/*
Theme Name: DuckDayDream
Theme URI: https://duckdaydream.com/
Author: Duckdaydream.com
Description: ธีมสำหรับ Technology & AI Learning Hub — สะอาด อ่านง่าย รองรับภาษาไทย มี Dark Mode สารบัญอัตโนมัติ และปุ่มคัดลอกโค้ด
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
Text Domain: duckdaydream
*/

:root{
  --bg:#fafaf7; --surface:#ffffff; --surface-2:#f1f2f8; --text:#14172b; --muted:#5b6078;
  --border:#e4e6f0; --brand:#ffc21a; --brand-ink:#3a2a00; --accent:#4f46e5; --accent-2:#7c3aed;
  --code-bg:#0f1226; --code-text:#e6e8ff; --radius:16px; --shadow:0 6px 24px rgba(20,23,43,.07);
  --font:"IBM Plex Sans Thai","Noto Sans Thai",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
[data-theme="dark"]{
  --bg:#0c0f1f; --surface:#141933; --surface-2:#1b2142; --text:#eceefb; --muted:#a3a8c8;
  --border:#252c52; --accent:#8b8cff; --accent-2:#b18cff; --shadow:0 6px 24px rgba(0,0,0,.35);
  --code-bg:#080b19;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:17px;line-height:1.75;-webkit-font-smoothing:antialiased}
img,video,iframe{max-width:100%;height:auto}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.35;margin:0 0 .6em;font-weight:700;letter-spacing:-.01em}
.container{width:min(1160px,100% - 40px);margin-inline:auto}
.skip-link{position:absolute;left:-999px;top:8px;background:var(--brand);color:var(--brand-ink);padding:8px 14px;border-radius:8px;z-index:200}
.skip-link:focus{left:8px}
.screen-reader-text{position:absolute!important;clip:rect(1px,1px,1px,1px);width:1px;height:1px;overflow:hidden}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px}

/* progress */
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--brand),var(--accent));z-index:120}

/* header */
.site-header{position:sticky;top:0;z-index:100;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:68px}
.brand{display:flex;align-items:center;flex-shrink:0}
.brand img{max-height:44px;width:auto;display:block}
[data-theme="dark"] .brand img{filter:brightness(1.08)}
.brand-text{font-weight:800;font-size:1.25rem;color:var(--text)}
.brand-text:hover{text-decoration:none}
.primary-nav{margin-left:auto}
.primary-nav ul{list-style:none;display:flex;gap:4px;margin:0;padding:0}
.primary-nav a{display:block;padding:8px 14px;border-radius:999px;color:var(--text);font-weight:500;font-size:.95rem}
.primary-nav a:hover,.primary-nav .current-menu-item>a{background:var(--surface-2);text-decoration:none}
.primary-nav .current-menu-item>a{color:var(--accent)}
.header-actions{display:flex;gap:6px}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--border);background:var(--surface);color:var(--text);display:grid;place-items:center;cursor:pointer}
.icon-btn:hover{background:var(--surface-2)}
.icon-btn svg{width:19px;height:19px}
.menu-toggle{display:none}
.theme-toggle .i-sun{display:none}
[data-theme="dark"] .theme-toggle .i-sun{display:block}
[data-theme="dark"] .theme-toggle .i-moon{display:none}
.search-panel{border-top:1px solid var(--border);padding:14px 0;background:var(--surface)}
.search-panel[hidden]{display:none}
.search-form{display:flex;gap:8px}
.search-form input[type=search]{flex:1;padding:12px 16px;border-radius:12px;border:1px solid var(--border);background:var(--bg);color:var(--text);font:inherit}
.btn,.search-form input[type=submit],.wp-block-search__button{display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:999px;border:0;font:inherit;font-weight:600;cursor:pointer;background:var(--brand);color:var(--brand-ink)}
.btn:hover{text-decoration:none;filter:brightness(.96);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{background:var(--surface-2)}

