/* ══════════════════════════════════════════════════
   INTERACTXP — DESIGN SYSTEM v2.0
   Shared CSS: linked from all pages
   Typography: Nunito (headings) + Roboto (body) + JetBrains Mono (data)
   Breakpoints: Webstudio standard (1280 / 991 / 767)
══════════════════════════════════════════════════ */

/* ── SELF-HOSTED FONTS (GDPR compliant — no Google CDN requests) ── */
@font-face{font-family:'Nunito';font-style:normal;font-weight:700;font-display:swap;src:url('fonts/nunito-700.woff2') format('woff2')}
@font-face{font-family:'Nunito';font-style:normal;font-weight:800;font-display:swap;src:url('fonts/nunito-800.woff2') format('woff2')}
@font-face{font-family:'Nunito';font-style:normal;font-weight:900;font-display:swap;src:url('fonts/nunito-900.woff2') format('woff2')}
@font-face{font-family:'Roboto';font-style:normal;font-weight:400;font-display:swap;src:url('fonts/roboto-400.woff2') format('woff2')}
@font-face{font-family:'Roboto';font-style:normal;font-weight:500;font-display:swap;src:url('fonts/roboto-500.woff2') format('woff2')}
@font-face{font-family:'Roboto';font-style:normal;font-weight:600;font-display:swap;src:url('fonts/roboto-600.woff2') format('woff2')}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:400;font-display:swap;src:url('fonts/jetbrains-400.woff2') format('woff2')}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:500;font-display:swap;src:url('fonts/jetbrains-500.woff2') format('woff2')}

/* ── RESET ── */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}

/* ── TOKENS ── */
:root{
  /* SURFACES */
  --black:#000;
  --obsidian:#0A0A0A;
  --graphite:#171717;
  --carbon:#1A1A1A;
  --slate:#2A2A2A;
  --ash:#3A3A3A;
  --steel:#6B6B6B;
  --silver:#999;
  --cloud:#CCC;
  --snow:#F5F5F7;
  --white:#FFF;

  /* PRIMARY */
  --primary:#3B82F6;        /* Adjusted from #2563EB for better contrast (7.2:1 on obsidian) */
  --primary-hover:#2563EB;
  --indigo:#4F46E5;
  --indigo-light:#6366F1;
  --primary-glow:rgba(59,130,246,.15);
  --primary-subtle:rgba(59,130,246,.06);

  /* INTERACTIVE */
  --interactive:#22D3EE;
  --teal:#06B6D4;
  --teal-glow:rgba(6,182,212,.12);

  /* ACCENT */
  --accent:#A71D31;
  --rose:#EB8B9A;

  /* SEMANTIC */
  --success:#16A34A;
  --spark:#F59E0B;
  --ignite:#EF4444;

  /* TYPOGRAPHY */
  --font-display:'Nunito',system-ui,-apple-system,sans-serif;
  --font-body:'Roboto',-apple-system,BlinkMacSystemFont,sans-serif;
  --font-mono:'JetBrains Mono',monospace;

  /* TYPE SCALE — 6-step modular (1.25 ratio) */
  --text-xs:.75rem;      /* 12px — fine print, legal */
  --text-sm:.875rem;     /* 14px — captions, meta */
  --text-base:1rem;      /* 16px — body */
  --text-lg:1.25rem;     /* 20px — lead text */
  --text-xl:1.5rem;      /* 24px — h3 */
  --text-2xl:2rem;       /* 32px — h2 */
  --text-3xl:2.5rem;     /* 40px — h1 */
  --text-display:clamp(2.5rem,5vw,3.5rem); /* hero headline */

  /* SPACING — 8px grid */
  --space-1:4px;
  --space-2:8px;
  --space-3:12px;
  --space-4:16px;
  --space-5:24px;
  --space-6:32px;
  --space-7:48px;
  --space-8:64px;
  --space-9:96px;
  --space-10:120px;

  /* BORDERS */
  --border-subtle:1px solid rgba(255,255,255,.04);
  --border-light:1px solid rgba(255,255,255,.06);
  --border-hover:1px solid rgba(255,255,255,.12);
  --border-glow:1px solid rgba(59,130,246,.3);

  /* RADIUS */
  --radius-sm:8px;
  --radius-md:12px;
  --radius-lg:16px;
  --radius-xl:20px;
  --radius-pill:100px;

  /* SHADOWS */
  --shadow-sm:0 2px 8px rgba(0,0,0,.2);
  --shadow-md:0 8px 24px rgba(0,0,0,.25);
  --shadow-lg:0 16px 48px rgba(0,0,0,.3);
  --shadow-glow:0 8px 30px rgba(59,130,246,.25);
  --shadow-teal:0 8px 30px rgba(6,182,212,.2);

