:root {
    --primary: #00ffff;
    --bg-overlay: rgba(10, 15, 30, 0.6);
    --panel-bg: rgba(12, 17, 36, 0.88);
}

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

body, html {
    width: 100%;
    min-height: 100vh;
    font-family: 'Space Grotesk', -apple-system, sans-serif;
    background-color: #030611;
    color: #fff;
    overflow-x: hidden;
    touch-action: pan-x pan-y;
}

/* 2D Universe Container */
#universe {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background: radial-gradient(circle at center, #0a1128 0%, #050814 60%, #02040a 100%);
    overflow: hidden;
}

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

.sun {
    position: absolute;
    width: 54px;
    height: 54px;
    background: #ffffee;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 45px #00ffff, 0 0 100px rgba(0, 255, 255, 0.4), 0 0 140px rgba(255, 255, 255, 0.2);
    cursor: pointer;
}

.sun-core {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: radial-gradient(circle, #ffffff 40%, #00ffff 100%);
}

.orbit-path {
    position: absolute;
    border: 1px solid rgba(0, 255, 255, 0.12);
    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 16px currentColor;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.planet-wrapper:hover .planet {
    transform: scale(1.3);
    box-shadow: inset -5px -5px 15px rgba(0,0,0,0.4), 0 0 28px currentColor;
}

.planet-label {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'Orbitron', sans-serif;
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    background: rgba(3, 6, 17, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 4px;
    pointer-events: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    backdrop-filter: blur(4px);
    margin-top: 8px;
    white-space: nowrap;
}

/* UI Overlay */
#ui-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    padding: 24px 20px 10px;
    text-align: center;
    background: linear-gradient(to bottom, rgba(3,6,17,0.9) 0%, transparent 100%);
    pointer-events: auto;
}

header h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.2rem;
    font-weight: 900;
    letter-spacing: 2.5px;
    text-shadow: 0 0 12px rgba(0, 255, 255, 0.6);
    margin-bottom: 4px;
}

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

header p {
    font-size: 0.85rem;
    color: #00ffff;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 600;
    opacity: 0.9;
}

/* Loading Screen */
#loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #030611;
    z-index: 100;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.4rem;
    color: var(--primary);
    transition: opacity 0.8s ease;
    gap: 12px;
}

/* Contact Button (Bottom Left) */
#contact-btn {
    position: fixed;
    bottom: 25px;
    left: 20px;
    background: rgba(12, 17, 36, 0.85);
    border: 1px solid rgba(0, 255, 255, 0.3);
    color: #fff;
    font-family: 'Space Grotesk', sans-serif;
    padding: 10px 16px;
    border-radius: 8px;
    cursor: pointer;
    z-index: 30;
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 8px;
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 600;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}

#contact-btn:hover {
    background: rgba(0, 255, 255, 0.15);
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.3);
}

/* View Toggle Button (Bottom Right) */
#view-toggle-btn {
    position: fixed;
    bottom: 25px;
    right: 20px;
    background: rgba(12, 17, 36, 0.85);
    border: 1px solid rgba(0, 255, 255, 0.3);
    color: #fff;
    font-family: 'Space Grotesk', sans-serif;
    padding: 10px 16px;
    border-radius: 8px;
    cursor: pointer;
    z-index: 30;
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 8px;
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
    font-size: 13.5px;
    font-weight: 600;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}

#view-toggle-btn:hover {
    background: rgba(0, 255, 255, 0.15);
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.3);
}

/* Info Panel */
#info-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 25;
    background: var(--panel-bg);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-top: 1px solid rgba(0, 255, 255, 0.2);
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    padding: 28px 22px 36px;
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: auto;
    box-shadow: 0 -10px 40px rgba(0,0,0,0.7);
    max-height: 85vh;
    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;
    color: var(--primary);
}

.panel-content h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.panel-content p#panel-desc {
    color: #ddd;
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 18px;
}

.panel-content h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.05rem;
    margin-bottom: 10px;
    color: #fff;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 5px;
    letter-spacing: 1px;
}

#panel-stories {
    list-style: none;
    margin-bottom: 20px;
}

#panel-stories li {
    padding: 8px 0;
    color: #bbb;
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: color 0.2s;
    font-size: 0.95rem;
}

#panel-stories li:hover {
    color: #fff;
}

#panel-stories li::before {
    content: "▶";
    font-size: 0.6rem;
    margin-right: 10px;
    color: var(--genre-color, #00ffff);
}

/* Action Buttons Inside Panel */
.panel-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
}

.explore-btn {
    width: 100%;
    padding: 14px;
    background: transparent;
    border: 2px solid var(--genre-color, #00ffff);
    color: #fff;
    font-family: 'Orbitron', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 1px;
}

.explore-btn:hover {
    background: var(--genre-color, #00ffff);
    color: #030611;
    box-shadow: 0 0 20px var(--genre-color, #00ffff);
}

.secondary-action-btn {
    width: 100%;
    padding: 10px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #ccc;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.9rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.secondary-action-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

/* Reader Modal Overlay */
#reader-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(2, 4, 10, 0.96);
    backdrop-filter: blur(16px);
    z-index: 40;
    display: none;
    overflow-y: auto;
    padding: 40px 20px;
}

#reader-modal.active {
    display: block;
}

.reader-container {
    max-width: 760px;
    margin: 0 auto;
    background: rgba(12, 17, 36, 0.7);
    border: 1px solid rgba(0, 255, 255, 0.3);
    border-radius: 12px;
    padding: 30px 25px;
    box-shadow: 0 0 35px rgba(0, 255, 255, 0.15);
}

/* Directory List View */
#list-view {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(3, 6, 17, 0.97);
    backdrop-filter: blur(14px);
    z-index: 15;
    pointer-events: auto;
    display: flex;
    flex-direction: column;
    padding: 90px 20px 40px;
    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: 25px;
}

.list-header h2 {
    font-family: 'Orbitron', sans-serif;
    color: var(--primary);
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.list-header p {
    color: #aaa;
    font-size: 0.95rem;
}

.list-container {
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-width: 680px;
    margin: 0 auto;
    width: 100%;
    padding-bottom: 40px;
}

.genre-card {
    background: rgba(15, 20, 42, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    overflow: hidden;
    transition: border-color 0.3s;
}

.genre-card:hover {
    border-color: rgba(0, 255, 255, 0.4);
}

.genre-card-header {
    padding: 18px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.genre-card-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.15rem;
    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 0.35s ease-out;
    background: rgba(8, 12, 28, 0.9);
}

.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: 1.6;
    margin-bottom: 14px;
    padding-top: 10px;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.genre-card-stories {
    list-style: none;
    margin-bottom: 14px;
}

.genre-card-stories li {
    padding: 6px 0;
    color: #aaa;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    cursor: pointer;
}

.genre-card-stories li:hover {
    color: #fff;
}

.genre-card-stories li::before {
    content: "▶";
    font-size: 0.5rem;
    margin-right: 10px;
    color: var(--card-color, #00ffff);
}

@keyframes pulse {
    0% { opacity: 0.5; }
    50% { opacity: 1; }
    100% { opacity: 0.5; }
}

/* Desktop adaptations */
@media (min-width: 768px) {
    header h1 {
        font-size: 2.8rem;
    }

    #info-panel {
        width: 440px;
        height: 100%;
        bottom: 0;
        left: auto;
        right: 0;
        border-top-left-radius: 20px;
        border-top-right-radius: 0;
        border-left: 1px solid rgba(0, 255, 255, 0.25);
        transform: translateX(100%);
        padding-top: 60px;
    }
    
    #info-panel.visible {
        transform: translateX(0);
    }
}