*,*::before,*::after{box-sizing:border-box}

:root{
--font:"Vazirmatn",Tahoma,"Segoe UI",sans-serif;
--mono:"Roboto Mono",ui-monospace,Consolas,monospace;
--radius:14px;
--radius-lg:22px;
--transition:220ms ease;
--max:1200px;
}

[data-theme="night"]{
--bg:#101114;
--bg-2:#15171b;
--surface:rgba(255,255,255,.03);
--surface-2:#1a1c21;
--line:rgba(255,255,255,.08);
--line-strong:rgba(255,255,255,.14);
--ink:#eef1f6;
--muted:#8d95a3;
--faint:#5d6470;
--accent:#9dd3ff;
--accent-2:#b8a4ff;
--accent-soft:rgba(157,211,255,.1);
--glow-1:rgba(120,180,255,.14);
--glow-2:rgba(170,140,255,.10);
--btn-ink:#0b1320;
--ok:#6ee7b7;
--err:#fca5a5;
--shadow:0 30px 80px rgba(0,0,0,.45);
}

[data-theme="day"]{
--bg:#f5f7fb;
--bg-2:#eef2f8;
--surface:rgba(255,255,255,.75);
--surface-2:#ffffff;
--line:rgba(20,30,50,.09);
--line-strong:rgba(20,30,50,.16);
--ink:#141a24;
--muted:#5b6474;
--faint:#8a92a0;
--accent:#2f78c4;
--accent-2:#7359d6;
--accent-soft:rgba(47,120,196,.08);
--glow-1:rgba(80,150,230,.16);
--glow-2:rgba(140,110,240,.12);
--btn-ink:#ffffff;
--ok:#0f766e;
--err:#b91c1c;
--shadow:0 24px 60px rgba(30,50,90,.12);
}

html{scroll-behavior:smooth}

body{
margin:0;
font-family:var(--font);
background:var(--bg);
color:var(--ink);
line-height:1.8;
-webkit-font-smoothing:antialiased;
transition:background var(--transition),color var(--transition);
}

a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
code{font-family:var(--mono);font-size:.82em;background:var(--accent-soft);padding:2px 6px;border-radius:6px;direction:ltr;unicode-bidi:embed;word-break:break-all}
.mono{font-family:var(--mono);letter-spacing:.06em}
.accent{color:var(--accent)}

.app-shell{position:relative;min-height:100vh;overflow-x:clip}
.ambient{
position:absolute;inset:0 0 auto 0;height:900px;pointer-events:none;z-index:0;
background:
radial-gradient(600px 400px at 20% 10%,var(--glow-1),transparent 70%),
radial-gradient(500px 380px at 85% 30%,var(--glow-2),transparent 70%);
}
.container{width:min(var(--max),100% - 48px);margin-inline:auto;position:relative;z-index:1}

/* ---------- header ---------- */
.site-header{
position:sticky;top:0;z-index:50;
display:flex;align-items:center;justify-content:space-between;gap:20px;
padding:14px max(24px,calc((100% - var(--max))/2));
background:color-mix(in srgb,var(--bg) 78%,transparent);
backdrop-filter:blur(14px);
border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
font-family:var(--mono);font-weight:600;font-size:14px;color:var(--btn-ink);
background:linear-gradient(135deg,var(--accent),var(--accent-2));
}
.brand-name{font-family:var(--mono);font-weight:600;font-size:12px;letter-spacing:.14em;color:var(--ink)}
.nav-links{display:flex;gap:4px;flex-wrap:wrap}
.nav-links a{padding:6px 12px;border-radius:8px;font-size:14px;font-weight:500;color:var(--muted);transition:color var(--transition),background var(--transition)}
.nav-links a:hover{color:var(--ink);background:var(--accent-soft)}
.header-actions{display:flex;align-items:center;gap:8px}
.theme-toggle,.resume-link{
font:inherit;font-size:13px;font-weight:600;cursor:pointer;
padding:7px 14px;border-radius:9px;border:1px solid var(--line-strong);
background:transparent;color:var(--ink);transition:border-color var(--transition),background var(--transition);
}
.theme-toggle:hover,.resume-link:hover{border-color:var(--accent);background:var(--accent-soft)}

