/* ===== RESET & BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.6;transition:background .3s,color .3s}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
button{cursor:pointer;border:none;background:none;font:inherit}

/* ===== DARK THEME ===== */
:root,.dark{
  --bg:#0a0e1a;
  --bg-alt:#0f1524;
  --bg-card:#141c2e;
  --bg-muted:#19233a;
  --border:#1e2d48;
  --border-2:#2c3e5e;
  --text-1:#edf2f7;
  --text-2:#94a3b8;
  --text-3:#5a6a80;
  --accent:#3b82f6;
  --accent-bg:rgba(59,130,246,.12);
  --green:#22c55e;
  --green-bg:rgba(34,197,94,.12);
  --purple:#a78bfa;
  --purple-bg:rgba(167,139,250,.12);
  --orange:#fb923c;
  --orange-bg:rgba(251,146,60,.12);
  --red:#f87171;
  --red-bg:rgba(248,113,113,.12);
  --cyan:#22d3ee;
  --cyan-bg:rgba(34,211,238,.12);
  --card-shadow:0 1px 3px rgba(0,0,0,.3),0 4px 12px rgba(0,0,0,.2);
  --card-hover:0 4px 20px rgba(0,0,0,.4);
  --nav-bg:rgba(10,14,26,.88);
  color-scheme:dark
}

/* ===== LIGHT THEME ===== */
.light{
  --bg:#f5f7fa;
  --bg-alt:#edf0f5;
  --bg-card:#ffffff;
  --bg-muted:#eef1f6;
  --border:#d1d5db;
  --border-2:#9ca3af;
  --text-1:#111827;
  --text-2:#374151;
  --text-3:#6b7280;
  --accent:#2563eb;
  --accent-bg:rgba(37,99,235,.08);
  --green:#16a34a;
  --green-bg:rgba(22,163,74,.08);
  --purple:#7c3aed;
  --purple-bg:rgba(124,58,237,.08);
  --orange:#ea580c;
  --orange-bg:rgba(234,88,12,.08);
  --red:#dc2626;
  --red-bg:rgba(220,38,38,.08);
  --cyan:#0891b2;
  --cyan-bg:rgba(8,145,178,.08);
  --card-shadow:0 1px 3px rgba(0,0,0,.06),0 4px 12px rgba(0,0,0,.04);
  --card-hover:0 4px 20px rgba(0,0,0,.1);
  --nav-bg:rgba(245,247,250,.92);
  color-scheme:light
}

body{background:var(--bg);color:var(--text-2)}

/* ===== LAYOUT ===== */
.container{max-width:1120px;margin:0 auto;padding:0 24px}
@media(min-width:768px){.container{padding:0 40px}}
.section{padding:80px 0}
.section-alt{background:var(--bg-alt)}
.section-header{text-align:center;margin-bottom:48px}
.section-tag{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--accent);margin-bottom:12px}
.section-title{font-size:clamp(1.5rem,4vw,2.25rem);font-weight:800;color:var(--text-1);letter-spacing:-.02em;line-height:1.2;margin-bottom:12px}
.section-desc{font-size:15px;color:var(--text-2);max-width:560px;margin:0 auto;line-height:1.7}

/* ===== CARD ===== */
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;box-shadow:var(--card-shadow);transition:box-shadow .2s,border-color .2s,transform .2s}
.card:hover{box-shadow:var(--card-hover);border-color:var(--border-2);transform:translateY(-2px)}

/* ===== NAV ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;height:64px;transition:background .2s,border .2s,backdrop-filter .2s;border-bottom:1px solid transparent}
.nav.scrolled{background:var(--nav-bg);backdrop-filter:blur(16px) saturate(180%);border-bottom-color:var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;color:var(--text-1)}
.nav-logo span{color:var(--text-3);font-weight:400}
.logo-icon{width:32px;height:32px;border-radius:8px;background:var(--accent);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:14px}
.nav-links{display:none;align-items:center;gap:4px}
.nav-links a{padding:6px 12px;font-size:13px;font-weight:500;color:var(--text-3);border-radius:6px;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--text-1);background:var(--bg-muted)}
.nav-right{display:flex;align-items:center;gap:8px}
.theme-btn,.menu-btn{width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--text-3);border:1px solid var(--border);transition:color .2s,background .2s}
.theme-btn:hover,.menu-btn:hover{color:var(--text-1);background:var(--bg-muted)}
.nav-cta{display:none;padding:8px 16px;font-size:13px;font-weight:600;color:#fff;background:var(--accent);border-radius:8px;transition:opacity .2s}
.nav-cta:hover{opacity:.9}
@media(min-width:1024px){
  .nav-links{display:flex}
  .nav-cta{display:inline-flex}
  .menu-btn{display:none}
}

