@font-face{font-family:Vazirmatn;src:url('../fonts/Vazirmatn-Regular.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:Vazirmatn;src:url('../fonts/Vazirmatn-Medium.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:Vazirmatn;src:url('../fonts/Vazirmatn-SemiBold.woff2') format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:Vazirmatn;src:url('../fonts/Vazirmatn-Bold.woff2') format('woff2');font-weight:700;font-display:swap}
@font-face{font-family:Vazirmatn;src:url('../fonts/Vazirmatn-ExtraBold.woff2') format('woff2');font-weight:800;font-display:swap}

:root{
  --navy:#004466;--navy-2:#005a80;--cyan:#0aa2c0;--cyan-2:#06b6d4;
  --ice:#e8f6fb;--bg:#f4f8fb;--card:#ffffff;--ink:#122a3a;--muted:#5a7080;
  --ok:#00a878;--err:#e05252;--warn:#f0a500;--line:#dce8ef;--grad:linear-gradient(135deg,#004466 0%,#0aa2c0 100%);
  --radius:14px;--shadow:0 6px 24px rgba(0,68,102,.10);--shadow-lg:0 16px 48px rgba(0,68,102,.18);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Vazirmatn,MyCustomFont,Tahoma,sans-serif;background:var(--bg);color:var(--ink);line-height:1.9;font-size:15.5px}
img{max-width:100%}
a{color:var(--cyan);text-decoration:none}
a:hover{color:var(--navy-2)}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
.section{padding:64px 0}
.section-head{text-align:center;max-width:640px;margin:0 auto 40px}
.section-head h2{font-size:1.9rem;color:var(--navy);margin-bottom:8px}
.section-head p{color:var(--muted)}
.badge{display:inline-block;background:var(--ice);color:var(--navy);border-radius:999px;padding:2px 14px;font-size:.8rem;font-weight:600;margin-bottom:10px}

/* ---------- هدر ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .25s}
.site-header.scrolled{box-shadow:var(--shadow)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{width:52px;height:auto}
.brand-logo.sm{width:40px}
.brand-text{display:flex;flex-direction:column;line-height:1.4}
.brand-text strong{color:var(--navy);font-size:1.05rem}
.brand-text small{color:var(--muted);font-size:.72rem}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{padding:8px 14px;border-radius:10px;color:var(--ink);font-weight:500;font-size:.95rem;transition:.2s}
.main-nav a:hover{background:var(--ice);color:var(--navy)}
.main-nav a.active{color:var(--cyan);font-weight:700}
.main-nav .nav-cta{background:var(--grad);color:#fff !important;font-weight:700}
.main-nav .nav-cta:hover{filter:brightness(1.1)}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;font-size:1.3rem;padding:4px 12px;cursor:pointer;color:var(--navy)}
@media(max-width:900px){
  .nav-toggle{display:block}
  .main-nav{position:fixed;inset:74px 0 auto 0;background:#fff;flex-direction:column;padding:16px;gap:4px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);transform:translateY(-130%);transition:.3s;z-index:99}
  .main-nav.open{transform:translateY(0)}
  .main-nav a{width:100%;text-align:center}
}

/* ---------- هیرو ---------- */
.hero{position:relative;overflow:hidden;background:var(--grad);color:#fff;padding:90px 0 110px}
.hero::before{content:"";position:absolute;inset:0;background:url('../img/brain-banner.jpg') center/cover;opacity:.16;mix-blend-mode:luminosity}
.hero::after{content:"";position:absolute;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.14),transparent 70%);top:-200px;left:-140px}
.hero-inner{position:relative;z-index:2;text-align:center;max-width:760px;margin:0 auto}
.hero h1{font-size:2.6rem;line-height:1.4;margin-bottom:14px}
.hero p{font-size:1.15rem;opacity:.92;margin-bottom:28px}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:12px;font-weight:700;font-size:.95rem;transition:.2s;border:none;cursor:pointer;font-family:inherit}
.btn-primary{background:#fff;color:var(--navy)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(0,0,0,.22)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.24)}
.btn-cyan{background:var(--grad);color:#fff}
.btn-cyan:hover{filter:brightness(1.12);transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--navy);border:1.5px solid var(--line)}
.btn-outline:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-danger{background:var(--err);color:#fff}
.btn-sm{padding:7px 16px;font-size:.85rem;border-radius:9px}

