body.ttt-simulated-fullscreen {
    overflow: hidden;
}

.ttt-game-container.ttt-simulated-fullscreen-active {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    /* Use viewport width */
    height: 100vh;
    /* Use viewport height for better mobile scrolling */
    z-index: 9999;
    max-width: 100%;
    border-radius: 0;
    overflow-y: auto;
    background-color: #f3f4f6;
    padding-left: 10px;
    padding-top: 10px;
    padding-right: 10px;
    box-sizing: border-box;
}

.ttt-game-container.ttt-simulated-fullscreen-active {
    min-height: auto;
}

.ttt-game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    box-sizing: border-box;
    margin: 2rem 0;
    background-color: #ffffff;
    /* Set a base background color */
}

.ttt-header {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 1rem;
}

.ttt-wrapper-title {
    text-align: center;
    font-size: 2.25rem;
    font-weight: 500;
    color: #1f2937;
    margin: 0;

}

/* Wrapper for the game interface */
.ttt-game-wrapper {
    background-color: white;
    padding: 1.2rem;
    border-radius: 1rem;
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    border: 1px solid #e5e7eb;
    /* border-gray-200 */
    width: 100%;
    max-width: 30rem;
    /* Will be wider on desktop */
    box-sizing: border-box;
}

/* Main layout for columns */
.ttt-main-layout {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Settings Toggle for Mobile */
.ttt-settings-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px;
    background-color: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    font-size: 18px;
    color: #374151;
    margin-bottom: 1rem;
    transition: border-radius 0.2s ease-in-out, margin-bottom 0.2s ease-in-out;
}

.ttt-settings-toggle.is-open {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    margin-bottom: 0;
    border-bottom: none;
}

.ttt-toggle-icon svg {
    transition: transform 0.2s ease-in-out;
    display: block;
    /* Prevents extra space below icon */
}

.ttt-settings-toggle.is-open .ttt-toggle-icon svg {
    transform: rotate(180deg);
}

.ttt-settings-collapsible {
    display: none;
}

.ttt-settings-collapsible.is-open {
    display: block;
    padding: 10px 10px 0 10px;
    border: 1px solid #e5e7eb;
    border-top: none;
    border-bottom-left-radius: 0.5rem;
    border-bottom-right-radius: 0.5rem;
    margin-bottom: 1rem;
}

/* Game Settings Dropdowns */
.ttt-settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 12px;
}

/* Score Board */
.ttt-score-board {
    display: flex;
    justify-content: space-around;
    gap: 1rem;
    margin: 16px auto 0;
    background-color: #f3f4f6;
    padding: 5px;
    border-radius: 0.75rem;
    width: 100%;
    max-width: 450px;
    box-sizing: border-box;
}

.ttt-score-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-weight: 500;
    font-size: 19px;
    color: #1230d5;
}

.ttt-score-item span:first-child {
    font-size: 16px;
    color: #4b5563;
}

.ttt-checkbox-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ttt-checkbox-container label {
    font-weight: 500;
    font-size: 16px;
    color: #374151;
    cursor: pointer;
    user-select: none;
}

.ttt-icon-btn {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ttt-icon-btn svg {
    width: 20px;
    height: 20px;
    color: #4b5563;
}

.ttt-error-message {
    color: #ef4444;
    /* red-500 */
    font-size: 0.875rem;
    margin: 0.25rem 0 0;
    font-weight: 500;
}

.ttt-checkbox-container input[type="checkbox"] {
    width: 15px;
    height: 15px;
    cursor: pointer;
}

.ttt-checkbox-container input[type="checkbox"]:focus {
    outline: none;
    box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.25);
}

.ttt-checkbox-container input[type="checkbox"]:active {
    outline: none;
    box-shadow: none;
}

.ttt-select-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.ttt-select-group label {
    font-weight: 500;
    color: #374151;
    font-size: 16px;
}

