/*
 * Sudoku Kolor
 * Copyright (c) 2026. Todos los derechos reservados.
 *
 * Este código es propiedad intelectual confidencial y propietaria.
 * Prohibida su copia, distribución, ingeniería inversa o uso no autorizado.
 * This code is confidential and proprietary intellectual property.
 * Unauthorized copying, distribution, reverse engineering, or use is prohibited.
 */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap');

:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-cell: #0f3460;
    --bg-cell-hover: #1a5490;
    --text-primary: #FFD700;
    --text-secondary: #FFC107;
    --accent-color: #e94560;
    --accent-hover: #c73651;
    --border-color: #533483;
    --box-border-color: #FFC107;
    --highlight-color: #2a2a4a;
    --correct-color: #4caf50;
    --incorrect-color: #f44336;
    --calipso-color: #48CAE4;

    --num-1-color: #E74C3C;
    --num-2-color: #008B02;
    --num-3-color: #B10DC9;
    --num-4-color: #FFDC00;
    --num-5-color: #FF1493;
    --num-6-color: #00FFFF;
    --num-7-color: #D2B48C;
    --num-8-color: #32CD32;
    --num-9-color: #FF851B;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    overflow: hidden;
}

.game-container {
    background-color: var(--bg-secondary);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    max-width: 600px;
    width: 100%;
    animation: fadeIn 0.5s ease-in-out;
    position: relative;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

header {
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    font-size: 2.5em;
    font-weight: 700;
    color: var(--num-9-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.game-stats {
    display: flex;
    justify-content: space-around;
    margin-top: 10px;
    font-size: 1.1em;
    color: var(--text-secondary);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-value {
    font-size: 1.4em;
    font-weight: 600;
    color: var(--text-primary);
}

#sudoku-board {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    grid-gap: 1px;
    background-color: var(--border-color);
    border: 3px solid #FFD700;
    border-radius: 8px;
    overflow: hidden;
    margin: 20px auto;
    max-width: 450px;
    aspect-ratio: 1;
}

.cell {
    background-color: var(--bg-cell);
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5em;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
    color: var(--text-primary);
    position: relative;
    overflow: hidden;
}

.cell::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 10px;
    height: 10px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.6) 0%, rgba(255, 255, 255, 0) 70%);
    opacity: 0;
    transform: translate(-50%, -50%) scale(0);
    pointer-events: none;
}

.cell.wave-animation::before {
    animation: wave-effect 0.6s ease-out forwards;
}

.cell::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 10px;
    height: 10px;
    background: radial-gradient(circle, var(--calipso-color) 0%, rgba(72, 202, 228, 0) 70%);
    opacity: 0;
    transform: translate(-50%, -50%) scale(0);
    pointer-events: none;
}

.cell.wave-animation-calipso::after {
    animation: wave-effect 0.6s ease-out forwards;
}

@keyframes wave-effect {
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(15);
    }
}

.cell:hover:not(.fixed) {
    background-color: var(--bg-cell-hover);
}

.cell.fixed {
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    cursor: default;
    font-weight: 700;
}

.cell.num-1 {
    color: var(--num-1-color);
}

.cell.num-2 {
    color: var(--num-2-color);
}

.cell.num-3 {
    color: var(--num-3-color);
}

.cell.num-4 {
    color: var(--num-4-color);
}

.cell.num-5 {
    color: var(--num-5-color);
}

.cell.num-6 {
    color: var(--num-6-color);
}

.cell.num-7 {
    color: var(--num-7-color);
}

.cell.num-8 {
    color: var(--num-8-color);
}

.cell.num-9 {
    color: var(--num-9-color);
}

.cell.selected {
    background-color: var(--highlight-color) !important;
    transform: scale(1.05);
}

.cell.highlight {
    background-color: var(--highlight-color);
}

.cell.correct-animation {
    animation: correct 0.5s ease-in-out;
}

@keyframes correct {

    0%,
    100% {
        background-color: var(--bg-cell);
    }

    50% {
        background-color: var(--correct-color);
    }
}

.cell.error-animation {
    background-color: var(--incorrect-color) !important;
    animation: none;
    transform: scale(1);
}

.number-controls {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    gap: 5px;
    margin-bottom: 10px;
}

.action-controls {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.number-btn,
.action-btn {
    padding: 15px 5px;
    font-size: 1.2em;
    font-weight: 600;
    color: var(--text-primary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s, filter 0.3s;
}

.number-btn {
    background: linear-gradient(145deg, #7FDBFF, var(--calipso-color), #2980B9);
}

.number-btn:hover,
.action-btn:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}

