:root {
    --deep-space-start: #02030f;
    --deep-space-end: #0a0a2a;
    --portal-cyan: #00fff2;
    --glow-orange: #ff9f45;
    --star-white: #ffffff;
    --electric-purple: #8a2be2;
    --dark-violet: #2c0b4d;
    --font-primary: 'Exo 2', sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    background-color: var(--deep-space-start);
}

body {
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    font-family: var(--font-primary);
    color: var(--star-white);
}

.cosmic-canvas {
    position: relative;
    height: 100%;
    width: 100%;
}

.vignette-stage {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 1.5s ease-in-out;
    z-index: 1;
}

#landing-sequence {
    opacity: 1;
    z-index: 10;
    pointer-events: auto;
}

.vignette-stage:target {
    opacity: 1;
    z-index: 10;
    pointer-events: auto;
}

.celestial-backdrop {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--deep-space-start), var(--deep-space-end));
    overflow: hidden;
}

.star-field-layer-1,
.star-field-layer-2 {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(1px 1px at 10% 20%, var(--star-white), transparent),
        radial-gradient(1px 1px at 80% 30%, var(--star-white), transparent),
        radial-gradient(2px 2px at 50% 60%, #ccc, transparent),
        radial-gradient(1px 1px at 25% 85%, #aaa, transparent);
    background-size: 400px 400px;
    opacity: 0.7;
}

.star-field-layer-2 {
    background-size: 800px 800px;
    opacity: 0.4;
    animation: slow-drift 200s linear infinite;
}

@keyframes slow-drift {
    from {
        transform: translate(0, 0);
    }

    to {
        transform: translate(100px, 50px);
    }
}

.milky-way-stream {
    position: absolute;
    top: -25%;
    left: -50%;
    width: 200%;
    height: 150%;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.05) 45%, rgba(255, 255, 255, 0.1) 50%, rgba(255, 255, 255, 0.05) 55%, transparent 70%);
    transform: rotate(-20deg);
    filter: blur(5px);
}

.nebula-cloud-formation {
    position: absolute;
    width: 100vmin;
    height: 100vmin;
    right: -20vmin;
    bottom: -30vmin;
    background: radial-gradient(ellipse at center, rgba(138, 43, 226, 0.1), transparent 70%);
    filter: blur(50px);
}

.solar-flare-glow {
    position: absolute;
    bottom: -50vh;
    left: 50%;
    transform: translateX(-50%);
    width: 150vw;
    height: 100vh;
    background: radial-gradient(ellipse at 50% 100%, rgba(255, 159, 69, 0.2) 0%, transparent 50%);
}

.star-trail-stream {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(1px 50px at 50% 0px, var(--star-white), transparent);
    background-size: 300px 300px;
    opacity: 0;
    animation: rain-fall 2s linear infinite;
    transition: opacity 1s;
}

.star-trail-stream.active {
    opacity: 0.2;
}

@keyframes rain-fall {
    from {
        transform: translateY(-200px);
    }

    to {
        transform: translateY(100vh);
    }
}

.mystical-portal-construct {
    position: relative;
    width: 30vmin;
    height: 30vmin;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    z-index: 100;
}

.portal-vortex-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 2px solid var(--portal-cyan);
    box-shadow: 0 0 10px var(--portal-cyan), inset 0 0 10px var(--portal-cyan);
    animation: portal-swirl 10s linear infinite;
}

.portal-vortex-ring::before {
    content: '';
    position: absolute;
    inset: 10px;
    border: 1px solid var(--electric-purple);
    border-radius: 50%;
    animation: portal-swirl 8s linear infinite reverse;
}

.portal-vortex-ring::after {
    content: '';
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    border: 2px solid var(--portal-cyan);
    opacity: 0;
}

.mystical-portal-construct:hover .portal-vortex-ring::after {
    animation: ripple-wave 1.5s ease-in-out;
}

@keyframes ripple-wave {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }

    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

.portal-event-horizon {
    width: 80%;
    height: 80%;
    border-radius: 50%;
    background: radial-gradient(ellipse at center, rgba(138, 43, 226, 0.2), transparent 70%);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.5s ease-out;
}

.portal-entry-text {
    color: var(--star-white);
    text-shadow: 0 0 8px var(--portal-cyan);
    animation: flicker 4s infinite;
}

.mystical-portal-construct:hover .portal-vortex-ring {
    transform: scale(1.1);
    box-shadow: 0 0 20px var(--portal-cyan), inset 0 0 20px var(--portal-cyan);
}

.mystical-portal-construct:hover .portal-event-horizon {
    transform: scale(0.95);
}

@keyframes portal-swirl {
    to {
        transform: rotate(360deg);
    }
}

@keyframes flicker {

    0%,
    18%,
    22%,
    25%,
    53%,
    57%,
    100% {
        opacity: 1;
    }

    20%,
    24%,
    55% {
        opacity: 0.4;
    }
}

#warp-sequence {
    background: radial-gradient(circle at center, var(--dark-violet), var(--deep-space-start));
}

