/* ===================================================
   Kriengsak Law – Complete Multi-page Static Site
   Matched to React/Tailwind v4 + shadcn/ui
   Font: Sarabun (Google Fonts)
   =================================================== */

/* ---------- Reset & Base ---------- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Sarabun','TH Sarabun',sans-serif;font-size:16px;line-height:1.6;color:oklch(0.15 0.02 260);background:#fff;min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
h1,h2,h3,h4{font-family:'Sarabun','TH Sarabun',sans-serif;font-weight:700;letter-spacing:-0.02em;line-height:1.25}

/* ---------- Design Tokens ---------- */
:root{
  --primary:oklch(0.35 0.15 260);
  --primary-fg:oklch(0.98 0 0);
  --fg:oklch(0.15 0.02 260);
  --card-bg:oklch(0.98 0.001 260);
  --card-fg:oklch(0.15 0.02 260);
  --muted:oklch(0.92 0.002 260);
  --muted-light:oklch(0.92 0.002 260 / 0.3);
  --muted-fg:oklch(0.45 0.05 260);
  --border:oklch(0.88 0.003 260);
  --radius:0.5rem;
  --radius-sm:calc(var(--radius) - 4px);
  --radius-md:calc(var(--radius) - 2px);
  --radius-lg:var(--radius);
  --radius-xl:calc(var(--radius) + 4px);
  --shadow-xs:0 1px rgba(0,0,0,.05);
  --shadow-sm:0 1px 2px 0 rgba(0,0,0,.05);
  --shadow-md:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -2px rgba(0,0,0,.1);
  --shadow-lg:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -4px rgba(0,0,0,.1);
  --container:1280px;
}

/* ---------- Container ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 1rem}
@media(min-width:640px){.container{padding:0 1.5rem}}
@media(min-width:1024px){.container{padding:0 2rem;max-width:1280px}}

/* ---------- Utilities ---------- */
.text-muted{color:var(--muted-fg)}
.text-primary{color:var(--primary)}
.text-center{text-align:center}
.text-left{text-align:left}
.bg-white{background:#fff}
.bg-muted{background:var(--muted)}
.bg-muted-light{background:var(--muted-light)}
.max-w-2xl{max-width:672px}
.max-w-3xl{max-width:768px}
.max-w-4xl{max-width:896px}
.mx-auto{margin-left:auto;margin-right:auto}
.mb-2{margin-bottom:8px}
.mb-4{margin-bottom:16px}
.mb-6{margin-bottom:24px}
.mb-8{margin-bottom:32px}
.mb-12{margin-bottom:48px}
.mt-2{margin-top:8px}
.space-y-3>*+*{margin-top:12px}
.space-y-4>*+*{margin-top:16px}

/* ===================================================
   BUTTONS
   =================================================== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:8px 16px;font-size:.875rem;font-weight:500;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;transition:background .2s,color .2s,border-color .2s;white-space:nowrap;font-family:inherit}
.btn-primary{background:var(--primary);color:var(--primary-fg)}
.btn-primary:hover{background:oklch(0.35 0.15 260 / 0.9)}
.btn-white{background:#fff;color:var(--primary)}
.btn-white:hover{background:#f3f4f6}
.btn-outline{background:transparent;color:var(--fg);border-color:var(--border);box-shadow:var(--shadow-xs)}
.btn-outline:hover{background:oklch(0.35 0.15 260);color:var(--primary-fg)}
.btn-outline-white{background:transparent;color:#fff;border-color:#fff}
.btn-outline-white:hover{background:rgba(255,255,255,.1)}
.btn-outline-green{background:transparent;color:#15803d;border-color:#22c55e;box-shadow:var(--shadow-xs)}
.btn-outline-green:hover{background:#f0fdf4}
.btn-youtube{background:#dc2626;color:#fff;border:none;padding:12px 20px;border-radius:var(--radius-lg);font-weight:600;font-size:.875rem}
.btn-youtube:hover{background:#b91c1c}
.btn-sm{height:32px;padding:0 12px;font-size:.875rem;border-radius:var(--radius-md);gap:6px}
.btn-lg{height:40px;padding:0 24px;font-size:.875rem;font-weight:500;border-radius:var(--radius-md)}
.btn-block{width:100%}

