/* ============================================================
   ZAIN ABBAS — DESIGN SYSTEM v3 · Premium Obsidian
   ============================================================ */

:root {
  --void:   #020408;
  --dark:   #060b14;
  --dark2:  #0a1120;
  --panel:  #0d1629;
  --panel2: #111e36;
  --edge:   rgba(100,180,255,0.10);
  --edge2:  rgba(100,180,255,0.05);
  --ice:    #8be0ff;
  --sky:    #3eb8f7;
  --azure:  #0d7fe8;
  --mint:   #00e5b0;
  --amber:  #ffb347;
  --t1: #f0f6ff;
  --t2: #7a9ac4;
  --t3: #3a5070;
  --t4: #1e3050;
  --g1: linear-gradient(135deg,#8be0ff 0%,#0d7fe8 100%);
  --g2: linear-gradient(135deg,#00e5b0 0%,#3eb8f7 60%,#0d7fe8 100%);
  --gtext: linear-gradient(135deg,#8be0ff 0%,#3eb8f7 40%,#00e5b0 100%);
  --glow-sm: 0 0 20px rgba(59,184,247,0.2);
  --glow-md: 0 0 40px rgba(59,184,247,0.25);
  --r:  10px; --r2: 18px; --r3: 28px;
  --f-head: 'Space Grotesk', sans-serif;
  --f-body: 'Manrope', sans-serif;
  --f-mono: 'JetBrains Mono', monospace;
  --nav-h: 68px;
  --max: 1180px;
  --pad: clamp(20px,5vw,48px);
}

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;-webkit-font-smoothing:antialiased}
body{font-family:var(--f-body);background:var(--void);color:var(--t1);overflow-x:hidden;line-height:1.65;cursor:none}
body.loading{overflow:hidden}
::-webkit-scrollbar{width:3px}::-webkit-scrollbar-track{background:var(--void)}::-webkit-scrollbar-thumb{background:var(--azure);border-radius:2px}
::selection{background:rgba(59,184,247,0.25);color:#fff}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:var(--f-body);cursor:pointer;border:none;outline:none}

/* LOADER */
#loader{position:fixed;inset:0;background:var(--void);z-index:9999;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:24px;transition:opacity .18s ease,visibility .18s ease}
#loader.done{opacity:0;visibility:hidden;pointer-events:none}
.loader-logo-wrap{position:relative;width:88px;height:88px}
.loader-ring{position:absolute;inset:0;border-radius:50%;border:2px solid transparent;border-top-color:#3eb8f7;border-right-color:#00e5b0;animation:lSpin 1s linear infinite}
.loader-ring2{position:absolute;inset:10px;border-radius:50%;border:1px solid transparent;border-bottom-color:rgba(139,224,255,0.5);animation:lSpin 1.5s linear infinite reverse}
.loader-logo-img{position:absolute;inset:16px;width:calc(100% - 32px);height:calc(100% - 32px);object-fit:contain;filter:brightness(1.15)}
@keyframes lSpin{to{transform:rotate(360deg)}}

/* CURSOR */
.cursor-dot{position:fixed;width:5px;height:5px;background:var(--sky);border-radius:50%;pointer-events:none;z-index:9998;transform:translate(-50%,-50%);transition:width .15s,height .15s,background .15s}
.cursor-ring{position:fixed;width:28px;height:28px;border:1.5px solid rgba(139,224,255,0.4);border-radius:50%;pointer-events:none;z-index:9997;transform:translate(-50%,-50%);transition:all .2s}
body.cursor-hover .cursor-dot{width:8px;height:8px;background:var(--mint)}
body.cursor-hover .cursor-ring{width:44px;height:44px;border-color:rgba(0,229,176,0.45)}

