:root{
  --bg:#f6f8fa;
  --card:#ffffff;
  --accent:#0b6efd;
  --muted:#6b7280;
  --max-width:960px;
}
*{box-sizing:border-box}
body{font-family:Segoe UI, Roboto, Arial, sans-serif;background:var(--bg);color:#111;margin:0}
.container{max-width:var(--max-width);margin:0 auto;padding:24px}
.site-header{background:linear-gradient(90deg,#0b6efd22,transparent);padding:32px 0;margin-bottom:18px}
.site-header h1{margin:0;font-size:28px}
.tagline{margin:6px 0 0;color:var(--muted)}
h2{margin-top:0}
.skills-list{display:flex;flex-wrap:wrap;gap:8px;padding:0;list-style:none}
.skills-list li{background:var(--card);padding:8px 12px;border-radius:6px;border:1px solid #e6e9ee;opacity:0;transform:translateY(8px);transition:transform .18s ease,box-shadow .18s ease;}

/* Skills list entrance animation (staggered) */
.skills-list li{animation:skillFade .42s ease forwards;}
.skills-list li:nth-child(1){animation-delay:0.04s}
.skills-list li:nth-child(2){animation-delay:0.10s}
.skills-list li:nth-child(3){animation-delay:0.16s}
.skills-list li:nth-child(4){animation-delay:0.22s}
.skills-list li:nth-child(5){animation-delay:0.28s}
.skills-list li:nth-child(6){animation-delay:0.34s}
.skills-list li:nth-child(7){animation-delay:0.40s}
.skills-list li:nth-child(8){animation-delay:0.46s}

.skills-list li:hover{transform:translateY(-4px) scale(1.02);box-shadow:0 10px 20px rgba(11,110,237,0.06)}

@keyframes skillFade{
  from{opacity:0;transform:translateY(8px)}
  to{opacity:1;transform:translateY(0)}
}

@media (prefers-reduced-motion: reduce){
  .skills-list li{animation:none;transition:none;opacity:1;transform:none}
}
.projects{
  /* Masonry-like layout using CSS columns to avoid equal-height rows */
  column-gap:18px;
  column-fill: auto;
  /* default: single column (mobile first). Breakpoints below override */
  column-count:1;
}
.projects[data-columns='1']{column-count:1}
.projects[data-columns='2']{column-count:2}
.project{background:var(--card);padding:0;border-radius:10px;border:1px solid #e6e9ee;box-shadow:0 6px 18px rgba(11,110,237,0.06);overflow:hidden;display:inline-block;width:100%;margin:0 0 18px;break-inside:avoid;vertical-align:top;transition:transform .18s ease,box-shadow .18s ease}

/* Featured project container (full-width) */
.featured{margin-bottom:18px}
.featured .project{display:block;width:100%;margin:0;border-left:4px solid rgba(11,110,237,0.06)}

/* Featured slider styles (fade) */
.featured{position:relative}
.featured .slides{position:relative;width:100%;overflow:hidden}
.featured .slide{position:absolute;top:0;left:0;width:100%;opacity:0;pointer-events:none;transition:opacity .6s ease;}
.featured .slide.active{opacity:1;position:relative;pointer-events:auto}
.featured .slide .project{border-left:none}
.featured .card-header{flex-direction:column;align-items:flex-start;gap:12px}
.featured .card-header img{width:100%;height:300px;object-fit:contain;flex:0 0 auto;border-radius:8px}
.featured .card-title{margin-top:6px}
.featured .card-header{position:relative}
.featured .featured-prev,.featured .featured-next{position:absolute;top:12px;transform:none;background:var(--card);border:1px solid #eef2ff;padding:8px 10px;border-radius:8px;color:var(--accent);cursor:pointer;box-shadow:0 6px 18px rgba(11,110,237,0.06)}
.featured .featured-prev{left:12px}
.featured .featured-next{right:12px}
.featured .featured-dots{position:absolute;left:50%;transform:translateX(-50%);bottom:10px;display:flex;gap:8px}
.featured .featured-dots button{width:8px;height:8px;border-radius:50%;background:#dbeafe;border:none;opacity:.9;cursor:pointer}
.featured .featured-dots button.active{background:var(--accent)}

@media (max-width:720px){
  /* show smaller prev/next buttons on mobile */
  .featured .featured-prev,.featured .featured-next{display:block;padding:6px 8px;font-size:16px}
  .featured .featured-prev,.featured .featured-next{z-index:12}
}

