*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#e879f9;--secondary:#a78bfa;
  --bg:#0f0f14;--bg-surface:#18181f;--bg-card:#1e1e28;
  --border:rgba(255,255,255,.08);--border-hover:rgba(232,121,249,.3);
  --text:#e8e8f0;--text-muted:#8888a8;--text-faint:#555570;
  --radius-sm:8px;--radius-md:14px;--radius-lg:20px;
  --transition:.2s cubic-bezier(.4,0,.2,1);
  --match-bg:rgba(232,121,249,.22);--match-border:rgba(232,121,249,.5);
  --group1:#fbbf24;--group2:#34d399;--group3:#60a5fa;--group4:#f87171
}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;min-height:100vh}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}

/* ── HEADER ── */
.site-header{position:sticky;top:0;z-index:100;background:rgba(15,15,20,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;gap:24px;height:64px;width:100%;max-width:1280px;margin-inline:auto;padding-inline:clamp(16px,4vw,48px)}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:36px;height:36px}
.logo-text{font-size:1.1rem;font-weight:700;letter-spacing:-.02em;background:linear-gradient(135deg,#fff 40%,var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{padding:6px 14px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:500;color:var(--text-muted);transition:all var(--transition)}
.nav-link:hover,.nav-link.active{color:var(--text);background:rgba(255,255,255,.06)}

/* ── LAYOUT ── */
.main-wrap{width:100%;max-width:1280px;margin-inline:auto;padding:clamp(16px,2.5vw,36px) clamp(16px,4vw,48px) clamp(40px,6vw,80px)}

/* ── HERO ── */
.tool-hero{text-align:center;padding:clamp(14px,2.5vw,32px) 0 clamp(18px,2.5vw,28px)}
.tool-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 14px;border-radius:999px;font-size:.75rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;background:rgba(232,121,249,.1);border:1px solid rgba(232,121,249,.25);color:#f0abfc;margin-bottom:14px}
.tool-title{font-size:clamp(2rem,5vw,3rem);font-weight:900;letter-spacing:-.04em;line-height:1.1;margin-bottom:8px}
.gradient-title{background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.tool-subtitle{font-size:clamp(.9rem,2vw,1.05rem);color:var(--text-muted);max-width:560px;margin:0 auto}

/* ── REGEX INPUT ROW ── */
.regex-input-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px 20px;margin-bottom:12px;transition:border-color var(--transition)}
.regex-input-card:focus-within{border-color:var(--border-hover)}
.regex-row{display:flex;align-items:center;gap:0}
.regex-slash{font-family:'Fira Code',monospace;font-size:1.4rem;font-weight:700;color:var(--primary);padding:0 4px;flex-shrink:0;line-height:1}
.regex-pattern{flex:1;background:transparent;border:none;outline:none;font-family:'Fira Code',monospace;font-size:1.1rem;color:var(--text);line-height:1.5;min-width:0;padding:2px 4px}
.regex-pattern::placeholder{color:var(--text-faint)}
.regex-flags{display:flex;gap:3px;flex-shrink:0;margin-left:8px}
.flag-btn{width:26px;height:26px;border-radius:6px;font-family:'Fira Code',monospace;font-size:.82rem;font-weight:700;color:var(--text-faint);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;transition:all var(--transition);cursor:pointer}
.flag-btn.active{background:rgba(232,121,249,.15);color:var(--primary);border-color:rgba(232,121,249,.4)}
.flag-btn:hover:not(.active){border-color:rgba(255,255,255,.18);color:var(--text)}
.regex-error{font-size:.8rem;color:#f87171;margin-top:8px;font-family:'Fira Code',monospace;display:flex;align-items:center;gap:6px}

/* Replace row */
.replace-row{display:flex;align-items:center;gap:10px;margin-top:12px;padding-top:12px;border-top:1px solid var(--border)}
.replace-label{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint);flex-shrink:0}
.replace-input{flex:1;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:7px 12px;color:var(--text);font-family:'Fira Code',monospace;font-size:.88rem;outline:none;transition:border-color var(--transition)}
.replace-input:focus{border-color:var(--primary)}
.replace-input::placeholder{color:var(--text-faint)}