.number-btn:active,
.action-btn:active {
    transform: translateY(0);
}

.number-btn.num-1 {
    color: var(--num-1-color);
}

.number-btn.num-2 {
    color: var(--num-2-color);
}

.number-btn.num-3 {
    color: var(--num-3-color);
}

.number-btn.num-4 {
    color: var(--num-4-color);
}

.number-btn.num-5 {
    color: var(--num-5-color);
}

.number-btn.num-6 {
    color: var(--num-6-color);
}

.number-btn.num-7 {
    color: var(--num-7-color);
}

.number-btn.num-8 {
    color: var(--num-8-color);
}

.number-btn.num-9 {
    color: var(--num-9-color);
}

.action-btn {
    background-color: var(--bg-cell);
}

.action-btn:hover {
    background-color: var(--bg-cell-hover);
}

#message-container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--bg-secondary);
    padding: 30px 50px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.7);
    text-align: center;
    z-index: 1000;
    display: none;
    animation: popIn 0.5s ease-out;
}

@keyframes popIn {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.8);
    }

    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

#message-container h2 {
    margin-bottom: 15px;
}

#message-container p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

#message-container button {
    padding: 10px 20px;
    font-size: 1em;
    background-color: var(--accent-color);
    color: var(--text-primary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

.level-complete-title {
    color: #FFDC00;
    font-size: 2.5em;
    font-weight: 700;
    animation: scaleUpText 1s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes scaleUpText {
    from {
        transform: scale(0);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

.game-complete-title {
    font-size: 3em;
    font-weight: 700;
    line-height: 1.2;
}

.game-complete-title span {
    display: inline-block;
    animation: bounce 1.5s infinite alternate;
}

.game-complete-title span:nth-child(odd) {
    animation-delay: 0.1s;
}

@keyframes bounce {
    from {
        transform: translateY(0);
    }

    to {
        transform: translateY(-10px);
    }
}

.flare {
    position: fixed;
    width: 4px;
    height: 150px;
    top: -150px;
    background: linear-gradient(to bottom, transparent, #fff, transparent);
    border-radius: 50%;
    filter: blur(2px);
    z-index: 999;
}

.flare.left {
    left: 10%;
    animation: flare-drop-left 2s ease-out forwards;
}

.flare.right {
    right: 10%;
    animation: flare-drop-right 2s ease-out forwards;
}

@keyframes flare-drop-left {
    0% {
        top: -150px;
        transform: rotate(20deg);
        opacity: 1;
    }

    70% {
        opacity: 1;
    }

    100% {
        top: 50%;
        transform: rotate(60deg);
        opacity: 0;
    }
}

@keyframes flare-drop-right {
    0% {
        top: -150px;
        transform: rotate(-20deg);
        opacity: 1;
    }

    70% {
        opacity: 1;
    }

    100% {
        top: 50%;
        transform: rotate(-60deg);
        opacity: 0;
    }
}

#message-container.game-over h2 {
    color: var(--incorrect-color);
    font-size: 3em;
    font-weight: 700;
    letter-spacing: 3px;
}

#game-over-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.75);
    z-index: 998;
    display: none;
}

.bonus-popup {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(76, 175, 80, 0.9);
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 1.2em;
    font-weight: 700;
    z-index: 500;
    pointer-events: none;
    animation: bonus-float-up 1.5s ease-out forwards;
}

@keyframes bonus-float-up {
    0% {
        opacity: 0;
        transform: translate(-50%, -30%);
    }

    20% {
        opacity: 1;
        transform: translate(-50%, -50%);
    }

    100% {
        opacity: 0;
        transform: translate(-50%, -80%);
    }
}

/* Historial de cambios */
#history-container {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100%;
    background-color: var(--bg-secondary);
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.5);
    transition: right 0.3s ease-in-out;
    z-index: 900;
    overflow-y: auto;
    padding: 20px;
}

#history-container.open {
    right: 0;
}

#history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}

#history-title {
    font-size: 1.5em;
    font-weight: 600;
    color: var(--text-primary);
}

#close-history {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5em;
    cursor: pointer;
    transition: transform 0.2s;
}

#close-history:hover {
    transform: rotate(90deg);
}

.history-item {
    background-color: var(--bg-cell);
    border-radius: 8px;
    padding: 10px;
    margin-bottom: 10px;
    border-left: 4px solid var(--calipso-color);
}

.history-time {
    font-size: 0.8em;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.history-message {
    font-size: 1em;
    color: var(--text-primary);
}

