/* ═══════════════════════════════════════════════════════════════
   HYHUB — style.css  (Complete Design System v2)
   Dark / Light mode · Card accents · Micro-animations · Premium UI
   ═══════════════════════════════════════════════════════════════ */

/* ── Light theme tokens ───────────────────────────────────────── */
:root{
  --bg:#eef3f8;--bg-alt:#f7f9fc;
  --surface:#ffffffe8;--surface-solid:#fff;--surface-dark:#09162d;
  --text:#10203a;--text-secondary:#374151;--muted:#5f708d;
  --line:#10203a1a;--line-strong:#10203a2e;
  --accent:#146ef5;--accent-2:#ff6b4a;--accent-3:#14b8a6;--accent-4:#8b5cf6;
  --accent-soft:#146ef51f;--accent-2-soft:#ff6b4a1f;--accent-3-soft:#14b8a61f;--accent-4-soft:#8b5cf61f;
  --success:#15803d;--warning:#92400e;--danger:#dc2626;
  --radius-xl:32px;--radius-lg:24px;--radius-md:18px;--radius-sm:12px;
  --shadow:0 28px 70px #09162d1f;--shadow-soft:0 16px 32px #09162d14;--shadow-strong:0 32px 80px #09162d2e;
  --shadow-glow:0 0 40px #146ef528;
  --content:min(1180px,calc(100% - 2rem));--nav:92px;
  --glass-bg:rgba(255,255,255,0.72);--glass-border:rgba(16,32,58,0.08);
  --card-bg:linear-gradient(180deg,#fffffff5,#ffffffd1);
  --header-bg:#f7f9fcd6;--header-border:#10203a0f;
  --footer-bg:linear-gradient(180deg,#081327 0%,#09162d 100%);
  --hero-bg:radial-gradient(circle at top left,#146ef514,transparent 32%),radial-gradient(circle at top right,#ff6b4a1f,transparent 28%),linear-gradient(180deg,#f7f9fc 0%,var(--bg) 44%,#f8fbfe 100%);
  --body-glow-1:#146ef538;--body-glow-2:#ff6b4a33;
  color-scheme:light
}

/* ── Dark theme tokens ────────────────────────────────────────── */
[data-theme="dark"]{
  --bg:#0b1120;--bg-alt:#111827;
  --surface:#1e293bee;--surface-solid:#1e293b;--surface-dark:#0f172a;
  --text:#e2e8f0;--text-secondary:#cbd5e1;--muted:#94a3b8;
  --line:#ffffff1a;--line-strong:#ffffff2e;
  --accent:#3b82f6;--accent-2:#fb923c;--accent-3:#2dd4bf;--accent-4:#a78bfa;
  --accent-soft:#3b82f61f;--accent-2-soft:#fb923c1f;--accent-3-soft:#2dd4bf1f;--accent-4-soft:#a78bfa1f;
  --glass-bg:rgba(30,41,59,0.72);--glass-border:rgba(255,255,255,0.08);
  --card-bg:linear-gradient(180deg,#1e293bf5,#1e293bd1);
  --header-bg:rgba(15,23,42,0.86);--header-border:#ffffff0f;
  --footer-bg:linear-gradient(180deg,#020617 0%,#0b1120 100%);
  --hero-bg:radial-gradient(circle at top left,#3b82f614,transparent 32%),radial-gradient(circle at top right,#fb923c14,transparent 28%),linear-gradient(180deg,#0f172a 0%,var(--bg) 44%,#111827 100%);
  --body-glow-1:#3b82f620;--body-glow-2:#fb923c18;
  --shadow:0 28px 70px rgba(0,0,0,.4);--shadow-soft:0 16px 32px rgba(0,0,0,.3);--shadow-strong:0 32px 80px rgba(0,0,0,.5);
  --shadow-glow:0 0 40px #3b82f620;
  color-scheme:dark
}

/* ── Smooth theme transition ──────────────────────────────────── */
body,body *{transition:background-color .35s ease,color .25s ease,border-color .25s ease,box-shadow .35s ease}

/* ── Base ─────────────────────────────────────────────────────── */
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav) + 1rem)}
body{margin:0;min-height:100vh;font:16px/1.65 "Public Sans","Segoe UI",sans-serif;color:var(--text);background:var(--hero-bg);position:relative}
body::before,body::after{content:"";position:fixed;z-index:-2;width:34rem;aspect-ratio:1;border-radius:50%;filter:blur(72px);opacity:.32;pointer-events:none}
body::before{top:-10rem;left:-12rem;background:var(--body-glow-1)}
body::after{right:-10rem;bottom:-10rem;background:var(--body-glow-2)}
img{max-width:100%;display:block}a{color:inherit}button,input,select,textarea{font:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--accent-2);outline-offset:3px}