/* NAVBAR */
#navbar{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:1000;transition:background .35s,border-color .35s;border-bottom:1px solid transparent}
#navbar.scrolled{background:rgba(2,4,8,0.9);backdrop-filter:blur(24px) saturate(1.4);border-color:var(--edge2)}
.nav-inner{max-width:var(--max);margin:0 auto;height:100%;display:flex;align-items:center;padding:0 var(--pad);gap:24px}
.nav-logo{display:flex;align-items:center;flex-shrink:0}
.nav-logo-img{height:90px;width:auto;object-fit:contain}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none;margin-left:auto}
.nav-links a{font-size:13.5px;font-weight:500;color:var(--t2);letter-spacing:0.2px;transition:color .2s;position:relative}
.nav-links a::after{content:'';position:absolute;left:0;bottom:-3px;right:0;height:1px;background:var(--g1);transform:scaleX(0);transition:transform .25s ease;transform-origin:left}
.nav-links a:hover,.nav-links a.active{color:var(--t1)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{font-size:13px;font-weight:600;color:var(--void);background:var(--g1);padding:9px 22px;border-radius:100px;letter-spacing:0.3px;transition:opacity .2s,transform .2s,box-shadow .2s;white-space:nowrap;flex-shrink:0}
.nav-cta:hover{opacity:.88;transform:translateY(-1px);box-shadow:var(--glow-sm)}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;padding:4px;margin-left:auto}
.hamburger span{width:22px;height:1.5px;background:var(--t2);border-radius:2px;display:block;transition:all .3s}
.hamburger.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* REVEAL */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s cubic-bezier(.22,1,.36,1),transform .6s cubic-bezier(.22,1,.36,1)}
.reveal.visible{opacity:1;transform:none}

/* LAYOUT */
.container{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.section{padding:100px 0}

/* SECTION HEADERS */
.section-tag{font-family:var(--f-mono);font-size:11px;font-weight:600;letter-spacing:2.5px;text-transform:uppercase;color:var(--sky);display:inline-flex;align-items:center;gap:8px;margin-bottom:14px}
.section-tag::before{content:'';width:24px;height:1px;background:var(--sky)}
.section-header{text-align:center;margin-bottom:56px}
.section-header h2{font-family:var(--f-head);font-size:clamp(2rem,4vw,3rem);font-weight:700;color:var(--t1);line-height:1.15;margin-bottom:12px}
.section-header p{font-size:16px;color:var(--t2);max-width:480px;margin:0 auto}
.grad{background:var(--gtext);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* BUTTONS */
.btn-primary{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--void);background:var(--g1);padding:12px 28px;border-radius:100px;transition:opacity .2s,transform .2s,box-shadow .2s;letter-spacing:0.2px}
.btn-primary:hover{opacity:.88;transform:translateY(-2px);box-shadow:0 8px 28px rgba(59,184,247,0.35)}
.btn-primary svg{width:16px;height:16px}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:500;color:var(--t2);background:transparent;border:1px solid var(--edge);padding:11px 26px;border-radius:100px;transition:color .2s,border-color .2s,background .2s}
.btn-ghost:hover{color:var(--t1);border-color:rgba(100,180,255,0.3);background:rgba(100,180,255,0.05)}
.btn-outline{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--sky);border:1px solid rgba(59,184,247,0.3);padding:12px 28px;border-radius:100px;transition:all .2s}
.btn-outline:hover{background:rgba(59,184,247,0.07);border-color:var(--sky);transform:translateY(-1px)}
.section-cta{text-align:center;margin-top:48px}

/* PAGE HERO */
.page-hero{padding:calc(var(--nav-h) + 72px) 0 60px;text-align:center;position:relative;overflow:hidden}
.page-hero-glow{position:absolute;top:0;left:50%;transform:translateX(-50%);width:600px;height:280px;background:radial-gradient(ellipse at 50% 0%,rgba(13,127,232,0.12) 0%,transparent 70%);pointer-events:none}
.page-hero h1{font-family:var(--f-head);font-size:clamp(2.2rem,5vw,3.4rem);font-weight:800;color:var(--t1);margin-bottom:14px}
.page-hero p{font-size:16px;color:var(--t2);max-width:520px;margin:0 auto}

