/* =========================================================
   SignTool v2.0 — Utiliti Tandatangan Digital
   Stylesheet utama (Bahasa Melayu, responsif)
   ========================================================= */

:root{
  --navy:#0f1b2d;
  --navy-2:#14243c;
  --navy-3:#1d3355;
  --cyan:#22d3ee;
  --cyan-dark:#0891b2;
  --cyan-soft:#e0f7fc;
  --ink:#0f172a;
  --muted:#5b6b82;
  --line:#e4e9f1;
  --bg:#f7fafc;
  --card:#ffffff;
  --radius:16px;
  --shadow:0 12px 30px rgba(15,27,45,.08);
  --shadow-lg:0 24px 50px rgba(15,27,45,.16);
  --font:'Segoe UI',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
h1,h2,h3,h4{line-height:1.2;font-weight:800}

.container{width:min(1140px,100% - 32px);margin-inline:auto}

/* ---------- Butang ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:12px;padding:12px 22px;border:2px solid transparent;cursor:pointer;transition:all .2s ease;font-family:inherit;font-size:15px;line-height:1}
.btn-cyan{background:var(--cyan);color:#04222b}
.btn-cyan:hover{background:#3fddf3;transform:translateY(-2px);box-shadow:0 10px 24px rgba(34,211,238,.45)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-3);transform:translateY(-2px);box-shadow:0 12px 26px rgba(15,27,45,.3)}
.btn-outline{background:transparent;color:var(--navy);border-color:var(--navy)}
.btn-outline:hover{background:var(--navy);color:#fff}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-ghost{background:#eef5f8;color:var(--cyan-dark)}
.btn-ghost:hover{background:#e0f0f5}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(15,27,45,.97);backdrop-filter:blur(8px);border-bottom:1px solid rgba(255,255,255,.06)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700}
.brand-logo{width:40px;height:40px;border-radius:50%;object-fit:cover;background:#fff}
.brand-text{font-size:18px;letter-spacing:.2px}
.brand-text strong{color:var(--cyan)}
.site-nav{display:flex;align-items:center;gap:4px}
.nav-link{color:#cbd5e1;padding:9px 13px;border-radius:9px;font-size:15px;font-weight:500;transition:.15s}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-link.active{color:#fff;background:rgba(34,211,238,.16)}
.nav-back{color:var(--cyan)!important;font-weight:600}
.nav-cta{margin-left:8px}
.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:#fff;border-radius:2px;transition:.2s}

/* ---------- Hero ---------- */
.hero{background:radial-gradient(1200px 500px at 20% -10%,#1d3355 0%,transparent 60%),linear-gradient(160deg,var(--navy) 0%,var(--navy-2) 60%,var(--navy-3) 100%);color:#fff;padding:88px 0 96px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(34,211,238,.14);border:1px solid rgba(34,211,238,.35);color:var(--cyan);font-size:13px;font-weight:600;padding:7px 14px;border-radius:999px;margin-bottom:20px}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);margin-bottom:18px}
.hero h1 .hl{color:var(--cyan)}
.hero p.lead{color:#cbd5e1;font-size:18px;max-width:520px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;color:#94a3b8;font-size:14px}
.hero-meta span{display:flex;align-items:center;gap:7px}
.hero-art{position:relative;display:flex;justify-content:center;align-items:center}
.hero-logo{width:min(320px,70%);border-radius:50%;box-shadow:0 30px 80px rgba(0,0,0,.45);animation:float 5s ease-in-out infinite}
.hero-ring{position:absolute;inset:0;border:2px dashed rgba(34,211,238,.3);border-radius:50%;animation:spin 24s linear infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-16px)}}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- Bahagian umum ---------- */
.section{padding:72px 0}
.section.alt{background:#fff}
.section-head{max-width:640px;margin-bottom:40px}
.section-head.center{margin-inline:auto;text-align:center}
.eyebrow{display:inline-block;color:var(--cyan-dark);font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:1.5px;margin-bottom:10px}
.section-head h2{font-size:clamp(1.6rem,3.4vw,2.4rem);margin-bottom:12px}
.section-head p{color:var(--muted);font-size:16px}
/* ---------- Kad ciri ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:.25s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.card .ico{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;font-size:26px;margin-bottom:16px;background:var(--cyan-soft);color:var(--cyan-dark)}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}

