*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg-primary:#0d1117;
  --bg-secondary:#161b22;
  --bg-card:#1c2230;
  --bg-input:#0d1117;
  --border-color:#30363d;
  --text-primary:#e6edf3;
  --text-secondary:#8b949e;
  --text-muted:#6e7681;
  --accent-blue:#1a9fd4;
  --accent-blue-hover:#1589b8;
  --accent-link:#58a6ff;
  --error-bg:#2d1b1b;
  --error-text:#f85149;
  --success:#3fb950;
  --warn:#d29922;
  --font-body:'Segoe UI',system-ui,-apple-system,sans-serif;
}

html{scroll-behavior:smooth}
body{background-color:var(--bg-primary);color:var(--text-primary);font-family:var(--font-body);font-size:16px;line-height:1.6;min-height:100vh;display:flex;flex-direction:column}

/* ── Header ─────────────────────────────── */
.site-header{background-color:var(--bg-secondary);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100}
.header-inner{max-width:1100px;margin:0 auto;padding:0 20px;height:64px;display:flex;align-items:center;justify-content:space-between}
.site-logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text-primary)}
.logo-icon{width:44px;height:44px;flex-shrink:0}
.logo-icon svg{width:100%;height:100%}
.logo-text{font-size:18px;font-weight:600;color:var(--text-primary);white-space:nowrap}
.menu-toggle{background:none;border:none;cursor:pointer;padding:6px;display:flex;flex-direction:column;gap:5px}
.menu-toggle span{display:block;width:24px;height:2px;background-color:var(--text-primary);border-radius:2px;transition:background-color .2s}
.menu-toggle:hover span{background-color:var(--accent-blue)}

/* ── Main ───────────────────────────────── */
.site-main{flex:1;max-width:1100px;width:100%;margin:0 auto;padding:48px 20px 64px;position:relative}

/* ── Hero ───────────────────────────────── */
.tool-hero{margin-bottom:40px}
.tool-title{font-size:2rem;font-weight:700;color:var(--text-primary);margin-bottom:16px;line-height:1.2}
.tool-description{font-size:1rem;color:var(--text-secondary);max-width:680px;line-height:1.7}

/* ── Input Card ─────────────────────────── */
.tool-input-section{margin-bottom:24px}
.input-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:8px;padding:28px 28px 24px}
.input-label{display:block;font-size:.875rem;font-weight:600;color:var(--text-primary);margin-bottom:10px;text-transform:uppercase;letter-spacing:.04em}
.label-note{font-size:.75rem;font-weight:400;text-transform:none;letter-spacing:0;color:var(--text-muted)}
.input-row{display:flex;gap:10px;align-items:center}
.keyword-input{width:100%;background:var(--bg-input);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-size:1rem;font-family:var(--font-body);padding:11px 16px;outline:none;transition:border-color .2s}
.keyword-input::placeholder{color:var(--text-muted)}
.keyword-input:focus{border-color:var(--accent-blue)}
.input-options{display:flex;gap:16px;margin-top:16px;flex-wrap:wrap;align-items:flex-end}
.select-group{display:flex;flex-direction:column;gap:5px}
.select-label{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted)}
.tool-select{background:var(--bg-input);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-size:.875rem;font-family:var(--font-body);padding:7px 28px 7px 10px;outline:none;cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238b949e' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 9px center;transition:border-color .2s}
.tool-select:focus{border-color:var(--accent-blue)}
.toggle-label{display:flex;align-items:center;gap:8px;font-size:.875rem;color:var(--text-secondary);cursor:pointer;user-select:none;padding-bottom:2px}
.toggle-label input[type="checkbox"]{accent-color:var(--accent-blue);width:15px;height:15px;cursor:pointer}
.urls-textarea{width:100%;background:var(--bg-input);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-size:.9rem;font-family:var(--font-body);padding:11px 16px;outline:none;resize:vertical;min-height:110px;transition:border-color .2s;line-height:1.6}
.urls-textarea::placeholder{color:var(--text-muted)}
.urls-textarea:focus{border-color:var(--accent-blue)}
.input-hint{margin-top:10px;font-size:.8125rem;color:var(--text-muted)}
.btn-primary{background:var(--accent-blue);color:#fff;border:none;border-radius:6px;font-size:.9375rem;font-weight:600;font-family:var(--font-body);padding:11px 28px;cursor:pointer;white-space:nowrap;transition:background .2s,transform .1s}
.btn-primary:hover{background:var(--accent-blue-hover)}
.btn-primary:active{transform:scale(.98)}
.btn-primary:disabled{opacity:.5;cursor:not-allowed}
.btn-secondary{background:var(--bg-secondary);color:var(--text-secondary);border:1px solid var(--border-color);border-radius:6px;font-size:.9375rem;font-family:var(--font-body);font-weight:500;padding:11px 18px;cursor:pointer;white-space:nowrap;transition:color .2s,border-color .2s}
.btn-secondary:hover{color:var(--text-primary);border-color:var(--accent-blue)}

