/* ============================================================
   SAHAD.DEV — single-file bilingual portfolio
   Sections: tokens · base · layout · navbar · hero · sections ·
             skills · projects · contact · footer · chatbot
   ============================================================ */

/* ---------- Design tokens ---------- */
:root{
  --font-main:'Hind Siliguri','Segoe UI',system-ui,-apple-system,'Noto Sans Bengali',sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --acc:#22d3ee;
  --acc-2:#818cf8;
  --acc-3:#34d399;
  --acc-soft:rgba(34,211,238,.14);

  --r-lg:22px;
  --r-md:16px;
  --r-sm:10px;

  --maxw:1180px;
  --nav-h:72px;

  --ease:cubic-bezier(.22,1,.36,1);
  --shadow-1:0 10px 30px -12px rgba(0,0,0,.55);
  --shadow-2:0 30px 70px -30px rgba(0,0,0,.75);
}

html[data-theme="dark"]{
  --bg:#070c14;
  --bg-2:#0b1220;
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.07);
  --border:rgba(255,255,255,.10);
  --border-strong:rgba(34,211,238,.35);
  --text:#e9f1f7;
  --muted:#94a6b8;
  --grid-line:rgba(255,255,255,.05);
  --nav-bg:rgba(7,12,20,.72);
  --card-bg:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --chip-bg:rgba(255,255,255,.06);
  --user-bubble:linear-gradient(135deg,#22d3ee,#818cf8);
  --user-bubble-text:#04121a;
  --bot-bubble:rgba(255,255,255,.07);
  --code-bg:rgba(0,0,0,.45);
  --shadow-glow:0 0 0 1px rgba(34,211,238,.18), 0 18px 50px -22px rgba(34,211,238,.45);
}
html[data-theme="light"]{
  --bg:#f2f6fa;
  --bg-2:#e9f0f7;
  --surface:rgba(255,255,255,.75);
  --surface-2:rgba(255,255,255,.95);
  --border:rgba(9,32,52,.12);
  --border-strong:rgba(8,145,178,.45);
  --text:#0d1b2a;
  --muted:#54687d;
  --grid-line:rgba(9,32,52,.06);
  --nav-bg:rgba(242,246,250,.80);
  --card-bg:linear-gradient(160deg,rgba(255,255,255,.98),rgba(255,255,255,.72));
  --chip-bg:rgba(9,32,52,.05);
  --user-bubble:linear-gradient(135deg,#0891b2,#6366f1);
  --user-bubble-text:#ffffff;
  --bot-bubble:rgba(9,32,52,.06);
  --code-bg:rgba(9,32,52,.08);
  --shadow-glow:0 0 0 1px rgba(8,145,178,.22), 0 18px 45px -25px rgba(8,145,178,.5);
  --shadow-1:0 10px 28px -16px rgba(13,27,42,.35);
  --shadow-2:0 28px 60px -32px rgba(13,27,42,.45);
}

/* ---------- Base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-main);
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  transition:background .4s var(--ease), color .4s var(--ease);
}
body[data-lang="bn"]{line-height:1.85}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{line-height:1.2;margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
::selection{background:var(--acc);color:#04121a}

/* Scrollbar */
*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-thumb{background:linear-gradient(var(--acc),var(--acc-2));border-radius:20px}
*::-webkit-scrollbar-track{background:transparent}

/* Background decoration */
.bg-decor{position:fixed;inset:0;z-index:-2;pointer-events:none;overflow:hidden}
.bg-decor::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 35%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 35%,transparent 78%);
}
.blob{position:fixed;border-radius:50%;filter:blur(90px);opacity:.35;z-index:-1;pointer-events:none;animation:float 18s ease-in-out infinite}
.blob.b1{width:520px;height:520px;top:-160px;left:-140px;background:radial-gradient(circle,#22d3ee,transparent 65%)}
.blob.b2{width:460px;height:460px;top:22%;right:-160px;background:radial-gradient(circle,#818cf8,transparent 65%);animation-delay:-6s}
.blob.b3{width:420px;height:420px;bottom:-160px;left:32%;background:radial-gradient(circle,#34d399,transparent 65%);animation-delay:-12s;opacity:.22}
html[data-theme="light"] .blob{opacity:.28}
@keyframes float{0%,100%{transform:translate3d(0,0,0) scale(1)}50%{transform:translate3d(30px,-40px,0) scale(1.08)}}

