@import url("https://fonts.googleapis.com/css2?family=Montserrat:wght@900&display=swap");

body {
    margin: 0;
    color: white;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    cursor: pointer;
    overflow: hidden;
    background: linear-gradient(-45deg, #0f0c29, #302b63, #24243e, #1a1a2e);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(221, 142, 195, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(139, 92, 246, 0.2) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.03) 2px,
            rgba(255, 255, 255, 0.03) 4px
        );
    pointer-events: none;
    z-index: -1;
    opacity: 0.5;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Modal Styles */
.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(3px);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 
                0 0 100px rgba(102, 126, 234, 0.3);
    max-width: 400px;
    width: 90%;
    animation: slideUp 0.4s ease;
    position: relative;
    overflow: hidden;
}

.modal-content::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    transform: rotate(45deg);
    animation: shimmer 3s infinite;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid rgba(255, 255, 255, 0.2);
}

.modal-content h2 {
    margin: 0 0 20px 0;
    font-size: 2em;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    animation: titleGlow 2s ease-in-out infinite alternate;
}

@keyframes titleGlow {
    from {
        text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    }
    to {
        text-shadow: 0 2px 20px rgba(255, 255, 255, 0.4), 0 0 30px rgba(255, 255, 255, 0.2);
    }
}

.modal-content input {
    width: 100%;
    padding: 15px;
    font-size: 1em;
    border: none;
    border-radius: 10px;
    margin: 10px 0;
    box-sizing: border-box;
}

.modal-content button,
#saveScoreBtn,
#viewLeaderboardBtn {
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 15px 30px;
    font-size: 1em;
    font-weight: bold;
    border-radius: 10px;
    cursor: pointer;
    margin: 10px 5px;
    transition: transform 0.2s, box-shadow 0.2s, background 0.3s;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.modal-content button:hover,
#saveScoreBtn:hover:not(:disabled),
#viewLeaderboardBtn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(139, 92, 246, 0.5);
    background: linear-gradient(135deg, #9d6ffb 0%, #7c7ff6 100%);
}

#saveScoreBtn:disabled {
    opacity: 0.8;
    cursor: default;
}

.close-btn {
    background: none !important;
    color: white !important;
    font-size: 2em !important;
    padding: 0 !important;
    margin: 0 !important;
    width: 40px;
    height: 40px;
    line-height: 1;
    transition: all 0.3s ease;
    border-radius: 50%;
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.2) !important;
    transform: rotate(90deg) scale(1.1);
}

.error-msg {
    color: #ffcccc;
    margin-top: 10px;
    min-height: 20px;
}

/* Game UI */
#gameUI {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 100;
}

#userInfo {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    padding: 10px 20px;
    border-radius: 10px;
    margin-bottom: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

#currentUser {
    font-weight: bold;
    margin-right: 15px;
}

#logoutBtn,
#leaderboardBtn {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.3), rgba(99, 102, 241, 0.3));
    color: white;
    border: 2px solid rgba(139, 92, 246, 0.5);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9em;
    transition: all 0.3s;
    box-shadow: 0 2px 10px rgba(139, 92, 246, 0.2);
}

#logoutBtn:hover,
#leaderboardBtn:hover {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.5), rgba(99, 102, 241, 0.5));
    border-color: rgba(139, 92, 246, 0.8);
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

#leaderboardBtn {
    display: block;
    width: 100%;
}

/* Leaderboard Modal */
.leaderboard-modal {
    min-width: 500px;
    max-width: 600px;
    animation: modalPulse 3s ease-in-out infinite;
}

@keyframes modalPulse {
    0%, 100% {
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 100px rgba(102, 126, 234, 0.3);
    }
    50% {
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 120px rgba(118, 75, 162, 0.4);
    }
}

.leaderboard-header-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 18px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.05));
    border-radius: 10px;
    font-weight: bold;
    font-size: 0.95em;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.leaderboard-header-row span:first-child {
    width: 60px;
    text-align: center;
}

.leaderboard-header-row span:nth-child(2) {
    flex: 1;
    text-align: left;
}

.leaderboard-header-row span:last-child {
    width: 100px;
    text-align: right;
}

/* Leaderboard List */
#leaderboardList {
    max-height: 450px;
    overflow-y: auto;
    padding-right: 5px;
}

