/* ============================================
   ChangelessSaaS — Premium Section System
   v2.0 — Full-width rhythm, adjacent blocks,
   consistent inner containers, industry-ready.
   ============================================ */

/* === Section Rhythm ===
   Every section is full-width. Inner container
   max-width: 1200px for content readability.
   Adjacent sections alternate backgrounds
   (white → light gray → white) for separation.
*/

.cs-section{width:100%;padding:80px 0}
.cs-section:nth-child(even){background:#F8FAFC}

.cs-sec-inner{max-width:1200px;margin:0 auto;padding:0 24px}
.cs-sec-inner.narrow{max-width:800px}

/* === Hero (full-bleed gradient + large text) === */
.cs-hero{
  width:100%;
  min-height:520px;
  height:520px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--cs-pd),var(--cs-p));
  background-size:cover;background-position:center;
  color:#fff;text-align:center;padding:100px 24px;
  position:relative;overflow:hidden;
}
.cs-hero::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse at 20% 50%,rgba(255,255,255,0.08),transparent 60%),
             radial-gradient(ellipse at 80% 20%,rgba(255,255,255,0.05),transparent 40%);
}
.cs-hero .cs-hero-inner{max-width:800px;position:relative;z-index:2}
.cs-hero h1{font-size:clamp(32px,5vw,56px);font-weight:800;letter-spacing:-1px;line-height:1.15;margin-bottom:20px}
.cs-hero p{font-size:clamp(16px,2vw,20px);opacity:.88;line-height:1.6;margin-bottom:36px;max-width:600px;margin-left:auto;margin-right:auto}
.cs-hero a.cs-hero-cta{
  display:inline-block;padding:16px 40px;
  background:#fff;color:var(--cs-pd);border-radius:10px;
  font-size:16px;font-weight:700;text-decoration:none;
  box-shadow:0 8px 30px rgba(0,0,0,0.15);
  transition:all .25s cubic-bezier(.16,1,.3,1);
}
.cs-hero a.cs-hero-cta:hover{transform:translateY(-2px);box-shadow:0 12px 40px rgba(0,0,0,0.25)}

/* === Section Title (shared) === */
.cs-sec-title{text-align:center;margin-bottom:56px}
.cs-sec-title h2{font-size:clamp(24px,3.5vw,36px);font-weight:800;color:#0F172A;margin-bottom:12px;letter-spacing:-0.5px}
.cs-sec-title p{font-size:16px;color:#64748B;max-width:560px;margin:0 auto}

/* === Features Grid (3-4 col cards) === */
.cs-features{background:#fff}
.cs-features-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;
}
.cs-feature-card{
  background:#fff;border:1px solid #E2E8F0;border-radius:16px;
  padding:36px 28px;text-align:center;
  transition:all .3s cubic-bezier(.16,1,.3,1);
}
.cs-feature-card:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 40px rgba(0,0,0,0.06);
  border-color:var(--cs-p);
}
.cs-feature-card .cs-feature-icon{font-size:40px;margin-bottom:16px;display:block}
.cs-feature-card h3{font-size:17px;font-weight:700;color:#0F172A;margin-bottom:8px}
.cs-feature-card p{font-size:14px;color:#64748B;line-height:1.7}

/* === Image + Text Split (alternating) === */
.cs-split{display:flex;align-items:center;gap:64px;flex-wrap:wrap}
.cs-split.reverse{flex-direction:row-reverse}
.cs-split .cs-split-img{flex:1 1 400px;border-radius:16px;overflow:hidden;background:#E2E8F0;min-height:320px}
.cs-split .cs-split-img img{width:100%;height:100%;object-fit:cover}
.cs-split .cs-split-text{flex:1 1 360px}
.cs-split .cs-split-text h3{font-size:28px;font-weight:800;color:#0F172A;margin-bottom:16px;letter-spacing:-0.5px}
.cs-split .cs-split-text p{font-size:16px;color:#64748B;line-height:1.8;margin-bottom:24px}

