/* Mahadev Book — Design tokens (premium betting aesthetic: charcoal + gold) */
:root{
  --radius:.625rem;
  --background:oklch(0.17 0.02 250);
  --foreground:oklch(0.97 0.01 90);
  --card:oklch(0.22 0.02 250);
  --primary:oklch(0.78 0.14 85);
  --primary-fg:oklch(0.18 0.02 250);
  --muted:oklch(0.26 0.02 250);
  --muted-fg:oklch(0.74 0.02 90);
  --accent:oklch(0.62 0.16 75);
  --border:oklch(0.40 0.04 90 / 35%);
  --gold:oklch(0.82 0.14 85);
  --maroon:oklch(0.28 0.04 250);
  --gradient-royal:linear-gradient(135deg,oklch(0.22 0.03 250),oklch(0.55 0.12 80) 55%,oklch(0.82 0.14 85));
  --gradient-temple:radial-gradient(circle at 50% 0%,oklch(0.62 0.16 80 / 22%),transparent 65%);
  --shadow-gold:0 10px 40px -12px oklch(0.78 0.14 85 / 35%);
  --font-display:"Playfair Display",Georgia,serif;
  --font-body:"Inter",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;border-color:var(--border)}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font-body);background:var(--background);color:var(--foreground);
  line-height:1.55;
  background-image:
    radial-gradient(circle at 10% 0%,oklch(0.62 0.16 80 / 10%),transparent 50%),
    radial-gradient(circle at 90% 100%,oklch(0.78 0.14 85 / 8%),transparent 50%);
  min-height:100vh;display:flex;flex-direction:column;
}
main{flex:1}
h1,h2,h3,h4{font-family:var(--font-display);letter-spacing:.01em;margin:0}
p{margin:0}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}

/* Utilities */
.container{max-width:80rem;margin:0 auto;padding:0 1rem}
@media(min-width:1024px){.container{padding:0 2rem}}
.text-gradient-gold{
  background-image:linear-gradient(135deg,oklch(0.85 0.15 85),oklch(0.65 0.18 45));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.gradient-royal{background-image:var(--gradient-royal)}
.shadow-gold{box-shadow:var(--shadow-gold)}
.temple-glow{background-image:var(--gradient-temple)}
.muted{color:var(--muted-fg)}
.card{background:color-mix(in oklab,var(--card) 60%,transparent);border:1px solid var(--border);border-radius:1rem;padding:1.75rem;transition:.25s}
.card:hover{border-color:color-mix(in oklab,var(--primary) 50%,transparent);box-shadow:var(--shadow-gold)}
.section{padding:5rem 1rem}
@media(min-width:1024px){.section{padding:5rem 2rem}}
.section.tight{padding:3rem 1rem}
.bg-soft{background:color-mix(in oklab,var(--card) 30%,transparent);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.95rem 2rem;border-radius:9999px;font-weight:600;font-size:.9rem;transition:transform .15s,opacity .2s}
.btn-primary{background-image:var(--gradient-royal);color:var(--primary-fg);box-shadow:var(--shadow-gold)}
.btn-primary:hover{transform:scale(1.04)}
.btn-outline{border:1px solid color-mix(in oklab,var(--primary) 40%,transparent);color:var(--foreground);backdrop-filter:blur(8px)}
.btn-outline:hover{border-color:var(--primary)}
.btn-ghost{color:var(--primary);border:1px solid color-mix(in oklab,var(--primary) 40%,transparent)}
.btn-ghost:hover{background:color-mix(in oklab,var(--primary) 10%,transparent)}
.chip{display:inline-flex;align-items:center;gap:.5rem;padding:.35rem 1rem;border-radius:9999px;border:1px solid color-mix(in oklab,var(--primary) 40%,transparent);background:color-mix(in oklab,var(--primary) 10%,transparent);color:var(--primary);font-size:.75rem;font-weight:500}
.pill{display:inline-flex;padding:.25rem .75rem;border-radius:9999px;background:color-mix(in oklab,var(--primary) 10%,transparent);color:var(--primary);font-size:.7rem;font-weight:500}