.history-item.error {
    border-left-color: var(--incorrect-color);
}

.history-item.success {
    border-left-color: var(--correct-color);
}

.history-item.hint {
    border-left-color: var(--text-secondary);
}

#history-toggle {
    position: fixed;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    background-color: var(--bg-cell);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 800;
    transition: all 0.3s;
}

#history-toggle:hover {
    background-color: var(--bg-cell-hover);
    transform: translateY(-50%) scale(1.1);
}

#history-icon {
    font-size: 1.5em;
}

.empty-history {
    text-align: center;
    color: var(--text-secondary);
    padding: 20px;
    font-style: italic;
}

@media (max-width: 600px) {
    body {
        padding: 5px;
        overflow-y: auto;
        /* Allow scrolling */
        height: auto;
        display: block;
        /* Remove flex centering */
    }

    .game-container {
        padding: 10px;
        margin-bottom: 20px;
        box-shadow: none;
    }

    h1 {
        font-size: 1.5em;
        margin-bottom: 10px;
    }

    header {
        margin-bottom: 10px;
    }

    #sudoku-board {
        max-width: 100%;
        margin: 5px auto;
        border-width: 2px;
    }

    .cell {
        font-size: 1.1em;
        height: 35px;
        /* Fixed smaller height */
    }

    .number-controls {
        gap: 2px;
        margin-bottom: 10px;
    }

    .number-btn,
    .action-btn {
        padding: 8px 2px;
        font-size: 0.9em;
    }

    .game-stats {
        flex-wrap: wrap;
        font-size: 0.8em;
        margin-top: 5px;
        justify-content: center;
        gap: 10px;
    }

    .stat-item {
        margin: 0;
    }

    .action-controls {
        gap: 5px;
    }

    #history-toggle {
        right: 10px;
        width: 40px;
        height: 40px;
        font-size: 0.8em;
        top: auto;
        bottom: 10px;
        /* Position at bottom */
        transform: none;
    }

    #history-container {
        width: 100%;
        right: -100%;
    }

    #message-container {
        width: 90%;
        padding: 15px;
    }

    #message-container h2 {
        font-size: 1.4em;
    }

}

/* --- LANDING PAGE STYLES --- */
#landing-page {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, #1a1a2e 0%, #000000 100%);
    z-index: 2000;
    /* Above everything */
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    text-align: center;
    overflow-y: auto;
    transition: opacity 0.5s ease-out, visibility 0.5s;
}

#landing-page.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.landing-content {
    position: relative;
    z-index: 2;
    padding: 20px;
    max-width: 800px;
    width: 90%;
}

.landing-title {
    font-size: 4em;
    font-weight: 800;
    color: #fff;
    margin-bottom: 10px;
    letter-spacing: 5px;
    animation: slideDown 1s ease-out;
}

.neon-text {
    color: var(--num-6-color);
    /* Cyan */
    text-shadow: 0 0 10px var(--num-6-color), 0 0 20px var(--num-6-color), 0 0 40px var(--num-6-color);
}

.landing-slogan {
    font-size: 1.5em;
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-weight: 300;
    animation: fadeIn 1.5s ease-out;
}

.benefits-container {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 50px;
    animation: fadeInUp 1s ease-out 0.5s backwards;
    flex-wrap: wrap;
    /* Allow wrapping for more cards */
}

.benefit-card {
    background: rgba(255, 255, 255, 0.05);
    /* Glassmorphism */
    backdrop-filter: blur(10px);
    padding: 8px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    width: 170px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 255, 255, 0.2);
    border-color: var(--num-6-color);
}

.benefit-icon {
    font-size: 3em;
    display: block;
    margin-bottom: 15px;
}

.benefit-card h3 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 1.2em;
}

.benefit-card p {
    color: #cccc;
    font-size: 0.9em;
}

.pulsing-btn {
    padding: 20px 60px;
    font-size: 1.8em;
    font-weight: 700;
    background-color: #FF6B00;
    /* Orange background */
    color: #FFD700;
    /* Yellow text */
    border: none;
    border-radius: 50px;
    cursor: pointer;
    animation: pulse 2s infinite;
    transition: transform 0.2s;
    margin-bottom: 20px;
    display: inline-block;
}

.pulsing-btn:hover {
    transform: scale(1.05);
    background-color: #FF8533;
    /* Lighter orange on hover */
}

.secondary-btn {
    background: transparent;
    border: 2px solid var(--text-secondary);
    color: var(--text-secondary);
    padding: 10px 20px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 1em;
    margin-top: 10px;
    display: block;
    margin-left: auto;
    margin-right: auto;
    transition: all 0.3s;
}

.secondary-btn:hover {
    background: var(--text-secondary);
    color: var(--bg-primary);
}

