* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
body {
    background: linear-gradient(135deg, #0d1a26, #1a3a5f);
    color: #e0f7fa;
    display: flex;
    flex-direction: column; /* Added to center content vertically with footer */
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    overflow-x: hidden;
}
#game-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 1200px;
    width: 100%;
    position: relative;
}
/* Game Menu Button */
.menu-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 40px;
    height: 40px;
    background: rgba(0, 162, 255, 0.3);
    border: 2px solid #00a2ff;
    border-radius: 5px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    z-index: 1000;
    transition: all 0.3s;
}
.menu-btn:hover {
    background: rgba(0, 162, 255, 0.5);
    transform: scale(1.1);
}
.menu-btn span {
    width: 20px;
    height: 2px;
    background: #00ffc8;
    transition: all 0.3s;
}
/* Menu Overlay */
.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(13, 26, 38, 0.95);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 999;
}
.menu-overlay.active {
    display: flex;
}
.menu-content {
    background: linear-gradient(135deg, #1a3a5f, #0d1a26);
    border: 3px solid #00a2ff;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 0 30px rgba(0, 162, 255, 0.5);
}
.menu-content h2 {
    margin-bottom: 20px;
    color: #00ffc8;
    font-size: 1.8rem;
}
.menu-option, .menu-content a {
    display: block;
    width: 100%;
    padding: 15px;
    margin: 10px 0;
    background: linear-gradient(135deg, #00ffc8, #00a2ff);
    border: none;
    border-radius: 8px;
    color: #0d1a26;
    font-weight: bold;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none; /* Remove underline from links */
    text-align: center; /* Center link text */
}
.menu-option:hover, .menu-content a:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 255, 200, 0.4);
}
/* Start Overlay */
.start-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(13, 26, 38, 0.95);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1001;
}
.start-overlay.active {
    display: flex;
}
.start-content {
    background: linear-gradient(135deg, #1a3a5f, #0d1a26);
    border: 3px solid #00a2ff;
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 0 30px rgba(0, 162, 255, 0.5);
}
.start-content h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    background: linear-gradient(90deg, #00ffc8, #00a2ff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.start-content .subtitle {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: #80deea;
}
.btn-primary.large {
    padding: 20px 40px;
    font-size: 1.3rem;
    margin: 10px 0;
}
header {
    text-align: center;
    margin-bottom: 10px;
    /* FIX: Header को डिफ़ॉल्ट रूप से छिपाएँ */
    display: none;
}
/* FIX: 768px तक के Responsive Design में Header को वापस दिखाएँ */
@media (max-width: 768px) {
    header {
        display: block;
    }
}
h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 5px;
    background: linear-gradient(90deg, #00ffc8, #00a2ff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 10px rgba(0, 255, 200, 0.3);
}
.subtitle {
    font-size: clamp(1rem, 3vw, 1.4rem);
    color: #80deea;
    margin-bottom: 15px;
}
.game-area {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    align-items: flex-start;
}
#game-board {
    display: grid;
    grid-template-columns: repeat(20, minmax(12px, 25px));
    grid-template-rows: repeat(20, minmax(12px, 25px));
    gap: 1px;
    background-color: #0a1520;
    border: 3px solid #00a2ff;
    border-radius: 5px;
    box-shadow: 0 0 15px rgba(0, 162, 255, 0.5);
    padding: 5px;
    position: relative;
    max-width: 100%;
    overflow: hidden;
}
.grid-cell {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 2px;
    aspect-ratio: 1/1;
}
.wall {
    background-color: #1a3a5f;
    box-shadow: inset 0 0 5px rgba(0, 162, 255, 0.7);
}
.packet {
    background-color: #00a2ff;
    width: 60%;
    height: 60%;
    border-radius: 50%;
    box-shadow: 0 0 8px #00a2ff;
    animation: pulse 1.5s infinite alternate;
}
@keyframes pulse {
    from { transform: scale(0.8); opacity: 0.7; }