/* Scroll progress */
.progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:120;
  background:linear-gradient(90deg,var(--acc),var(--acc-2),var(--acc-3));
  box-shadow:0 0 14px var(--acc);transition:width .1s linear}

/* ---------- Layout ---------- */
.wrap{width:min(100% - 40px,var(--maxw));margin-inline:auto}
section{padding:96px 0;position:relative}
.sec-head{max-width:720px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-family:var(--font-mono);
  font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--acc);
  background:var(--acc-soft);border:1px solid var(--border-strong);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--acc);box-shadow:0 0 10px var(--acc);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.7)}}
.sec-head h2{font-size:clamp(1.8rem,4.4vw,2.75rem)}
.sec-head h2 .hl{background:linear-gradient(120deg,var(--acc),var(--acc-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-head p{color:var(--muted);margin-top:12px;font-size:1.02rem}

.glass{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-1);
}

/* Reveal on scroll */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- Navbar ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:100;
  background:var(--nav-bg);backdrop-filter:blur(16px) saturate(160%);-webkit-backdrop-filter:blur(16px) saturate(160%);
  border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s,background .3s;
}
.nav.scrolled{border-bottom-color:var(--border);box-shadow:0 8px 30px -20px rgba(0,0,0,.6)}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--font-mono);font-weight:600;font-size:1.05rem;letter-spacing:-.02em}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-size:.8rem;
  background:linear-gradient(135deg,var(--acc),var(--acc-2));color:#04121a;font-weight:700;
  box-shadow:0 6px 18px -8px var(--acc);
}
.logo .br{color:var(--acc)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;padding:9px 14px;border-radius:10px;font-size:.95rem;font-weight:500;color:var(--muted);
  transition:color .25s,background .25s;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--acc),var(--acc-2));transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease);
}
.nav-links a:hover{color:var(--text);background:var(--surface)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--text)}
.nav-actions{display:flex;align-items:center;gap:10px}
.pill{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 14px;border-radius:999px;
  border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:.88rem;font-weight:600;
  transition:transform .2s var(--ease),border-color .25s,background .25s,box-shadow .25s;
}
.pill:hover{transform:translateY(-2px);border-color:var(--border-strong);box-shadow:0 10px 24px -14px var(--acc)}
.pill svg{width:17px;height:17px}
.lang-toggle{font-family:var(--font-mono);letter-spacing:.02em}
.lang-toggle .on{color:var(--acc)}
.lang-toggle .sep{opacity:.35}
.hamburger{display:none;width:42px;height:38px;border-radius:12px;border:1px solid var(--border);background:var(--surface);place-items:center}
.hamburger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;transition:.3s}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.hamburger.open span{background:transparent}
.hamburger.open span::before{top:0;transform:rotate(45deg)}
.hamburger.open span::after{top:0;transform:rotate(-45deg)}

.mobile-menu{
  position:fixed;inset:var(--nav-h) 0 auto 0;z-index:99;padding:14px 20px 22px;
  background:var(--nav-bg);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border);display:none;flex-direction:column;gap:4px;
}
.mobile-menu.open{display:flex;animation:slideDown .3s var(--ease)}
.mobile-menu a{padding:12px 14px;border-radius:12px;color:var(--muted);font-weight:500}
.mobile-menu a:hover,.mobile-menu a.active{color:var(--text);background:var(--surface)}
@keyframes slideDown{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:none}}

