/* =========================================================
   EV Power — สไตล์ชีตหลัก (ธีม Charger: ดำ / เขียวสด)
   แก้สีหลักได้ที่ตัวแปร --brand ด้านล่าง
   ========================================================= */

:root{
  --brand:#95c92c;        /* เขียวสด (accent หลัก) */
  --brand-dark:#79a324;   /* เขียวเข้ม (hover) */
  --accent:#41cb5a;
  --ink:#0e0e0e;          /* ดำเกือบสนิท (หัวข้อ) */
  --ink-2:#303030;        /* เทาเข้ม (เนื้อความ) */
  --muted:#7a7a7a;
  --line:#e6e8e6;
  --bg:#ffffff;
  --bg-soft:#f4f5f4;      /* เทาอ่อน */
  --bg-dark:#0d0d0d;      /* ดำ (header/footer) */
  --radius:14px;
  --radius-btn:7px;
  --shadow:0 10px 34px rgba(14,14,14,.08);
  --shadow-lg:0 20px 55px rgba(14,14,14,.14);
  --maxw:1200px;
  --font:"Inter","Noto Sans Thai","Prompt",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  color:var(--ink-2);
  background:var(--bg);
  line-height:1.7;
  font-size:16.5px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{line-height:1.15;color:var(--ink);font-weight:800;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(2.3rem,5.2vw,4rem);line-height:1.05}
h2{font-size:clamp(1.7rem,3.4vw,2.7rem)}
h3{font-size:1.3rem;font-weight:700}
p{margin:0 0 1em}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.section{padding:88px 0}
.section-soft{background:var(--bg-soft)}
.center{text-align:center}
.lead{font-size:1.12rem;color:var(--ink-2);max-width:720px}
.center .lead{margin-left:auto;margin-right:auto}
.eyebrow{
  display:inline-flex;align-items:center;gap:.5em;color:var(--brand);font-weight:700;
  letter-spacing:.12em;font-size:.9rem;text-transform:uppercase;margin-bottom:1em
}
.eyebrow::before{
  content:"";width:1.05em;height:1.05em;flex:none;background:currentColor;
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M13 2 4 14h7l-1 8 9-12h-7z'/%3E%3C/svg%3E") center/contain no-repeat;
          mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M13 2 4 14h7l-1 8 9-12h-7z'/%3E%3C/svg%3E") center/contain no-repeat;
}
.muted{color:var(--muted)}

/* ---------- ไอคอน SVG ---------- */
.i{display:inline-flex;align-items:center;justify-content:center;line-height:0}
.ic-svg{width:1em;height:1em;vertical-align:-.15em;flex:none}
.float-contact .ic-svg{width:auto;height:auto}

/* ---------- ปุ่ม ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5em;
  padding:.85em 1.7em;border-radius:var(--radius-btn);font-weight:700;font-size:1rem;
  border:2px solid transparent;cursor:pointer;transition:.18s;text-decoration:none;line-height:1.1;white-space:nowrap
}
.btn::after{content:"»";font-weight:700;opacity:.9}
.btn-ghost::after,.btn-line::after{content:""}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px)}
.btn-accent{background:var(--ink);color:#fff}
.btn-accent:hover{background:#000;color:#fff;transform:translateY(-2px)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--brand);color:var(--ink)}
.btn-line{background:#5d7d1c;color:#fff}
.btn-line:hover{background:#95c92c;color:#fff}

/* ---------- Header (ดำ) ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:var(--bg-dark);
  border-bottom:1px solid rgba(255,255,255,.06)
}
.nav{display:flex;align-items:center;justify-content:space-between;height:80px;gap:16px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:1.35rem;color:#fff;letter-spacing:-.02em;white-space:nowrap}
.brand:hover{color:#fff}
.brand .logo{
  width:40px;height:40px;border-radius:9px;display:grid;place-items:center;
  background:var(--brand);color:#0d0d0d;font-size:1.25rem
}
.brand .logo-img{height:52px;width:auto;max-width:220px;object-fit:contain;display:block}
.nav-links{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.nav-links a{
  color:#c9ccc9;font-weight:500;padding:.55em .9em;border-radius:8px;font-size:.98rem;white-space:nowrap
}
.nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.07)}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-cta .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.25)}
.nav-cta .btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.nav-toggle{display:none;background:none;border:0;font-size:1.7rem;cursor:pointer;color:#fff}