/* ── TEST STRING PANE ── */
.test-pane{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;margin-bottom:12px;transition:border-color var(--transition)}
.test-pane:focus-within{border-color:var(--border-hover)}
.pane-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid var(--border);background:rgba(0,0,0,.15);gap:8px;flex-wrap:wrap}
.pane-title{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--text-faint);display:flex;align-items:center;gap:6px}
.pane-actions{display:flex;gap:5px}
.pane-btn{padding:4px 10px;border-radius:6px;font-size:.75rem;font-weight:700;color:var(--text-muted);border:1px solid var(--border);transition:all var(--transition)}
.pane-btn:hover{color:var(--primary);border-color:var(--border-hover);background:rgba(232,121,249,.06)}
.test-textarea{width:100%;min-height:180px;max-height:50vh;background:transparent;border:none;padding:16px;color:var(--text);font-family:'Fira Code','JetBrains Mono',monospace;font-size:.88rem;line-height:1.9;resize:vertical;outline:none;tab-size:2}
.test-textarea::placeholder{color:var(--text-faint)}

/* ── HIGHLIGHT OVERLAY ── */
.highlight-wrap{position:relative}
.highlight-output{position:absolute;inset:0;padding:16px;font-family:'Fira Code','JetBrains Mono',monospace;font-size:.88rem;line-height:1.9;pointer-events:none;overflow:hidden;white-space:pre-wrap;word-break:break-word;color:transparent}
.test-textarea{position:relative;z-index:1;background:transparent;color:var(--text);caret-color:var(--text)}
mark.m0{background:var(--match-bg);border-bottom:2px solid var(--match-border);border-radius:2px;color:inherit}
mark.g1{background:rgba(251,191,36,.18);border-bottom:2px solid var(--group1);border-radius:2px;color:inherit}
mark.g2{background:rgba(52,211,153,.18);border-bottom:2px solid var(--group2);border-radius:2px;color:inherit}
mark.g3{background:rgba(96,165,250,.18);border-bottom:2px solid var(--group3);border-radius:2px;color:inherit}
mark.g4{background:rgba(248,113,113,.18);border-bottom:2px solid var(--group4);border-radius:2px;color:inherit}

/* ── STATS BAR ── */
.stats-bar{display:flex;flex-wrap:wrap;gap:8px;padding:10px 14px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);margin-bottom:12px}
.stat-item{display:flex;align-items:center;gap:6px;padding:4px 10px;background:rgba(255,255,255,.04);border-radius:999px;border:1px solid var(--border)}
.stat-label{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint)}
.stat-value{font-size:.78rem;font-weight:700;color:var(--primary)}
.stat-value.zero{color:var(--text-faint)}
.stat-value.has-match{color:#6ee7b7}

/* ── MATCH LIST ── */
.matches-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;margin-bottom:12px}
.match-item{padding:10px 16px;border-bottom:1px solid rgba(255,255,255,.04);display:flex;align-items:flex-start;gap:12px}
.match-item:last-child{border-bottom:none}
.match-idx{font-size:.72rem;font-weight:800;color:var(--primary);min-width:22px;margin-top:2px}
.match-val{font-family:'Fira Code',monospace;font-size:.85rem;color:var(--text);background:var(--match-bg);border:1px solid var(--match-border);border-radius:5px;padding:2px 8px;word-break:break-all}
.match-pos{font-size:.72rem;color:var(--text-faint);margin-top:4px}
.match-groups{display:flex;flex-wrap:wrap;gap:5px;margin-top:6px}
.group-pill{font-family:'Fira Code',monospace;font-size:.72rem;padding:2px 8px;border-radius:999px;border:1px solid}
.group-pill.g1{background:rgba(251,191,36,.12);border-color:rgba(251,191,36,.35);color:var(--group1)}
.group-pill.g2{background:rgba(52,211,153,.12);border-color:rgba(52,211,153,.35);color:var(--group2)}
.group-pill.g3{background:rgba(96,165,250,.12);border-color:rgba(96,165,250,.35);color:var(--group3)}
.group-pill.g4{background:rgba(248,113,113,.12);border-color:rgba(248,113,113,.35);color:var(--group4)}

/* ── REPLACE OUTPUT ── */
.replace-output-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;margin-bottom:12px}
.replace-pre{padding:16px;font-family:'Fira Code',monospace;font-size:.88rem;line-height:1.9;white-space:pre-wrap;word-break:break-word;color:var(--text);min-height:80px}

/* ── CHEATSHEET GRID ── */
.cheat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.cheat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:18px;transition:border-color var(--transition)}
.cheat-card:hover{border-color:var(--border-hover)}
.cheat-title{font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:.07em;color:var(--primary);margin-bottom:10px}
.cheat-rows{display:flex;flex-direction:column;gap:6px}
.cheat-row{display:flex;align-items:baseline;gap:10px}
.cheat-token{font-family:'Fira Code',monospace;font-size:.82rem;color:var(--primary);min-width:80px;flex-shrink:0}
.cheat-desc{font-size:.78rem;color:var(--text-muted)}