/* ===== MOBILE MENU ===== */
.mobile-menu{display:none;position:fixed;inset:64px 0 0 0;background:var(--bg);z-index:99;padding:24px;overflow-y:auto}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:14px 16px;font-size:16px;font-weight:500;color:var(--text-2);border-bottom:1px solid var(--border);border-radius:8px}
.mobile-menu .mob-cta{margin-top:16px;display:block;text-align:center;padding:14px;font-weight:600;color:#fff;background:var(--accent);border-radius:12px;border:none}

/* ===== HERO ===== */
.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:100px 24px 60px;position:relative;overflow:hidden}
.hero-glow{position:absolute;border-radius:50%;filter:blur(140px);pointer-events:none}
.hero-glow-1{width:500px;height:500px;background:var(--accent);opacity:.15;top:5%;left:10%}
.hero-glow-2{width:350px;height:350px;background:var(--purple);opacity:.1;bottom:10%;right:5%}
.hero-content{position:relative;z-index:1;max-width:680px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:99px;font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);background:var(--accent-bg);border:1px solid var(--border);margin-bottom:32px}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-size:clamp(2.2rem,6vw,4.2rem);font-weight:800;letter-spacing:-.03em;line-height:1.1;color:var(--text-1);margin-bottom:20px}
.hero h1 .gradient{background:linear-gradient(135deg,var(--accent),var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:clamp(15px,2vw,18px);color:var(--text-2);line-height:1.7;margin-bottom:8px}
.hero-small{font-size:14px;color:var(--text-3);margin-bottom:40px}
.hero-btns{display:flex;flex-direction:column;gap:12px;margin-bottom:48px}
@media(min-width:480px){.hero-btns{flex-direction:row;justify-content:center}}
.btn-primary{padding:12px 28px;font-size:14px;font-weight:600;color:#fff;background:var(--accent);border-radius:12px;box-shadow:0 4px 14px rgba(59,130,246,.3);transition:opacity .2s;text-align:center}
.btn-primary:hover{opacity:.9}
.btn-secondary{padding:12px 28px;font-size:14px;font-weight:600;color:var(--text-2);background:var(--bg-card);border:1px solid var(--border);border-radius:12px;box-shadow:var(--card-shadow);transition:border-color .2s;text-align:center}
.btn-secondary:hover{border-color:var(--border-2)}
.hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;max-width:420px;margin:0 auto}
@media(min-width:480px){.hero-stats{grid-template-columns:repeat(4,1fr)}}
.hero-stat{padding:16px 8px;text-align:center}
.hero-stat .val{font-size:20px;font-weight:700;color:var(--text-1)}
.hero-stat .lbl{font-size:11px;font-weight:500;color:var(--text-3);margin-top:2px}
.scroll-hint{margin-top:48px;color:var(--text-3);animation:bob 2.5s infinite ease-in-out}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(6px)}}

/* ===== GRIDS ===== */
.grid-2{display:grid;grid-template-columns:1fr;gap:16px}
.grid-3{display:grid;grid-template-columns:1fr;gap:16px}
.grid-4{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){
  .grid-2{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
}
@media(min-width:1024px){
  .grid-3{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(4,1fr)}
}

/* ===== PROBLEM / SOLUTION ===== */
.ps-card{padding:24px}
.ps-head{display:flex;align-items:center;gap:10px;margin-bottom:20px}
.ps-icon{width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.ps-head h3{font-size:16px;font-weight:600;color:var(--text-1)}
.ps-list{display:flex;flex-direction:column;gap:12px}
.ps-item{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2);line-height:1.6}
.ps-dot{width:6px;height:6px;border-radius:50%;margin-top:8px;flex-shrink:0}
.ps-check{width:16px;height:16px;flex-shrink:0;margin-top:2px}
.see-more{display:flex;align-items:center;justify-content:center;gap:6px;margin-top:32px;font-size:14px;font-weight:500;color:var(--accent)}

