/* ===== Tokens ===== */
:root{
  --main:#3080E5; --main-2:#1e5fb4;
  --text:#0f172a; --muted:#475569; --edge:#E7EEF9;
  --shadow:0 10px 30px rgba(0,0,0,.12);
  --radius:16px;
  --gutter:clamp(16px, 5vw, 56px);
  --sectionY:clamp(72px, 12vh, 128px);
}

/* ===== Base & overflow fixes ===== */
*{box-sizing:border-box}
html,body{width:100%;overflow-x:clip}
body{
  margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial;
  color:var(--text); background:var(--edge);
}
.hero, .site-bg{
  background-color:var(--edge);
  background-image:
    radial-gradient(60% 60% at 70% 10%, rgba(48,128,229,0.16) 0%, var(--edge) 75%),
    radial-gradient(40% 40% at 0% 90%,  rgba(48,128,229,0.12) 0%, var(--edge) 80%);
  background-repeat:no-repeat;background-size:cover;
}

/* ===== Layout ===== */
.section{padding-block:var(--sectionY)}
.container{max-width:1200px;margin-inline:auto;padding-inline:var(--gutter)}
.grid-2{display:grid;gap:2rem}
@media(min-width:1024px){.grid-2{grid-template-columns:1fr 1fr}}
.v-center{align-items:center}
.gap-lg{gap:2.5rem}
.center{display:grid;place-items:center}
.stack-gap > * + *{margin-top:12px}

/* ===== Navbar ===== */
.nav{position:sticky;top:0;z-index:50;background:#ffffffb3;backdrop-filter:blur(10px);border-bottom:1px solid #00000014}
.nav-inner{height:64px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;color:inherit}
.brand-logo{width:36px;height:36px;border-radius:12px;object-fit:cover;box-shadow:var(--shadow);background:#fff}
.brand-text{font-weight:700;letter-spacing:.2px}
.muted{color:#64748b}
.nav-links{display:none;gap:1.25rem}
@media(min-width:768px){.nav-links{display:flex}}
.nav-link{font-size:.95rem;color:#1f2937}
.nav-link:hover{color:#0f172a}
.nav-cta{display:flex;gap:.6rem}

/* ===== Buttons / Badges ===== */
.btn{border:none;border-radius:12px;padding:.6rem 1rem;font-weight:600;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--main),var(--main-2));color:#fff;box-shadow:var(--shadow)}
.btn:hover{opacity:.95}
.btn-secondary{background:#fff;color:#111;border:1px solid #e2e8f0}
.btn-sm{padding:.45rem .8rem;font-size:.9rem}
.btn-lg{padding:.8rem 1.2rem;font-size:1rem}
.badge{display:inline-flex;align-items:center;padding:.35rem .7rem;border-radius:999px;font-size:.8rem;font-weight:700;background:linear-gradient(90deg,var(--main),var(--main-2));color:#fff}
.badge-secondary{background:#eef0f5;color:#111;border:1px solid #e2e8f0}

/* ===== Typography ===== */
.display{font-size:clamp(2.4rem,5vw,3.6rem);line-height:1.06;margin:0}
.h2{font-size:clamp(1.6rem,3vw,2rem);margin:0}
.lead{margin-top:1rem;max-width:60ch;color:#334155}
.muted-p{color:var(--muted)}
.grad-text{background:linear-gradient(90deg,var(--main),var(--main-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.btn-row{margin-top:1.2rem;display:flex;gap:.6rem;flex-wrap:wrap}

/* ===== Cards & Forms ===== */
.card{border:1px solid #e2e8f0;background:#ffffffa6;backdrop-filter:blur(6px);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.1rem}
.form-col{display:grid;gap:.6rem}
.input,.textarea{width:100%;border:1px solid #e2e8f0;background:#fff;border-radius:12px;padding:.7rem .9rem;font-size:.95rem}
.textarea{min-height:120px;resize:vertical}

/* ===== Checklist ===== */
.checklist{padding:0;margin:12px 0 0;list-style:none;color:#111}
.checklist li{margin:.35rem 0;padding-left:1.1rem;position:relative}
.checklist li::before{content:"•";position:absolute;left:0;color:#64748b}

/* ===== App Shot ===== */
.app-shot{width:min(360px,94vw);height:auto;border-radius:24px;box-shadow:0 16px 40px rgba(0,0,0,.25);border:1px solid #ffffff59;background:#0b0b0b;display:block}

/* ===== Placeholder ===== */
.placeholder-shot{width:100%;max-width:360px;height:560px;border-radius:24px;border:2px dashed #9aa4b2;display:grid;place-items:center;color:#64748b;background:#ffffffc2}

/* ===== Footer ===== */
.footer{border-top:1px solid #e2e8f0;padding:2rem 0}
.footer-inner{display:flex;flex-direction:column;align-items:center;gap:1rem}
@media(min-width:768px){.footer-inner{flex-direction:row;justify-content:space-between}}

/* ===== Modal ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.45);display:grid;place-items:center;z-index:100}
.hidden{display:none}
.modal{background:#fff;border-radius:16px;box-shadow:var(--shadow);padding:24px;max-width:520px;width:min(92vw,520px)}
.modal-title{margin:0 0 6px;font-size:1.25rem;font-weight:700}
.modal-sub{margin:0 0 16px;color:#475569}
.modal-actions{display:flex;gap:.6rem;flex-wrap:wrap}
.modal-close{margin-top:14px;background:transparent;border:0;color:#0f172a;opacity:.8;cursor:pointer}

/* ===== Blog ===== */
.blog-list{display:grid;grid-template-columns:1fr;gap:16px;margin-top:20px}
@media(min-width:960px){.blog-list{grid-template-columns:1fr 1fr}}
.blog-card{border:1px solid #e2e8f0;background:#fff;border-radius:14px;padding:16px;box-shadow:0 6px 16px rgba(0,0,0,.06);transition:transform .12s ease}
.blog-card:hover{transform:translateY(-1px)}
.blog-title{margin:0 0 4px;font-weight:700;font-size:1.05rem}
.blog-meta{font-size:.8rem;color:#64748b;margin-bottom:6px}
.blog-summary{margin:0;color:#334155}
.blog-article{max-width:860px;margin-inline:auto}
.blog-content p{line-height:1.65;color:#334155}
.blog-content p + p{margin-top:.8rem}

/* ===== Tag Filter ===== */
.tagbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:18px 0 10px;flex-wrap:wrap}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{border:1px solid #e2e8f0;background:#fff;border-radius:999px;padding:.35rem .8rem;font-size:.85rem;cursor:pointer}
.tag:hover{border-color:#cbd5e1}
.tag-active{border-color:transparent;color:#fff;background:linear-gradient(135deg,var(--main),var(--main-2));box-shadow:0 6px 14px rgba(0,0,0,.12)}
.tag-actions{display:flex;align-items:center;gap:8px}
.tag-clear{border:none;background:transparent;color:#334155;opacity:.8;cursor:pointer}
.tag-clear:disabled{opacity:.4;cursor:default}