/* ── Shell + Header ───────────────────────────────────────────── */
.site-shell{width:var(--content);margin:0 auto}
.site-header{position:sticky;top:0;z-index:40;background:var(--header-bg);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--header-border)}
.nav-wrap{min-height:var(--nav);display:flex;align-items:center;justify-content:space-between;gap:1rem;position:relative}
.brand{display:flex;align-items:center;gap:.8rem;text-decoration:none;flex-shrink:0}.brand img{width:52px;height:52px;border-radius:0;object-fit:contain;background:transparent;box-shadow:none}.brand-copy{display:grid;gap:.15rem}.brand-name{font:700 1.3rem/1 "Space Grotesk","Segoe UI",sans-serif;letter-spacing:-.03em}.brand-tagline{color:var(--muted);font-size:.8rem;max-width:190px;line-height:1.35}

/* ── Mobile menu toggle ───────────────────────────────────────── */
.menu-toggle{display:none;width:52px;height:52px;padding:0;border:1px solid var(--line);border-radius:16px;background:var(--glass-bg);cursor:pointer;transition:.16s}.menu-toggle:hover{transform:translateY(-1px);box-shadow:var(--shadow-soft)}.menu-toggle span{display:block;width:22px;height:2px;border-radius:999px;background:var(--text);margin:5px auto}

/* ── Navigation ───────────────────────────────────────────────── */
.site-nav{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:.35rem}
.site-nav a{text-decoration:none;padding:.72rem .92rem;border-radius:999px;color:var(--muted);font-size:.96rem;font-weight:600;transition:.18s}
.site-nav a:hover,.site-nav a.is-active{color:var(--text);background:var(--surface);box-shadow:0 10px 24px #09162d14;transform:translateY(-1px)}
.nav-group{position:relative}.nav-trigger{display:inline-flex;align-items:center;gap:.38rem}.nav-trigger::after{content:"\25BE";font-size:.72rem;line-height:1}
.nav-menu{position:absolute;left:0;top:calc(100% + .55rem);display:none;min-width:280px;padding:.55rem;background:var(--surface-solid);border:1px solid var(--line);border-radius:22px;box-shadow:0 22px 44px #09162d1f;z-index:45}
.nav-menu a{display:block;padding:.7rem .82rem;border-radius:14px;white-space:nowrap}
.nav-group:hover .nav-menu,.nav-group:focus-within .nav-menu{display:grid;gap:.2rem}
.nav-cta{padding:.8rem 1.08rem!important;white-space:nowrap}
.site-main{padding:1.3rem 0 0}

/* ── Theme toggle button ──────────────────────────────────────── */
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:999px;border:1px solid var(--line);background:var(--glass-bg);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);cursor:pointer;font-size:1.15rem;line-height:1;transition:transform .18s,box-shadow .18s,background .25s;flex-shrink:0;padding:0}
.theme-toggle:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow)}
.theme-toggle .icon-sun,.theme-toggle .icon-moon{pointer-events:none}
.theme-toggle svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
[data-theme="dark"] .theme-toggle .icon-sun{display:none}
:not([data-theme="dark"]) .theme-toggle .icon-moon{display:none}

/* ── Hero + section headings ──────────────────────────────────── */
.hero,.page-hero{padding:3.6rem 0 2rem}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:2rem;align-items:center}
.eyebrow,.section-tag{display:inline-flex;align-items:center;gap:.55rem;text-transform:uppercase;letter-spacing:.16em;font-size:.76rem;font-weight:700;color:var(--accent)}
.eyebrow::before,.section-tag::before{content:"";width:38px;height:1px;background:currentColor;opacity:.4}
.hero-title,.section-title,.quote-title{margin:0;font-family:"Space Grotesk","Segoe UI",sans-serif;font-weight:700;letter-spacing:-.04em;line-height:1.03}
.hero-title{margin-top:1rem;font-size:clamp(2.7rem,6vw,4.35rem);max-width:14ch}
.page-hero .hero-title{font-size:clamp(2.4rem,6vw,4.2rem)}
.hero-copy-text,.section-copy,.page-lead{color:var(--muted);font-size:1.06rem;max-width:64ch}
.hero-copy-text{margin:1.25rem 0 0}

