/* CSS for: app-development */

/* ── RESET ── */
.ad*,.ad *::before,.ad *::after{box-sizing:border-box;margin:0;padding:0}
.ad{
  font-family:'Red Hat Text',sans-serif;
  color:#4d4d4d;line-height:1.7;font-size:16px;
  --n:#1b1464;--soft:#6b6480;--muted:#9490aa;--bdr:#e4e1f4;--bg:#f8f7fd;
}

/* ── INTRO ── */
.ad-intro{
  text-align:center;padding:56px 32px 48px;
  background:linear-gradient(155deg,#ede9ff 0%,#f9f8ff 55%,#fff 100%);
  border-radius:20px;margin-bottom:44px;
}
.ad-h1{font-size:clamp(2.2rem,5vw,3.2rem);font-weight:700;color:var(--n);letter-spacing:-.5px;line-height:1.15;margin-bottom:14px}
.ad-h1 em{font-style:normal;border-bottom:3px solid var(--n);padding-bottom:2px}
.ad-sub{max-width:580px;margin:0 auto;color:var(--soft);font-size:1.05rem}
.ad-stats{display:flex;justify-content:center;gap:44px;margin-top:34px;flex-wrap:wrap}
.ad-sn{display:block;font-size:2rem;font-weight:700;color:var(--n);line-height:1.1}
.ad-sl{font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:1px}

/* ── PLATFORM BADGES ── */
.ad-platforms{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:24px}
.ad-plat{display:inline-flex;align-items:center;gap:6px;background:#fff;border:1.5px solid var(--bdr);border-radius:50px;padding:7px 16px;font-size:.88rem;font-weight:600;color:var(--n)}
.ad-plat span{font-size:1.1rem}

/* ── RESPONSIVE GRID — 3 cols desktop, 1 col mobile ── */
.ad-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-bottom:52px;
}

/* ── CARD ── */
.ad-card{
  background:#fff;border:1.5px solid var(--bdr);border-radius:20px;
  padding:34px 30px;position:relative;overflow:hidden;
  transition:transform .3s,box-shadow .3s,border-color .3s;
}
.ad-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:4px;
  background:var(--n);border-radius:20px 20px 0 0;
}
.ad-card:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(27,20,100,.1);border-color:var(--n)}
.ad-card.feat{background:linear-gradient(160deg,#faf9ff,#fff);border-color:rgba(27,20,100,.3);box-shadow:0 6px 22px rgba(27,20,100,.08)}
.ad-pop{
  position:absolute;top:18px;right:18px;
  background:var(--n);color:#fff;font-size:.72rem;font-weight:700;
  letter-spacing:.8px;text-transform:uppercase;padding:5px 13px;border-radius:50px;
}
.ad-tier{font-size:.75rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--n);margin-bottom:6px}
.ad-name{font-size:1.4rem;font-weight:700;color:var(--n);margin-bottom:8px;line-height:1.2}
.ad-price{display:flex;align-items:baseline;gap:4px;margin-bottom:5px}
.ad-amt{font-size:2.6rem;font-weight:700;color:var(--n);line-height:1}
.ad-note{font-size:.85rem;color:var(--muted);margin-bottom:8px}
.ad-timeline{display:inline-flex;align-items:center;gap:5px;font-size:.82rem;font-weight:600;color:var(--n);background:rgba(27,20,100,.07);padding:5px 12px;border-radius:50px;margin-bottom:18px}
.ad-ideal{font-size:.9rem;color:var(--muted);margin-bottom:22px;padding-bottom:20px;border-bottom:1px solid var(--bdr);line-height:1.6}
.ad-feats{list-style:none;display:flex;flex-direction:column;gap:11px;margin-bottom:22px}
.ad-feats li{display:flex;align-items:flex-start;gap:11px;font-size:.92rem;color:#4d4d4d;line-height:1.5}
.ad-feats .ck{flex-shrink:0;width:19px;height:19px;background:var(--n);border-radius:50%;display:flex;align-items:center;justify-content:center;margin-top:2px}
.ad-feats .ck svg{width:9px;height:9px;stroke:#fff;stroke-width:3;fill:none}
.ad-del{background:var(--bg);border-radius:10px;padding:16px 18px;margin-bottom:22px}
.ad-del h5{font-size:.72rem;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.ad-del ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.ad-del li{font-size:.88rem;color:#4d4d4d;display:flex;gap:8px}
.ad-del li::before{content:'→';color:var(--n);font-size:.8rem;flex-shrink:0;line-height:1.8}
.ad-btn{
  display:block;width:100%;text-align:center;padding:14px;border-radius:10px;
  background:var(--n);color:#fff;font-family:'Red Hat Text',sans-serif;
  font-weight:600;font-size:.95rem;text-decoration:none;
  transition:opacity .2s,transform .2s,box-shadow .2s;
}
.ad-btn:hover{opacity:.85;transform:translateY(-1px);box-shadow:0 6px 16px rgba(27,20,100,.24);color:#fff}

