/* ========================================
   SJ Creation Tool Box — Premium Design System
   ======================================== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#06060f;--bg2:#0c0c1d;--bg3:#12122a;
  --surface:rgba(255,255,255,.04);--surface2:rgba(255,255,255,.07);
  --border:rgba(255,255,255,.08);--border2:rgba(255,255,255,.12);
  --text:#eaeaf4;--muted:#7b7b9e;--muted2:#55556e;
  --accent:#6d5cff;--accent2:#00d4aa;--accent3:#ff6b9d;--accent4:#ffb84d;
  --grad:linear-gradient(135deg,#6d5cff 0%,#00d4aa 100%);
  --grad2:linear-gradient(135deg,#ff6b9d,#ffb84d);
  --grad3:linear-gradient(135deg,#6d5cff,#ff6b9d);
  --shadow:0 8px 32px rgba(0,0,0,.4);
  --glow:0 0 30px rgba(109,92,255,.15);
  --r-sm:8px;--r-md:14px;--r-lg:20px;--r-xl:28px;
  --font:'Inter',system-ui,sans-serif;
  --mono:'JetBrains Mono',monospace;
  --ease:cubic-bezier(.4,0,.2,1);
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,select{cursor:pointer;font-family:inherit}
code{font-family:var(--mono);background:rgba(109,92,255,.12);padding:2px 8px;border-radius:4px;font-size:.85em}
textarea,input[type="text"],input[type="number"],input[type="url"],input[type="password"],select{
  width:100%;padding:12px 16px;background:var(--bg2);border:1px solid var(--border2);
  border-radius:var(--r-md);color:var(--text);font-size:.95rem;font-family:inherit;
  transition:.3s var(--ease);outline:none;
}
textarea{font-family:var(--mono);resize:vertical;min-height:150px}
textarea:focus,input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(109,92,255,.15)}

.container{max-width:1260px;margin:0 auto;padding:0 24px}
.gradient-text{background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* === BUTTONS === */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border:none;border-radius:var(--r-md);font-weight:600;font-size:.95rem;transition:.3s var(--ease);cursor:pointer;text-decoration:none;position:relative;overflow:hidden}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 4px 20px rgba(109,92,255,.25)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(109,92,255,.35)}
.btn--secondary{background:var(--surface2);color:var(--text);border:1px solid var(--border2)}
.btn--secondary:hover{border-color:var(--accent);background:rgba(109,92,255,.08)}
.btn--sm{padding:8px 18px;font-size:.85rem}
.btn--lg{padding:16px 36px;font-size:1.05rem}
.btn--danger{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}
.btn-group{display:flex;gap:8px;flex-wrap:wrap}

/* === HEADER === */
#site-header{position:sticky;top:0;z-index:1000;background:rgba(6,6,15,.9);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);transition:.3s var(--ease)}
#site-header .nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:800}
.logo-icon{width:32px;height:32px;border-radius:var(--r-sm);background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:1rem}
.nav-links{display:flex;align-items:center;gap:6px;list-style:none}
.nav-links a{padding:8px 14px;border-radius:var(--r-sm);font-size:.88rem;font-weight:500;color:var(--muted);transition:.3s var(--ease)}
.nav-links a:hover,.nav-links a.active{color:var(--text);background:var(--surface2)}
.nav-toggle{display:none;background:none;border:none;flex-direction:column;gap:4px;padding:8px}
.nav-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:.3s}