/* ── Buttons ──────────────────────────────────────────────────── */
.hero-actions,.button-row,.badge-row,.social-row,.tool-row{display:flex;flex-wrap:wrap;gap:.9rem;align-items:center}
.hero-actions{margin-top:1.6rem}
.button{display:inline-flex;align-items:center;justify-content:center;gap:.55rem;padding:.92rem 1.25rem;border-radius:999px;text-decoration:none;border:1px solid transparent;font-weight:700;transition:.18s}
.button:hover{transform:translateY(-2px)}
.button-primary{color:#fff;background:linear-gradient(135deg,var(--accent),#0d5bd6 52%,var(--accent-2));box-shadow:0 18px 34px #146ef538}
.button-secondary{color:var(--text);border-color:var(--line);background:var(--surface);box-shadow:var(--shadow-soft)}
.button-ghost{color:#fff;border-color:#ffffff3d;background:#ffffff14}

/* ── Panels ───────────────────────────────────────────────────── */
.panel{background:var(--surface);border-radius:var(--radius-xl);border:1px solid var(--line);padding:1.4rem;box-shadow:var(--shadow)}
.panel-dark,.quote-card,.cta-banner{position:relative;overflow:hidden;color:#fff;background:radial-gradient(circle at top right,#ffffff29,transparent 26%),linear-gradient(150deg,#081327 0%,#0f2144 45%,#163871 100%);border:1px solid #ffffff14;box-shadow:0 28px 60px #09162d47}
.panel-dark::before,.quote-card::before,.cta-banner::before{content:"";position:absolute;inset:auto -4rem -4rem auto;width:16rem;aspect-ratio:1;border-radius:50%;background:#14b8a633;filter:blur(40px)}
.panel-dark h1,.panel-dark h2,.panel-dark h3,.panel-dark h4,.quote-card h1,.quote-card h2,.quote-card h3,.cta-banner h1,.cta-banner h2,.cta-banner h3{color:#fff}
.panel-dark p,.panel-dark .section-copy,.panel-dark .helper-text,.quote-card p,.cta-banner p{color:rgba(226,232,240,.82)}
.panel-dark .section-tag,.quote-card .section-tag,.cta-banner .section-tag{color:#80b7ff}
.panel-dark .badge,.panel-dark .metric-chip{color:#e7f0ff;background:rgba(96,165,250,.16);border-color:rgba(147,197,253,.18)}
.panel-dark .info-list li{color:#dbeafe;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.08)}
.trust-strip{margin-top:1.4rem;display:grid;gap:.85rem}
.trust-strip span,.meta-label{font-size:.78rem;text-transform:uppercase;letter-spacing:.14em;color:#ffffffa3;font-weight:700}

/* ── Section spacing ──────────────────────────────────────────── */
.section{padding:1.2rem 0 .4rem}.section-head{display:grid;gap:.7rem;margin-bottom:1.35rem}.section-title{font-size:clamp(2rem,4.2vw,3.2rem);max-width:18ch}

/* ── Footer ───────────────────────────────────────────────────── */
.site-footer{margin-top:4.2rem;padding:3rem 0 2rem;background:var(--footer-bg);color:#ffffffd6}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.3fr) repeat(2,minmax(0,1fr));gap:1.6rem}
.footer-brand{display:grid;gap:1rem}.footer-title{margin:0 0 .75rem;color:#fff;font-size:1rem}
.footer-brand p,.footer-links p{margin:0;color:#ffffffa8}
.footer-brand .brand{width:fit-content}.footer-brand .brand-tagline{color:#ffffffa8}
.footer-links{display:grid;gap:.6rem}.footer-links a{text-decoration:none}.footer-links a:hover{text-decoration:underline}
.footer-bottom{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:2rem;padding-top:1.2rem;border-top:1px solid #ffffff1a;color:#ffffffa3;font-size:.92rem}

/* ── Contact icons ────────────────────────────────────────────── */
.contact-icons{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem}
.contact-icon{display:inline-flex;align-items:center;justify-content:center;width:3rem;height:3rem;border-radius:999px;background:var(--surface-solid);border:1px solid var(--line);box-shadow:var(--shadow-soft);transition:transform .18s ease,box-shadow .18s ease}
.contact-icon:hover{transform:translateY(-2px);box-shadow:0 18px 34px #09162d26}
.contact-icon img{width:1.45rem;height:1.45rem;object-fit:contain}
.footer-links .contact-icons{margin:.1rem 0 .25rem}

