:flex;gap:12px;align-items:baseline}
.featured-num{font-size:1.15rem;font-weight:700;color:var(--coral);min-width:1.4em}
.featured-list a{color:var(--ink);font-size:.92rem;line-height:1.5}
.featured-list a:hover{color:var(--teal)}
.category-list{list-style:none;display:flex;flex-direction:column}
.category-list li{border-bottom:1px dashed var(--line)}
.category-list li:last-child{border-bottom:none}
.category-list a{display:flex;justify-content:space-between;padding:11px 2px;font-size:.9rem;color:var(--ink)}
.category-list a:hover{color:var(--teal)}
.category-count{color:var(--ink-soft);font-size:.82rem}
.cta-widget{background:linear-gradient(140deg,var(--teal) 0%,var(--teal-dark) 100%);color:#fff}
.cta-widget .widget-title{color:#fff;border-bottom-color:rgba(255,255,255,.25)}
.cta-widget p{font-size:.9rem;color:#d9f0ed;margin-bottom:16px}
.cta-widget .btn{width:100%;text-align:center;background:#fff;color:var(--teal-dark)}
.cta-widget .btn:hover{color:var(--coral-dark)}
.widget-disclaimer{font-size:.82rem;color:var(--ink-soft);line-height:1.6}

/* ---------- Post content (single) ---------- */
.post-detail{margin-top:52px;padding-top:44px;border-top:1px solid var(--line)}
.post-header{margin-bottom:24px}
.post-category{font-size:.75rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--coral-dark)}
.post-title{font-size:clamp(1.5rem,3.6vw,2.1rem);line-height:1.3;font-weight:700;margin:10px 0 12px}
.post-meta{font-size:.85rem;color:var(--ink-soft)}
.post-meta strong{color:var(--ink);font-weight:600}
.post-featured-img{border-radius:var(--radius);aspect-ratio:21/9;background:linear-gradient(115deg,var(--teal) 0%,#5cbcb1 55%,var(--coral) 100%);display:flex;align-items:center;justify-content:center;color:#fff;font-size:.8rem;letter-spacing:.2em;text-transform:uppercase;margin-bottom:30px;overflow:hidden}
.post-featured-img img{width:100%;height:100%;object-fit:cover}
.post-content{max-width:70ch}
.post-content h2{font-size:1.35rem;margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--teal)}
.post-content h3{font-size:1.1rem;margin:26px 0 10px;color:var(--coral-dark)}
.post-content p{margin-bottom:16px}
.post-content ul{margin:0 0 16px 22px}
.post-content li{margin-bottom:6px}
.post-content blockquote{background:var(--mint-mist);border-left:4px solid var(--teal);border-radius:0 var(--radius) var(--radius) 0;padding:18px 22px;margin:22px 0;font-style:italic;color:var(--ink)}
.post-content blockquote cite{display:block;margin-top:8px;font-style:normal;font-size:.85rem;color:var(--ink-soft)}
.post-content .content-img{border-radius:var(--radius);aspect-ratio:16/9;background:linear-gradient(120deg,#b6e6df,#ffd8c9);margin:22px 0 6px}
.post-content figcaption{font-size:.82rem;color:var(--ink-soft);text-align:center;margin-bottom:22px}
.table-wrap{overflow-x:auto;margin:22px 0}
.post-content table{width:100%;border-collapse:collapse;font-size:.92rem;min-width:480px}
.post-content th{background:var(--teal-soft);color:var(--teal-dark);text-align:left;padding:11px 14px;font-weight:600}
.post-content td{padding:11px 14px;border-bottom:1px solid var(--line)}
.post-content tbody tr:nth-child(even){background:var(--mint-mist)}
.post-content .medical-note{background:#fff2ec;border:1px solid #f6d4c6;border-radius:var(--radius);padding:16px 18px;margin:22px 0;font-size:.9rem;color:var(--ink-soft)}
.post-content .medical-note strong{color:var(--coral-dark)}

/* ---------- Page (static) ---------- */
.page-content{max-width:70ch;margin-top:12px}
.page-content h2{font-size:1.35rem;margin:28px 0 14px}
.page-content p{margin-bottom:16px}

/* ---------- 404 ---------- */
.error-404{max-width:600px;margin:0 auto;text-align:center;padding:60px 20px}
.error-404 h1{font-size:2.4rem;color:var(--teal);margin-bottom:14px}
.error-404 p{color:var(--ink-soft);margin-bottom:20px}

/* ---------- Footer ---------- */
.site-footer{background:var(--teal-dark);color:#cfe6e2;margin-top:24px}
.site-footer .container{display:grid;grid-template-columns:1fr;gap:30px;padding-top:46px;padding-bottom:30px}
@media(min-width:720px){.site-footer .container{grid-template-columns:1.5fr 1fr 1fr}}
.footer-brand h2{color:#fff;font-size:1.15rem;margin-bottom:10px}
.footer-brand h2 span{color:var(--coral)}
.footer-brand p{font-size:.88rem;line-height:1.7}
.footer-col h3{color:#fff;font-size:.9rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:14px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.footer-col a{color:#cfe6e2;font-size:.9rem}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);text-align:center;font-size:.8rem;color:#9fc7c1;padding:16px 20px}