/* ---------- کارت‌ها ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.25s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--cyan)}
.card .icon{width:62px;height:62px;border-radius:16px;display:flex;align-items:center;justify-content:center;background:var(--ice);margin-bottom:16px}
.card .icon img{width:38px;height:38px;object-fit:contain}
.card h3{color:var(--navy);font-size:1.15rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.92rem}
.card .more{display:inline-block;margin-top:14px;font-weight:700;font-size:.88rem}
.card::after{content:"";position:absolute;bottom:0;right:0;width:100%;height:3px;background:var(--grad);transform:scaleX(0);transform-origin:right;transition:.3s}
.card:hover::after{transform:scaleX(1)}
.card-link{display:block;color:inherit}

/* ---------- نوار آمار ---------- */
.stats{background:var(--navy);color:#fff;padding:48px 0}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:24px;text-align:center}
.stat b{font-size:2.2rem;display:block;color:var(--cyan-2)}
.stat span{opacity:.85;font-size:.9rem}

/* ---------- پروژه‌ها ---------- */
.project-card{padding:0;overflow:hidden}
.project-cover{height:180px;background:var(--ice);display:flex;align-items:center;justify-content:center;font-size:2.6rem}
.project-cover img{width:100%;height:100%;object-fit:cover}
.project-body{padding:20px}
.tag{display:inline-block;background:var(--ice);color:var(--navy);border-radius:8px;padding:2px 10px;font-size:.75rem;font-weight:600;margin-left:6px}
.meta{color:var(--muted);font-size:.8rem;margin-top:8px}

/* ---------- بلاگ ---------- */
.post-card .cover{height:170px;border-radius:10px;overflow:hidden;background:var(--ice);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.post-card .cover img{width:100%;height:100%;object-fit:cover}
.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px}

/* ---------- محتوای مقاله ---------- */
.article{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:36px;max-width:860px;margin:0 auto}
.article h1{color:var(--navy);font-size:1.8rem;margin-bottom:10px}
.article .lead{color:var(--muted);font-size:1.05rem;margin-bottom:20px}
.article .content h2,.article .content h3{color:var(--navy);margin:22px 0 10px}
.article .content p{margin-bottom:12px}
.article .content ul,.article .content ol{margin:0 20px 12px}
.article .content img{border-radius:10px;margin:10px 0}
.article .content blockquote{border-right:4px solid var(--cyan);background:var(--ice);padding:12px 18px;border-radius:8px;margin:14px 0;color:var(--navy)}

/* ---------- فرم‌ها ---------- */
.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;max-width:640px;margin:0 auto;box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid .full{grid-column:1/-1}
label{display:block;font-weight:600;font-size:.88rem;margin-bottom:6px;color:var(--navy)}
input[type=text],input[type=email],input[type=tel],input[type=password],input[type=url],input[type=number],select,textarea{
  width:100%;padding:11px 14px;border:1.5px solid var(--line);border-radius:10px;font-family:inherit;font-size:.93rem;background:#fff;transition:.2s;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(10,162,192,.15)}
textarea{min-height:130px;resize:vertical}
.form-msg{padding:12px 16px;border-radius:10px;margin-bottom:14px;font-size:.9rem;display:none}
.form-msg.ok{display:block;background:#e6f7f1;color:var(--ok);border:1px solid #b7e6d4}
.form-msg.err{display:block;background:#fdecec;color:var(--err);border:1px solid #f5c6c6}

/* ---------- تماس ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:26px;align-items:start}
.contact-info{background:var(--grad);color:#fff;border-radius:var(--radius);padding:30px}
.contact-info h3{margin-bottom:16px}
.contact-info .row{display:flex;gap:12px;align-items:flex-start;margin-bottom:16px;font-size:.95rem}
.contact-info .row b{display:block;opacity:.8;font-weight:500;font-size:.8rem}
@media(max-width:820px){.contact-grid{grid-template-columns:1fr}}

/* ---------- فوتر ---------- */
.site-footer{background:var(--navy);color:#dbe9f2;margin-top:70px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;padding:48px 20px 30px}
.site-footer h4{color:#fff;margin-bottom:14px;font-size:1rem}
.site-footer a{display:block;color:#b9d2e0;padding:3px 0;font-size:.9rem}
.site-footer a:hover{color:var(--cyan-2)}
.site-footer .muted{color:#a9c3d2;font-size:.9rem}
.footer-bar{border-top:1px solid rgba(255,255,255,.12);text-align:center;padding:16px;font-size:.82rem;opacity:.85}
@media(max-width:820px){.footer-grid{grid-template-columns:1fr}}