/* ── Error ──────────────────────────────── */
.error-banner{background:var(--error-bg);border:1px solid var(--error-text);border-radius:6px;padding:12px 18px;color:var(--error-text);font-size:.9rem;margin-bottom:24px;line-height:1.5;white-space:pre-line}

/* ── Tabs ───────────────────────────────── */
.results-section{margin-top:8px}
.results-tabs{display:flex;gap:4px;margin-bottom:20px;border-bottom:1px solid var(--border-color);overflow-x:auto;scrollbar-width:none}
.results-tabs::-webkit-scrollbar{display:none}
.tab-btn{background:none;border:none;border-bottom:2px solid transparent;color:var(--text-secondary);font-size:.9375rem;font-family:var(--font-body);font-weight:500;padding:10px 18px;cursor:pointer;margin-bottom:-1px;white-space:nowrap;transition:color .2s,border-color .2s}
.tab-btn:hover{color:var(--text-primary)}
.tab-btn.active{color:var(--accent-blue);border-bottom-color:var(--accent-blue)}
.tab-panel{display:none}
.tab-panel.active{display:block}

/* ── Panel Cards ────────────────────────── */
.panel-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:8px;padding:22px 24px;margin-bottom:16px}
.panel-card-title{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-bottom:16px}
.panel-card-note{font-size:.7rem;font-weight:400;text-transform:none;letter-spacing:0;color:var(--text-muted)}
.overview-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* ── Intent Block ───────────────────────── */
.intent-row{display:flex;align-items:flex-start;gap:10px;padding:8px 0;border-bottom:1px solid var(--border-color);font-size:.875rem}
.intent-row:last-child{border-bottom:none}
.intent-key{color:var(--text-muted);min-width:120px;flex-shrink:0;padding-top:1px}
.intent-val{color:var(--text-primary);font-weight:500}
.intent-badge{display:inline-block;font-size:.8125rem;font-weight:700;padding:2px 10px;border-radius:20px;text-transform:capitalize}
.intent-informational{background:#0d2d3f;color:#1a9fd4;border:1px solid #1a9fd455}
.intent-commercial{background:#2d220d;color:#d29922;border:1px solid #d2992255}
.intent-transactional{background:#0d2d1a;color:#3fb950;border:1px solid #3fb95055}
.intent-navigational{background:#2a1f3d;color:#a78bfa;border:1px solid #a78bfa55}
.intent-mixed{background:#1e1e2e;color:#8b949e;border:1px solid #30363d}
.wc-range-strong{color:var(--accent-blue)}
.conf-wrap{display:flex;align-items:center;gap:8px}
.conf-label{font-size:.75rem;color:var(--text-muted)}
.conf-track{width:70px;height:5px;background:var(--border-color);border-radius:3px;overflow:hidden}
.conf-fill{display:block;height:100%;background:var(--accent-blue);border-radius:3px;transition:width .4s ease}
.conf-val{font-size:.8125rem;font-weight:600;color:var(--text-primary);min-width:28px}