#leaderboardList::-webkit-scrollbar {
    width: 8px;
}

#leaderboardList::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

#leaderboardList::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

#leaderboardList::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

.leaderboard-item {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.08));
    padding: 16px 18px;
    margin: 10px 0;
    border-radius: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.leaderboard-item::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: left 0.5s;
}

.leaderboard-item:hover::before {
    left: 100%;
}

.leaderboard-item:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.15));
    transform: translateX(8px) scale(1.02);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.3);
}

.leaderboard-item.current-user {
    background: linear-gradient(135deg, rgba(167, 139, 250, 0.5), rgba(139, 92, 246, 0.5), rgba(124, 58, 237, 0.4));
    border: 2px solid #a78bfa;
    box-shadow: 0 0 25px rgba(167, 139, 250, 0.6), 0 5px 20px rgba(0, 0, 0, 0.4);
    animation: currentUserGlow 2s ease-in-out infinite;
    transform: scale(1.03);
}

@keyframes currentUserGlow {
    0%, 100% {
        box-shadow: 0 0 25px rgba(167, 139, 250, 0.6), 0 5px 20px rgba(0, 0, 0, 0.4);
    }
    50% {
        box-shadow: 0 0 35px rgba(167, 139, 250, 0.8), 0 5px 25px rgba(0, 0, 0, 0.5);
    }
}

.leaderboard-item.current-user:hover {
    transform: translateX(8px) scale(1.05);
}

.leaderboard-rank {
    font-size: 1.6em;
    font-weight: bold;
    width: 60px;
    text-align: center;
    transition: transform 0.3s ease;
}

.leaderboard-item:hover .leaderboard-rank {
    transform: scale(1.2) rotate(-5deg);
}

.leaderboard-rank.gold {
    filter: drop-shadow(0 0 8px gold) drop-shadow(0 0 12px rgba(255, 215, 0, 0.6));
    animation: rankGlow 2s ease-in-out infinite;
}

.leaderboard-rank.silver {
    filter: drop-shadow(0 0 8px silver) drop-shadow(0 0 12px rgba(192, 192, 192, 0.6));
}

.leaderboard-rank.bronze {
    filter: drop-shadow(0 0 8px #cd7f32) drop-shadow(0 0 12px rgba(205, 127, 50, 0.6));
}

@keyframes rankGlow {
    0%, 100% {
        filter: drop-shadow(0 0 8px gold) drop-shadow(0 0 12px rgba(255, 215, 0, 0.6));
    }
    50% {
        filter: drop-shadow(0 0 12px gold) drop-shadow(0 0 20px rgba(255, 215, 0, 0.8));
    }
}

.leaderboard-name {
    flex: 1;
    text-align: left;
    font-size: 1.15em;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.leaderboard-score {
    font-weight: bold;
    font-size: 1.4em;
    width: 100px;
    text-align: right;
    color: #c4b5fd;
    text-shadow: 0 0 10px rgba(167, 139, 250, 0.6), 0 2px 5px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.leaderboard-item:hover .leaderboard-score {
    transform: scale(1.1);
    color: #ddd6fe;
    text-shadow: 0 0 15px rgba(167, 139, 250, 0.8), 0 2px 8px rgba(0, 0, 0, 0.4);
}

#instructions {
    display: none;
}

#results,
body:hover #instructions {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
    background: linear-gradient(135deg, rgba(15, 12, 41, 0.95), rgba(48, 43, 99, 0.95));
    backdrop-filter: blur(5px);
}

a:visited {
    color: inherit;
}

#results {
    display: none;
    cursor: default;
}

#results .content,
#instructions .content {
    max-width: 300px;
    padding: 50px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

#finalScore {
    font-size: 1.5em;
    font-weight: bold;
    color: #a78bfa;
    text-shadow: 0 0 15px rgba(139, 92, 246, 0.6);
    margin: 20px 0;
}

#score {
    position: absolute;
    color: white;
    font-size: 3em;
    font-weight: bold;
    top: 30px;
    right: 30px;
    text-shadow: 0 0 20px rgba(139, 92, 246, 0.8),
                 0 0 40px rgba(99, 102, 241, 0.6),
                 0 4px 8px rgba(0, 0, 0, 0.5);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Mobile Start Button */
.mobile-start-btn {
    display: none;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: 3px solid white;
    padding: 15px 40px;
    font-size: 1.2em;
    font-weight: bold;
    border-radius: 50px;
    cursor: pointer;
    margin-top: 20px;
    transition: all 0.3s;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3),
                0 0 30px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.mobile-start-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.mobile-start-btn:hover::before {
    width: 300px;
    height: 300px;
}

