/* --------------------------------------- Animations ------------------------------------------- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.15);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes smallMove {
    0% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(5px);
    }
    50% {
        transform: translateX(0);
    }
    75% {
        transform: translateX(-5px);
    }
    100% {
        transform: translateX(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes slideIn {
    from {
        width: 0;
        opacity: 0;
    }
    to {
        width: 150%;
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        transform: translate(-50%, 100%);
        opacity: 0;
    }
    to {
        transform: translate(-50%, 0);
        opacity: 1;
    }
}

@keyframes slideInDown {
    from {
        transform: translate(-50%, -100%);
        opacity: 0;
    }
    to {
        transform: translate(-50%, 0);
        opacity: 1;
    }
}

/* ---------------------------------------- Main Components Styles ------------------------------------ */
body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f0f0f0;
    margin: 0;
    padding: 15px;
}

#manual-window {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#sudoku-grid, #manual-sudoku-grid {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    grid-template-rows: repeat(9, 1fr);
    gap: 4px;
    border: 4px solid #000;
    width: 90%;
    max-width: 500px;
    aspect-ratio: 1;
    box-shadow: 0 0 30px -10px #000;
    background-color: #fff;
    animation: fadeIn 1s;
    border-radius: 10px;
    overflow: hidden;
}

.cell {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px solid #ccc;
    font-size: 20px;
    background-color: #fff;
    transition: background-color 0.3s;
}

.cell.conflict {
    background-color: #ffabab;
}

.cell.initial {
    font-weight: bold;
    background-color: #e0e0e0;
}

.cell:nth-child(3n) {
    border-right: 4px solid #000;
}

.cell:nth-child(n + 19):nth-child(-n + 27),
.cell:nth-child(n + 46):nth-child(-n + 54) {
    border-bottom: 4px solid #000;
}

.cell:hover {
    background-color: #f0f0f0;
}

/* ------------------------------------------------ Buttons Styles --------------------------------------- */
#button-container {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

#auto-fill-button, #manual-fill-button {
    margin: 0 10px;
    padding: 15px 30px;
    font-size: 18px;
    cursor: pointer;
    border: none;
    border-radius: 10px;
    transition: background-color 0.3s, transform 0.3s;
    display: flex;
    align-items: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

#auto-fill-button {
    background-color: #4caf50;
    color: white;
}

#auto-fill-button:hover {
    background-color: #409144;
    transform: translateY(-2px);
}

#manual-fill-button {
    background-color: #ff9800;
    color: white;
}

#manual-fill-button:hover {
    background-color: #bd7400;
    transform: translateY(-2px);
}

#auto-fill-button i, #manual-fill-button i {
    margin-right: 10px;
}

/* ------------------------------------------- Other Components Styles ------------------------------------ */
#title-container {
    display: flex;
    align-items: center;
    margin-bottom: -10px;
    animation: fadeIn 1s;
}

#title {
    font-size: 36px;
    margin-right: 10px;
    color: #333;
    text-shadow: 2px 2px 4px #aaa;
}

#message {
    font-size: 24px;
    margin-bottom: 20px;
    color: #6e6e6e;
    text-shadow: 1px 1px 2px #aaa;
}

#timer {
    font-size: 24px;
    margin-bottom: 20px;
    display: none;
    color: #333;
    text-shadow: 1px 1px 2px #aaa;
}

#time-emoji {
    font-size: 30px;
}

#timer-display {
    color: #505050;
    font-weight: bold;
}

#hat {
    text-decoration: none;
    color: #333;
    font-size: 36px;
    position: relative;
    left: -5px;
    top: -3px;
    animation: pulse 1s infinite;
    transition: transform 0.3s;
}

/* ----------------------------------------- Numbers Dock --------------------------------------------------- */
#number-dock {
    display: none;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    padding: 5px 20px;
    border-radius: 20px;
    background-color: #f9f9f9;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid #ddd;
}

#number-dock:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

#number-dock .number-item {
    display: inline-block;
    margin: 0 10px;
    font-size: 24px;
    cursor: pointer;
    transition: color 0.3s, text-decoration 0.3s;
    position: relative;
}

#number-dock .number-item::after {
    content: '|';
    position: absolute;
    right: -15px;
    top: 50%;
    transform: translateY(-50%);
    color: #ccc;
    font-weight: bold;
    font-size: 100%;
    opacity: 0.7;
    animation: none;
}

#number-dock .number-item:last-child::after {
    content: '';
}

#number-dock .number-item.crossed {
    position: relative;
}

#number-dock .number-item.crossed::before {
    content: '';
    position: absolute;
    top: 45%;
    left: -20%;
    width: 150%;
    height: 2px;
    background: red;
    transform: rotate(-30deg);
    animation: slideIn 0.5s;
}

#number-dock .number-item.red {
    color: red;
    animation: bounce 0.5s;
}

#number-dock .number-item:not(.crossed):not(.red):hover {
    color: #4caf50;
}

.cell.highlight {
    background-color: #aaffaa;
    transition: background-color 0.3s;
}

/* -------------------------------------------- Notes ---------------------------------------------------- */
.notes-menu {
    background-color: #fff;
    border: 1px solid #ccc;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 10px;
    z-index: 1000;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 5px;
    border-radius: 10px;
    font-size: 14px;
    animation: fadeIn 0.3s ease-in-out;
}

.note-item {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 30px;
    height: 30px;
    text-align: center;
    line-height: 30px;
    cursor: pointer;
    border: 1px solid #ccc;
    margin: 2px;
    transition: background-color 0.3s, transform 0.3s;
    border-radius: 5px;
}