/* ===== HIGHLIGHTS ===== */
.hl-card{padding:20px}
.hl-icon{width:40px;height:40px;border-radius:8px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.hl-val{font-size:22px;font-weight:700;color:var(--text-1)}
.hl-label{font-size:14px;font-weight:600;color:var(--text-1);margin-top:2px}
.hl-detail{font-size:12px;color:var(--text-3);margin-top:2px}

/* ===== FEATURES TABS ===== */
.tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:32px}
.tab{display:flex;align-items:center;gap:8px;padding:10px 16px;border-radius:8px;font-size:14px;font-weight:500;color:var(--text-3);border:1px solid var(--border);transition:all .2s}
.tab:hover,.tab.active{color:var(--text-1);border-color:var(--border-2);background:var(--bg-card);box-shadow:var(--card-shadow)}
.tab svg{width:16px;height:16px}
.tab .full{display:none}
@media(min-width:640px){.tab .full{display:inline}.tab .short{display:none}}
.feat-panel{display:none}
.feat-panel.active{display:block}
.feat-wrap{padding:20px}
@media(min-width:640px){.feat-wrap{padding:28px}}
.feat-head{display:flex;align-items:center;gap:10px;margin-bottom:24px}
.feat-badge{width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff}
.feat-head h3{font-size:18px;font-weight:600;color:var(--text-1)}
.feat-item{padding:16px;border-radius:8px;background:var(--bg-muted);border:1px solid var(--border)}
.feat-item-head{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.feat-item-head svg{width:14px;height:14px;flex-shrink:0}
.feat-item-head h4{font-size:14px;font-weight:600;color:var(--text-1)}
.feat-item p{font-size:12px;color:var(--text-3);line-height:1.7}

/* ===== TECH STACK ===== */
.tech-group{margin-bottom:40px}
.tech-group:last-child{margin-bottom:0}
.tech-label{display:flex;align-items:center;gap:8px;margin-bottom:16px}
.tech-dot{width:10px;height:10px;border-radius:50%}
.tech-label h3{font-size:14px;font-weight:600;color:var(--text-1)}
.tech-card{padding:16px}
.tech-top{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;margin-bottom:6px}
.tech-name{font-size:14px;font-weight:600;color:var(--text-1)}
.tech-tag{font-size:10px;font-weight:500;padding:2px 8px;border-radius:99px;background:var(--bg-muted);color:var(--text-3);border:1px solid var(--border);white-space:nowrap}
.tech-desc{font-size:12px;color:var(--text-3)}

/* ===== ARCHITECTURE ===== */
.arch{max-width:700px;margin:0 auto}
.arch-box{padding:16px;display:flex;align-items:center;gap:12px;justify-content:center}
.arch-box svg{width:18px;height:18px;flex-shrink:0}
.arch-box .name{font-size:14px;font-weight:600;color:var(--text-1)}
.arch-box .sub{font-size:11px;color:var(--text-3)}
.arch-arrow{display:flex;justify-content:center;padding:12px 0}
.arch-arrow svg{color:var(--text-3)}
.arch-srv{padding:16px}
.arch-srv-head{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.arch-srv-icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff}
.arch-srv-name{font-size:14px;font-weight:600;color:var(--text-1)}
.arch-srv-tech{font-size:11px;color:var(--text-3)}
.arch-tags{display:flex;flex-wrap:wrap;gap:6px}
.arch-tag{font-size:11px;padding:2px 8px;border-radius:6px;background:var(--bg-muted);color:var(--text-3);border:1px solid var(--border)}
.arch-rt{background:var(--accent-bg)}

/* ===== PAGES ===== */
.pages-card{padding:20px}
.pages-head{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.pages-icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff}
.pages-name{font-size:14px;font-weight:600;color:var(--text-1)}
.pages-count{font-size:11px;color:var(--text-3)}
.pages-list{display:flex;flex-direction:column;gap:6px}
.pages-list-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}
.pages-list-dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);flex-shrink:0}

/* ===== STANDOUT ===== */
.so-card{padding:20px}
.so-icon{width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:16px;transition:transform .2s}
.so-card:hover .so-icon{transform:scale(1.08)}
.so-card h3{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:4px}
.so-card p{font-size:12px;color:var(--text-3);line-height:1.7}