/* === HERO === */
.hero{padding:100px 0 60px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;width:600px;height:600px;border-radius:50%;background:var(--accent);filter:blur(120px);opacity:.08;top:-200px;left:50%;transform:translateX(-50%)}
.hero h1{font-size:clamp(2.2rem,5vw,3.8rem);font-weight:900;line-height:1.1;margin-bottom:16px;position:relative}
.hero p{font-size:clamp(1rem,2vw,1.15rem);color:var(--muted);max-width:600px;margin:0 auto 40px}
.hero-badge{display:inline-block;padding:6px 18px;background:var(--surface);border:1px solid var(--border);border-radius:50px;font-size:.8rem;font-weight:600;margin-bottom:24px;color:var(--accent2)}
.search-box{max-width:520px;margin:0 auto;position:relative}
.search-box input{padding:16px 20px 16px 48px;border-radius:var(--r-lg);font-size:1rem;background:var(--bg2);border:1px solid var(--border2)}
.search-box input:focus{border-color:var(--accent)}
.search-icon{position:absolute;left:18px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:1.1rem}

/* === TOOL CARDS === */
.tools-section{padding:60px 0 80px}
.section-label{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:var(--surface);border:1px solid var(--border);border-radius:50px;font-size:.78rem;font-weight:600;color:var(--accent2);margin-bottom:16px}
.section-title{font-size:1.6rem;font-weight:800;margin-bottom:40px}
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.tool-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:28px 24px;transition:.3s var(--ease);cursor:pointer;position:relative;overflow:hidden}
.tool-card::before{content:'';position:absolute;inset:0;background:var(--grad);opacity:0;transition:.3s var(--ease)}
.tool-card:hover{border-color:rgba(109,92,255,.25);transform:translateY(-4px);box-shadow:var(--glow)}
.tool-card:hover::before{opacity:.03}
.tool-card__icon{width:48px;height:48px;border-radius:var(--r-md);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:16px;position:relative}
.tool-card__icon--purple{background:rgba(109,92,255,.12)}
.tool-card__icon--green{background:rgba(0,212,170,.12)}
.tool-card__icon--pink{background:rgba(255,107,157,.12)}
.tool-card__icon--orange{background:rgba(255,184,77,.12)}
.tool-card h3{font-size:1rem;font-weight:700;margin-bottom:6px;position:relative}
.tool-card p{font-size:.85rem;color:var(--muted);line-height:1.6;position:relative}
.tool-card__arrow{position:absolute;top:20px;right:20px;opacity:0;transition:.3s;color:var(--accent);font-size:1.1rem}
.tool-card:hover .tool-card__arrow{opacity:1;transform:translateX(4px)}

/* === TOOL PAGE LAYOUT === */
.tool-page{padding:100px 0 60px}
.tool-page .container{max-width:900px}
.tool-header{margin-bottom:32px}
.tool-header .breadcrumb{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--muted);margin-bottom:16px}
.tool-header .breadcrumb a{color:var(--accent);transition:.2s}
.tool-header .breadcrumb a:hover{text-decoration:underline}
.tool-header h1{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;margin-bottom:8px}
.tool-header p{color:var(--muted);font-size:1rem}

.tool-body{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-xl);padding:32px;margin-bottom:24px}
.tool-body h3{font-size:1rem;font-weight:700;margin-bottom:12px}

.field-group{margin-bottom:20px}
.field-group label{display:block;font-size:.82rem;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);margin-bottom:8px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}

.output-box{background:var(--bg);border:1px solid var(--border);border-radius:var(--r-md);padding:16px;font-family:var(--mono);font-size:.9rem;min-height:100px;white-space:pre-wrap;word-break:break-all;color:var(--accent2);position:relative;overflow:auto;max-height:400px}
.copy-btn{position:absolute;top:8px;right:8px;padding:6px 12px;background:var(--surface2);border:1px solid var(--border);border-radius:var(--r-sm);color:var(--text);font-size:.75rem;font-weight:600;cursor:pointer;transition:.2s}
.copy-btn:hover{background:var(--accent);color:#fff;border-color:var(--accent)}

.drop-zone{border:2px dashed var(--border2);border-radius:var(--r-lg);padding:48px 32px;text-align:center;cursor:pointer;transition:.3s var(--ease)}
.drop-zone:hover,.drop-zone.dragover{border-color:var(--accent);background:rgba(109,92,255,.04)}
.drop-zone h3{font-size:1.1rem;margin-bottom:4px}
.drop-zone p{color:var(--muted);font-size:.9rem}
.drop-zone .icon{font-size:2.5rem;margin-bottom:12px}