/* ── SNIPPET LIBRARY ── */
.snippets-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}
.snippet-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:16px;cursor:pointer;transition:border-color var(--transition)}
.snippet-card:hover{border-color:var(--border-hover)}
.snippet-name{font-size:.9rem;font-weight:700;margin-bottom:6px}
.snippet-pattern{font-family:'Fira Code',monospace;font-size:.78rem;color:var(--primary);background:rgba(232,121,249,.07);border:1px solid rgba(232,121,249,.15);border-radius:5px;padding:5px 10px;margin-bottom:6px;word-break:break-all}
.snippet-desc{font-size:.75rem;color:var(--text-faint)}
.snippet-use{font-size:.72rem;font-weight:700;color:var(--primary);margin-top:8px;display:inline-block}

/* ── PAGE SECTIONS ── */
.page-section{padding:clamp(20px,3vw,40px) 0}
.section-head{text-align:center;margin-bottom:28px}
.section-title{font-size:clamp(1.3rem,3vw,1.8rem);font-weight:800;letter-spacing:-.02em;margin-bottom:8px}
.section-desc{font-size:.92rem;color:var(--text-muted);max-width:580px;margin:0 auto}
.section-divider{height:1px;background:var(--border);margin:0}

.steps-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.step-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:20px;transition:border-color var(--transition)}
.step-card:hover{border-color:var(--border-hover)}
.step-number{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.9rem;color:#0f0f14;margin-bottom:12px}
.step-title{font-size:.95rem;font-weight:700;margin-bottom:6px}
.step-desc{font-size:.82rem;color:var(--text-muted);line-height:1.6}

.features-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:20px;transition:border-color var(--transition)}
.feature-card:hover{border-color:var(--border-hover)}
.feature-icon{font-size:1.5rem;margin-bottom:10px}
.feature-title{font-size:.92rem;font-weight:700;margin-bottom:6px}
.feature-desc{font-size:.8rem;color:var(--text-muted);line-height:1.6}

.faq-list{display:flex;flex-direction:column;gap:8px;max-width:800px;margin-inline:auto}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden;transition:border-color var(--transition)}
.faq-item:hover{border-color:var(--border-hover)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;padding:16px 20px;font-size:.92rem;font-weight:700;color:var(--text);text-align:left;gap:12px;cursor:pointer;background:none}
.faq-icon{font-size:1.2rem;font-weight:400;color:var(--primary);flex-shrink:0;transition:transform var(--transition)}
.faq-a{display:none;padding:0 20px 16px;font-size:.87rem;color:var(--text-muted);line-height:1.7}
.faq-a p{margin:0}.faq-a code{background:rgba(232,121,249,.1);color:var(--primary);padding:1px 6px;border-radius:4px;font-size:.85em}
.faq-item.open .faq-a{display:block}
.faq-item.open .faq-icon{transform:rotate(45deg)}

.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.related-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:16px;text-decoration:none;transition:border-color var(--transition);display:block}
.related-card:hover{border-color:var(--border-hover)}
.related-icon{width:36px;height:36px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.related-icon svg{width:18px;height:18px;stroke:#fff}
.related-name{font-size:.9rem;font-weight:700;color:var(--text);margin-bottom:4px}
.related-desc{font-size:.8rem;color:var(--text-faint);margin-bottom:8px}
.related-link{font-size:.78rem;font-weight:700;color:var(--primary)}

.ad-slot{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);min-height:90px;display:flex;align-items:center;justify-content:center}
.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(20px);background:rgba(30,30,40,.95);backdrop-filter:blur(12px);color:var(--text);padding:10px 22px;border-radius:999px;font-size:.85rem;font-weight:600;pointer-events:none;opacity:0;transition:all .25s;border:1px solid var(--border);z-index:999;white-space:nowrap}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

.site-footer{background:var(--bg-card);border-top:1px solid var(--border);padding:clamp(32px,4vw,56px) clamp(16px,4vw,48px) 24px}
.footer-grid{max-width:1280px;margin-inline:auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand-text{font-size:.85rem;color:var(--text-faint);margin-top:8px;line-height:1.6;max-width:280px}
.footer-heading{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-faint);margin-bottom:12px}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links a{font-size:.87rem;color:var(--text-muted);transition:color var(--transition)}
.footer-links a:hover{color:var(--text)}
.footer-bottom{max-width:1280px;margin-inline:auto;padding-top:20px;border-top:1px solid var(--border);display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:.8rem;color:var(--text-faint)}

@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.footer-grid{grid-template-columns:1fr}}