:root {
    --bg-dark: #07060c;
    --panel-bg: rgba(13, 11, 23, 0.85);
    --border-color: rgba(147, 51, 234, 0.3);
    --border-color-glow: rgba(147, 51, 234, 0.6);
    
    --neon-blue: #00f3ff;
    --neon-pink: #ff007f;
    --neon-gold: #ffd700;
    --neon-green: #39ff14;
    --neon-red: #ff3333;
    --neon-purple: #9333ea;
    
    --text-primary: #f3f1f7;
    --text-secondary: #a39eb8;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
    background-image: radial-gradient(circle at center, #1b132e 0%, #07060c 100%);
}

#game-container {
    position: relative;
    width: 768px;
    height: 768px;
    max-width: 96vw;
    max-height: 96vh;
    aspect-ratio: 1 / 1;
    border: 4px solid var(--neon-purple);
    box-shadow: 0 0 30px rgba(147, 51, 234, 0.4), inset 0 0 20px rgba(147, 51, 234, 0.2);
    border-radius: 16px;
    overflow: hidden;
    background-color: #0b0914;
}

#game-canvas {
    display: block;
    width: 100%;
    height: 100%;
    background-color: #0c0a15;
}

#crt-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.15) 50%);
    background-size: 100% 4px;
    pointer-events: none;
    z-index: 10;
    opacity: 0.85;
}

/* SCREEN OVERLAYS */
.screen-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 5;
    padding: 40px;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

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

/* MAIN MENU */
.logo-container {
    text-align: center;
    margin-bottom: 50px;
}

.logo-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 64px;
    font-weight: 900;
    letter-spacing: 4px;
    background: linear-gradient(to bottom, #fff 20%, var(--neon-blue) 60%, var(--neon-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 15px rgba(0, 243, 255, 0.5));
    animation: titleGlow 2s infinite alternate;
}

.logo-subtitle {
    font-family: 'Orbitron', sans-serif;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 8px;
    color: var(--neon-blue);
    margin-top: 10px;
    text-shadow: 0 0 8px rgba(0, 243, 255, 0.6);
}

.menu-options {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 320px;
}

.menu-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    padding: 16px 24px;
    cursor: pointer;
    font-family: 'Orbitron', sans-serif;
    font-size: 16px;
    font-weight: 700;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.menu-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: 0.5s;
}

.menu-btn:hover::before {
    left: 100%;
}

.menu-btn:hover {
    border-color: var(--neon-blue);
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.4);
    transform: translateY(-2px);
    background: rgba(0, 243, 255, 0.05);
}

.menu-btn:active {
    transform: translateY(1px);
}

.btn-subtext {
    font-family: 'Outfit', sans-serif;
    font-size: 11px;
    font-weight: 400;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-top: 4px;
    letter-spacing: 1px;
}

.neon-pulse {
    animation: neonPulsePurple 1.5s infinite alternate;
}

.neon-pulse-red {
    border-color: rgba(255, 51, 51, 0.4);
    animation: neonPulseRed 1.5s infinite alternate;
}

.neon-pulse-gold {
    border-color: rgba(255, 215, 0, 0.4);
    animation: neonPulseGold 1.5s infinite alternate;
}

.neon-pulse-red:hover {
    border-color: var(--neon-red);
    box-shadow: 0 0 15px rgba(255, 51, 51, 0.5);
    background: rgba(255, 51, 51, 0.05);
}

.neon-pulse-gold:hover {
    border-color: var(--neon-gold);
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.5);
    background: rgba(255, 215, 0, 0.05);
}

.menu-footer {
    position: absolute;
    bottom: 24px;
    font-family: 'Orbitron', sans-serif;
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--text-secondary);
    opacity: 0.6;
}

/* CAMPAIGN LEVEL SELECTOR */
.screen-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 36px;
    font-weight: 900;
    margin-bottom: 40px;
    letter-spacing: 2px;
}

.neon-text {
    color: var(--text-primary);
    text-shadow: 0 0 10px rgba(147, 51, 234, 0.8);
}

.neon-goldtext {
    color: var(--neon-gold);
    text-shadow: 0 0 12px rgba(255, 215, 0, 0.6);
}

.level-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 480px;
    margin-bottom: 40px;
}

.level-card {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 24px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.level-card:hover:not(.locked) {
    border-color: var(--neon-blue);
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.3);
    background: rgba(0, 243, 255, 0.03);
    transform: translateX(5px);
}

.level-card.locked {
    opacity: 0.4;
    cursor: not-allowed;
    background: rgba(0, 0, 0, 0.2);
}

.level-num {
    font-family: 'Orbitron', sans-serif;
    font-size: 32px;
    font-weight: 900;
    color: var(--neon-purple);
    width: 60px;
}

