:root{--purple:#7c3aed;--purple-light:#a78bfa;--cyan:#06b6d4;--green:#10b981;}
*{margin:0;padding:0;box-sizing:border-box;}
body{min-height:100vh;}
.navbar{background:var(--clr-surface-elevated);border-bottom:1px solid var(--clr-border);backdrop-filter:blur(20px);padding:14px 0;position:sticky;top:0;z-index:100;}
.navbar-brand{font-weight:900;font-size:1.5rem;color:var(--clr-on-surface)!important;text-decoration:none;}
.navbar-brand span{color:var(--purple-light);}
.hero{position:relative;padding:100px 0 60px;overflow:hidden;text-align:center;}
.hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse 70% 60% at 50% 0%,rgba(124,58,237,0.12) 0%,transparent 70%);}
.blob{position:absolute;border-radius:50%;filter:blur(80px);animation:blobFloat 8s ease-in-out infinite;}
.blob-1{width:400px;height:400px;background:rgba(124,58,237,0.07);top:-100px;left:50%;transform:translateX(-50%);}
@keyframes blobFloat{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(-25px)}}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(124,58,237,0.12);border:1px solid rgba(124,58,237,0.3);color:var(--purple-light);padding:8px 20px;border-radius:50px;font-size:0.85rem;font-weight:700;margin-bottom:24px;}
.hero-title{font-size:clamp(2rem,5vw,3.2rem);font-weight:900;line-height:1.2;margin-bottom:20px;}
.hero-title .highlight{background:linear-gradient(135deg,var(--purple-light),var(--cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;}
.stats-row{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;margin-bottom:60px;}
.stat-box{background:var(--clr-card);border:1px solid var(--clr-border);border-radius:16px;padding:20px 28px;text-align:center;}
.stat-num{font-size:2rem;font-weight:900;color:var(--purple-light);}
.stat-label{font-size:0.8rem;color:var(--clr-muted);}

/* Filter */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:40px;}
.filter-btn{background:transparent;border:1px solid var(--clr-border);color:var(--clr-muted);padding:8px 20px;border-radius:50px;font-family:'Cairo',sans-serif;font-size:0.85rem;cursor:pointer;transition:all 0.3s;}
.filter-btn.active,.filter-btn:hover{background:rgba(124,58,237,0.15);border-color:rgba(124,58,237,0.4);color:var(--purple-light);}

/* Case Study Card */
.cs-card{background:var(--clr-card);border:1px solid var(--clr-border);border-radius:20px;overflow:hidden;transition:all 0.3s;}
.cs-card:hover{border-color:rgba(124,58,237,0.4);transform:translateY(-4px);box-shadow:0 20px 40px rgba(124,58,237,0.1);}
.cs-header{padding:28px 28px 0;position:relative;}
.cs-sector{display:inline-flex;align-items:center;gap:6px;background:rgba(124,58,237,0.12);border:1px solid rgba(124,58,237,0.25);color:var(--purple-light);padding:4px 12px;border-radius:50px;font-size:0.75rem;font-weight:700;margin-bottom:16px;}
.cs-org{font-size:1.2rem;font-weight:800;margin-bottom:8px;}
.cs-challenge{font-size:0.85rem;color:var(--clr-muted);line-height:1.6;margin-bottom:20px;}
.cs-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:0 28px 20px;}
.cs-metric{background:var(--clr-white-hover);border:1px solid var(--clr-border);border-radius:12px;padding:14px;text-align:center;}
.cs-metric-num{font-size:1.5rem;font-weight:900;color:var(--green);}
.cs-metric-label{font-size:0.72rem;color:var(--clr-muted);margin-top:2px;}
.cs-quote{margin:0 28px 20px;background:rgba(124,58,237,0.06);border-right:3px solid var(--purple);padding:14px 16px;border-radius:0 10px 10px 0;}
.cs-quote p{font-size:0.85rem;color:var(--clr-text);line-height:1.7;font-style:italic;margin:0;}
.cs-author{display:flex;align-items:center;gap:12px;padding:16px 28px;border-top:1px solid var(--clr-border);}
.cs-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--purple),var(--cyan));display:flex;align-items:center;justify-content:center;font-weight:800;font-size:0.9rem;flex-shrink:0;color:#fff;}
.cs-author-info .name{font-weight:700;font-size:0.9rem;}
.cs-author-info .role{font-size:0.78rem;color:var(--clr-muted);}
.cs-link{display:flex;align-items:center;gap:6px;padding:12px 28px;color:var(--purple-light);font-size:0.85rem;font-weight:600;text-decoration:none;border-top:1px solid var(--clr-border);transition:all 0.2s;}
.cs-link:hover{color:var(--cyan);}

/* Featured Case Study */
.cs-featured{background:rgba(124,58,237,0.06);border:1px solid rgba(124,58,237,0.25);border-radius:24px;padding:40px;margin-bottom:40px;position:relative;overflow:hidden;}
.cs-featured::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--purple),var(--cyan));}
.cs-featured-badge{position:absolute;top:20px;left:20px;background:var(--purple);color:#fff;padding:4px 14px;border-radius:50px;font-size:0.75rem;font-weight:700;}

/* CTA */
.cta-section{background:rgba(124,58,237,0.06);border:1px solid rgba(124,58,237,0.2);border-radius:24px;padding:60px 40px;text-align:center;margin-top:80px;}
footer{background:var(--clr-white-hover);border-top:1px solid var(--clr-border);padding:40px 0 20px;margin-top:80px;}

/* ── Light Mode ── */
html[data-theme="light"] .cs-card { box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
html[data-theme="light"] .cs-card:hover { box-shadow: 0 12px 32px rgba(0,0,0,0.1); }
html[data-theme="light"] .stat-box { box-shadow: 0 1px 6px rgba(0,0,0,0.05); }
html[data-theme="light"] .cs-featured { background: rgba(124,58,237,0.04); box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
html[data-theme="light"] .cta-section { box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
html[data-theme="light"] .hero-bg { background: radial-gradient(ellipse 70% 60% at 50% 0%,rgba(124,58,237,0.06) 0%,transparent 70%); }