:root{
  --bg:#070507;
  --surface:#0d0b10;
  --text:#e9e7ee;
  --muted:#a9a2b6;
  --accent:#4a2a6a; /* darker purple */
  --accent-contrast:#6f4bd6;
  --accent-2:#2f1743; /* deep muted purple */
  --radius:12px;
  --glass: rgba(255,255,255,0.025);
  --border: rgba(255,255,255,0.06);
  --muted-border: rgba(255,255,255,0.03);
  --nav-bg: linear-gradient(180deg,rgba(10,10,12,0.98),rgba(10,10,12,0.995));
  --tooltip-bg: rgba(2,4,8,0.9);
  --bg-image: linear-gradient(180deg,rgba(123,97,255,0.08),rgba(6,2,12,0.8)), url('../img/demo/2560x1440-bg.webp');
  --input-bg: rgba(255,255,255,0.02);
  --input-focus: rgba(125,110,255,0.12);
  --input-shadow-inset: inset 0 1px 0 rgba(255,255,255,0.02);
  --shadow: 0 10px 30px rgba(2,6,10,0.35);
  --shadow-strong: 0 22px 44px rgba(2,6,10,0.6);
  --elev: 0 6px 18px rgba(2,6,10,0.18);
}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;line-height:1.6;margin:0;-webkit-font-smoothing:antialiased;background-image:var(--bg-image);background-size:cover;background-position:center fixed;background-color:var(--bg)}
body.loading{overflow:hidden}
.page-loader{position:fixed;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0.7rem;background:var(--bg);background-image:var(--bg-image);background-size:cover;background-position:center fixed;z-index:9999;transition:opacity .3s ease,visibility 0s linear .3s}
.page-loader.hidden{opacity:0;visibility:hidden}
.page-loader .spinner{width:54px;height:54px;border-radius:50%;border:3px solid var(--muted-border);border-top-color:var(--accent-contrast);border-right-color:var(--accent);animation:spin .8s linear infinite;box-shadow:0 12px 30px rgba(2,6,10,0.35)}
.page-loader .loader-text{font-size:0.95rem;letter-spacing:0.2px;color:var(--muted)}
@keyframes spin{to{transform:rotate(360deg)}}
.container{max-width:1100px;margin:0 auto;padding:2rem}
.container-wide{max-width:100%}
.skills-section{clear:both;width:100%}
.site-header{backdrop-filter:blur(6px);position:sticky;top:0;z-index:40;border-bottom:1px solid var(--muted-border);background:linear-gradient(180deg,var(--glass),transparent)}
.site-header .container{display:flex;gap:1rem;align-items:center}
.logo{font-weight:700;color:var(--text);text-decoration:none;font-size:1.05rem;letter-spacing:0.2px}
.logo{display:inline-flex;align-items:center;gap:0.6rem}
.header-logo{width:44px;height:44px;object-fit:contain}
.logo-text{font-weight:700}
.menu-toggle{display:none;background:transparent;border:0;color:var(--muted);font-size:1.2rem;margin-left:auto}
.nav{margin-left:auto}
.nav-list{display:flex;gap:1rem;list-style:none;margin:0;padding:0}
.nav-list a{color:var(--muted);text-decoration:none;padding:0.5rem 0.6rem 0.7rem;border-radius:8px;transition:all .18s ease;position:relative}
.nav-list a::before{content:"";position:absolute;left:0.6rem;right:0.6rem;bottom:0.2rem;height:2px;width:0;background:var(--accent-contrast);transition:width .2s ease}
.nav-list a:hover,.nav-list a:focus{color:var(--text);background:var(--glass);transform:translateY(-2px)}
.nav-list a:hover::before,.nav-list a:focus::before{width:calc(100% - 1.2rem)}
.theme-toggle{background:transparent;border:0;color:var(--muted);font-size:1.1rem;cursor:pointer;margin-left:0.6rem}
.hero{padding:4rem 0}
.hero-grid{display:grid;grid-template-columns:1fr 320px;gap:2rem;align-items:center}
.hero h1{font-size:2.2rem;margin:0;line-height:1.05}
.lead{color:var(--text);font-weight:600;margin-top:0.4rem}
.muted{color:var(--muted)}
.avatar{width:180px;height:180px;object-fit:cover;border-radius:18px;border:1px solid var(--muted-border);box-shadow:0 10px 30px rgba(3,6,10,0.6)}
.hero-right{display:flex;flex-direction:column;align-items:center}
.meta{margin-top:1rem;color:var(--muted);font-size:0.95rem;display:grid;gap:0.5rem}
.section{padding:3rem 0;border-top:none}
.section h2{margin:0 0 1rem 0;font-weight:700}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.1rem}

/* Projects slider styles */
.projects-slider{display:flex;align-items:center;gap:0.8rem;position:relative}
.projects-track-wrapper{overflow:hidden;flex:1}
.projects-track{display:flex;gap:1.1rem;align-items:stretch;padding:6px 0}
.projects-track .card{flex:0 0 280px;min-width:220px}

