@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,100..900;1,9..144,100..900&display=swap');
    
        *{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

:root{
    --primary:#0f172a;
    --secondary:#1e293b;
    --accent:#2563eb;
    --text:#475569;
    --light:#f8fafc;
    --white:#ffffff;
    --ink: #0C0F1A;
    --ink-mid: #131829;
    --ink-soft: #1B2236;
    --teal: #00C2A8;
    --teal-dim: rgba(0, 194, 168, 0.15);
    --teal-glow: rgba(0, 194, 168, 0.35);
    --amber: #F0A500;
    --amber-dim: rgba(240, 165, 0, 0.12);
    --slate: rgba(255, 255, 255, 0.55);
    --slate-dim: rgba(255, 255, 255, 0.08);
    --border: rgba(255, 255, 255, 0.07);
    --white: #F0F4F8;
    --grad-teal: linear-gradient(135deg, #00C2A8, #00E5CC);
    --grad-amber: linear-gradient(135deg, #F0A500, #FFD166);
    --grad-hero: linear-gradient(160deg, #0C0F1A 0%, #131E36 60%, #0C0F1A 100%);
    --f1:"Fraunces";
}

body{
    font-family:'Poppins',sans-serif;
    background:var(--light);
    color:#1e293b;
    line-height:1.8;
}

body::after {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.025;
    background-image: url(../images/shade.svg);
}

/* ==========================
   HERO SECTION
========================== */

.hero{
    position: relative;
    overflow: hidden;
    background: linear-gradient(160deg, #0C0F1A 0%, #131E36 60%, #0C0F1A 100%);
    padding: 90px 0 31px;
    min-height: 93vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.book-content h1 span {
    display: block;
    color: #00e6d3;
    font-style: italic;
    font-weight: 300;
}


  /* Geometric scan-lines */
  .hero-scanlines {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 60px,
      rgba(0,194,168,0.025) 60px,
      rgba(0,194,168,0.025) 61px
    );
    pointer-events: none;
  }

  /* Diagonal accent shape */
  .hero-shape {
    position: absolute;
    right: -120px; top: -80px;
    width: 700px; height: 700px;
    border-radius: 50%;
    background: radial-gradient(ellipse at center, rgba(0,194,168,0.10) 0%, transparent 70%);
    pointer-events: none;
  }

  .hero-shape-2 {
    position: absolute;
    left: -60px; bottom: -100px;
    width: 500px; height: 500px;
    border-radius: 50%;
    background: radial-gradient(ellipse at center, rgba(240,165,0,0.06) 0%, transparent 70%);
    pointer-events: none;
  }

  /* Animated circuit dots */
  .circuit-dots {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
  }

  .circuit-dots::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
      radial-gradient(circle, rgba(0,194,168,0.2) 1px, transparent 1px);
    background-size: 48px 48px;
    animation: dotDrift 25s linear infinite;
    opacity: 0.3;
  }


.hero::before{
    content:"";
    position:absolute;
    width:500px;
    height:500px;
    background:rgba(37,99,235,.15);
    border-radius:50%;
    filter:blur(120px);
    top:-150px;
    right:-100px;
}

.hero::after{
    content:"";
    position:absolute;
    width:350px;
    height:350px;
    background:rgba(255,255,255,.05);
    border-radius:50%;
    filter:blur(100px);
    bottom:-100px;
    left:-80px;
}

.container{
    width:90%;
    max-width:1200px;
    margin:auto;
    position:relative;
    z-index:2;
}

.book-wrapper{
    display:flex;
    align-items:center;
    gap:80px;
    flex-wrap:wrap;
}

.book-image{
    flex:1;
    text-align:center;
}

.book-image img{
    width:100%;
    max-width:380px;
    border-radius:18px;
    box-shadow:
        0 30px 60px rgba(0,0,0,.45),
        0 0 0 1px rgba(255,255,255,.08);
    transition:.4s;
}

.book-image img:hover{
    transform:translateY(-10px) scale(1.02);
}

.book-content{
    flex:1.5;
    color:#fff;
}

.tag{
    display:inline-block;
    background:rgba(255,255,255,.1);
    border:1px solid rgba(255,255,255,.15);
    padding:10px 18px;
    border-radius:50px;
    font-size:13px;
    letter-spacing:.5px;
    margin-bottom:20px;
    backdrop-filter:blur(10px);
}

.book-content h1 {
    font-family: 'Fraunces', serif;
    font-size: clamp(30px, 4vw, 47px);
    font-weight: 900;
    letter-spacing: -1.5px;
    line-height: 1.05;
    margin-bottom: 16px;
}

.subtitle{
    color:#cbd5e1;
    font-size:18px;
    max-width:700px;
    
