/* ===== EMAIL INFRASTRUCTURE PAGE ===== */

/* --- Hero --- */
.ei-hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;padding-top:100px;padding-bottom:60px}
.ei-hero::before{content:'';position:absolute;inset:0;background:
  radial-gradient(ellipse 900px 700px at 20% 40%,rgba(99,102,241,.10),transparent),
  radial-gradient(ellipse 700px 500px at 80% 60%,rgba(129,140,248,.07),transparent),
  radial-gradient(ellipse 500px 400px at 60% 20%,rgba(245,158,11,.04),transparent);pointer-events:none;z-index:0}

/* Animated gradient orbs */
.ei-hero-orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.18;pointer-events:none;z-index:0}
.ei-hero-orb--1{width:600px;height:600px;background:var(--accent);top:-200px;left:-150px;animation:ei-float 8s ease-in-out infinite}
.ei-hero-orb--2{width:500px;height:500px;background:var(--accent-glow);bottom:-150px;right:-100px;animation:ei-float 10s ease-in-out infinite reverse}
.ei-hero-orb--3{width:350px;height:350px;background:var(--accent-warm);top:30%;right:20%;animation:ei-float 12s ease-in-out infinite 2s}
@keyframes ei-float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(30px,-30px) scale(1.08)}}

/* Network canvas */
.ei-network-canvas{position:absolute;inset:0;z-index:0;pointer-events:none}

.ei-hero .container{position:relative;z-index:2}
.ei-hero-content{max-width:820px;margin:0 auto;text-align:center}
.ei-hero-badge{display:inline-flex;align-items:center;gap:10px;padding:10px 22px;border-radius:var(--radius-full);background:rgba(99,102,241,.08);border:1px solid rgba(99,102,241,.2);font-size:.82rem;font-weight:600;color:var(--accent-glow);margin-bottom:28px;backdrop-filter:blur(8px)}
.ei-hero-badge i{font-size:1rem}
.ei-hero h1{font-size:clamp(2.4rem,5.5vw,3.8rem);font-weight:800;color:var(--text-primary);line-height:1.08;margin-bottom:20px;letter-spacing:-.8px}
.ei-hero h1 .gradient-text{background:linear-gradient(135deg,var(--accent),var(--accent-glow),#a78bfa,var(--accent-warm));background-size:200% auto;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:ei-gradient-shift 4s ease infinite}
@keyframes ei-gradient-shift{0%,100%{background-position:0% center}50%{background-position:100% center}}
.ei-hero-subtitle{font-size:clamp(1rem,2vw,1.2rem);color:var(--text-secondary);max-width:680px;margin:0 auto 36px;line-height:1.8}
.ei-hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* --- Stats --- */
.ei-stats{padding:80px 0;background:var(--bg-secondary);position:relative;overflow:hidden}
.ei-stats::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--accent),transparent)}
.ei-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;max-width:960px;margin:0 auto}
.ei-stat-card{text-align:center;padding:36px 20px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-primary);transition:all var(--transition);position:relative;overflow:hidden}
.ei-stat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent-glow));transform:scaleX(0);transition:transform .4s ease}
.ei-stat-card:hover::before{transform:scaleX(1)}
.ei-stat-card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:0 16px 40px rgba(0,0,0,.15)}
.ei-stat-number{font-size:2.6rem;font-weight:800;color:var(--accent);font-family:var(--font-mono);line-height:1;margin-bottom:6px}
.ei-stat-label{font-size:.82rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1.5px;font-weight:600}

/* --- Professional Overview --- */
.ei-overview{padding:100px 0}
.ei-overview-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.ei-overview-visual{position:relative;display:flex;align-items:center;justify-content:center}
.ei-overview-icon-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.ei-ov-icon{width:90px;height:90px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-secondary);display:flex;align-items:center;justify-content:center;font-size:2rem;color:var(--accent);transition:all var(--transition)}
.ei-ov-icon:hover{border-color:var(--accent);transform:translateY(-4px) scale(1.05);box-shadow:0 12px 30px rgba(99,102,241,.15);background:rgba(99,102,241,.08)}
.ei-ov-icon:nth-child(2){animation-delay:.1s}
.ei-ov-icon:nth-child(3){animation-delay:.2s}
.ei-ov-icon:nth-child(4){animation-delay:.3s}
.ei-ov-icon:nth-child(5){animation-delay:.4s}
.ei-ov-icon:nth-child(6){animation-delay:.5s}

