/* Musbaudeen Oyedeji - portfolio (modern build)
   Midnight navy + gold. Space Grotesk / IBM Plex Sans / IBM Plex Mono */

:root{
  --bg:#0A1120; --bg-2:#0E1728; --bg-surface:rgba(255,255,255,0.04);
  --text:#EAEEF6; --text-muted:#94A1B8;
  --border:rgba(255,255,255,0.09); --border-strong:rgba(255,255,255,0.16);
  --accent:#E7B048; --accent-2:#F3C978; --accent-strong:#F0B84E;
  --accent-soft:rgba(231,176,72,0.12);
  --accent-contrast:#0A1120;
  --grad:linear-gradient(120deg,#E7B048,#F3C978 55%,#E7B048);
  --shadow:0 24px 60px -24px rgba(0,0,0,0.6);
  --glass:rgba(255,255,255,0.045);
  --maxw:1160px; --r:18px;
}
[data-theme="light"]{
  --bg:#F2F4F8; --bg-2:#E9EDF4; --bg-surface:#FFFFFF;
  --text:#0F1A2C; --text-muted:#5A6883;
  --border:rgba(16,26,44,0.10); --border-strong:rgba(16,26,44,0.18);
  --accent:#B07714; --accent-2:#8A5A0C; --accent-strong:#8A560C;
  --accent-soft:rgba(176,119,20,0.10);
  --accent-contrast:#FFFFFF;
  --grad:linear-gradient(120deg,#B07714,#8A5A0C 55%,#B07714);
  --shadow:0 22px 50px -24px rgba(16,26,44,0.30);
  --glass:rgba(255,255,255,0.85);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  background:var(--bg); color:var(--text);
  font-family:"IBM Plex Sans",system-ui,sans-serif; font-size:17px; line-height:1.65;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
  transition:background .4s ease,color .4s ease;
}
h1,h2,h3{font-family:"Space Grotesk",sans-serif;font-weight:700;line-height:1.07;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

.eyebrow{font-family:"IBM Plex Mono",monospace;font-size:.74rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--accent);margin-bottom:1.1rem}

/* scroll progress */
.scroll-progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:60;
  background:var(--grad);transition:width .1s linear}

/* NAV */
.nav{position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--bg) 80%,transparent);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:.9rem 1.5rem;
  display:flex;align-items:center;justify-content:space-between;gap:1.5rem}
.wordmark{font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:1.35rem;
  letter-spacing:-.02em;white-space:nowrap}
.wordmark-a{color:var(--accent)} .wordmark-b{color:var(--text)}
.wordmark.small{font-size:1.15rem}
.nav-links{display:flex;gap:1.9rem}
.nav-links a{font-size:.94rem;color:var(--text-muted);position:relative;padding:.2rem 0;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--accent);transition:width .25s}
.nav-links a:hover::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:.6rem}
.theme-toggle{width:40px;height:40px;border-radius:50%;border:1px solid var(--border-strong);
  background:var(--bg-surface);color:var(--text);cursor:pointer;display:grid;place-items:center;
  transition:border-color .2s,transform .3s,background .3s}
.theme-toggle:hover{border-color:var(--accent);transform:rotate(20deg)}
.icon-sun{display:none}
[data-theme="light"] .icon-sun{display:block}
[data-theme="light"] .icon-moon{display:none}
.menu-btn{display:none;flex-direction:column;gap:5px;width:40px;height:40px;
  border:1px solid var(--border-strong);border-radius:10px;background:var(--bg-surface);
  cursor:pointer;align-items:center;justify-content:center}
.menu-btn span{display:block;width:18px;height:2px;background:var(--text);transition:.25s}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{display:none;flex-direction:column;padding:0 1.5rem;border-bottom:1px solid var(--border);background:var(--bg)}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:.85rem 0;color:var(--text-muted);border-top:1px solid var(--border)}
.mobile-menu a:first-child{border-top:none}

