/* ══════════════════════════════════════════════
   NeolithAI Agency — Shared Styles v3.0
   Redesign: refined palette, type pairing,
   dark mode, SVG icons (Lucide), a11y
══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@500;600&display=swap');

*{margin:0;padding:0;box-sizing:border-box;}

:root{
  /* surfaces */
  --bg:#f5f6f3;
  --bg2:#eceee8;
  --surface:#ffffff;
  --surface2:#fbfbf9;
  /* brand */
  --accent:#2f5fe0;
  --accent-ink:#2249bf;
  --accent-soft:rgba(47,95,224,0.08);
  --accent2:#0e9e7a;
  --accent2-ink:#0b8066;
  --accent2-soft:rgba(14,158,122,0.09);
  --signal:#dd9b32;
  /* text */
  --text:#141c28;
  --text2:#54606f;
  --text3:#8a93a1;
  /* lines */
  --border:#e5e4dc;
  --border2:#d8d8cd;
  /* fx */
  --shadow:0 1px 2px rgba(20,28,40,0.04),0 10px 26px rgba(20,28,40,0.05);
  --shadow-lg:0 16px 44px rgba(20,28,40,0.10);
  --radius:14px;
  --radius-lg:22px;
  /* type */
  --sans:'Plus Jakarta Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  --display:'Space Grotesk','Plus Jakarta Sans',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,'SFMono-Regular',monospace;
}

html[data-theme="dark"]{
  --bg:#0d1017;
  --bg2:#12161f;
  --surface:#161d2b;
  --surface2:#1a2231;
  --accent:#5d86ff;
  --accent-ink:#82a3ff;
  --accent-soft:rgba(93,134,255,0.13);
  --accent2:#1bb88f;
  --accent2-ink:#3fd2ab;
  --accent2-soft:rgba(27,184,143,0.14);
  --signal:#e6ad4a;
  --text:#eef1f6;
  --text2:#9aa6b6;
  --text3:#6b7787;
  --border:#27313f;
  --border2:#313c4d;
  --shadow:0 1px 2px rgba(0,0,0,0.4),0 12px 30px rgba(0,0,0,0.35);
  --shadow-lg:0 18px 52px rgba(0,0,0,0.5);
}

html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  line-height:1.7;
  font-size:16px;
  padding-top:66px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  transition:background .3s ease,color .3s ease;
}

/* ── ICONS (Lucide) ── */
[data-lucide]{display:inline-block;vertical-align:middle;}
svg.ic{width:24px;height:24px;stroke-width:1.7;}
svg.ic-sm{width:18px;height:18px;stroke-width:1.8;}
svg.ic-lg{width:30px;height:30px;stroke-width:1.6;}
.icon-tile{
  width:52px;height:52px;border-radius:14px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--accent-soft);color:var(--accent);
}
.icon-tile.teal{background:var(--accent2-soft);color:var(--accent2);}

/* ── TYPOGRAPHY ── */
h1,h2,h3,h4{font-family:var(--display);color:var(--text);}
h1{font-size:clamp(2.1rem,4.4vw,3.5rem);font-weight:700;line-height:1.06;letter-spacing:-1.4px;}
h2{font-size:clamp(1.55rem,3vw,2.3rem);font-weight:700;line-height:1.18;letter-spacing:-0.8px;}
h3{font-size:1.1rem;font-weight:600;letter-spacing:-0.2px;}
h1 .accent,h2 .accent{color:var(--accent);}
p{color:var(--text2);line-height:1.75;}
code{font-family:var(--mono);}

.section-label{
  font-family:var(--mono);
  font-size:11px;font-weight:600;letter-spacing:2.5px;
  text-transform:uppercase;color:var(--accent2);margin-bottom:.85rem;
  display:inline-flex;align-items:center;gap:8px;
}
.section-label::before{
  content:'';width:22px;height:1.5px;background:var(--accent2);display:inline-block;
}
.section-title{margin-bottom:3rem;}

/* ── LAYOUT ── */
section{padding:5.5rem 2rem;}
.container{max-width:1140px;margin:0 auto;}

