/* ============================================================
   NxtDoc Blog — shared stylesheet
   Reuses the site's existing design tokens (dark navy / blue / gold)
   ============================================================ */
:root{
  --bg:#060b14;
  --surface:#0d1829;
  --surface2:#111e35;
  --blue-900:#0a1628;--blue-800:#0f2044;--blue-700:#1a3060;
  --blue-600:#1a4fd6;--blue-500:#2563eb;--blue-400:#3b82f6;
  --blue-100:#dbeafe;--blue-50:#eff6ff;--sky:#38bdf8;
  --green:#16a34a;--amber:#f59e0b;--red:#ef4444;
  --white:#ffffff;--gray-50:#f8fafc;--gray-100:#f1f5f9;
  --gray-200:#e2e8f0;--gray-400:#94a3b8;--gray-600:#475569;--gray-700:#334155;--gray-800:#1e293b;
  --gold-start:#f59e0b;--gold-end:#d97706;
  --font-d:'Sora',sans-serif;--font-b:'DM Sans',sans-serif;
  --ease:cubic-bezier(.16,1,.3,1);
  --shadow-glow:0 0 40px rgba(37,99,235,.35);
}
*{box-sizing:border-box;}
body{margin:0;font-family:var(--font-b);background:var(--bg);color:rgba(255,255,255,.9);line-height:1.65;overflow-x:hidden;}
img{max-width:100%;display:block;}
a{color:var(--sky);}
h1,h2,h3,h4{font-family:var(--font-d);color:#fff;line-height:1.25;margin:0 0 .6em;}
.container{max-width:1180px;margin:0 auto;padding:0 1.25rem;}

/* ── NAV (matches main site) ── */
#navbar{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:0 1.25rem;height:62px;background:rgba(6,11,20,.95);backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.08);transition:all .4s var(--ease);}
.nav-brand{display:flex;align-items:center;}
.nav-brand img{height:38px;width:auto;display:block;}
.nav-links{display:flex;gap:.2rem;align-items:center;flex-wrap:wrap;}
.nav-links a{font-size:.78rem;font-weight:600;color:rgba(255,255,255,.75);text-decoration:none;padding:.38rem .55rem;border-radius:7px;transition:background .2s,color .2s;position:relative;}
.nav-links a:hover,.nav-links a.active{background:rgba(37,99,235,.18);color:#fff;}
.nav-auth-btn{display:flex;align-items:center;gap:.35rem;background:rgba(255,255,255,.06);border:1.5px solid rgba(255,255,255,.15);color:#fff;border-radius:8px;padding:.38rem .7rem;font-family:var(--font-b);font-size:.75rem;font-weight:600;cursor:pointer;transition:background .2s;text-decoration:none;}
.nav-auth-btn:hover{background:rgba(255,255,255,.15);}
.nav-hamburger{display:none;align-items:center;justify-content:center;width:38px;height:38px;cursor:pointer;padding:0;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);border-radius:8px;font-size:1.4rem;line-height:1;color:rgba(255,255,255,.85);transition:background .2s,transform .2s;}
.nav-hamburger:hover{background:rgba(255,255,255,.15);}
.nav-hamburger.open{background:rgba(37,99,235,.28);border-color:var(--blue-500);color:#fff;transform:rotate(90deg);}
.nav-mobile{position:fixed;top:62px;left:0;right:0;background:rgba(6,11,20,.98);backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.08);padding:1rem 1.25rem 1.5rem;display:flex;flex-direction:column;gap:.5rem;transform:translateY(-110%);transition:transform .4s var(--ease);z-index:99;}
.nav-mobile.open{transform:translateY(0);}
.nav-mobile a,.nav-mobile button{display:block;width:100%;text-align:left;font-size:.9rem;font-weight:600;color:rgba(255,255,255,.85);text-decoration:none;padding:.75rem;border-radius:10px;background:none;border:none;font-family:var(--font-b);cursor:pointer;}
.nav-mobile a:hover,.nav-mobile a.active{background:rgba(37,99,235,.18);color:#fff;}
.nav-mobile .mob-auth{background:var(--blue-500);color:#fff;text-align:center;}
@media(max-width:1024px){.nav-links{display:none;}.nav-hamburger{display:flex;}}

/* ── FOOTER (matches main site) ── */
footer{padding:3.5rem 1.25rem 2rem;text-align:center;border-top:1px solid rgba(255,255,255,.08);margin-top:5rem;}
.footer-logo img{height:34px;margin:0 auto 1rem;}
.footer-tagline{color:var(--sky);font-weight:600;font-size:.85rem;margin-bottom:1.5rem;}
.footer-nav{display:flex;flex-wrap:wrap;justify-content:center;gap:1.25rem;margin-bottom:1.5rem;}
.footer-nav a{color:rgba(255,255,255,.6);font-size:.82rem;text-decoration:none;}
.footer-nav a:hover{color:#fff;}
.footer-divider{border:none;border-top:1px solid rgba(255,255,255,.08);max-width:1180px;margin:1.5rem auto;}
.footer-copy,.footer-dev{color:rgba(255,255,255,.4);font-size:.75rem;margin:.25rem 0;}