.warp-continuum-field {
    position: absolute;
    width: 100%;
    height: 100%;
    perspective: 400px;
}

.warp-layer {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100vmax;
    height: 100vmax;
    border-radius: 50%;
    border: 2px solid var(--electric-purple);
    transform: translate(-50%, -50%) translateZ(-800px);
    opacity: 0;
    animation: travel 4s cubic-bezier(0.5, 0, 1, 1) infinite;
}

.warp-layer.two {
    animation-delay: 1.33s;
}

.warp-layer.three {
    animation-delay: 2.66s;
}

@keyframes travel {
    0% {
        transform: translate(-50%, -50%) translateZ(-800px);
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    100% {
        transform: translate(-50%, -50%) translateZ(400px);
        opacity: 0;
    }
}

.warp-exit-link,
.return-link,
.credits-link {
    position: absolute;
    padding: 1rem 2rem;
    border: 1px solid var(--portal-cyan);
    color: var(--portal-cyan);
    text-decoration: none;
    border-radius: 5px;
    transition: 0.3s;
    background: rgba(2, 3, 15, 0.3);
    backdrop-filter: blur(5px);
    text-shadow: 0 0 4px var(--portal-cyan);
    z-index: 100;
}

.return-link,
.credits-link {
    bottom: 5vh;
}

.warp-exit-link {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.warp-exit-link:hover,
.return-link:hover,
.credits-link:hover {
    background-color: var(--portal-cyan);
    color: var(--deep-space-start);
}

.destination-title {
    position: absolute;
    top: 10vh;
    font-size: 4vmin;
    color: var(--portal-cyan);
    text-shadow: 0 0 15px var(--portal-cyan);
    letter-spacing: 0.2em;
}

.solar-system-navigator {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 3vw;
    width: 90%;
}

.planetoid-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--star-white);
    transition: transform 0.4s;
    animation: gentle-float 8s ease-in-out infinite;
    position: relative;
}

.planetoid-card:hover {
    transform: scale(1.15);
    animation-play-state: paused;
}

@keyframes gentle-float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

#nav-mercury {
    animation-delay: -1s;
}

#nav-venus {
    animation-delay: -2s;
}

#nav-earth {
    animation-delay: -3s;
}

#nav-mars {
    animation-delay: -4s;
}

#nav-jupiter {
    animation-delay: -5s;
}

#nav-saturn {
    animation-delay: -6s;
}

#nav-uranus {
    animation-delay: -7s;
}

#nav-neptune {
    animation-delay: -8s;
}

.planetoid-body {
    border-radius: 50%;
    position: relative;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.5), 0 0 10px transparent;
    transition: box-shadow 0.4s;
    margin-bottom: 1rem;
}

.planetoid-card:hover .planetoid-body {
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.5), 0 0 25px var(--portal-cyan);
}

.planetoid-info-box {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s, transform 0.4s;
    position: absolute;
    top: 100%;
    width: 200px;
    text-align: center;
}

.planetoid-card:hover .planetoid-info-box {
    opacity: 1;
    transform: translateY(0);
}

.planetoid-tag {
    font-size: 1.8vmin;
    text-shadow: 0 0 5px var(--star-white);
    font-weight: bold;
}

.planetoid-desc {
    font-size: 1.4vmin;
    color: #ccc;
    margin-top: 5px;
}


.sun-body {
    width: 10vmin;
    height: 10vmin;
    background: radial-gradient(circle, #ffd700, var(--glow-orange));
}

.mercury-body {
    width: 4vmin;
    height: 4vmin;
    background: radial-gradient(circle, #e5e5e5, #888);
}

.venus-body {
    width: 6vmin;
    height: 6vmin;
    background: radial-gradient(circle, #f5dcb3, #b5926f);
}

.earth-body {
    width: 6.5vmin;
    height: 6.5vmin;
    background: radial-gradient(circle, #6b93d6, #4468a3);
}

.mars-body {
    width: 5vmin;
    height: 5vmin;
    background: radial-gradient(circle, #c1440e, #8c2800);
}

.jupiter-body {
    width: 9vmin;
    height: 9vmin;
    background: radial-gradient(circle, #e0c8b0, #bfa58a);
}

.saturn-body {
    width: 8vmin;
    height: 8vmin;
    background: radial-gradient(circle, #f0e6d6, #c5ab86);
}

.uranus-body {
    width: 7vmin;
    height: 7vmin;
    background: radial-gradient(circle, #afeeee, #96cddc);
}

.neptune-body {
    width: 7vmin;
    height: 7vmin;
    background: radial-gradient(circle, #3f54ba, #2f3e8a);
}

.planet-view-stage {
    transition: opacity 2.5s ease-in-out;
}

.planet-focus-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.planet-body-detailed {
    width: 40vmin;
    height: 40vmin;
    border-radius: 50%;
    animation: float-orbit 12s ease-in-out infinite;
}

@keyframes float-orbit {

    0%,
    100% {
        transform: translateY(0) rotate(0);
    }

    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

.sun-detailed {
    background: radial-gradient(circle, #fffbd5, #ff8800);
    box-shadow: 0 0 50px var(--glow-orange);
}

