/* =========================
   THEME & GLOBAL
========================= */
:root{
  --bg:#0f172a;           /* deep slate */
  --panel:#111827;        /* panel background */
  --card:#0b1224;         /* card background */
  --text:#e5e7eb;         /* body text */
  --muted:#94a3b8;        /* secondary text */
  --border:#1f2937;       /* borders */
  --brand:#60a5fa;        /* blue */
  --accent:#22d3ee;       /* cyan */
  --success:#34d399;
  --error:#f87171;
  --radius:16px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --header-h: 64px;

  /* Icon palette for About Us */
  --i-red:#ef4444;
  --i-blue:#60a5fa;
  --i-green:#22c55e;
  --i-amber:#f59e0b;
  --i-yellow:#fbbf24;
  --i-purple:#a78bfa;
}

/* Light theme tokens */
:root[data-theme="light"]{
  --bg:#ffffff;
  --panel:#f6f7fb;
  --card:#ffffff;
  --text:#0b1224;
  --muted:#4b5563;
  --border:#e5e7eb;
  --brand:#2563eb;
  --accent:#06b6d4;
  --shadow:0 10px 30px rgba(0,0,0,.08);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:"Outfit",system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, color-mix(in oklab, var(--brand) 20%, transparent), transparent 40%),
    radial-gradient(1200px 600px at 110% -10%, color-mix(in oklab, var(--accent) 20%, transparent), transparent 40%),
    var(--bg);
  line-height:1.6;
  color-scheme: dark light;
  -webkit-tap-highlight-color: transparent;
  text-rendering: optimizeLegibility;
  font-synthesis-weight: none;
}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3{color:color-mix(in oklab, var(--text) 92%, #fff 8%);margin:0 0 .5rem}
p{margin:.35rem 0 0}
.lead{font-size:1.06rem}
.small{font-size:.95rem}.xsmall{font-size:.85rem}.muted{color:var(--muted)}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px)}
.skip-link{position:absolute;left:-9999px}
.skip-link:focus{left:1rem;top:1rem;background:#111;color:#fff;padding:.5rem .75rem;border-radius:10px;z-index:1000}

/* Focus rings */
:where(a,button,[role="button"],input,textarea,select):focus-visible{
  outline: 2px solid #93c5fd;
  outline-offset: 2px;
  border-radius: 10px;
}

.container{width:min(1120px,92%);margin-inline:auto}
.section{padding:64px 0}

/* Performance hint */
.section:not(.hero){content-visibility:auto;contain-intrinsic-size: 1000px 800px}

.section--alt{
  background:
    linear-gradient(0deg, color-mix(in oklab, var(--panel) 98%, transparent), color-mix(in oklab, var(--panel) 98%, transparent));
}
.flow > * + *{margin-top:.8rem}

/* Anchor targets */
[id]{scroll-margin-top: calc(var(--header-h) + 18px);}

/* =========================
   HEADER / NAV
========================= */
.site-header{
  position:sticky;top:0;z-index:20;
  background:color-mix(in oklab, var(--bg) 75%, transparent);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--border);
}

/* Rotating attention bar (single-line) */
.attention-bar{
  display:flex;align-items:center;gap:.5rem;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  padding:.4rem .85rem;border-bottom:1px solid var(--border);
  background:color-mix(in oklab, var(--bg) 88%, transparent);
  font-weight:600;font-size:.95rem;
}
.attention-prefix{opacity:.9}
.attention-text{display:inline-block;will-change:opacity;transition:opacity .3s ease}

/* Logo */
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.logo{display:flex;align-items:center;gap:.55rem;font-weight:700}
.logo-icon{font-size:1.15rem;opacity:.95}
.logo-text{display:flex;flex-direction:column;line-height:1}
.logo-line{display:block}
.logo-line:first-child{font-size:1.05rem;letter-spacing:.02em}
.logo-line:last-child{font-size:1.05rem;margin-top:1px}
.logo-tag{display:block;font-weight:400;font-size:.8rem;color:var(--muted);line-height:1.2;margin-top:3px}
.logo-img{width:28px;height:28px;border-radius:6px}
.nav-links{display:flex;gap:1rem;list-style:none;margin:0;padding:0}
.nav-links a{padding:.5rem .75rem;border-radius:10px}
.nav-links a:hover{background:rgba(127,127,127,.10)}

/* Theme toggle */
.theme-toggle{
  border:1px solid var(--border);
  background:var(--panel);
  color:var(--text);
  padding:.5rem .6rem;
  border-radius:12px;
  margin-right:.6rem;
  cursor:pointer;
  box-shadow:var(--shadow);
}
.theme-toggle:hover{filter:brightness(1.03)}
.theme-icon{display:inline-block;min-width:1.25rem;text-align:center}