/* ===================================================
   HEADER
   =================================================== */
.header{position:sticky;top:0;z-index:50;width:100%;background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:12px;font-weight:700;color:var(--primary);transition:opacity .2s}
.logo:hover{opacity:.8}
.logo img{width:40px;height:40px;border-radius:50%;object-fit:cover}
.logo-text{font-size:.875rem}
.nav-desktop{display:none;align-items:center;gap:4px}
.nav-link{padding:8px 16px;font-size:.875rem;font-weight:500;color:var(--fg);border-radius:var(--radius-md);transition:color .2s,background .2s}
.nav-link:hover,.nav-link.active{color:var(--primary);background:var(--muted-light)}
.header-actions-desktop{display:none;align-items:center;gap:8px}
.header-actions-mobile{display:flex;align-items:center;gap:8px}
.search-btn{padding:8px;background:none;border:none;cursor:pointer;border-radius:var(--radius-lg);transition:background .2s;display:flex;align-items:center;justify-content:center;color:var(--fg)}
.search-btn:hover{background:#f3f4f6}
.hamburger{display:flex;flex-direction:column;justify-content:center;gap:5px;width:36px;height:36px;padding:6px;background:none;border:none;cursor:pointer;border-radius:var(--radius-md);transition:background .2s}
.hamburger:hover{background:var(--muted)}
.hamburger span{display:block;width:100%;height:2px;background:var(--fg);border-radius:2px;transition:transform .3s,opacity .3s}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-mobile{display:none;flex-direction:column;gap:8px;padding:16px;border-top:1px solid var(--border);background:#fff}
.nav-mobile.open{display:flex}
.nav-link-mobile{display:block;padding:8px 16px;font-size:.875rem;font-weight:500;color:var(--fg);border-radius:var(--radius-md);transition:color .2s,background .2s}
.nav-link-mobile:hover{color:var(--primary);background:var(--muted-light)}
@media(min-width:640px){.header-actions-desktop{display:flex}.logo-text{display:inline}}
@media(max-width:639px){.logo-text{display:none}}
@media(min-width:768px){.nav-desktop{display:flex}.hamburger{display:none}.nav-mobile{display:none!important}}

/* ===================================================
   HERO (Home)
   =================================================== */
.hero{position:relative;background:url('../assets/home-hero-bg.png') center/cover no-repeat;color:#fff;padding:80px 0;min-height:400px;display:flex;align-items:center}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(to right,oklch(0.35 0.15 260 / 0.4),transparent)}
.hero-content{position:relative;z-index:2}
.hero-text{max-width:672px}
.hero h1{font-size:2.25rem;margin-bottom:16px}
.hero-desc{font-size:1.125rem;opacity:.9;margin-bottom:16px;line-height:1.7}
.hero-address{font-size:1rem;opacity:.9;margin-bottom:32px}
.hero-buttons{display:flex;flex-wrap:wrap;gap:16px}
.hero-buttons .btn{height:40px;padding:0 24px}
@media(min-width:768px){.hero{padding:128px 0}.hero h1{font-size:3rem}.hero-desc{font-size:1.25rem}.hero-address{font-size:1.125rem}}

/* ===================================================
   HERO (Sub-pages with background image)
   =================================================== */
.page-hero{position:relative;min-height:300px;display:flex;align-items:center;color:#fff;padding:64px 0;background-size:cover;background-position:center;background-repeat:no-repeat}
.page-hero-overlay{position:absolute;inset:0;background:linear-gradient(to right,rgba(30,58,138,.8),rgba(30,64,175,.6),transparent)}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{font-size:2.25rem;margin-bottom:16px}
.page-hero p{font-size:1.125rem;opacity:.9;max-width:672px}
@media(min-width:768px){.page-hero{padding:96px 0}.page-hero h1{font-size:3rem}}

