/* Sale Page Builder — public site styles (v3, NovaSpark design system) */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  /* NovaSpark — primary */
  --primary:#2563eb;
  --primary-hover:#1d4ed8;
  --primary-active:#1e40af;
  --primary-bg:#dbeafe;
  --accent:#f97316;
  --gradient:linear-gradient(135deg,#2563eb 0%,#1e40af 100%);

  /* Neutrals */
  --ink:#111827;
  --ink-soft:#4b5563;
  --muted:#9ca3af;
  --bg:#ffffff;
  --bg-alt:#f8fafc;
  --bg-subtle:#f3f4f6;
  --border:#e5e7eb;
  --border-strong:#d1d5db;

  /* Status */
  --success:#22c55e;--success-bg:#dcfce7;--success-text:#15803d;
  --warning:#f97316;--warning-bg:#fef3c7;--warning-text:#b45309;
  --danger:#ef4444;--danger-bg:#fee2e2;--danger-text:#b91c1c;

  /* Elevation */
  --shadow-sm:0 1px 2px rgba(0,0,0,.05);
  --shadow-md:0 4px 6px rgba(0,0,0,.07);
  --shadow-lg:0 10px 15px rgba(0,0,0,.1);
  --shadow-xl:0 20px 25px rgba(0,0,0,.15);
  --shadow:var(--shadow-md);

  /* Radius scale */
  --radius-sm:4px;
  --radius-md:8px;
  --radius-lg:12px;
  --radius-xl:16px;
  --radius-full:9999px;
  --radius:var(--radius-lg);

  /* Type */
  --font:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-mono:'JetBrains Mono','SFMono-Regular',Consolas,monospace;

  /* Motion */
  --anim-fast:100ms ease-out;
  --anim-base:200ms ease-in-out;
  --anim-slow:350ms ease-in-out;
  --anim-spring:400ms cubic-bezier(.34,1.56,.64,1);
}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink-soft);background:var(--bg);line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:color var(--anim-fast)}
a:hover{color:var(--primary-hover)}
a:focus-visible,button:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:var(--radius-sm)}
img{max-width:100%;height:auto;display:block}
.container{max-width:768px;margin:0 auto;padding:0 24px}

/* Loading */
.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:70vh;gap:16px;color:var(--muted)}
.loader{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .75s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.85);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--border)}
.header-inner{max-width:768px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;min-width:0}
.site-logo{height:34px;width:34px;object-fit:contain;border-radius:var(--radius-md);flex-shrink:0}
.site-title{font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.site-nav{display:flex;align-items:center;gap:2px;flex-shrink:0}
.nav-link{font-size:14px;font-weight:600;color:var(--ink-soft);padding:8px 14px;border-radius:var(--radius-md);transition:background var(--anim-fast),color var(--anim-fast)}
.nav-link:hover{color:var(--primary);background:var(--primary-bg)}

/* Sale content */
.sale-content{min-height:55vh;padding:40px 24px;max-width:768px;margin:0 auto;overflow-wrap:break-word}
.sale-content img{border-radius:var(--radius-md);margin:18px 0}
.sale-content h1,.sale-content h2,.sale-content h3{margin:32px 0 14px;color:var(--ink);font-weight:700;letter-spacing:-.01em}
.sale-content h1{font-size:36px;line-height:1.2}
.sale-content h2{font-size:28px;line-height:1.3}
.sale-content h3{font-size:22px;line-height:1.4}
.sale-content p{margin-bottom:16px;line-height:1.85;font-size:16px}
.sale-content ul,.sale-content ol{margin:12px 0 16px 24px}
.sale-content blockquote{border-left:4px solid var(--primary);padding:14px 22px;margin:20px 0;background:var(--bg-subtle);border-radius:0 var(--radius-md) var(--radius-md) 0;font-style:italic}
.sale-content pre{background:var(--ink);color:#e5e7eb;padding:18px;border-radius:var(--radius-md);overflow-x:auto;margin:18px 0;font-size:13px;font-family:var(--font-mono)}
.sale-content a{color:var(--primary);font-weight:600;border-bottom:2px solid var(--primary-bg);transition:border-color var(--anim-fast)}
.sale-content a:hover{border-bottom-color:var(--primary)}
.sale-content .ql-align-center{text-align:center}
.sale-content .ql-align-right{text-align:right}
.sale-content .ql-align-justify{text-align:justify}
.sale-content .ql-video{width:100%;aspect-ratio:16/9;border-radius:var(--radius-md)}