/* ---------- Hero ---------- */
.hero{padding-top:calc(var(--nav-h) + 64px);padding-bottom:80px;min-height:100svh;display:flex;align-items:center}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:center}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.badge{
  display:inline-flex;align-items:center;gap:8px;font-size:.82rem;font-weight:600;padding:7px 13px;border-radius:999px;
  background:var(--surface);border:1px solid var(--border);color:var(--muted);
}
.badge.green{color:var(--acc-3);border-color:rgba(52,211,153,.35);background:rgba(52,211,153,.10)}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--acc-3);box-shadow:0 0 10px var(--acc-3);animation:pulse 2s infinite}
.hero h1{font-size:clamp(2.3rem,6.2vw,4.15rem);letter-spacing:-.03em}
.hero h1 .sub{display:block;font-size:clamp(1rem,2.4vw,1.4rem);font-weight:600;color:var(--muted);margin-top:10px;letter-spacing:0}
.hero h1 .grad{background:linear-gradient(115deg,var(--acc) 5%,var(--acc-2) 55%,var(--acc-3));-webkit-background-clip:text;background-clip:text;color:transparent}
.type-line{
  display:flex;align-items:center;gap:10px;margin:20px 0 6px;font-family:var(--font-mono);
  font-size:clamp(1rem,2.6vw,1.32rem);font-weight:600;min-height:1.9em;flex-wrap:wrap;
}
.type-line .prompt{color:var(--acc-3)}
#typed{color:var(--acc)}
.caret{display:inline-block;width:3px;height:1.15em;background:var(--acc);border-radius:2px;animation:blink 1s steps(2) infinite;vertical-align:-.18em}
@keyframes blink{50%{opacity:0}}
.hero p.bio{color:var(--muted);font-size:1.06rem;max-width:60ch;margin-top:14px}
.hero p.bio b{color:var(--text);font-weight:600}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn{
  display:inline-flex;align-items:center;gap:10px;height:50px;padding:0 24px;border-radius:14px;
  font-weight:600;font-size:.98rem;transition:transform .2s var(--ease),box-shadow .25s,background .25s,border-color .25s;
}
.btn svg{width:18px;height:18px}
.btn-primary{background:linear-gradient(120deg,var(--acc),var(--acc-2));color:#04121a;box-shadow:0 14px 34px -16px var(--acc)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 20px 42px -16px var(--acc)}
.btn-ghost{border:1px solid var(--border);background:var(--surface);color:var(--text)}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--border-strong);box-shadow:0 14px 30px -18px var(--acc)}

/* Terminal card */
.terminal{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-2);border:1px solid var(--border);background:var(--bg-2)}
.term-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--border);background:var(--surface)}
.term-bar i{width:11px;height:11px;border-radius:50%;display:block}
.term-bar i:nth-child(1){background:#ff5f57}.term-bar i:nth-child(2){background:#febc2e}.term-bar i:nth-child(3){background:#28c840}
.term-bar span{margin-left:8px;font-family:var(--font-mono);font-size:.78rem;color:var(--muted)}
.term-body{padding:20px;font-family:var(--font-mono);font-size:.86rem;line-height:2}
.term-body .ln{white-space:pre-wrap;word-break:break-word}
.term-body .c-user{color:var(--acc-3)}
.term-body .c-key{color:var(--acc-2)}
.term-body .c-str{color:var(--acc)}
.term-body .c-mut{color:var(--muted)}
.hero-social{display:flex;gap:12px;margin-top:28px;align-items:center}
.hero-social .lbl{font-size:.85rem;color:var(--muted);font-family:var(--font-mono)}
.soc{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;border:1px solid var(--border);
  background:var(--surface);transition:transform .2s var(--ease),border-color .25s,box-shadow .25s,background .25s;
}
.soc svg{width:19px;height:19px}
.soc:hover{transform:translateY(-4px);border-color:var(--border-strong);box-shadow:0 14px 26px -14px var(--acc)}