/* ── TECH STACK SECTION ── */
.ad-tech-wrap{background:#fff;border:1.5px solid var(--bdr);border-radius:18px;overflow:hidden;margin-bottom:52px}
.ad-tech-hd{padding:24px 28px 16px;border-bottom:1px solid var(--bdr)}
.ad-tech-hd h3{font-size:1.15rem;font-weight:700;color:var(--n)}
.ad-tech-hd p{font-size:.9rem;color:var(--muted);margin-top:4px}
.ad-tech-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.ad-tech-col{padding:22px 26px;border-right:1px solid var(--bdr)}
.ad-tech-col:last-child{border-right:none}
.ad-tech-col h4{font-size:.78rem;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
.ad-tech-chips{display:flex;flex-direction:column;gap:8px}
.ad-chip{display:inline-flex;align-items:center;gap:7px;font-size:.88rem;font-weight:600;color:#4d4d4d;padding:5px 0}
.ad-chip-dot{width:8px;height:8px;border-radius:50%;background:var(--n);flex-shrink:0}

/* ── COMPARISON TABLE ── */
.ad-tbl-wrap{background:#fff;border:1.5px solid var(--bdr);border-radius:18px;overflow:hidden;margin-bottom:52px}
.ad-tbl-hd{padding:24px 28px 16px;border-bottom:1px solid var(--bdr)}
.ad-tbl-hd h3{font-size:1.15rem;font-weight:700;color:var(--n)}
.ad-tbl-hd p{font-size:.9rem;color:var(--muted);margin-top:4px}
.ad-tbl{width:100%;border-collapse:collapse}
.ad-tbl th{padding:13px 18px;font-size:.85rem;font-weight:700;font-family:'Red Hat Text',sans-serif;border-bottom:2px solid var(--bdr);text-align:center;color:var(--n)}
.ad-tbl th:first-child{text-align:left;color:var(--muted)}
.ad-tbl td{padding:11px 18px;font-size:.9rem;border-bottom:1px solid #f2f0fb;text-align:center;color:#4d4d4d}
.ad-tbl td:first-child{text-align:left;font-weight:500}
.ad-tbl tr:last-child td{border-bottom:none}
.ad-tbl tr:hover td{background:#faf9ff}
.ad-tbl .hl{background:rgba(27,20,100,.03)}
.ad-ck{color:#1a9e6e;font-weight:700;font-size:1.1rem}
.ad-x{color:#d0cce8}
.ad-v{color:var(--n);font-weight:600}

/* ── PROCESS ── */
.ad-proc-wrap{background:var(--bg);border-radius:18px;padding:36px 30px;margin-bottom:52px}
.ad-proc-hd{margin-bottom:26px}
.ad-proc-hd h3{font-size:1.15rem;font-weight:700;color:var(--n);margin-bottom:5px}
.ad-proc-hd p{font-size:.9rem;color:var(--muted)}
.ad-proc-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
.ad-proc-steps::before{content:'';position:absolute;top:24px;left:10%;right:10%;height:2px;background:linear-gradient(90deg,transparent,var(--bdr) 10%,var(--bdr) 90%,transparent)}
.ad-proc-step{text-align:center;padding:0 8px;position:relative;z-index:1}
.ad-proc-num{width:50px;height:50px;border-radius:50%;background:#fff;border:2px solid var(--bdr);display:flex;align-items:center;justify-content:center;margin:0 auto 13px;font-size:.82rem;font-weight:700;color:var(--n);transition:all .3s}
.ad-proc-step:hover .ad-proc-num{background:var(--n);color:#fff;border-color:var(--n)}
.ad-proc-step h5{font-size:.86rem;font-weight:700;color:var(--n);margin-bottom:5px}
.ad-proc-step p{font-size:.79rem;color:var(--muted);line-height:1.4}

/* ── ADDONS ── */
.ad-lbl{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.ad-lbl::after{content:'';flex:1;height:1px;background:var(--bdr)}
.ad-lbl span{font-size:.75rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--n);white-space:nowrap}
.ad-addons{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:52px}
.ad-addon{background:#fff;border:1.5px solid var(--bdr);border-radius:14px;padding:20px 22px;transition:border-color .25s,transform .25s}
.ad-addon:hover{border-color:var(--n);transform:translateY(-3px)}
.ad-ap{font-size:1.2rem;font-weight:700;color:var(--n)}
.ad-an{font-size:.9rem;color:#4d4d4d;margin-top:4px;line-height:1.5}