/* Mobile menu */
.hamburger{display:none;background:transparent;border:0;cursor:pointer}
.hamburger-box{display:block;width:28px;height:18px;position:relative}
.hamburger-inner,.hamburger-inner::before,.hamburger-inner::after{
  content:"";position:absolute;left:0;width:100%;height:2px;background:currentColor;border-radius:2px;transition:transform .25s,opacity .25s
}
.hamburger-inner{top:8px}
.hamburger-inner::before{top:-8px}
.hamburger-inner::after{top:8px}
.hamburger[aria-expanded="true"] .hamburger-inner{transform:rotate(45deg)}
.hamburger[aria-expanded="true"] .hamburger-inner::before{transform:rotate(90deg) translateX(-8px)}
.hamburger[aria-expanded="true"] .hamburger-inner::after{opacity:0}

/* =========================
   HERO
========================= */
.hero{padding-top:84px}
.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:2.2rem;align-items:center}
.hero-media{position:relative}
.hero-media img{border-radius:var(--radius);box-shadow:var(--shadow)}
.img-fallback{display:none}
.card__media{position:relative; overflow:hidden;}
.card__media img{border-radius:12px}

.hero-text h1{font-size:clamp(1.9rem,4.2vw,3.2rem);line-height:1.15;margin-bottom:.6rem}
.under-cta{margin-top:.4rem}

/* Buttons */
.cta-row{display:flex;gap:.8rem;margin:1rem 0 1.2rem}
.btn{
  display:inline-block;border:0;padding:.8rem 1.1rem;border-radius:12px;cursor:pointer;
  background:linear-gradient(135deg,var(--brand),var(--accent));color:#00131a;font-weight:700;
  box-shadow:0 8px 20px color-mix(in oklab, var(--brand) 35%, transparent)
}
.btn:hover{filter:brightness(1.05)}
.btn--alt{
  background:linear-gradient(135deg,#fff,#dbeafe);color:#0b1224;
  box-shadow:0 8px 20px rgba(0,0,0,.08)
}

/* Social icons */
.social-media{display:flex;gap:.6rem;align-items:center;flex-wrap:wrap}
.sm-row{margin-top:.5rem}
.sm-icon{transition:transform .2s ease,filter .2s ease}
.sm-icon:hover{transform:translateY(-2px)}
.facebook{color:#1877F2}
.instagram{color:#E4405F}
.linkedin{color:#0A66C2}
.youtube{color:#FF0000}
.twitter{color:#000000;width:32px;height:32px}
.twitter:hover{color:#444}
.contact-grid .sm-icon.twitter{width:24px;height:24px}

/* =========================
   TILES
========================= */
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.tile{
  background:var(--card);border:1px solid var(--border);border-radius:16px;padding:1rem;
  box-shadow:var(--shadow)
}
.tile-emoji{font-size:1.6rem;display:inline-block;margin-bottom:.4rem}

/* =========================
   CARDS / BOOKS SECTION
========================= */
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);
  container-type:inline-size;
}
.card--split{display:grid;grid-template-columns:1fr .9fr;gap:1.6rem;padding:1.6rem}
.card--stack{padding:1.6rem}
@container (max-width: 700px){
  .card--split{grid-template-columns:1fr;gap:1rem}
}

.section-head h2{margin:0 0 .35rem}
.pill-list{display:flex;flex-wrap:wrap;gap:.5rem;padding:0;margin:.4rem 0 0;list-style:none}
.pill-list li{border:1px dashed color-mix(in oklab, var(--border) 60%, #334155 40%);border-radius:999px;padding:.35rem .65rem;font-size:.9rem;color:color-mix(in oklab, var(--text) 85%, #cbd5e1 15%)}
.btn-row{display:flex;gap:.8rem;margin-top:1rem}

/* =========================
   YOUTUBE EMBEDS
========================= */
.grid-embed{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1rem}
.embed{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:.8rem}
.embed__title{margin:.2rem 0 .6rem}
.ratio{position:relative;width:100%;padding-top:56.25%;overflow:hidden;border-radius:10px;background:var(--card)}
.ratio iframe{position:absolute;inset:0;width:100%;height:100%;border:0;background:var(--card)}
/* fade in iframes only once loaded */
.lazy-hide{opacity:0;transition:opacity .25s ease}
.lazy-hide.lazy-ready{opacity:1}

/* =========================
   TESTIMONIALS
========================= */
.testimonials{padding-top:32px}
.tn-slider{position:relative;margin-top:1rem}
.tn-track{
  display:grid;grid-auto-flow:column;grid-auto-columns:100%;
  overflow:hidden;scroll-behavior:smooth;border-radius:16px
}
.tn-card{
  background:var(--panel);border:1px solid var(--border);
  padding:1.2rem;border-radius:16px;min-height:160px;display:flex;flex-direction:column;justify-content:center
}
.tn-quote{font-size:1.05rem}
.tn-meta{margin-top:.6rem;color:var(--muted)}
.tn-nav{
  position:absolute;top:50%;transform:translateY(-50%);
  background:rgba(127,127,127,.10);border:1px solid var(--border);color:var(--text);
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;cursor:pointer
}
.tn-prev{left:8px}.tn-next{right:8px}
.tn-dots{display:flex;gap:.4rem;justify-content:center;margin-top:.8rem}
.tn-dots button{
  width:8px;height:8px;border-radius:50%;border:0;background:#334155;cursor:pointer
}
:root[data-theme="light"] .tn-dots button{background:#c7d2fe}
.tn-dots button[aria-current="true"]{background:#93c5fd}

