:root {
    --primary: #00ffff;
    --bg-overlay: rgba(10, 15, 30, 0.6);
    --panel-bg: rgba(15, 20, 40, 0.85);
}

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

body, html {
    width: 100%;
    min-height: 100vh;
    font-family: 'Space Grotesk', sans-serif;
    background-color: #000;
    color: #fff;
    touch-action: none; /* Prevents pull-to-refresh on mobile */
}

/* 2D Universe Container */
#universe {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background-image: url('bg_nebula.png');
    background-size: cover;
    background-position: center;
}

#system-center {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    will-change: transform;
}

.sun {
    position: absolute;
    width: 50px;
    height: 50px;
    background: #ffffee;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 40px #ffffff, 0 0 100px rgba(255, 255, 255, 0.2);
}

.orbit-path {
    position: absolute;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.planet-wrapper {
    position: absolute;
    transform: translate(-50%, -50%);
    cursor: pointer;
    will-change: left, top;
    z-index: 2;
}

.planet {
    border-radius: 50%;
    box-shadow: inset -5px -5px 15px rgba(0,0,0,0.6), 0 0 15px currentColor;
    transition: transform 0.2s;
}

.planet-wrapper:hover .planet {
    transform: scale(1.2);
}

/* UI Overlay */
#ui-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none; /* Let clicks pass through to 3D canvas */
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    padding: 20px;
    text-align: center;
    background: linear-gradient(to bottom, rgba(0,0,0,0.8) 0%, transparent 100%);
}

header h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: 2px;
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
    margin-bottom: 5px;
}

header h1 span {
    color: var(--primary);
}

header p {
    font-size: 0.9rem;
    color: #aaa;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* Loading Screen */
#loading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #050510;
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: var(--primary);
    transition: opacity 1s ease;
}

/* Info Panel (Bottom Sheet on Mobile, Side Panel on Desktop) */
#info-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 20;
    background: var(--panel-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    padding: 30px 20px 40px;
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: auto; /* Re-enable interactions for the panel */
    box-shadow: 0 -10px 40px rgba(0,0,0,0.5);
    max-height: 90vh;
    overflow-y: auto;
}

#info-panel.visible {
    transform: translateY(0);
}

#close-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    background: transparent;
    border: none;
    color: #fff;
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.2s;
}

#close-btn:hover {
    opacity: 1;
}

.panel-content h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.panel-content p#panel-desc {
    color: #ccc;
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 20px;
}

.panel-content h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: #fff;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 5px;
}

#panel-stories {
    list-style: none;
    margin-bottom: 25px;
}

#panel-stories li {
    padding: 8px 0;
    color: #aaa;
    display: flex;
    align-items: center;
}

#panel-stories li::before {
    content: "▶";
    font-size: 0.6rem;
    margin-right: 10px;
    color: var(--genre-color, #fff);
}

.explore-btn {
    width: 100%;
    padding: 15px;
    background: transparent;
    border: 2px solid var(--genre-color, #fff);
    color: #fff;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.1rem;
    text-transform: uppercase;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 0 10px rgba(0,0,0,0);
}

.explore-btn:active {
    background: var(--genre-color, #fff);
    color: #000;
}

/* Planet Label styling */
.planet-label {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'Orbitron', sans-serif;
    color: #fff;
    font-size: 12px;
    padding: 4px 8px;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    pointer-events: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    backdrop-filter: blur(4px);
    margin-top: 10px;
    white-space: nowrap;
}

/* View Toggle Button */
#view-toggle-btn {
    position: absolute;
    bottom: 30px;
    right: 20px;
    background: rgba(15, 20, 40, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    font-family: 'Space Grotesk', sans-serif;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    z-index: 50;
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 8px;
    backdrop-filter: blur(5px);
    transition: all 0.3s ease;
}

#view-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
}

/* List View */
#list-view {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 5, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 15;
    pointer-events: auto;
    display: flex;
    flex-direction: column;
    padding: 80px 20px 20px;
    overflow-y: auto;
    opacity: 1;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

#list-view.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.list-header {
    text-align: center;
    margin-bottom: 30px;
}

.list-header h2 {
    font-family: 'Orbitron', sans-serif;
    color: var(--primary);
    font-size: 2rem;
    margin-bottom: 5px;
}

.list-header p {
    color: #aaa;
}

.list-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
    padding-bottom: 40px;
}

.genre-card {
    background: rgba(20, 25, 45, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.3s;
}

.genre-card:hover {
    border-color: rgba(255, 255, 255, 0.3);
}

.genre-card-header {
    padding: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.genre-card-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 10px;
}

.genre-color-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    box-shadow: 0 0 8px currentColor;
}

.genre-card-toggle {
    font-size: 1.5rem;
    color: #aaa;
    transition: transform 0.3s;
}

.genre-card.expanded .genre-card-toggle {
    transform: rotate(45deg);
    color: #fff;
}

.genre-card-body {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.4s ease-out;
    background: rgba(10, 15, 30, 0.8);
}

.genre-card.expanded .genre-card-body {
    grid-template-rows: 1fr;
}

.genre-card-content {
    overflow: hidden;
}

.genre-card-content-inner {
    padding: 0 20px 20px;
}

.genre-card-desc {
    color: #ccc;
    line-height: 1.5;
    margin-bottom: 15px;
    padding-top: 10px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.genre-card-stories {
    list-style: none;
}

.genre-card-stories li {
    padding: 5px 0;
    color: #aaa;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
}

.genre-card-stories li::before {
    content: "▶";
    font-size: 0.5rem;
    margin-right: 10px;
    color: var(--card-color, #fff);
}

/* Contact Button */
#contact-btn {
    position: absolute;
    bottom: 30px;
    left: 20px;
    background: rgba(15, 20, 40, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    font-family: 'Space Grotesk', sans-serif;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    z-index: 50;
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 8px;
    backdrop-filter: blur(5px);
    transition: all 0.3s ease;
    text-decoration: none;
    font-size: 13.3333px;
}

#contact-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
    color: var(--primary);
}

@keyframes pulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

/* Desktop adaptations */
@media (min-width: 768px) {
    #info-panel {
        width: 400px;
        height: 100%;
        bottom: 0;
        left: auto;
        right: 0;
        border-top-left-radius: 20px;
        border-top-right-radius: 0;
        transform: translateX(100%);
        padding-top: 60px;
    }
    
    #info-panel.visible {
        transform: translateX(0);
    }
    
    .explore-btn:hover {
        background: var(--genre-color, #fff);
        color: #000;
        box-shadow: 0 0 15px var(--genre-color, #fff);
    }
}