/* Portfolio styles */
:root{
  --blue:      #2563eb;
  --blue-d:    #1d4ed8;
  --blue-l:    #3b82f6;
  --blue-soft: #eff6ff;
  --blue-rule: #bfdbfe;
  --text:      #0f172a;
  --text-2:    #334155;
  --text-3:    #64748b;
  --border:    #e2e8f0;
  --bg:        #ffffff;
  --bg-2:      #f8faff;
  --radius:    10px;
  --nav-h:     68px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.6;color:var(--text);background:var(--bg)}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* TYPOGRAPHY */
h1{font-size:clamp(2rem,5vw,3.25rem);font-weight:800;line-height:1.1;letter-spacing:-0.02em}
h2{font-size:clamp(1.5rem,3vw,2rem);font-weight:700;letter-spacing:-0.01em}
h3{font-size:1.1rem;font-weight:600}
p{color:var(--text-2)}

/* LAYOUT */
.container{max-width:1120px;margin:0 auto;padding:0 1.5rem}

/* BUTTONS */
.btn-primary{display:inline-block;background:var(--blue);color:#fff;padding:.75rem 1.75rem;border-radius:var(--radius);font-weight:600;font-size:.95rem;transition:background .2s,transform .15s;border:none;cursor:pointer}
.btn-primary:hover{background:var(--blue-d);transform:translateY(-1px)}
.btn-secondary{display:inline-block;background:transparent;color:var(--blue);border:1.5px solid var(--blue-rule);padding:.72rem 1.6rem;border-radius:var(--radius);font-weight:600;font-size:.95rem;transition:border-color .2s,color .2s}
.btn-secondary:hover{border-color:var(--blue);color:var(--blue-d)}

/* SECTION HEADERS */
.section-header{margin-bottom:3rem}
.section-label{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);margin-bottom:.6rem}
.section-header h2{margin-bottom:.6rem}
.section-header p{max-width:540px;color:var(--text-3)}

/* NAV */
.nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:100;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s}
.nav.scrolled{border-color:var(--border);box-shadow:0 1px 8px rgba(0,0,0,.06)}
.nav-inner{max-width:1120px;margin:0 auto;padding:0 1.5rem;height:100%;display:flex;align-items:center;gap:2rem}
.nav-logo{font-size:1.2rem;font-weight:800;color:var(--text)}
.nav-logo{color:var(--text)}
.nav-links{display:flex;gap:1.75rem;margin-left:auto}
.nav-links a{font-size:.9rem;font-weight:500;color:var(--text-2);transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--blue)}
.nav-cta{background:var(--blue);color:#fff;padding:.5rem 1.25rem;border-radius:8px;font-size:.875rem;font-weight:600;white-space:nowrap;transition:background .2s}
.nav-cta:hover{background:var(--blue-d)}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px;margin-left:auto}
.hamburger span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:transform .25s,opacity .25s}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* HERO */
.hero{padding:calc(var(--nav-h) + 5rem) 0 5rem;overflow:hidden}
.hero-inner{max-width:1120px;margin:0 auto;padding:0 1.5rem;display:grid;grid-template-columns:1fr 480px;gap:4rem;align-items:center}
.hero-avail{font-size:.8rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--blue);margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}
.hero-avail::before{display:none}
.hero h1{margin-bottom:1.25rem;color:var(--text)}
.hero-sub{font-size:1.05rem;color:var(--text-2);max-width:520px;margin-bottom:2rem;line-height:1.7}
.hero-actions{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:2rem}
.hero-links{display:flex;gap:1.25rem;flex-wrap:wrap}
.hero-links a{display:flex;align-items:center;gap:.4rem;font-size:.875rem;font-weight:500;color:var(--text-3);transition:color .2s}
.hero-links a:hover{color:var(--blue)}

/* HERO VISUAL: profile photo */
.hero-visual{display:flex;justify-content:center;align-items:center}
.hero-photo-wrap{position:relative;width:360px;height:420px}
.hero-photo-bg{position:absolute;inset:0;background:var(--blue-soft);border-radius:24px;border:1px solid var(--blue-rule)}
.hero-photo-bg::before{content:'';position:absolute;top:12px;left:12px;right:-12px;bottom:-12px;background:var(--blue-rule);border-radius:24px;z-index:-1}
.hero-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center top;border-radius:24px}

/* SERVICES */
.services{padding:5rem 0;background:var(--bg-2)}
.services-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1.25rem}
.service-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;transition:border-color .2s,box-shadow .2s}
.service-card:hover{border-color:var(--blue-rule);box-shadow:0 4px 20px rgba(37,99,235,.07)}
.service-icon{width:40px;height:40px;border-radius:8px;background:var(--blue-soft);display:flex;align-items:center;justify-content:center;margin-bottom:1rem}
.service-icon svg{color:var(--blue)}
.service-card h3{margin-bottom:.4rem;font-size:1rem}
.service-card p{font-size:.875rem;line-height:1.6}