/* LAYOUT */
.section{max-width:var(--maxw);margin:0 auto;padding:6.5rem 1.5rem}
.section-head{max-width:760px;margin-bottom:3.2rem}
.section-head h2{font-size:clamp(1.75rem,3.8vw,2.7rem)}

/* HERO */
.hero{position:relative;overflow:hidden;padding:7rem 1.5rem 5rem;
  border-bottom:1px solid var(--border)}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.hero-bg .blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5}
.hero-bg .b1{width:520px;height:520px;background:radial-gradient(circle,rgba(231,176,72,.45),transparent 65%);
  top:-140px;right:-100px;animation:float1 14s ease-in-out infinite}
.hero-bg .b2{width:460px;height:460px;background:radial-gradient(circle,rgba(60,110,190,.4),transparent 65%);
  bottom:-160px;left:-120px;animation:float2 18s ease-in-out infinite}
[data-theme="light"] .hero-bg .blob{opacity:.35}
.hero-bg .grid{position:absolute;inset:0;
  background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000,transparent 75%);
  mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000,transparent 75%);opacity:.6}
@keyframes float1{0%,100%{transform:translate(0,0)}50%{transform:translate(-30px,40px)}}
@keyframes float2{0%,100%{transform:translate(0,0)}50%{transform:translate(40px,-30px)}}
@media (prefers-reduced-motion:reduce){.hero-bg .blob{animation:none}}
.hero-inner{position:relative;z-index:1;max-width:var(--maxw);margin:0 auto}
.hero h1{font-size:clamp(2.4rem,6vw,4.6rem);max-width:16ch;margin-bottom:1.6rem}
.hero-rotate{font-family:"Space Grotesk",sans-serif;font-size:clamp(1.1rem,2.4vw,1.5rem);
  font-weight:600;margin-bottom:1.4rem;color:var(--text)}
.rotator{color:var(--accent);border-bottom:2px solid var(--accent-soft);
  transition:opacity .35s ease;display:inline-block;min-width:1ch}
.rotator.fade{opacity:0}
.lede{font-size:1.14rem;color:var(--text-muted);max-width:40em;margin-bottom:2.2rem}
.hero-cta{display:flex;flex-wrap:wrap;gap:.9rem;align-items:center;margin-bottom:3.4rem}
.btn{font-weight:600;font-size:.96rem;padding:.85rem 1.5rem;border-radius:12px;cursor:pointer;
  transition:.22s;display:inline-flex;align-items:center;gap:.4rem;border:1px solid transparent}
.btn-primary{background:var(--accent);color:var(--accent-contrast);box-shadow:0 10px 30px -12px var(--accent)}
.btn-primary:hover{background:var(--accent-strong);transform:translateY(-2px)}
.btn-ghost{border-color:var(--border-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-text{color:var(--text-muted);padding-left:.4rem}
.btn-text:hover{color:var(--accent)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;
  padding-top:2.4rem;border-top:1px solid var(--border);max-width:820px}
.stats dt{font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:clamp(1.9rem,4vw,2.7rem);
  color:var(--text);line-height:1}
.stats dd{color:var(--text-muted);font-size:.86rem;margin-top:.4rem;line-height:1.35}

/* STORY */
.story-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:start}
.story-lead p{margin-bottom:1.2rem;color:var(--text-muted)}
.story-lead p:first-child{color:var(--text);font-size:1.12rem}
.story-close{border-left:2px solid var(--accent);padding-left:1.1rem;font-style:italic;color:var(--text)!important}
.learned{list-style:none;display:flex;flex-direction:column;gap:.1rem;
  background:var(--glass);border:1px solid var(--border);border-radius:var(--r);
  padding:1.4rem 1.6rem;backdrop-filter:blur(8px)}
.learned li{font-family:"IBM Plex Mono",monospace;font-size:.9rem;color:var(--text);
  padding:.55rem 0;border-bottom:1px dashed var(--border);position:relative;padding-left:1.5rem}
.learned li:last-child{border-bottom:none}
.learned li::before{content:"";position:absolute;left:0;top:calc(50% - 4px);width:8px;height:8px;
  background:var(--accent);border-radius:2px}
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem 2rem;margin-top:3rem;
  padding-top:2.4rem;border-top:1px solid var(--border)}
.facts dt{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);margin-bottom:.35rem}
.facts dd{color:var(--text);font-size:.96rem;line-height:1.4}