/* ---------- buttons ---------- */
.btn{
display:inline-flex;align-items:center;justify-content:center;gap:8px;
font:inherit;font-size:15px;font-weight:600;cursor:pointer;
padding:12px 22px;border-radius:11px;border:1px solid transparent;
transition:transform var(--transition),box-shadow var(--transition),background var(--transition),border-color var(--transition);
}
.btn-primary{background:var(--accent);color:var(--btn-ink)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px var(--glow-1)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--accent);background:var(--accent-soft)}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}

/* ---------- hero ---------- */
.hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:56px;align-items:center;padding:88px 0 64px}
.availability{
display:inline-flex;align-items:center;gap:10px;
font-size:13px;color:var(--muted);
padding:6px 14px;border:1px solid var(--line);border-radius:999px;background:var(--surface);
}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px color-mix(in srgb,var(--ok) 20%,transparent);flex:none;animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{50%{box-shadow:0 0 0 7px color-mix(in srgb,var(--ok) 6%,transparent)}}
.hero h1{font-size:clamp(38px,5.4vw,64px);line-height:1.2;font-weight:800;margin:26px 0 8px;letter-spacing:-.01em}
.role{font-family:var(--mono);font-size:15px;color:var(--accent);margin-bottom:22px;text-align:right}
.tagline{font-size:21px;font-weight:500;margin:0 0 14px;line-height:1.7}
.intro{color:var(--muted);font-size:15.5px;max-width:560px;margin:0 0 32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}

.hero-visual{position:relative;padding:28px 0 36px}
.visual-frame{border:1px solid var(--line-strong);border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-2);box-shadow:var(--shadow)}
.visual-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line)}
.visual-header .tag{font-size:11px;color:var(--muted)}
.window-controls{display:flex;gap:6px}
.window-controls i{width:9px;height:9px;border-radius:50%;background:var(--line-strong)}
.visual-frame img{width:100%;aspect-ratio:4/3;object-fit:cover}
[data-theme="day"] .visual-frame img{filter:saturate(.9) brightness(1.05)}

.float-card{
position:absolute;padding:14px 16px;border-radius:14px;
background:color-mix(in srgb,var(--surface-2) 88%,transparent);backdrop-filter:blur(12px);
border:1px solid var(--line-strong);box-shadow:var(--shadow);
}
.eval-card{inset-inline-end:-18px;bottom:0;width:250px}
.card-head{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);margin-bottom:10px}
.progress{height:5px;border-radius:5px;background:var(--line);overflow:hidden}
.progress span{display:block;height:100%;border-radius:5px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.card-detail{font-size:10.5px;color:var(--muted);margin-top:10px;text-align:left}
.latency-card{inset-inline-start:-22px;top:0}
.latency-value{font-size:22px;font-weight:600;color:var(--ink);letter-spacing:0}
.latency-label{font-size:10px;color:var(--muted)}

/* ---------- metrics ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);border-block:1px solid var(--line);margin-bottom:40px}
.metric{padding:28px 24px;display:flex;flex-direction:column;gap:2px}
.metric+.metric{border-inline-start:1px solid var(--line)}
.metric strong{font-size:32px;font-weight:700;line-height:1.3;color:var(--ink)}
.metric span{font-weight:600;font-size:14px}
.metric small{color:var(--muted);font-size:12.5px}

/* ---------- sections ---------- */
.section{padding:72px 0}
.section-label{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600;color:var(--accent);margin-bottom:18px}
.section-label .mono{font-size:12px;color:var(--faint)}
.section-label i{width:28px;height:1px;background:var(--line-strong)}
.section-head{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:end;margin-bottom:40px}
.section-head h2,.statement{font-size:clamp(26px,3.2vw,38px);line-height:1.45;font-weight:700;margin:0}
.section-head p{color:var(--muted);margin:0}
.num{font-size:11px;color:var(--faint);font-weight:400}