/* Hero (gradient only - FAQ page) */
.page-hero-gradient{position:relative;padding:64px 0;color:var(--primary-fg);background:linear-gradient(to bottom right,var(--primary),oklch(0.35 0.15 260 / 0.8))}
.page-hero-gradient h1{font-size:2.25rem;margin-bottom:16px}
.page-hero-gradient p{font-size:1.125rem;opacity:.9;max-width:672px}
@media(min-width:768px){.page-hero-gradient{padding:96px 0}.page-hero-gradient h1{font-size:3rem}}

/* ===================================================
   SECTIONS
   =================================================== */
.section{padding:64px 0}
@media(min-width:768px){.section{padding:96px 0}}
.section-title{font-size:1.875rem;text-align:center;margin-bottom:48px;color:var(--fg)}
.section-title-left{font-size:1.875rem;margin-bottom:0;color:var(--fg)}
.section-subtitle{text-align:center;color:var(--muted-fg);max-width:672px;margin:0 auto 32px;font-size:.875rem}
@media(min-width:768px){.section-title{font-size:2.25rem}.section-title-left{font-size:2.25rem}}

/* Heading variants for sub-pages */
.heading-xl{font-size:1.875rem;font-weight:700;color:var(--fg)}
.heading-lg{font-size:1.5rem;font-weight:700;color:var(--fg)}
.heading-md{font-size:1.25rem;font-weight:700}
@media(min-width:768px){.heading-xl{font-size:2.25rem}.heading-lg{font-size:1.875rem}}

/* ---------- Grid ---------- */
.grid-2,.grid-3{display:grid;gap:24px}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
@media(min-width:768px){.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}}

/* ===================================================
   CARDS (shadcn/ui Card)
   =================================================== */
.card{background:var(--card-bg);color:var(--card-fg);display:flex;flex-direction:column;gap:24px;border-radius:var(--radius-xl);border:1px solid var(--border);padding:24px 0;box-shadow:var(--shadow-sm);transition:box-shadow .2s}
.card-hover:hover{box-shadow:var(--shadow-lg)}
.card-highlight{border-left:4px solid var(--primary)}
.card-header{padding:0 24px}
.card-header h3{font-size:1rem;font-weight:600;line-height:1}
.card-header-with-icon{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.icon-check,.icon-service{color:var(--primary);flex-shrink:0}
.card-body,.card-content{font-size:.875rem;color:var(--muted-fg);padding:0 24px}
.card-title{font-size:1rem;font-weight:600;line-height:1;color:var(--primary)}
.card-title-lg{font-size:1.25rem;font-weight:600;color:var(--primary);margin-bottom:8px}
.card-text-center{text-align:center}

/* ===================================================
   SERVICE TAGS
   =================================================== */
.service-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:16px}

/* ===================================================
   FAQ ACCORDION
   =================================================== */
.faq-list{max-width:768px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:last-child{border-bottom:none}
.faq-question{display:flex;flex:1;align-items:flex-start;justify-content:space-between;gap:16px;width:100%;padding:16px 0;background:none;border:none;cursor:pointer;text-align:left;font-size:.875rem;font-weight:500;color:var(--fg);font-family:inherit;border-radius:var(--radius-md);transition:all .2s}
.faq-question span{font-weight:600;text-align:left}
.faq-question:hover{color:var(--primary)}
.faq-chevron{flex-shrink:0;transition:transform .2s;color:var(--muted-fg);margin-top:2px}
.faq-item.active .faq-chevron{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .3s ease}
.faq-item.active .faq-answer{max-height:800px;padding-bottom:16px}
.faq-answer p,.faq-answer-text{color:var(--muted-fg);font-size:.875rem;margin-bottom:8px;line-height:1.7}
.faq-answer p strong{color:var(--fg);font-weight:500}