@media (max-width:1100px){
  .projects-track .card{flex:0 0 240px}
}
@media (max-width:700px){
  .projects-track .card{flex:0 0 85%;min-width:0}
}
.card{background:linear-gradient(180deg,var(--glass),var(--glass));padding:1rem;border-radius:14px;overflow:hidden;border:1px solid var(--border);backdrop-filter:blur(6px);box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .22s ease}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-strong)}
.card img{width:100%;height:150px;object-fit:cover;border-radius:10px;margin-bottom:0.6rem}
.tags{color:var(--accent-contrast);font-size:0.85rem;margin:0.4rem 0;font-weight:600}
.small{color:var(--muted);font-size:0.95rem}
.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;margin-top:1rem}
.info-grid a{color:var(--accent-contrast);text-decoration:none;font-weight:600}
.info-grid a:hover,.info-grid a:focus{text-decoration:underline}
.timeline .item{display:flex;gap:1rem;padding:0.6rem 0;border-bottom:1px dashed var(--muted-border);align-items:center}
.timeline time{width:140px;color:var(--muted);font-weight:600}
.resume-grid{display:grid;grid-template-columns:1fr 380px;gap:1.2rem;align-items:start}
.resume-card{background:linear-gradient(180deg,var(--glass),var(--glass));padding:1rem;border-radius:14px;border:1px solid var(--border);backdrop-filter:blur(6px);box-shadow:var(--elev)}
.resume-card h4{margin:0 0 0.4rem 0}
.resume-card ul{margin:0.4rem 0 0 1rem;color:var(--muted)}
.skill-badges{display:flex;flex-wrap:wrap;gap:0.5rem;margin-top:0.8rem}
.badge{background:rgba(111,75,214,0.12);color:var(--accent-contrast);padding:0.35rem 0.6rem;border-radius:999px;font-size:0.85rem;border:1px solid rgba(111,75,214,0.18);font-weight:600;box-shadow:0 6px 16px rgba(80,50,160,0.06)}
.highlight{background:linear-gradient(180deg,rgba(74,42,106,0.06),rgba(47,23,67,0.03));padding:1rem;border-radius:10px;margin-bottom:1rem;position:relative;box-shadow:var(--elev)}
.highlight{background:linear-gradient(180deg,rgba(111,75,214,0.12),rgba(74,42,106,0.06));padding:1rem;border-radius:10px;margin-bottom:1rem;position:relative;box-shadow:0 12px 30px rgba(75,40,160,0.10);border:1px solid rgba(111,75,214,0.08)}
.highlight::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:6px;border-top-right-radius:6px;border-bottom-right-radius:6px;background:linear-gradient(180deg,var(--accent-contrast),var(--accent-2));box-shadow:0 12px 30px rgba(111,75,214,0.14)}
.contact-form{max-width:980px;margin-top:1rem;padding:1.2rem;border-radius:14px;background:var(--glass);border:1px solid var(--border);box-shadow:var(--shadow)}
.contact-form .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0.9rem}
.contact-form input,.contact-form textarea{padding:0.75rem;border-radius:10px;border:1px solid var(--muted-border);background:var(--input-bg);color:var(--text);outline:none;box-shadow:var(--input-shadow-inset);transition:box-shadow .15s ease,border-color .12s ease,transform .12s ease;resize:none;-webkit-resize:none;overflow:auto}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:rgba(150,150,160,0.45)}
.contact-form input:focus,.contact-form textarea:focus{box-shadow:0 8px 24px rgba(2,6,10,0.12), 0 0 0 4px var(--input-focus);border-color:var(--accent);transform:translateY(-1px)}
.contact-form textarea{grid-column:1/3;min-height:160px}
.contact-form .btn{margin-top:0.9rem;padding:0.8rem 1.1rem;font-size:1rem;border-radius:10px}
.contact-form .btn{background:linear-gradient(90deg,var(--accent-contrast, var(--accent)),var(--accent));color:#fff;border:none;box-shadow:0 10px 30px rgba(74,42,106,0.12)}
.contact-form .btn:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(74,42,106,0.16)}
.btn{display:inline-block;padding:0.65rem 1rem;background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#04111a;border-radius:10px;text-decoration:none;font-weight:600}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}
.site-footer{border-top:1px solid var(--muted-border);padding:1rem 0;margin-top:2rem}
.site-footer .container{display:flex;justify-content:space-between;align-items:center;gap:1rem}
.socials a{color:var(--muted);text-decoration:none;margin-left:0.6rem}

/* mobile menu */
body.nav-open .nav{position:fixed;inset:64px 0 0 0;background:var(--nav-bg);display:block;padding:1.2rem}
body.nav-open .nav-list{flex-direction:column;gap:0.6rem}
body.nav-open .menu-toggle{transform:rotate(90deg)}