/* about */
.about{display:grid;grid-template-columns:1fr 1fr;gap:64px}
.bio{font-size:16px;margin:20px 0 0}
.muted{color:var(--muted)}
.capabilities{display:grid;gap:12px;align-content:start}
.capability{
display:flex;gap:16px;padding:20px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);
transition:border-color var(--transition),transform var(--transition);
}
.capability:hover{border-color:var(--line-strong);transform:translateX(-3px)}
.icon-box{flex:none;width:42px;height:42px;border-radius:11px;display:grid;place-items:center;font-size:18px;color:var(--accent);background:var(--accent-soft);border:1px solid var(--line)}
.capability h3{margin:0 0 4px;font-size:16px;display:flex;justify-content:space-between;gap:10px}
.capability p{margin:0;color:var(--muted);font-size:14px}
.operating-note{display:flex;align-items:center;gap:12px;font-size:11px;color:var(--muted);padding:14px 4px 0}
.operating-note i{width:3px;height:18px;border-radius:2px;background:var(--accent)}

/* skills */
.skill-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.skill-group{padding:26px;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface)}
.group-head{display:flex;align-items:center;gap:12px}
.group-head h3{margin:0;font-size:17px;flex:1}
.group-icon{width:34px;height:34px;display:grid;place-items:center;border-radius:9px;color:var(--accent);background:var(--accent-soft);font-size:16px}
.skill-group>p{color:var(--muted);font-size:14px;margin:10px 0 18px}
.tags{display:flex;flex-wrap:wrap;gap:6px}
.tags span{font-family:var(--mono);font-size:11.5px;padding:4px 10px;border-radius:7px;border:1px solid var(--line);color:var(--muted);background:var(--bg-2)}

/* timeline */
.timeline{border-top:1px solid var(--line)}
.timeline-item{display:grid;grid-template-columns:180px 24px 1fr;gap:24px;padding:32px 0;border-bottom:1px solid var(--line)}
.period{font-size:12px;color:var(--accent);padding-top:4px;text-align:right}
.point{position:relative}
.point::before{content:"";position:absolute;top:10px;inset-inline-start:7px;width:10px;height:10px;border-radius:50%;background:var(--bg);border:2px solid var(--accent)}
.role-details h3{margin:0 0 8px;font-size:20px}
.role-details p{margin:0 0 14px;color:var(--muted)}

/* projects */
.featured-project{
display:grid;grid-template-columns:1fr 1.15fr;gap:0;overflow:hidden;
border:1px solid var(--line-strong);border-radius:var(--radius-lg);background:var(--surface);margin-bottom:16px;
}
.project-copy{padding:36px;display:flex;flex-direction:column;gap:16px}
.project-meta{display:flex;justify-content:space-between;font-size:11px;color:var(--faint)}
.featured-project h3{font-size:28px;margin:0;text-align:right}
.project-copy p{margin:0;color:var(--muted)}
.case-link{margin-top:auto;color:var(--accent);font-weight:600;font-size:14px}
.case-link:hover{text-decoration:underline}
.project-visual{position:relative;min-height:320px;border-inline-start:1px solid var(--line)}
.project-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.trace{
position:absolute;left:18px;bottom:18px;width:220px;padding:14px;border-radius:12px;font-size:11px;
background:color-mix(in srgb,var(--surface-2) 85%,transparent);backdrop-filter:blur(10px);border:1px solid var(--line-strong);
}
.trace-head{display:flex;justify-content:space-between;color:var(--muted);margin-bottom:8px}
.trace-step{display:flex;align-items:center;gap:8px;padding:5px 0;color:var(--ink)}
.trace-step i{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.trace-step span{margin-left:auto;color:var(--faint)}