    to { transform: scale(1.2); opacity: 1; }
}
.firewall-boost {
    background-color: #b300ff;
    width: 70%;
    height: 70%;
    border-radius: 50%;
    box-shadow: 0 0 10px #b300ff;
    animation: rotate 3s infinite linear;
}
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
.guardian {
    background-color: #00ffc8;
    width: 80%;
    height: 80%;
    border-radius: 50% 50% 50% 0;
    transform: rotate(45deg);
    box-shadow: 0 0 10px #00ffc8;
    position: relative;
    z-index: 10;
}
.guardian::after {
    content: '';
    position: absolute;
    width: 30%;
    height: 30%;
    background-color: #0d1a26;
    border-radius: 50%;
    top: 25%;
    left: 25%;
}
.malware-virus {
    background-color: #ff3366;
    width: 80%;
    height: 80%;
    border-radius: 50%;
    box-shadow: 0 0 10px #ff3366;
    position: relative;
    z-index: 5;
}
.malware-virus::before, .malware-virus::after {
    content: '';
    position: absolute;
    background-color: #ff3366;
    border-radius: 2px;
}
.malware-virus::before {
    width: 15%;
    height: 60%;
    top: 20%;
    left: 42.5%;
}
.malware-virus::after {
    width: 60%;
    height: 15%;
    top: 42.5%;
    left: 20%;
}
.quarantined {
    background-color: #00a2ff !important;
    box-shadow: 0 0 10px #00a2ff !important;
    animation: quarantine 0.5s infinite alternate;
}
@keyframes quarantine {
    from { transform: scale(1); }
    to { transform: scale(1.1); }
}
#game-info {
    background: rgba(13, 26, 38, 0.8);
    border: 2px solid #00a2ff;
    border-radius: 10px;
    padding: 20px;
    width: min(100%, 300px);
    display: flex;
    flex-direction: column;
    gap: 20px;
    box-shadow: 0 0 15px rgba(0, 162, 255, 0.3);
}
.stats {
    display: flex;
    justify-content: space-between;
    gap: 10px;
}
.stat {
    text-align: center;
    flex: 1;
}
.stat h3 {
    font-size: clamp(0.8rem, 2vw, 1rem);
    margin-bottom: 5px;
    color: #80deea;
}
.stat div {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: bold;
    background: rgba(0, 162, 255, 0.2);
    border-radius: 5px;
    padding: 5px;
}
.btn-primary, .btn-secondary {
    padding: 12px;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    font-size: clamp(0.9rem, 2vw, 1rem);
}
.btn-primary {
    background: linear-gradient(135deg, #00ffc8, #00a2ff);
    color: #0d1a26;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 255, 200, 0.4);
}
.btn-secondary, .start-overlay a.btn-secondary {
    background: rgba(0, 162, 255, 0.2);
    color: #e0f7fa;
    border: 1px solid #00a2ff;
    text-decoration: none; /* Link underline hatane ke liye */
    text-align: center; /* Text ko center karne ke liye */
    display: inline-block; /* Width and height sahi se apply karne ke liye */
    width: auto; /* Button jaisa dikhe */
    line-height: normal; /* Text vertically center karne mein madad karta hai */
}
.btn-secondary:hover, .start-overlay a.btn-secondary:hover {
    background: rgba(0, 162, 255, 0.4);
}
.instructions, .powerups {
    background: rgba(0, 162, 255, 0.1);
    padding: 15px;
    border-radius: 5px;
}
.instructions h3, .powerups h3 {
    margin-bottom: 10px;
    color: #80deea;
    font-size: clamp(1rem, 2.5vw, 1.2rem);
}
.instructions p {
    font-size: clamp(0.8rem, 2vw, 0.9rem);
    margin-bottom: 8px;
    line-height: 1.4;
}
#powerup-status {
    font-weight: bold;
    color: #b300ff;
    text-shadow: 0 0 5px rgba(179, 0, 255, 0.7);
    font-size: clamp(0.8rem, 2vw, 1rem);
}
.mobile-controls {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
    width: 100%;
}
.mobile-btn {
    width: clamp(50px, 15vw, 70px);
    height: clamp(50px, 15vw, 70px);
    border-radius: 50%;
    background: rgba(0, 162, 255, 0.3);
    border: 2px solid #00a2ff;
    color: #e0f7fa;
    font-size: clamp(1.2rem, 4vw, 1.8rem);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s;
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
}
.mobile-btn:active, .mobile-btn.active {
    background: rgba(0, 162, 255, 0.7);
    transform: scale(0.95);
    box-shadow: 0 0 15px rgba(0, 255, 200, 0.6);
}
.mobile-controls div {
    display: flex;
    gap: clamp(60px, 20vw, 100px);
