@font-face {
    font-family: 'Sequel Sans Display';
    src: url('fonts/Sequel Sans OTF/Sequel Sans Light Disp.otf') format('opentype');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Sequel Sans Display';
    src: url('fonts/Sequel Sans OTF/Sequel Sans Roman Disp.otf') format('opentype');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Sequel Sans Display';
    src: url('fonts/Sequel Sans OTF/Sequel Sans Book Disp.otf') format('opentype');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Satoshi';
    src: url('fonts/Satoshi OTF/Satoshi-Light.otf') format('opentype');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Satoshi';
    src: url('fonts/Satoshi OTF/Satoshi-MediumItalic.otf') format('opentype');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Satoshi';
    src: url('fonts/Satoshi OTF/Satoshi-Bold.otf') format('opentype');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@import url('https://fonts.cdnfonts.com/css/satoshi');

* {
    margin: 0;
    padding: 0;
    text-decoration: none;
}

body {
    background-color: #03060D;
}

.primary-btn {
    background-color: #006FEE;
    color: #E4E4E4;
    border-radius: 10px;
    width: 230px;
    height: 50px;
    border: none;
    font-family: 'Satoshi', sans-serif;
    font-weight: 600;
    cursor: pointer;
    font-size: 16px;
    transition: transform .2s ease, box-shadow .2s ease;
    box-shadow: 0 0 0 rgba(0, 111, 238, 0);
}

.primary-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 111, 238, 0.45), 0 0 18px rgba(0, 111, 238, 0.6);
}

.secondary-btn {
    background-color: transparent;
    color: #E4E4E4;
    border-radius: 10px;
    width: 230px;
    height: 50px;
    border: 1px solid #006FEE;
    font-family: 'Satoshi', sans-serif;
    font-weight: 600;
    cursor: pointer;
    font-size: 16px;
    transition: .2s;
}

.secondary-btn:hover {
    transform: translateY(-4px);
    background-color: #E4E4E4;
    color: #03060D;
    border: 1px solid transparent;
}

.bold {
    font-weight: 900;
}

.home-header {
    background: linear-gradient(180deg, #03060D 0%, #03060d00 100%);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 0 30px;
    height: 65px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.team-logo {
    font-family: 'Sequel Sans Display', 'Sequel Sans', 'Sequel', sans-serif;
    font-weight: 300;
    color: #fff;
    justify-self: start;
}

.project-title {
    font-family: "Bricolage Grotesque", sans-serif;
    font-size: 18px;
    letter-spacing: 1.8px;
    color: #fff;
    text-align: center;
    justify-self: center;
}

.nav-menu-toggler {
    display: flex;
    flex-direction: column;
    justify-content: right;
    gap: 6px;
    cursor: pointer;
    justify-self: end;
}

.nav-menu-toggler-line {
    width: 27px;
    height: 1px;
    background-color: #fff;
}

#nav-menu-line-2 {
    width: 15px;
}

#nav-menu-line-3 {
    width: 0;
}

.nav-menu-toggler:hover {
    display: flex;
    flex-direction: column;
    justify-content: right;
    gap: 6px;
    cursor: pointer;
}

.nav-menu-toggler:hover#nav-menu-line-2 {
    width: 100%;
}

.nav-menu-toggler:hover#nav-menu-line-3 {
    width: 100%;
}

.intro {
    background-image: url("assets/home-bg-1.png");
    background-position: center;
    background-size: contain;
}

.hero-section {

    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(0, #03060D 0%, #03060D 20%, #03060D00 40%, #03060D00 100%);
}
.hero-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    position: relative;
    z-index: 1;
    gap: 34px;
    padding: 160px 0 100px;
    background-image: url("assets/home-bg-2.png");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

#particles-js {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

#hero-title {
    font-family: 'Sequel Sans Display', 'Sequel Sans', 'Sequel', sans-serif;
    font-weight: 300;
    font-size: 60px;
    color: #fff;
    text-align: center;
    width: 55%;
}
#hero-title>span {
    font-family: 'Satoshi', sans-serif;
    font-weight: 300;
    color: #ffffff7a;
}

#hero-title>b {
    font-weight: 600;
}

#hero-description {
    font-family: 'Satoshi', sans-serif;
    font-weight: 500;
    color: #CCCCCC;
    font-size: 14px;
    width: 40%;
    text-align: center;
}
.cta-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
}