/* Stats strip */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:60px}
.stat{padding:20px;border-radius:var(--r-md);text-align:center}
.stat b{display:block;font-size:clamp(1.5rem,3.6vw,2.1rem);font-family:var(--font-mono);
  background:linear-gradient(120deg,var(--acc),var(--acc-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:.86rem;color:var(--muted)}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start}
.about-card{padding:32px}
.about-card h3{font-size:1.3rem;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.about-card h3 svg{width:22px;height:22px;color:var(--acc)}
.about-card p{color:var(--muted);margin-bottom:14px}
.about-card p b{color:var(--text);font-weight:600}
.quote{
  margin-top:20px;padding:18px 20px;border-left:3px solid var(--acc);border-radius:0 14px 14px 0;
  background:var(--acc-soft);font-weight:600;color:var(--text);
}
.fact-list{display:grid;gap:12px;margin-top:4px}
.fact{display:flex;gap:14px;align-items:flex-start;padding:16px;border-radius:var(--r-md);background:var(--surface);border:1px solid var(--border)}
.fact .ic{width:40px;height:40px;flex:0 0 40px;border-radius:12px;display:grid;place-items:center;background:var(--acc-soft);border:1px solid var(--border-strong);color:var(--acc)}
.fact .ic svg{width:19px;height:19px}
.fact b{display:block;font-size:.96rem}
.fact span{color:var(--muted);font-size:.9rem}

/* Timeline */
.timeline{margin-top:26px;padding-left:26px;position:relative}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--acc),var(--acc-2),transparent)}
.tl-item{position:relative;padding:0 0 22px 6px}
.tl-item::before{content:"";position:absolute;left:-24px;top:7px;width:12px;height:12px;border-radius:50%;background:var(--bg);border:2px solid var(--acc);box-shadow:0 0 10px var(--acc)}
.tl-item b{display:block;font-size:1rem}
.tl-item span{color:var(--muted);font-size:.92rem}

/* ---------- Skills ---------- */
.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(268px,1fr));gap:20px}
.skill{padding:24px;border-radius:var(--r-lg);position:relative;overflow:hidden;transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.skill::after{content:"";position:absolute;inset:0;background:radial-gradient(400px circle at var(--mx,50%) var(--my,0%),var(--acc-soft),transparent 60%);opacity:0;transition:opacity .35s;pointer-events:none}
.skill:hover{transform:translateY(-6px);border-color:var(--border-strong);box-shadow:var(--shadow-glow)}
.skill:hover::after{opacity:1}
.skill-top{display:flex;align-items:center;gap:13px;margin-bottom:16px}
.skill-ic{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:var(--surface-2);border:1px solid var(--border);color:var(--acc)}
.skill-ic svg{width:24px;height:24px}
.skill-top b{font-size:1.06rem;display:block}
.skill-top span{font-family:var(--font-mono);font-size:.76rem;color:var(--muted);letter-spacing:.08em}
.bar{height:8px;border-radius:20px;background:var(--chip-bg);overflow:hidden;position:relative}
.bar i{display:block;height:100%;width:0;border-radius:20px;background:linear-gradient(90deg,var(--acc),var(--acc-2));transition:width 1.3s var(--ease)}
.skill-meta{display:flex;justify-content:space-between;margin-top:9px;font-size:.82rem;color:var(--muted);font-family:var(--font-mono)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.tag{padding:8px 15px;border-radius:999px;background:var(--chip-bg);border:1px solid var(--border);font-size:.86rem;color:var(--muted);transition:.25s}
.tag:hover{color:var(--text);border-color:var(--border-strong);transform:translateY(-2px)}

