/* ============================================================
   Dr. Seyedmostafa Safavi — Modern Dark Cyber Theme
   Shared stylesheet for all pages
   ============================================================ */

:root{
  --bg:#0a0e1a;
  --bg-2:#0f1524;
  --panel:#121a2e;
  --panel-2:#161f38;
  --line:#22304f;
  --text:#e7ecf5;
  --muted:#9aa8c4;
  --dim:#6b7896;
  --accent:#00e5c3;      /* teal */
  --accent-2:#38bdf8;    /* cyan */
  --accent-3:#7c5cff;    /* violet */
  --danger:#ff5c7a;
  --glow:0 0 24px rgba(0,229,195,.28);
  --radius:16px;
  --maxw:1180px;
  --font:'Space Grotesk',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono','SF Mono',ui-monospace,monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

/* Background grid + glow */
body::before{
  content:"";
  position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(900px 500px at 80% -10%, rgba(56,189,248,.10), transparent 60%),
    radial-gradient(800px 500px at 5% 15%, rgba(124,92,255,.10), transparent 55%),
    linear-gradient(180deg,#0a0e1a,#080b14);
}
body::after{
  content:"";
  position:fixed;inset:0;z-index:-1;opacity:.4;
  background-image:
    linear-gradient(rgba(34,48,79,.35) 1px,transparent 1px),
    linear-gradient(90deg,rgba(34,48,79,.35) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(ellipse 90% 60% at 50% 0%,#000 40%,transparent 85%);
}

a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(14px);
  background:rgba(10,14,26,.72);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;letter-spacing:.3px}
.brand .logo{
  width:40px;height:40px;border-radius:11px;flex:0 0 auto;
  display:grid;place-items:center;font-family:var(--mono);font-size:15px;
  color:#04121b;background:linear-gradient(135deg,var(--accent),var(--accent-2));
  box-shadow:var(--glow);
}
.brand small{display:block;font-weight:400;font-size:11px;color:var(--muted);letter-spacing:1.5px;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  padding:9px 15px;border-radius:10px;font-size:14.5px;color:var(--muted);
  transition:.18s;font-weight:500;
}
.nav-links a:hover{color:var(--text);background:var(--panel)}
.nav-links a.active{color:var(--accent);background:rgba(0,229,195,.08)}
.nav-cta{
  padding:9px 18px !important;color:#04121b !important;font-weight:600 !important;
  background:linear-gradient(135deg,var(--accent),var(--accent-2)) !important;
  box-shadow:var(--glow);
}
.nav-cta:hover{filter:brightness(1.08)}
.menu-btn{display:none;background:none;border:1px solid var(--line);color:var(--text);
  width:44px;height:44px;border-radius:11px;cursor:pointer;font-size:20px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;cursor:pointer;
  padding:13px 26px;border-radius:12px;font-weight:600;font-size:15px;
  border:1px solid transparent;transition:.18s;font-family:var(--font);
}
.btn-primary{color:#04121b;background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:var(--glow)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-ghost{border-color:var(--line);color:var(--text);background:var(--panel)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- Sections ---------- */
section{padding:88px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);
  font-size:12.5px;letter-spacing:2px;text-transform:uppercase;color:var(--accent);
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent)}
h1,h2,h3{line-height:1.15;font-weight:700;letter-spacing:-.5px}
h1{font-size:clamp(2.3rem,5vw,3.9rem)}
h2{font-size:clamp(1.9rem,3.6vw,2.8rem)}
.section-head{max-width:720px;margin-bottom:52px}
.section-head p{color:var(--muted);font-size:17px;margin-top:14px}
.text-grad{background:linear-gradient(120deg,var(--accent),var(--accent-2) 55%,var(--accent-3));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* ---------- Hero ---------- */
.hero{padding:70px 0 40px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero p.lead{color:var(--muted);font-size:19px;margin:22px 0 32px;max-width:560px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:34px}
.badge{
  font-family:var(--mono);font-size:12.5px;color:var(--muted);
  padding:7px 13px;border:1px solid var(--line);border-radius:999px;background:var(--panel);
}
.hero-visual{position:relative}
.portrait{
  width:100%;aspect-ratio:4/5;border-radius:20px;overflow:hidden;
  border:1px solid var(--line);background:
    linear-gradient(160deg,var(--panel),var(--bg-2));
  display:grid;place-items:center;position:relative;box-shadow:0 30px 80px rgba(0,0,0,.5);
}
.portrait img{width:100%;height:100%;object-fit:cover}
.portrait .ph{color:var(--dim);text-align:center;font-family:var(--mono);font-size:13px;padding:24px}
.portrait .ph b{display:block;color:var(--muted);font-size:15px;margin-bottom:6px;font-family:var(--font)}
.float-card{
  position:absolute;right:-14px;bottom:26px;background:rgba(18,26,46,.9);
  backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:14px;
  padding:14px 18px;box-shadow:0 20px 50px rgba(0,0,0,.5)
}
.float-card .n{font-size:24px;font-weight:700;color:var(--accent)}
.float-card .l{font-size:12px;color:var(--muted)}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;text-align:center}
.stat .n{font-size:2.4rem;font-weight:700;color:var(--accent);font-family:var(--mono)}
.stat .l{color:var(--muted);font-size:14px;margin-top:6px}