/* ===================================================
   PROCESS STEPS
   =================================================== */
.process-step{text-align:center}
.step-number{width:48px;height:48px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;background:var(--primary);color:var(--primary-fg);border-radius:50%;font-size:1.125rem;font-weight:700}
.process-step h3{font-size:1.25rem;margin-bottom:8px}
.process-step p{font-size:.875rem;color:var(--muted-fg)}
.process-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.process-grid{grid-template-columns:repeat(3,1fr)}}

/* ===================================================
   YOUTUBE
   =================================================== */
.youtube-header{margin-bottom:32px}
.youtube-meta{display:flex;flex-direction:column;gap:16px;margin-bottom:32px}
@media(min-width:768px){.youtube-meta{flex-direction:row;align-items:center;justify-content:space-between}}
.youtube-channel-badge{display:inline-flex;align-items:center;gap:12px;border:1px solid rgba(0,0,0,.1);border-radius:var(--radius-xl);padding:12px 16px;background:#fff;box-shadow:var(--shadow-sm)}
.yt-label{font-size:.875rem;font-weight:600;color:#dc2626}
.yt-divider{width:1px;height:16px;background:rgba(0,0,0,.1)}
.yt-channel-name{font-size:.875rem;font-weight:500}
@media(min-width:768px){.yt-channel-name{font-size:1rem}}
.youtube-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:1024px){.youtube-grid{grid-template-columns:repeat(3,1fr)}.youtube-main{grid-column:span 2}}
.youtube-side{display:flex;flex-direction:column;gap:24px}
.youtube-card{display:block;position:relative;border-radius:1rem;overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid rgba(0,0,0,.1);aspect-ratio:16/9;background:#000}
.youtube-card img{width:100%;height:100%;object-fit:cover}
.youtube-play-overlay{position:absolute;inset:0;background:rgba(0,0,0,.3);display:flex;align-items:center;justify-content:center;pointer-events:none;transition:background .2s}
.youtube-card:hover .youtube-play-overlay{background:rgba(0,0,0,.45)}
.play-btn{width:56px;height:56px;border-radius:50%;background:rgba(220,38,38,.95);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg)}
.play-btn svg{margin-left:2px}

/* ===================================================
   CTA BANNER
   =================================================== */
.cta-banner{background:linear-gradient(to right,var(--primary),oklch(0.35 0.15 260 / 0.8));color:var(--primary-fg);padding:64px 0}
@media(min-width:768px){.cta-banner{padding:80px 0}}
.cta-content{text-align:center}
.cta-content h2{font-size:1.875rem;margin-bottom:24px}
.cta-content p{font-size:1.125rem;opacity:.9;max-width:672px;margin:0 auto 32px}
.cta-buttons{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}
.cta-buttons .btn{height:40px;padding:0 24px}
@media(min-width:768px){.cta-content h2{font-size:2.25rem}}

/* ===================================================
   FOOTER
   =================================================== */
.footer{background:var(--primary);color:var(--primary-fg)}
.footer .container{padding-top:48px;padding-bottom:48px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;margin-bottom:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:repeat(4,1fr)}}
.footer-col h3{font-size:1.125rem;font-weight:700;margin-bottom:16px}
.footer-col p,.footer-col a{font-size:.875rem;opacity:.9;line-height:1.6}
.footer-col ul{display:flex;flex-direction:column;gap:8px}
.footer-col ul a:hover{text-decoration:underline}
.contact-list{gap:12px}
.contact-list li{display:flex;align-items:center;gap:8px;font-size:.875rem}
.contact-list svg{flex-shrink:0;opacity:.8}
.address{display:flex;gap:8px;font-size:.875rem}
.address svg{flex-shrink:0;margin-top:2px;opacity:.8}
.address p{font-size:.875rem;opacity:.9}
.footer-disclaimer{border-top:1px solid rgba(255,255,255,.2);padding-top:32px;margin-bottom:24px}
.footer-disclaimer p{text-align:center;font-size:.75rem;opacity:.75}
.footer-bottom{border-top:1px solid rgba(255,255,255,.2);padding-top:24px;text-align:center}
.footer-bottom p{font-size:.875rem;opacity:.75}