.level-card:hover:not(.locked) .level-num {
    color: var(--neon-blue);
    text-shadow: 0 0 8px rgba(0, 243, 255, 0.5);
}

.level-info {
    flex-grow: 1;
}

.level-name {
    font-family: 'Orbitron', sans-serif;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.level-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
    max-width: 320px;
}

.level-status {
    position: absolute;
    right: 24px;
    font-family: 'Orbitron', sans-serif;
    font-size: 11px;
    font-weight: 700;
    color: var(--neon-pink);
    letter-spacing: 1px;
}

.level-card:not(.locked) .level-status {
    color: var(--neon-green);
}

.back-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: 'Orbitron', sans-serif;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    padding: 10px 20px;
    transition: all 0.2s ease;
}

.back-btn:hover {
    color: var(--text-primary);
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

/* HUD (Referencing Killer Bean Unleashed Interface Layout) */
#hud {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 4;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 16px;
    transition: opacity 0.3s ease;
}

.hud-top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 10px;
}

/* HUD Top Left Indicators */
.ref-hud-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Cyan Diamond Weapon Selector */
.bullet-diamond-btn {
    position: relative;
    width: 60px;
    height: 60px;
    background: radial-gradient(circle, #062b3a 0%, #03111c 100%);
    border: 3.5px solid #00f3ff;
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.6), inset 0 0 10px rgba(0, 243, 255, 0.4);
    transform: rotate(45deg);
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 8px;
    cursor: pointer;
    pointer-events: auto;
}

.bullet-icon-graphic {
    width: 22px;
    height: 10px;
    background: #c0c0c0;
    border-radius: 0 5px 5px 0;
    border: 1.5px solid #000;
    position: absolute;
    transform: rotate(-45deg) translate(-2px, -4px);
}

.bullet-icon-graphic::before {
    content: '';
    position: absolute;
    left: -8px; top: -1.5px;
    width: 8px; height: 10px;
    background: #d4af37; /* Brass shell casing */
    border-radius: 2px 0 0 2px;
}

#hud-ammo-count {
    position: absolute;
    bottom: 2px; right: 2px;
    font-family: 'Orbitron', sans-serif;
    font-size: 11px;
    font-weight: 900;
    color: #fff;
    text-shadow: 0 0 5px #000;
    transform: rotate(-45deg);
}

/* Lives counter */
.lives-counter-badge {
    display: flex;
    align-items: center;
    gap: 8px;
}

.avatar-bean-mini {
    width: 14px;
    height: 22px;
    background: #ff003c;
    border-radius: 7px;
    border: 1.5px solid #fff;
    box-shadow: 0 0 6px #ff003c;
    position: relative;
}

.avatar-bean-mini::after {
    content: '';
    position: absolute;
    top: 5px; right: -1px;
    width: 9px; height: 3px;
    background: #000;
    border-radius: 1px;
}

/* Health Heart indicator */
.health-heart-badge {
    display: flex;
    align-items: center;
    gap: 8px;
}

.heart-symbol {
    font-size: 28px;
    color: #ff3333;
    text-shadow: 0 0 10px rgba(255, 51, 51, 0.7);
    animation: heartPulse 0.8s infinite alternate;
}

@keyframes heartPulse {
    from { transform: scale(1); }
    to { transform: scale(1.15); }
}

.digital-label {
    font-family: 'Orbitron', sans-serif;
    font-size: 28px;
    font-weight: 900;
    color: #fff;
    text-shadow: 2px 2px 0px #000, 0 0 10px rgba(0, 0, 0, 0.5);
    letter-spacing: 1px;
}

/* Score display in Center */
.score-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(22, 18, 14, 0.9);
    border: 2px solid var(--neon-gold);
    border-radius: 8px;
    padding: 6px 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.digital-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 20px;
    font-weight: 900;
    color: var(--neon-gold);
    text-shadow: 0 0 8px rgba(255, 215, 0, 0.4);
    letter-spacing: 2px;
}

/* Pause Button (Top Right) */
.pause-btn-frame {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 3.5px solid #888;
    background: radial-gradient(circle, #555 0%, #1a1a1a 100%);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.6), inset 0 0 8px #000;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    pointer-events: auto;
    transition: transform 0.1s ease;
}

.pause-btn-frame:active {
    transform: scale(0.9);
}

.pause-icon {
    width: 12px;
    height: 16px;
    border-left: 4px solid #fff;
    border-right: 4px solid #fff;
    box-sizing: border-box;
}

/* VIRTUAL SCREEN BUTTONS OVERLAYS */
.virtual-controls-container {
    position: absolute;
    bottom: 24px;
    left: 20px;
    right: 20px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    width: calc(100% - 40px);
}