/* ---------- Hero (รูปพื้นหลัง) ---------- */
/* ใส่รูปพื้นหลังที่ assets/img/hero-bg.jpg — ถ้ายังไม่มีไฟล์ จะแสดงพื้นเข้มแทน */
.hero{
  position:relative;overflow:hidden;
  background-color:#0a1310;
  background-image:
    linear-gradient(90deg, rgba(7,13,10,.95) 0%, rgba(7,13,10,.78) 38%, rgba(7,13,10,.38) 70%, rgba(7,13,10,.12) 100%),
    url("../img/hero-bg.jpg");
  background-size:cover, cover;
  background-position:center, center right;
  background-repeat:no-repeat, no-repeat;
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding:96px 0}
.hero .eyebrow{color:var(--brand)}
.hero h1{color:#fff}
.hero h1 .hl{color:var(--brand)}
.hero p{color:#d7e4dc;font-size:1.18rem;max-width:560px}
.hero .btn-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.hero .btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.45)}
.hero .btn-ghost:hover{border-color:var(--brand);color:#fff;background:rgba(255,255,255,.14)}
.hero-badges{display:flex;gap:26px;flex-wrap:wrap;margin-top:38px}
.hero-badge{display:flex;gap:9px;align-items:center;color:var(--ink);font-weight:600;font-size:.98rem}
.hero-badge .ic{color:var(--brand);font-size:1.3rem;font-weight:800}
.hero .hero-badge{color:#eafaf1}
.hero-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:32px;box-shadow:var(--shadow)
}
.hero-card h3{color:var(--ink);margin-bottom:18px}
.hero-card ul{list-style:none;margin:0;padding:0;display:grid;gap:16px}
.hero-card li{display:flex;gap:13px;color:var(--ink-2);align-items:flex-start}
.hero-card li span:first-child{font-size:1.3rem}
.hero-card li b{color:var(--ink)}

/* หัวหน้าเพจ (หน้ารอง) — รองรับรูปพื้นหลัง
   ใส่รูปเฉพาะหน้าได้ที่แท็ก section เช่น:
   <section class="page-hero" style="--hero-img:url('assets/img/hero-products.jpg')">
   ถ้ายังไม่มีไฟล์รูป จะแสดงพื้นสีเข้มแทนให้อัตโนมัติ */
.page-hero{
  position:relative;overflow:hidden;
  background-color:#0a1310;
  background-image:
    linear-gradient(90deg, rgba(7,13,10,.93) 0%, rgba(7,13,10,.74) 45%, rgba(7,13,10,.45) 100%),
    var(--hero-img, none);
  background-size:cover, cover;
  background-position:center, center right;
  background-repeat:no-repeat, no-repeat;
}
.page-hero .container{position:relative;z-index:2;padding:80px 0}
/* วิดีโอพื้นหลัง hero */
.page-hero.has-video{background-image:none;background-color:#0a1310}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;border:0}
.page-hero.has-video::after{content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg, rgba(7,13,10,.9) 0%, rgba(7,13,10,.7) 45%, rgba(7,13,10,.42) 100%)}

/* ส่วนเนื้อหาที่มีวิดีโอเป็นพื้นหลัง (เช่น "ทำไมต้องเลือกเรา") */
.video-section{position:relative;overflow:hidden;background:#0a1310}
.video-section::after{content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg, rgba(7,13,10,.9) 0%, rgba(7,13,10,.78) 50%, rgba(7,13,10,.66) 100%)}
.video-section .container{position:relative;z-index:2}
.video-section .eyebrow{color:var(--brand)}
.video-section h2{color:#fff}
.video-section .lead{color:#d7e4dc}
.video-section .prose li{color:#eafaf1}
.page-hero h1{color:#fff}
.page-hero .eyebrow{color:var(--brand)}
.page-hero p{color:#d7e4dc;max-width:660px;font-size:1.12rem}