/* hero */
.hero{position:relative;overflow:hidden;padding:84px 0 64px}
.hero::before{content:"";position:absolute;inset:-20% -10% auto auto;width:560px;height:560px;background:radial-gradient(circle,rgba(255,194,26,.28),transparent 65%);z-index:0}
.hero::after{content:"";position:absolute;inset:auto auto -30% -10%;width:520px;height:520px;background:radial-gradient(circle,rgba(79,70,229,.2),transparent 65%);z-index:0}
.hero .container{position:relative;z-index:1;display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}
.badge{display:inline-flex;gap:8px;align-items:center;padding:6px 14px;border-radius:999px;background:var(--surface);border:1px solid var(--border);font-size:.85rem;font-weight:600;margin-bottom:20px}
.badge i{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(255,194,26,.3)}
.hero h1{font-size:clamp(2rem,4.6vw,3.4rem);line-height:1.25}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{color:var(--muted);font-size:1.12rem;max-width:56ch;margin:0 0 28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.hero-art{background:var(--code-bg);color:var(--code-text);border-radius:20px;padding:22px;box-shadow:var(--shadow);font-family:var(--mono);font-size:.86rem;line-height:1.7;transform:rotate(2deg);border:1px solid var(--border)}
.hero-art .dots{display:flex;gap:6px;margin-bottom:14px}
.hero-art .dots span{width:11px;height:11px;border-radius:50%;background:#ff5f57}
.hero-art .dots span:nth-child(2){background:#febc2e}.hero-art .dots span:nth-child(3){background:#28c840}
.hero-art .k{color:#b18cff}.hero-art .s{color:#ffc21a}.hero-art .c{color:#7c84b3}
.hero-art .duck{font-size:2rem;display:block;margin-top:10px;font-family:var(--font)}

/* sections */
.section{padding:44px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:24px}
.section-head h2{margin:0;font-size:1.6rem}
.section-head p{margin:4px 0 0;color:var(--muted);font-size:.95rem}
.more-link{font-weight:600;white-space:nowrap}
.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.topic{display:block;padding:22px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);color:var(--text);transition:.2s}
.topic:hover{text-decoration:none;transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--accent)}
.topic .ico{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:1.4rem;background:var(--surface-2);margin-bottom:12px}
.topic strong{display:block;font-size:1.05rem}
.topic span{color:var(--muted);font-size:.9rem}

/* cards */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card-thumb{aspect-ratio:16/9;display:block;background:linear-gradient(135deg,var(--brand),var(--accent));position:relative;overflow:hidden}
.card-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.card-thumb .ph{position:absolute;inset:0;display:grid;place-items:center;font-size:3rem}
.card-body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1}
.cat-chip{align-self:flex-start;font-size:.75rem;font-weight:700;letter-spacing:.03em;text-transform:uppercase;padding:3px 10px;border-radius:999px;background:rgba(255,194,26,.22);color:var(--text)}
.cat-chip:hover{text-decoration:none;background:var(--brand);color:var(--brand-ink)}
.card h3{font-size:1.15rem;margin:0}
.card h3 a{color:var(--text)}
.card h3 a:hover{color:var(--accent);text-decoration:none}
.card p{margin:0;color:var(--muted);font-size:.93rem}
.meta{display:flex;flex-wrap:wrap;gap:6px 14px;color:var(--muted);font-size:.83rem;margin-top:auto;padding-top:6px}
.card.featured{grid-column:span 3;flex-direction:row}
.card.featured .card-thumb{flex:1.2;aspect-ratio:auto;min-height:280px}
.card.featured .card-body{flex:1;justify-content:center;padding:32px}
.card.featured h3{font-size:1.7rem}

/* page head */
.page-head{padding:56px 0 24px}
.page-head h1{font-size:clamp(1.8rem,3.5vw,2.6rem);margin:0}
.page-head p{color:var(--muted);margin:8px 0 0}
.pagination{margin:40px 0 0}
.nav-links{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}
.page-numbers{padding:8px 16px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text)}
.page-numbers.current{background:var(--brand);border-color:var(--brand);color:var(--brand-ink);font-weight:700}
.page-numbers:hover{text-decoration:none;background:var(--surface-2)}