.ttt-select-group select,
.ttt-select-group input[type="text"] {
    width: 100%;
    padding: 5px 13px;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 16px;
    background-color: white;
    box-sizing: border-box;
}

.ttt-select-group select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='24' height='24' viewBox='0 0 20 20' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M6 8L10 12L14 8' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 6px center;
    background-size: 20px;
    padding-right: 2.5rem;
    cursor: pointer;
}

.ttt-select-group select:hover,
.ttt-select-group input[type="text"]:hover {
    border-color: #d1d5db;
}

.ttt-select-group select:focus,
.ttt-select-group select:active,
.ttt-select-group input[type="text"]:focus,
.ttt-select-group input[type="text"]:active {
    background-color: white;
    border-radius: 0.5rem;
    border-color: #3b82f6;
    box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.25);
    outline: none;
}

/* Utility class to hide elements */
.ttt-hidden {
    display: none !important;
}

/* Player name input section */
#playerInputs {
    margin-bottom: 1.5rem;
}

#playerInputs>div:not(:first-child) {
    margin-top: 10px;
}

/* Game status display */
#gameStatus {
    text-align: center;
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: 5px;
    color: #374151;
    /* text-gray-700 */
    min-height: 1.5em;
    /* Reserve space to prevent CLS on text change */
}

.ttt-game-board {
    display: grid;
    grid-template-columns: repeat(var(--ttt-board-size, 3), 1fr);
    grid-template-rows: repeat(var(--ttt-board-size, 3), 1fr);
    gap: 0.5rem;
    background-color: #d1d5db;
    /* bg-gray-300 */
    border-radius: 0.5rem;
    padding: 0.5rem;
    margin: 0 auto;
    aspect-ratio: 1 / 1;
    /* Reserve square space to prevent CLS */
}

.ttt-cell {
    aspect-ratio: 1 / 1;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 500;
    cursor: pointer;
    background-color: white;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    transition: background-color 0.2s ease-in-out, transform 0.1s ease-in-out;
}

.ttt-cell:hover:not(.ttt-taken) {
    background-color: #ffffff;
}

.ttt-cell.ttt-taken {
    cursor: not-allowed;
}

.ttt-icon {
    width: 70%;
    height: 70%;
    transition: transform 0.2s ease-in-out;
}

.ttt-x-mark .ttt-icon {
    stroke: #ef4444;
    /* red-500 */
}

.ttt-o-mark .ttt-icon {
    stroke: #3b82f6;
    /* blue-500 */
}

.ttt-cell.ttt-winner {
    background-color: hsl(60, 100%, 95%) !important;
    /* green-400 */
    transition: background-color 0.5s ease-in-out;
}

/* Animation for the winning icon */
@keyframes zoom-in-out-icon {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.15);
    }
}

.ttt-winner-icon {
    animation: zoom-in-out-icon 1.2s ease-in-out infinite;
}

/* Action Buttons in Settings Panel */
.ttt-action-buttons {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
    font-size: 16px;
    font-weight: 500;
    justify-content: center;
}

#restartButton {
    background-color: #1f2937;
    color: white;
    font-weight: 500;
    padding: 8px 13px;
    font-size: 16px;
    border-radius: 0.75rem;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s ease-in-out, transform 0.1s ease-in-out;
}

#clearButton {
    /* bg-gray-800 */
    color: white;
    font-weight: 500;
    font-size: 16px;
    padding: 8px 13px;
    border-radius: 0.75rem;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s ease-in-out, transform 0.1s ease-in-out;
    background-color: #6b7280;
}

.ttt-action-buttons .ttt-icon-btn {
    padding: 8px;
    border-radius: 0.75rem;
    border: 1px solid #d1d5db;
    background-color: #f9fafb;
    transition: background-color 0.2s ease-in-out, transform 0.1s ease-in-out;
}