.note-item:hover {
    background-color: #f0f0f0;
    transform: scale(1.1);
}

.note-item.note-active {
    background-color: #aaffaa;
    color: #000;
    animation: pulse 0.5s ease-in-out;
}

.notes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 2px;
    font-size: 12px;
}

.note-cell {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #e0ffe0;
    border-radius: 3px;
    font-size: 10px;
    padding: 2px;
    transition: background-color 0.3s, transform 0.3s;
    animation: fadeIn 0.3s ease-in-out;
}

.note-cell:hover {
    background-color: #aaffaa;
    transform: scale(1.1);
}

/* --------------------------------------- Language Modal Styles ------------------------------------------- */
.lang-button {
    padding: 15px 30px;
    font-size: 18px;
    cursor: pointer;
    border: none;
    border-radius: 10px;
    background-color: #007bff;
    color: white;
    transition: background-color 0.3s, transform 0.3s;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.lang-button:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

.lang-button::before {
    font-size: 24px;
}

#lang-en::before {
    content: '📚';
}

#lang-es::before {
    content: '🏰';
}

#lang-fr::before {
    content: '🥐';
}

#lang-pt::before {
    content: '🍍';
}

#lang-de::before {
    content: '🍺';
}

#lang-it::before {
    content: '🍝';
}

#lang-la::before {
    content: '🏛️';
}

/* -------------------------------------------- Improved Image Styles ------------------------------------------ */
#difficulty-image {
    display: block;
    width: 150px;
    height: 150px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: filter 0.3s, box-shadow 0.3s;
}

/* --------------------------------------- Button Group Styles ------------------------------------------- */
#button-group {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    padding: 10px;
    border-radius: 50px;
    background-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    animation: slideInDown 0.5s ease-in-out;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

#button-group.visible {
    opacity: 1;
    visibility: visible;
}

#hint-indicator {
    position: fixed;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
    padding: 10px 20px;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background-color: transparent;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    cursor: pointer;
    font-size: 22px;
    transition: transform 0.3s, opacity 0.3s, visibility 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    visibility: visible;
}

#hint-indicator.hidden {
    opacity: 0;
    visibility: hidden;
}

#hint-indicator:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateX(-50%) scale(1.05);
}

#hint-indicator i {
    margin-right: 5px;
}

#surrender-button, #help-button, #language-button {
    width: 50px;
    height: 50px;
    font-size: 24px;
    cursor: pointer;
    border: none;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s, transform 0.3s;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 1s;
    color: #333;
}

#surrender-button:hover, #help-button:hover, #language-button:hover {
    background-color: rgba(255, 255, 255, 1);
    transform: scale(1.1);
}

#surrender-button {
    background-color: #ff4d4d;
    color: white;
}

#surrender-button:hover {
    background-color: #cc0000;
}

#help-button {
    background-color: #007bff;
    color: white;
}

#help-button:hover {
    background-color: #0056b3;
}

#language-button {
    background-color: #dcad15;
    color: white;
}

#language-button:hover {
    background-color: #c0940c;
}

/* --------------------------------------- Tab Button Styles ------------------------------------------- */
.tab-button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border: none;
    border-radius: 5px 5px 0 0;
    background-color: #f0f0f0;
    transition: background-color 0.3s, color 0.3s;
    margin-right: 5px;
}

.tab-button.active {
    background-color: #007bff;
    color: white;
}

.tab-button:hover {
    background-color: #ddd;
}

/* --------------------------------------- Tab Content Styles ------------------------------------------- */
.tab-content {
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 0 5px 5px 5px;
    background-color: #f9f9f9;
    animation: fadeIn 0.3s ease-in-out;
}

.tab-content h3 {
    font-size: 24px;
    color: #007bff;
    margin-bottom: 15px;
    text-shadow: 1px 1px 2px #aaa;
}

.tab-content ul {
    list-style-type: none;
    padding: 0;
}

.tab-content ul li {
    background: #fff;
    margin: 10px 0;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
}

.tab-content ul li:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.tab-content ul li::before {
    content: '🔹';
    position: absolute;
    left: -25px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
}

.tab-content ul li p {
    margin: 10px 0 0;
    font-size: 16px;
    color: #333;
}

/* ----------------------------------- Responsive Stuff (Media Queries) ----------------------------------- */
@media (max-width: 600px) {
    body {
        padding: 10px;
    }

    #sudoku-grid, #manual-sudoku-grid {
        width: 95%;
    }

    #title {
        font-size: 28px;
    }

    #hat {
        font-size: 28px;
    }

    #auto-fill-button, #manual-fill-button {
        padding: 10px 20px;
        font-size: 16px;
    }

    #timer {
        font-size: 20px;
    }

    #time-emoji {
        font-size: 25px;
    }

    #message {
        font-size: 20px;
    }

    #button-group {
        top: 10px;
        padding: 5px;
    }

    #surrender-button, #help-button, #language-button {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }

    .lang-button {
        padding: 10px 20px;
        font-size: 16px;
    }

    .lang-button::before {
        font-size: 20px;
    }

    #hint-indicator {
        font-size: 20px;
    }

    .tab-button {
        padding: 8px 16px;
        font-size: 14px;
    }

    .tab-content h3 {
        font-size: 20px;
    }

    .tab-content ul li {
        padding: 10px;
    }

    .tab-content ul li::before {
        left: -20px;
        font-size: 16px;
    }

    .tab-content ul li p {
        font-size: 14px;
    }
}
/* ---- Playnesta additions (rebrand subtitle; no upstream rules changed above) ---- */
#subtitle {
    font-size: 14px;
    letter-spacing: 0.35em;
    text-transform: uppercase;
    color: #666;
    margin: 0 0 10px 2px;
}