/* ── BUTTONS ── */
.btn-primary{
  background:var(--accent);color:#fff;border:none;
  padding:13px 26px;border-radius:11px;font-size:15px;font-weight:600;
  font-family:var(--sans);cursor:pointer;text-decoration:none;
  transition:transform .18s,box-shadow .18s,background .18s;
  display:inline-flex;align-items:center;gap:8px;letter-spacing:.1px;
}
.btn-primary:hover{background:var(--accent-ink);transform:translateY(-2px);box-shadow:0 10px 24px rgba(47,95,224,0.28);}
.btn-outline{
  background:transparent;color:var(--accent);
  border:1.5px solid var(--border2);padding:11.5px 26px;border-radius:11px;
  font-size:15px;font-weight:600;font-family:var(--sans);cursor:pointer;text-decoration:none;
  transition:all .18s;display:inline-flex;align-items:center;gap:8px;
}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);transform:translateY(-2px);}
.btn-teal{
  background:var(--accent2);color:#fff;border:none;
  padding:13px 26px;border-radius:11px;font-size:15px;font-weight:600;
  font-family:var(--sans);cursor:pointer;text-decoration:none;transition:all .18s;display:inline-flex;align-items:center;gap:8px;
}
.btn-teal:hover{background:var(--accent2-ink);transform:translateY(-2px);box-shadow:0 10px 24px rgba(14,158,122,0.28);}
.btn-group{display:flex;gap:12px;flex-wrap:wrap;align-items:center;}

/* ── NAV ── */
nav{
  position:fixed;top:0;left:0;right:0;z-index:200;
  background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--border);padding:0 2rem;
  transition:box-shadow .3s,background .3s,border-color .3s;
}
nav.scrolled{box-shadow:0 4px 30px rgba(20,28,40,0.07);}
.nav-inner{
  max-width:1140px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;height:66px;
}
.logo-wrap{display:flex;align-items:center;gap:10px;text-decoration:none;}
.logo-text{display:flex;flex-direction:column;line-height:1.12;}
.logo-name{font-family:var(--display);font-size:15.5px;font-weight:700;color:var(--text);letter-spacing:-.4px;}
.logo-name .ai{color:var(--accent2);}
.logo-sub{font-family:var(--mono);font-size:8.5px;font-weight:600;letter-spacing:3.5px;text-transform:uppercase;color:var(--text3);text-align:left;}

.nav-links{display:flex;gap:2px;list-style:none;align-items:center;}
.nav-links a{
  color:var(--text2);text-decoration:none;font-size:14px;font-weight:500;
  padding:7px 13px;border-radius:8px;transition:all .18s;position:relative;
}
.nav-links a:hover{color:var(--accent);background:var(--accent-soft);}
.nav-links a.active{color:var(--accent);background:var(--accent-soft);}
.nav-cta{
  background:var(--accent);color:#fff !important;
  padding:9px 18px !important;border-radius:10px !important;
  font-weight:600 !important;margin-left:8px;
  transition:all .18s !important;
}
.nav-cta:hover{background:var(--accent-ink) !important;transform:translateY(-1px);box-shadow:0 6px 16px rgba(47,95,224,0.3);}

.nav-right{display:flex;align-items:center;gap:10px;}
.lang-switcher{display:flex;gap:3px;background:var(--bg2);padding:3px;border-radius:9px;border:1px solid var(--border);}
.lang-btn{
  background:none;border:none;color:var(--text2);
  padding:4px 8px;border-radius:6px;font-size:11px;font-weight:600;
  font-family:var(--mono);cursor:pointer;transition:all .15s;letter-spacing:.5px;
}
.lang-btn.active{color:#fff;background:var(--accent);}
.lang-btn:hover:not(.active){color:var(--accent);}

/* theme toggle */
.theme-toggle{
  width:34px;height:34px;border-radius:9px;border:1px solid var(--border);
  background:var(--bg2);color:var(--text2);cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:all .18s;flex-shrink:0;
}
.theme-toggle:hover{color:var(--accent);border-color:var(--accent);}
.theme-toggle .ic-sun{display:none;}
html[data-theme="dark"] .theme-toggle .ic-sun{display:block;}
html[data-theme="dark"] .theme-toggle .ic-moon{display:none;}

/* Burger */
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px;border:none;background:none;}
.burger span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:all .3s;}

