/* acides_bases.css */
@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Source+Sans+3:wght@200;300;400;600;700&family=Fira+Code:wght@300;400&display=swap');
:root{--void:#080410;--acid-bg:#180408;--base-bg:#020c18;--acid:#ff2244;--acid-dim:rgba(255,34,68,0.1);--base:#1a88ff;--base-dim:rgba(26,136,255,0.1);--text:#7060a0;--text-bright:#c0b0e0;--border:rgba(150,120,200,0.15);--white:#f0ecff;}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
body{font-family:'Source Sans 3',sans-serif;background:var(--void);color:var(--text);min-height:100vh;overflow-x:hidden;}
#ab-canvas{position:fixed;inset:0;z-index:0;pointer-events:none;}
.wrap{position:relative;z-index:2;max-width:1040px;margin:0 auto;padding:0 28px 90px;}
.hero{padding:68px 0 52px;border-bottom:1px solid var(--border);margin-bottom:52px;}
.hero-tag{font-size:0.58rem;letter-spacing:5px;text-transform:uppercase;color:rgba(150,120,200,0.6);margin-bottom:14px;font-weight:600;}
.hero h1{font-family:'Bebas Neue',sans-serif;font-size:clamp(5rem,14vw,10rem);line-height:0.85;letter-spacing:2px;background:linear-gradient(90deg,var(--acid) 0%,#aa44cc 50%,var(--base) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
.hero h1 em{display:block;font-size:0.22em;font-style:normal;font-weight:300;letter-spacing:6px;-webkit-text-fill-color:rgba(150,120,200,0.4);color:rgba(150,120,200,0.4);margin-top:12px;font-family:'Fira Code',monospace;text-transform:uppercase;}
.hero-desc{font-size:0.96rem;line-height:1.87;color:var(--text);font-weight:300;margin-top:16px;max-width:580px;}
/* Split panels */
.split{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:52px;}
.split-acid{background:var(--acid-bg);border:1px solid rgba(255,34,68,0.25);border-top:3px solid var(--acid);border-radius:4px;padding:24px;}
.split-base{background:var(--base-bg);border:1px solid rgba(26,136,255,0.25);border-top:3px solid var(--base);border-radius:4px;padding:24px;}
.sp-title{font-family:'Bebas Neue',sans-serif;font-size:1.6rem;letter-spacing:2px;margin-bottom:14px;}
.split-acid .sp-title{color:var(--acid);}
.split-base .sp-title{color:var(--base);}
.sp-eq{font-family:'Fira Code',monospace;font-size:0.82rem;padding:10px 14px;border-radius:3px;margin-bottom:12px;}
.split-acid .sp-eq{background:var(--acid-dim);color:rgba(255,100,130,0.8);}
.split-base .sp-eq{background:var(--base-dim);color:rgba(80,160,255,0.8);}
.sp-list li{font-size:0.82rem;color:var(--text);line-height:1.7;list-style:none;padding-left:14px;position:relative;}
.sp-list li::before{content:'·';position:absolute;left:0;color:var(--text);}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(145px,1fr));border:1px solid var(--border);overflow:hidden;margin-bottom:52px;}
.stat{padding:16px 12px;background:#0a0614;border-right:1px solid var(--border);transition:background 0.2s;}.stat:last-child{border-right:none;}
.s-label{font-family:'Fira Code',monospace;font-size:0.52rem;letter-spacing:2px;text-transform:uppercase;color:rgba(150,120,200,0.55);margin-bottom:6px;}
.s-value{font-size:1rem;font-weight:700;color:var(--white);line-height:1.1;}
.s-unit{font-size:0.6rem;color:rgba(100,80,150,0.5);}
.section{margin-bottom:50px;opacity:0;transform:translateY(16px);transition:opacity 0.65s,transform 0.65s;}.section.visible{opacity:1;transform:none;}
.sh{display:flex;align-items:baseline;gap:14px;margin-bottom:18px;padding-bottom:12px;border-bottom:1px solid var(--border);}
.sn{font-family:'Fira Code',monospace;font-size:0.55rem;letter-spacing:3px;color:rgba(150,120,200,0.4);}
.section h2{font-family:'Bebas Neue',sans-serif;font-size:1.5rem;color:var(--white);letter-spacing:2px;}
p{font-size:0.95rem;line-height:1.87;color:var(--text);font-weight:300;margin-bottom:14px;}
strong{color:var(--text-bright);font-weight:700;}
.theories-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px;margin-top:16px;}
.th-card{background:#0a0614;border:1px solid var(--border);padding:18px;border-radius:3px;transition:background 0.2s;}.th-card:hover{background:#120820;}
.th-card h3{font-size:0.82rem;font-weight:700;color:var(--white);margin-bottom:6px;}
.th-card p{font-size:0.78rem;margin:0;line-height:1.55;}
.ka-table{width:100%;border-collapse:collapse;margin-top:16px;font-size:0.82rem;}
.ka-table th{font-family:'Fira Code',monospace;font-size:0.52rem;letter-spacing:2px;text-transform:uppercase;color:rgba(150,120,200,0.5);border-bottom:1px solid var(--border);padding:8px 12px;text-align:left;}
.ka-table td{padding:9px 12px;border-bottom:1px solid rgba(150,120,200,0.06);color:var(--text);}
.ka-table td:first-child{color:var(--white);font-weight:600;}
.ka-table td:last-child{font-family:'Fira Code',monospace;color:var(--acid);}
.ka-table tr:hover td{background:rgba(150,120,200,0.04);}
.footer-band{margin-top:70px;border-top:1px solid var(--border);padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;}
.footer-band span{font-family:'Fira Code',monospace;font-size:0.5rem;letter-spacing:2px;color:rgba(100,80,150,0.4);text-transform:uppercase;}
@media(max-width:640px){.split{grid-template-columns:1fr;}}