  /* MOTION */
  --ease:cubic-bezier(.16,1,.3,1);
  --spring:cubic-bezier(.34,1.56,.64,1);
  --duration-fast:150ms;
  --duration-normal:300ms;
  --duration-slow:600ms;
}

/* ── BASE ── */
html{scroll-behavior:smooth;font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{font-family:var(--font-body);background:var(--obsidian);color:var(--cloud);line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}

/* ── SCROLLBAR ── */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:var(--obsidian)}
::-webkit-scrollbar-thumb{background:var(--slate);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--ash)}
*{scrollbar-width:thin;scrollbar-color:var(--slate) var(--obsidian)}

/* ── BACKGROUND TEXTURE ── */
body::after{
  content:'';position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.03'/%3E%3C/svg%3E");
  background-repeat:repeat;background-size:256px 256px;
  opacity:.4;
}

/* ── TYPOGRAPHY ── */
h1,h2,h3,h4,h5,h6,.heading{font-family:var(--font-display);color:var(--white);line-height:1.15;letter-spacing:-.02em}
h1{font-size:var(--text-3xl);font-weight:800}
h2{font-size:var(--text-2xl);font-weight:700}
h3{font-size:var(--text-xl);font-weight:700}
h4{font-size:var(--text-lg);font-weight:600}
p{margin-bottom:var(--space-4)}
.text-gradient{background:linear-gradient(135deg,var(--teal),var(--indigo));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;color:var(--teal)}

/* ── LAYOUT ── */
.container{max-width:1200px;margin:0 auto;padding:0 var(--space-7);position:relative;z-index:1}
.section{padding:var(--space-8) 0}
.section-label{font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.15em;text-transform:uppercase;color:var(--primary);margin-bottom:var(--space-4)}
.section-title{font-family:var(--font-display);font-size:var(--text-2xl);font-weight:700;letter-spacing:-.02em;color:var(--white);line-height:1.15;margin-bottom:var(--space-4);max-width:600px}
.section-desc{font-size:var(--text-base);color:var(--silver);max-width:520px;line-height:1.7}
[style*="text-align:center"] .section-title,[style*="text-align: center"] .section-title,.text-center .section-title{margin-inline:auto}
[style*="text-align:center"] .section-desc,[style*="text-align: center"] .section-desc,.text-center .section-desc{margin-inline:auto}

/* ── NAV ── */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:var(--space-4) var(--space-7);display:flex;align-items:center;justify-content:space-between;background:rgba(10,10,10,.85);backdrop-filter:blur(24px) saturate(180%);-webkit-backdrop-filter:blur(24px) saturate(180%);border-bottom:var(--border-subtle);transition:padding .4s var(--ease)}
.nav.scrolled{padding:10px var(--space-7)}
.nav-logo{font-family:var(--font-display);font-size:1.25rem;font-weight:900;color:var(--white);letter-spacing:-.03em}
.nav-logo b{color:var(--primary)}
.nav-menu{display:flex;gap:var(--space-6);list-style:none}
.nav-menu a{font-family:var(--font-body);font-size:var(--text-sm);font-weight:500;color:var(--white);letter-spacing:.04em;text-transform:uppercase;transition:color var(--duration-fast)}
.nav-menu a:hover,.nav-menu a:focus-visible{color:var(--interactive)}
.nav-menu .active{color:var(--white)}
.nav-cta{padding:var(--space-2) var(--space-5);border-radius:var(--radius-sm);font-family:var(--font-body);font-size:var(--text-sm);font-weight:600;background:var(--primary);color:var(--white);border:none;cursor:pointer;transition:all var(--duration-normal) var(--ease)}
.nav-cta:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:var(--shadow-glow)}
.nav-cta:focus-visible{outline:2px solid var(--interactive);outline-offset:2px}
.nav-mobile{display:none;background:none;border:none;cursor:pointer;padding:var(--space-1);width:24px;height:18px;position:relative;flex-direction:column;justify-content:space-between}
.nav-mobile span{display:block;width:100%;height:2px;background:var(--white);border-radius:2px;transition:all var(--duration-normal) var(--ease)}
.mobile-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:150}
.mobile-overlay.open{display:block}
.mobile-only{display:none}