/* ── WHY SECTION ── */
.ad-why{background:linear-gradient(135deg,#1b1464 0%,#2c1f9a 100%);border-radius:22px;padding:56px 46px;margin-bottom:44px;position:relative;overflow:hidden}
.ad-why::before{content:'';position:absolute;top:-80px;right:-80px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.04)}
.ad-wgrid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.ad-wbadge{display:inline-block;background:rgba(255,255,255,.12);color:#fff;font-size:.75rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;padding:6px 16px;border-radius:50px;border:1px solid rgba(255,255,255,.2);margin-bottom:14px}
.ad-wh2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:700;color:#fff;margin-bottom:12px;line-height:1.2}
.ad-wh2 em{font-style:normal;text-decoration:underline;text-underline-offset:4px}
.ad-wp{color:rgba(255,255,255,.62);font-size:.95rem}
.ad-wcta{display:inline-block;margin-top:26px;background:#fff;color:var(--n);padding:13px 28px;border-radius:50px;font-family:'Red Hat Text',sans-serif;font-weight:700;font-size:.92rem;text-decoration:none;transition:transform .2s,box-shadow .2s}
.ad-wcta:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.2);color:var(--n)}
.ad-witems{display:flex;flex-direction:column;gap:14px}
.ad-wi{display:flex;gap:13px;align-items:flex-start;background:rgba(255,255,255,.07);border-radius:13px;padding:17px;border:1px solid rgba(255,255,255,.1);transition:background .25s}
.ad-wi:hover{background:rgba(255,255,255,.1)}
.ad-wico{width:38px;height:38px;border-radius:9px;background:rgba(255,255,255,.13);display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0}
.ad-wi h4{font-size:.92rem;font-weight:700;color:#fff;margin-bottom:3px}
.ad-wi p{font-size:.85rem;color:rgba(255,255,255,.58);line-height:1.5}

/* ── CTA ── */
.ad-cta{background:#ede9ff;border:1.5px solid rgba(27,20,100,.14);border-radius:18px;padding:48px 40px;text-align:center}
.ad-cta h3{font-size:1.55rem;font-weight:700;color:var(--n);margin-bottom:10px;line-height:1.25}
.ad-cta p{color:var(--soft);margin-bottom:28px;font-size:.97rem}
.ad-ctabtns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.ad-cp{background:var(--n);color:#fff;padding:14px 30px;border-radius:50px;font-family:'Red Hat Text',sans-serif;font-weight:700;font-size:.93rem;text-decoration:none;transition:opacity .2s,transform .2s}
.ad-cp:hover{opacity:.86;transform:translateY(-2px);color:#fff}
.ad-co{background:transparent;color:var(--n);border:1.5px solid var(--n);padding:14px 30px;border-radius:50px;font-family:'Red Hat Text',sans-serif;font-weight:600;font-size:.93rem;text-decoration:none;transition:background .2s,color .2s}
.ad-co:hover{background:var(--n);color:#fff}

/* ══ TABLET ══ */
@media(max-width:960px){
  .ad-grid{grid-template-columns:1fr 1fr}
  .ad-wgrid{grid-template-columns:1fr;gap:30px}
  .ad-why{padding:42px 30px}
  .ad-addons{grid-template-columns:1fr 1fr 1fr}
  .ad-tech-grid{grid-template-columns:1fr 1fr}
  .ad-tech-col:nth-child(2){border-right:none}
  .ad-tech-col:nth-child(3){border-top:1px solid var(--bdr);border-right:1px solid var(--bdr)}
  .ad-tech-col:nth-child(4){border-top:1px solid var(--bdr)}
  .ad-proc-steps{grid-template-columns:repeat(3,1fr)}
  .ad-proc-steps::before{display:none}
}

/* ══ MOBILE ══ */
@media(max-width:640px){
  .ad-grid{grid-template-columns:1fr;gap:20px}
  .ad-intro{padding:38px 18px 32px;border-radius:16px}
  .ad-h1{font-size:1.9rem}
  .ad-sub{font-size:.95rem}
  .ad-stats{gap:20px;margin-top:24px}
  .ad-sn{font-size:1.5rem}
  .ad-card{padding:26px 20px}
  .ad-name{font-size:1.25rem}
  .ad-amt{font-size:2.2rem}
  .ad-feats li{font-size:.9rem}
  .ad-ideal{font-size:.88rem}
  .ad-tbl-wrap{border-radius:14px;margin-bottom:32px}
  .ad-tbl th,.ad-tbl td{padding:10px 9px;font-size:.8rem}
  .ad-tbl th:nth-child(3),.ad-tbl td:nth-child(3){display:none}
  .ad-tech-grid{grid-template-columns:1fr 1fr}
  .ad-tech-col{border-right:none;border-bottom:1px solid var(--bdr)}
  .ad-tech-col:last-child{border-bottom:none}
  .ad-proc-steps{grid-template-columns:1fr 1fr}
  .ad-proc-steps::before{display:none}
  .ad-addons{grid-template-columns:1fr;margin-bottom:32px}
  .ad-why{padding:32px 20px;border-radius:16px}
  .ad-wh2{font-size:1.4rem}
  .ad-cta{padding:30px 18px;border-radius:14px}
  .ad-cta h3{font-size:1.25rem}
  .ad-ctabtns{flex-direction:column}
  .ad-cp,.ad-co{text-align:center}
  .ad-platforms{gap:7px}
  .ad-plat{font-size:.8rem;padding:6px 12px}
}
@media(max-width:400px){
  .ad-stats{flex-direction:column;gap:10px;align-items:center}
}