/* --- Core Expertise --- */
.ei-expertise{padding:100px 0;background:var(--bg-secondary)}
.ei-expertise-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.ei-expertise-card{padding:28px 24px;border-radius:var(--radius);background:var(--bg-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border);transition:all .4s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}
.ei-expertise-card::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(99,102,241,.06),transparent);opacity:0;transition:opacity .4s ease;z-index:0}
.ei-expertise-card:hover{border-color:var(--accent);transform:translateY(-6px);box-shadow:0 20px 50px rgba(0,0,0,.18)}
.ei-expertise-card:hover::after{opacity:1}
.ei-expertise-card:hover .ei-expertise-icon{background:var(--accent);color:#fff;transform:scale(1.08)}
.ei-expertise-icon{width:52px;height:52px;border-radius:14px;background:rgba(99,102,241,.1);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:18px;transition:all var(--transition);position:relative;z-index:1}
.ei-expertise-title{font-size:1.08rem;font-weight:700;color:var(--text-primary);margin-bottom:14px;position:relative;z-index:1}
.ei-expertise-list{list-style:none;padding:0;margin:0;position:relative;z-index:1}
.ei-expertise-list li{position:relative;padding-left:18px;margin-bottom:6px;font-size:.84rem;color:var(--text-secondary);line-height:1.6}
.ei-expertise-list li::before{content:'▸';position:absolute;left:0;color:var(--accent);font-weight:700}

/* --- Timeline --- */
.ei-timeline-section{padding:100px 0}
.ei-timeline{position:relative;max-width:900px;margin:50px auto 0}
.ei-timeline::before{content:'';position:absolute;left:50%;top:0;bottom:0;width:3px;background:linear-gradient(to bottom,var(--accent),var(--accent-glow),var(--accent-warm),var(--accent));border-radius:2px;transform:translateX(-50%)}
.ei-timeline-item{position:relative;width:50%;padding:0 40px 60px}
.ei-timeline-item:nth-child(odd){left:0;text-align:right;padding-right:60px;padding-left:0}
.ei-timeline-item:nth-child(even){left:50%;text-align:left;padding-left:60px;padding-right:0}
.ei-timeline-dot{position:absolute;top:4px;width:18px;height:18px;border-radius:50%;background:var(--accent);border:4px solid var(--bg-primary);z-index:2;transition:all var(--transition);box-shadow:0 0 0 4px rgba(99,102,241,.2)}
.ei-timeline-item:nth-child(odd) .ei-timeline-dot{right:-9px}
.ei-timeline-item:nth-child(even) .ei-timeline-dot{left:-9px}
.ei-timeline-item:hover .ei-timeline-dot{transform:scale(1.3);box-shadow:0 0 0 8px rgba(99,102,241,.25)}
.ei-timeline-step{display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:var(--radius-full);background:rgba(99,102,241,.1);border:1px solid rgba(99,102,241,.2);font-size:.72rem;font-weight:700;color:var(--accent-glow);text-transform:uppercase;letter-spacing:1.5px;margin-bottom:10px}
.ei-timeline-title{font-size:1.12rem;font-weight:700;color:var(--text-primary);margin-bottom:10px}
.ei-timeline-list{list-style:none;padding:0;margin:0}
.ei-timeline-list li{font-size:.84rem;color:var(--text-secondary);line-height:1.7;margin-bottom:4px;display:flex;align-items:center;gap:8px}
.ei-timeline-item:nth-child(odd) .ei-timeline-list li{justify-content:flex-end}
.ei-timeline-list li::before{content:'';width:5px;height:5px;border-radius:50%;background:var(--accent);flex-shrink:0}
.ei-timeline-item:nth-child(odd) .ei-timeline-list li::before{order:1}
.ei-timeline-card{padding:24px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-secondary);transition:all var(--transition)}
.ei-timeline-item:hover .ei-timeline-card{border-color:var(--accent);box-shadow:0 12px 30px rgba(0,0,0,.12)}

/* --- Featured Services --- */
.ei-services{padding:100px 0;background:var(--bg-secondary)}
.ei-services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ei-service-card{padding:36px 28px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-primary);transition:all .4s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}
.ei-service-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent-warm));opacity:0;transition:opacity var(--transition)}
.ei-service-card:hover::before{opacity:1}
.ei-service-card:hover{border-color:var(--accent);transform:translateY(-6px);box-shadow:0 20px 50px rgba(0,0,0,.18)}
.ei-service-card:hover .ei-service-icon{background:var(--accent);color:#fff;transform:scale(1.08)}
.ei-service-icon{width:56px;height:56px;border-radius:14px;background:rgba(99,102,241,.1);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:20px;transition:all var(--transition)}
.ei-service-title{font-size:1.15rem;font-weight:700;color:var(--text-primary);margin-bottom:10px}
.ei-service-desc{font-size:.9rem;color:var(--text-secondary);line-height:1.75}