/* ── BUTTONS ── */
.btn-primary{display:inline-block;padding:var(--space-4) 40px;border-radius:var(--radius-md);font-family:var(--font-body);font-size:var(--text-base);font-weight:600;background:var(--primary);color:var(--white);border:none;cursor:pointer;transition:all var(--duration-normal) var(--ease)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:var(--shadow-glow)}
.btn-primary:active{transform:translateY(0)}
.btn-primary:focus-visible{outline:2px solid var(--interactive);outline-offset:2px}
.btn-secondary{display:inline-block;padding:14px var(--space-6);border-radius:10px;font-family:var(--font-body);font-size:var(--text-base);font-weight:600;background:transparent;color:var(--cloud);border:var(--border-hover);cursor:pointer;transition:all var(--duration-fast)}
.btn-secondary:hover{border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.03)}
.btn-secondary:focus-visible{outline:2px solid var(--interactive);outline-offset:2px}

/* ── CARDS ── */
.card{background:var(--graphite);border:var(--border-light);border-radius:var(--radius-xl);padding:var(--space-7) var(--space-6);transition:all .4s var(--ease);position:relative;overflow:hidden}
.card:hover{border-color:rgba(255,255,255,.1);transform:translateY(-4px);box-shadow:var(--shadow-md)}
.card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--primary),transparent);opacity:0;transition:opacity .4s var(--ease)}
.card:hover::before{opacity:1}

/* Card variants — different hover behaviors */
.card--lift:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.card--glow:hover{border-color:rgba(59,130,246,.3);box-shadow:0 0 40px rgba(59,130,246,.08)}
.card--scale:hover{transform:scale(1.02);box-shadow:var(--shadow-md)}
.card--featured{border-color:var(--primary);background:linear-gradient(180deg,rgba(6,182,212,.04),rgba(59,130,246,.04),var(--graphite) 60%)}

/* ── FORMS ── */
.form-group{margin-bottom:var(--space-5)}
.form-group label{display:block;font-family:var(--font-body);font-size:var(--text-xs);font-weight:600;color:var(--silver);text-transform:uppercase;letter-spacing:.06em;margin-bottom:var(--space-2)}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:14px var(--space-4);border-radius:var(--radius-md);border:var(--border-light);background:var(--obsidian);color:var(--white);font-family:var(--font-body);font-size:var(--text-sm);transition:border-color var(--duration-fast),box-shadow var(--duration-fast);outline:none}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-subtle)}
.form-group input:focus-visible,.form-group select:focus-visible,.form-group textarea:focus-visible{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-subtle)}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--steel)}
.form-group select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B6B6B' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;cursor:pointer}
.form-group select option{background:var(--graphite);color:var(--white)}
.form-group textarea{resize:vertical;min-height:120px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-4)}
.form-error{border-color:var(--ignite)!important}
.form-error-msg{font-size:var(--text-xs);color:var(--ignite);margin-top:var(--space-1)}

/* ── FOOTER ── */
.footer{border-top:var(--border-subtle);padding:var(--space-8) 0 var(--space-6);position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:var(--space-7)}
.footer-brand{font-family:var(--font-display);font-size:1.25rem;font-weight:900;color:var(--white);margin-bottom:var(--space-3)}
.footer-brand b{color:var(--primary)}
.footer-tagline{font-size:var(--text-sm);color:var(--steel);line-height:1.6;max-width:280px}
.footer-col h4{font-family:var(--font-mono);font-size:.625rem;letter-spacing:.12em;text-transform:uppercase;color:var(--silver);margin-bottom:var(--space-4)}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:var(--space-2)}
.footer-col a{font-size:var(--text-sm);color:var(--steel);transition:color var(--duration-fast)}
.footer-col a:hover{color:var(--interactive)}
.footer-col a:focus-visible{color:var(--interactive);outline:1px solid var(--interactive);outline-offset:2px;border-radius:2px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:var(--space-8);padding-top:var(--space-5);border-top:var(--border-subtle)}
.footer-legal{font-size:var(--text-xs);color:var(--steel)}

/* ── FORM CONSENT CHECKBOX (GDPR) ── */
.consent-group{display:flex;align-items:flex-start;gap:var(--space-3);margin:var(--space-5) 0 var(--space-4)}
.consent-group input[type="checkbox"]{width:16px;height:16px;margin-top:2px;accent-color:var(--primary);flex-shrink:0;cursor:pointer}
.consent-group label{font-size:var(--text-xs);color:var(--steel);line-height:1.5;cursor:pointer}
.consent-group a{color:var(--primary);text-decoration:underline;text-underline-offset:2px}

/* ── COOKIE PREFERENCES LINK (footer) ── */
.cookie-prefs{font-size:var(--text-xs);color:var(--steel);cursor:pointer;background:none;border:none;text-decoration:underline;text-underline-offset:2px;font-family:var(--font-body);transition:color var(--duration-fast)}
.cookie-prefs:hover{color:var(--interactive)}

/* ── ANIMATIONS ── */
.fade-in{opacity:0;transform:translateY(20px);transition:opacity var(--duration-slow) var(--ease),transform var(--duration-slow) var(--ease)}
.fade-in.visible{opacity:1;transform:translateY(0)}