/* =========================
   ABOUT & CONTACT (Author image fix here)
========================= */
.about-grid{
  display:grid;
  grid-template-columns:minmax(220px,300px) 1fr; /* photo column stays reasonable */
  gap:1.4rem;
  align-items:start;
}
.about-media{max-width:300px}
.about-icons{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1rem;
  margin-top:.5rem
}
.about-icon{
  display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-start;
  gap:.5rem;padding:1rem;border:1px solid var(--border);border-radius:14px;background:var(--panel);
  text-align:left;min-height:140px
}
.about-icon i{font-size:1.25rem}
.about-icon h3{margin:0}
.i-red{color:var(--i-red)}
.i-blue{color:var(--i-blue)}
.i-green{color:var(--i-green)}
.i-amber{color:var(--i-amber)}
.i-yellow{color:var(--i-yellow)}
.i-purple{color:var(--i-purple)}

.author-img{
  width:100%;
  height:auto;            /* keep natural aspect ratio (prevents elongation) */
  max-width:300px;        /* tasteful cap on desktop */
  object-fit:cover;       /* gentle crop if needed */
  border-radius:14px;
  box-shadow:var(--shadow);
  background:var(--card);
}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.contact-card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:1rem}
.field-row{display:flex;gap:.6rem;align-items:center}
input[type="email"],
input[type="text"],
textarea{
  width:100%;border:1px solid #334155;background:var(--card);color:var(--text);border-radius:10px;padding:.75rem .9rem;outline:none
}
:root[data-theme="light"] input[type="email"],
:root[data-theme="light"] input[type="text"],
:root[data-theme="light"] textarea{border-color:#d1d5db}
input[type="email"]:focus,
input[type="text"]:focus,
textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in oklab, var(--brand) 35%, transparent)}
.contact-form{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:1rem;display:grid;gap:.8rem}
.contact-form label{display:grid;gap:.35rem}
.contact-form button{justify-self:start}

/* =========================
   FOOTER
========================= */
.site-footer{border-top:1px solid var(--border);padding:24px 0;background:color-mix(in oklab, var(--bg) 98%, transparent)}

/* =========================
   STICKY MOBILE FOOTER BAR
========================= */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;display:none;gap:.6rem;justify-content:center;
  padding:.6rem max(1rem,env(safe-area-inset-right)) calc(.6rem + env(safe-area-inset-bottom)) max(1rem,env(safe-area-inset-left));
  background:color-mix(in oklab, var(--bg) 92%, transparent);backdrop-filter:blur(8px);border-top:1px solid var(--border);z-index:30
}
.btn--mobile{flex:1;text-align:center}

/* =========================
   RESPONSIVE
========================= */
@media (max-width:1100px){
  .tiles{grid-template-columns:repeat(2,1fr)}
  .about-icons{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr}
  .card--split{grid-template-columns:1fr}
  .about-grid,.contact-grid{grid-template-columns:1fr}
  .grid-embed{grid-template-columns:repeat(2,1fr)}
  .nav-links{display:none;position:absolute;right:1rem;top:58px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:.5rem;flex-direction:column;min-width:190px}
  .nav-links a{display:block}
  .nav-links.open{display:flex}
  .hamburger{display:inline-block}
  .mobile-cta{display:flex}
  body{padding-bottom:80px}

  /* Author image sizing on tablets/phones */
  .about-media{max-width:280px;margin-inline:auto}
  .author-img{max-width:280px}
}
@media (max-width:640px){
  .grid-embed{grid-template-columns:1fr}
  .about-icons{grid-template-columns:repeat(2,1fr)}

  /* Slightly smaller author image on small phones */
  .about-media{max-width:220px}
  .author-img{max-width:220px}
}

/* =========================
   IMAGE STRETCH FIX & HERO IMAGE MATCH
========================= */
#booksImg{
  width:100%;
  height:auto;
  object-fit:contain;
  object-position:center center;
  image-rendering:auto;
}
@media (max-width: 640px){
  #booksImg{
    width:100%;
    aspect-ratio: 4 / 3;
    height:auto;
    object-fit:contain;
    object-position:center;
  }
}

/* Make hero image same footprint as video (16:9), without distortion */
#heroImg{
  width:100%;
  aspect-ratio: 16 / 9;
  height:auto;
  object-fit: contain;
  object-position: center;
  image-rendering: auto;
}

/* =========================
   MOTION PREFERENCES
========================= */
@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation-duration:0.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:0.001ms !important;
    scroll-behavior:auto !important
  }
}