/* ── BLOG HERO ── */
.blog-hero{padding:8.5rem 1.25rem 3rem;text-align:center;position:relative;}
.blog-hero .eyebrow{display:inline-block;color:var(--sky);font-weight:700;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;background:rgba(56,189,248,.1);border:1px solid rgba(56,189,248,.25);padding:.4rem .9rem;border-radius:99px;margin-bottom:1rem;}
.blog-hero h1{font-size:clamp(1.9rem,4vw,3rem);margin-bottom:.6rem;}
.blog-hero p{color:rgba(255,255,255,.65);max-width:640px;margin:0 auto;font-size:1rem;}

/* ── SEARCH & FILTERS ── */
.blog-controls{max-width:1180px;margin:0 auto 2.5rem;padding:0 1.25rem;display:flex;flex-direction:column;gap:1.1rem;}
.blog-search{position:relative;max-width:520px;margin:0 auto;width:100%;}
.blog-search input{width:100%;padding:.85rem 1.1rem .85rem 2.7rem;border-radius:12px;border:1.5px solid rgba(255,255,255,.12);background:var(--surface);color:#fff;font-family:var(--font-b);font-size:.92rem;}
.blog-search input::placeholder{color:rgba(255,255,255,.4);}
.blog-search input:focus{outline:none;border-color:var(--blue-500);}
.blog-search .icon{position:absolute;left:.95rem;top:50%;transform:translateY(-50%);opacity:.5;}
.cat-filters{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;}
.cat-chip{background:var(--surface);border:1.5px solid rgba(255,255,255,.1);color:rgba(255,255,255,.75);font-family:var(--font-b);font-size:.78rem;font-weight:600;padding:.5rem 1rem;border-radius:99px;cursor:pointer;transition:all .2s;}
.cat-chip:hover{border-color:var(--blue-500);color:#fff;}
.cat-chip.active{background:var(--blue-500);border-color:var(--blue-500);color:#fff;}

/* ── FEATURED ARTICLE ── */
.featured-wrap{max-width:1180px;margin:0 auto 3.5rem;padding:0 1.25rem;}
.featured-card{display:grid;grid-template-columns:1.1fr 1fr;gap:0;background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:20px;overflow:hidden;text-decoration:none;transition:transform .3s var(--ease),box-shadow .3s;}
.featured-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-glow);}
.featured-img{min-height:280px;display:flex;align-items:center;justify-content:center;font-size:4.5rem;position:relative;overflow:hidden;}
.featured-body{padding:2.2rem;display:flex;flex-direction:column;justify-content:center;}
.post-cat-tag{display:inline-block;align-self:flex-start;background:rgba(37,99,235,.18);color:var(--sky);font-size:.7rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;padding:.3rem .7rem;border-radius:99px;margin-bottom:.9rem;}
.featured-body h2{font-size:1.5rem;margin-bottom:.7rem;}
.featured-body p{color:rgba(255,255,255,.6);font-size:.92rem;margin-bottom:1.1rem;}
.post-meta{display:flex;flex-wrap:wrap;gap:.9rem;font-size:.78rem;color:rgba(255,255,255,.45);}

/* ── ARTICLE GRID ── */
.blog-grid-wrap{max-width:1180px;margin:0 auto;padding:0 1.25rem 4rem;}
.blog-grid-wrap h2.section-title{font-size:1.4rem;margin-bottom:1.5rem;}
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;}
.post-card{background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:16px;overflow:hidden;text-decoration:none;display:flex;flex-direction:column;transition:transform .3s var(--ease),box-shadow .3s,border-color .3s;}
.post-card:hover{transform:translateY(-5px);box-shadow:0 12px 30px rgba(0,0,0,.4);border-color:rgba(37,99,235,.4);}
.post-card-img{height:150px;display:flex;align-items:center;justify-content:center;font-size:2.6rem;}
.post-card-body{padding:1.3rem;display:flex;flex-direction:column;flex:1;}
.post-card h3{font-size:1.02rem;margin-bottom:.5rem;}
.post-card p{color:rgba(255,255,255,.55);font-size:.84rem;margin-bottom:.9rem;flex:1;}
.post-card .post-meta{font-size:.72rem;}
.no-results{text-align:center;padding:3rem 1rem;color:rgba(255,255,255,.5);display:none;}