/* ---------- Langkah / panduan ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
.step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow)}
.step .num{width:44px;height:44px;border-radius:12px;background:var(--navy);color:var(--cyan);display:grid;place-items:center;font-weight:800;font-size:20px;margin-bottom:14px}
.step h3{font-size:17px;margin-bottom:8px}
.step p{color:var(--muted);font-size:15px}
.step-list{list-style:none;margin-top:16px}
.step-list li{position:relative;padding-left:28px;margin-bottom:10px;color:var(--muted);font-size:15px}
.step-list li::before{content:"✓";position:absolute;left:0;top:0;color:var(--cyan-dark);font-weight:800}

/* ---------- Muat turun ---------- */
.dl-hero{background:linear-gradient(160deg,var(--navy),var(--navy-3));color:#fff;padding:64px 0;text-align:center}
.dl-hero h1{font-size:clamp(1.8rem,4vw,2.6rem);margin-bottom:14px}
.dl-hero p{color:#cbd5e1;max-width:640px;margin:0 auto 26px}
.dl-card{display:grid;grid-template-columns:auto 1fr auto;gap:20px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-lg)}
.dl-card .dl-icon{width:64px;height:64px;border-radius:16px;background:var(--cyan-soft);display:grid;place-items:center;font-size:32px;color:var(--cyan-dark)}
.dl-card h3{font-size:20px;margin-bottom:4px}
.dl-card .ver{color:var(--muted);font-size:14px}
.dl-card .meta{display:flex;flex-wrap:wrap;gap:14px;margin-top:8px;color:var(--muted);font-size:13px}
.dl-card .meta span{display:flex;align-items:center;gap:6px}
.req{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:20px}
.req-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.req-box h3{font-size:16px;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.req-box li{position:relative;padding-left:22px;margin-bottom:7px;color:var(--muted);font-size:14px}
.req-box li::before{content:"•";position:absolute;left:4px;color:var(--cyan-dark);font-weight:800}
.changelog{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;margin-top:20px}
.changelog h3{margin-bottom:16px}
.chg-item{display:flex;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.chg-item:last-child{border-bottom:0}
.chg-item .tag{flex:none;background:var(--cyan-soft);color:var(--cyan-dark);font-weight:700;font-size:13px;padding:4px 12px;border-radius:999px;height:fit-content}
.chg-item p{color:var(--muted);font-size:14px}
/* ---------- Panduan halaman ---------- */
.guide-wrap{max-width:760px;margin-inline:auto}
.guide-block{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;margin-bottom:22px;box-shadow:var(--shadow)}
.guide-block .g-num{display:inline-flex;width:38px;height:38px;border-radius:10px;background:var(--navy);color:var(--cyan);font-weight:800;align-items:center;justify-content:center;margin-bottom:12px}
.guide-block h3{font-size:19px;margin-bottom:8px}
.guide-block p{color:var(--muted);font-size:15px}
.guide-block ol,.guide-block ul{margin:12px 0 0 20px}
.guide-block li{margin-bottom:8px;color:var(--muted);font-size:15px}
.code{background:var(--navy);color:#a5f3fc;border-radius:10px;padding:14px 16px;font-family:Consolas,'Courier New',monospace;font-size:13px;overflow-x:auto;margin-top:12px;white-space:pre}