.section-separator {
    margin: 32px 0 12px;
    height: 0.5px;
    background: linear-gradient(90deg, #ffffff1c 0%, #ffffff76 50%, #ffffff1c 100%);
}


#exoplanets-title {
    color: #FFFFFF;
    font-family: 'Sequel Sans Display', 'Sequel Sans', 'Sequel', sans-serif;
    font-weight: 700;
    font-size: 64px;
}

.gradient-text {
    background: linear-gradient(90deg, #2B66E5 0%, #006FEE 20%, #96B7CC 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

#exoplanets-describtion {
    font-family: 'Satoshi', sans-serif;
    font-weight: 300;
    color: #cccccca8;
    font-size: 22px;
    width: 70%;
}

#exoplanets-describtion>span {
    font-family: 'Satoshi', sans-serif;
    font-weight: 500;
    color: #EBEBEB;
}

/* Exoplanet showcase refinements */
.exoplanets {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: 80px;
    background: linear-gradient(180deg, rgba(3, 6, 13, 0.95) 0%, rgba(3, 6, 13, 0.98) 70%, #050608 100%);
}

.exoplanets-container {
    width: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(180deg, #006fee00 0%, #006fee1c 100%);
    border-radius: 80px;
    padding: 30px 200px 160px;
    text-align: center;
    gap: 40px;
    position: relative;
    z-index: 1;
}

.exo-section {
    position: relative;
    background: radial-gradient(circle at center, rgba(0, 111, 238, 0.15), transparent 65%), linear-gradient(180deg, rgba(3, 6, 13, 0.9) 0%, rgba(3, 6, 13, 0.98) 100%);
    overflow: hidden;
}

.exo-section::before,
.exo-section::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.28) 0%, transparent 55%);
    opacity: 0.06;
    pointer-events: none;
}

.exo-section::after {
    background: radial-gradient(circle, rgba(0, 198, 255, 0.35) 0%, transparent 60%);
    mix-blend-mode: screen;
    transform: scale(1.6) translateY(-8%);
}

.exo-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 170px;
    padding: 70px 30px;
}

.exo-description {
    max-width: 360px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.exo-description h2 {
    font-family: 'Sequel Sans Display', 'Sequel Sans', 'Sequel', sans-serif;
    font-size: clamp(26px, 2.6vw, 36px);
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.exo-description p {
    font-family: 'Satoshi', sans-serif;
    font-size: 14px;
    color: rgba(228, 228, 228, 0.78);
    line-height: 1.6;
}

.exo-description hr {
    border: 0;
    height: 1px;
    width: 100%;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.45) 50%, transparent 100%);
    opacity: 0.4;
}

.exo-description .exo-note {
    opacity: 0.65;
}

.exo-description .exo-author {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.28em;
    color: rgba(228, 228, 228, 0.55);
}

.exo-description code {
    color: #65B5FF;
    font-family: 'Satoshi', sans-serif;
    padding: 2px 8px;
    background: rgba(0, 111, 238, 0.14);
    border-radius: 999px;
}

.exo-facts {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 14px;
}

.exo-facts li {
    font-family: 'Satoshi', sans-serif;
    font-size: 15px;
    line-height: 1.7;
    color: rgba(228, 237, 255, 0.88);
    text-align: left;
    background: rgba(6, 18, 40, 0.85);
    border: 1px solid rgba(0, 198, 255, 0.18);
    border-radius: 16px;
    padding: 14px 18px;
    box-shadow: 0 12px 24px rgba(2, 8, 20, 0.32);
}

.exo-facts li span {
    display: block;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.34em;
    color: rgba(147, 201, 255, 0.75);
    margin-bottom: 6px;
}

.exo-system {
    position: relative;
    width: min(740px, 90vw);
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.solar-system {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    overflow: visible;
    --year-in-seconds: 4s;
}

.solar-system::after {
    content: "";
    position: absolute;
    inset: -20%;
    background-image: radial-gradient(rgba(255, 255, 255, 0.6) 1px, transparent 1px);
    background-size: 120px 120px;
    opacity: 0.12;
    filter: blur(0.5px);
    pointer-events: none;
}

.sun {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60px;
    height: 60px;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    background: radial-gradient(circle, #ffd000 0%, #f9b700 40%, #f48b18 70%, #e06317 100%);
    box-shadow: 0 0 14px 4px rgba(255, 160, 48, 0.45), 0 0 30px 16px rgba(255, 203, 0, 0.18);
    z-index: 20;
}

