body {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    min-height: 100vh;
    min-height: 100dvh;
    margin: 0;
    padding: 0;
    transition: background-color 0.3s, color 0.3s;
    overflow-x: hidden;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 400px;
    padding: 0.5rem 1rem;
    box-sizing: border-box;
    direction: ltr;
    flex-shrink: 0;
}

.topbar-title {
    font-family: "IBM Plex Sans Arabic", sans-serif;
    font-size: clamp(1.4rem, 5vw, 2rem);
    font-weight: 700;
    margin: 0;
    text-align: center;
    flex: 1;
}

.topbar-btn {
    font-size: 1.8rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    flex-shrink: 0;
}

.topbar-btn:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

body.dark .topbar-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.game {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    font-family: "IBM Plex Sans Arabic", sans-serif;
    font-optical-sizing: auto;
    font-style: normal;
    font-weight: 700;
    flex: 1 0 auto;
    width: 100%;
    max-width: 400px;
    padding: 0 1rem;
    box-sizing: border-box;
}

.example {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.grid-container {
    position: relative;
    width: 100%;
    max-width: fit-content;
    margin: 0 auto;
}

.grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: clamp(4px, 1.5vw, 7px);
    user-select: none;
    position: relative;
    width: fit-content;
    margin: 0 auto;
}

.warning-overlay {
    display: flex;
    position: absolute;
    left: 0;
    top: 0;
    justify-content: center;
    align-items: center;
    background-color: rgb(50%, 50%, 50%, 0.5);
    width: 100%;
    height: 100%;
    visibility: hidden;
}

.warning {
    text-align: center;
    background-color: rgb(100% 30% 30%);
    width: fit-content;
    height: fit-content;
    padding: 1em;
    border-radius: 8px;
}

.cell {
    border: none;
    width: clamp(2.5rem, 15vw, 3.5rem);
    height: clamp(2.5rem, 15vw, 3.5rem);
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f5f5f5;
    background-image: none;
    cursor: default;
    border-radius: 12%;
    border-bottom: clamp(3px, 1vw, 5px) solid rgba(0,0,0,.1);
    font-family: inherit;
    font-weight: inherit;
    font-optical-sizing: auto;
    font-style: inherit;
    font-size: clamp(1.2rem, 7vw, 2.5rem);
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
    -webkit-appearance: none;
    appearance: none;
    margin: 0;
    padding: 0;
}

body.dark .cell {
    background-color: #3a3a3c;
    background-image: none;
    border-bottom: clamp(3px, 1vw, 5px) solid rgba(255,255,255,.1);
    color: #ffffff;
}

body.dark .cell:hover,
body.dark .cell:active,
body.dark .cell:focus {
    background-color: #3a3a3c;
}

.cell.selected {
    outline: 3px solid black;
}

body.dark .cell.selected {
    outline: 3px solid white;
}

.cell[data-active=true] {
    cursor: pointer;
    touch-action: none;
}

.cell[data-state=solved] {
    background-color: #5ab4ac !important;
    color: white;
}

.cell[data-state=hint] {
    background-color: #d8b365 !important;
    color: white;
}

.cell.moving {
    opacity: 0.2;
    outline: none;
}

.drag-ghost {
    position: fixed;
    pointer-events: none;
    z-index: 1000;
    width: clamp(2.5rem, 15vw, 3.5rem);
    height: clamp(2.5rem, 15vw, 3.5rem);
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f5f5f5;
    border-radius: 12%;
    border-bottom: clamp(3px, 1vw, 5px) solid rgba(0,0,0,.1);
    font-family: "IBM Plex Sans Arabic", sans-serif;
    font-weight: 700;
    font-optical-sizing: auto;
    font-style: normal;
    font-size: clamp(1.2rem, 7vw, 2.5rem);
    box-sizing: border-box;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
}

body.dark .drag-ghost {
    background-color: #3a3a3c;
    border-bottom: clamp(3px, 1vw, 5px) solid rgba(255,255,255,.1);
    color: #ffffff;
}

.moves {
    font-size: clamp(0.9rem, 4vw, 1.8rem);
    letter-spacing: 0.1rem;
    color: #aaa;
    text-transform: uppercase;
    font-weight: 300;
    margin: 0.5rem 0;
}

body.dark .moves {
    color: #888;
}

body.dark {
    background-color: #1a1a1a;
    color: #ffffff;
}

body.dark .topbar-title {
    color: #ffffff;
}

.swapCounter {
    opacity: 1.0;
    font-weight: 700;
    color: black;
}

body.dark .swapCounter {
    color: white;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.25rem 0;
    margin: 0.5rem 0;
    padding: 0;
}

.controls button {
    font-family: inherit;
    font-size: clamp(0.7rem, 3.5vw, 1.3rem);
    font-style: normal;
    font-weight: 500;
    font-optical-sizing: auto;
    letter-spacing: 0.1rem;
    text-transform: uppercase;
    color: #aaa;
    cursor: pointer;
    padding: 0.5em 0.8em;
    background: none;
    border: none;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

body.dark .controls button {
    color: #888;
}

@media (max-width: 480px) {
    .topbar {
        padding: 0.5rem 0.75rem;
    }

    .game {
        padding: 0 0.5rem;
    }

    .grid {
        gap: 3px;
    }

    .cell {
        width: 16vw;
        height: 16vw;
        font-size: clamp(1rem, 6vw, 2rem);
        border-bottom-width: 3px;
    }

    .drag-ghost {
        width: 16vw;
        height: 16vw;
        font-size: clamp(1rem, 6vw, 2rem);
        border-bottom-width: 3px;
    }
}