/* PROJECTS */
.projects{padding:5rem 0}
.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(480px,1fr));gap:2rem}
.project-card{background:#fff;border:1px solid var(--border);border-radius:16px;overflow:hidden;transition:box-shadow .2s,transform .2s}
.project-card:hover{box-shadow:0 8px 32px rgba(37,99,235,.1);transform:translateY(-2px)}
.project-screens{background:var(--blue-soft);padding:2rem 2rem 0;display:flex;justify-content:center;gap:1rem;min-height:220px}
.phone{width:110px;border-radius:16px;overflow:hidden;box-shadow:0 8px 24px rgba(0,0,0,.12);flex-shrink:0;position:relative;background:#fff}
.phone::before{content:'';display:block;height:12px;background:#1e293b;border-radius:16px 16px 0 0}
.phone::after{content:'';display:block;height:4px;background:#1e293b;border-radius:0 0 16px 16px;margin-top:auto}
.phone img{width:100%;display:block}
.phone-main{width:130px;margin-top:-1rem;z-index:1}
.project-body{padding:1.5rem}
.project-top{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem;margin-bottom:.75rem}
.project-title{font-size:1.1rem;font-weight:700;color:var(--text)}
.project-status{font-size:.7rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:.25rem .6rem;border-radius:4px;white-space:nowrap}
.status-live{background:#dcfce7;color:#15803d}
.status-active{background:#dbeafe;color:#1e40af}
.status-build{background:#fef9c3;color:#854d0e}
.status-complete{background:#f1f5f9;color:#475569}
.project-problem{font-size:.85rem;color:var(--text-3);font-style:italic;border-left:3px solid var(--blue-rule);padding-left:.75rem;margin-bottom:.75rem}
.project-desc{font-size:.9rem;color:var(--text-2);margin-bottom:1rem;line-height:1.65}
.project-stack{display:flex;flex-wrap:wrap;gap:.4rem;margin-bottom:1rem}
.tag{font-size:.72rem;font-weight:600;background:var(--blue-soft);color:var(--blue);padding:.2rem .55rem;border-radius:4px}
.project-links{display:flex;gap:.75rem}
.project-links a{font-size:.8rem;font-weight:600;color:var(--blue);display:flex;align-items:center;gap:.3rem;transition:color .2s}
.project-links a:hover{color:var(--blue-d)}

/* AT A GLANCE */
.glance{padding:5rem 0;background:var(--bg-2)}
.glance-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.25rem}
.glance-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.75rem 1.5rem}
.glance-num{font-size:2.6rem;font-weight:800;color:var(--blue);line-height:1;letter-spacing:-.02em;margin-bottom:.9rem}
.glance-title{font-size:.95rem;font-weight:700;color:var(--text);margin-bottom:.3rem}
.glance-note{font-size:.83rem;color:var(--text-3);line-height:1.55}

/* ABOUT */
.about{padding:5rem 0}
.about-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:4rem;align-items:start}
.about-lead{font-size:1.15rem;line-height:1.7;font-weight:500;color:var(--text)}
.about-text p{line-height:1.75;margin-bottom:1rem}
.facts{margin:1.75rem 0;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:#fff}
.fact{display:grid;grid-template-columns:120px 1fr;gap:1rem;padding:.85rem 1.1rem;border-bottom:1px solid var(--border);font-size:.9rem}
.fact:last-child{border-bottom:none}
.fact dt{font-weight:600;color:var(--text-3)}
.fact dd{color:var(--text)}
.about-actions{display:flex;gap:1rem;flex-wrap:wrap}
.about-side h3{font-size:.95rem;font-weight:700;margin-bottom:1.1rem}
.skills-block,.experience-block{margin-bottom:2.5rem}
.skills-block:last-child,.experience-block:last-child{margin-bottom:0}
.skill-group{margin-bottom:1.1rem}
.skill-group h4{font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text-3);margin-bottom:.5rem}
.skill-tags{display:flex;flex-wrap:wrap;gap:.4rem}
.skill-tags .tag{font-size:.8rem;padding:.3rem .65rem}
.exp-item{border-left:2px solid var(--blue-rule);padding-left:1rem;margin-bottom:1.25rem}
.exp-item:last-child{margin-bottom:0}
.exp-role{font-weight:700;font-size:.92rem;color:var(--text)}
.exp-co{font-size:.85rem;color:var(--blue);margin-top:.1rem}
.exp-period{font-size:.78rem;color:var(--text-3);margin-top:.2rem}