/* EXPERTISE */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:1.4rem}
.card{background:var(--glass);border:1px solid var(--border);border-radius:var(--r);
  padding:2rem 1.9rem;backdrop-filter:blur(8px);position:relative;overflow:hidden;
  transition:transform .28s,border-color .28s,box-shadow .28s}
.card::after{content:"";position:absolute;inset:0;border-radius:var(--r);pointer-events:none;
  background:radial-gradient(400px circle at var(--mx,50%) var(--my,0%),var(--accent-soft),transparent 60%);
  opacity:0;transition:opacity .3s}
.card:hover{transform:translateY(-5px);border-color:var(--accent);box-shadow:var(--shadow)}
.card:hover::after{opacity:1}
.card-tag{font-family:"IBM Plex Mono",monospace;font-size:.74rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--accent)}
.card h3{font-size:1.28rem;margin:.9rem 0 .8rem}
.card p{color:var(--text-muted);font-size:.98rem;margin-bottom:1.3rem}
.skill-tags{list-style:none;display:flex;flex-wrap:wrap;gap:.5rem}
.skill-tags li{font-family:"IBM Plex Mono",monospace;font-size:.74rem;padding:.32rem .7rem;
  border-radius:7px;background:var(--accent-soft);color:var(--accent)}

/* BANNER */
.banner{position:relative;height:360px;overflow:hidden}
.banner img{width:100%;height:100%;object-fit:cover;object-position:center 28%}
.banner-overlay{position:absolute;inset:0;display:flex;align-items:center;
  background:linear-gradient(90deg,var(--bg) 6%,rgba(10,17,32,.6) 55%,rgba(10,17,32,.25))}
[data-theme="light"] .banner-overlay{background:linear-gradient(90deg,rgba(8,14,26,.86) 10%,rgba(8,14,26,.55) 60%,rgba(8,14,26,.3))}
.banner-overlay blockquote{max-width:700px;margin:0 auto;width:100%;padding:0 1.5rem;
  font-family:"Space Grotesk",sans-serif;font-size:clamp(1.2rem,2.5vw,1.75rem);font-weight:500;
  line-height:1.35;color:#F4F7FC}
.banner-overlay blockquote::before{content:"";display:block;width:46px;height:3px;background:var(--accent);margin-bottom:1.2rem}

/* WORK */
.work-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.work-card{background:var(--glass);border:1px solid var(--border);border-radius:var(--r);
  padding:1.8rem 1.7rem;backdrop-filter:blur(8px);
  transition:transform .28s,border-color .28s,box-shadow .28s}
.work-card:hover{transform:translateY(-5px);border-color:var(--accent);box-shadow:var(--shadow)}
.work-track{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--accent);margin-bottom:.8rem}
.work-card h3{font-size:1.12rem;margin-bottom:.7rem;line-height:1.25}
.work-card p{color:var(--text-muted);font-size:.93rem;margin-bottom:1.2rem}

/* CERTIFICATIONS */
.cert-group-title{margin:0 0 1.3rem}
.cert-group-title:not(:first-of-type){margin-top:2.6rem}
.badge{display:inline-flex;align-items:center;gap:.5rem;font-family:"IBM Plex Mono",monospace;
  font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;padding:.4rem .9rem;border-radius:999px}
.badge::before{content:"";width:8px;height:8px;border-radius:50%}
.badge-cert{background:var(--accent-soft);color:var(--accent);border:1px solid var(--accent)}
.badge-cert::before{background:var(--accent)}
.badge-train{background:var(--bg-surface);color:var(--text-muted);border:1px solid var(--border-strong)}
.badge-train::before{background:var(--text-muted)}
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.cert-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--r);
  overflow:hidden;cursor:pointer;text-align:left;padding:0;color:inherit;font:inherit;
  transition:transform .25s,border-color .25s,box-shadow .25s}
.cert-card:hover{transform:translateY(-5px);border-color:var(--accent);box-shadow:var(--shadow)}
.cert-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border-bottom:1px solid var(--border);background:#fff}
.cert-meta{padding:1.1rem 1.2rem;display:flex;flex-direction:column;gap:.25rem}
.cert-meta strong{font-size:.98rem;font-weight:600;line-height:1.25}
.cert-meta span{font-family:"IBM Plex Mono",monospace;font-size:.76rem;color:var(--text-muted)}

