/* ===== Design tokens ===== */
:root{
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --surface-2:#EEF1F8;
  --ink:#101728;
  --muted:#5B6472;
  --line:#E3E7F0;
  --accent:#1F8FE0;
  --accent-2:#6C5CE7;
  --accent-ink:#FFFFFF;
  --taken:#E0574B;
  --available:#1EA672;
  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:22px;
  --shadow-sm:0 1px 2px rgba(16,23,40,.06);
  --shadow-md:0 12px 32px -12px rgba(16,23,40,.18);
  --font-display:'Outfit',sans-serif;
  --font-body:'Inter',sans-serif;
}
[data-theme="dark"]{
  --bg:#0D121E;
  --surface:#151C2C;
  --surface-2:#1B2436;
  --ink:#E9EDF6;
  --muted:#96A0B5;
  --line:#293349;
  --accent:#4FA8EB;
  --accent-2:#8B7CF0;
  --shadow-md:0 20px 40px -16px rgba(0,0,0,.55);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  overflow-x:hidden;
  transition:background .25s ease, color .25s ease;
}
h1,h2,h3,h4{font-family:var(--font-display);margin:0 0 .5em;line-height:1.15;letter-spacing:-.01em}
p{margin:0 0 1em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}
.container.narrow{max-width:760px}
.skip-link{position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;z-index:200}
.skip-link:focus{left:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media(prefers-reduced-motion:reduce){*{animation-duration:.001ms !important;transition-duration:.001ms !important}}

.eyebrow{font-family:var(--font-display);font-size:.8rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin:0 0 .6em}
.eyebrow.center,.section-title.center{text-align:center}
.section-title{font-size:clamp(1.5rem,3vw,2.1rem)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:999px;border:1px solid transparent;font-family:var(--font-display);font-weight:600;font-size:.95rem;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .2s ease,opacity .2s ease}
.btn:active{transform:translateY(1px)}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{box-shadow:var(--shadow-md)}
.btn-ghost{background:var(--surface-2);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--line)}
.btn-ghost-inverse{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost-inverse:hover{background:rgba(255,255,255,.12)}
.btn-block{width:100%}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:100;background:color-mix(in srgb, var(--bg) 88%, transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{max-width:1160px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:1.05rem;color:var(--ink);flex-shrink:0}
.brand-mark{color:var(--accent);display:flex}
.main-nav{flex:1;min-width:0}
.main-nav>ul{list-style:none;display:flex;gap:6px;margin:0;padding:0}
.main-nav>ul>li>a,.mega-trigger{display:flex;align-items:center;gap:5px;padding:10px 12px;border-radius:8px;font-weight:500;font-size:.94rem;color:var(--ink);background:none;border:none;font-family:var(--font-body);cursor:pointer}
.main-nav>ul>li>a:hover,.mega-trigger:hover{background:var(--surface-2)}
.has-mega{position:relative}
.mega-panel{
  position:absolute;top:100%;left:0;
  display:grid;grid-template-columns:repeat(4,180px);gap:22px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:22px;box-shadow:var(--shadow-md);
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
  z-index:50;
}
.has-mega.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:.7em}
.mega-col a{display:block;padding:6px 0;font-size:.9rem;color:var(--ink)}
.mega-col a:hover{color:var(--accent)}

.header-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}
.icon-btn{width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--ink);display:flex;align-items:center;justify-content:center;cursor:pointer}
.icon-btn:hover{background:var(--surface-2)}
.icon-moon{display:none}
[data-theme="dark"] .icon-sun{display:none}
[data-theme="dark"] .icon-moon{display:block}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:4px;width:38px;height:38px;border-radius:8px;border:1px solid var(--line);background:var(--surface);cursor:pointer}
.nav-toggle span{width:18px;height:2px;background:var(--ink);margin:0 auto;transition:transform .2s ease,opacity .2s ease}

/* ===== Breadcrumb ===== */
.breadcrumb{padding:14px 0;border-bottom:1px solid var(--line)}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;font-size:.85rem;color:var(--muted)}
.breadcrumb li:not(:last-child)::after{content:"/";margin-left:6px;color:var(--muted)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb li[aria-current]{color:var(--ink);font-weight:500}

