:root {
    --bg-dark: #f0f2f5;
    --bg-glass: rgba(255, 255, 255, 0.85);
    --border-glass: rgba(0, 0, 0, 0.09);
    --text-primary: #1e2229;
    --text-secondary: #5a6270;
    
    /* Neon glow colors (adapted for light contrast) */
    --neon-pink: #d00062;
    --neon-blue: #0088cc;
    --neon-purple: #7a00cc;
    --neon-green: #29b80b;
    --neon-yellow: #dca300;
    
    --shadow-pink: 0 0 10px rgba(208, 0, 98, 0.2);
    --shadow-blue: 0 0 10px rgba(0, 136, 204, 0.2);
    
    --font-family: 'Outfit', sans-serif;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-family);
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

#app-container {
    position: relative;
    width: 100%;
    height: 100%;
    max-width: 600px;
    max-height: 900px;
    background: #ccd4ff; /* Periwinkle background */
    border: 5px solid #ff0000; /* Red outer border */
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
}

@media (min-width: 601px) {
    #app-container {
        border-radius: 24px;
        border: 1px solid rgba(255, 255, 255, 0.08);
    }
}

/* Background Ambient Glows */
.bg-glow {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
}

.bg-glow-1 {
    background: var(--neon-pink);
    top: -50px;
    left: -50px;
    animation: float-glow 10s ease-in-out infinite alternate;
}

.bg-glow-2 {
    background: var(--neon-blue);
    bottom: -50px;
    right: -50px;
    animation: float-glow 12s ease-in-out infinite alternate-reverse;
}

@keyframes float-glow {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 30px) scale(1.2); }
}

/* Glassmorphism Panel base */
.glass-panel {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

/* Screens System */
.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    transform: scale(0.95);
    z-index: 10;
    padding: 20px;
}

.screen.active {
    opacity: 1;
    pointer-events: auto;
    transform: scale(1);
}

/* MAIN MENU Screen */
#main-menu .menu-content {
    width: 90%;
    max-width: 380px;
    padding: 24px 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
}

.logo-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.logo-text {
    font-size: 2.4rem;
    font-weight: 800;
    letter-spacing: 2px;
    background: linear-gradient(135deg, #1e2229 30%, #4a5568 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.logo-text span {
    color: var(--neon-pink);
    -webkit-text-fill-color: var(--neon-pink);
    text-shadow: var(--shadow-pink);
}

.menu-image-container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.menu-game-cover {
    width: 220px;
    max-width: 85%;
    height: auto;
    aspect-ratio: 1 / 1;
    border-radius: 20px;
    border: 3px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18), 0 0 25px rgba(0, 136, 204, 0.25);
    object-fit: cover;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.menu-game-cover:hover {
    transform: scale(1.03);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.22), 0 0 35px rgba(208, 0, 98, 0.35);
}

.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    max-width: 240px;
}

.btn-play-large {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    padding: 15px 30px;
    border-radius: 14px;
    box-shadow: 0 6px 20px rgba(208, 0, 98, 0.4);
}

.btn-play-large:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 28px rgba(208, 0, 98, 0.65);
}

/* Premium Buttons Styling */
.btn {
    font-family: var(--font-family);
    font-weight: 600;
    font-size: 1.1rem;
    padding: 14px 28px;
    border-radius: 12px;
    cursor: pointer;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    color: white;
}

.btn-primary {
    background: linear-gradient(135deg, var(--neon-pink) 0%, #c0005a 100%);
}

.btn-primary.btn-glow:hover {
    box-shadow: 0 0 20px rgba(255, 0, 127, 0.6);
    transform: translateY(-2px);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--neon-blue) 0%, #00a0aa 100%);
}

.btn-secondary:hover {
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
    transform: translateY(-2px);
}

.btn-danger {
    background: linear-gradient(135deg, #ff416c 0%, #ff4b2b 100%);
}

.btn-danger:hover {
    box-shadow: 0 0 20px rgba(255, 75, 43, 0.4);
    transform: translateY(-2px);
}

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

.btn-icon-only {
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    font-size: 0.95rem;
    padding: 10px 18px;
    border-radius: 10px;
    font-weight: 500;
}

.btn-icon-only:hover {
    background: rgba(0, 0, 0, 0.09);
}

.high-score-board {
    border-top: 1px solid var(--border-glass);
    padding-top: 20px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.high-score-board h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.score-row {
    display: flex;
    justify-content: space-between;
    width: 100%;
    max-width: 220px;
    margin: 0 auto;
    font-size: 1.1rem;
}

.score-row span {
    color: var(--text-secondary);
}

.score-row strong {
    color: var(--neon-blue);
    text-shadow: var(--shadow-blue);
}

/* GAME PLAY SCREEN */
#game-screen {
    padding: 0;
    justify-content: flex-start;
    position: relative;
}

/* Top Game HUD Bar */
.game-hud-bar {
    position: absolute;
    top: 10px;
    left: 12px;
    right: 12px;
    height: 44px;
    padding: 0 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 50;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.hud-item {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.85rem;
}

.hud-label {
    font-size: 0.68rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

.hud-item strong {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--text-primary);
}