/* CONTACT */
.contact{text-align:center}
.contact-inner{max-width:780px;margin:0 auto}
.contact .eyebrow{margin-bottom:1rem}
.contact h2{font-size:clamp(2.6rem,7vw,4.4rem);margin-bottom:1.3rem}
.contact-lede{color:var(--text-muted);font-size:1.1rem;max-width:40em;margin:0 auto 2.8rem}
.contact-links{display:grid;grid-template-columns:1fr 1fr;gap:1rem;text-align:left}
.contact-link{background:var(--glass);border:1px solid var(--border);border-radius:12px;
  padding:1.1rem 1.4rem;display:flex;flex-direction:column;gap:.2rem;backdrop-filter:blur(8px);
  transition:border-color .2s,transform .2s}
.contact-link:hover{border-color:var(--accent);transform:translateY(-3px)}
.cl-label{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent)}
.cl-value{color:var(--text);font-size:1rem;word-break:break-all}

/* FOOTER */
.footer{border-top:1px solid var(--border);background:var(--bg-2)}
.footer-inner{max-width:var(--maxw);margin:0 auto;padding:2rem 1.5rem;
  display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.footer-inner p{color:var(--text-muted);font-family:"IBM Plex Mono",monospace;font-size:.82rem}
.to-top{font-family:"IBM Plex Mono",monospace;font-size:.82rem;color:var(--text-muted)}
.to-top:hover{color:var(--accent)}

/* LIGHTBOX */
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(5,9,16,.92);
  display:flex;align-items:center;justify-content:center;padding:2rem;backdrop-filter:blur(6px)}
.lightbox[hidden]{display:none}
.lightbox figure{max-width:900px;width:100%;text-align:center}
.lightbox img{width:100%;border-radius:12px;border:1px solid var(--border-strong);box-shadow:0 30px 80px -20px rgba(0,0,0,.7)}
.lightbox figcaption{margin-top:1rem;color:#EAEEF6;font-family:"IBM Plex Mono",monospace;font-size:.85rem}
.lightbox-close{position:absolute;top:1.3rem;right:1.6rem;width:44px;height:44px;border-radius:50%;
  border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.06);color:#fff;font-size:1.6rem;
  line-height:1;cursor:pointer;transition:.2s}
.lightbox-close:hover{background:var(--accent);color:var(--accent-contrast);border-color:var(--accent)}

/* REVEAL */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

/* RESPONSIVE */
@media (max-width:900px){
  .nav-links{display:none}.menu-btn{display:flex}
  .story-grid{grid-template-columns:1fr;gap:2rem}
  .cards,.work-grid,.cert-grid{grid-template-columns:1fr 1fr}
  .facts{grid-template-columns:1fr 1fr}
  .section{padding:4.8rem 1.5rem}.hero{padding:4.5rem 1.5rem 3.5rem}
}
@media (max-width:600px){
  body{font-size:16px}
  .stats{grid-template-columns:1fr 1fr;gap:1.2rem}
  .cards,.work-grid,.cert-grid,.contact-links,.facts{grid-template-columns:1fr}
  .banner{height:300px}
  .banner-overlay{background:linear-gradient(180deg,rgba(10,17,32,.5),rgba(10,17,32,.78))}
  .footer-inner{justify-content:center;text-align:center}
}