/* === Stats Counter (full-width dark bar) === */
.cs-stats{
  width:100%;background:var(--cs-pd);color:#fff;
  padding:80px 0;text-align:center;
}
.cs-stats-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:32px;
  max-width:900px;margin:0 auto;padding:0 24px;
}
.cs-stat-item{text-align:center}
.cs-stat-num{display:block;font-size:clamp(32px,5vw,48px);font-weight:800;line-height:1;margin-bottom:8px;background:linear-gradient(135deg,#fff,var(--cs-accent,#0EA5E9));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.cs-stat-lbl{display:block;font-size:14px;opacity:.75;font-weight:500}

/* === Gallery Grid (for tourism, creative) === */
.cs-gallery-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;
}
.cs-gallery-item{border-radius:12px;overflow:hidden;aspect-ratio:4/3;background:#E2E8F0;position:relative}
.cs-gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.cs-gallery-item:hover img{transform:scale(1.05)}
.cs-gallery-item .cs-gallery-overlay{
  position:absolute;inset:0;background:linear-gradient(transparent 50%,rgba(0,0,0,0.5));
  display:flex;align-items:flex-end;padding:20px;color:#fff;font-size:14px;font-weight:600;
  opacity:0;transition:opacity .3s;
}
.cs-gallery-item:hover .cs-gallery-overlay{opacity:1}

/* === CTA Banner === */
.cs-cta{
  width:100%;padding:100px 24px;text-align:center;
  background:linear-gradient(135deg,var(--cs-p),var(--cs-pd));
  color:#fff;position:relative;overflow:hidden;
}
.cs-cta::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 30% 60%,rgba(255,255,255,0.1),transparent 50%);
}
.cs-cta .cs-cta-inner{max-width:650px;margin:0 auto;position:relative;z-index:2}
.cs-cta h2{font-size:clamp(24px,3.5vw,36px);font-weight:800;margin-bottom:16px}
.cs-cta p{font-size:16px;opacity:.85;margin-bottom:32px}
.cs-cta a.cs-cta-btn{
  display:inline-block;padding:16px 48px;
  background:#fff;color:var(--cs-pd);border-radius:10px;
  font-size:16px;font-weight:700;text-decoration:none;
  box-shadow:0 8px 30px rgba(0,0,0,0.2);
  transition:all .25s cubic-bezier(.16,1,.3,1);
}
.cs-cta a.cs-cta-btn:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(0,0,0,0.3)}

/* === Contact Form Section === */
.cs-contact-form{max-width:640px;margin:0 auto}
.cs-contact-form input,.cs-contact-form textarea{
  width:100%;padding:12px 16px;border:1.5px solid #E2E8F0;
  border-radius:10px;font-size:15px;margin-bottom:16px;
  transition:border-color .2s;font-family:inherit;
}
.cs-contact-form input:focus,.cs-contact-form textarea:focus{
  outline:none;border-color:var(--cs-p);box-shadow:0 0 0 3px rgba(37,99,235,0.08)
}
.cs-contact-form textarea{min-height:120px;resize:vertical}
.cs-contact-form button{
  width:100%;padding:14px;background:var(--cs-p);color:#fff;
  border:none;border-radius:10px;font-size:16px;font-weight:600;
  cursor:pointer;transition:all .2s;
}
.cs-contact-form button:hover{background:var(--cs-pd);transform:translateY(-1px)}

/* === Responsive === */
@media(max-width:768px){
  .cs-section{padding:56px 0}
  .cs-hero{min-height:400px;padding:80px 20px}
  .cs-hero h1{font-size:30px}
  .cs-split{gap:32px;flex-direction:column}
  .cs-split.reverse{flex-direction:column}
  .cs-split .cs-split-img{min-height:240px;width:100%}
  .cs-sec-title{margin-bottom:40px}
  .cs-features-grid{grid-template-columns:1fr}
  .cs-stats-grid{grid-template-columns:repeat(2,1fr);gap:24px}
}