/* ── Floating WhatsApp ────────────────────────────────────────── */
.floating-whatsapp{position:fixed;right:1.25rem;bottom:1.25rem;z-index:36;display:inline-flex;align-items:center;justify-content:center;width:4rem;height:4rem;padding:0;border-radius:999px;background:transparent;text-decoration:none;box-shadow:0 18px 38px #09162d3d;overflow:hidden}
.floating-whatsapp img{width:82%;height:82%;object-fit:contain;margin:auto}
.floating-whatsapp:hover{transform:translateY(-2px)}

/* ── Misc layout ──────────────────────────────────────────────── */
.center-stack{display:grid;gap:1rem;text-align:center;justify-items:center}
.benchmark-note{display:inline-flex;width:fit-content;padding:.45rem .72rem;border-radius:999px;background:var(--accent-2-soft);color:var(--accent-2);font-size:.82rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em}
.inline-link{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.inline-link:hover{color:var(--accent-2)}
.helper-text{font-size:.85rem;color:var(--muted);margin:.5rem 0 0}

/* ── Card color accent variants ───────────────────────────────── */
.card-accent-blue{border-left:4px solid var(--accent)!important;background:linear-gradient(135deg,var(--accent-soft),var(--surface))!important}
.card-accent-coral{border-left:4px solid var(--accent-2)!important;background:linear-gradient(135deg,var(--accent-2-soft),var(--surface))!important}
.card-accent-teal{border-left:4px solid var(--accent-3)!important;background:linear-gradient(135deg,var(--accent-3-soft),var(--surface))!important}
.card-accent-purple{border-left:4px solid var(--accent-4)!important;background:linear-gradient(135deg,var(--accent-4-soft),var(--surface))!important}

/* ── Glassmorphism card ───────────────────────────────────────── */
.glass-card{background:var(--glass-bg)!important;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--glass-border)!important}

/* ── 3D perspective card hover ────────────────────────────────── */
.card-3d{transition:transform .35s ease,box-shadow .35s ease;transform-style:preserve-3d;perspective:800px}
.card-3d:hover{transform:translateY(-6px) rotateX(2deg) rotateY(-1deg);box-shadow:var(--shadow-strong)}

/* ── Micro-animation utilities ────────────────────────────────── */
@keyframes fadeInUp{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}
@keyframes scaleIn{from{opacity:0;transform:scale(.92)}to{opacity:1;transform:none}}
@keyframes shimmer{0%{background-position:-200% 0}100%{background-position:200% 0}}
@keyframes pulseGlow{0%,100%{box-shadow:0 0 0 0 var(--accent-soft)}50%{box-shadow:0 0 24px 4px var(--accent-soft)}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes spin3d{from{transform:rotateY(0deg)}to{transform:rotateY(360deg)}}

.anim-fade-up{animation:fadeInUp .6s ease both}
.anim-scale-in{animation:scaleIn .5s ease both}
.anim-float{animation:float 4s ease-in-out infinite}
.anim-pulse{animation:pulseGlow 2.5s ease-in-out infinite}

/* ── Scroll-triggered reveal (enhanced) ───────────────────────── */
.reveal-ready [data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .54s ease,transform .54s ease}
.reveal-ready [data-reveal].is-visible{opacity:1;transform:none}
.reveal-ready [data-reveal]:nth-child(2){transition-delay:.08s}
.reveal-ready [data-reveal]:nth-child(3){transition-delay:.16s}
.reveal-ready [data-reveal]:nth-child(4){transition-delay:.22s}
.reveal-ready [data-reveal]:nth-child(5){transition-delay:.28s}
.reveal-ready [data-reveal]:nth-child(6){transition-delay:.34s}

/* ── Image overlay pattern (page backgrounds) ─────────────────── */
.page-bg-pattern{position:fixed;top:0;left:0;right:0;bottom:0;z-index:-1;opacity:.03;pointer-events:none;background-size:120px;background-repeat:repeat}

/* ── Section hero images ──────────────────────────────────────── */
.section-image{width:100%;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:16/9;object-fit:cover;box-shadow:var(--shadow)}
.section-image-rounded{border-radius:var(--radius-xl)}