/* Gradient image placeholders per category */
.grad-1{background:linear-gradient(135deg,#1a3060,#2563eb);}
.grad-2{background:linear-gradient(135deg,#0f2044,#38bdf8);}
.grad-3{background:linear-gradient(135deg,#4c1d95,#2563eb);}
.grad-4{background:linear-gradient(135deg,#1a4fd6,#0a1628);}
.grad-5{background:linear-gradient(135deg,#065f46,#38bdf8);}
.grad-6{background:linear-gradient(135deg,#92400e,#f59e0b);}
.grad-7{background:linear-gradient(135deg,#1e293b,#2563eb);}
.grad-8{background:linear-gradient(135deg,#0a1628,#1a3060);}
.grad-9{background:linear-gradient(135deg,#7c2d12,#2563eb);}

/* ── ARTICLE PAGE ── */
.article-hero{padding:8.5rem 1.25rem 2rem;max-width:820px;margin:0 auto;}
.breadcrumb{font-size:.78rem;color:rgba(255,255,255,.45);margin-bottom:1.2rem;}
.breadcrumb a{color:rgba(255,255,255,.55);text-decoration:none;}
.breadcrumb a:hover{color:var(--sky);}
.article-hero h1{font-size:clamp(1.7rem,3.6vw,2.5rem);margin-bottom:1rem;}
.article-meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:1.3rem;color:rgba(255,255,255,.5);font-size:.85rem;margin-bottom:1.5rem;}
.author-chip{display:flex;align-items:center;gap:.5rem;}
.author-avatar{width:32px;height:32px;border-radius:50%;background:var(--blue-500);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem;color:#fff;}
.article-cover{max-width:820px;margin:0 auto 2.5rem;height:320px;border-radius:18px;display:flex;align-items:center;justify-content:center;font-size:6rem;}
.article-body{max-width:760px;margin:0 auto;padding:0 1.25rem;font-size:1.02rem;color:rgba(255,255,255,.82);}
.article-body h2{font-size:1.35rem;margin-top:2.2rem;}
.article-body h3{font-size:1.1rem;margin-top:1.6rem;}
.article-body p{margin-bottom:1.1rem;}
.article-body ul,.article-body ol{margin-bottom:1.1rem;padding-left:1.3rem;}
.article-body li{margin-bottom:.4rem;}
.article-body strong{color:#fff;}
.share-row{display:flex;align-items:center;gap:.7rem;margin:2.5rem 0;flex-wrap:wrap;}
.share-label{font-size:.82rem;color:rgba(255,255,255,.5);font-weight:600;}
.share-btn-sm{width:38px;height:38px;border-radius:50%;background:var(--surface2);border:1px solid rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;text-decoration:none;color:#fff;font-size:1rem;transition:background .2s,transform .2s;}
.share-btn-sm:hover{background:var(--blue-500);transform:translateY(-2px);}
.author-box{max-width:760px;margin:2.5rem auto;padding:1.5rem;background:var(--surface);border:1px solid rgba(255,255,255,.08);border-radius:16px;display:flex;gap:1rem;align-items:center;}
.author-box .author-avatar{width:52px;height:52px;font-size:1.2rem;}
.author-box h4{margin:0 0 .3rem;font-size:1rem;}
.author-box p{margin:0;font-size:.85rem;color:rgba(255,255,255,.55);}
.related-wrap{max-width:1180px;margin:3rem auto 4rem;padding:0 1.25rem;}
.related-wrap h2{font-size:1.3rem;margin-bottom:1.3rem;}
.cta-band{max-width:760px;margin:2.5rem auto;padding:2rem;background:linear-gradient(135deg,var(--blue-700),var(--blue-500));border-radius:18px;text-align:center;}
.cta-band h3{margin-bottom:.5rem;}
.cta-band p{color:rgba(255,255,255,.85);margin-bottom:1.2rem;font-size:.9rem;}
.cta-band a{display:inline-block;background:#fff;color:var(--blue-700);font-weight:700;padding:.7rem 1.6rem;border-radius:10px;text-decoration:none;font-size:.9rem;}

/* Homepage "Latest Blogs" section (injected into index.html, uses same tokens) */
.home-blog-card{background:var(--surface,#0d1829);border:1px solid rgba(255,255,255,.08);border-radius:16px;overflow:hidden;text-decoration:none;display:flex;flex-direction:column;transition:transform .3s var(--ease,cubic-bezier(.16,1,.3,1)),box-shadow .3s,border-color .3s;}
.home-blog-card:hover{transform:translateY(-5px);box-shadow:0 12px 30px rgba(0,0,0,.4);border-color:rgba(37,99,235,.4);}

/* ── RESPONSIVE ── */
@media(max-width:1000px){.blog-grid{grid-template-columns:repeat(2,1fr);}.featured-card{grid-template-columns:1fr;}.featured-img{min-height:200px;}}
@media(max-width:640px){
  .blog-grid{grid-template-columns:1fr;}
  .blog-hero{padding:7rem 1.1rem 2.2rem;}
  .featured-body{padding:1.5rem;}
  .article-cover{height:200px;font-size:3.5rem;margin-bottom:1.8rem;}
  .article-hero{padding:7rem 1.1rem 1.5rem;}
  .author-box{flex-direction:column;text-align:center;}
}