.project-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.project-card{
display:flex;flex-direction:column;gap:10px;padding:22px;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);
transition:border-color var(--transition),transform var(--transition);
}
.project-card:hover{border-color:var(--accent);transform:translateY(-3px)}
.diagram{height:130px;border-radius:12px;background:var(--bg-2);border:1px solid var(--line);padding:12px;display:flex;flex-direction:column;margin-bottom:6px}
.diagram-head{display:flex;justify-content:space-between;font-size:10px;color:var(--faint)}
.nodes{flex:1;display:flex;align-items:center;justify-content:space-between;gap:6px;position:relative}
.nodes::before{content:"";position:absolute;left:10%;right:10%;top:50%;height:1px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.nodes span{position:relative;font-size:10.5px;padding:5px 9px;border-radius:7px;background:var(--surface-2);border:1px solid var(--line-strong);color:var(--ink)}
.bars{flex:1;display:flex;align-items:flex-end;gap:8px;padding-top:10px}
.bars i{flex:1;border-radius:4px 4px 0 0;background:linear-gradient(180deg,var(--accent),color-mix(in srgb,var(--accent-2) 40%,transparent))}
.project-kind{font-size:10.5px;color:var(--accent)}
.project-card h3{margin:0;font-size:18px;text-align:right}
.project-card p{margin:0;color:var(--muted);font-size:14px;flex:1}
.project-footer{display:flex;justify-content:space-between;align-items:center;gap:10px;padding-top:12px;border-top:1px solid var(--line)}
.project-footer a{width:32px;height:32px;flex:none;display:grid;place-items:center;border-radius:8px;border:1px solid var(--line-strong);color:var(--accent)}
.project-footer a:hover{background:var(--accent-soft)}

/* approach */
.principles{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.principle{padding:24px 20px;background:var(--surface);position:relative}
.principle+.principle{border-inline-start:1px solid var(--line)}
.principle::before{content:"";position:absolute;top:0;inset-inline:20px;height:2px;background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:.5}
.principle h3{margin:10px 0 6px;font-size:17px}
.principle p{margin:0;color:var(--muted);font-size:13.5px}
.principle-note{display:flex;align-items:center;gap:20px;margin-top:16px;padding:18px 22px;border-radius:var(--radius);background:var(--accent-soft);border:1px solid var(--line)}
.principle-note .mono{font-size:11px;color:var(--accent);flex:none}
.principle-note p{margin:0;font-weight:600}

/* contact */
.contact-callout{
position:relative;overflow:hidden;display:grid;grid-template-columns:1.3fr 1fr;gap:40px;
padding:48px;border-radius:28px;border:1px solid var(--line-strong);background:var(--bg-2);
}
.contact-glow{position:absolute;inset:-40% -10% auto auto;width:600px;height:600px;background:radial-gradient(circle,var(--glow-1),transparent 65%);pointer-events:none}
.contact-message{position:relative}
.contact-message h2{font-size:clamp(28px,3.4vw,42px);line-height:1.4;margin:22px 0 14px}
.contact-message p{color:var(--muted);margin:0 0 28px;max-width:520px}
.contact-card{position:relative;padding:22px;border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--line)}
.card-title{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--muted);padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:6px}
.contact-link{display:flex;align-items:center;gap:14px;padding:10px 6px;border-radius:10px;transition:background var(--transition)}
.contact-link:hover{background:var(--accent-soft)}
.c-icon{width:34px;height:34px;flex:none;display:grid;place-items:center;border-radius:9px;font-family:var(--mono);font-size:12px;font-weight:600;color:var(--accent);border:1px solid var(--line-strong)}
.contact-link small{display:block;font-size:11.5px;color:var(--muted);line-height:1.4}
.contact-link b{font-size:14px;font-weight:600;word-break:break-all}

/* forms */
.forms{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding-top:0}
.form-card{padding:30px;border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--surface);scroll-margin-top:90px}
.note{color:var(--muted);font-size:14px;margin:0 0 20px}
.form-grid{display:grid;gap:14px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field label{display:block;margin-bottom:6px;font-size:13px;font-weight:600;color:var(--muted)}
.field input,.field textarea{
width:100%;font:inherit;font-size:14px;color:var(--ink);
padding:11px 14px;border-radius:10px;border:1px solid var(--line-strong);background:var(--bg);
transition:border-color var(--transition),box-shadow var(--transition);
}
.field textarea{min-height:100px;resize:vertical}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.field input[type=file]{padding:9px}
.status{min-height:20px;font-size:13px}
.status.success{color:var(--ok)}
.status.error{color:var(--err)}