/* Left controls: Cyan arrows */
.movement-arrows-rack {
    display: flex;
    gap: 20px;
    pointer-events: auto;
}

.arrow-btn {
    width: 60px;
    height: 60px;
    background: rgba(0, 243, 255, 0.05);
    border: 3.5px solid #00f3ff;
    border-radius: 12px;
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.4);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.1s ease;
    transform: rotate(45deg);
}

.arrow-btn:active {
    transform: scale(0.9) rotate(45deg);
    background: rgba(0, 243, 255, 0.2);
}

.arrow-icon-left {
    width: 16px;
    height: 16px;
    border-bottom: 4px solid #00f3ff;
    border-left: 4px solid #00f3ff;
    transform: rotate(-45deg) translate(2px, -2px);
}

.arrow-icon-right {
    width: 16px;
    height: 16px;
    border-top: 4px solid #00f3ff;
    border-right: 4px solid #00f3ff;
    transform: rotate(-45deg) translate(-2px, 2px);
}

/* Right controls: action circles */
.actions-rack {
    display: flex;
    align-items: flex-end;
    gap: 16px;
    pointer-events: auto;
}

.action-circle-btn {
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.1s ease;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
}

.action-circle-btn:active {
    transform: scale(0.9);
}

/* Green zoom crosshair button */
.green-btn {
    width: 50px;
    height: 50px;
    border: 3px solid #39ff14;
    background: rgba(57, 255, 20, 0.08);
    box-shadow: 0 0 15px rgba(57, 255, 20, 0.4);
}

.green-btn:active {
    background: rgba(57, 255, 20, 0.25);
}

.crosshair-icon-inner {
    width: 16px;
    height: 16px;
    border: 2px solid #39ff14;
    border-radius: 50%;
    position: relative;
}

.crosshair-icon-inner::before, .crosshair-icon-inner::after {
    content: '';
    position: absolute;
    background: #39ff14;
}

.crosshair-icon-inner::before {
    left: 7px; top: -5px;
    width: 2px; height: 26px;
}

.crosshair-icon-inner::after {
    left: -5px; top: 7px;
    width: 26px; height: 2px;
}

/* Blue jump arrow button */
.blue-btn {
    width: 60px;
    height: 60px;
    border: 3.5px solid #0055ff;
    background: rgba(0, 85, 255, 0.08);
    box-shadow: 0 0 20px rgba(0, 85, 255, 0.4);
}

.blue-btn:active {
    background: rgba(0, 85, 255, 0.25);
}

.arrow-icon-up {
    width: 14px;
    height: 14px;
    border-top: 4px solid #fff;
    border-left: 4px solid #fff;
    transform: rotate(45deg) translate(3px, 3px);
}

/* Red fire button (Largest) */
.red-btn {
    width: 76px;
    height: 76px;
    border: 4px solid #ff3366;
    background: rgba(255, 51, 102, 0.1);
    box-shadow: 0 0 25px rgba(255, 51, 102, 0.5);
}

.red-btn:active {
    background: rgba(255, 51, 102, 0.25);
}

.pistol-icon-inner {
    width: 28px;
    height: 15px;
    background: #ff3366;
    border-radius: 2px;
    position: relative;
    transform: translate(-1px, -3px);
}

.pistol-icon-inner::before {
    content: '';
    position: absolute;
    left: 6px; top: 12px;
    width: 8px; height: 12px;
    background: #ff3366;
    transform: rotate(15deg);
}

.pistol-icon-inner::after {
    content: '';
    position: absolute;
    left: 14px; top: 15px;
    width: 6px; height: 6px;
    border: 2px solid #ff3366;
    border-radius: 50%;
    background: transparent;
} 


/* Instructions manual layout inside overlay */
.instructions-content {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 520px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.instruction-row {
    display: flex;
    align-items: center;
    gap: 16px;
}

.key-caps {
    display: flex;
    gap: 6px;
    min-width: 100px;
    justify-content: flex-end;
}

.key-cap {
    background: linear-gradient(185deg, #2a2542, #141124);
    border: 1.5px solid rgba(255, 255, 255, 0.15);
    border-bottom: 4px solid rgba(0, 0, 0, 0.5);
    border-radius: 6px;
    padding: 4px 10px;
    font-family: 'Orbitron', sans-serif;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-primary);
    box-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.inst-text {
    font-size: 13px;
    color: var(--text-secondary);
}

.instruction-pro-tip {
    margin-top: 10px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.instruction-pro-tip strong {
    color: var(--neon-gold);
}