.preview-row{display:flex;gap:16px;flex-wrap:wrap;margin-top:12px}
.preview-img{max-width:200px;max-height:200px;border-radius:var(--r-md);border:1px solid var(--border);object-fit:contain;background:repeating-conic-gradient(#1a1a2e 0% 25%,#0f0f1e 0% 50%) 50%/20px 20px}

.result-bar{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;background:rgba(0,212,170,.06);border:1px solid rgba(0,212,170,.15);border-radius:var(--r-md);margin-top:16px}
.result-bar .info{font-size:.9rem;color:var(--accent2)}
.result-bar .info strong{color:var(--text)}

.range-group{display:flex;align-items:center;gap:16px}
.range-group input[type="range"]{flex:1;accent-color:var(--accent)}
.range-group .range-value{min-width:48px;text-align:center;font-weight:700;color:var(--accent);font-family:var(--mono)}

.color-display{width:100%;height:120px;border-radius:var(--r-md);border:1px solid var(--border);margin-bottom:16px;transition:background .2s}
.color-values{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.color-val{padding:12px;background:var(--bg);border:1px solid var(--border);border-radius:var(--r-sm);text-align:center}
.color-val label{display:block;font-size:.7rem;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.color-val span{font-family:var(--mono);font-size:.9rem;font-weight:600}

.qr-output{display:flex;flex-direction:column;align-items:center;gap:16px;padding:24px}
.qr-output canvas{border-radius:var(--r-md);border:1px solid var(--border)}

.checkbox-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.checkbox-row label{display:flex;align-items:center;gap:6px;font-size:.9rem;cursor:pointer}
.checkbox-row input[type="checkbox"]{accent-color:var(--accent);width:16px;height:16px}

.password-output{font-size:1.4rem;font-family:var(--mono);font-weight:600;letter-spacing:2px;padding:20px;background:var(--bg);border:1px solid var(--border);border-radius:var(--r-md);text-align:center;word-break:break-all}
.strength-bar{height:6px;border-radius:3px;background:var(--bg);margin-top:8px;overflow:hidden}
.strength-bar__fill{height:100%;border-radius:3px;transition:width .3s,background .3s}

/* === ADS === */
.ad-slot{padding:16px 0;text-align:center;min-height:90px}

/* === FOOTER === */
#site-footer{border-top:1px solid var(--border);padding:48px 0 24px;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:40px}
.footer-brand p{margin-top:10px;color:var(--muted);font-size:.88rem;line-height:1.7}
.footer-col h4{font-weight:700;margin-bottom:12px;font-size:.88rem}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col a{color:var(--muted);font-size:.85rem;transition:.2s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid var(--border);font-size:.8rem;color:var(--muted2)}

/* === TOAST === */
.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);padding:12px 24px;border-radius:var(--r-md);font-size:.9rem;font-weight:600;z-index:9999;color:#fff;background:var(--grad);box-shadow:var(--shadow);animation:slideUp .4s var(--ease)}
@keyframes slideUp{from{opacity:0;transform:translateX(-50%) translateY(20px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}

/* === RESPONSIVE === */
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}.field-row{grid-template-columns:1fr}.color-values{grid-template-columns:1fr 1fr}}
@media(max-width:640px){
  .nav-links{display:none;position:fixed;top:64px;left:0;width:100%;flex-direction:column;padding:16px;background:rgba(6,6,15,.97);backdrop-filter:blur(20px);border-bottom:1px solid var(--border)}
  .nav-links.open{display:flex}
  .nav-toggle{display:flex}
  .hero{padding:80px 0 40px}
  .tools-grid{grid-template-columns:1fr}
  .tool-body{padding:20px 16px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .color-values{grid-template-columns:1fr}
  .checkbox-row{flex-direction:column;align-items:flex-start}
}