/* footer */
.site-footer{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;padding:36px 0 110px;border-top:1px solid var(--line);margin-top:40px}
.footer-identity{display:flex;flex-direction:column}
.footer-identity .mono,.footer-meta{font-size:11px;color:var(--faint)}
.footer-links{display:flex;gap:20px;font-size:14px;color:var(--muted)}
.footer-links a:hover{color:var(--accent)}

/* ---------- chat ---------- */
.chat-fab{
position:fixed;bottom:22px;left:22px;z-index:90;
font:inherit;font-size:14px;font-weight:600;cursor:pointer;
padding:12px 20px;border-radius:999px;border:1px solid var(--line-strong);
background:var(--accent);color:var(--btn-ink);box-shadow:var(--shadow);
transition:transform var(--transition);
}
.chat-fab:hover{transform:translateY(-2px)}
.chat-panel{
position:fixed;left:22px;bottom:80px;z-index:90;
width:min(380px,calc(100vw - 32px));height:min(560px,calc(100vh - 120px));
display:none;flex-direction:column;
border-radius:var(--radius-lg);border:1px solid var(--line-strong);
background:var(--surface-2);box-shadow:var(--shadow);overflow:hidden;
}
.chat-panel.open{display:flex;animation:rise .22s ease}
@keyframes rise{from{opacity:0;transform:translateY(10px)}}
.chat-header{padding:18px;border-bottom:1px solid var(--line)}
.chat-header h2{margin:0 0 6px;font-size:16px;display:flex;align-items:center;gap:10px}
.chat-header p{margin:0;font-size:12px;color:var(--muted);line-height:1.75}
.chat-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px}
.msg{max-width:88%;padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.8;white-space:pre-wrap;word-break:break-word}
.msg.bot{align-self:flex-start;background:var(--bg-2);border:1px solid var(--line)}
.msg.user{align-self:flex-end;background:var(--accent-soft);border:1px solid var(--line-strong)}
.msg.typing{color:var(--muted);font-style:italic}
.chat-input-wrap{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line)}
.chat-input-wrap input{flex:1;min-width:0;font:inherit;font-size:14px;padding:10px 12px;border-radius:10px;border:1px solid var(--line-strong);background:var(--bg);color:var(--ink)}
.chat-input-wrap input:focus{outline:none;border-color:var(--accent)}
.chat-send{font:inherit;font-weight:600;font-size:14px;padding:0 16px;border-radius:10px;border:0;cursor:pointer;background:var(--accent);color:var(--btn-ink)}
.chat-send:disabled{opacity:.55;cursor:not-allowed}

/* ---------- responsive ---------- */
@media(max-width:1024px){
.nav-links{display:none}
.hero{grid-template-columns:1fr;gap:40px;padding-top:56px}
.hero-visual{max-width:620px}
.eval-card{inset-inline-end:8px}
.latency-card{inset-inline-start:8px}
.about,.section-head,.contact-callout,.featured-project{grid-template-columns:1fr}
.about{gap:36px}
.section-head{gap:14px}
.project-visual{min-height:280px;border-inline-start:0;border-top:1px solid var(--line)}
.project-row{grid-template-columns:1fr 1fr}
.principles{grid-template-columns:1fr 1fr}
.principle+.principle{border-inline-start:0}
.principle{border-top:1px solid var(--line)}
.metrics{grid-template-columns:1fr 1fr}
.metric:nth-child(3){border-inline-start:0}
.metric:nth-child(n+3){border-top:1px solid var(--line)}
.forms{grid-template-columns:1fr}
}
@media(max-width:640px){
.container{width:calc(100% - 32px)}
.site-header{padding:12px 16px}
.brand-name{display:none}
.section{padding:52px 0}
.skill-grid,.project-row,.principles,.field-row{grid-template-columns:1fr}
.timeline-item{grid-template-columns:1fr;gap:6px}
.point{display:none}
.metric{padding:20px 14px}
.metric strong{font-size:26px}
.contact-callout{padding:26px}
.project-copy,.form-card{padding:22px}
.principle-note{flex-direction:column;align-items:flex-start;gap:6px}
.eval-card{width:210px}
.role{font-size:13px}
.chat-fab{left:16px;bottom:16px}
.chat-panel{left:16px;bottom:72px}
}