/* ---------- Projects ---------- */
.projects{display:grid;grid-template-columns:1.35fr 1fr;gap:22px;align-items:start}
.proj{padding:26px;border-radius:var(--r-lg);display:flex;flex-direction:column;gap:16px;transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.proj:hover{transform:translateY(-6px);border-color:var(--border-strong);box-shadow:var(--shadow-glow)}
.proj-head{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.proj-title{display:flex;align-items:center;gap:12px}
.proj-ic{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,var(--acc),var(--acc-2));color:#04121a}
.proj-ic svg{width:22px;height:22px}
.proj-title b{font-size:1.22rem;display:block}
.proj-title span{font-family:var(--font-mono);font-size:.78rem;color:var(--muted)}
.chip{font-size:.74rem;font-weight:700;padding:5px 12px;border-radius:999px;letter-spacing:.06em;text-transform:uppercase;font-family:var(--font-mono)}
.chip.live{background:rgba(52,211,153,.14);color:var(--acc-3);border:1px solid rgba(52,211,153,.4)}
.chip.soon{background:var(--chip-bg);color:var(--muted);border:1px solid var(--border)}
.proj p{color:var(--muted);font-size:.98rem}
.proj .feats{display:grid;gap:8px}
.proj .feats li{display:flex;gap:9px;align-items:flex-start;color:var(--muted);font-size:.93rem}
.proj .feats svg{width:16px;height:16px;color:var(--acc-3);flex:0 0 16px;margin-top:5px}
.tech-row{display:flex;flex-wrap:wrap;gap:8px}
.tech-row span{font-family:var(--font-mono);font-size:.76rem;padding:5px 11px;border-radius:8px;background:var(--chip-bg);border:1px solid var(--border);color:var(--muted)}
.proj-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:auto;padding-top:6px}
.proj-links .btn{height:44px;padding:0 18px;font-size:.9rem;border-radius:12px}
.proj-col{display:grid;gap:22px}
.mini-frame{
  height:210px;border-radius:var(--r-md);border:1px solid var(--border);overflow:hidden;background:var(--bg-2);position:relative;
}
.mini-frame iframe{width:100%;height:100%;border:0;display:block;opacity:.95}
.mini-frame .fallback{position:absolute;inset:0;display:none;place-items:center;text-align:center;padding:20px;color:var(--muted);font-size:.9rem}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start}
.contact-card{padding:32px}
.contact-list{display:grid;gap:14px;margin-top:22px}
.c-item{
  display:flex;align-items:center;gap:15px;padding:16px 18px;border-radius:var(--r-md);
  background:var(--surface);border:1px solid var(--border);transition:.25s;
}
a.c-item:hover{transform:translateX(5px);border-color:var(--border-strong);box-shadow:0 12px 26px -18px var(--acc)}
.c-item .ic{width:44px;height:44px;flex:0 0 44px;border-radius:13px;display:grid;place-items:center;background:var(--acc-soft);border:1px solid var(--border-strong);color:var(--acc)}
.c-item .ic svg{width:20px;height:20px}
.c-item b{display:block;font-size:.95rem}
.c-item span{color:var(--muted);font-size:.88rem;word-break:break-all}
.c-item .go{margin-left:auto;color:var(--muted);transition:.25s}
a.c-item:hover .go{color:var(--acc);transform:translateX(3px)}
.c-item .go svg{width:18px;height:18px}
.copy-btn{margin-left:auto;display:inline-block;font-size:.78rem;font-family:var(--font-mono);padding:7px 12px;border-radius:9px;border:1px solid var(--border);background:var(--chip-bg);color:var(--muted);transition:.2s;cursor:pointer;user-select:none}
.copy-btn:hover,.copy-btn:focus-visible{color:var(--acc);border-color:var(--border-strong);outline:none}

