/* netool.org — Network Tools Theme */
:root {
  --bg: #0b0f1a;
  --bg-card: #121828;
  --bg-card-hover: #1a2240;
  --bg-input: #0e1322;
  --accent: #3b82f6;
  --accent-dim: rgba(59, 130, 246, 0.15);
  --text: #e8e8e8;
  --text-secondary: #8892a4;
  --border: #1e293b;
  --radius: 12px;
  --radius-sm: 8px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}
a{color:var(--accent);text-decoration:none}
a:hover{opacity:0.85}

.b-header{position:sticky;top:0;z-index:100;background:rgba(11,15,26,0.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.b-header-inner{max-width:1280px;margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;gap:24px}
.b-logo{display:flex;align-items:center;gap:8px;color:var(--text)!important;font-size:20px;font-weight:700;letter-spacing:-0.5px}
.b-logo small{color:var(--text-secondary);font-weight:400;font-size:14px}
.b-nav{display:flex;gap:20px;flex:1}
.b-nav a{color:var(--text-secondary);font-size:14px;transition:color .2s}
.b-nav a:hover{color:var(--accent)}
.b-lang-switch{margin-left:auto;background:var(--bg-card);color:var(--text);border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px 12px;font-size:13px;cursor:pointer;appearance:auto}
.b-lang-switch option{background:var(--bg-card);color:var(--text)}
.b-main{min-height:calc(100vh - 120px)}

.h-hero{position:relative;padding:80px 24px 60px;text-align:center;overflow:hidden}
.h-hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse 800px 400px at 50% 0%,rgba(59,130,246,0.08),transparent);pointer-events:none}
.h-hero-content{position:relative;max-width:720px;margin:0 auto}
.h-hero-title{font-size:clamp(32px,5vw,52px);font-weight:800;letter-spacing:-1px;line-height:1.15;margin-bottom:16px}
.h-hero-sub{font-size:18px;color:var(--text-secondary);margin-bottom:36px;line-height:1.5}

.h-tools{max-width:1280px;margin:0 auto;padding:0 24px 80px}
.h-section-title{font-size:24px;font-weight:700;margin-bottom:24px}
.h-cat-title{font-size:20px;font-weight:600;margin:40px 0 16px;color:var(--text-secondary)}
.h-hot-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;margin-bottom:20px}
.h-tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.hc-card{display:flex;flex-direction:column;gap:6px;padding:16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);color:var(--text)!important;transition:all .25s}
.hc-card:hover{background:var(--bg-card-hover);border-color:var(--accent);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,0.3)}
.hc-hot{border-color:var(--accent);border-width:1.5px}
.hc-name{font-weight:600;font-size:14px}
.hc-desc{font-size:12px;color:var(--text-secondary);line-height:1.4}

.t-section{padding:48px 24px}
.t-container{max-width:960px;margin:0 auto}
.t-title{font-size:clamp(24px,3vw,36px);font-weight:800;margin-bottom:8px}
.t-desc{color:var(--text-secondary);font-size:16px;margin-bottom:32px}
.t-toolbox{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:40px}
@media(max-width:768px){.t-toolbox{grid-template-columns:1fr}}
.t-input-area{display:flex;flex-direction:column;gap:12px}
.t-input{width:100%;padding:14px 16px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-family:var(--font-mono);font-size:14px;transition:border-color .3s}
.t-input:focus{outline:none;border-color:var(--accent)}
.t-btn{padding:10px 24px;background:var(--accent);color:#fff;border:none;border-radius:var(--radius-sm);font-size:14px;font-weight:600;cursor:pointer;transition:opacity .2s;align-self:flex-start}
.t-btn:hover{opacity:0.9}
.t-output-area{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.t-output-label{font-size:13px;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:12px}
.t-output{font-family:var(--font-mono);font-size:14px;line-height:1.6;white-space:pre-wrap;word-break:break-all;min-height:40px;color:var(--text-secondary)}
.t-result-box{margin-bottom:0}
.tr-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--border);gap:8px}
.tr-label{color:var(--text-secondary);flex-shrink:0}
.tr-val{font-weight:600;color:var(--accent);text-align:right;word-break:break-all}
.t-error{color:#ff6b6b;font-size:14px}

.t-faq{max-width:960px;margin:0 auto 60px;padding:0 24px}
.t-faq h3{margin-bottom:20px;font-size:18px}
.t-faq-item{padding:16px 0;border-bottom:1px solid var(--border)}
.t-faq-item h4{font-size:15px;font-weight:600;margin-bottom:6px;cursor:pointer;color:var(--text)}
.t-faq-item p{font-size:14px;color:var(--text-secondary);line-height:1.6}

.s-section{padding:60px 24px}
.s-container{max-width:720px;margin:0 auto}
.s-container h1{font-size:32px;font-weight:800;margin-bottom:24px}
.s-container p{color:var(--text-secondary);font-size:16px;line-height:1.8;margin-bottom:16px}

.b-footer{border-top:1px solid var(--border);padding:32px 24px;background:rgba(11,15,26,0.6)}
.b-footer-inner{max-width:1280px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.b-footer-links{display:flex;gap:16px}
.b-footer-links a{color:var(--text-secondary);font-size:13px}
.b-footer-copy{color:var(--text-secondary);font-size:12px}

::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}

@media(max-width:640px){
.b-header-inner{padding:0 16px;gap:12px}
.b-nav a{font-size:13px}
.h-hero{padding:48px 16px 40px}
.h-tools{padding:0 16px 60px}
.t-section{padding:32px 16px}
.h-tool-grid,.h-hot-grid{grid-template-columns:repeat(2,1fr)}
}