/* ---------- project demos ---------- */
.btn-sm{padding:9px 16px;font-size:14px}
.project-links{margin-top:auto;display:flex;flex-wrap:wrap;align-items:center;gap:18px}
.project-links .case-link{margin-top:0}
.card-actions{display:flex;gap:6px;flex:none}
.demo-btn{font:inherit;font-size:13px;font-weight:600;cursor:pointer;height:32px;padding:0 12px;border-radius:8px;border:1px solid var(--accent);background:var(--accent-soft);color:var(--accent);transition:background var(--transition),color var(--transition)}
.demo-btn:hover{background:var(--accent);color:var(--btn-ink)}

.demo-modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:24px}
.demo-modal.open{display:flex}
.demo-backdrop{position:absolute;inset:0;background:rgba(5,6,8,.72);backdrop-filter:blur(6px)}
.demo-window{position:relative;width:min(1080px,100%);max-height:calc(100vh - 48px);display:flex;flex-direction:column;border-radius:var(--radius-lg);border:1px solid var(--line-strong);background:var(--surface-2);box-shadow:var(--shadow);overflow:hidden;animation:rise .25s ease}
.demo-top{display:flex;align-items:center;gap:14px;padding:12px 16px;border-bottom:1px solid var(--line)}
.demo-title{flex:1;font-size:13px;text-align:center}
.demo-close{width:30px;height:30px;border-radius:8px;border:1px solid var(--line-strong);background:transparent;color:var(--ink);cursor:pointer}
.demo-close:hover{border-color:var(--accent)}
.demo-tabs{display:flex;gap:6px;padding:10px 16px 0}
.demo-tab{font:inherit;font-size:13px;font-weight:600;cursor:pointer;padding:6px 14px;border-radius:8px;border:1px solid transparent;background:transparent;color:var(--muted)}
.demo-tab.active{color:var(--accent);background:var(--accent-soft);border-color:var(--line)}
.demo-body{padding:16px;overflow:auto}
.demo-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:16px;align-items:stretch}
.demo-stage{position:relative;min-height:440px;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--bg-2)}
.demo-canvas{position:absolute;inset:0;width:100%;height:100%}
.demo-badge{position:absolute;left:10px;bottom:10px;font-size:10.5px;padding:4px 8px;border-radius:6px;background:rgba(0,0,0,.55);color:#cbd5e1}
.demo-side{display:flex;flex-direction:column;gap:12px;min-width:0}
.demo-lead{margin:0;font-size:14px;color:var(--muted)}
.demo-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.demo-stats div{padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--bg-2)}
.demo-stats small{display:block;font-size:11px;color:var(--muted);direction:ltr;text-align:left}
.demo-stats b{font-size:17px;display:block;direction:ltr;text-align:left}
.demo-chart-label{font-size:10.5px;color:var(--faint);direction:ltr;text-align:left}
.demo-chart{width:100%;height:90px;border-radius:10px;border:1px solid var(--line);background:var(--bg-2)}
.demo-log{flex:1;min-height:110px;max-height:190px;overflow:auto;font-size:11.5px;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--muted);text-align:left}
.demo-log span{color:var(--accent)}
.demo-log .ok{color:var(--ok)}
.demo-video{width:100%;max-height:70vh;border-radius:14px;background:#000}
.demo-note{font-size:12px;color:var(--faint)}
.req-list{display:grid;gap:6px}
.req-btn{display:flex;gap:10px;align-items:center;text-align:left;direction:ltr;font-size:12.5px;cursor:pointer;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--bg-2);color:var(--ink);transition:border-color var(--transition)}
.req-btn:hover,.req-btn.active{border-color:var(--accent)}
.verb{font-size:10.5px;font-weight:600;padding:2px 6px;border-radius:5px;flex:none}
.verb.get{background:rgba(110,231,183,.15);color:var(--ok)}
.verb.post{background:rgba(252,211,77,.15);color:#f59e0b}
.demo-console{display:flex;flex-direction:column;min-height:440px;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#0b0c0f}
.console-bar{display:flex;justify-content:space-between;font-size:11px;padding:10px 14px;border-bottom:1px solid rgba(255,255,255,.08);color:#8d95a3}
.console-out{flex:1;margin:0;padding:14px;font-size:12px;line-height:1.65;color:#d7dde8;overflow:auto;max-height:520px;white-space:pre-wrap;word-break:break-word}
@media(max-width:820px){
.demo-modal{padding:10px}
.demo-grid{grid-template-columns:1fr}
.demo-stage{min-height:320px}
.demo-console{min-height:320px}
}