.orbit,
.asteroid-belt {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    border: 1px solid rgba(102, 166, 229, 0.12);
    animation: orbit-spin linear infinite;
    transform-origin: center;
}

.orbit::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    box-shadow: inset 0 6px 0 -2px rgba(0, 0, 0, 0.24);
}

.orbit--mercury {
    width: 140px;
    height: 140px;
    animation-duration: max(2s, calc(var(--year-in-seconds) * 0.24));
}

.orbit--mercury::after {
    width: 8px;
    height: 8px;
    background: #9f5e26;
}

.orbit--venus {
    width: 200px;
    height: 200px;
    animation-duration: max(3s, calc(var(--year-in-seconds) * 0.62));
}

.orbit--venus::after {
    width: 16px;
    height: 16px;
    background: #beb768;
}

.orbit--earth {
    width: 280px;
    height: 280px;
    animation-duration: max(4s, calc(var(--year-in-seconds) * 1));
}

.orbit--earth::after {
    width: 14px;
    height: 14px;
    background: #11abe9;
    box-shadow: inset 0 6px 0 -2px rgba(0, 0, 0, 0.24), 18px 0 0 -10px rgba(180, 180, 180, 0.8);
}

.orbit--mars {
    width: 360px;
    height: 360px;
    animation-duration: max(6s, calc(var(--year-in-seconds) * 1.88));
}

.orbit--mars::after {
    width: 10px;
    height: 10px;
    background: #cf3921;
}

.asteroid-belt {
    width: 420px;
    height: 420px;
    border: 1px solid transparent;
    animation-duration: clamp(10s, calc(var(--year-in-seconds) * 3.5), 45s);
    overflow: hidden;
}

.asteroid-belt::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 200px;
    margin: -100px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.7) 0.5px, transparent 1px);
    background-size: 9px 9px;
    opacity: 0.35;
}

.orbit--jupiter {
    width: 500px;
    height: 500px;
    animation-duration: clamp(18s, calc(var(--year-in-seconds) * 11.86), 65s);
}

.orbit--jupiter::after {
    width: 24px;
    height: 24px;
    background: #c76e2a;
}

.orbit--saturn {
    width: 620px;
    height: 620px;
    animation-duration: clamp(28s, calc(var(--year-in-seconds) * 29.5), 85s);
}

.orbit--saturn::after {
    width: 20px;
    height: 20px;
    background: #e7c194;
    box-shadow: inset 0 6px 0 -2px rgba(0, 0, 0, 0.24);
}

.orbit--saturn::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    width: 36px;
    height: 12px;
    transform: translate(-50%, -50%) rotate(-18deg);
    border-radius: 50%;
    box-shadow: 0 0 0 2px rgba(152, 118, 65, 0.7), 4px 0 0 3px rgba(152, 118, 65, 0.32), -4px 0 0 3px rgba(152, 118, 65, 0.32);
    animation: orbit-spin clamp(28s, calc(var(--year-in-seconds) * 29.5), 85s) linear infinite reverse;
}

.orbit--uranus {
    width: 710px;
    height: 710px;
    animation-duration: clamp(36s, calc(var(--year-in-seconds) * 84), 110s);
}

.orbit--uranus::after {
    width: 18px;
    height: 18px;
    background: #b5e3e3;
}

.orbit--neptune {
    width: 820px;
    height: 820px;
    animation-duration: clamp(48s, calc(var(--year-in-seconds) * 165), 130s);
}

.orbit--neptune::after {
    width: 18px;
    height: 18px;
    background: #175e9e;
}

.orbit--pluto {
    width: 940px;
    height: 940px;
    animation-duration: clamp(60s, calc(var(--year-in-seconds) * 248), 150s);
    opacity: 0.6;
}

.orbit--pluto::after {
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.85);
}

@keyframes orbit-spin {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    to {
        transform: translate(-50%, -50%) rotate(-360deg);
    }
}

@media (max-width: 1024px) {
    .exoplanets {
        padding: 56px 0 28px;
    }

    .exoplanets-container {
        width: 90%;
        padding: 32px 48px 120px;
        border-radius: 56px;
    }

    .exo-section {
        padding: 72px 18px 140px;
        margin-top: -16px;
    }
}

@media (max-width: 720px) {
    .exoplanets-container {
        padding: 28px 24px 100px;
        border-radius: 44px;
    }

    .exo-content {
        flex-direction: column;
    }

    .exo-description {
        max-width: 520px;
        text-align: center;
        align-items: center;
    }

    .exo-facts li {
        text-align: center;
    }
}