/* Modal Styles */
#instructions-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 3000;
    display: flex;
    justify-content: center;
    align-items: center;
}

#instructions-modal.hidden {
    display: none;
}

.modal-content.glass-panel {
    background: rgba(22, 33, 62, 0.9);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: 20px;
    max-width: 500px;
    text-align: left;
    color: white;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.8);
}

.modal-content h2 {
    color: var(--text-primary);
    margin-bottom: 20px;
    text-align: center;
}

.modal-content ul {
    margin-bottom: 30px;
    padding-left: 20px;
}

.modal-content li {
    margin-bottom: 10px;
    line-height: 1.5;
}

#close-instructions-btn {
    width: 100%;
    padding: 15px;
    background: var(--calipso-color);
    border: none;
    border-radius: 10px;
    color: #000;
    font-weight: 700;
    cursor: pointer;
}

/* Animations */
@keyframes pulse {
    0% {
        transform: scale(1);
    }

    70% {
        transform: scale(1.05);
    }

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Landing */
@media (max-width: 600px) {
    .landing-title {
        font-size: 2.5em;
        letter-spacing: 2px;
    }

    .landing-slogan {
        font-size: 1em;
        margin-bottom: 30px;
    }

    .benefits-container {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }

    .benefit-card {
        width: 100%;
        max-width: 300px;
        padding: 15px;
    }

    .benefit-icon {
        font-size: 2em;
        margin-bottom: 5px;
    }

    .pulsing-btn {
        font-size: 1.2em;
        padding: 15px 40px;
    }
}

/* --- NEON LETTERS --- */
.neon-letter {
    display: inline-block;
    color: #fff;
    text-shadow: 0 0 5px currentColor, 0 0 10px currentColor, 0 0 20px currentColor;
    animation: neon-pulse 2s infinite alternate;
    margin: 0 2px;
}

.n-red {
    color: #FF0055;
    text-shadow: 0 0 10px #FF0055, 0 0 20px #FF0055;
}

.n-orange {
    color: #FF9900;
    text-shadow: 0 0 10px #FF9900, 0 0 20px #FF9900;
}

.n-yellow {
    color: #FFDD00;
    text-shadow: 0 0 10px #FFDD00, 0 0 20px #FFDD00;
}

.n-green {
    color: #00FF55;
    text-shadow: 0 0 10px #00FF55, 0 0 20px #00FF55;
}

.n-cyan {
    color: #00DDFF;
    text-shadow: 0 0 10px #00DDFF, 0 0 20px #00DDFF;
}

.n-indigo {
    color: #5500FF;
    text-shadow: 0 0 10px #5500FF, 0 0 20px #5500FF;
}

.n-violet {
    color: #AA00FF;
}

.n-purple {
    color: #CC00FF;
    text-shadow: 0 0 10px #CC00FF, 0 0 20px #CC00FF;
}

.n-pink {
    color: #FF00CC;
    text-shadow: 0 0 10px #FF00CC, 0 0 20px #FF00CC;
}

.n-blue {
    color: #0055FF;
    text-shadow: 0 0 10px #0055FF, 0 0 20px #0055FF;
}

.n-teal {
    color: #00FFCC;
    text-shadow: 0 0 10px #00FFCC, 0 0 20px #00FFCC;
}

.n-lime {
    color: #CCFF00;
    text-shadow: 0 0 10px #CCFF00, 0 0 20px #CCFF00;
}

@keyframes neon-pulse {
    from {
        filter: brightness(100%);
    }

    to {
        filter: brightness(130%);
        text-shadow: 0 0 15px currentColor, 0 0 25px currentColor;
    }
}

/* --- SIDE BUTTONS --- */
#side-buttons {
    position: fixed;
    top: 50%;
    left: 0;
    width: 100%;
    height: 0;
    /* Just a container */
    z-index: 800;
    pointer-events: none;
    /* Allow clicking through container */
}

.side-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 70px;
    height: 70px;
    background-color: var(--bg-cell);
    border: none;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    pointer-events: auto;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);

    /* 3D Relief Effect */
    box-shadow:
        0 6px 0 var(--btn-shade),
        0 10px 10px rgba(0, 0, 0, 0.4),
        inset 0 2px 5px rgba(255, 255, 255, 0.2);
}

.side-btn:active {
    transform: translateY(-46%);
    /* Press down effect */
    box-shadow:
        0 2px 0 var(--btn-shade),
        0 4px 6px rgba(0, 0, 0, 0.4);
}

.side-btn .btn-icon {
    font-size: 2em;
    filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.5));
}