/* Mobile menu */
.mobile-menu{
  display:none;position:fixed;top:66px;left:0;right:0;
  background:var(--surface);border-bottom:1px solid var(--border);
  padding:1rem 2rem 1.5rem;z-index:199;
  box-shadow:0 14px 30px rgba(20,28,40,0.10);
}
.mobile-menu a{
  display:block;padding:12px 0;color:var(--text2);text-decoration:none;
  font-size:15px;font-weight:500;border-bottom:1px solid var(--border);
  transition:color .2s;
}
.mobile-menu a:hover{color:var(--accent);}
.mobile-menu.open{display:block;}
.mobile-cta-wrap{margin-top:1rem;}
.mobile-lang{display:flex;gap:6px;margin-top:1rem;}
.mobile-lang .lang-btn{flex:1;text-align:center;border:1px solid var(--border);padding:8px;}

/* ── FOOTER ── */
footer{
  background:#0d1017;color:rgba(255,255,255,0.7);
  padding:4rem 2rem 2rem;border-top:1px solid rgba(255,255,255,0.06);
}
html[data-theme="dark"] footer{background:#080a0f;}
.footer-inner{max-width:1140px;margin:0 auto;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:3rem;margin-bottom:3rem;}
.footer-brand .logo-name{color:#fff;font-size:16px;}
.footer-brand .logo-name .ai{color:var(--accent2);}
.footer-brand .logo-sub{color:rgba(255,255,255,0.4);}
.footer-tagline{font-size:13px;color:rgba(255,255,255,0.5);margin-top:12px;line-height:1.6;max-width:230px;}
.footer-col h4{font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:2px;text-transform:uppercase;color:rgba(255,255,255,0.4);margin-bottom:1rem;}
.footer-col a{display:block;color:rgba(255,255,255,0.6);text-decoration:none;font-size:14px;margin-bottom:9px;transition:color .2s;}
.footer-col a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding-top:1.5rem;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem;}
.footer-copy{font-size:13px;color:rgba(255,255,255,0.35);}
.footer-social{display:flex;gap:12px;}
.footer-social a{
  width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,0.1);
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,0.45);
  text-decoration:none;transition:all .2s;
}
.footer-social a svg{width:16px;height:16px;fill:currentColor;transition:fill .2s;}
.footer-social a:hover{border-color:var(--accent2);color:var(--accent2);background:rgba(14,158,122,0.12);transform:translateY(-2px);}
.footer-social a[aria-label="LinkedIn"]:hover{border-color:#0a66c2;color:#3b9aef;}
.footer-social a[aria-label="GitHub"]:hover{border-color:#fff;color:#fff;}
.footer-social a[aria-label="Upwork"]:hover{border-color:#6fda44;color:#6fda44;}
.footer-social a[aria-label="Facebook"]:hover{border-color:#1877f2;color:#4a92ff;}

/* ── SCROLL REVEAL ── */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1);}
.reveal.visible{opacity:1;transform:translateY(0);}
.reveal-delay-1{transition-delay:.08s;}
.reveal-delay-2{transition-delay:.16s;}
.reveal-delay-3{transition-delay:.24s;}
.reveal-delay-4{transition-delay:.32s;}
.reveal-delay-5{transition-delay:.4s;}

/* ── CARDS ── */
.card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:1.75rem;
  transition:border-color .2s,transform .25s,box-shadow .25s;
}
.card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:var(--shadow-lg);}

/* ── TRUST BAR ── */
.trust-bar{
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  background:var(--surface2);padding:1.5rem 2rem;
}
.trust-inner{
  max-width:1140px;margin:0 auto;display:flex;align-items:center;
  gap:2rem;flex-wrap:wrap;justify-content:space-between;
}
.trust-label{font-family:var(--mono);font-size:11px;letter-spacing:1.5px;text-transform:uppercase;color:var(--text3);white-space:nowrap;}
.trust-items{display:flex;align-items:center;gap:1.75rem;flex-wrap:wrap;}
.trust-item{display:flex;align-items:center;gap:8px;font-family:var(--display);font-weight:600;font-size:15px;color:var(--text2);white-space:nowrap;}
.trust-item svg{width:18px;height:18px;color:var(--text3);}
.trust-badge{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--accent2-soft);color:var(--accent2);
  border:1px solid color-mix(in srgb,var(--accent2) 30%,transparent);
  padding:7px 14px;border-radius:30px;font-size:13px;font-weight:600;white-space:nowrap;
}
.trust-badge svg{width:15px;height:15px;}