.map-card{padding:0;overflow:hidden}
.map-visual{height:250px;position:relative;background:
  radial-gradient(circle at 30% 30%,rgba(34,211,238,.22),transparent 55%),
  radial-gradient(circle at 75% 65%,rgba(129,140,248,.22),transparent 55%),
  var(--bg-2)}
.map-visual svg{position:absolute;inset:0;width:100%;height:100%;opacity:.5}
.pin{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center}
.pin .ring{width:18px;height:18px;border-radius:50%;background:var(--acc);margin:0 auto;box-shadow:0 0 0 0 var(--acc);animation:ring 2.4s infinite}
@keyframes ring{0%{box-shadow:0 0 0 0 rgba(34,211,238,.6)}70%{box-shadow:0 0 0 26px rgba(34,211,238,0)}100%{box-shadow:0 0 0 0 rgba(34,211,238,0)}}
.pin b{display:block;margin-top:10px;font-size:.92rem;background:var(--nav-bg);padding:5px 12px;border-radius:999px;border:1px solid var(--border)}
.map-body{padding:24px}
.map-body h3{font-size:1.15rem;margin-bottom:8px}
.map-body p{color:var(--muted);font-size:.95rem}
.social-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:20px}
.soc-big{
  display:flex;align-items:center;gap:13px;padding:16px;border-radius:var(--r-md);background:var(--surface);
  border:1px solid var(--border);transition:.25s;font-weight:600;font-size:.95rem;
}
.soc-big:hover{transform:translateY(-4px);border-color:var(--border-strong);box-shadow:0 14px 28px -16px var(--acc)}
.soc-big svg{width:22px;height:22px}
.soc-big small{display:block;font-weight:400;color:var(--muted);font-size:.78rem;font-family:var(--font-mono)}
.ai-hint{
  margin-top:20px;padding:18px;border-radius:var(--r-md);border:1px dashed var(--border-strong);
  background:var(--acc-soft);display:flex;gap:13px;align-items:flex-start;
}
.ai-hint svg{width:22px;height:22px;color:var(--acc);flex:0 0 22px;margin-top:3px}
.ai-hint b{display:block;margin-bottom:4px}
.ai-hint span{color:var(--muted);font-size:.92rem}

/* ---------- Footer ---------- */
footer{border-top:1px solid var(--border);padding:52px 0 34px;background:var(--bg-2)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px}
.foot-grid p{color:var(--muted);font-size:.94rem;margin-top:12px;max-width:44ch}
.foot-col h4{font-size:.95rem;margin-bottom:14px;font-family:var(--font-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--acc)}
.foot-col a{display:block;color:var(--muted);padding:5px 0;font-size:.94rem;transition:.2s}
.foot-col a:hover{color:var(--text);transform:translateX(4px)}
.foot-bottom{margin-top:38px;padding-top:22px;border-top:1px solid var(--border);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center;color:var(--muted);font-size:.9rem}
.foot-bottom .mono{font-family:var(--font-mono);font-size:.82rem}
.heart{color:var(--acc)}

/* ---------- Chatbot ---------- */
.chat-fab{
  position:fixed;right:22px;bottom:22px;z-index:200;width:62px;height:62px;border-radius:20px;
  display:grid;place-items:center;background:linear-gradient(135deg,var(--acc),var(--acc-2));color:#04121a;
  box-shadow:0 18px 40px -14px var(--acc), 0 0 0 0 rgba(34,211,238,.5);animation:fabPulse 3s infinite;
  transition:transform .25s var(--ease),opacity .25s;
}
.chat-fab:hover{transform:translateY(-4px) scale(1.04)}
.chat-fab svg{width:28px;height:28px}
.chat-fab .x{display:none}
.chat-fab.open .chat-ic{display:none}
.chat-fab.open .x{display:block}
.chat-fab.open{animation:none}
@keyframes fabPulse{0%{box-shadow:0 18px 40px -14px var(--acc),0 0 0 0 rgba(34,211,238,.45)}70%{box-shadow:0 18px 40px -14px var(--acc),0 0 0 18px rgba(34,211,238,0)}100%{box-shadow:0 18px 40px -14px var(--acc),0 0 0 0 rgba(34,211,238,0)}}
.fab-badge{position:absolute;top:-6px;right:-6px;min-width:22px;height:22px;padding:0 6px;border-radius:999px;background:#f43f5e;color:#fff;font-size:.72rem;font-weight:700;display:grid;place-items:center;border:2px solid var(--bg)}