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width:1120px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:1280px) and (min-width:981px){
  :root{--content:min(1180px,calc(100% - 1.4rem));--nav:82px}
  .brand{gap:.55rem}.brand img{width:46px;height:46px}.brand-tagline{max-width:160px;font-size:.74rem}
  .site-nav{flex-wrap:nowrap;gap:.05rem}.site-nav a{padding:.58rem .52rem;font-size:.82rem}.nav-cta{padding:.66rem .78rem!important}
}
@media (max-width:980px){
  :root{--nav:82px}
  .menu-toggle{display:inline-block}
  .site-nav{display:none;position:absolute;left:0;right:0;top:calc(100% + .65rem);max-height:calc(100dvh - var(--nav) - 1.5rem);overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;touch-action:pan-y;background:var(--surface-solid);padding:1rem 1rem 1.15rem;border-radius:24px;border:1px solid var(--line);box-shadow:0 28px 60px #09162d1f;flex-direction:column;align-items:stretch;gap:.35rem}
  .site-nav.is-open{display:flex}
  .nav-group{display:grid;gap:.35rem}
  .nav-menu{position:static;display:grid;gap:.2rem;min-width:0;padding:.55rem;background:var(--bg-alt);box-shadow:none}
  .nav-trigger::after{margin-left:auto}
  .nav-cta{justify-content:center;margin-top:.35rem}
  .hero-grid,.footer-grid{grid-template-columns:1fr}
  body.menu-open{overflow:hidden}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}

/* Inline page modules inherit the site theme instead of forcing white cards. */
[data-theme="dark"] .eng-card,[data-theme="dark"] .cmp-wrap,[data-theme="dark"] .faq-item{background:var(--surface);border-color:var(--line);box-shadow:var(--shadow-soft)}
[data-theme="dark"] .eng-title,[data-theme="dark"] .eng-points li,[data-theme="dark"] .proc-label,[data-theme="dark"] .faq-btn,[data-theme="dark"] table.cmp td:first-child{color:var(--text)}
[data-theme="dark"] .eng-desc,[data-theme="dark"] .proc-text,[data-theme="dark"] .faq-body p,[data-theme="dark"] table.cmp td{color:var(--muted)}
[data-theme="dark"] .eng-model{color:#cbd5e1;background:rgba(255,255,255,.08)}
[data-theme="dark"] .eng-icon-a{background:var(--accent-soft)}
[data-theme="dark"] .eng-icon-d{background:var(--accent-3-soft)}
[data-theme="dark"] .eng-icon-m{background:var(--accent-2-soft)}
[data-theme="dark"] .faq-btn:hover{background:rgba(255,255,255,.06)}
[data-theme="dark"] .faq-btn[aria-expanded="true"]{background:var(--accent-soft);color:#93c5fd}
[data-theme="dark"] table.cmp td{border-color:var(--line)}
[data-theme="dark"] table.cmp tr:nth-child(even) td{background:rgba(255,255,255,.035)}
[data-theme="dark"] table.cmp td:nth-child(3),[data-theme="dark"] table.cmp tr:nth-child(even) td:nth-child(3){background:rgba(59,130,246,.16)}
@media (max-width:740px){
  .site-shell{width:min(1180px,calc(100% - 1.2rem))}
  .hero,.page-hero{padding-top:2.6rem}
  .hero-title{max-width:13ch}
  .panel,.quote-card,.cta-banner{border-radius:24px;padding:1.35rem}
  .floating-whatsapp{left:auto;right:.8rem;bottom:.8rem;width:3.7rem;height:3.7rem}
}

/* Medium-width navigation: use the same scrollable menu before links collide. */
@media (max-width:1280px) and (min-width:981px){
  .menu-toggle{display:inline-block}
  .site-nav{display:none;position:absolute;left:0;right:0;top:calc(100% + .65rem);max-height:calc(100dvh - var(--nav) - 1.5rem);overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;touch-action:pan-y;background:var(--surface-solid);padding:1rem 1rem 1.15rem;border-radius:24px;border:1px solid var(--line);box-shadow:0 28px 60px #09162d1f;flex-direction:column;align-items:stretch;gap:.35rem}
  .site-nav.is-open{display:flex}
  .nav-group{display:grid;gap:.35rem}
  .nav-menu{position:static;display:grid;gap:.2rem;min-width:0;padding:.55rem;background:var(--bg-alt);box-shadow:none}
  .nav-trigger::after{margin-left:auto}
  .nav-cta{justify-content:center;margin-top:.35rem}
  body.menu-open{overflow:hidden}
}