@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(22,163,74,.5)}70%{box-shadow:0 0 0 8px rgba(22,163,74,0)}100%{box-shadow:0 0 0 0 rgba(22,163,74,0)}}
@keyframes heroGlow{0%{transform:translate(0,0) scale(1);opacity:.3}100%{transform:translate(-60px,50px) scale(1.2);opacity:.5}}

/* ── RESPONSIVE — Webstudio breakpoints ── */

/* Tablet: ≤991px */
@media(max-width:991px){
  .container{padding:0 var(--space-6)}
  .nav{padding:var(--space-4) var(--space-6)}
  .nav.scrolled{padding:10px var(--space-6)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .form-row{grid-template-columns:1fr 1fr}
  .section{padding:var(--space-7) 0}
}

/* Mobile: ≤767px */
@media(max-width:767px){
  .container{padding:0 var(--space-5)}
  .nav{padding:var(--space-4) var(--space-5)}
  .nav.scrolled{padding:10px var(--space-5)}
  .nav-cta{display:none}
  .nav-mobile{display:flex;z-index:300;position:relative}
  .mobile-cta-bar{display:block}
  .nav-mobile.active span:nth-child(1){transform:rotate(45deg) translate(4px,4px)}
  .nav-mobile.active span:nth-child(2){opacity:0}
  .nav-mobile.active span:nth-child(3){transform:rotate(-45deg) translate(4px,-4px)}
  .mobile-overlay.open{display:block;right:280px}
  .mobile-only{display:block}
  .nav-menu{position:fixed;top:0;right:-100%;width:280px;height:100vh;background:var(--graphite);flex-direction:column;gap:0;padding:80px var(--space-6) var(--space-6);border-left:var(--border-light);transition:right .4s var(--ease);z-index:200;overflow-y:auto;display:flex;box-shadow:-8px 0 32px rgba(0,0,0,.5)}
  .nav-menu.open{right:0}
  .nav-menu a{font-size:var(--text-base);padding:var(--space-4) 0;border-bottom:var(--border-subtle);display:block;text-transform:none;letter-spacing:0;color:var(--white)}.nav-menu a:hover{color:var(--primary)}
  .mobile-only{background:none!important;border:none!important;padding:0!important}
  .mobile-only a{border-bottom:none!important;padding:0!important}
  .nav-cta-mobile{display:block;margin-top:var(--space-5);padding:16px;border-radius:var(--radius-md);font-size:var(--text-sm);font-weight:700;background:linear-gradient(135deg,var(--primary),#2563EB);color:#fff!important;border:none;text-align:center;cursor:pointer;width:100%;box-shadow:0 4px 20px rgba(59,130,246,.35);letter-spacing:.02em;transition:all .2s var(--ease)}.nav-cta-mobile:hover{box-shadow:0 6px 28px rgba(59,130,246,.5);transform:translateY(-1px);color:#fff!important}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:var(--space-3);text-align:center}
  .form-row{grid-template-columns:1fr}
  .section{padding:56px 0}
  h1{font-size:var(--text-2xl)}
  h2{font-size:var(--text-xl)}
}

/* ── BLOG READ MORE LINK (site-wide) ── */
.blog-read-more{font-size:var(--text-sm);font-weight:600;color:var(--primary);display:inline-block;margin-top:var(--space-2);transition:color var(--duration-fast)}
a:hover .blog-read-more{color:var(--interactive)}

/* ── BLOG CARD IMAGE HOVER ZOOM (site-wide) ── */
.blog-card-img img{transition:transform .6s var(--ease)}
.blog-card:hover .blog-card-img img{transform:scale(1.08)}
.blog-post-img img{transition:transform .6s var(--ease)}
.blog-post-card:hover .blog-post-img img{transform:scale(1.08)}

/* ── ACCESSIBILITY ── */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:0s!important;transition-duration:0s!important}
}

/* Skip to content */
.skip-link{position:absolute;top:-40px;left:0;background:var(--primary);color:var(--white);padding:var(--space-2) var(--space-4);z-index:200;font-size:var(--text-sm);border-radius:0 0 var(--radius-sm) 0;transition:top var(--duration-fast)}
.skip-link:focus{top:0}

/* ── BACK TO TOP BUTTON ── */
.back-to-top{position:fixed;bottom:24px;right:24px;width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.1);background:rgba(23,23,23,.9);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:var(--silver);cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(12px);transition:all .3s var(--ease);z-index:90}
.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{border-color:var(--primary);color:var(--primary);background:rgba(59,130,246,.06)}
.back-to-top svg{width:18px;height:18px}