/* single */
.single-wrap{padding:48px 0 32px}
.single-head{max-width:800px;margin:0 auto 28px}
.single-head h1{font-size:clamp(1.9rem,4vw,2.8rem);margin:12px 0}
.single-thumb{max-width:1000px;margin:0 auto 36px}
.single-thumb img{width:100%;border-radius:20px;display:block}
.entry-content{max-width:760px;margin:0 auto}
.entry-content>*{margin-top:0;margin-bottom:1.3em}
.entry-content h2{font-size:1.65rem;margin-top:2em;padding-top:.2em;scroll-margin-top:90px}
.entry-content h3{font-size:1.3rem;margin-top:1.6em;scroll-margin-top:90px}
.entry-content a{text-decoration:underline;text-underline-offset:3px}
.entry-content img{border-radius:12px}
.entry-content figcaption{text-align:center;color:var(--muted);font-size:.87rem}
.entry-content blockquote{margin-inline:0;padding:14px 22px;border-left:4px solid var(--brand);background:var(--surface);border-radius:0 12px 12px 0;color:var(--muted)}
.entry-content :not(pre)>code{background:var(--surface-2);padding:2px 7px;border-radius:6px;font-family:var(--mono);font-size:.88em}
.entry-content pre{position:relative;background:var(--code-bg);color:var(--code-text);padding:20px;border-radius:14px;overflow-x:auto;font-family:var(--mono);font-size:.88rem;line-height:1.65}
.copy-btn{position:absolute;top:8px;right:8px;background:rgba(255,255,255,.12);color:#fff;border:0;border-radius:8px;padding:4px 10px;font:inherit;font-size:.75rem;cursor:pointer}
.copy-btn:hover{background:rgba(255,255,255,.25)}
.entry-content table{width:100%;border-collapse:collapse;font-size:.95rem;display:block;overflow-x:auto}
.entry-content th,.entry-content td{border:1px solid var(--border);padding:10px 14px;text-align:left}
.entry-content th{background:var(--surface-2)}
.alignwide{width:min(1000px,100vw - 40px);max-width:none;margin-inline:50%;transform:translateX(-50%)}
.toc{max-width:760px;margin:0 auto 32px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:18px 22px}
.toc strong{display:block;margin-bottom:8px}
.toc ol{margin:0;padding-left:20px;font-size:.95rem}
.toc a{color:var(--text)}
.toc a:hover{color:var(--accent)}
.post-tags{max-width:760px;margin:32px auto 0;display:flex;flex-wrap:wrap;gap:8px}
.post-tags a{padding:4px 12px;border-radius:999px;background:var(--surface-2);color:var(--text);font-size:.85rem}
.author-box{max-width:760px;margin:36px auto;display:flex;gap:16px;align-items:center;padding:20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}
.author-box img{border-radius:50%}
.author-box p{margin:0;color:var(--muted);font-size:.93rem}
.disclaimer-note{max-width:760px;margin:0 auto 20px;font-size:.85rem;color:var(--muted);padding:12px 16px;background:var(--surface);border-radius:12px;border:1px dashed var(--border)}
.related{padding:24px 0 56px}

/* comments */
.comments-area{max-width:760px;margin:0 auto;padding:16px 0 56px}
.comment-list{list-style:none;padding:0}
.comment-body{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px 20px;margin-bottom:14px}
.comment-respond input[type=text],.comment-respond input[type=email],.comment-respond input[type=url],.comment-respond textarea{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text);font:inherit}
.comment-respond input[type=submit]{background:var(--brand);color:var(--brand-ink);border:0;padding:11px 24px;border-radius:999px;font:inherit;font-weight:600;cursor:pointer}

/* footer */
.site-footer{margin-top:40px;border-top:1px solid var(--border);background:var(--surface)}
.footer-widgets{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;padding:48px 0 24px}
.footer-widgets h3,.widget-title{font-size:1rem;margin-bottom:12px}
.footer-widgets ul{list-style:none;margin:0;padding:0}
.footer-widgets li{margin-bottom:6px}
.footer-widgets p{color:var(--muted);font-size:.93rem}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding:20px 0 32px;border-top:1px solid var(--border);color:var(--muted);font-size:.87rem}
.footer-nav ul{list-style:none;display:flex;flex-wrap:wrap;gap:6px 18px;margin:0;padding:0}
.footer-nav a{color:var(--muted)}
.empty{padding:48px 0;text-align:center;color:var(--muted)}
.e404{text-align:center;padding:96px 0}
.e404 .big{font-size:5rem}

/* responsive */
@media (max-width:960px){
  .hero .container{grid-template-columns:1fr}
  .hero-art{display:none}
  .topic-grid{grid-template-columns:repeat(2,1fr)}
  .grid{grid-template-columns:repeat(2,1fr)}
  .card.featured{grid-column:span 2}
  .footer-widgets{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  body{font-size:16px}
  .menu-toggle{display:grid}
  .primary-nav{position:absolute;top:100%;left:0;right:0;margin:0;background:var(--surface);border-bottom:1px solid var(--border);padding:12px 20px 18px;display:none}
  .primary-nav.open{display:block}
  .primary-nav ul{flex-direction:column}
  .header-actions{margin-left:auto}
  .grid,.topic-grid{grid-template-columns:1fr}
  .card.featured{grid-column:auto;flex-direction:column}
  .card.featured .card-thumb{min-height:0;aspect-ratio:16/9}
  .card.featured .card-body{padding:20px}
  .card.featured h3{font-size:1.3rem}
  .hero{padding:52px 0 40px}
  .footer-widgets{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}