/* Mobile fixes for featured: make image responsive and stack header */
@media (max-width:899px){
  .featured .card-header{flex-direction:column;align-items:flex-start;gap:8px}
  .featured .card-header img{width:100%;height:180px;flex:0 0 auto;border-radius:6px;object-fit:contain}
  /* let slides size naturally on mobile (avoid fixed absolute stacking issues) */
  .featured .slides{height:auto}
  .featured .slide{position:relative;opacity:1;pointer-events:auto}
  .featured .slide:not(.active){display:none}
}
.card-header{display:flex;align-items:center;gap:12px;padding:12px 14px;background:linear-gradient(180deg,#ffffff, #fbfdff)}
.card-header img{width:110px;height:78px;object-fit:contain;border-radius:6px;flex:0 0 110px}
.card-title h3{margin:0;font-size:16px}
.card-title .muted{margin:4px 0 0;color:var(--muted);font-size:13px}
.accordion-toggle{margin-left:auto;background:transparent;border:1px solid #e6e9ee;padding:6px 10px;border-radius:6px;cursor:pointer;color:var(--accent);font-weight:600}
.accordion-toggle:hover{background:#f1f6ff}
.accordion-content{padding:0 14px;border-top:1px solid #f1f3f6;overflow:hidden;max-height:0;opacity:0;transition:max-height 260ms ease, opacity 180ms ease, padding 180ms ease}
.accordion-content > *{margin:0 0 10px}
.project.open{border-color:rgba(11,110,237,0.12)}
.project.open .card-header{background:linear-gradient(90deg,#f7fbff,#ffffff)}
.project.open .accordion-content{max-height:1200px;opacity:1;padding:12px 14px}

/* Desktop excerpt state: show a short preview with fade */
@media (min-width:900px){
  .accordion-content{max-height:6.5em;opacity:1;padding:12px 14px;overflow:hidden;position:relative}
  .accordion-content::after{content:'';position:absolute;left:0;right:0;bottom:0;height:2.2em;background:linear-gradient(180deg, rgba(255,255,255,0), var(--card));pointer-events:none}
}

.site-footer{padding:28px 0;color:var(--muted);margin-top:32px;background:linear-gradient(90deg,#0b6efd11,#ffffff);border-top:1px solid #e9eef8}
.footer-grid{display:grid;grid-template-columns:1fr 220px 180px;gap:20px;align-items:start}
.footer-about h4,.footer-contact h4,.footer-links h4{margin:0 0 8px;font-size:16px}
.footer-about p{margin:0 0 6px;color:#334155}
.footer-links ul{list-style:none;padding:0;margin:0}
.footer-links li{margin:6px 0}
.footer-links a{color:var(--accent);text-decoration:none}
.footer-bottom{padding-top:12px;text-align:center;color:var(--muted);font-size:13px}

#contact ul{padding-left:18px}

/* Contact grid */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:12px}
.contact-card{display:flex;align-items:flex-start;gap:10px;background:var(--card);padding:12px;border-radius:8px;border:1px solid #eef2ff}
.contact-card .icon{color:var(--accent);flex:0 0 28px;display:flex;align-items:center;justify-content:center}
.contact-body .contact-title{font-weight:700;font-size:13px;margin-bottom:4px}
.contact-body a{color:var(--accent);text-decoration:none}

@media (max-width:720px){.contact-grid{grid-template-columns:1fr;gap:10px}}

@media (max-width:899px){
  .projects{column-count:1}
  .card-header{flex-direction:row;align-items:center}
  .footer-grid{grid-template-columns:1fr}
  .container{padding:16px}
  .site-header{padding:20px 0}
}

/* Medium: use CSS Grid for consistent two-column layout */
@media (min-width:900px) and (max-width:1279px){
  .projects{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;column-count:initial}
  .project{display:block;width:auto;margin:0}
}

/* Desktop: use CSS columns for masonry-like flow (3 columns) */
@media (min-width:1280px){
  .projects{display:block;column-count:3;column-gap:18px}
  .project{display:inline-block;width:100%;margin:0 0 18px}
}

/* Desktop: show full content and hide accordion toggles */
@media (min-width:900px){
  .accordion-toggle{display:none}
  .accordion-content{max-height:none !important;opacity:1 !important;padding:12px 14px !important;overflow:visible}
  .accordion-content > *{margin-bottom:10px}
}

/* Use CSS Grid on wider viewports as a robust fallback to columns */
@media (min-width:900px){
  .projects{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;column-count:initial}
  .project{display:block;width:auto;margin:0}
}
@media (min-width:1280px){
  .projects{grid-template-columns:repeat(3,1fr)}
}

/* Hover effect for cards */
.project:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(11,110,237,0.09)}