body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background-color: #f5f5f5;
    margin: 0;
    min-height: 100vh;
}

h1 {
    margin: 0 0 20px 0;
    text-align: center;
    font-size: 1.5rem;
}

canvas {
    border: 2px solid #333;
    background-color: white;
    margin: 20px 0;
    max-width: 100%;
    height: auto;
}

.controls {
    display: flex;
    gap: 10px;
    margin: 10px 0;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 600px;
}

.input-group {
    display: flex;
    align-items: center;
    gap: 5px;
}

input[type="number"] {
    width: 60px;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px; /* Previene zoom en iOS */
}

button {
    padding: 12px 15px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    min-width: 120px;
    touch-action: manipulation; /* Mejora respuesta táctil */
}

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

button:active {
    transform: scale(0.98);
}

button.secondary {
    background-color: #6c757d;
}

button.secondary:hover {
    background-color: #545b62;
}

button.danger {
    background-color: #dc3545;
}

button.danger:hover {
    background-color: #c82333;
}

.function-display {
    font-size: 18px;
    font-weight: bold;
    margin: 10px 0;
    min-height: 25px;
    color: #333;
    text-align: center;
    word-break: break-word;
}

.toggle-section {
    display: flex;
    gap: 15px;
    align-items: center;
    margin: 15px 0;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
    max-width: 600px;
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

input[type="checkbox"] {
    transform: scale(1.3);
    cursor: pointer;
}

label {
    cursor: pointer;
    user-select: none;
    font-size: 14px;
    font-weight: bold;
    color: #333;
}

.coordinate-label {
    font-size: 16px;
    font-weight: bold;
    color: #333;
    white-space: nowrap;
}

/* Media Queries para diferentes tamaños de pantalla */

/* Tablets y pantallas medianas */
@media (max-width: 768px) {
    body {
        padding: 15px;
    }
    
    h1 {
        font-size: 1.3rem;
        margin-bottom: 15px;
    }
    
    canvas {
        margin: 15px 0;
    }
    
    .controls {
        gap: 8px;
        margin: 8px 0;
    }
    
    button {
        min-width: 100px;
        padding: 10px 12px;
    }
    
    .function-display {
        font-size: 16px;
    }
    
    .toggle-section {
        gap: 12px;
        margin: 12px 0;
    }
}

/* Móviles */
@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    
    h1 {
        font-size: 1.2rem;
        margin-bottom: 10px;
    }
    
    canvas {
        margin: 10px 0;
        width: 100%;
        max-width: 350px;
    }
    
    .controls {
        flex-direction: row;
        gap: 8px;
        margin: 10px 0;
        justify-content: center;
    }
    
    .input-group {
        flex-direction: row;
        gap: 5px;
    }
    
    .controls > button {
        width: 100%;
        max-width: 300px;
        margin: 5px 0;
    }
    
    input[type="number"] {
        width: 70px;
        padding: 8px;
        font-size: 16px;
    }
    
    button {
        padding: 12px 16px;
        font-size: 16px;
        min-width: auto;
    }
    
    .coordinate-label {
        font-size: 16px;
    }
    
    .function-display {
        font-size: 14px;
        padding: 0 10px;
    }
    
    .toggle-section {
        flex-direction: column;
        gap: 10px;
        margin: 10px 0;
        align-items: center;
    }
    
    .checkbox-container {
        justify-content: center;
        width: 100%;
    }
    
    label {
        font-size: 16px;
    }
}

/* Móviles muy pequeños */
@media (max-width: 320px) {
    body {
        padding: 5px;
    }
    
    h1 {
        font-size: 1.1rem;
    }
    
    canvas {
        max-width: 300px;
    }
    
    .controls > * {
        max-width: 280px;
    }
    
    .controls > button {
        max-width: 280px;
        padding: 10px 12px;
    }
    
    .input-group {
        gap: 3px;
    }
    
    .coordinate-label {
        font-size: 14px;
    }
}

/* Orientación landscape en móviles */
@media (max-width: 768px) and (orientation: landscape) {
    body {
        padding: 10px;
    }
    
    h1 {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }
    
    canvas {
        margin: 10px 0;
        max-height: 300px;
    }
    
    .controls {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .toggle-section {
        flex-direction: row;
        gap: 15px;
    }
}

/* Mejoras para accesibilidad táctil */
@media (hover: none) and (pointer: coarse) {
    button {
        min-height: 44px; /* Tamaño mínimo recomendado para touch */
    }
    
    input[type="checkbox"] {
        min-width: 22px;
        min-height: 22px;
    }
    
    label {
        padding: 10px;
    }
}

.gemini-result {
    background-color: #fff;
    border: 2px solid #007bff;
    border-radius: 8px;
    padding: 15px 20px;
    margin: 15px 0;
    max-width: 90%;
    width: 600px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    font-size: 16px;
    line-height: 1.5;
    color: #333;
    white-space: pre-wrap; /* respeta saltos de línea */
    overflow-x: auto;
}

.gemini-result p {
    margin: 0 0 10px 0;
}

.gemini-result ul {
    padding-left: 20px;
    margin: 5px 0 10px 0;
}

.gemini-result li {
    margin-bottom: 5px;
}

@media (max-width: 768px) {
    .gemini-result {
        font-size: 15px;
        padding: 12px 15px;
        width: 95%;
    }
}

@media (max-width: 480px) {
    .gemini-result {
        font-size: 14px;
        padding: 10px 12px;
        width: 100%;
    }
}

#gemini-loader {
    text-align: center;
    font-weight: bold;
    color: #007bff;
    margin: 10px 0;
    font-size: 16px;
    animation: blink 1s infinite;
}

.hidden {
    display: none;
}

@keyframes blink {
    0%, 50%, 100% { opacity: 1; }
    25%, 75% { opacity: 0.3; }
}