.mercury-detailed {
    background: radial-gradient(circle, #b8b8b8, #6d6d6d);
    box-shadow: 0 0 40px #888;
}

.venus-detailed {
    background: radial-gradient(circle, #d4a77a, #9e6b4d);
    box-shadow: 0 0 40px #b5926f;
}

.earth-detailed {
    background: radial-gradient(circle at 70% 30%, #a8c3d1, #0077be 60%, #0c3e2e 90%);
    box-shadow: 0 0 40px #0077be;
}

.mars-detailed {
    background: radial-gradient(circle, #d45c20, #8c2800);
    box-shadow: 0 0 40px #c1440e;
}

.jupiter-detailed {
    background: radial-gradient(circle, #e0c8b0, #bfa58a);
    box-shadow: 0 0 40px #bfa58a;
}

.saturn-detailed {
    background: radial-gradient(circle, #f0e5c9, #b49b77);
    box-shadow: 0 0 40px #d1c09e;
}

.uranus-detailed {
    background: radial-gradient(circle, #cdeff3, #7fc0d0);
    box-shadow: 0 0 40px #96cddc;
}

.neptune-detailed {
    background: radial-gradient(circle, #5b79d8, #2f3e8a);
    box-shadow: 0 0 40px #3f54ba;
}

.moon-orbit {
    position: absolute;
    width: 150%;
    height: 150%;
    top: -25%;
    left: -25%;
    animation: slow-spin 30s linear infinite;
}

.moon-satellite {
    width: 5vmin;
    height: 5vmin;
    background: radial-gradient(circle, #eee, #999);
    border-radius: 50%;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.saturn-ring-system {
    position: absolute;
    width: 180%;
    height: 180%;
    top: -40%;
    left: -40%;
    border-radius: 50%;
    border: 4vmin solid rgba(240, 229, 201, 0.4);
    border-left-color: transparent;
    border-right-color: transparent;
    transform: rotateX(70deg);
}

@keyframes slow-spin {
    to {
        transform: rotate(360deg);
    }
}

.data-panel-left,
.data-panel-right {
    position: absolute;
    padding: 2rem;
    width: 280px;
    background: rgba(3, 3, 26, 0.7);
    backdrop-filter: blur(8px);
    border: 1px solid var(--portal-cyan);
    border-radius: 5px;
    opacity: 0;
    animation: slide-in 1.5s 1s forwards;
    text-shadow: 0 0 5px var(--star-white);
}

.data-panel-left {
    top: 20vh;
    left: 5vw;
}

.data-panel-right {
    top: 20vh;
    right: 5vw;
}

.data-panel-left h3,
.data-panel-right h3 {
    color: var(--portal-cyan);
    margin-bottom: 1rem;
    text-shadow: 0 0 8px var(--portal-cyan);
}

.data-panel-left ul,
.data-panel-right ul {
    list-style: none;
}

.data-panel-left li,
.data-panel-right li {
    margin-bottom: 0.5rem;
}

@keyframes slide-in {
    to {
        opacity: 1;
    }
}

.info-point {
    position: absolute;
}

.p-earth-1 {
    top: 30%;
    left: -10%;
}

.p-earth-2 {
    top: 70%;
    left: 90%;
}

.info-orb {
    width: 2vmin;
    height: 2vmin;
    border-radius: 50%;
    background-color: var(--portal-cyan);
    animation: pulse-orb 2s infinite;
}

@keyframes pulse-orb {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 255, 242, 0.7);
    }

    70% {
        box-shadow: 0 0 0 15px transparent;
    }

    100% {
        box-shadow: 0 0 0 0 transparent;
    }
}

.info-box-content {
    position: absolute;
    top: 100%;
    left: 100%;
    width: 200px;
    padding: 1rem;
    background: rgba(3, 3, 26, 0.8);
    border: 1px solid var(--portal-cyan);
    opacity: 0;
    transform: scale(0.9);
    transition: 0.4s;
    pointer-events: none;
    text-shadow: 0 0 5px var(--star-white);
    border-radius: 5px;
}

.info-point:hover .info-box-content {
    opacity: 1;
    transform: scale(1);
}

.info-box-content h4 {
    color: var(--portal-cyan);
    margin-bottom: 0.5rem;
}

#credits-sequence .portal-background-echo {
    width: 50vmin;
    height: 50vmin;
    position: absolute;
    background: radial-gradient(ellipse, var(--portal-cyan) 0%, transparent 70%);
    opacity: 0.05;
    filter: blur(20px);
}

.credits-hologram {
    padding: 3rem 4rem;
    background: rgba(10, 10, 42, 0.5);
    backdrop-filter: blur(10px);
    border: 1px solid var(--portal-cyan);
    text-align: center;
    border-radius: 10px;
}

.credits-title {
    color: var(--portal-cyan);
    text-shadow: 0 0 10px var(--portal-cyan);
    margin-bottom: 1rem;
}

.credits-text {
    color: var(--star-white);
    text-shadow: 0 0 5px var(--star-white);
}