/* ===================================================
   DISCLAIMER BOX (sub-pages)
   =================================================== */
.disclaimer-box{background:oklch(0.35 0.15 260 / 0.05);border:1px solid oklch(0.35 0.15 260 / 0.2);border-radius:var(--radius-lg);padding:32px}
.disclaimer-box h3{font-size:1.25rem;font-weight:700;color:var(--primary);margin-bottom:16px}
.disclaimer-box p{color:var(--muted-fg);font-size:.875rem;line-height:1.7}
.disclaimer-amber{padding:16px;background:#fffbeb;border:1px solid #fde68a;border-radius:var(--radius-md);font-size:.875rem;color:#78350f}
.disclaimer-amber .disclaimer-title{font-weight:500;margin-bottom:4px}

/* ===================================================
   CONTACT PAGE
   =================================================== */
.contact-info-box{background:oklch(0.35 0.15 260 / 0.05);border:1px solid oklch(0.35 0.15 260 / 0.2);border-radius:var(--radius-lg);padding:24px;margin-bottom:24px}
.contact-muted-box{background:oklch(0.92 0.002 260 / 0.5);border-radius:var(--radius-md);padding:16px;font-size:.875rem;color:var(--muted-fg);margin-bottom:32px}
.form-label{display:block;font-size:.875rem;font-weight:500;margin-bottom:4px;color:var(--fg)}
.form-input,.form-textarea{display:block;width:100%;padding:8px 12px;font-size:.875rem;font-family:inherit;border:1px solid var(--border);border-radius:var(--radius-md);background:#fff;color:var(--fg);transition:border-color .2s}
.form-input:focus,.form-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px oklch(0.35 0.15 260 / 0.1)}
.form-textarea{min-height:120px;resize:vertical}

/* ===================================================
   SHARE BUTTONS
   =================================================== */
.share-buttons{display:flex;gap:12px;align-items:center}
.share-label{font-size:.875rem;font-weight:600;color:var(--muted-fg)}
.share-icons{display:flex;gap:8px}
.share-icon{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;border:1px solid var(--border);color:var(--muted-fg);transition:color .2s,background .2s}
.share-icon:hover{background:var(--muted-light)}
.share-icon-fb:hover{color:#2563eb}
.share-icon-tw:hover{color:#60a5fa}
.share-icon-line:hover{color:#22c55e}

/* ===================================================
   KNOWLEDGE / ARTICLE CARDS
   =================================================== */
.article-meta{display:flex;flex-wrap:wrap;gap:12px;font-size:.875rem;color:var(--muted-fg)}
.article-meta-item{display:flex;align-items:center;gap:4px}
.article-video{margin-bottom:16px;border-radius:var(--radius-xl);overflow:hidden;border:1px solid rgba(0,0,0,.1);box-shadow:var(--shadow-sm);aspect-ratio:16/9;background:#000}
.article-video img{width:100%;height:100%;object-fit:cover}
.article-footer{display:flex;align-items:center;justify-content:space-between;padding-top:16px;border-top:1px solid var(--border)}
.read-more{color:var(--primary);font-weight:600;font-size:.875rem;background:none;border:none;cursor:pointer;font-family:inherit}
.read-more:hover{text-decoration:underline}

/* ===================================================
   RESPONSIVE TWEAKS
   =================================================== */
@media(max-width:639px){
  .hero-buttons{flex-direction:column}
  .hero-buttons .btn{width:100%}
  .service-tags{flex-direction:column;align-items:stretch}
  .cta-buttons{flex-direction:column;align-items:stretch}
  .cta-buttons .btn{width:100%}
  .grid-2-responsive{grid-template-columns:1fr!important}
}

/* Services CTA button */
.services-cta{text-align:center;margin-top:8px}

/* Card service divider */
.card-divider{border-top:1px solid var(--border);padding-top:16px;margin-top:0}