/* AI Studio Tools — shared styles */
:root{
  --bg:#06060b;
  --bg-card:rgba(255,255,255,0.03);
  --bg-hover:rgba(255,255,255,0.07);
  --border:rgba(255,255,255,0.06);
  --text:#f0f0f5;
  --text-sec:rgba(240,240,245,0.55);
  --accent:#8178ff;
  --accent2:#FF6B35;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Inter,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6}
a{color:inherit;text-decoration:none}
img{max-width:100%}

/* nav */
.nav{display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:60px;border-bottom:1px solid var(--border);background:var(--bg);position:sticky;top:0;z-index:10}
.nav-brand{font-weight:800;display:flex;align-items:center;gap:8px;font-size:1rem}
.nav-brand-dot{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--accent2),var(--accent));display:inline-block}
.nav-links{display:flex;gap:2px;align-items:center}
.nav-links a{padding:6px 14px;border-radius:100px;font-size:0.85rem;color:var(--text-sec);transition:0.3s}
.nav-links a:hover{color:var(--text);background:var(--bg-hover)}
.nav-links a.cta{color:#fff;background:linear-gradient(135deg,var(--accent2),var(--accent));font-weight:700}
.nav-links a.cta:hover{opacity:0.9}

/* page */
.page{max-width:1000px;margin:0 auto;padding:40px 20px}
.hero{padding:20px 0 8px}
.hero h1{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:900;letter-spacing:-0.5px;background:linear-gradient(135deg,var(--accent2),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero .sub{color:var(--text-sec);font-size:0.95rem;margin-top:8px;max-width:640px}

/* breadcrumb */
.crumbs{font-size:0.78rem;color:var(--text-sec);margin-bottom:16px}
.crumbs a{color:var(--text-sec)}.crumbs a:hover{color:var(--text)}

/* tool header */
.tool-header{margin-bottom:8px}
.tool-header h1{font-size:clamp(1.4rem,2.6vw,2rem);font-weight:800;letter-spacing:-0.4px}
.tool-header p{color:var(--text-sec);font-size:0.9rem;margin-top:6px;max-width:720px}

/* tool body (textarea/input/output) */
.tool-body{margin-top:24px;background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:24px}
.tool-body label{display:block;font-size:0.78rem;font-weight:700;color:var(--text-sec);text-transform:uppercase;letter-spacing:0.4px;margin-bottom:8px}
.tool-body textarea,.tool-body input[type=text]{width:100%;background:rgba(255,255,255,0.04);border:1px solid var(--border);border-radius:10px;color:var(--text);padding:14px;font-size:0.95rem;line-height:1.6;font-family:inherit;resize:vertical}
.tool-body textarea:focus,.tool-body input:focus{outline:none;border-color:var(--accent)}
.tool-controls{margin-top:14px;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.btn{padding:10px 22px;border-radius:100px;font-size:0.9rem;font-weight:700;border:none;cursor:pointer;transition:0.2s;background:linear-gradient(135deg,var(--accent2),var(--accent));color:#fff}
.btn:hover{opacity:0.9}
.btn.ghost{background:transparent;border:1px solid var(--border);color:var(--text-sec)}
.btn.ghost:hover{color:var(--text);border-color:rgba(255,255,255,0.2)}
.output{margin-top:18px;min-height:90px;background:rgba(255,255,255,0.03);border:1px solid var(--border);border-radius:10px;padding:16px;font-size:0.95rem;white-space:pre-wrap;color:var(--text)}
.copy-note{font-size:0.75rem;color:var(--text-sec);margin-top:6px}

/* grid cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;margin-top:20px}
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:20px;text-align:center;transition:0.3s;display:block}
.card:hover{border-color:rgba(255,255,255,0.12);background:var(--bg-hover);transform:translateY(-2px)}
.card-icon{font-size:1.8rem;margin-bottom:6px}
.card-name{font-size:0.85rem;font-weight:600;margin-bottom:4px}
.card-desc{font-size:0.72rem;color:var(--text-sec);line-height:1.4}

/* sections */
.section{margin-top:34px}
.section h2{font-size:1.05rem;font-weight:800;margin-bottom:4px}
.section .section-sub{color:var(--text-sec);font-size:0.82rem;margin-bottom:14px}

/* content prose (blog/use-cases later) */
.prose{color:var(--text-sec);font-size:0.92rem;line-height:1.8}
.prose h2,.prose h3{color:var(--text);margin:20px 0 8px}
.prose p{margin-bottom:12px}
.prose ul{margin:0 0 12px 20px}

footer{margin-top:50px;padding:20px;border-top:1px solid var(--border);text-align:center;font-size:0.78rem;color:var(--text-sec)}

/* responsive */
@media (max-width:600px){.nav-links a:not(.cta){padding:6px 8px;font-size:0.78rem}.page{padding:28px 16px}}