/* ---------- Cards / grid ---------- */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{
  background:linear-gradient(180deg,var(--panel),var(--bg-2));
  border:1px solid var(--line);border-radius:var(--radius);padding:30px;
  transition:.2s;position:relative;overflow:hidden;
}
.card:hover{border-color:rgba(0,229,195,.5);transform:translateY(-4px);box-shadow:0 20px 50px rgba(0,0,0,.4)}
.card .ico{
  width:50px;height:50px;border-radius:13px;display:grid;place-items:center;
  background:rgba(0,229,195,.1);border:1px solid rgba(0,229,195,.25);
  font-size:22px;margin-bottom:18px;
}
.card h3{font-size:1.22rem;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
.tools{display:flex;flex-direction:column;gap:7px;margin-top:4px}
.tools a{color:var(--accent-2);font-size:14.5px;transition:.15s;width:fit-content}
.tools a:hover{color:var(--accent);text-decoration:underline}

/* ---------- About specifics ---------- */
.prose{max-width:820px}
.prose p{color:var(--muted);font-size:16.5px;margin-bottom:18px}
.prose strong{color:var(--text)}
.timeline{position:relative;margin-top:20px;padding-left:30px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(var(--accent),transparent)}
.tl-item{position:relative;margin-bottom:30px}
.tl-item::before{content:"";position:absolute;left:-30px;top:6px;width:16px;height:16px;
  border-radius:50%;background:var(--bg);border:3px solid var(--accent);box-shadow:var(--glow)}
.tl-item .yr{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:1px}
.tl-item h3{font-size:1.12rem;margin:4px 0 6px}
.tl-item p{color:var(--muted);font-size:15px}

/* ---------- News page ---------- */
.news-toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:34px}
.chip{
  font-size:13.5px;font-family:var(--mono);padding:9px 15px;border-radius:999px;cursor:pointer;
  border:1px solid var(--line);background:var(--panel);color:var(--muted);transition:.15s
}
.chip:hover{color:var(--text);border-color:var(--accent)}
.chip.active{color:#04121b;background:linear-gradient(135deg,var(--accent),var(--accent-2));border-color:transparent;font-weight:600}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{
  display:flex;flex-direction:column;background:linear-gradient(180deg,var(--panel),var(--bg-2));
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s;
}
.news-card:hover{border-color:rgba(56,189,248,.5);transform:translateY(-4px);box-shadow:0 20px 50px rgba(0,0,0,.4)}
.news-card .body{padding:22px;display:flex;flex-direction:column;flex:1}
.news-card .src{font-family:var(--mono);font-size:11.5px;letter-spacing:1px;text-transform:uppercase;color:var(--accent);margin-bottom:10px}
.news-card h3{font-size:1.06rem;line-height:1.35;margin-bottom:10px}
.news-card p{color:var(--muted);font-size:14px;flex:1}
.news-card .foot{display:flex;justify-content:space-between;align-items:center;margin-top:16px;font-size:12.5px;color:var(--dim);font-family:var(--mono)}
.news-card .foot a{color:var(--accent-2)}
.news-status{text-align:center;padding:60px 20px;color:var(--muted)}
.spinner{width:38px;height:38px;border:3px solid var(--line);border-top-color:var(--accent);
  border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 18px}
@keyframes spin{to{transform:rotate(360deg)}}
.skeleton{height:190px;border-radius:var(--radius);background:linear-gradient(90deg,var(--panel),var(--panel-2),var(--panel));
  background-size:200% 100%;animation:sh 1.4s infinite;border:1px solid var(--line)}
@keyframes sh{to{background-position:-200% 0}}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info .row{display:flex;gap:16px;margin-bottom:26px;align-items:flex-start}
.contact-info .ico{flex:0 0 auto;width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  background:rgba(0,229,195,.1);border:1px solid rgba(0,229,195,.25);font-size:20px}
.contact-info .row h4{font-size:15px;margin-bottom:3px}
.contact-info .row p{color:var(--muted);font-size:14.5px}
.form-field{margin-bottom:18px}
.form-field label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:7px;font-family:var(--mono)}
.form-field input,.form-field textarea{
  width:100%;padding:13px 15px;border-radius:11px;background:var(--bg-2);
  border:1px solid var(--line);color:var(--text);font-family:var(--font);font-size:15px;transition:.15s
}
.form-field input:focus,.form-field textarea:focus{outline:none;border-color:var(--accent);box-shadow:var(--glow)}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(120deg,rgba(0,229,195,.12),rgba(124,92,255,.12));
  border:1px solid var(--line);border-radius:24px;padding:56px;text-align:center;
}
.cta-band h2{margin-bottom:14px}
.cta-band p{color:var(--muted);max-width:560px;margin:0 auto 28px;font-size:17px}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-2);padding:56px 0 30px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:36px}
.footer-grid h4{font-size:14px;margin-bottom:16px;color:var(--text)}
.footer-grid a,.footer-grid p{display:block;color:var(--muted);font-size:14px;margin-bottom:9px;transition:.15s}
.footer-grid a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--line);padding-top:24px;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:12px;color:var(--dim);font-size:13px}
.socials{display:flex;gap:10px}
.socials a{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--panel);color:var(--muted);transition:.18s}
.socials a:hover{color:var(--accent);border-color:var(--accent)}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:380px}
  .grid-3,.news-grid{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .nav-links{
    position:fixed;inset:72px 0 auto 0;flex-direction:column;align-items:stretch;
    background:rgba(10,14,26,.98);backdrop-filter:blur(14px);padding:16px 24px 24px;
    border-bottom:1px solid var(--line);gap:4px;display:none;
  }
  .nav-links.open{display:flex}
  .menu-btn{display:block}
  .grid-3,.grid-2,.news-grid,.stats{grid-template-columns:1fr}
  section{padding:60px 0}
  .cta-band{padding:36px 22px}
  .footer-grid{grid-template-columns:1fr}
}