.ttt-action-buttons .ttt-icon-btn:active {
    transform: scale(0.95);
}

#clearButton:hover {
    background-color: #6b7280;
}

#clearButton:focus {
    outline: none;
    box-shadow: none;
}

#restartButton:hover {
    background-color: #1f2937;
}

#restartButton:focus {
    outline: none;
    box-shadow: none;
}

#restartButton:active,
#clearButton:active {
    transform: scale(0.95);
}

#restartButton:disabled,
#popupRestartButton:disabled {
    background-color: #9ca3af;
    /* gray-400 */
    cursor: not-allowed;
}

#restartButton:disabled:hover {
    background-color: #9ca3af;
}

/* Popup Modal Styles */
.ttt-popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(3px);
    padding: 1rem;
    /* Add padding to prevent content from touching edges */
    box-sizing: border-box;
}

.ttt-popup-overlay p {
    text-align: center;
}

.ttt-popup-content {
    background-color: white;
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    max-width: 340px;
    box-sizing: border-box;
}

.ttt-popup-content h2 {
    margin: 0;
    font-size: 1.75rem;
    color: #1f2937;
}

.ttt-popup-content #countdownTimer {
    margin: 0;
    font-size: 1rem;
    color: #4b5563;
}

.ttt-popup-content button {
    background-color: #1f2937;
    color: white;
    font-weight: 500;
    font-size: 16px;
    padding: 6px 13px;
    border-radius: 0.75rem;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s ease-in-out, transform 0.1s ease-in-out;
}

.ttt-popup-content button:hover {
    background-color: #1f2937;
}

.ttt-popup-content button:focus {
    outline: none;
    box-shadow: none;
}

.ttt-popup-content button:active {
    transform: scale(0.95);
}

.ttt-popup-buttons {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 0.5rem;
}

#popupCloseButton {
    background-color: #6b7280;
    /* gray-500 */
}

#popupCloseButton:hover {
    background-color: #6b7280;
}

.faq-list {
    margin-top: 1rem;
}

.faq-list dt {
    font-weight: 500;
    font-size: 1.1em;
}

.faq-list dd {
    margin-left: 0;
    margin-top: 0.5rem;
    margin-bottom: 1rem;
    padding-left: 1rem;
    padding-bottom: 10px;
    border-bottom: 1px dashed #ddd;
}

@media (max-width: 767px) {
    .ttt-game-container {
        min-height: unset;
        justify-content: flex-start;
    }

    .ttt-game-wrapper {
        padding-left: 2px;
        padding-right: 2px;
        padding-top: 6px;
        border-left: none;
        border-right: none;
        border-radius: 0;
        box-shadow: none;
        max-width: 100%;
    }

    .ttt-game-container.ttt-simulated-fullscreen-active .ttt-game-wrapper {
        padding-left: 5px;
        padding-right: 5px;
    }

    .ttt-popup-content button {
        padding: 8px 13px;
    }

    .ttt-select-group select,
    .ttt-select-group input[type="text"] {
        padding: 8px 13px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .ttt-settings-grid {
        grid-template-columns: 1fr;
    }
}

/* Media Queries for responsiveness */
@media (min-width: 768px) {
    .ttt-game-wrapper {
        max-width: 55rem;
        /* Increased width for two columns */
    }

    #gameStatus {
        font-size: 1.25rem;
    }

    /* Two-column layout for desktop */
    .ttt-main-layout {
        display: grid;
        grid-template-columns: 280px 1fr;
        /* Fixed left, flexible right */
        gap: 2rem;
        align-items: start;
    }

    .ttt-board-panel {
        display: flex;
        flex-direction: column;
        align-items: center;
        /* Center the board and status */
    }

    .ttt-game-board {
        width: 100%;
        max-width: 420px;
        /* Give the board a max size */
    }

    .ttt-settings-toggle {
        display: none;
    }

    .ttt-settings-collapsible {
        display: block;
    }

    #gameModeGroup {
        grid-column: 1 / -1;
        /* Span across both columns */
    }
}