/* ---------- calm pass: less chrome, more whitespace ---------- */
.ambient{opacity:.55}
.site-header{padding-block:18px}
.brand-name{font-family:var(--font);letter-spacing:0;font-size:15px;font-weight:700}
.nav-links a{font-size:14.5px}
.hero{padding:120px 0 96px;gap:72px}
.hero h1{margin-top:28px}
.tagline{color:var(--muted);margin-bottom:36px}
.hero-visual{padding:0}
.visual-frame{box-shadow:none}
.metrics{margin-bottom:24px}
.metric{padding:32px 24px}
.section{padding:112px 0}
.section-label{font-size:13px;margin-bottom:14px}
.section-head{margin-bottom:48px}
.about{grid-template-columns:1fr;max-width:760px}
.skill-group,.project-card,.capability{background:transparent}
.group-head{margin-bottom:18px}
.featured-project{border-color:var(--line)}
.project-card:hover{transform:none}
.forms{padding-top:24px}
@media(max-width:640px){.hero{padding:64px 0 56px}.section{padding:72px 0}}

/* ---------- creative layer ---------- */
.app-shell::before{
content:"";position:absolute;inset:0 0 auto 0;height:1100px;pointer-events:none;z-index:0;
background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
background-size:56px 56px;
-webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 20%,#000 30%,transparent 75%);
mask-image:radial-gradient(ellipse 70% 60% at 50% 20%,#000 30%,transparent 75%);
}
.ambient{opacity:.9;animation:drift 18s ease-in-out infinite alternate}
@keyframes drift{to{transform:translate3d(-40px,30px,0) scale(1.08)}}

.h1-small{display:block;font-size:.36em;font-weight:500;color:var(--muted);margin-bottom:6px}
.grad-text{
background:linear-gradient(100deg,var(--ink) 0%,var(--accent) 40%,var(--accent-2) 60%,var(--ink) 100%);
background-size:220% auto;-webkit-background-clip:text;background-clip:text;color:transparent;
animation:shine 7s linear infinite;
}
@keyframes shine{to{background-position:-220% center}}

.hero-visual::before{
content:"";position:absolute;inset:-8%;z-index:-1;border-radius:50%;
background:conic-gradient(from 0deg,var(--accent),var(--accent-2),transparent 60%,var(--accent));
filter:blur(70px);opacity:.28;animation:spin 16s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.visual-frame{border-radius:32px 32px 32px 120px;transition:transform .25s ease-out;will-change:transform}

.marquee{position:relative;z-index:1;overflow:hidden;padding:22px 0;margin:8px 0 0;border-block:1px solid var(--line);
-webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee-track{display:flex;gap:28px;width:max-content;animation:scrollx 38s linear infinite;font-family:var(--mono);font-size:15px;color:var(--muted);align-items:center}
.marquee-track i{font-style:normal;color:var(--accent);font-size:11px}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes scrollx{to{transform:translateX(-50%)}}

.section-head h2,.statement{letter-spacing:-.01em}
.section-label{display:inline-flex;padding:4px 12px;border-radius:999px;background:var(--accent-soft);border:1px solid var(--line)}