/* Header */
.header{position:sticky;top:0;z-index:40;border-bottom:1px solid var(--border);background:color-mix(in oklab,var(--background) 85%,transparent);backdrop-filter:blur(20px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:.85rem 1rem;max-width:80rem;margin:0 auto}
@media(min-width:1024px){.header-inner{padding:.85rem 2rem}}
.nav{display:none;gap:.25rem;align-items:center}
.nav a{padding:.5rem .75rem;border-radius:.5rem;font-size:.875rem;font-weight:500;color:color-mix(in oklab,var(--foreground) 85%,transparent)}
.nav a:hover,.nav a.active{background:color-mix(in oklab,var(--primary) 10%,transparent);color:var(--primary)}
.menu-btn{display:inline-flex;padding:.5rem;border-radius:.5rem}
@media(min-width:1024px){.nav,.header-cta{display:flex}.menu-btn{display:none}}
.header-cta{display:none;gap:.5rem}
.mobile-nav{display:none;border-top:1px solid var(--border);background:var(--background);padding:.75rem 1rem}
.mobile-nav.open{display:block}
.mobile-nav a{display:block;padding:.6rem .75rem;border-radius:.5rem;font-size:1rem;font-weight:500;color:color-mix(in oklab,var(--foreground) 85%,transparent)}
.mobile-nav a:hover{background:color-mix(in oklab,var(--primary) 10%,transparent);color:var(--primary)}

/* Logo */
.logo{display:flex;align-items:center;gap:.75rem}
.logo-name{font-family:var(--font-display);font-size:1.25rem;font-weight:700;letter-spacing:.04em;line-height:1}
.logo-sub{font-family:var(--font-display);font-size:.7rem;letter-spacing:.35em;color:color-mix(in oklab,var(--primary) 90%,transparent);margin-top:.2rem}

/* Hero */
.hero{position:relative;overflow:hidden;padding:4rem 1rem 5rem}
@media(min-width:1024px){.hero{padding:6rem 2rem 5rem}}
.hero-glow{position:absolute;inset:0;background-image:var(--gradient-temple);pointer-events:none}
.hero-grid{position:relative;max-width:80rem;margin:0 auto;display:grid;gap:3rem;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:1fr 1fr}}
.h-display{font-size:clamp(2.25rem,5vw,3.75rem);font-weight:700;line-height:1.1;margin-top:1.5rem}
.lead{margin-top:1.25rem;max-width:36rem;font-size:1.125rem;color:var(--muted-fg)}
.cta-row{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2rem}
.stats{margin-top:2.5rem;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;border-top:1px solid var(--border);padding-top:1.5rem}
.stat-num{font-family:var(--font-display);font-size:1.6rem;font-weight:700}
.stat-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:var(--muted-fg)}
.hero-art{aspect-ratio:4/5;border-radius:1.5rem;background-image:var(--gradient-royal);padding:.25rem;box-shadow:var(--shadow-gold)}
.hero-art-inner{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:var(--background);border-radius:1.4rem;padding:2rem}

/* Grids */
.grid{display:grid;gap:1.5rem}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
.grid-4{grid-template-columns:1fr}
@media(min-width:640px){.grid-2,.grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}}
.center{text-align:center}
.section-head{max-width:42rem;margin:0 auto;text-align:center}
.h2{font-size:clamp(1.85rem,3.5vw,3rem);font-weight:700}
.h3{font-family:var(--font-display);font-size:1.25rem;font-weight:600}
.feature-icon{display:inline-flex;align-items:center;justify-content:center;height:3rem;width:3rem;border-radius:.75rem;background-image:var(--gradient-royal);color:var(--primary-fg);box-shadow:var(--shadow-gold);margin-bottom:1rem}
.tick-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;margin-top:1.5rem}
.tick{padding:.75rem 1rem;background:color-mix(in oklab,var(--card) 40%,transparent);border:1px solid var(--border);border-radius:.6rem;font-size:.875rem;font-weight:500}

/* Steps */
.step{padding:2rem;border:1px solid var(--border);background:color-mix(in oklab,var(--background) 40%,transparent);border-radius:1rem}
.step-num{font-family:var(--font-display);font-size:3rem;font-weight:700;line-height:1}

/* Prose */
.prose{margin-top:2rem;max-width:none}
.prose h2{font-size:1.75rem;font-weight:700;margin:2rem 0 .75rem}
.prose p,.prose li{color:var(--muted-fg);font-size:1rem;line-height:1.7;margin-bottom:.5rem}
.prose ul li{padding-left:0}