/* ── Pages Block ────────────────────────── */
.page-item{display:flex;align-items:center;gap:8px;padding:7px 0;border-bottom:1px solid var(--border-color);font-size:.8125rem}
.page-item:last-child{border-bottom:none}
.page-dot{width:7px;height:7px;border-radius:50%;flex-shrink:0}
.page-dot.ok{background:var(--success)}
.page-dot.err{background:var(--error-text)}
.page-url{color:var(--accent-link);text-decoration:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0}
.page-url:hover{text-decoration:underline}
.page-wc{color:var(--text-muted);flex-shrink:0;white-space:nowrap;margin-left:auto}
.page-err-msg{color:var(--error-text);font-size:.75rem;margin-left:auto;flex-shrink:0}

/* ── Outline ────────────────────────────── */
.outline-h1-wrap{background:var(--bg-secondary);border-left:3px solid var(--accent-blue);padding:10px 14px;border-radius:0 6px 6px 0;margin-bottom:14px;font-size:.9375rem;font-weight:700;color:var(--text-primary)}
.outline-section{margin-bottom:10px}
.outline-h2-row{display:flex;align-items:center;gap:8px;padding:9px 14px;background:var(--bg-secondary);border-radius:6px;margin-bottom:4px}
.outline-h2-text{font-size:.9375rem;font-weight:600;color:var(--text-primary);flex:1;min-width:0}
.freq-badge{font-size:.7rem;font-weight:700;padding:2px 7px;border-radius:10px;flex-shrink:0}
.freq-must{background:#0d2d1a;color:var(--success);border:1px solid #3fb95040}
.freq-rec{background:#2d220d;color:var(--warn);border:1px solid #d2992240}
.freq-opt{background:var(--bg-card);color:var(--text-muted);border:1px solid var(--border-color)}
.outline-h3s{padding-left:24px;display:flex;flex-direction:column;gap:2px}
.outline-h3-row{font-size:.8125rem;color:var(--text-secondary);padding:4px 0;display:flex;align-items:center;gap:6px}
.outline-h3-row::before{content:'';width:4px;height:4px;border-radius:50%;background:var(--border-color);flex-shrink:0}
.unique-item{font-size:.875rem;color:var(--text-secondary);padding:7px 0;border-bottom:1px solid var(--border-color);display:flex;align-items:center;gap:8px}
.unique-item:last-child{border-bottom:none}
.unique-item::before{content:'→';color:var(--text-muted);flex-shrink:0;font-size:.75rem}

/* ── Entities ───────────────────────────── */
.entity-cloud{display:flex;flex-wrap:wrap;gap:8px}
.entity-tag{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:5px;padding:4px 10px;font-size:.8125rem;color:var(--text-secondary);display:inline-flex;align-items:center;gap:6px}
.entity-count{background:var(--border-color);color:var(--text-muted);border-radius:10px;padding:0 6px;font-size:.7rem;font-weight:600}

/* ── FAQ Brief ──────────────────────────── */
.faq-brief-item{padding:10px 0;border-bottom:1px solid var(--border-color)}
.faq-brief-item:last-child{border-bottom:none}
.faq-brief-q{font-size:.9375rem;font-weight:600;color:var(--text-primary);display:flex;align-items:flex-start;gap:8px}
.faq-brief-qmark{font-size:.6875rem;font-weight:700;background:var(--bg-secondary);border:1px solid var(--accent-blue);color:var(--accent-blue);border-radius:4px;padding:1px 5px;flex-shrink:0;margin-top:3px}

/* ── Prompt Textarea ────────────────────── */
.prompt-textarea{width:100%;background:var(--bg-input);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-size:.8125rem;font-family:'Courier New',Courier,monospace;padding:14px 16px;outline:none;resize:vertical;line-height:1.6;min-height:320px;transition:border-color .2s}
.prompt-textarea:focus{border-color:var(--accent-blue)}
.prompt-actions{margin-top:12px;display:flex;gap:10px}

/* ── Export Row ─────────────────────────── */
.export-row{display:flex;gap:12px;flex-wrap:wrap}
.btn-export{display:inline-flex;align-items:center;gap:8px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-size:.9rem;font-family:var(--font-body);font-weight:500;padding:10px 20px;cursor:pointer;transition:border-color .2s,color .2s,background .2s}
.btn-export svg{width:16px;height:16px;flex-shrink:0}
.btn-export:hover{border-color:var(--accent-blue);color:var(--accent-blue);background:var(--bg-secondary)}