/* ===== DELIVERABLES ===== */
.del-box{max-width:700px;margin:0 auto;padding:24px;background:var(--accent-bg)}
@media(min-width:640px){.del-box{padding:32px}}
.del-grid{display:grid;grid-template-columns:1fr;gap:10px}
@media(min-width:640px){.del-grid{grid-template-columns:repeat(2,1fr);column-gap:32px}}
.del-item{display:flex;align-items:flex-start;gap:8px;font-size:14px;color:var(--text-2)}
.del-item svg{width:14px;height:14px;flex-shrink:0;margin-top:3px;color:var(--accent)}
.del-quote{max-width:600px;margin:40px auto 0;text-align:center;font-size:15px;font-style:italic;color:var(--text-2);line-height:1.8}

/* ===== ABOUT ===== */
.about-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;max-width:500px;margin:0 auto 40px}
@media(min-width:480px){.about-stats{grid-template-columns:repeat(4,1fr)}}
.about-stat{text-align:center;padding:16px 8px}
.about-stat .val{font-size:20px;font-weight:700;color:var(--text-1)}
.about-stat .lbl{font-size:11px;color:var(--text-3);margin-top:2px}
.badges{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:40px}
.badge{display:flex;align-items:center;gap:6px;padding:6px 12px;border-radius:99px;font-size:12px;font-weight:500;color:var(--accent);background:var(--accent-bg);border:1px solid var(--border)}
.badge svg{width:12px;height:12px}
.services-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:40px}
.service-tag{display:flex;align-items:center;gap:6px;padding:8px 12px;font-size:12px;color:var(--text-2)}
.service-tag svg{width:13px;height:13px;color:var(--text-3)}
.process-grid{display:grid;grid-template-columns:1fr;gap:12px;margin-bottom:40px}
@media(min-width:640px){.process-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.process-grid{grid-template-columns:repeat(4,1fr)}}
.process-card{padding:20px;text-align:center}
.process-step{font-size:24px;font-weight:700;color:var(--accent);opacity:.3;margin-bottom:8px}
.process-card h4{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:4px}
.process-card p{font-size:12px;color:var(--text-3);line-height:1.7}
.about-text{max-width:600px;margin:0 auto;text-align:center;font-size:14px;color:var(--text-2);line-height:1.8}

/* ===== CONTACT ===== */
.contact-grid{display:grid;grid-template-columns:1fr;gap:16px;max-width:800px;margin:0 auto}
@media(min-width:768px){.contact-grid{grid-template-columns:1fr 1fr}}
.contact-info{padding:24px}
.contact-info h3{font-size:16px;font-weight:600;color:var(--text-1);margin-bottom:20px}
.contact-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:16px}
.contact-icon{width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--bg-muted);border:1px solid var(--border)}
.contact-icon svg{width:16px;height:16px}
.contact-label{font-size:11px;color:var(--text-3)}
.contact-val{font-size:14px;color:var(--text-2)}
.contact-right{display:flex;flex-direction:column;gap:16px}
.cta-card{padding:24px;background:var(--accent-bg);flex:1;display:flex;flex-direction:column;justify-content:center}
@media(min-width:640px){.cta-card{padding:32px}}
.cta-card h3{font-size:clamp(1.1rem,3vw,1.5rem);font-weight:700;color:var(--text-1);margin-bottom:12px}
.cta-card p{font-size:14px;color:var(--text-2);line-height:1.7;margin-bottom:24px}
.cta-btns{display:flex;flex-direction:column;gap:10px}
@media(min-width:480px){.cta-btns{flex-direction:row}}
.quote-card{padding:20px;text-align:center}
.quote-card p{font-size:12px;font-style:italic;color:var(--text-3)}

/* ===== FOOTER ===== */
.footer{padding:24px 0;border-top:1px solid var(--border)}
.footer-inner{display:flex;flex-direction:column;align-items:center;gap:12px;font-size:12px;color:var(--text-3)}
@media(min-width:640px){.footer-inner{flex-direction:row;justify-content:space-between}}
.footer-left{display:flex;align-items:center;gap:8px}
.footer-right{display:flex;align-items:center;gap:16px}
.footer a{color:var(--text-2)}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::selection{background:rgba(59,130,246,.25);color:var(--text-1)}