/* CTA box */
.cta-box{max-width:64rem;margin:0 auto;padding:2.5rem;background-image:var(--gradient-royal);color:var(--primary-fg);text-align:center;border-radius:1.5rem;box-shadow:var(--shadow-gold)}
@media(min-width:1024px){.cta-box{padding:4rem}}
.cta-box h2{font-size:clamp(1.85rem,3.5vw,3rem);font-weight:700}
.cta-box p{margin-top:1rem;font-size:1.05rem;opacity:.9}
.cta-box .btn{margin-top:2rem;background:var(--background);color:var(--primary)}

/* Footer */
footer{border-top:1px solid var(--border);background:color-mix(in oklab,var(--card) 40%,transparent);margin-top:3rem}
.footer-grid{display:grid;gap:2.5rem;max-width:80rem;margin:0 auto;padding:3.5rem 1rem}
@media(min-width:1024px){.footer-grid{grid-template-columns:repeat(4,minmax(0,1fr));padding:3.5rem 2rem}}
.footer-grid h4{font-size:.75rem;text-transform:uppercase;letter-spacing:.12em;color:var(--primary);margin-bottom:1rem;font-family:var(--font-body);font-weight:600}
.footer-grid ul li{margin-bottom:.5rem;font-size:.875rem;color:var(--muted-fg)}
.footer-grid ul li a:hover{color:var(--primary)}
.footer-socials{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem}
.social-icon{display:inline-flex;align-items:center;justify-content:center;height:2.25rem;width:2.25rem;border-radius:9999px;background:color-mix(in oklab,var(--primary) 10%,transparent);color:var(--primary);transition:.2s}
.social-icon:hover{background:var(--primary);color:var(--primary-fg)}
.footer-base{border-top:1px solid var(--border);padding:1.5rem 1rem;text-align:center;font-size:.75rem;color:var(--muted-fg)}

/* WhatsApp float */
.wa-float{position:fixed;bottom:1.5rem;right:1.5rem;z-index:50;display:inline-flex}
.wa-float .ping{position:absolute;inset:0;border-radius:9999px;background:#25D366;opacity:.55;animation:ping 1.6s cubic-bezier(0,0,.2,1) infinite}
.wa-float .core{position:relative;display:inline-flex;height:4rem;width:4rem;align-items:center;justify-content:center;border-radius:9999px;background:#25D366;color:#fff;box-shadow:var(--shadow-gold);transition:transform .2s}
.wa-float:hover .core{transform:scale(1.1)}
@keyframes ping{75%,100%{transform:scale(1.8);opacity:0}}

/* FAQ */
details{padding:1.25rem 1.5rem;background:color-mix(in oklab,var(--card) 40%,transparent);border:1px solid var(--border);border-radius:1rem;margin-bottom:.75rem;transition:.2s}
details:hover{border-color:color-mix(in oklab,var(--primary) 40%,transparent)}
details summary{cursor:pointer;list-style:none;font-family:var(--font-display);font-size:1.05rem;font-weight:600;display:flex;justify-content:space-between;gap:1rem;align-items:center}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";color:var(--primary);font-size:1.4rem;transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
details p{margin-top:.75rem;color:var(--muted-fg);font-size:.9rem}

/* Blog card */
.blog-card{border:1px solid var(--border);background:color-mix(in oklab,var(--card) 40%,transparent);border-radius:1rem;padding:1.75rem;transition:.25s;display:block}
.blog-card:hover{border-color:color-mix(in oklab,var(--primary) 50%,transparent);box-shadow:var(--shadow-gold)}
.blog-card h2{margin-top:1rem;font-size:1.15rem;line-height:1.35}
.blog-meta{display:flex;justify-content:space-between;margin-top:1.25rem;font-size:.75rem;color:var(--muted-fg)}

/* Article */
.article{max-width:48rem;margin:0 auto;padding:5rem 1rem}
.article h1{font-size:clamp(2rem,4vw,3rem);font-weight:700;margin-top:1.25rem;line-height:1.15}
.article .meta{margin-top:1rem;font-size:.85rem;color:var(--muted-fg);display:flex;gap:1rem}
.back-link{color:var(--primary);font-size:.85rem}
.back-link:hover{text-decoration:underline}