/* ============================================================
   ROOT
   ============================================================ */

   :root{
    --bg:#08111d;
    --bg-2:#0f1b2d;
    --ink:#151d28;

    --text:#eef1f5;
    --muted:#aeb9c7;

    --accent:#f27446;
    --accent-2:#7da8d8;
}

*,
*::before,
*::after{
    box-sizing:border-box;
}

html{
    scroll-behavior:smooth;
}

body{
    margin:0;

    background:
        radial-gradient(
            circle at 50% 0%,
            rgba(100,150,220,.08),
            transparent 40%
        ),

        linear-gradient(
            to bottom,
            #08111d,
            #0f1b2d
        );

    color:var(--text);

    font-family:Montserrat,sans-serif;

    line-height:1.8;

    overflow-x:hidden;

    min-height:100vh;
}


/* ============================================================
   TYPOGRAPHY
   ============================================================ */

h1,
h2,
h3{
 
        font-family:"Space Grotesk",sans-serif;

    font-weight:700;
    letter-spacing:.05em;
}

h1{
    font-size:clamp(2.8rem,7vw,6rem);
    line-height:.95;
}
.observatory-hero h1{
    max-width: 850px;
}
h2{
    font-size:clamp(2rem,5vw,3.5rem);
}

h3{
    font-size:1.1rem;
}

p{
    color:rgba(255,255,255,.8);
}

.eyebrow{
    color:var(--accent-2);

    text-transform:uppercase;

    letter-spacing:.2em;

    font-size:.75rem;

    margin-bottom:1rem;
}


/* ============================================================
   LAYOUT
   ============================================================ */

section{
    padding:
        clamp(7rem,12vw,10rem)
        1rem;
}

.container{
    max-width:1200px;
    margin:0 auto;
}


/* ============================================================
   NAVIGATION
   ============================================================ */

header{
    position:fixed;

    top:0;
    left:0;
    right:0;

    z-index:100;

    background:rgba(6,12,22,.18);

    backdrop-filter:blur(14px);
}

.nav{
    display:flex;

    justify-content:space-between;

    align-items:center;

    padding:1rem;
}

.brand{
    color:white;

    text-decoration:none;

    font-family:Syncopate,sans-serif;

    font-size:.95rem;
}

nav ul{
    display:flex;

    gap:1.5rem;

    list-style:none;

    margin:0;
    padding:0;
}

nav a{
    color:rgba(255,255,255,.75);

    text-decoration:none;

    transition:.3s;
}

nav a:hover{
    color:white;
}


/* ============================================================
   HERO
   ============================================================ */
   .observatory-hero{
    position: relative;
    height: 100vh;

    display: flex;
    align-items: center;

    overflow: hidden;

    background: url("../images/observatoryGimliB.png");

    background-size: cover;

    /* x y */
    background-position: center;
}

.hero-copy{
    max-width:650px;

    font-size:1.1rem;
}
.observatory-hero::before{
    content:"";

    position:absolute;
    inset:0;

    pointer-events:none;

    background:
        radial-gradient(
            ellipse at 15% 5%,
            rgba(180,220,255,.18),
            transparent 40%
        ),

        linear-gradient(
            110deg,
            rgba(255,255,255,.08),
            transparent 30%
        );

    opacity:.7;
}
.observatory-hero::before{
    content:"";
    position:absolute;
    inset:0;
    pointer-events:none;

    background:

        /* moonlight */
        radial-gradient(
            ellipse at 15% 5%,
            rgba(180,220,255,.16),
            transparent 40%
        ),

        /* slight light streak */
        linear-gradient(
            110deg,
            rgba(255,255,255,.05),
            transparent 30%
        ),

        /* dark reading area behind text */
        radial-gradient(
            circle at 35% 45%,
            rgba(5,10,20,.70),
            transparent 58%
        );

    opacity:.9;
}
/* ============================================================
   CURRENT PROJECT
   ============================================================ */

.book-wrap{
    display:grid;

    grid-template-columns:
        1fr
        400px;

    gap:4rem;

    align-items:center;
}

.book-cover{
    aspect-ratio:2/3;

    border-radius:20px;

    background:
        linear-gradient(
            145deg,
            rgba(255,255,255,.08),
            rgba(255,255,255,.03)
        );

    border:1px solid rgba(255,255,255,.08);

    backdrop-filter:blur(18px);
}

.book-tags{
    display:flex;

    flex-wrap:wrap;

    gap:.75rem;

    margin-top:2rem;
}

.book-tags span{
    padding:.35rem .7rem;

    border-radius:999px;

    background:rgba(255,255,255,.06);

    border:1px solid rgba(255,255,255,.08);

    font-size:.8rem;
}


/* ============================================================
   WRITING CARDS
   ============================================================ */

.writing-grid{
    display:grid;

    grid-template-columns:
        repeat(auto-fit,minmax(280px,1fr));

    gap:2rem;
}

.writing-card{
    padding:2rem;

    border-radius:24px;

    background:
        linear-gradient(
            145deg,
            rgba(255,255,255,.07),
            rgba(255,255,255,.03)
        );

    border:1px solid rgba(255,255,255,.08);

    backdrop-filter:blur(16px);

    transition:.3s;
}

.writing-card:hover{
    transform:translateY(-6px);

    border-color:
        rgba(160,210,255,.25);
}


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

footer{
    padding:4rem 1rem;

    border-top:
        1px solid rgba(255,255,255,.06);

    text-align:center;
}

footer p{
    color:rgba(255,255,255,.55);
}


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

@media (max-width:900px){

    .book-wrap{
        grid-template-columns:1fr;
    }

    nav ul{
        gap:1rem;
    }

}