/* iSEOServices Case Studies Page CSS */

/* Hero */
.cs-hero{background:var(--grad-hero);padding:72px 0 60px;position:relative;overflow:hidden}
.cs-hero__orb1{position:absolute;top:-100px;right:-60px;width:500px;height:500px;background:radial-gradient(circle,rgba(0,194,168,.10) 0%,transparent 65%);pointer-events:none}
.cs-hero__orb2{position:absolute;bottom:-80px;left:-40px;width:380px;height:380px;background:radial-gradient(circle,rgba(232,93,4,.07) 0%,transparent 65%);pointer-events:none}
.cs-hero__inner{position:relative;z-index:2;text-align:center}
.cs-hero__eyebrow{color:var(--teal)}
.cs-hero__h1{color:#fff;font-size:clamp(2rem,4vw,3.2rem);margin:16px auto 18px;max-width:720px;line-height:1.12;letter-spacing:-.02em}
.cs-hero__h1 em{font-style:normal;color:var(--teal)}
.cs-hero__sub{color:rgba(255,255,255,.6);font-size:1rem;max-width:580px;margin:0 auto 36px;line-height:1.75}
.cs-hero__stats{display:inline-flex;align-items:center;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:var(--r-xl);padding:20px 32px;flex-wrap:wrap;justify-content:center;gap:0}
.cs-hero__stat{text-align:center}
.cs-hero__stat-num{font-family:var(--font-h);font-size:2rem;font-weight:700;color:var(--teal);line-height:1}
.cs-hero__stat-lbl{font-size:.72rem;color:rgba(255,255,255,.5);margin-top:4px;letter-spacing:.04em}
.cs-hero__div{width:1px;height:40px;background:rgba(255,255,255,.12);margin:0 28px}

/* Filter bar */
.cs-filter-bar{background:#fff;border-bottom:1px solid var(--pale);padding:16px 0;position:sticky;top:64px;z-index:10}
.cs-filter-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.cs-filter-label{font-size:.75rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-right:6px}
.cs-filter-btn{padding:6px 16px;border-radius:var(--r-full);font-size:.78rem;font-weight:700;cursor:pointer;border:1.5px solid var(--pale);background:#fff;color:var(--muted);font-family:var(--font-b);transition:all .2s}
.cs-filter-btn:hover{border-color:var(--teal);color:var(--teal)}
.cs-filter-active{background:var(--navy) !important;color:#fff !important;border-color:var(--navy) !important}

/* Grid */
.cs-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;align-items:start}

/* Card */
.cs-card{background:#fff;border:1.5px solid var(--pale);border-radius:var(--r-xl);overflow:hidden;transition:all .3s;display:flex;flex-direction:column;box-shadow:0 4px 6px rgba(13,31,92,.07),0 12px 32px rgba(13,31,92,.10),0 2px 4px rgba(0,0,0,.06),inset 0 1px 0 rgba(255,255,255,.8);align-self:start}
.cs-card:hover{border-color:var(--teal);box-shadow:0 8px 24px rgba(13,31,92,.12),0 28px 64px rgba(0,194,168,.16),0 2px 6px rgba(0,0,0,.08);transform:translateY(-4px)}
.cs-card.cs-hidden{display:none}

/* Card top bar */
.cs-card__top{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:var(--navy);border-radius:var(--r-xl) var(--r-xl) 0 0}
.cs-card__tag{display:inline-flex;align-items:center;gap:5px;background:rgba(0,194,168,.18);border:1px solid rgba(0,194,168,.40);border-radius:var(--r-full);padding:4px 12px;font-size:.65rem;font-weight:800;color:var(--teal);text-decoration:none;letter-spacing:.06em;text-transform:uppercase;transition:all .2s}
.cs-card__tag:hover{background:rgba(0,194,168,.18)}
.cs-card__dur{font-size:.73rem;color:rgba(255,255,255,.6);font-weight:600}

/* Card title area */
.cs-card__head{padding:14px 24px 16px;background:var(--navy)}
.cs-card__title{font-size:.98rem;font-weight:800;color:#fff;line-height:1.4;font-family:var(--font-b);margin-bottom:6px}
.cs-card__meta{display:flex;align-items:center;gap:6px;font-size:.75rem;color:rgba(255,255,255,.55)}
.cs-card__meta-sep{color:rgba(255,255,255,.2)}

