/* Variáveis de cor para tema claro e escuro */
:root {
    --bg-color: #f0f0f0;
    --text-color: #333;
    --container-bg: #fff;
    --button-shadow: rgba(0, 0, 0, 0.2);
    --focus-outline: #2563eb;
}

/* Tema escuro */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #1a1a1a;
        --text-color: #e0e0e0;
        --container-bg: #2d2d2d;
        --button-shadow: rgba(0, 0, 0, 0.5);
        --focus-outline: #60a5fa;
    }
}

body.dark-mode {
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --container-bg: #2d2d2d;
    --button-shadow: rgba(0, 0, 0, 0.5);
    --focus-outline: #60a5fa;
}

/* Estilos de alto contraste */
@media (prefers-contrast: more) {
    :root {
        --focus-outline: yellow;
    }
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 2rem;
    line-height: 1.6;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    max-width: 800px;
    width: 100%;
}

@media (min-width: 768px) {
    main {
        flex-direction: row;
        justify-content: center;
        align-items: flex-start;
    }
}

h1 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    width: 100%;
}

.game-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    width: 100%;
}

/* Layout do tabuleiro circular */
.game-board-container {
    width: clamp(250px, 80vw, 450px);
    height: clamp(250px, 80vw, 450px);
    border-radius: 50%;
    overflow: hidden;
    position: relative;
    box-shadow: 0 10px 20px var(--button-shadow);
}

.simon-button {
    width: 50%;
    height: 50%;
    border: 5px solid black;
    position: absolute;
    opacity: 0.8;
    cursor: pointer;
    transition: opacity 0.1s, transform 0.1s;
}

/* Cantos arredondados para as partes do círculo */
.simon-button.green {
    top: 0;
    left: 0;
    background-color: #2ECC71;
    border-top-left-radius: 100%;
    transform-origin: 100% 100%;
}
.simon-button.red {
    top: 0;
    right: 0;
    background-color: #E74C3C;
    border-top-right-radius: 100%;
    transform-origin: 0 100%;
}
.simon-button.yellow {
    bottom: 0;
    left: 0;
    background-color: #F1C40F;
    border-bottom-left-radius: 100%;
    transform-origin: 100% 0;
}
.simon-button.blue {
    bottom: 0;
    right: 0;
    background-color: #3498DB;
    border-bottom-right-radius: 100%;
    transform-origin: 0 0;
}

/* Estilos de textura */
.green.textured {
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='10' viewBox='0 0 10 10' xmlns='http://www.w3.org/2000/svg'%3E%3Cline x1='0' y1='10' x2='10' y2='0' stroke='%231f8b4d' stroke-width='1.5'/%3E%3C/svg%3E");
    background-repeat: repeat;
}
.red.textured {
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='10' viewBox='0 0 10 10' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='5' cy='5' r='2.5' fill='%23b73b30'/%3E%3C/svg%3E");
    background-repeat: repeat;
}
.yellow.textured {
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='10' viewBox='0 0 10 10' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h5v5H0zm5 5h5v5H5z' fill='%23c2a00c'/%3E%3C/svg%3E");
    background-repeat: repeat;
}
.blue.textured {
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='10' viewBox='0 0 10 10' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 5c3.333-3.333 6.667-3.333 10 0' stroke='%23297aa1' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
    background-repeat: repeat;
}

/* Estado ativo e foco */
.simon-button:hover, .simon-button:focus {
    opacity: 1;
    outline: 3px solid var(--focus-outline);
    outline-offset: 3px;
}
.simon-button.active {
    opacity: 1;
    box-shadow: 0 0 20px 5px rgba(255, 255, 255, 0.8);
}

/* Painel de status e controles */
.game-info-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background: var(--container-bg);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--button-shadow);
    width: 100%;
    max-width: 300px;
}

.score-display {
    font-size: 1.5rem;
    text-align: center;
}

.game-info-panel button {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border-radius: 8px;
    border: none;
    background-color: var(--focus-outline);
    color: white;
    cursor: pointer;
    transition: transform 0.1s, background-color 0.3s;
}

.game-info-panel button:hover {
    transform: translateY(-2px);
}

.game-info-panel button:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.game-options {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.game-options h3 {
    margin-top: 0;
    margin-bottom: 0.5rem;
}

.game-options label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.game-options input[type="radio"] {
    cursor: pointer;
}

/* Outros controles e rodapé */
.accessibility-controls {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}
.toggle-btn {
    background: var(--container-bg);
    border: 1px solid var(--focus-outline);
    border-radius: 8px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    color: var(--text-color);
    font-size: 0.9rem;
    transition: background 0.3s, transform 0.1s;
}
.toggle-btn.active {
    background-color: var(--focus-outline);
    color: white;
}

footer {
    text-align: center;
    margin-top: auto;
    padding-top: 1.5rem;
    font-size: 0.85rem;
    opacity: 0.7;
    width: 100%;
}
.shortcuts {
    background: var(--container-bg);
    border-radius: 8px;
    padding: 1rem;
    margin-top: 1rem;
    width: 100%;
    max-width: 600px;
}
.shortcuts dt { font-weight: bold; }
.shortcuts dd { margin: 0 0 0.5rem 1.5rem; }