/* CONTACT */
.contact{padding:5rem 0;background:var(--bg-2)}
.contact-inner{display:grid;grid-template-columns:.9fr 1.1fr;gap:3rem;align-items:start}
.contact-list{display:flex;flex-direction:column;gap:.85rem;margin-bottom:1.5rem}
.channel{display:flex;align-items:center;gap:1rem;padding:1rem 1.1rem;background:#fff;border:1px solid var(--border);border-radius:var(--radius);transition:border-color .2s}
a.channel:hover{border-color:var(--blue)}
.channel-icon{width:40px;height:40px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--blue-soft);color:var(--blue)}
.channel-icon-wa{background:#dcfce7;color:#15803d}
.channel-text{min-width:0}
.channel h3{font-size:.85rem;font-weight:700;color:var(--text)}
.channel p{font-size:.85rem;color:var(--text-2);overflow-wrap:anywhere}
.contact-open{font-size:.9rem;line-height:1.65;color:var(--text-2);border-left:3px solid var(--blue-rule);padding-left:1rem}
.contact-open strong{color:var(--text)}
.form-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:2rem}
.form-card h3{font-size:1.1rem;margin-bottom:1.25rem}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:0 1rem}
.form-group{margin-bottom:1.1rem}
.form-group label{display:block;font-size:.82rem;font-weight:600;margin-bottom:.35rem;color:var(--text-2)}
.form-group input,.form-group select,.form-group textarea{width:100%;border:1.5px solid var(--border);border-radius:8px;padding:.7rem .9rem;font-family:inherit;font-size:.9rem;color:var(--text);background:#fff;transition:border-color .2s}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--blue);outline:none}
.form-group .invalid{border-color:#dc2626}
.form-group textarea{resize:vertical;min-height:130px}
.field-error{display:block;font-size:.76rem;color:#dc2626;margin-top:.25rem}
.field-error:empty{display:none}
.form-submit{width:100%}
.form-hint{font-size:.78rem;color:var(--text-3);text-align:center;margin-top:.75rem}
.form-note{margin-top:1rem;padding:.85rem 1rem;font-size:.85rem;line-height:1.55;color:var(--text);background:var(--blue-soft);border:1px solid var(--blue-rule);border-radius:8px}
.form-note[hidden]{display:none}

/* FOOTER */
.footer{border-top:1px solid var(--border);padding:2.5rem 0;background:#fff}
.footer-inner{max-width:1120px;margin:0 auto;padding:0 1.5rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.footer-logo{font-size:1rem;font-weight:800;color:var(--text)}
.footer-copy{font-size:.8rem;color:var(--text-3)}
.footer-links{display:flex;gap:1rem}
.footer-links a{font-size:.8rem;color:var(--text-3);transition:color .2s}
.footer-links a:hover{color:var(--blue)}

/* BACK TO TOP */
#back-to-top{position:fixed;bottom:1.5rem;right:1.5rem;width:40px;height:40px;border-radius:50%;background:var(--blue);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(37,99,235,.3);transition:background .2s,transform .15s;z-index:99}
#back-to-top:hover{background:var(--blue-d);transform:translateY(-2px)}

/* SCROLL REVEAL (only active when JavaScript is running) */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .45s ease,transform .45s ease}
.js .reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}
section[id]{scroll-margin-top:calc(var(--nav-h) - 1px)}
#back-to-top[hidden]{display:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--blue);outline-offset:2px}

/* RESPONSIVE */
@media (max-width:900px){
  .hero-inner{grid-template-columns:1fr;text-align:center}
  .hero-visual{order:-1}
  .hero-actions,.hero-links{justify-content:center}
  .hero-sub{margin-left:auto;margin-right:auto}
  .about-inner,.contact-inner{grid-template-columns:1fr}
  .glance-grid{grid-template-columns:repeat(2,1fr)}
  .projects-grid{grid-template-columns:1fr}
  .hero-photo-wrap{width:280px;height:340px}
}
@media (max-width:640px){
  .nav-links,.nav-cta{display:none}
  .nav-links.open{display:flex;flex-direction:column;position:absolute;top:var(--nav-h);left:0;right:0;background:#fff;padding:1.5rem;border-bottom:1px solid var(--border);gap:1rem;box-shadow:0 8px 24px rgba(0,0,0,.08)}
  .hamburger{display:flex}
  .services-grid{grid-template-columns:1fr}
  .hero-photo-wrap{width:240px;height:300px}
  .form-row{grid-template-columns:1fr}
  .form-card{padding:1.5rem}
  .fact{grid-template-columns:1fr;gap:.15rem}
}
@media (max-width:420px){
  .glance-grid{grid-template-columns:1fr}
}

/* 404 page */
.notfound{min-height:100vh;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;max-width:1120px;margin:0 auto;padding:2rem 1.5rem}
.notfound h1{margin:.4rem 0 1rem}
.notfound p{max-width:480px;margin-bottom:1.75rem}