/* Metrics row */
.cs-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--pale);margin:16px 0 0;border-top:1px solid var(--pale)}
.cs-metric-box{background:#fff;padding:14px 10px;text-align:center}
.cs-metric-box__val{font-family:var(--font-h);font-size:1.15rem;font-weight:700;color:var(--navy);line-height:1.1;margin-bottom:4px}
.cs-metric-box__lbl{font-size:.62rem;color:var(--muted);line-height:1.35}

/* Expandable details */
.cs-details{border-top:1px solid var(--pale)}
.cs-summary{padding:14px 24px;font-size:.8rem;font-weight:700;color:var(--teal);cursor:pointer;display:flex;align-items:center;gap:6px;user-select:none;transition:background .2s;background:none;border:none;width:100%;text-align:left;font-family:var(--font-b)}
.cs-summary:hover{background:rgba(0,194,168,.04)}
.cs-arrow{transition:transform .25s;flex-shrink:0}
.cs-details.cs-open .cs-arrow{transform:rotate(180deg)}
.cs-body{padding:0 24px 24px;display:none}
.cs-challenge-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px}
.cs-label{font-size:.7rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.cs-text{font-size:.8rem;color:var(--body);line-height:1.65;text-align:justify}
.cs-quote{background:var(--off);border-left:3px solid var(--teal);border-radius:0 var(--r-md) var(--r-md) 0;padding:16px 18px;margin:0}
.cs-quote__text{font-size:.8rem;font-style:italic;color:var(--body);line-height:1.7;margin-bottom:12px}
.cs-quote__author{display:flex;align-items:center;gap:10px}
.cs-quote__ava{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.72rem;color:#fff;flex-shrink:0}
.cs-quote__name{font-size:.78rem;font-weight:700;color:var(--navy)}
.cs-quote__role{font-size:.68rem;color:var(--muted)}
.cs-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:.8rem;font-weight:700;color:var(--teal);text-decoration:none;transition:gap .2s}
.cs-link:hover{gap:10px}

/* Trust strip */
.cs-trust{background:var(--off);border-top:1px solid var(--pale);padding:48px 0}
.cs-trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cs-trust-item{text-align:center}
.cs-trust-ic{font-size:28px;margin-bottom:10px}
.cs-trust-title{font-size:.88rem;font-weight:700;color:var(--navy);margin-bottom:6px;font-family:var(--font-b)}
.cs-trust-text{font-size:.76rem;color:var(--muted);line-height:1.55}

/* CTA */
.cs-cta{background:linear-gradient(135deg,#060f2e 0%,#0d1f5c 60%,#0e2570 100%);padding:72px 0;position:relative;overflow:hidden}
.cs-cta__orb{position:absolute;top:-100px;right:-60px;width:480px;height:480px;background:radial-gradient(circle,rgba(0,194,168,.12) 0%,transparent 65%);pointer-events:none}
.cs-cta__inner{position:relative;z-index:2;text-align:center}
.cs-cta__eyebrow{color:var(--teal);display:block;margin-bottom:16px}
.cs-cta__h2{color:#fff;font-size:clamp(1.9rem,3.5vw,2.8rem);margin-bottom:18px;max-width:640px;margin-left:auto;margin-right:auto;line-height:1.15}
.cs-cta__h2 em{font-style:normal;color:var(--teal)}
.cs-cta__p{color:rgba(255,255,255,.6);font-size:.98rem;max-width:520px;margin:0 auto 32px;line-height:1.72}
.cs-cta__btns{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap}

/* Responsive */
@media(max-width:900px){
  .cs-grid{grid-template-columns:1fr}
  .cs-hero__stats{gap:0}
}
@media(max-width:640px){
  .cs-trust-grid{grid-template-columns:repeat(2,1fr)}
  .cs-challenge-grid{grid-template-columns:1fr}
  .cs-hero{padding:44px 0 36px}
  .cs-hero__div{display:none}
  .cs-hero__stats{display:grid;grid-template-columns:1fr 1fr;gap:0;padding:0;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:var(--r-xl);overflow:hidden}
  .cs-hero__stat{padding:18px 12px;border-right:1px solid rgba(255,255,255,.10);border-bottom:1px solid rgba(255,255,255,.10)}
  .cs-hero__stat:nth-child(even){border-right:none}
  .cs-hero__stat:nth-last-child(-n+2){border-bottom:none}
  .cs-metrics{grid-template-columns:repeat(2,1fr)}
  .cs-cta{padding:48px 0}
  .cs-cta__btns{flex-direction:column}
  .cs-cta__btns .btn{width:100%;justify-content:center}
}
@media(max-width:640px){
  .cs-filter-bar{position:relative;top:auto}
}