/* ---------- แถบพื้นที่ให้บริการ (ดำ) ---------- */
.areabar{background:var(--ink);color:#c9ccc9;padding:16px 0}
.areabar .container{display:flex;gap:10px 26px;flex-wrap:wrap;justify-content:center;align-items:center;font-weight:500}
.areabar b{color:var(--brand)}

/* ---------- การ์ด / กริด ---------- */
.grid{display:grid;gap:26px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:32px 28px;transition:.2s;height:100%;position:relative;overflow:hidden
}
.card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:#d4d8d4}
.card .ic{
  width:56px;height:56px;border-radius:12px;display:grid;place-items:center;
  background:var(--bg-soft);color:var(--ink);font-size:1.6rem;margin-bottom:18px;transition:.2s
}
.card:hover .ic{background:var(--brand);color:#fff}
.card h3{margin-bottom:.45em}
.card p{color:var(--ink-2);margin:0}

/* ---------- การ์ดสินค้า ---------- */
.product-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:.2s
}
.product-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:#d4d8d4}
.product-media{
  aspect-ratio:4/3;background:var(--bg-soft);position:relative;overflow:hidden;display:grid;place-items:center
}
.product-media img{width:100%;height:100%;object-fit:cover}
.product-media .ph{font-size:3.2rem;opacity:.35}
.tag{
  position:absolute;top:13px;left:13px;background:var(--brand);color:#fff;
  font-size:.76rem;font-weight:700;padding:.35em .8em;border-radius:6px;letter-spacing:.02em
}
.tag.ac{background:#0e0e0e}.tag.dc{background:var(--brand)}.tag.pkg{background:#2563eb}
.product-body{padding:22px;display:flex;flex-direction:column;gap:9px;flex:1}
.product-body h3{font-size:1.18rem;margin:0}
.product-spec{display:flex;flex-wrap:wrap;gap:6px;margin:4px 0}
.chip{background:var(--bg-soft);color:var(--ink-2);font-size:.8rem;padding:.3em .7em;border-radius:6px;border:1px solid var(--line);font-weight:500}
.product-price{font-weight:800;color:var(--ink);font-size:1.08rem;margin-top:auto}
.product-body .btn{margin-top:12px;justify-content:center}

/* ---------- ตัวกรอง ---------- */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px;justify-content:center}
.filter-btn{
  padding:.6em 1.3em;border-radius:var(--radius-btn);border:1.5px solid var(--line);
  background:#fff;color:var(--ink-2);font-weight:600;cursor:pointer;transition:.15s;font-size:.95rem;font-family:inherit
}
.filter-btn:hover{border-color:var(--brand);color:var(--ink)}
.filter-btn.active{background:var(--brand);color:#fff;border-color:var(--brand)}

/* ---------- ขั้นตอน ---------- */
.steps{display:grid;gap:24px;counter-reset:step}
.step{display:flex;gap:20px;align-items:flex-start}
.step .num{
  flex:0 0 auto;width:48px;height:48px;border-radius:12px;
  background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800;font-size:1.15rem
}
.step .num::before{counter-increment:step;content:counter(step)}
.step h3{margin:.15em 0 .25em}
.step p{margin:0;color:var(--ink-2)}

/* ---------- บทความ ---------- */
.article-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:.2s
}
.article-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:#d4d8d4}
.article-media{aspect-ratio:16/9;background:var(--bg-soft);display:grid;place-items:center;overflow:hidden}
.article-media img{width:100%;height:100%;object-fit:cover}
.article-media .ph{font-size:2.8rem;opacity:.35}
.article-body{padding:24px;display:flex;flex-direction:column;gap:11px;flex:1}
.article-meta{font-size:.85rem;color:var(--muted);display:flex;gap:12px;flex-wrap:wrap;font-weight:500}
.article-body h3{font-size:1.22rem;margin:0}
.article-body p{color:var(--ink-2);margin:0}
.article-body .read{margin-top:auto;color:var(--brand-dark);font-weight:700}