/* light theme - unified overrides */
body.light{
  --bg:#f3f2f6;
  --surface:#ffffff;
  --text:#0f1420;
  --muted:#6d6b77;
  --accent:#7b61ff;
  --accent-2:#5a3fa8;
  --glass: rgba(255,255,255,0.92);
  --border: rgba(12,18,28,0.06);
  --muted-border: rgba(12,18,28,0.03);
  --shadow: 0 6px 20px rgba(12,18,28,0.06);
  --shadow-strong: 0 20px 40px rgba(12,18,28,0.08);
  --elev: 0 6px 18px rgba(12,18,28,0.06);
  --nav-bg: linear-gradient(180deg,rgba(255,255,255,0.98),rgba(250,250,250,0.995));
  --tooltip-bg: rgba(10,12,18,0.95);
  --bg-image: linear-gradient(180deg,rgba(255,255,255,0.24),rgba(255,255,255,0.6)), url('../img/demo/2560x1440-bg.webp');
  --tooltip-bg: rgba(255,255,255,0.95);
  --input-bg: rgba(255,255,255,0.98);
  --input-focus: rgba(123,97,255,0.14);
  --input-shadow-inset: inset 0 1px 0 rgba(255,255,255,0.6);
}

/* details/summary (foldable resume) */
details.resume-card{background:linear-gradient(180deg,var(--glass),var(--glass));padding:0;border-radius:12px;border:1px solid var(--muted-border);overflow:hidden}
details.resume-card > summary{list-style:none;cursor:pointer;padding:0.9rem 1rem;display:block}
details.resume-card > summary::-webkit-details-marker{display:none}
details.resume-card > summary:after{content:"▾";float:right;transform:translateY(2px);color:var(--muted)}
details.resume-card[open] > summary:after{content:"▴"}
details.resume-card .resume-body{padding:0.9rem 1rem 1.2rem 1rem;border-top:1px dashed var(--muted-border);color:var(--muted)}
details.resume-card h4{margin:0 0 0.4rem 0;color:var(--text)}

/* prevent selection of small helper text inside summary */
details.resume-card > summary .muted,
details.resume-card > summary .no-select{
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* tools grid for icons */
.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(80px,1fr));gap:0.6rem;align-items:center}
.tool-item{background:var(--glass);text-align:center;padding:0.6rem;border-radius:10px;border:1px solid var(--muted-border);box-shadow:var(--elev);text-decoration:none}
.tool-icon{width:48px;height:48px;display:block;margin:0 auto 0.4rem}
.tool-item figcaption{font-size:0.85rem;color:var(--text)}

/* tool hover/focus - adapt to theme */
.tool-item:hover,.tool-item:focus{
  transform:translateY(-4px);
  border-color:var(--accent-2);
  background:linear-gradient(180deg,rgba(0,0,0,0.03),rgba(0,0,0,0.02));
  box-shadow:0 12px 30px rgba(2,6,10,0.18);
}

/* ensure hover background is lighter in light mode */
body.light .tool-item:hover,body.light .tool-item:focus{
  background:linear-gradient(180deg,rgba(255,255,255,0.6),rgba(255,255,255,0.5));
  border-color:rgba(0,0,0,0.06);
}

/* tooltip */
.tool-item{position:relative}
.tool-item::after{content:attr(data-tooltip);position:absolute;left:50%;transform:translateX(-50%) translateY(8px);white-space:nowrap;background:var(--tooltip-bg);color:var(--text);padding:6px 8px;border-radius:6px;font-size:12px;opacity:0;pointer-events:none;transition:opacity .12s ease,transform .12s ease}
.tool-item:hover::after,.tool-item:focus::after{opacity:1;transform:translateX(-50%) translateY(2px)}

/* Skills bars */
.skills-list{display:flex;flex-direction:column;gap:0.9rem;margin-top:0.6rem}
.skills-groups,.skills-chart{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.2rem;margin-top:0.8rem}
.skills-group{background:linear-gradient(180deg,var(--glass),var(--glass));padding:1rem;border-radius:14px;border:1px solid var(--border);box-shadow:var(--elev);display:flex;flex-direction:column;gap:0.6rem;min-width:0}
.skills-group-title{margin:0 0 0.2rem 0;font-size:1rem;color:var(--text)}
.skills-group .skills-list{margin-top:0.2rem}
.skill{display:block}
.skill-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:0.45rem}
.skill-percent{color:var(--muted);font-size:0.95rem}
.skill-track{height:14px;background:linear-gradient(180deg,var(--glass),var(--glass));border-radius:999px;padding:2px;border:1px solid var(--muted-border);overflow:hidden}
.skill-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent-contrast),rgba(159,119,255,1));box-shadow:0 8px 22px rgba(100,65,200,0.24), inset 0 -2px 8px rgba(255,255,255,0.04);}
.skill-track[aria-hidden="true"] .skill-fill{opacity:0.98}

@media (max-width:1100px){
  .skills-groups,.skills-chart{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:700px){
  .skills-groups,.skills-chart{grid-template-columns:1fr}
}

@media (max-width:700px){
  .tool-item figcaption{font-size:0.78rem}
  .tool-icon{width:40px;height:40px}
}


@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .hero-right{order:-1;display:flex;justify-content:center;margin-bottom:1rem}
  .contact-form .form-grid{grid-template-columns:1fr}
  .nav-list{display:none}
  .menu-toggle{display:block}
  .resume-grid{grid-template-columns:1fr}
}