/* Empty state */
.empty-state{text-align:center;padding:72px 20px;color:var(--muted)}
.empty-state h1,.empty-state h2,.empty-state h3{color:var(--ink);margin-bottom:8px;font-weight:700}

/* Footer */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--border);padding:36px 20px;text-align:center;color:var(--ink-soft);font-size:14px}
.site-footer p{margin-bottom:8px}
.social-links{display:flex;justify-content:center;gap:10px;margin-top:14px;flex-wrap:wrap}
.social-links a{font-weight:600;padding:7px 16px;border-radius:var(--radius-full);background:var(--bg);border:1px solid var(--border-strong);transition:all var(--anim-fast);font-size:13px;color:var(--ink-soft)}
.social-links a:hover{background:var(--ink);color:#fff;border-color:var(--ink)}

/* Blog listing */
.blog-listing{padding:44px 0 64px}
.section-title{font-size:28px;line-height:1.3;font-weight:600;letter-spacing:-.01em;margin-bottom:26px;color:var(--ink)}
.posts-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:24px}
.post-card{display:block;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-xl);overflow:hidden;transition:transform var(--anim-base),box-shadow var(--anim-base);color:var(--ink)}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.post-thumb{width:100%;height:170px;object-fit:cover}
.post-thumb-placeholder{width:100%;height:170px;background:var(--gradient);opacity:.15}
.post-info{padding:18px}
.post-info h3{font-size:16px;font-weight:600;margin-bottom:6px;line-height:1.4}
.post-info p{font-size:13.5px;color:var(--muted);margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-info time{font-size:12px;color:var(--muted);font-weight:500}

/* Single post */
.post-page{padding:44px 0 64px}
.post-full{max-width:720px;margin:0 auto}
.back-link{display:inline-flex;align-items:center;gap:6px;margin-bottom:22px;font-size:14px;font-weight:600;color:var(--primary)}
.post-cover-full{width:100%;border-radius:var(--radius-xl);margin-bottom:26px;max-height:420px;object-fit:cover}
.post-title-full{font-size:36px;font-weight:700;letter-spacing:-.015em;line-height:1.2;margin-bottom:12px;color:var(--ink)}
.post-meta{font-size:14px;color:var(--muted);margin-bottom:26px;padding-bottom:22px;border-bottom:1px solid var(--border)}
.post-body{font-size:16.5px;line-height:1.85;overflow-wrap:break-word}
.post-body img{border-radius:var(--radius-md);margin:22px 0}
.post-body h2,.post-body h3{color:var(--ink);margin:30px 0 14px;font-weight:700}
.post-body p{margin-bottom:16px}
.post-body ul,.post-body ol{margin:12px 0 16px 24px}
.post-body blockquote{border-left:4px solid var(--primary);padding:14px 22px;margin:18px 0;background:var(--bg-subtle);border-radius:0 var(--radius-md) var(--radius-md) 0}
.post-body .ql-align-center{text-align:center}
.post-body .ql-align-right{text-align:right}
.post-body .ql-align-justify{text-align:justify}

/* Responsive */
@media(max-width:640px){
  .header-inner{padding:10px 16px}
  .site-title{font-size:15px}
  .site-nav{gap:2px}
  .nav-link{font-size:12.5px;padding:7px 10px}
  .posts-grid{grid-template-columns:1fr}
  .post-title-full{font-size:26px}
  .sale-content{padding:26px 16px}
  .sale-content h1{font-size:26px}
  .sale-content h2{font-size:21px}
  .section-title{font-size:22px}
  .container{padding:0 16px}
}