/* ---------- FAQ ---------- */
.faq-list{max-width:760px;margin-inline:auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;background:none;border:0;text-align:left;padding:20px 22px;font-family:inherit;font-size:16px;font-weight:700;color:var(--ink);cursor:pointer}
.faq-q .plus{flex:none;width:26px;height:26px;border-radius:8px;background:var(--cyan-soft);color:var(--cyan-dark);display:grid;place-items:center;font-weight:800;transition:.25s}
.faq-item.open .plus{transform:rotate(45deg);background:var(--navy);color:var(--cyan)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 22px 20px;color:var(--muted);font-size:15px}
/* ---------- Hubungi ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:28px;align-items:start}
.contact-info{display:grid;gap:16px}
.info-card{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:var(--shadow)}
.info-card .ico{flex:none;width:46px;height:46px;border-radius:12px;background:var(--cyan-soft);color:var(--cyan-dark);display:grid;place-items:center;font-size:22px}
.info-card h3{font-size:16px;margin-bottom:4px}
.info-card p,.info-card a{color:var(--muted);font-size:14px;word-break:break-word}
.info-card a:hover{color:var(--cyan-dark)}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.form-row{margin-bottom:16px}
.form-row label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}
.form-row input,.form-row textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-family:inherit;font-size:15px;color:var(--ink);transition:.15s}
.form-row input:focus,.form-row textarea:focus{outline:none;border-color:var(--cyan-dark);box-shadow:0 0 0 3px rgba(34,211,238,.2)}
.form-row textarea{min-height:130px;resize:vertical}
.form-note{font-size:13px;color:var(--muted);margin-top:12px;text-align:center}

/* ---------- Tentang / logo syarikat ---------- */
.company-card{display:flex;gap:22px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.company-logo{width:120px;flex:none}
.company-card h3{font-size:19px;margin-bottom:6px}
.company-card p{color:var(--muted);font-size:15px;max-width:560px}

/* ---------- CTA akhir ---------- */
.cta-band{background:linear-gradient(160deg,var(--navy),var(--navy-3));color:#fff;border-radius:24px;padding:52px 40px;text-align:center}
.cta-band h2{font-size:clamp(1.5rem,3vw,2.2rem);margin-bottom:12px}
.cta-band p{color:#cbd5e1;margin-bottom:24px}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy);color:#cbd5e1;margin-top:72px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding:56px 0 40px}
.footer-logo{width:150px;margin-bottom:16px;background:#fff;border-radius:10px;padding:8px}
.footer-brand p{font-size:14px;color:#94a3b8;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-col a{display:block;color:#94a3b8;font-size:14px;margin-bottom:10px;transition:.15s}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:13px;color:#64748b}

/* ---------- Kembali ke atas ---------- */
.to-top{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:12px;background:var(--navy);color:var(--cyan);border:0;font-size:20px;cursor:pointer;opacity:0;pointer-events:none;transform:translateY(10px);transition:.25s;z-index:90}
.to-top.show{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:var(--navy-3)}

/* ---------- Animasi reveal ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
/* ---------- Responsif ---------- */
@media(max-width:920px){
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero p.lead{margin-inline:auto}
  .hero-actions,.hero-meta{justify-content:center}
  .hero-art{order:-1}
  .hero-logo{width:220px}
  .cards,.steps{grid-template-columns:1fr 1fr}
  .dl-card{grid-template-columns:1fr;text-align:center}
  .dl-card .dl-icon{margin-inline:auto}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .cards,.steps,.req{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .nav-toggle{display:flex}
  .site-nav{position:fixed;inset:72px 0 auto 0;background:var(--navy-2);flex-direction:column;align-items:stretch;padding:16px;gap:8px;border-bottom:1px solid rgba(255,255,255,.08);transform:translateY(-140%);transition:.3s}
  .site-nav.open{transform:translateY(0)}
  .nav-link{padding:14px;border-radius:10px}
  .nav-cta{margin-left:0}
  .company-card{flex-direction:column;text-align:center}
  .company-logo{margin-inline:auto}
}