.chat-panel{
  position:fixed;right:22px;bottom:98px;z-index:200;width:min(400px,calc(100vw - 32px));height:min(600px,calc(100svh - 140px));
  display:flex;flex-direction:column;border-radius:22px;overflow:hidden;
  background:var(--nav-bg);backdrop-filter:blur(22px) saturate(160%);-webkit-backdrop-filter:blur(22px) saturate(160%);
  border:1px solid var(--border);box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(18px) scale(.97);transform-origin:bottom right;
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s;
}
.chat-panel.open{opacity:1;visibility:visible;transform:none}
.chat-head{
  display:flex;align-items:center;gap:12px;padding:15px 16px;border-bottom:1px solid var(--border);
  background:linear-gradient(120deg,rgba(34,211,238,.16),rgba(129,140,248,.12));
}
.chat-av{width:40px;height:40px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,var(--acc),var(--acc-2));color:#04121a;flex:0 0 40px}
.chat-av svg{width:21px;height:21px}
.chat-head b{display:block;font-size:1rem;line-height:1.2}
.chat-head .status{display:flex;align-items:center;gap:6px;font-size:.76rem;color:var(--muted);font-family:var(--font-mono)}
.chat-head .status i{width:7px;height:7px;border-radius:50%;background:var(--acc-3);box-shadow:0 0 8px var(--acc-3)}
.chat-close{margin-left:auto;width:32px;height:32px;border-radius:10px;display:grid;place-items:center;color:var(--muted);transition:.2s}
.chat-close:hover{background:var(--surface);color:var(--text)}
.chat-close svg{width:17px;height:17px}

.chat-msgs{flex:1;overflow-y:auto;padding:18px 15px;display:flex;flex-direction:column;gap:12px;scroll-behavior:smooth}
.msg{display:flex;gap:9px;max-width:88%;animation:msgIn .3s var(--ease)}
@keyframes msgIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.msg .mav{width:28px;height:28px;flex:0 0 28px;border-radius:9px;display:grid;place-items:center;background:linear-gradient(135deg,var(--acc),var(--acc-2));color:#04121a;margin-top:2px}
.msg .mav svg{width:15px;height:15px}
.msg .bub{padding:11px 14px;border-radius:15px;font-size:.93rem;line-height:1.6;word-break:break-word;background:var(--bot-bubble);border:1px solid var(--border)}
.msg.user{align-self:flex-end;flex-direction:row-reverse}
.msg.user .bub{background:var(--user-bubble);color:var(--user-bubble-text);border-color:transparent;border-bottom-right-radius:5px}
.msg.bot .bub{border-bottom-left-radius:5px}
.msg .bub p{margin:0 0 8px}
.msg .bub p:last-child{margin-bottom:0}
.msg .bub ul{margin:6px 0 8px 16px;list-style:disc}
.msg .bub li{margin-bottom:4px}
.msg .bub a{color:var(--acc);text-decoration:underline}
.msg.user .bub a{color:inherit}
.msg .bub code{font-family:var(--font-mono);font-size:.84em;background:var(--code-bg);padding:2px 6px;border-radius:6px}
.msg .bub pre{background:var(--code-bg);padding:11px;border-radius:10px;overflow-x:auto;margin:8px 0;border:1px solid var(--border)}
.msg .bub pre code{background:none;padding:0}
.msg .bub b{font-weight:700}
.typing{display:flex;gap:5px;padding:14px}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--acc);animation:bounce 1.2s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes bounce{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-6px);opacity:1}}

.quick-chips{display:flex;gap:8px;padding:0 15px 10px;flex-wrap:wrap}
.qc{font-size:.78rem;padding:6px 12px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--muted);transition:.2s}
.qc:hover{color:var(--acc);border-color:var(--border-strong);transform:translateY(-2px)}

