/* ===== SIPTrunk2AI — style.css ===== */
:root{
  --bg:#0b1020;
  --bg-2:#101832;
  --card:#151f3d;
  --card-2:#1a2547;
  --text:#e8ecf8;
  --muted:#9aa6c8;
  --accent:#22d3ee;
  --accent-2:#3b82f6;
  --ok:#34d399;
  --border:rgba(148,163,220,.18);
  --radius:16px;
  --shadow:0 10px 40px rgba(0,0,0,.35);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
.container{max-width:1140px;margin:0 auto;padding:0 20px}
a{color:var(--accent);text-decoration:none}
h1,h2,h3{line-height:1.2}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(11,16,32,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--text)}
.brand-mark{font-size:1.5rem}
.brand .accent{color:var(--accent)}
.main-nav{display:flex;align-items:center;gap:26px}
.main-nav a{color:var(--muted);font-weight:500;font-size:.95rem;transition:color .2s}
.main-nav a:hover{color:var(--text)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;flex-direction:column;gap:5px;padding:6px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--text);border-radius:2px}

/* Buttons */
.btn{display:inline-block;padding:14px 28px;border-radius:12px;font-weight:700;font-size:1rem;border:0;cursor:pointer;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#04121f !important;box-shadow:0 6px 24px rgba(34,211,238,.35)}
.btn-outline{border:1.5px solid var(--border);color:var(--text);background:transparent}
.btn-sm{padding:9px 18px;font-size:.9rem;border-radius:10px}
.btn-block{width:100%}

/* Hero */
.hero{padding:90px 0 70px;text-align:center;background:
  radial-gradient(800px 400px at 20% -10%,rgba(59,130,246,.25),transparent),
  radial-gradient(700px 400px at 85% 0%,rgba(34,211,238,.18),transparent)}
.hero-badge{display:inline-block;padding:8px 18px;border:1px solid var(--border);border-radius:999px;color:var(--accent);font-weight:600;font-size:.9rem;margin-bottom:24px;background:rgba(34,211,238,.07)}
.hero h1{font-size:clamp(2.2rem,5.5vw,3.8rem);font-weight:900;margin-bottom:20px}
.gradient-text{background:linear-gradient(90deg,var(--accent),var(--accent-2),#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{color:var(--muted);font-size:1.15rem;max-width:760px;margin:0 auto 34px}
.hero-ctas{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:60px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;max-width:900px;margin:0 auto}
.stat{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px 12px}
.stat-num{font-size:2rem;font-weight:900;background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-label{color:var(--muted);font-size:.9rem;margin-top:4px}

/* Sections */
section{padding:80px 0}
.section-title{text-align:center;font-size:clamp(1.7rem,3.5vw,2.4rem);font-weight:800;margin-bottom:14px}
.section-sub{text-align:center;color:var(--muted);max-width:700px;margin:0 auto 48px;font-size:1.05rem}

/* Breakthrough */
.breakthrough{padding-top:20px}
.breakthrough-card{background:linear-gradient(135deg,rgba(37,211,102,.10),rgba(34,211,238,.08));border:1px solid rgba(52,211,153,.35);border-radius:22px;padding:48px;text-align:center;box-shadow:var(--shadow)}
.breakthrough-tag{display:inline-block;background:rgba(52,211,153,.15);color:var(--ok);font-weight:700;padding:6px 16px;border-radius:999px;font-size:.85rem;margin-bottom:18px}
.breakthrough-card h2{font-size:clamp(1.5rem,3vw,2.1rem);margin-bottom:14px}
.breakthrough-card p{color:var(--muted);max-width:720px;margin:0 auto 22px}
.check-list{list-style:none;display:inline-block;text-align:left;margin-bottom:28px;color:var(--text)}
.check-list li{padding:5px 0}

/* Cards */
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:transform .2s,border-color .2s}
.card:hover{transform:translateY(-5px);border-color:rgba(34,211,238,.5)}
.card-icon{font-size:2rem;margin-bottom:14px}
.card h3{font-size:1.12rem;margin-bottom:10px}
.card p{color:var(--muted);font-size:.94rem}