.mobile-start-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4),
                0 0 50px rgba(102, 126, 234, 0.5);
}

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

.mobile-restart-btn {
    display: none;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: 3px solid white;
    padding: 15px 40px;
    font-size: 1.2em;
    font-weight: bold;
    border-radius: 50px;
    cursor: pointer;
    margin-top: 20px;
    transition: all 0.3s;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3),
                0 0 30px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.mobile-restart-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.mobile-restart-btn:hover::before {
    width: 300px;
    height: 300px;
}

.mobile-restart-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4),
                0 0 50px rgba(102, 126, 234, 0.5);
}

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

/* Mobile Responsive Styles */
@media (max-width: 768px) {
    .modal-content {
        padding: 30px 20px;
        max-width: 90%;
        width: 95%;
        margin: 10px;
    }

    .modal-content h2 {
        font-size: 1.5em;
        margin-bottom: 15px;
    }

    .modal-content input {
        padding: 12px;
        font-size: 0.95em;
    }

    .modal-content button,
    #saveScoreBtn,
    #viewLeaderboardBtn {
        padding: 12px 20px;
        font-size: 0.9em;
        margin: 8px 3px;
    }

    /* Leaderboard Modal - Mobile */
    .leaderboard-modal {
        min-width: unset;
        max-width: 95%;
        width: 95%;
        padding: 25px 15px;
    }

    .leaderboard-header-row {
        padding: 8px 10px;
        font-size: 0.75em;
    }

    .leaderboard-header-row span:first-child {
        width: 45px;
    }

    .leaderboard-header-row span:last-child {
        width: 70px;
    }

    #leaderboardList {
        max-height: 350px;
    }

    .leaderboard-item {
        padding: 12px 10px;
        margin: 6px 0;
    }

    .leaderboard-rank {
        font-size: 1.2em;
        width: 45px;
    }

    .leaderboard-name {
        font-size: 0.95em;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .leaderboard-score {
        font-size: 1.1em;
        width: 70px;
    }

    /* Game UI - Mobile */
    #gameUI {
        top: 10px;
        left: 10px;
        right: 10px;
    }

    #userInfo {
        padding: 8px 12px;
        font-size: 0.9em;
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    #currentUser {
        font-size: 0.85em;
        margin-right: 10px;
    }

    #logoutBtn,
    #leaderboardBtn {
        padding: 6px 12px;
        font-size: 0.8em;
    }

    #score {
        font-size: 2em;
        top: 15px;
        right: 15px;
    }

    #results .content,
    #instructions .content {
        max-width: 90%;
        padding: 30px 20px;
        font-size: 0.9em;
    }

    /* Show mobile start button on mobile devices */
    .mobile-start-btn {
        display: inline-block;
    }

    .mobile-restart-btn {
        display: inline-block;
    }

    #finalScore {
        font-size: 1.2em;
    }

    .close-btn {
        font-size: 1.5em !important;
        width: 30px;
        height: 30px;
    }
}

@media (max-width: 480px) {
    .modal-content h2 {
        font-size: 1.3em;
    }

    .leaderboard-modal {
        padding: 20px 12px;
    }

    .leaderboard-header-row {
        font-size: 0.7em;
        padding: 6px 8px;
    }

    .leaderboard-item {
        padding: 10px 8px;
    }

    .leaderboard-rank {
        font-size: 1.1em;
        width: 40px;
    }

    .leaderboard-name {
        font-size: 0.85em;
    }

    .leaderboard-score {
        font-size: 1em;
        width: 60px;
    }

    #score {
        font-size: 1.8em;
        top: 12px;
        right: 12px;
    }

    #userInfo {
        font-size: 0.85em;
        padding: 6px 10px;
    }

    #logoutBtn,
    #leaderboardBtn {
        font-size: 0.75em;
        padding: 5px 10px;
    }

    .modal-content button,
    #saveScoreBtn,
    #viewLeaderboardBtn {
        padding: 10px 15px;
        font-size: 0.85em;
    }
}

/* Landscape Mobile */
@media (max-width: 768px) and (orientation: landscape) {
    .leaderboard-modal {
        max-height: 85vh;
        overflow-y: auto;
    }

    #leaderboardList {
        max-height: 250px;
    }

    .modal-content {
        max-height: 85vh;
        overflow-y: auto;
    }
}