/* ---------- ผลงานการติดตั้ง ---------- */
.work-card{
  margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:.2s
}
.work-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:#d4d8d4}
.work-media{aspect-ratio:4/3;background:var(--bg-soft);position:relative;overflow:hidden;display:grid;place-items:center}
.work-media img{width:100%;height:100%;object-fit:cover;transition:.35s}
.work-card:hover .work-media img{transform:scale(1.06)}
.work-media .ph{font-size:3rem;opacity:.35}
.work-body{padding:22px;display:flex;flex-direction:column;gap:9px}
.work-body h3{font-size:1.15rem;margin:0}
.work-body p{color:var(--ink-2);margin:0}

/* ---------- เนื้อหาบทความเดี่ยว ---------- */
.article-hero{background:var(--bg-soft);padding:64px 0}
.prose{max-width:780px;margin:0 auto}
.prose p,.prose li{color:var(--ink-2)}
.prose img{border-radius:12px;margin:1.6em 0}
.prose h2{margin-top:1.7em;color:var(--ink)}
.prose h3{margin-top:1.4em}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1em}
.prose li{margin-bottom:.45em}
.prose blockquote{
  border-left:4px solid var(--brand);background:var(--bg-soft);
  margin:1.6em 0;padding:1.1em 1.4em;border-radius:0 10px 10px 0;color:var(--ink);font-weight:500
}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:10px;margin-bottom:12px;overflow:hidden;background:#fff;transition:.2s}
.faq-item.open{border-color:var(--brand)}
.faq-q{
  width:100%;text-align:left;background:none;border:0;padding:20px 24px;font-size:1.06rem;
  font-weight:700;color:var(--ink);cursor:pointer;display:flex;justify-content:space-between;gap:14px;align-items:center;font-family:inherit
}
.faq-q .arrow{transition:.2s;color:var(--brand);font-size:1.3rem;line-height:1}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;padding:0 24px}
.faq-item.open .faq-a{max-height:420px;padding:0 24px 20px}
.faq-a p{color:var(--ink-2);margin:0}

/* ---------- แถบ CTA ---------- */
.cta-band{
  background:var(--ink);color:#fff;border-radius:20px;
  padding:56px;text-align:center;margin:0 auto;position:relative;overflow:hidden
}
.cta-band::before{content:"";position:absolute;inset:0;
  background:radial-gradient(600px 300px at 85% -30%,rgba(65,203,90,.22),transparent 60%)}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{color:#fff}
.cta-band p{color:#c9ccc9;max-width:620px;margin:0 auto 26px}
.cta-band .btn-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.3)}
.cta-band .btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
/* CTA พร้อมฟอร์มขอใบเสนอราคา */
.cta-band.has-form{text-align:left;padding:44px}
.cta-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.cta-left h2{margin-bottom:.4em}
.cta-left p{margin:0 0 22px;max-width:none}
.cta-left .btn-row{justify-content:flex-start}
.cta-form{gap:14px}
.cta-form h3{color:var(--ink)}
.cta-form .form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:860px){
  .cta-form-grid{grid-template-columns:1fr;gap:28px}
  .cta-band.has-form{text-align:center}
  .cta-left .btn-row{justify-content:center}
  .cta-form{text-align:left}
}
@media (max-width:520px){
  .cta-form .form-row{grid-template-columns:1fr}
}