/* Founder */
.founder{background:var(--bg-2)}
.founder-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:36px;align-items:start}
.founder-main{background:var(--card);border:1px solid var(--border);border-radius:22px;padding:38px;text-align:center}
.founder-avatar{width:96px;height:96px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:900;color:#04121f;margin:0 auto 18px}
.founder-main h3{font-size:1.5rem}
.founder-role{color:var(--accent);font-weight:700;margin:4px 0 12px}
.founder-tagline{color:var(--muted);font-size:.92rem;margin-bottom:12px}
.founder-main p{color:var(--muted);font-size:.96rem;margin-bottom:12px}
.vision{font-style:italic;color:var(--text) !important;border-left:3px solid var(--accent);padding-left:14px;text-align:left}
.founder-side{display:flex;flex-direction:column;gap:14px}
.achievement{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px 20px;display:flex;flex-direction:column;gap:4px}
.achievement span{color:var(--muted);font-size:.92rem}
.expertise{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px}
.expertise h4{margin-bottom:12px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags span{background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.3);color:var(--accent);padding:5px 12px;border-radius:999px;font-size:.82rem;font-weight:600}

/* Testimonials */
.quote-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px}
.quote-card p{color:var(--text);font-style:italic;margin-bottom:16px}
.quote-by{color:var(--accent);font-weight:600;font-size:.9rem}
.trusted{text-align:center;margin-top:44px;color:var(--muted)}
.trusted span{font-weight:700;color:var(--text)}

/* Contact */
.contact{background:var(--bg-2)}
.contact-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:36px;align-items:start}
.contact-info{display:flex;flex-direction:column;gap:16px}
.contact-item{display:flex;gap:14px;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px 20px;align-items:center}
.ci-icon{font-size:1.5rem}
.contact-item strong{display:block;font-size:.85rem;color:var(--muted);font-weight:600}
.contact-item a{font-weight:700;color:var(--text)}
.contact-item a:hover{color:var(--accent)}
.contact-form{background:var(--card);border:1px solid var(--border);border-radius:22px;padding:32px;display:flex;flex-direction:column;gap:14px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-form input,.contact-form select,.contact-form textarea{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:13px 15px;color:var(--text);font-family:inherit;font-size:.95rem}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none;border-color:var(--accent)}
.contact-form ::placeholder{color:#5f6c92}
.hp{position:absolute !important;left:-9999px !important;opacity:0}
.form-note{min-height:22px;font-size:.92rem;text-align:center}
.form-note .ok{color:var(--ok)}
.form-note .err{color:#f87171}

/* FAQ */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:0 22px}
.faq-item summary{cursor:pointer;font-weight:700;padding:18px 0;list-style:none;position:relative;padding-right:32px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';position:absolute;right:4px;top:50%;transform:translateY(-50%);color:var(--accent);font-size:1.4rem;font-weight:400}
.faq-item[open] summary::after{content:'−'}
.faq-item p{color:var(--muted);padding-bottom:20px;font-size:.96rem}

/* Footer */
.site-footer{border-top:1px solid var(--border);background:#080d1c;padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;padding-bottom:40px}
.footer-grid p{color:var(--muted);font-size:.92rem;margin-top:12px}
.powered{font-size:.82rem !important;opacity:.8}
.footer-grid h4{margin-bottom:14px}
.footer-grid a{display:block;color:var(--muted);padding:4px 0;font-size:.94rem}
.footer-grid a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--border);text-align:center;color:var(--muted);font-size:.85rem;padding:20px}

/* Responsive */
@media(max-width:900px){
  .cards-grid{grid-template-columns:repeat(2,1fr)}
  .founder-grid,.contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  .cards-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--bg-2);flex-direction:column;padding:20px;gap:16px;border-bottom:1px solid var(--border)}
  .main-nav.open{display:flex}
  .nav-toggle{display:flex}
  .breakthrough-card{padding:32px 22px}
}