/* MathSolver - Free Math Calculators & Solvers */
:root {
    --primary: #0284c7;
    --primary-light: #0284c7cc;
    --accent: #facc15;
    --bg: #0a1628;
    --bg-card: #122040;
    --bg-hover: #122040ee;
    --text: #f1f5f9;
    --text-secondary: #94a3b8;
    --border: #122040aa;
    --radius: 12px;
    --gradient: linear-gradient(135deg,#0284c7,#0ea5e9,#38bdf8);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
a{color:var(--primary-light);text-decoration:none}a:hover{color:var(--accent)}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
header{position:sticky;top:0;z-index:100;background:rgba(0,0,0,0.85);backdrop-filter:blur(20px);border-bottom:1px solid var(--border)}
header nav{display:flex;align-items:center;justify-content:space-between;padding:14px 24px}
.logo{display:flex;align-items:center;gap:8px;font-size:1.3rem;font-weight:700;color:var(--text)}
.logo .accent{color:var(--accent)}
.nav-links{display:flex;list-style:none;gap:24px}.nav-links a{color:var(--text-secondary);font-weight:500}.nav-links a:hover{color:var(--text)}
.hero{text-align:center;padding:60px 24px 40px;background:radial-gradient(ellipse at 50% 0%,#0284c722,transparent 60%)}
.hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;margin-bottom:12px}
.gradient-text{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-subtitle{color:var(--text-secondary);max-width:600px;margin:0 auto 24px;font-size:1.05rem}
.search-bar{max-width:500px;margin:0 auto}.search-bar input{width:100%;padding:12px 20px;border:2px solid var(--border);border-radius:50px;background:var(--bg-card);color:var(--text);font-size:1rem;outline:none}.search-bar input:focus{border-color:var(--primary)}
.section-title{font-size:1.6rem;font-weight:700;margin:32px 0;text-align:center}
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;padding-bottom:40px}
.tool-card{display:block;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:all 0.3s;position:relative;overflow:hidden}
.tool-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient);opacity:0;transition:opacity 0.3s}
.tool-card:hover{border-color:var(--primary);transform:translateY(-3px);box-shadow:0 8px 30px rgba(0,0,0,0.3)}.tool-card:hover::before{opacity:1}
.tool-icon{font-size:2rem;margin-bottom:10px}.tool-card h3{font-size:1.05rem;margin-bottom:6px}.tool-card p{font-size:0.85rem;color:var(--text-secondary);line-height:1.5}
.tool-card.hidden{display:none}
.features-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px;margin-top:24px}
.feature{text-align:center;padding:24px;background:var(--bg-card);border-radius:var(--radius);border:1px solid var(--border)}
.feature-icon{font-size:2rem;margin-bottom:12px}.feature h3{font-size:1rem;margin-bottom:6px}.feature p{font-size:0.85rem;color:var(--text-secondary)}
.ad-container{min-height:80px;margin:16px auto;display:flex;align-items:center;justify-content:center}
footer{margin-top:40px;border-top:1px solid var(--border);padding:30px 0 16px}
.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:24px;margin-bottom:24px}
.footer-col h4{font-size:0.95rem;margin-bottom:12px}.footer-col p,.footer-col a{font-size:0.85rem;color:var(--text-secondary)}.footer-col ul{list-style:none}.footer-col li{margin-bottom:6px}
.footer-bottom{text-align:center;padding-top:16px;border-top:1px solid var(--border);color:var(--text-secondary);font-size:0.8rem}
.legal-page,.tool-page{max-width:800px;margin:40px auto;padding:0 24px}.legal-page h1{font-size:1.8rem;margin-bottom:20px}.legal-page h2{font-size:1.2rem;margin:24px 0 10px}.legal-page p{color:var(--text-secondary);line-height:1.7;margin-bottom:10px}
.content-section{margin-top:32px;padding-top:32px;border-top:1px solid var(--border)}.content-section h2{font-size:1.3rem;margin:20px 0 10px}.content-section p{color:var(--text-secondary);line-height:1.7;margin-bottom:10px}.content-section ul{color:var(--text-secondary);padding-left:20px;margin-bottom:10px}.content-section li{margin-bottom:4px}
.cta-box{margin:32px 0;padding:24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);text-align:center}
.cta-btn{display:inline-block;padding:12px 32px;border-radius:8px;color:white;font-weight:600;background:var(--gradient);text-decoration:none}
@media(max-width:768px){.nav-links{display:none}.tools-grid{grid-template-columns:1fr}.features-grid{grid-template-columns:1fr 1fr}}