/* ---------- ฟอร์มติดต่อ ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.info-list{list-style:none;margin:0;padding:0;display:grid;gap:18px}
.info-list li{display:flex;gap:14px;align-items:flex-start}
.info-list .ic{
  flex:0 0 auto;width:48px;height:48px;border-radius:12px;background:var(--bg-soft);
  color:var(--ink);display:grid;place-items:center;font-size:1.3rem
}
.info-list b{display:block;color:var(--ink)}
.form{display:grid;gap:16px;background:#fff;border:1px solid var(--line);padding:32px;border-radius:var(--radius)}
.form label{font-weight:700;font-size:.95rem;display:block;margin-bottom:6px;color:var(--ink)}
.form input,.form select,.form textarea{
  width:100%;padding:.8em .95em;border:1.5px solid var(--line);border-radius:8px;
  font-family:inherit;font-size:1rem;color:var(--ink);background:#fff
}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--brand)}
.form textarea{min-height:120px;resize:vertical}
.form-note{border-radius:8px;font-weight:600;font-size:.95rem;line-height:1.5}
.form-note.ok{background:#e8f6ea;color:#1c7d33;border:1px solid #b7e2c0;padding:12px 14px}
.form-note.err{background:#fdeaea;color:#c0392b;border:1px solid #f3c0bc;padding:12px 14px}
.form-note.err a{color:#c0392b;text-decoration:underline;font-weight:700}

/* ---------- Footer (ดำ) ---------- */
.site-footer{background:var(--bg-dark);color:#9aa09a;padding:64px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:34px}
.site-footer h4{color:#fff;font-size:1.02rem;margin-bottom:16px;font-weight:700}
.site-footer a{color:#9aa09a;display:block;padding:4px 0}
.site-footer a:hover{color:var(--brand)}
.footer-brand .brand{color:#fff;margin-bottom:14px}
.footer-brand p{color:#7c827c;font-size:.95rem;max-width:310px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:40px;padding-top:22px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.9rem;color:#71776f}

/* ---------- Breadcrumb ---------- */
.breadcrumb{font-size:.9rem;color:var(--muted);padding:20px 0;font-weight:500}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-dark)}

/* ---------- ลอยติดต่อ ---------- */
.float-contact{position:fixed;right:20px;bottom:20px;z-index:60;display:flex;flex-direction:column;gap:11px}
.float-contact a{
  width:56px;height:56px;border-radius:50%;display:grid;place-items:center;color:#fff;
  font-size:1.5rem;box-shadow:var(--shadow-lg);transition:.2s
}
.float-contact a:hover{transform:scale(1.09);color:#fff}
.fc-line{background:#95c92c}
.fc-tel{background:var(--brand)}
.fc-fb{background:#1877f2}

/* ---------- ยูทิลิตี้ ---------- */
.mt-0{margin-top:0}.mb-0{margin-bottom:0}
.section-head{max-width:740px;margin:0 auto 52px}
.section-head.left{margin-left:0}
.empty-state{text-align:center;color:var(--muted);padding:60px 0}

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .hero-grid{grid-template-columns:1fr;padding:60px 0}
  .contact-grid,.footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
/* เมนูยุบเป็นแฮมเบอร์เกอร์ตั้งแต่แท็บเล็ตลงมา (กันเมนูล้นบรรทัด) */
@media (max-width:1024px){
  .nav-links{
    display:none;position:absolute;top:80px;left:0;right:0;background:var(--bg-dark);
    flex-direction:column;align-items:stretch;padding:12px;border-bottom:1px solid rgba(255,255,255,.08);gap:2px;z-index:50
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:.85em 1em}
  .nav-cta .btn-ghost{display:none}
  .nav-toggle{display:block}
}

@media (max-width:720px){
  .nav-cta .btn-primary{display:none}
  .nav-cta{gap:0}
  .hero{
    background-image:
      linear-gradient(180deg, rgba(7,13,10,.9) 0%, rgba(7,13,10,.72) 55%, rgba(7,13,10,.82) 100%),
      url("../img/hero-bg.jpg");
    background-position:center, center;
  }
  .grid-3,.grid-4,.grid-2,.contact-grid,.footer-grid{grid-template-columns:1fr}
  .section{padding:60px 0}
  .cta-band{padding:38px 24px}
  .areabar .container{justify-content:flex-start}
}