/* ── PHILOSOPHY STRIP ── */
.philosophy-strip{
  background:#0d1017;padding:3.5rem 2rem;
}
html[data-theme="dark"] .philosophy-strip{background:#080a0f;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.philosophy-grid{max-width:1140px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:2.5rem;}
.phil-item{display:flex;flex-direction:column;gap:12px;}
.phil-num{font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:2px;color:var(--accent2);}
.phil-text{font-size:.98rem;font-weight:500;color:rgba(255,255,255,0.82);line-height:1.6;}

/* ── NEWSLETTER STRIP ── */
.newsletter-strip{
  background:radial-gradient(120% 140% at 0% 0%,#22335a 0%,#141c28 55%);
  padding:4.5rem 2rem;text-align:center;position:relative;overflow:hidden;
}
.newsletter-strip h2{color:#fff;margin-bottom:.75rem;}
.newsletter-strip p{color:rgba(255,255,255,0.72);max-width:500px;margin:0 auto 2rem;}
.newsletter-form{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;max-width:480px;margin:0 auto;}
.newsletter-input{
  flex:1;min-width:220px;background:rgba(255,255,255,0.1);
  border:1px solid rgba(255,255,255,0.22);border-radius:11px;
  padding:13px 16px;color:#fff;font-size:15px;font-family:inherit;outline:none;transition:border-color .2s;
}
.newsletter-input::placeholder{color:rgba(255,255,255,0.45);}
.newsletter-input:focus{border-color:var(--accent2);}
.newsletter-btn{
  background:var(--accent2);color:#fff;border:none;
  padding:13px 24px;border-radius:11px;font-size:15px;font-weight:600;font-family:var(--sans);
  cursor:pointer;transition:all .2s;white-space:nowrap;
}
.newsletter-btn:hover{background:var(--accent2-ink);transform:translateY(-1px);}
.newsletter-success{display:none;color:#5fe0bb;font-weight:600;font-size:15px;margin-top:1rem;}

/* ── PAGE HERO (inner pages) ── */
.page-hero{
  background:
    radial-gradient(70% 120% at 88% 0%,var(--accent2-soft),transparent 60%),
    radial-gradient(60% 120% at 0% 0%,var(--accent-soft),transparent 55%),
    var(--bg);
  padding:5.5rem 2rem 4rem;border-bottom:1px solid var(--border);text-align:center;
}
.page-hero h1{margin-bottom:1rem;}
.page-hero p{font-size:1.12rem;max-width:620px;margin:0 auto;}

/* ── BADGE ── */
.badge{
  display:inline-flex;align-items:center;gap:9px;
  background:var(--surface);border:1px solid var(--border);
  border-radius:30px;padding:7px 16px;font-size:13px;color:var(--text2);
  box-shadow:var(--shadow);margin-bottom:1.75rem;font-weight:500;
}
.badge-dot{width:8px;height:8px;border-radius:50%;background:var(--accent2);box-shadow:0 0 0 0 rgba(14,158,122,0.5);animation:pulse 2.4s infinite;}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(14,158,122,0.45);}70%{box-shadow:0 0 0 8px rgba(14,158,122,0);}100%{box-shadow:0 0 0 0 rgba(14,158,122,0);}}