/* UPGRADES SHOP DECK */
#upgrade-cards-container {
    display: flex;
    gap: 20px;
    justify-content: center;
    width: 600px;
    margin-top: 20px;
}

.upgrade-card {
    flex: 1;
    background: rgba(255, 255, 255, 0.02);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.upgrade-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, transparent 100%);
    pointer-events: none;
}

.upgrade-card:hover {
    border-color: var(--neon-gold);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
    transform: translateY(-8px);
    background: rgba(255, 215, 0, 0.03);
}

.upgrade-icon-bg {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(147, 51, 234, 0.1);
    border: 1px dashed var(--neon-purple);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
    font-size: 24px;
    transition: all 0.3s ease;
}

.upgrade-card:hover .upgrade-icon-bg {
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid var(--neon-gold);
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.2);
}

.upgrade-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.upgrade-card:hover .upgrade-title {
    color: var(--neon-gold);
}

.upgrade-desc {
    font-size: 11px;
    color: var(--text-secondary);
    line-height: 1.5;
    flex-grow: 1;
}

.upgrade-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* GAME OVER */
.game-over-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 64px;
    font-weight: 900;
    letter-spacing: 4px;
    margin-bottom: 10px;
}

.neon-red {
    color: var(--neon-red);
    text-shadow: 0 0 20px rgba(255, 51, 51, 0.7);
    animation: titleGlowRed 1s infinite alternate;
}

.game-over-subtitle {
    font-size: 13px;
    letter-spacing: 2px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.stats-box {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px 30px;
    width: 320px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 40px;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    font-family: 'Orbitron', sans-serif;
    font-size: 14px;
    letter-spacing: 1px;
}

.stat-row span:first-child {
    color: var(--text-secondary);
}

.stat-row span:last-child {
    font-weight: 700;
}

/* VICTORY */
.victory-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 50px;
    font-weight: 900;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.victory-subtitle {
    font-size: 13px;
    letter-spacing: 3px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

#gameplay-prompt {
    position: absolute;
    left: 50%;
    bottom: 90px;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.85);
    border: 1px solid var(--neon-purple);
    box-shadow: 0 0 10px rgba(147, 51, 234, 0.3);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 10px 20px;
    font-family: 'Orbitron', sans-serif;
    font-size: 11px;
    letter-spacing: 1.5px;
    text-align: center;
    white-space: nowrap;
    animation: blinkGlow 1.5s infinite;
    pointer-events: none;
    z-index: 3;
}

/* ANIMATIONS */
@keyframes titleGlow {
    from {
        filter: drop-shadow(0 0 10px rgba(255, 0, 127, 0.5));
    }
    to {
        filter: drop-shadow(0 0 20px rgba(255, 0, 127, 0.8)) drop-shadow(0 0 30px rgba(147, 51, 234, 0.4));
    }
}

@keyframes titleGlowRed {
    from {
        text-shadow: 0 0 15px rgba(255, 51, 51, 0.6);
    }
    to {
        text-shadow: 0 0 25px rgba(255, 51, 51, 0.9), 0 0 35px rgba(147, 51, 234, 0.3);
    }
}

@keyframes neonPulsePurple {
    from {
        box-shadow: 0 0 4px rgba(147, 51, 234, 0.3);
        border-color: rgba(147, 51, 234, 0.3);
    }
    to {
        box-shadow: 0 0 15px rgba(147, 51, 234, 0.7);
        border-color: var(--neon-purple);
    }
}

@keyframes neonPulseRed {
    from {
        box-shadow: 0 0 4px rgba(255, 51, 51, 0.3);
        border-color: rgba(255, 51, 51, 0.3);
    }
    to {
        box-shadow: 0 0 15px rgba(255, 51, 51, 0.7);
        border-color: var(--neon-red);
    }
}

@keyframes neonPulseGold {
    from {
        box-shadow: 0 0 4px rgba(255, 215, 0, 0.3);
        border-color: rgba(255, 215, 0, 0.3);
    }
    to {
        box-shadow: 0 0 15px rgba(255, 215, 0, 0.7);
        border-color: var(--neon-gold);
    }
}

@keyframes flashingRedGold {
    0% {
        color: #ff3333;
        text-shadow: 0 0 15px rgba(255, 51, 51, 0.8);
    }
    100% {
        color: var(--neon-gold);
        text-shadow: 0 0 20px rgba(255, 215, 0, 0.9);
    }
}

@keyframes blinkGlow {
    0%, 100% {
        opacity: 0.8;
        box-shadow: 0 0 5px rgba(147, 51, 234, 0.2);
    }
    50% {
        opacity: 1;
        box-shadow: 0 0 15px rgba(147, 51, 234, 0.6);
    }
}