}
.mobile-instructions {
    text-align: center;
    color: #80deea;
    font-size: 0.9rem;
    margin-top: 5px;
    display: none;
}
/* Points popup animation */
@keyframes floatUp {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(-30px);
    }
}
/* --- Footer Styling --- */
#game-footer {
    width: 100%;
    max-width: 1200px;
    margin-top: 30px;
    padding: 20px;
    background: rgba(13, 26, 38, 0.9);
    border-top: 2px solid #00a2ff;
    border-radius: 10px 10px 0 0;
    text-align: center;
    box-shadow: 0 -5px 20px rgba(0, 162, 255, 0.2);
    order: 4;
}
.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-bottom: 15px;
}
#game-footer a {
    color: #00ffc8;
    text-decoration: none;
    font-size: 1rem;
    padding: 5px 10px;
    border-radius: 5px;
    transition: all 0.3s;
    border: 1px solid transparent;
}
#game-footer a:hover {
    color: #e0f7fa;
    background: rgba(0, 162, 255, 0.2);
    border: 1px solid #00ffc8;
    transform: translateY(-2px);
}
.copyright {
    font-size: 0.85rem;
    color: #80deea;
    margin-top: 10px;
}
/* End of Footer Styling */
/* Responsive design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    #game-container {
        display: flex;
        flex-direction: column;
    }
    .game-area {
        flex-direction: column;
        align-items: center;
        gap: 0;
        order: 1;
    }
    #game-board {
        grid-template-columns: repeat(20, minmax(10px, 20px));
        grid-template-rows: repeat(20, minmax(10px, 20px));
        width: 100%;
        max-width: 420px;
        order: 1;
    }
    .mobile-controls {
        display: flex;
        order: 2;
        margin: 10px 0;
    }
    .mobile-instructions {
        display: block;
    }
    #game-info {
        width: 100%;
        max-width: 420px;
        order: 3;
        margin-top: 10px;
    }
    .stats {
        flex-wrap: wrap;
    }
    .stat {
        min-width: 80px;
    }
}
@media (max-width: 480px) {
    #game-container {
        gap: 15px;
    }
    h1 {
        font-size: 1.8rem;
    }
    .subtitle {
        font-size: 0.9rem;
    }
    .start-content a.btn-secondary {
        /* Ensure mobile width is handled correctly for the link */
        min-width: 100%;
        box-sizing: border-box;
    }
    #game-info {
        padding: 15px;
    }
    .stats {
        flex-direction: row;
        justify-content: space-around;
    }
    .mobile-controls div {
        gap: 70px;
    }
    .mobile-instructions {
        font-size: 0.8rem;
    }
    /* Footer adjustment for small screens */
    .footer-links {
        flex-direction: column;
        gap: 10px;
    }
    #game-footer a {
        font-size: 0.9rem;
        padding: 8px;
        width: 80%;
        margin: 0 auto;
    }
}
@media (max-width: 320px) {
    #game-board {
        grid-template-columns: repeat(20, 10px);
        grid-template-rows: repeat(20, 10px);
    }
    .mobile-controls div {
        gap: 50px;
    }
    .mobile-btn {
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
    }
    .mobile-instructions {
        font-size: 0.75rem;
    }
}
/* Landscape orientation for mobile */
@media (max-height: 600px) and (orientation: landscape) {
    body {
        padding: 10px;
        min-height: auto;
    }
    #game-container {
        gap: 10px;
    }
    .game-area {
        flex-direction: row;
    }
    #game-board {
        grid-template-columns: repeat(20, minmax(8px, 15px));
        grid-template-rows: repeat(20, minmax(8px, 15px));
        max-width: 300px;
    }
    .mobile-controls {
        display: none;
    }
    .mobile-instructions {
        display: none;
    }
}
/* Large screens */
@media (min-width: 1400px) {
    #game-container {
        max-width: 1400px;
    }
    #game-board {
        grid-template-columns: repeat(20, 30px);
        grid-template-rows: repeat(20, 30px);
    }
}
/* High DPI screens */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .grid-cell {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}
/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    .packet, .firewall-boost, .quarantined {
        animation: none;
    }
}