#instructions-toggle {
    left: 40px;
    --btn-color: #FF851B;
    /* Orange */
    --btn-shade: #C05800;
    /* Dark Orange */
    border: 3px solid var(--btn-color);
}

#history-toggle {
    right: 40px;
    --btn-color: #B10DC9;
    /* Purple */
    --btn-shade: #790099;
    /* Dark Purple */
    border: 3px solid var(--btn-color);
    background-color: var(--bg-cell);
    /* Override existing */
    /* Remove previous history positioning props */
    width: 70px !important;
    height: 70px !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    border-radius: 50% !important;
    /* Force override if ID selector has stronger specificity elsewhere */
}

/* Glowing Border Animation */
.side-btn::after {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 50%;
    box-shadow: 0 0 15px var(--btn-color);
    opacity: 0.6;
    z-index: -1;
    animation: btn-glow 2s infinite alternate;
}

@keyframes btn-glow {
    from {
        opacity: 0.4;
        transform: scale(0.95);
    }

    to {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

/* On Mobile, move them to bottom corners */
@media (max-width: 800px) {
    #side-buttons {
        top: auto;
        bottom: 20px;
        height: auto;
    }

    .side-btn {
        position: absolute;
        bottom: 0;
        top: auto;
        transform: none;
        width: 60px;
        height: 60px;
    }

    .side-btn:active {
        transform: translateY(2px);
    }

    #instructions-toggle {
        left: 20px;
    }

    #history-toggle {
        right: 20px;
    }
}

/* --- INSTRUCTIONS MODAL STYLES --- */
.instructions-text {
    text-align: left;
    margin-bottom: 20px;
    font-size: 0.95em;
    line-height: 1.6;
}

.instructions-text h3 {
    color: var(--calipso-color);
    /* Cyan-ish */
    margin-top: 15px;
    margin-bottom: 5px;
    font-size: 1.1em;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 3px;
}

.instructions-text ul {
    list-style: none;
    /* Custom bullets maybe? */
    padding-left: 10px;
}

.instructions-text li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 15px;
}

.instructions-text li::before {
    content: "•";
    color: var(--num-4-color);
    /* Yellow */
    position: absolute;
    left: 0;
}

.instructions-text .intro {
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: 15px;
    text-align: center;
}

.warning {
    color: var(--incorrect-color);
    /* Red */
    font-weight: bold;
}

.tip-box {
    background: rgba(255, 255, 255, 0.1);
    border-left: 4px solid var(--num-6-color);
    padding: 10px;
    margin-top: 15px;
    border-radius: 4px;
    font-size: 0.9em;
}

/* Ensure modal is wide enough for text */
.modal-content {
    max-width: 500px;
    width: 90%;
}

.hidden {
    display: none !important;
}

/* --- PARCHE FINAL BOTONES --- */
#side-buttons {
    pointer-events: none !important;
    z-index: 900 !important;
}

.side-btn-wrapper {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    position: absolute !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    pointer-events: auto !important;
    width: 120px !important;
    height: auto !important;
}

.side-btn-wrapper:first-child {
    left: 10px !important;
    right: auto !important;
}

.side-btn-wrapper:last-child {
    right: 10px !important;
    left: auto !important;
}

.side-btn {
    position: relative !important;
    top: auto !important;
    left: auto !important;
    right: auto !important;
    transform: none !important;
    margin-bottom: 5px !important;
}

.btn-label {
    display: block !important;
    position: static !important;
    color: #FFDD00 !important;
    font-size: 14px !important;
    font-weight: bold !important;
    text-align: center !important;
    z-index: 902 !important;
    text-shadow: 1px 1px 2px black !important;
    width: 100% !important;
    white-space: nowrap !important;
}

/* --- DONATION BUTTON --- */
.donation-container {
    margin-top: 25px;
    z-index: 1001;
    position: relative;
}

.donate-btn {
    display: inline-block;
    background: transparent;
    border: 2px solid var(--calipso-color);
    color: var(--calipso-color);
    padding: 10px 25px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 0.9em;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.donate-btn:hover {
    background: var(--calipso-color);
    color: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: 0 0 15px rgba(72, 202, 228, 0.4);
}

/* --- INSTRUCTIONS IMAGE UPDATE --- */
.modal-content.glass-panel {
    max-width: 900px !important;
    width: 95% !important;
}

.modal-body {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

.instructions-text {
    flex: 1;
}

.instructions-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.gameplay-preview {
    width: 100%;
    max-width: 350px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    border: 2px solid var(--calipso-color);
}

@media (max-width: 768px) {
    .modal-body {
        flex-direction: column;
    }

    .gameplay-preview {
        max-width: 100%;
        margin-top: 10px;
    }
}