/* ===== Hero ===== */
.hero{padding:60px 0 70px}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:start}
.hero h1{font-size:clamp(1.9rem,3.6vw,2.7rem)}
.hero-sub{color:var(--muted);font-size:1.05rem;max-width:46ch}
.hero-points{list-style:none;padding:0;margin:1.4em 0 0;display:flex;flex-direction:column;gap:10px}
.hero-points li{position:relative;padding-left:26px;font-size:.95rem;color:var(--ink)}
.hero-points li::before{content:"";position:absolute;left:0;top:5px;width:16px;height:16px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2))}

.tool-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow-md)}
.tool-tabs{display:flex;gap:4px;background:var(--surface-2);padding:4px;border-radius:999px;margin-bottom:18px}
.tool-tab{flex:1;padding:9px 12px;border:none;border-radius:999px;background:none;font-family:var(--font-display);font-weight:600;font-size:.88rem;color:var(--muted);cursor:pointer;transition:background .18s ease,color .18s ease}
.tool-tab.is-active{background:var(--surface);color:var(--ink);box-shadow:var(--shadow-sm)}
.tool-panel{display:none}
.tool-panel.is-active{display:block}
.field-label{display:block;font-size:.82rem;font-weight:600;color:var(--muted);margin-bottom:8px}
.compose-bar{display:flex;align-items:center;gap:8px;background:var(--surface-2);border:1px solid var(--line);border-radius:999px;padding:6px 6px 6px 18px}
.compose-bar:focus-within{border-color:var(--accent)}
.at-sign{color:var(--muted);font-weight:600}
.compose-bar input{flex:1;min-width:0;background:none;border:none;font-size:1rem;color:var(--ink);padding:10px 0;font-family:var(--font-body)}
.compose-bar input:focus{outline:none}
.send-btn{width:42px;height:42px;flex-shrink:0;border-radius:50%;border:none;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;position:relative;transition:transform .5s cubic-bezier(.5,0,.2,1)}
.send-btn .spinner-icon{display:none;position:absolute;animation:spin 1s linear infinite}
.send-btn.is-loading .send-icon{opacity:0}
.send-btn.is-loading .spinner-icon{display:block}
.send-btn.is-sending{transform:translate(140px,-70px) rotate(35deg) scale(.7);opacity:0}
@keyframes spin{to{transform:rotate(360deg)}}
textarea#bulk-input{width:100%;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px;font-family:var(--font-body);font-size:.95rem;color:var(--ink);resize:vertical}
textarea#bulk-input:focus{outline:none;border-color:var(--accent)}
.field-hint{font-size:.78rem;color:var(--muted);margin:10px 2px 0}
.field-error{font-size:.8rem;color:var(--taken);margin:8px 2px 0;min-height:1em}
#bulk-submit-btn{margin-top:14px;position:relative}
#bulk-submit-btn .spinner-icon{display:none;animation:spin 1s linear infinite}
#bulk-submit-btn.is-loading .btn-label{opacity:.5}
#bulk-submit-btn.is-loading .spinner-icon{display:block}
.tool-security{display:flex;align-items:center;gap:6px;font-size:.76rem;color:var(--muted);margin:16px 2px 0}

/* ===== Results ===== */
.results-section{padding:20px 0 60px;scroll-margin-top:90px}
.results-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:18px}
.results-header h2{margin:0}
.results-actions{display:flex;gap:8px}
.results-list{display:flex;flex-direction:column;gap:10px}
.result-bubble{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:14px 16px;box-shadow:var(--shadow-sm);animation:pop .3s ease}
@keyframes pop{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
.result-avatar{width:38px;height:38px;border-radius:50%;background:var(--surface-2);display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:700;color:var(--muted);flex-shrink:0}
.result-body{flex:1;min-width:0}
.result-name{font-weight:600;font-size:.95rem}
.result-name span{color:var(--muted);font-weight:400}
.result-meta{font-size:.82rem;color:var(--muted)}
.result-badge{flex-shrink:0;padding:6px 12px;border-radius:999px;font-size:.78rem;font-weight:700;font-family:var(--font-display)}
.result-badge.taken{background:color-mix(in srgb, var(--taken) 16%, transparent);color:var(--taken)}
.result-badge.available{background:color-mix(in srgb, var(--available) 16%, transparent);color:var(--available)}
.result-badge.invalid{background:var(--surface-2);color:var(--muted)}
.result-badge.error{background:color-mix(in srgb, var(--taken) 10%, transparent);color:var(--taken)}