/* PROJECT CARDS */
.proj-card{background:var(--panel);border:1px solid var(--edge2);border-radius:var(--r2);overflow:hidden;transition:transform .3s ease,border-color .3s,box-shadow .3s}
.proj-card:hover{transform:translateY(-6px);border-color:rgba(100,180,255,0.2);box-shadow:0 20px 60px rgba(0,0,0,0.4),0 0 40px rgba(59,184,247,0.07)}
.proj-img-wrap{position:relative;aspect-ratio:16/9;overflow:hidden}
.proj-img{width:100%;height:100%;transition:transform .4s ease;position:relative;background:#ffffff}
.proj-thumbnail{width:100%;height:100%;object-fit:contain;display:block;transition:transform .4s ease;padding:8px}
.proj-card:hover .proj-img{transform:scale(1.04)}
.proj-badge{position:absolute;top:14px;left:14px;font-family:var(--f-mono);font-size:10px;letter-spacing:1.2px;text-transform:uppercase;font-weight:600;padding:4px 10px;border-radius:100px;background:rgba(2,4,8,0.7);backdrop-filter:blur(8px);border:1px solid var(--edge);color:var(--sky)}
.proj-badge.cv{color:var(--mint);border-color:rgba(0,229,176,0.2)}
.proj-badge.purple{color:#c084fc;border-color:rgba(192,132,252,0.2)}
.proj-body{padding:22px}
.proj-body h3{font-family:var(--f-head);font-size:17px;font-weight:700;color:var(--t1);margin-bottom:8px}
.proj-body p{font-size:13.5px;color:var(--t2);line-height:1.6;margin-bottom:16px}
.proj-tech{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:18px}
.proj-tech span{font-family:var(--f-mono);font-size:10px;font-weight:500;color:var(--sky);background:rgba(59,184,247,0.07);border:1px solid rgba(59,184,247,0.15);padding:3px 9px;border-radius:100px}
.proj-footer{display:flex;align-items:center;justify-content:space-between;gap:12px}
.proj-link{font-size:13px;font-weight:600;color:var(--sky);transition:text-decoration .2s}
.proj-link:hover{text-decoration:underline}
.proj-hire{font-size:12px;color:var(--t3);transition:color .2s}
.proj-hire:hover{color:var(--t2)}

/* SKILL CARDS */
.skill-card{background:var(--panel);border:1px solid var(--edge2);border-radius:var(--r2);padding:28px;transition:border-color .3s,transform .3s,box-shadow .3s}
.skill-card:hover{border-color:rgba(100,180,255,0.2);transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,0.3),var(--glow-sm)}
.skill-icon{font-size:2rem;margin-bottom:14px}
.skill-card h4{font-family:var(--f-head);font-size:15px;font-weight:700;color:var(--t1);margin-bottom:8px}
.skill-card p{font-size:13px;color:var(--t2);line-height:1.5}

/* CTA */
.cta-section{padding:80px 0;position:relative;overflow:hidden}
.cta-inner{background:var(--panel);border:1px solid var(--edge);border-radius:var(--r3);padding:64px var(--pad);text-align:center;position:relative;overflow:hidden}
.cta-glow{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:500px;height:200px;background:radial-gradient(ellipse,rgba(13,127,232,0.15) 0%,transparent 70%);pointer-events:none}
.cta-inner h2{font-family:var(--f-head);font-size:clamp(1.8rem,3.5vw,2.5rem);font-weight:800;color:var(--t1);margin-bottom:12px}
.cta-inner p{font-size:15.5px;color:var(--t2);margin-bottom:32px;max-width:480px;margin-left:auto;margin-right:auto}
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* FOOTER */
.footer{border-top:1px solid var(--edge2);padding:32px 0}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.footer-logo{height:80px;width:auto;object-fit:contain}
.footer-copy{font-size:13px;color:var(--t3)}
.footer-links{display:flex;gap:20px}
.footer-links a{font-size:13px;color:var(--t3);transition:color .2s}
.footer-links a:hover{color:var(--sky)}