.chat-input{display:flex;gap:9px;padding:12px 13px;border-top:1px solid var(--border);align-items:flex-end;background:var(--surface)}
.chat-input textarea{
  flex:1;resize:none;border:1px solid var(--border);background:var(--surface-2);color:var(--text);
  border-radius:13px;padding:11px 13px;font-family:var(--font-main);font-size:.93rem;line-height:1.5;
  max-height:110px;outline:none;transition:border-color .2s;
}
.chat-input textarea:focus{border-color:var(--border-strong)}
.send{width:44px;height:44px;flex:0 0 44px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,var(--acc),var(--acc-2));color:#04121a;transition:.2s}
.send:hover{transform:translateY(-2px);box-shadow:0 10px 22px -10px var(--acc)}
.send:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.send svg{width:19px;height:19px}
.chat-foot{text-align:center;font-size:.7rem;color:var(--muted);padding:0 0 9px;font-family:var(--font-mono)}

/* Toast */
.toast{
  position:fixed;left:50%;bottom:30px;transform:translate(-50%,20px);z-index:300;
  padding:12px 20px;border-radius:12px;background:var(--surface-2);border:1px solid var(--border-strong);
  color:var(--text);font-size:.9rem;font-weight:600;box-shadow:var(--shadow-2);opacity:0;pointer-events:none;transition:.3s var(--ease);
}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .about-grid,.contact-grid{grid-template-columns:1fr}
  .projects{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .nav-links{display:none}
  .hamburger{display:grid}
  .lang-toggle span.hide-sm{display:none}
}
@media (max-width:560px){
  section{padding:70px 0}
  .wrap{width:min(100% - 28px,var(--maxw))}
  .hero{padding-top:calc(var(--nav-h) + 44px)}
  .about-card,.contact-card{padding:24px}
  .stats{grid-template-columns:1fr 1fr;gap:12px}
  .social-row{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .chat-panel{right:12px;left:12px;width:auto;bottom:88px;height:min(560px,calc(100svh - 110px))}
  .chat-fab{right:16px;bottom:16px}
  .cta-row .btn{flex:1 1 100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}


/* ---------- Cloudflare kit additions ---------- */
.dynamic-projects{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));align-items:stretch}
.dynamic-projects .proj{height:100%}
.dynamic-projects .proj.featured{grid-column:span 2}
.dynamic-projects .proj-description{color:var(--muted);font-size:.98rem}
.dynamic-projects .proj-links{align-items:center}
.dynamic-projects .legal-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:2px}
.dynamic-projects .legal-links a{font-size:.8rem;color:var(--muted);text-decoration:underline;text-underline-offset:3px}
.dynamic-projects .legal-links a:hover{color:var(--acc)}
.project-empty{padding:30px;display:grid;gap:8px;text-align:center;color:var(--muted)}
.project-empty b{color:var(--text);font-size:1.1rem}
.project-empty span{font-size:.92rem}
.site-admin-link{font-family:var(--font-mono);font-size:.78rem;color:var(--muted)}
@media (max-width:860px){.dynamic-projects .proj.featured{grid-column:auto}}


.legal-page{min-height:100vh;background:var(--bg);color:var(--text)}
.legal-shell{width:min(100% - 32px,900px);margin:0 auto;padding:28px 0 70px}
.legal-top{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:34px}
.legal-top .nav-back{color:var(--muted);font-weight:600}.legal-top .nav-back:hover{color:var(--acc)}
.legal-card{padding:clamp(22px,5vw,46px)}
.legal-card h1{font-size:clamp(2rem,5vw,3.3rem);margin-bottom:12px}
.legal-card .meta{color:var(--muted);font-size:.9rem;margin-bottom:30px}
.legal-card h2{font-size:1.25rem;margin:28px 0 9px;color:var(--acc)}
.legal-card p,.legal-card li{color:var(--muted);line-height:1.8}
.legal-card ul{list-style:disc;margin:10px 0 10px 22px}
.legal-card a{color:var(--acc);text-decoration:underline;text-underline-offset:3px}
.legal-note{padding:14px 16px;border-left:3px solid var(--acc);background:var(--acc-soft);border-radius:0 12px 12px 0;margin:18px 0;color:var(--text)}
.legal-footer{margin-top:18px;display:flex;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:.86rem}