/* ===== Tools strip ===== */
.tools-strip{padding:36px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface-2)}
.strip-title{font-size:1rem;color:var(--muted);margin-bottom:16px}
.strip-scroll{display:flex;flex-wrap:wrap;gap:10px}
.chip{padding:9px 16px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-size:.85rem}
.chip:hover{border-color:var(--accent);color:var(--accent)}

/* ===== Features ===== */
.features{padding:80px 0}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.feature-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:24px}
.feature-icon{width:44px;height:44px;border-radius:12px;background:var(--surface-2);color:var(--accent);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.feature-card h3{font-size:1.05rem}
.feature-card p{color:var(--muted);font-size:.92rem;margin:0}

/* ===== How it works ===== */
.how-it-works{padding:80px 0;background:var(--surface-2)}
.steps{list-style:none;margin:36px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:none}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:22px}
.step-num{display:inline-flex;width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:700;font-size:.85rem;margin-bottom:12px}
.step h3{font-size:1rem}
.step p{color:var(--muted);font-size:.9rem;margin:0}

/* ===== SEO copy ===== */
.seo-copy{padding:80px 0}
.seo-copy h2{font-size:1.4rem}
.seo-copy p{color:var(--muted)}

/* ===== FAQ ===== */
.faq{padding:80px 0;background:var(--surface-2)}
.accordion{margin-top:30px;display:flex;flex-direction:column;gap:10px}
.accordion-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden}
.accordion-trigger{width:100%;text-align:left;padding:18px 20px;background:none;border:none;font-family:var(--font-display);font-weight:600;font-size:.98rem;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:12px;cursor:pointer}
.chev{flex-shrink:0;transition:transform .2s ease}
.accordion-trigger[aria-expanded="true"] .chev{transform:rotate(180deg)}
.accordion-panel{max-height:0;overflow:hidden;transition:max-height .25s ease}
.accordion-panel p{padding:0 20px 18px;color:var(--muted);margin:0;font-size:.92rem}

/* ===== CTA ===== */
.cta{padding:80px 0;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff}
.cta-inner{text-align:center;max-width:640px}
.cta h2{color:#fff}
.cta p{color:rgba(255,255,255,.9)}
.cta-buttons{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:20px}

/* ===== Footer ===== */
.site-footer{padding:60px 0 30px;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(5,1fr);gap:24px}
.footer-brand p{color:var(--muted);font-size:.85rem;margin-top:10px}
.footer-col h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:12px}
.footer-col a{display:block;padding:5px 0;font-size:.85rem;color:var(--ink)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);font-size:.78rem;color:var(--muted)}
.footer-bottom .disclaimer{margin-top:8px;max-width:80ch}

/* ===== Cookie banner ===== */
.cookie-banner{position:fixed;left:16px;right:16px;bottom:16px;max-width:560px;margin:0 auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:18px;box-shadow:var(--shadow-md);z-index:200;display:flex;flex-direction:column;gap:14px}
.cookie-banner[hidden]{display:none}
.cookie-banner p{margin:0;font-size:.86rem;color:var(--muted)}
.cookie-banner a{color:var(--accent);text-decoration:underline}
.cookie-actions{display:flex;gap:10px;justify-content:flex-end}

/* ===== Responsive ===== */
@media(max-width:960px){
  .hero-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:760px){
  .main-nav{position:fixed;top:65px;left:0;right:0;bottom:0;background:var(--bg);padding:20px;transform:translateX(100%);transition:transform .25s ease;overflow-y:auto}
  .main-nav.is-open{transform:translateX(0)}
  .main-nav>ul{flex-direction:column;gap:2px}
  .main-nav>ul>li>a,.mega-trigger{width:100%;justify-content:space-between}
  .mega-panel{position:static;grid-template-columns:1fr;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;padding:6px 0 6px 12px;display:none}
  .has-mega.is-open .mega-panel{display:grid}
  .nav-toggle{display:flex}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
}
@media(max-width:520px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .cookie-actions{justify-content:stretch}
  .cookie-actions .btn{flex:1}
  .results-actions{width:100%}
  .results-actions .btn{flex:1}
}