/* AI ASSISTANT */
.ai-btn{position:fixed;bottom:28px;right:28px;width:52px;height:52px;background:var(--g1);border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:900;box-shadow:0 4px 20px rgba(59,184,247,0.4);transition:transform .2s,box-shadow .2s}
.ai-btn:hover{transform:scale(1.08);box-shadow:0 6px 30px rgba(59,184,247,0.55)}
.ai-btn svg{width:22px;height:22px;color:var(--void)}
.ai-badge{position:absolute;top:-2px;right:-2px;background:var(--mint);color:var(--void);font-family:var(--f-mono);font-size:9px;font-weight:700;padding:1px 5px;border-radius:10px;letter-spacing:0.5px}
.ai-panel{position:fixed;bottom:92px;right:28px;width:340px;max-height:480px;background:var(--dark);border:1px solid var(--edge);border-radius:var(--r2);box-shadow:0 24px 60px rgba(0,0,0,0.6),var(--glow-sm);display:flex;flex-direction:column;z-index:899;opacity:0;transform:translateY(12px) scale(0.97);pointer-events:none;transition:opacity .25s ease,transform .25s ease}
.ai-panel.open{opacity:1;transform:none;pointer-events:all}
.ai-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--edge2)}
.ai-title{display:flex;align-items:center;gap:10px}
.ai-avatar{width:32px;height:32px;background:var(--g1);border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--f-head);font-size:13px;font-weight:800;color:var(--void)}
.ai-title div strong{display:block;font-size:13px;font-weight:700;color:var(--t1)}
.ai-title div span{font-size:11px;color:var(--t3)}
.ai-close{background:none;font-size:16px;color:var(--t3);transition:color .2s}
.ai-close:hover{color:var(--t1)}
.ai-messages{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px;scrollbar-width:thin;scrollbar-color:var(--panel2) transparent}
.ai-msg{max-width:88%}
.ai-msg.user{align-self:flex-end}
.ai-msg.bot{align-self:flex-start}
.ai-msg span{display:block;padding:9px 13px;border-radius:14px;font-size:13px;line-height:1.5}
.ai-msg.user span{background:var(--g1);color:var(--void);border-bottom-right-radius:4px}
.ai-msg.bot span{background:var(--panel2);color:var(--t1);border-bottom-left-radius:4px;border:1px solid var(--edge2)}
.ai-typing span{display:flex;gap:4px;align-items:center;padding:10px 14px}
.t-dot{width:6px;height:6px;background:var(--t3);border-radius:50%;animation:tDot 1.2s ease infinite}
.t-dot:nth-child(2){animation-delay:.2s}
.t-dot:nth-child(3){animation-delay:.4s}
@keyframes tDot{0%,60%,100%{transform:translateY(0)}30%{transform:translateY(-5px)}}
.ai-input-row{display:flex;align-items:center;gap:8px;padding:10px 12px;border-top:1px solid var(--edge2)}
.ai-input-row input{flex:1;background:var(--panel2);border:1px solid var(--edge2);border-radius:100px;color:var(--t1);font-family:var(--f-body);font-size:13px;padding:8px 14px;outline:none;transition:border-color .2s}
.ai-input-row input:focus{border-color:rgba(59,184,247,0.3)}
.ai-input-row input::placeholder{color:var(--t3)}
.ai-input-row button{width:32px;height:32px;background:var(--g1);border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:opacity .2s}
.ai-input-row button:hover{opacity:.85}
.ai-input-row button svg{width:14px;height:14px;color:var(--void)}

/* FORMS */
.form-field{display:flex;flex-direction:column;gap:7px}
.form-field label{font-size:13px;font-weight:600;color:var(--t2);letter-spacing:0.2px}
.form-field label span{color:var(--sky)}
.form-field input,.form-field select,.form-field textarea{background:var(--panel);border:1px solid var(--edge);border-radius:var(--r);color:var(--t1);font-family:var(--f-body);font-size:14px;padding:11px 14px;outline:none;transition:border-color .2s,background .2s;-webkit-appearance:none}
.form-field select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237a9ac4' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px;cursor:pointer}
.form-field select option{background:var(--panel)}
.form-field textarea{resize:vertical;min-height:110px}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:rgba(59,184,247,0.4);background:var(--dark2)}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--t4)}
.form-field.full{grid-column:1/-1}

/* MARQUEE */
.marquee-wrap{overflow:hidden;border-top:1px solid var(--edge2);border-bottom:1px solid var(--edge2);padding:14px 0;background:var(--dark);mask-image:linear-gradient(to right,transparent 0%,black 10%,black 90%,transparent 100%)}
.marquee-track{display:flex;gap:0;width:max-content;animation:marquee 30s linear infinite}
.marquee-track span{font-family:var(--f-mono);font-size:12px;font-weight:500;letter-spacing:1px;text-transform:uppercase;color:var(--t3);padding:0 24px;white-space:nowrap}
.marquee-track .dot{color:var(--sky);padding:0 4px}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* TOOLS ROW */
.tools-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:36px}
.tools-row span{font-family:var(--f-mono);font-size:11px;font-weight:600;letter-spacing:1px;text-transform:uppercase;color:var(--t2);background:var(--panel);border:1px solid var(--edge2);padding:6px 14px;border-radius:100px;transition:color .2s,border-color .2s}
.tools-row span:hover{color:var(--sky);border-color:rgba(59,184,247,0.25)}

/* GRIDS */
.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:24px}
.skills-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}