/* === Split Image-Text CTA === */
.cs-split-cta{display:inline-block;margin-top:8px;padding:10px 24px;background:var(--cs-p);color:#fff;border-radius:8px;font-size:14px;font-weight:600;text-decoration:none;transition:all .2s}
.cs-split-cta:hover{background:var(--cs-pd);transform:translateY(-1px)}
.cs-split-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:64px;opacity:.2;background:#F1F5F9;border-radius:12px}

/* === Testimonials Grid === */
.cs-testimonials-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.cs-testimonial-card{background:#fff;border:1px solid #E2E8F0;border-radius:14px;padding:28px;position:relative}
.cs-testimonial-card::before{content:'"';position:absolute;top:10px;left:16px;font-size:48px;color:var(--cs-p);opacity:.1;font-family:Georgia,serif;line-height:1}
.cs-testimonial-avatar{font-size:40px;margin-bottom:12px}
.cs-testimonial-text{font-size:14px;color:#475569;line-height:1.8;margin-bottom:16px;font-style:italic}
.cs-testimonial-author strong{display:block;font-size:14px;color:#0F172A}
.cs-testimonial-author span{font-size:12px;color:#94A3B8}
.cs-stars{margin-top:8px;font-size:14px}

/* === FAQ Accordion === */
.cs-faq-list{display:flex;flex-direction:column;gap:12px}
.cs-faq-item{border:1px solid #E2E8F0;border-radius:12px;overflow:hidden;background:#fff;transition:all .2s}
.cs-faq-item[open]{border-color:var(--cs-p);box-shadow:0 4px 16px rgba(0,0,0,0.04)}
.cs-faq-item summary{padding:16px 20px;font-weight:600;font-size:15px;color:#0F172A;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.cs-faq-item summary::after{content:'+';font-size:20px;color:var(--cs-p);transition:transform .3s}
.cs-faq-item[open] summary::after{content:'−';transform:rotate(180deg)}
.cs-faq-item p{padding:0 20px 20px;font-size:14px;color:#64748B;line-height:1.8}

/* === Hero Carousel === */
.cs-carousel{width:100%;height:580px;position:relative;overflow:hidden}
.cs-carousel-track{width:100%;height:100%;position:relative}
.cs-carousel-slide{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .8s ease;background-size:cover!important;background-position:center!important}
.cs-carousel-slide.active{opacity:1}
.cs-carousel-inner{max-width:800px;text-align:center;padding:0 24px}
.cs-carousel-inner h1{font-size:clamp(30px,5vw,52px);font-weight:900;color:#fff;line-height:1.15;margin-bottom:16px;text-shadow:0 2px 8px rgba(0,0,0,.3)}
.cs-carousel-inner p{font-size:clamp(14px,1.8vw,18px);color:rgba(255,255,255,.88);margin-bottom:28px}
.cs-carousel-cta{display:inline-block;padding:14px 36px;background:#fff;color:var(--cs-p,#2563EB);border-radius:10px;font-weight:700;text-decoration:none;font-size:15px;transition:all .25s}
.cs-carousel-cta:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.2)}
.cs-carousel-dots{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5}
.cscd{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.3);border:none;cursor:pointer;transition:all .3s}
.cscd.active{background:#fff;transform:scale(1.3)}
.cs-carousel-arrows{position:absolute;top:50%;transform:translateY(-50%);width:100%;display:flex;justify-content:space-between;padding:0 20px;z-index:5;pointer-events:none}
.cs-carousel-arrows button{pointer-events:all;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.15);border:none;color:#fff;font-size:20px;cursor:pointer;transition:all .2s}
.cs-carousel-arrows button:hover{background:rgba(255,255,255,.3)}
@media(max-width:768px){.cs-carousel{height:440px}}