/* --- What I Deliver --- */
.ei-deliver{padding:100px 0}
.ei-deliver-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.ei-deliver-item{display:flex;align-items:center;gap:14px;padding:18px 22px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-secondary);transition:all var(--transition)}
.ei-deliver-item:hover{border-color:var(--accent);transform:translateX(6px);background:rgba(99,102,241,.04)}
.ei-deliver-check{width:28px;height:28px;border-radius:8px;background:rgba(34,197,94,.1);color:#22c55e;display:flex;align-items:center;justify-content:center;font-size:.85rem;flex-shrink:0;border:1px solid rgba(34,197,94,.2)}
.ei-deliver-text{font-size:.9rem;font-weight:600;color:var(--text-primary)}

/* --- Tech Stack --- */
.ei-tech{padding:100px 0;background:var(--bg-secondary)}
.ei-tech-badges{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;max-width:800px;margin:0 auto}
.ei-tech-badge{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:var(--radius-full);border:1px solid var(--border);background:var(--bg-primary);font-size:.88rem;font-weight:600;color:var(--text-primary);transition:all var(--transition);cursor:default}
.ei-tech-badge i{color:var(--accent);font-size:1rem}
.ei-tech-badge:hover{border-color:var(--accent);background:rgba(99,102,241,.08);transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.1)}

/* --- Final CTA --- */
.ei-cta{padding:120px 0;position:relative;overflow:hidden;text-align:center}
.ei-cta::before{content:'';position:absolute;inset:0;background:
  radial-gradient(ellipse 800px 500px at 50% 50%,rgba(99,102,241,.08),transparent);pointer-events:none}
.ei-cta .container{position:relative;z-index:1}
.ei-cta-inner{max-width:700px;margin:0 auto}
.ei-cta-label{display:inline-flex;align-items:center;gap:8px;padding:8px 20px;border-radius:var(--radius-full);background:rgba(99,102,241,.08);border:1px solid rgba(99,102,241,.2);font-size:.78rem;font-weight:600;color:var(--accent-glow);margin-bottom:24px}
.ei-cta h2{font-size:clamp(2rem,4.5vw,3rem);font-weight:800;color:var(--text-primary);margin-bottom:18px;letter-spacing:-.5px}
.ei-cta-desc{font-size:1.05rem;color:var(--text-secondary);max-width:560px;margin:0 auto 36px;line-height:1.8}
.ei-cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* --- Centered Header Utility --- */
.ei-section-header{text-align:center;margin-bottom:56px}
.ei-section-header .section-subtitle{margin:0 auto}

/* --- FAQ --- */
.ei-faq-item{border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-primary);margin-bottom:12px;overflow:hidden;transition:all var(--transition)}
.ei-faq-item:hover{border-color:var(--accent)}
.ei-faq-item[open]{border-color:var(--accent);box-shadow:0 8px 24px rgba(99,102,241,.08)}
.ei-faq-question{padding:20px 24px;font-size:1rem;font-weight:600;color:var(--text-primary);cursor:pointer;display:flex;align-items:center;list-style:none;transition:all var(--transition)}
.ei-faq-question::-webkit-details-marker{display:none}
.ei-faq-question::after{content:'+';margin-left:auto;font-size:1.4rem;font-weight:300;color:var(--accent);transition:transform .3s ease;flex-shrink:0;width:28px;text-align:center}
.ei-faq-item[open] .ei-faq-question::after{content:'−'}
.ei-faq-answer{padding:0 24px 20px;font-size:.92rem;color:var(--text-secondary);line-height:1.8;border-top:1px solid var(--border)}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .ei-expertise-grid{grid-template-columns:repeat(2,1fr)}
  .ei-services-grid{grid-template-columns:repeat(2,1fr)}
  .ei-deliver-grid{grid-template-columns:repeat(2,1fr)}
  .ei-stats-grid{grid-template-columns:repeat(2,1fr)}
  .ei-overview-inner{grid-template-columns:1fr;text-align:center}
  .ei-overview-visual{order:-1;margin-bottom:20px}
  .ei-overview-icon-grid{max-width:320px;margin:0 auto}
  .ei-timeline::before{left:20px}
  .ei-timeline-item{width:100%;left:0!important;text-align:left!important;padding-left:60px!important;padding-right:0!important}
  .ei-timeline-dot{left:11px!important;right:auto!important}
  .ei-timeline-list li{justify-content:flex-start!important}
  .ei-timeline-list li::before{order:0!important}
}
@media(max-width:768px){
  .ei-hero{padding-top:90px;padding-bottom:40px}
  .ei-expertise-grid{grid-template-columns:1fr}
  .ei-services-grid{grid-template-columns:1fr}
  .ei-deliver-grid{grid-template-columns:1fr}
  .ei-stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .ei-stats-grid{grid-template-columns:1fr}
  .ei-hero h1{font-size:1.9rem}
  .ei-hero-btns{flex-direction:column;align-items:center}
  .ei-cta-btns{flex-direction:column;align-items:center}
}