}

/* ==========================
   CONTENT SECTION
========================== */

.content-section{
    padding:90px 20px;
    margin-top:-60px;
}

.card{
    background:#fff;
    border-radius:24px;
    padding:60px;
    box-shadow:
        0 10px 40px rgba(15,23,42,.08);
}

.card h2{
    font-size:36px;
    color:var(--primary);
    margin-bottom:30px;
    position:relative;
    font-family:var(--f1);
}

.card h2::after{
    content:"";
    width:70px;
    height:4px;
    background:var(--accent);
    display:block;
    margin-top:12px;
    border-radius:10px;
}

.card p{
    color:var(--text);
    font-size:17px;
    margin-bottom:22px;
}

/* ==========================
   HIGHLIGHT BOX
========================== */

.highlight{
    margin-top:35px;
    background:linear-gradient(
        135deg,
        #eff6ff,
        #dbeafe
    );
    border-left:5px solid var(--accent);
    padding:28px;
    border-radius:14px;
}

.highlight p{
    margin:0;
    color:#0f172a;
    font-weight:600;
}
 

/* ==========================
   FOOTER
========================== */

footer{
    background:#020617;
    color:#94a3b8;
    text-align:center;
    padding:30px 20px;
}

/* ==========================
   MOBILE
========================== */

@media(max-width:991px){

    .book-wrapper{
        gap:40px;
        text-align:center;
    }

    .book-content h1{
        font-size:36px;
    }

    .subtitle{
        margin:auto;
    }

    .card{
        padding:35px;
    }
}

@media(max-width:576px){

    .hero{
        padding:70px 15px;
    }

    .book-content h1{
        font-size:28px;
    }

    .subtitle{
        font-size:16px;
    }

    .card{
        padding:25px;
    }

    .card h2{
        font-size:28px;
    }
}

/* ═══════════════════ NAV ═══════════════════ */
  nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 500;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 6%;
    background: rgba(12,15,26,0.82);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border);
    transition: box-shadow 0.3s;
  }

  .nav-logo {
    display: flex; align-items: center; gap: 10px;
    text-decoration: none;
  }

  .logo-emblem {
    width: 36px; height: 36px;
    border-radius: 8px;
    background: var(--grad-teal);
    display: grid; place-items: center;
    flex-shrink: 0;
  }

  .logo-emblem svg { width: 20px; height: 20px; }

  .logo-wordmark {
    display: flex; flex-direction: column;
    line-height: 1;
  }

  .logo-top {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 0.5px;
    color: var(--white);
  }

  .logo-bottom {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 9px;
    letter-spacing: 2px;
    color: var(--teal);
    text-transform: uppercase;
    margin-top: 2px;
  }

  .nav-links {
    display: flex; align-items: center; gap: 43px;
    list-style: none;
  }

  .nav-links a {
    font-size: 13.5px; font-weight: 500;
    color: var(--slate);
    text-decoration: none;
    letter-spacing: 0.2px;
    transition: color 0.2s;
    position: relative;
  }

  .nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0; right: 100%;
    height: 1.5px;
    background: var(--teal);
    transition: right 0.3s;
  }

  .nav-links a:hover { color: var(--white); }
  .nav-links a:hover::after { right: 0; }

  .nav-right { display: flex; gap: 10px; align-items: center; }

  .btn {
    display: inline-flex; align-items: center; gap: 7px;
    padding: 9px 20px;
    border-radius: 7px;
    font-family: 'Outfit', sans-serif;
    font-size: 13.5px; font-weight: 500;
    cursor: pointer; border: none;
    text-decoration: none;
    transition: all 0.22s;
    letter-spacing: 0.1px;
  }

  .btn-ghost {
    background: transparent;
    color: var(--slate);
    border: 1px solid var(--border);
  }
  .btn-ghost:hover {
    background: var(--slate-dim);
    color: var(--white);
    border-color: rgba(255,255,255,0.15);
  }

  .btn-teal {
    background: var(--grad-teal);
    color: var(--ink);
    font-weight: 600;
    box-shadow: 0 4px 18px var(--teal-glow);
  }
  .btn-teal:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px var(--teal-glow);
  }

  .btn-amber {
    background: var(--grad-amber);
    color: var(--ink);
    font-weight: 600;
    box-shadow: 0 4px 18px rgba(240,165,0,0.3);
  }
  .btn-amber:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(240,165,0,0.45);
  }

  .btn-lg { padding: 13px 30px; font-size: 15px; border-radius: 9px; }
  .btn-outline-teal {
    background: transparent;
    border: 1.5px solid rgba(0,194,168,0.4);
    color: var(--teal);
  }
  .btn-outline-teal:hover {
    background: var(--teal-dim);
    border-color: var(--teal);
  }
  
  .book-content .btn {
    margin-top: 24px;
}