.hud-level strong {
    color: #e6007e;
}

.hud-score strong {
    color: var(--neon-blue);
}

.hud-bubbles strong {
    color: #29b80b;
}

.hud-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-hud-action {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    background: rgba(0, 0, 0, 0.04);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 0.9rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    outline: none;
}

.btn-hud-action:hover {
    background: rgba(0, 0, 0, 0.1);
    transform: scale(1.08);
}

.btn-hud-exit:hover {
    background: #ff3366;
    color: white;
    border-color: #ff3366;
}

#canvas-container {
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 5;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* Special Alert Popup notifications inside game */
#game-alert-container {
    position: absolute;
    top: 65px;
    left: 50%;
    transform: translateX(-50%);
    pointer-events: none;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.game-alert {
    background: rgba(10, 11, 22, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 18px;
    border-radius: 30px;
    color: white;
    font-weight: 700;
    font-size: 1rem;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
    animation: alert-pop 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes alert-pop {
    0% { opacity: 0; transform: scale(0.6) translateY(15px); }
    30% { opacity: 1; transform: scale(1.05) translateY(0); }
    70% { opacity: 1; transform: scale(1) translateY(0); }
    100% { opacity: 0; transform: scale(0.9) translateY(-20px); }
}

/* Bottom Right Power-ups Bar */
.powerups-bar {
    position: absolute;
    bottom: 12px;
    right: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 50;
}

.btn-powerup {
    position: relative;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.9);
    border: 1.5px solid rgba(0, 0, 0, 0.12);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
}

.powerup-icon {
    font-size: 1.35rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
    transition: transform 0.2s ease;
}

.powerup-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    background: linear-gradient(135deg, #ff007f, #cc005a);
    color: white;
    font-family: var(--font-family);
    font-size: 0.7rem;
    font-weight: 800;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(255, 0, 127, 0.5);
    border: 1.5px solid white;
}

.btn-powerup:hover {
    transform: translateY(-2px) scale(1.08);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.btn-powerup.armed {
    border-color: #ff0055;
    background: #fff0f5;
    box-shadow: 0 0 16px rgba(255, 0, 85, 0.6);
    animation: armed-pulse 1s infinite alternate;
}

.btn-powerup.armed .powerup-icon {
    transform: scale(1.2);
}

.btn-powerup.disabled {
    opacity: 1;
    filter: none;
    cursor: default;
    pointer-events: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

@keyframes armed-pulse {
    0% { box-shadow: 0 0 10px rgba(255, 0, 85, 0.4); transform: scale(1.02); }
    100% { box-shadow: 0 0 20px rgba(255, 0, 85, 0.8); transform: scale(1.1); }
}

/* Screen Overlays (Pause, Game Over, Win) */
.screen-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(240, 242, 245, 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 60;
    padding: 20px;
}

.screen-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.overlay-content {
    width: 92%;
    max-width: 340px;
    padding: 28px 24px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 16px;
    animation: zoom-in 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes zoom-in {
    0% { transform: scale(0.75); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.overlay-content h2 {
    font-size: 1.85rem;
    font-weight: 800;
    line-height: 1.2;
}

.win-trophy {
    font-size: 3.5rem;
    margin-bottom: -6px;
    animation: trophy-bounce 1s infinite alternate cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes trophy-bounce {
    0% { transform: translateY(0) scale(1); }
    100% { transform: translateY(-8px) scale(1.1); }
}

.game-over-icon {
    font-size: 3.5rem;
    margin-bottom: -6px;
}

.stars-container {
    display: flex;
    justify-content: center;
    gap: 8px;
    font-size: 1.8rem;
}

.stars-container .star {
    opacity: 0.3;
    transform: scale(0.8);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.stars-container .star.active {
    opacity: 1;
    transform: scale(1.15);
    filter: drop-shadow(0 0 8px rgba(255, 215, 0, 0.7));
}

#win-subtitle, #game-over-reason {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.overlay-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

.final-score-box {
    background: rgba(0, 0, 0, 0.04);
    border: 1px solid var(--border-glass);
    padding: 14px 18px;
    border-radius: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.score-stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.score-stat-row .label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.score-stat-row strong {
    font-size: 1.15rem;
    font-weight: 800;
    color: #e6007e;
}

.score-stat-row h2 {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--neon-blue);
    margin: 0;
}

#win-high-score-badge, #new-high-score-badge {
    background: #ffe000;
    color: #1a1a1a;
    font-weight: 800;
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
    box-shadow: 0 0 12px rgba(255, 224, 0, 0.6);
    animation: pulse 1s infinite alternate;
}

@keyframes pulse {
    0% { transform: scale(1); }
    100% { transform: scale(1.06); }
}

/* Helpers */
.hidden {
    display: none !important;
}

.glass-select {
    width: 100%;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    color: white;
    font-family: var(--font-family);
    font-size: 1.05rem;
    font-weight: 600;
    outline: none;
    cursor: pointer;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    text-align-last: center;
}

.glass-select:focus, .glass-select:hover {
    border-color: var(--neon-blue);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.25);
    background: rgba(255, 255, 255, 0.08);
}

.glass-select option {
    background-color: #13152c;
    color: white;
    font-weight: 600;
    padding: 10px;
}