/* ---------- چت فرزان‌یار ---------- */
.chat-fab{position:fixed;bottom:26px;left:26px;width:62px;height:62px;border-radius:50%;background:var(--grad);color:#fff;border:none;cursor:pointer;font-size:1.7rem;box-shadow:var(--shadow-lg);z-index:1000;display:flex;align-items:center;justify-content:center;transition:.25s}
.chat-fab:hover{transform:scale(1.08)}
.chat-fab .dot{position:absolute;top:2px;left:2px;width:14px;height:14px;border-radius:50%;background:var(--err);border:2px solid #fff;animation:pulse 1.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(224,82,82,.5)}70%{box-shadow:0 0 0 10px rgba(224,82,82,0)}100%{box-shadow:0 0 0 0 rgba(224,82,82,0)}}
.chat-fab.hidden{display:none}
.chat-panel{position:fixed;bottom:100px;left:26px;width:380px;max-width:calc(100vw - 40px);height:560px;max-height:calc(100vh - 130px);background:#fff;border-radius:18px;box-shadow:var(--shadow-lg);display:flex;flex-direction:column;z-index:1001;opacity:0;pointer-events:none;transform:translateY(16px) scale(.98);transition:.25s;overflow:hidden;border:1px solid var(--line)}
.chat-panel.open{opacity:1;pointer-events:auto;transform:none}
.chat-head{background:var(--grad);color:#fff;padding:16px 18px;display:flex;align-items:center;gap:12px}
.chat-head .avatar{width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;font-size:1.4rem}
.chat-head b{display:block;font-size:.98rem}
.chat-head small{opacity:.85;font-size:.75rem;display:flex;align-items:center;gap:5px}
.chat-head small::before{content:"";width:8px;height:8px;border-radius:50%;background:#4ade80;display:inline-block}
.chat-close{margin-right:auto;background:none;border:none;color:#fff;font-size:1.3rem;cursor:pointer;opacity:.85}
.chat-body{flex:1;overflow-y:auto;padding:16px;background:#f6fafc;display:flex;flex-direction:column;gap:10px}
.msg{max-width:82%;padding:10px 14px;border-radius:14px;font-size:.9rem;white-space:pre-wrap;word-wrap:break-word;animation:msgIn .25s}
@keyframes msgIn{from{opacity:0;transform:translateY(6px)}to{opacity:1}}
.msg.bot{background:#fff;border:1px solid var(--line);border-radius:14px 14px 14px 4px;align-self:flex-start}
.msg.user{background:var(--grad);color:#fff;border-radius:14px 14px 4px 14px;align-self:flex-end}
.msg.typing{opacity:.7}
.msg.typing span{display:inline-block;width:7px;height:7px;margin:0 1px;background:var(--muted);border-radius:50%;animation:blink 1.2s infinite}
.msg.typing span:nth-child(2){animation-delay:.2s}.msg.typing span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.25}40%{opacity:1}}
.chat-suggest{display:flex;gap:8px;flex-wrap:wrap;padding:0 16px 10px;background:#f6fafc}
.chat-suggest button{background:#fff;border:1.5px solid var(--cyan);color:var(--navy);border-radius:999px;padding:5px 13px;font-size:.78rem;cursor:pointer;font-family:inherit;transition:.2s}
.chat-suggest button:hover{background:var(--cyan);color:#fff}
.chat-foot{padding:12px;border-top:1px solid var(--line);display:flex;gap:8px;background:#fff}
.chat-foot input{flex:1;border:1.5px solid var(--line);border-radius:12px;padding:10px 14px;font-family:inherit;font-size:.9rem}
.chat-foot input:focus{outline:none;border-color:var(--cyan)}
.chat-foot button{background:var(--grad);color:#fff;border:none;border-radius:12px;width:46px;cursor:pointer;font-size:1.1rem}
.chat-powered{background:#fff;text-align:center;font-size:.68rem;color:var(--muted);padding:4px}
.chat-toast{position:fixed;bottom:100px;left:26px;max-width:320px;background:#fff;border:1px solid var(--line);border-right:4px solid var(--cyan);border-radius:12px;box-shadow:var(--shadow-lg);padding:14px 16px;z-index:999;cursor:pointer;animation:msgIn .3s;font-size:.88rem}
.chat-toast b{color:var(--navy);display:block;margin-bottom:4px}
.chat-toast.hide{display:none}
@media(max-width:520px){.chat-panel{left:12px;right:12px;width:auto;bottom:88px}.chat-fab{bottom:18px;left:18px}.chat-toast{left:18px;bottom:88px}}

/* ---------- صفحه‌بندی ---------- */
.pagination{display:flex;gap:6px;justify-content:center;margin-top:34px}
.pagination a,.pagination span{padding:8px 14px;border-radius:9px;border:1.5px solid var(--line);background:#fff;font-size:.88rem}
.pagination .cur{background:var(--grad);color:#fff;border-color:transparent}

/* ---------- ریسبانسیو عمومی ---------- */
@media(max-width:640px){
  .hero h1{font-size:1.7rem}
  .hero{padding:64px 0 80px}
  .section{padding:44px 0}
  .article{padding:22px}
}