.spot{position:relative;isolation:isolate}
.spot::after{
content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;z-index:-1;opacity:0;transition:opacity .3s;
background:radial-gradient(320px circle at var(--mx,50%) var(--my,50%),var(--accent-soft),transparent 70%);
}
.spot:hover::after{opacity:1}
.skill-group:hover,.project-card:hover{border-color:color-mix(in srgb,var(--accent) 45%,transparent)}
.featured-project .project-visual img{transition:transform .8s ease}
.featured-project:hover .project-visual img{transform:scale(1.05)}

.btn-primary{background:linear-gradient(120deg,var(--accent),var(--accent-2));}
.contact-callout{background:radial-gradient(120% 140% at 100% 0%,var(--accent-soft),transparent 55%),var(--bg-2)}

.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
.ambient,.grad-text,.hero-visual::before,.marquee-track{animation:none}
.reveal{opacity:1;transform:none}
}

/* ---------- creative layer 2 ---------- */
.nav-links{position:relative;flex-wrap:nowrap;padding:4px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.nav-links a{position:relative;z-index:1;white-space:nowrap}
.nav-links a.active{color:var(--ink)}
.nav-links a:hover{background:transparent}
.nav-pill{position:absolute;top:4px;bottom:4px;left:0;border-radius:8px;background:var(--accent-soft);border:1px solid var(--line-strong);opacity:0;pointer-events:none;transition:transform .35s cubic-bezier(.3,.7,.2,1),width .35s cubic-bezier(.3,.7,.2,1),opacity .2s}
.nav-ext{color:var(--accent)!important}
.nav-ext::after{content:" ↗";font-size:.8em}
@media(max-width:1200px){.nav-links a{padding:6px 9px;font-size:13.5px}}

.role{display:inline-block;padding:6px 14px;border-radius:10px;background:var(--bg-2);border:1px solid var(--line)}
.caret{margin-left:2px;color:var(--accent-2);animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

.cursor-glow{position:fixed;top:0;left:0;width:400px;height:400px;border-radius:50%;pointer-events:none;z-index:0;opacity:0;
background:radial-gradient(circle,var(--glow-1),transparent 65%);transition:opacity .4s;will-change:transform}
.btn,.chat-fab{transition:transform .2s ease-out,box-shadow var(--transition),background var(--transition),border-color var(--transition)}

/* giant ghost numbers behind section headings */
main{counter-reset:sec}
.section-head{position:relative;counter-increment:sec}
.section-head::before{
content:"0" counter(sec);position:absolute;top:-70px;inset-inline-start:-10px;z-index:-1;
font-family:var(--mono);font-size:150px;font-weight:600;line-height:1;
color:transparent;-webkit-text-stroke:1px var(--line-strong);opacity:.7;pointer-events:none;
}

.metric strong{background:linear-gradient(120deg,var(--ink),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.timeline-item{transition:background var(--transition),padding var(--transition)}
.timeline-item:hover{background:linear-gradient(90deg,transparent,var(--accent-soft));padding-inline-start:12px}
.point::before{box-shadow:0 0 0 0 var(--accent);transition:box-shadow .3s}
.timeline-item:hover .point::before{box-shadow:0 0 0 6px var(--accent-soft);background:var(--accent)}
.tags span{transition:color .2s,border-color .2s,transform .2s}
.tags span:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-2px)}
@media(max-width:640px){.section-head::before{font-size:90px;top:-40px}}
@media (prefers-reduced-motion: reduce){.caret{animation:none}}

/* chat/upload live in the header; show them in the footer only when the nav is hidden */
.footer-links .mobile-only{display:none}
@media(max-width:1024px){.footer-links .mobile-only{display:inline}.footer-links{flex-wrap:wrap}}

/* ---------- Language switch (FA / EN) ---------- */
.lang-toggle{font-family:var(--font);font-weight:700;min-width:44px}
html[lang="en"]{--font:"Inter","Segoe UI",system-ui,sans-serif}
html[dir="ltr"] .role,
html[dir="ltr"] .period,
html[dir="ltr"] .featured-project h3,
html[dir="ltr"] .project-card h3{text-align:left}
html[dir="ltr"] .h1-small{letter-spacing:0}