/* ── AI CHAT WIDGET ── */
.ai-widget-btn{
  position:fixed;bottom:28px;right:28px;z-index:300;
  width:58px;height:58px;border-radius:18px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  border:none;cursor:pointer;box-shadow:0 8px 28px rgba(47,95,224,0.4);
  display:flex;align-items:center;justify-content:center;transition:transform .2s,box-shadow .2s;
}
.ai-widget-btn:hover{transform:translateY(-3px) scale(1.04);box-shadow:0 12px 34px rgba(47,95,224,0.5);}
.ai-widget-btn svg{width:26px;height:26px;fill:white;}
.ai-widget-pulse{position:absolute;top:-3px;right:-3px;width:14px;height:14px;border-radius:50%;background:var(--accent2);border:2px solid var(--bg);animation:pulse 2.4s infinite;}
.ai-chat-panel{
  position:fixed;bottom:98px;right:28px;z-index:300;
  width:374px;max-height:540px;background:var(--surface);
  border-radius:var(--radius-lg);box-shadow:0 24px 70px rgba(20,28,40,0.28);
  border:1px solid var(--border);display:none;flex-direction:column;overflow:hidden;animation:slideUp .3s ease;
}
.ai-chat-panel.open{display:flex;}
@keyframes slideUp{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:translateY(0);}}
.ai-chat-header{background:linear-gradient(135deg,var(--accent),var(--accent-ink));padding:16px 20px;display:flex;align-items:center;gap:12px;}
.ai-chat-avatar{width:38px;height:38px;border-radius:11px;background:rgba(255,255,255,0.2);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:#fff;}
.ai-chat-avatar svg{width:20px;height:20px;}
.ai-chat-header-info{flex:1;}
.ai-chat-name{font-family:var(--display);font-size:14px;font-weight:700;color:#fff;}
.ai-chat-status{font-size:12px;color:rgba(255,255,255,0.75);display:flex;align-items:center;gap:6px;}
.ai-chat-status::before{content:'';width:7px;height:7px;border-radius:50%;background:#5fe0bb;display:inline-block;}
.ai-chat-close{background:none;border:none;color:rgba(255,255,255,0.75);cursor:pointer;font-size:20px;padding:0 4px;transition:color .2s;}
.ai-chat-close:hover{color:#fff;}
.ai-chat-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px;max-height:340px;}
.ai-chat-messages::-webkit-scrollbar{width:4px;}
.ai-chat-messages::-webkit-scrollbar-thumb{background:var(--border2);border-radius:4px;}
.msg{max-width:85%;padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.55;}
.msg-bot{background:var(--bg2);color:var(--text);border-radius:4px 14px 14px 14px;align-self:flex-start;}
.msg-user{background:var(--accent);color:#fff;border-radius:14px 4px 14px 14px;align-self:flex-end;}
.msg-typing{background:var(--bg2);padding:12px 16px;border-radius:4px 14px 14px 14px;align-self:flex-start;}
.typing-dots{display:flex;gap:5px;align-items:center;}
.typing-dots span{width:7px;height:7px;border-radius:50%;background:var(--text3);animation:typingBounce 1.2s infinite;}
.typing-dots span:nth-child(2){animation-delay:.2s;}
.typing-dots span:nth-child(3){animation-delay:.4s;}
@keyframes typingBounce{0%,60%,100%{transform:translateY(0);}30%{transform:translateY(-6px);}}
.ai-chat-input-row{padding:12px 16px;border-top:1px solid var(--border);display:flex;gap:8px;align-items:center;}
.ai-chat-input{flex:1;border:1px solid var(--border);border-radius:10px;padding:10px 14px;font-size:14px;font-family:inherit;outline:none;color:var(--text);background:var(--bg);transition:border-color .2s;resize:none;}
.ai-chat-input:focus{border-color:var(--accent);}
.ai-chat-send{background:var(--accent);border:none;border-radius:10px;width:38px;height:38px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s;flex-shrink:0;}
.ai-chat-send:hover{background:var(--accent-ink);}
.ai-chat-send svg{width:18px;height:18px;fill:white;}
.ai-chat-suggestions{padding:0 16px 12px;display:flex;flex-wrap:wrap;gap:6px;}
.ai-suggestion{background:var(--bg2);border:1px solid var(--border);border-radius:30px;padding:6px 12px;font-size:12px;color:var(--accent);cursor:pointer;transition:all .2s;white-space:nowrap;font-family:inherit;}
.ai-suggestion:hover{background:var(--accent);color:#fff;border-color:var(--accent);}

/* ── LANG VISIBILITY ── */
[data-lang]{display:none;}
[data-lang].active{display:block;}
span[data-lang]{display:none;}
span[data-lang].active{display:inline;}

/* ── ACCESSIBILITY ── */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2.5px solid var(--accent);outline-offset:2px;border-radius:6px;
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1 !important;transform:none !important;}
}

/* ── RESPONSIVE ── */
@media(max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;}
  .philosophy-grid{grid-template-columns:1fr;}
  .trust-inner{flex-direction:column;align-items:flex-start;gap:1rem;}
}
@media(max-width:760px){
  .nav-links{display:none;}
  .burger{display:flex;}
  .lang-switcher{display:none;}
  section{padding:4rem 1.5rem;}
  .ai-chat-panel{width:calc(100vw - 32px);right:16px;}
  .footer-grid{grid-template-columns:1fr;}
}