/* ── Loading ────────────────────────────── */
.loading-overlay{position:fixed;inset:0;background:rgba(13,17,23,.88);display:flex;align-items:center;justify-content:center;z-index:500;backdrop-filter:blur(4px);pointer-events:all}
.loading-overlay.hidden{pointer-events:none}
.loading-inner{text-align:center}
.loader-ring{width:48px;height:48px;border:3px solid var(--border-color);border-top-color:var(--accent-blue);border-radius:50%;animation:spin .75s linear infinite;margin:0 auto 16px}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-text{font-size:.9375rem;color:var(--text-secondary);margin-bottom:6px}
.loading-sub{font-size:.8125rem;color:var(--text-muted);min-height:18px}

/* ── Ad Slots ───────────────────────────── */
.ad-slot{width:100%;overflow:hidden;position:relative;z-index:1;pointer-events:none}
.ad-slot>*{pointer-events:auto}
.ad-slot-top{margin:0 0 24px;min-height:270px}
.ad-slot-bottom{margin:24px 0 0;min-height:100px}
.ad-slot:empty{display:none;min-height:0}

/* ── FAQ Section ────────────────────────── */
.faq-section{margin-top:64px;padding-top:40px;border-top:1px solid var(--border-color)}
.faq-heading{font-size:1.375rem;font-weight:700;color:var(--text-primary);margin-bottom:24px}
.faq-list{display:flex;flex-direction:column;gap:8px}
.faq-item{background:var(--bg-card);border:1px solid var(--border-color);border-radius:7px;overflow:hidden}
.faq-q{display:block;padding:14px 18px;font-size:.9375rem;font-weight:600;color:var(--text-primary);cursor:pointer;list-style:none;user-select:none;transition:background .15s}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{content:'+';float:right;color:var(--text-muted);font-size:1rem;font-weight:400}
.faq-item[open] .faq-q{background:var(--bg-secondary)}
.faq-item[open] .faq-q::after{content:'\2212'}
.faq-a{padding:0 18px 16px;font-size:.875rem;color:var(--text-secondary);line-height:1.7}

/* ── Footer ─────────────────────────────── */
.site-footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);margin-top:auto}
.footer-inner{max-width:1100px;margin:0 auto;padding:48px 20px 40px;display:grid;grid-template-columns:1.4fr 1fr;gap:48px}
.footer-title{font-size:1.25rem;font-weight:700;color:var(--text-primary);margin-bottom:16px}
.footer-desc{font-size:.9375rem;color:var(--text-secondary);line-height:1.7;max-width:400px}
.footer-links-title{font-size:1rem;font-weight:700;color:var(--text-primary);margin-bottom:16px}
.footer-links ul{list-style:none}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:.9375rem;color:var(--text-secondary);text-decoration:none;transition:color .2s}
.footer-links a:hover{color:var(--text-primary)}
.footer-link-accent{color:var(--accent-link)!important}
.footer-bottom{border-top:1px solid var(--border-color);max-width:1100px;margin:0 auto;padding:18px 20px}
.footer-bottom p{font-size:.875rem;color:var(--text-muted);text-align:center}
.heart{color:#e05252}
.footer-dev-link{color:var(--accent-link);text-decoration:none}
.footer-dev-link:hover{text-decoration:underline}

/* ── Focus ──────────────────────────────── */
.btn-primary:focus-visible,.btn-secondary:focus-visible,.btn-export:focus-visible,.tab-btn:focus-visible,.tool-select:focus-visible{outline:2px solid var(--accent-blue);outline-offset:2px}

/* ── Utility ────────────────────────────── */
.hidden{display:none!important}

/* ── Responsive ─────────────────────────── */
@media(max-width:700px){
  .tool-title{font-size:1.5rem}
  .input-row{flex-direction:column;align-items:stretch}
  .btn-primary,.btn-secondary{width:100%;justify-content:center;text-align:center}
  .input-options{flex-direction:column;gap:12px}
  .overview-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:32px}
  .export-row{flex-direction:column}
  .btn-export{justify-content:center}
  .tab-btn{padding:10px 12px;font-size:.875rem}
  .prompt-textarea{font-size:.75rem}
}