/* FILE UPLOAD — FIXED */
.file-upload-area{background:var(--panel);border:1.5px dashed rgba(59,184,247,0.2);border-radius:var(--r2);padding:30px 20px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s;position:relative;user-select:none}
.file-upload-area:hover,.file-upload-area.drag-over{border-color:rgba(59,184,247,0.5);background:rgba(59,184,247,0.04)}
.upload-icon{font-size:2rem;margin-bottom:10px}
.file-upload-area p{font-size:14px;color:var(--t2);line-height:1.5}
.file-upload-area p span{color:var(--sky);font-weight:600}
.file-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.file-item{display:inline-flex;align-items:center;gap:6px;background:var(--panel2);border:1px solid var(--edge);padding:5px 10px;border-radius:100px;font-size:12px;color:var(--t2)}
.file-item button{background:none;color:var(--t3);font-size:14px;line-height:1;transition:color .2s}
.file-item button:hover{color:#ff6b6b}
.upload-hint{font-size:11.5px;color:var(--t3);margin-top:8px}
.form-submit{margin-top:8px}
.form-submit button{width:100%;padding:14px;background:var(--g1);color:var(--void);font-family:var(--f-body);font-size:15px;font-weight:700;border-radius:var(--r);transition:opacity .2s,transform .2s,box-shadow .2s;letter-spacing:0.3px}
.form-submit button:hover{opacity:.88;transform:translateY(-2px);box-shadow:0 8px 30px rgba(59,184,247,0.35)}
.form-submit button:disabled{opacity:.5;cursor:not-allowed;transform:none}
.form-note{font-size:12px;color:var(--t3);margin-top:10px;text-align:center}
.form-success{display:none;text-align:center;padding:48px 24px}
.form-success.show{display:block}
.success-icon{font-size:3.5rem;margin-bottom:16px}
.form-success h3{font-family:var(--f-head);font-size:1.6rem;font-weight:800;color:var(--t1);margin-bottom:10px}
.form-success p{color:var(--t2);font-size:15px}

/* RESPONSIVE */
@media(max-width:1100px){
  .nav-inner{gap:18px}
  .nav-links{gap:20px}
  .nav-links a{font-size:13px}
  .section{padding:84px 0}
  .page-hero{padding:calc(var(--nav-h) + 56px) 0 52px}
  .page-hero-glow{width:min(82vw,560px);height:240px}
  .cta-inner{padding:52px var(--pad)}
}
@media(max-width:900px){
  .nav-logo-img{height:50px}
  .page-hero h1{font-size:clamp(2rem,6vw,3rem)}
  .page-hero p{font-size:15px;max-width:34rem}
  .section-header{margin-bottom:44px}
  .section-header p{font-size:15px}
  .footer-logo{height:50px}
}
@media(max-width:768px){
  .nav-links{display:none;position:fixed;inset:0;top:var(--nav-h);background:rgba(2,4,8,0.97);backdrop-filter:blur(20px);flex-direction:column;align-items:center;justify-content:center;gap:36px;z-index:999}
  .nav-links.open{display:flex}
  .nav-links a{font-size:18px}
  .nav-cta{display:none}
  .hamburger{display:flex}
  .nav-logo-img{height:46px}
  .cursor-dot,.cursor-ring{display:none}
  body{cursor:auto}
  .section{padding:72px 0}
  .page-hero{padding:calc(var(--nav-h) + 44px) 0 44px}
  .page-hero-glow{width:min(92vw,460px);height:220px}
  .page-hero p{font-size:14px}
  .projects-grid{grid-template-columns:1fr}
  .skills-grid{grid-template-columns:1fr 1fr}
  .footer-inner{flex-direction:column;text-align:center}
  .footer-logo{height:46px}
  .ai-panel{width:calc(100vw - 32px);right:16px}
  .cta-btns{flex-direction:column;align-items:center}
  .cta-btns a,.cta-btns button{width:100%;justify-content:center}
}
@media(max-width:560px){
  .nav-inner{padding:0 18px}
  .nav-logo-img{height:42px}
  .page-hero{padding:calc(var(--nav-h) + 36px) 0 38px}
  .page-hero h1{font-size:clamp(1.8rem,8vw,2.5rem)}
  .section-tag{font-size:10px;letter-spacing:2px}
  .btn-primary,.btn-ghost,.btn-outline{width:100%;justify-content:center}
  .footer{padding:26px 0}
  .footer-logo{height:42px}
  .footer-links{gap:14px;justify-content:center;flex-wrap:wrap}
  .ai-btn{bottom:18px;right:18px}
  .ai-panel{width:calc(100vw - 20px);right:10px;bottom:80px}
}
@media(max-width:480px){.skills-grid{grid-template-columns:1fr}}